]> git.openstreetmap.org Git - rails.git/blobdiff - vendor/assets/iD/iD.js
Update to iD v2.20.4
[rails.git] / vendor / assets / iD / iD.js
index 346fdbd662224b31a785db7b82beb06f0e2f6b4d..088e252a260e8bc791ff56df4edb2d3930f0ca78 100644 (file)
@@ -2,17 +2,12 @@
 
        var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
 
-       function createCommonjsModule(fn) {
-         var module = { exports: {} };
-               return fn(module, module.exports), module.exports;
-       }
-
        var check = function (it) {
          return it && it.Math == Math && it;
        };
 
        // https://github.com/zloirock/core-js/issues/86#issuecomment-115759028
-       var global$2 =
+       var global$1o =
          // eslint-disable-next-line es/no-global-this -- safe
          check(typeof globalThis == 'object' && globalThis) ||
          check(typeof window == 'object' && window) ||
@@ -22,7 +17,9 @@
          // eslint-disable-next-line no-new-func -- fallback
          (function () { return this; })() || Function('return this')();
 
-       var fails = function (exec) {
+       var objectGetOwnPropertyDescriptor = {};
+
+       var fails$V = function (exec) {
          try {
            return !!exec();
          } catch (error) {
          }
        };
 
+       var fails$U = fails$V;
+
        // Detect IE8's incomplete defineProperty implementation
-       var descriptors = !fails(function () {
+       var descriptors = !fails$U(function () {
          // eslint-disable-next-line es/no-object-defineproperty -- required for testing
          return Object.defineProperty({}, 1, { get: function () { return 7; } })[1] != 7;
        });
 
-       var $propertyIsEnumerable$1 = {}.propertyIsEnumerable;
+       var fails$T = fails$V;
+
+       var functionBindNative = !fails$T(function () {
+         var test = (function () { /* empty */ }).bind();
+         // eslint-disable-next-line no-prototype-builtins -- safe
+         return typeof test != 'function' || test.hasOwnProperty('prototype');
+       });
+
+       var NATIVE_BIND$4 = functionBindNative;
+
+       var call$q = Function.prototype.call;
+
+       var functionCall = NATIVE_BIND$4 ? call$q.bind(call$q) : function () {
+         return call$q.apply(call$q, arguments);
+       };
+
+       var objectPropertyIsEnumerable = {};
+
+       var $propertyIsEnumerable$2 = {}.propertyIsEnumerable;
        // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
        var getOwnPropertyDescriptor$5 = Object.getOwnPropertyDescriptor;
 
        // Nashorn ~ JDK8 bug
-       var NASHORN_BUG = getOwnPropertyDescriptor$5 && !$propertyIsEnumerable$1.call({ 1: 2 }, 1);
+       var NASHORN_BUG = getOwnPropertyDescriptor$5 && !$propertyIsEnumerable$2.call({ 1: 2 }, 1);
 
        // `Object.prototype.propertyIsEnumerable` method implementation
        // https://tc39.es/ecma262/#sec-object.prototype.propertyisenumerable
-       var f$7 = NASHORN_BUG ? function propertyIsEnumerable(V) {
+       objectPropertyIsEnumerable.f = NASHORN_BUG ? function propertyIsEnumerable(V) {
          var descriptor = getOwnPropertyDescriptor$5(this, V);
          return !!descriptor && descriptor.enumerable;
-       } : $propertyIsEnumerable$1;
+       } : $propertyIsEnumerable$2;
 
-       var objectPropertyIsEnumerable = {
-               f: f$7
-       };
-
-       var createPropertyDescriptor = function (bitmap, value) {
+       var createPropertyDescriptor$7 = function (bitmap, value) {
          return {
            enumerable: !(bitmap & 1),
            configurable: !(bitmap & 2),
          };
        };
 
-       var toString$1 = {}.toString;
+       var NATIVE_BIND$3 = functionBindNative;
+
+       var FunctionPrototype$3 = Function.prototype;
+       var bind$g = FunctionPrototype$3.bind;
+       var call$p = FunctionPrototype$3.call;
+       var uncurryThis$Y = NATIVE_BIND$3 && bind$g.bind(call$p, call$p);
+
+       var functionUncurryThis = NATIVE_BIND$3 ? function (fn) {
+         return fn && uncurryThis$Y(fn);
+       } : function (fn) {
+         return fn && function () {
+           return call$p.apply(fn, arguments);
+         };
+       };
+
+       var uncurryThis$X = functionUncurryThis;
 
-       var classofRaw = function (it) {
-         return toString$1.call(it).slice(8, -1);
+       var toString$n = uncurryThis$X({}.toString);
+       var stringSlice$c = uncurryThis$X(''.slice);
+
+       var classofRaw$1 = function (it) {
+         return stringSlice$c(toString$n(it), 8, -1);
        };
 
-       var split$1 = ''.split;
+       var global$1n = global$1o;
+       var uncurryThis$W = functionUncurryThis;
+       var fails$S = fails$V;
+       var classof$e = classofRaw$1;
+
+       var Object$5 = global$1n.Object;
+       var split$4 = uncurryThis$W(''.split);
 
        // fallback for non-array-like ES3 and non-enumerable old V8 strings
-       var indexedObject = fails(function () {
+       var indexedObject = fails$S(function () {
          // throws an error in rhino, see https://github.com/mozilla/rhino/issues/346
          // eslint-disable-next-line no-prototype-builtins -- safe
-         return !Object('z').propertyIsEnumerable(0);
+         return !Object$5('z').propertyIsEnumerable(0);
        }) ? function (it) {
-         return classofRaw(it) == 'String' ? split$1.call(it, '') : Object(it);
-       } : Object;
+         return classof$e(it) == 'String' ? split$4(it, '') : Object$5(it);
+       } : Object$5;
+
+       var global$1m = global$1o;
+
+       var TypeError$p = global$1m.TypeError;
 
        // `RequireObjectCoercible` abstract operation
        // https://tc39.es/ecma262/#sec-requireobjectcoercible
-       var requireObjectCoercible = function (it) {
-         if (it == undefined) throw TypeError("Can't call method on " + it);
+       var requireObjectCoercible$e = function (it) {
+         if (it == undefined) throw TypeError$p("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$d = function (it) {
+         return IndexedObject$4(requireObjectCoercible$d(it));
+       };
 
+       // `IsCallable` abstract operation
+       // https://tc39.es/ecma262/#sec-iscallable
+       var isCallable$r = function (argument) {
+         return typeof argument == 'function';
+       };
 
-       var toIndexedObject = function (it) {
-         return indexedObject(requireObjectCoercible(it));
+       var isCallable$q = isCallable$r;
+
+       var isObject$s = function (it) {
+         return typeof it == 'object' ? it !== null : isCallable$q(it);
        };
 
-       var isObject$4 = function (it) {
-         return typeof it === 'object' ? it !== null : typeof it === 'function';
+       var global$1l = global$1o;
+       var isCallable$p = isCallable$r;
+
+       var aFunction = function (argument) {
+         return isCallable$p(argument) ? argument : undefined;
        };
 
-       // `ToPrimitive` abstract operation
-       // 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
-       var toPrimitive = function (input, PREFERRED_STRING) {
-         if (!isObject$4(input)) return input;
+       var getBuiltIn$b = function (namespace, method) {
+         return arguments.length < 2 ? aFunction(global$1l[namespace]) : global$1l[namespace] && global$1l[namespace][method];
+       };
+
+       var uncurryThis$V = functionUncurryThis;
+
+       var objectIsPrototypeOf = uncurryThis$V({}.isPrototypeOf);
+
+       var getBuiltIn$a = getBuiltIn$b;
+
+       var engineUserAgent = getBuiltIn$a('navigator', 'userAgent') || '';
+
+       var global$1k = global$1o;
+       var userAgent$7 = engineUserAgent;
+
+       var process$4 = global$1k.process;
+       var Deno = global$1k.Deno;
+       var versions = process$4 && process$4.versions || Deno && Deno.version;
+       var v8 = versions && versions.v8;
+       var match, version$1;
+
+       if (v8) {
+         match = v8.split('.');
+         // in old Chrome, versions of V8 isn't V8 = Chrome / 10
+         // but their correct versions are not interesting for us
+         version$1 = match[0] > 0 && match[0] < 4 ? 1 : +(match[0] + match[1]);
+       }
+
+       // BrowserFS NodeJS `process` polyfill incorrectly set `.v8` to `0.0`
+       // so check `userAgent` even if `.v8` exists, but 0
+       if (!version$1 && userAgent$7) {
+         match = userAgent$7.match(/Edge\/(\d+)/);
+         if (!match || match[1] >= 74) {
+           match = userAgent$7.match(/Chrome\/(\d+)/);
+           if (match) version$1 = +match[1];
+         }
+       }
+
+       var engineV8Version = version$1;
+
+       /* eslint-disable es/no-symbol -- required for testing */
+
+       var V8_VERSION$3 = engineV8Version;
+       var fails$R = fails$V;
+
+       // eslint-disable-next-line es/no-object-getownpropertysymbols -- required for testing
+       var nativeSymbol = !!Object.getOwnPropertySymbols && !fails$R(function () {
+         var symbol = Symbol();
+         // Chrome 38 Symbol has incorrect toString conversion
+         // `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;
+       });
+
+       /* eslint-disable es/no-symbol -- required for testing */
+
+       var NATIVE_SYMBOL$3 = nativeSymbol;
+
+       var useSymbolAsUid = NATIVE_SYMBOL$3
+         && !Symbol.sham
+         && typeof Symbol.iterator == 'symbol';
+
+       var global$1j = global$1o;
+       var getBuiltIn$9 = getBuiltIn$b;
+       var isCallable$o = isCallable$r;
+       var isPrototypeOf$9 = objectIsPrototypeOf;
+       var USE_SYMBOL_AS_UID$1 = useSymbolAsUid;
+
+       var Object$4 = global$1j.Object;
+
+       var isSymbol$6 = USE_SYMBOL_AS_UID$1 ? function (it) {
+         return typeof it == 'symbol';
+       } : function (it) {
+         var $Symbol = getBuiltIn$9('Symbol');
+         return isCallable$o($Symbol) && isPrototypeOf$9($Symbol.prototype, Object$4(it));
+       };
+
+       var global$1i = global$1o;
+
+       var String$6 = global$1i.String;
+
+       var tryToString$5 = function (argument) {
+         try {
+           return String$6(argument);
+         } catch (error) {
+           return 'Object';
+         }
+       };
+
+       var global$1h = global$1o;
+       var isCallable$n = isCallable$r;
+       var tryToString$4 = tryToString$5;
+
+       var TypeError$o = global$1h.TypeError;
+
+       // `Assert: IsCallable(argument) is true`
+       var aCallable$a = function (argument) {
+         if (isCallable$n(argument)) return argument;
+         throw TypeError$o(tryToString$4(argument) + ' is not a function');
+       };
+
+       var aCallable$9 = aCallable$a;
+
+       // `GetMethod` abstract operation
+       // https://tc39.es/ecma262/#sec-getmethod
+       var getMethod$7 = function (V, P) {
+         var func = V[P];
+         return func == null ? undefined : aCallable$9(func);
+       };
+
+       var global$1g = global$1o;
+       var call$o = functionCall;
+       var isCallable$m = isCallable$r;
+       var isObject$r = isObject$s;
+
+       var TypeError$n = global$1g.TypeError;
+
+       // `OrdinaryToPrimitive` abstract operation
+       // https://tc39.es/ecma262/#sec-ordinarytoprimitive
+       var ordinaryToPrimitive$1 = function (input, pref) {
          var fn, val;
-         if (PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject$4(val = fn.call(input))) return val;
-         if (typeof (fn = input.valueOf) == 'function' && !isObject$4(val = fn.call(input))) return val;
-         if (!PREFERRED_STRING && typeof (fn = input.toString) == 'function' && !isObject$4(val = fn.call(input))) return val;
-         throw TypeError("Can't convert object to primitive value");
+         if (pref === 'string' && isCallable$m(fn = input.toString) && !isObject$r(val = call$o(fn, input))) return val;
+         if (isCallable$m(fn = input.valueOf) && !isObject$r(val = call$o(fn, input))) return val;
+         if (pref !== 'string' && isCallable$m(fn = input.toString) && !isObject$r(val = call$o(fn, input))) return val;
+         throw TypeError$n("Can't convert object to primitive value");
+       };
+
+       var shared$5 = {exports: {}};
+
+       var isPure = false;
+
+       var global$1f = global$1o;
+
+       // eslint-disable-next-line es/no-object-defineproperty -- safe
+       var defineProperty$d = Object.defineProperty;
+
+       var setGlobal$3 = function (key, value) {
+         try {
+           defineProperty$d(global$1f, key, { value: value, configurable: true, writable: true });
+         } catch (error) {
+           global$1f[key] = value;
+         } return value;
        };
 
+       var global$1e = global$1o;
+       var setGlobal$2 = setGlobal$3;
+
+       var SHARED = '__core-js_shared__';
+       var store$4 = global$1e[SHARED] || setGlobal$2(SHARED, {});
+
+       var sharedStore = store$4;
+
+       var store$3 = sharedStore;
+
+       (shared$5.exports = function (key, value) {
+         return store$3[key] || (store$3[key] = value !== undefined ? value : {});
+       })('versions', []).push({
+         version: '3.21.0',
+         mode: 'global',
+         copyright: '© 2014-2022 Denis Pushkarev (zloirock.ru)',
+         license: 'https://github.com/zloirock/core-js/blob/v3.21.0/LICENSE',
+         source: 'https://github.com/zloirock/core-js'
+       });
+
+       var global$1d = global$1o;
+       var requireObjectCoercible$c = requireObjectCoercible$e;
+
+       var Object$3 = global$1d.Object;
+
        // `ToObject` abstract operation
        // https://tc39.es/ecma262/#sec-toobject
-       var toObject = function (argument) {
-         return Object(requireObjectCoercible(argument));
+       var toObject$i = function (argument) {
+         return Object$3(requireObjectCoercible$c(argument));
+       };
+
+       var uncurryThis$U = functionUncurryThis;
+       var toObject$h = toObject$i;
+
+       var hasOwnProperty$3 = uncurryThis$U({}.hasOwnProperty);
+
+       // `HasOwnProperty` abstract operation
+       // https://tc39.es/ecma262/#sec-hasownproperty
+       var hasOwnProperty_1 = Object.hasOwn || function hasOwn(it, key) {
+         return hasOwnProperty$3(toObject$h(it), key);
        };
 
-       var hasOwnProperty$3 = {}.hasOwnProperty;
+       var uncurryThis$T = functionUncurryThis;
+
+       var id$2 = 0;
+       var postfix = Math.random();
+       var toString$m = uncurryThis$T(1.0.toString);
 
-       var has$1 = Object.hasOwn || function hasOwn(it, key) {
-         return hasOwnProperty$3.call(toObject(it), key);
+       var uid$5 = function (key) {
+         return 'Symbol(' + (key === undefined ? '' : key) + ')_' + toString$m(++id$2 + postfix, 36);
        };
 
-       var document$3 = global$2.document;
+       var global$1c = global$1o;
+       var shared$4 = shared$5.exports;
+       var hasOwn$l = hasOwnProperty_1;
+       var uid$4 = uid$5;
+       var NATIVE_SYMBOL$2 = nativeSymbol;
+       var USE_SYMBOL_AS_UID = useSymbolAsUid;
+
+       var WellKnownSymbolsStore$1 = shared$4('wks');
+       var Symbol$3 = global$1c.Symbol;
+       var symbolFor = Symbol$3 && Symbol$3['for'];
+       var createWellKnownSymbol = USE_SYMBOL_AS_UID ? Symbol$3 : Symbol$3 && Symbol$3.withoutSetter || uid$4;
+
+       var wellKnownSymbol$t = function (name) {
+         if (!hasOwn$l(WellKnownSymbolsStore$1, name) || !(NATIVE_SYMBOL$2 || typeof WellKnownSymbolsStore$1[name] == 'string')) {
+           var description = 'Symbol.' + name;
+           if (NATIVE_SYMBOL$2 && hasOwn$l(Symbol$3, name)) {
+             WellKnownSymbolsStore$1[name] = Symbol$3[name];
+           } else if (USE_SYMBOL_AS_UID && symbolFor) {
+             WellKnownSymbolsStore$1[name] = symbolFor(description);
+           } else {
+             WellKnownSymbolsStore$1[name] = createWellKnownSymbol(description);
+           }
+         } return WellKnownSymbolsStore$1[name];
+       };
+
+       var global$1b = global$1o;
+       var call$n = functionCall;
+       var isObject$q = isObject$s;
+       var isSymbol$5 = isSymbol$6;
+       var getMethod$6 = getMethod$7;
+       var ordinaryToPrimitive = ordinaryToPrimitive$1;
+       var wellKnownSymbol$s = wellKnownSymbol$t;
+
+       var TypeError$m = global$1b.TypeError;
+       var TO_PRIMITIVE$1 = wellKnownSymbol$s('toPrimitive');
+
+       // `ToPrimitive` abstract operation
+       // https://tc39.es/ecma262/#sec-toprimitive
+       var toPrimitive$3 = function (input, pref) {
+         if (!isObject$q(input) || isSymbol$5(input)) return input;
+         var exoticToPrim = getMethod$6(input, TO_PRIMITIVE$1);
+         var result;
+         if (exoticToPrim) {
+           if (pref === undefined) pref = 'default';
+           result = call$n(exoticToPrim, input, pref);
+           if (!isObject$q(result) || isSymbol$5(result)) return result;
+           throw TypeError$m("Can't convert object to primitive value");
+         }
+         if (pref === undefined) pref = 'number';
+         return ordinaryToPrimitive(input, pref);
+       };
+
+       var toPrimitive$2 = toPrimitive$3;
+       var isSymbol$4 = isSymbol$6;
+
+       // `ToPropertyKey` abstract operation
+       // https://tc39.es/ecma262/#sec-topropertykey
+       var toPropertyKey$5 = function (argument) {
+         var key = toPrimitive$2(argument, 'string');
+         return isSymbol$4(key) ? key : key + '';
+       };
+
+       var global$1a = global$1o;
+       var isObject$p = isObject$s;
+
+       var document$3 = global$1a.document;
        // typeof document.createElement is 'object' in old IE
-       var EXISTS = isObject$4(document$3) && isObject$4(document$3.createElement);
+       var EXISTS$1 = isObject$p(document$3) && isObject$p(document$3.createElement);
 
-       var documentCreateElement = function (it) {
-         return EXISTS ? document$3.createElement(it) : {};
+       var documentCreateElement$2 = function (it) {
+         return EXISTS$1 ? document$3.createElement(it) : {};
        };
 
-       // Thank's IE8 for his funny defineProperty
-       var ie8DomDefine = !descriptors && !fails(function () {
-         // eslint-disable-next-line es/no-object-defineproperty -- requied for testing
-         return Object.defineProperty(documentCreateElement('div'), 'a', {
+       var DESCRIPTORS$p = descriptors;
+       var fails$Q = fails$V;
+       var createElement$1 = documentCreateElement$2;
+
+       // Thanks to IE8 for its funny defineProperty
+       var ie8DomDefine = !DESCRIPTORS$p && !fails$Q(function () {
+         // eslint-disable-next-line es/no-object-defineproperty -- required for testing
+         return Object.defineProperty(createElement$1('div'), 'a', {
            get: function () { return 7; }
          }).a != 7;
        });
 
+       var DESCRIPTORS$o = descriptors;
+       var call$m = functionCall;
+       var propertyIsEnumerableModule$2 = objectPropertyIsEnumerable;
+       var createPropertyDescriptor$6 = createPropertyDescriptor$7;
+       var toIndexedObject$c = toIndexedObject$d;
+       var toPropertyKey$4 = toPropertyKey$5;
+       var hasOwn$k = hasOwnProperty_1;
+       var IE8_DOM_DEFINE$1 = ie8DomDefine;
+
        // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
-       var $getOwnPropertyDescriptor$1 = Object.getOwnPropertyDescriptor;
+       var $getOwnPropertyDescriptor$2 = Object.getOwnPropertyDescriptor;
 
        // `Object.getOwnPropertyDescriptor` method
        // https://tc39.es/ecma262/#sec-object.getownpropertydescriptor
-       var f$6 = descriptors ? $getOwnPropertyDescriptor$1 : function getOwnPropertyDescriptor(O, P) {
-         O = toIndexedObject(O);
-         P = toPrimitive(P, true);
-         if (ie8DomDefine) try {
-           return $getOwnPropertyDescriptor$1(O, P);
+       objectGetOwnPropertyDescriptor.f = DESCRIPTORS$o ? $getOwnPropertyDescriptor$2 : function getOwnPropertyDescriptor(O, P) {
+         O = toIndexedObject$c(O);
+         P = toPropertyKey$4(P);
+         if (IE8_DOM_DEFINE$1) try {
+           return $getOwnPropertyDescriptor$2(O, P);
          } catch (error) { /* empty */ }
-         if (has$1(O, P)) return createPropertyDescriptor(!objectPropertyIsEnumerable.f.call(O, P), O[P]);
+         if (hasOwn$k(O, P)) return createPropertyDescriptor$6(!call$m(propertyIsEnumerableModule$2.f, O, P), O[P]);
        };
 
-       var objectGetOwnPropertyDescriptor = {
-               f: f$6
-       };
+       var objectDefineProperty = {};
 
-       var anObject = function (it) {
-         if (!isObject$4(it)) {
-           throw TypeError(String(it) + ' is not an object');
-         } return it;
+       var DESCRIPTORS$n = descriptors;
+       var fails$P = fails$V;
+
+       // V8 ~ Chrome 36-
+       // https://bugs.chromium.org/p/v8/issues/detail?id=3334
+       var v8PrototypeDefineBug = DESCRIPTORS$n && fails$P(function () {
+         // eslint-disable-next-line es/no-object-defineproperty -- required for testing
+         return Object.defineProperty(function () { /* empty */ }, 'prototype', {
+           value: 42,
+           writable: false
+         }).prototype != 42;
+       });
+
+       var global$19 = global$1o;
+       var isObject$o = isObject$s;
+
+       var String$5 = global$19.String;
+       var TypeError$l = global$19.TypeError;
+
+       // `Assert: Type(argument) is Object`
+       var anObject$n = function (argument) {
+         if (isObject$o(argument)) return argument;
+         throw TypeError$l(String$5(argument) + ' is not an object');
        };
 
+       var global$18 = global$1o;
+       var DESCRIPTORS$m = descriptors;
+       var IE8_DOM_DEFINE = ie8DomDefine;
+       var V8_PROTOTYPE_DEFINE_BUG$1 = v8PrototypeDefineBug;
+       var anObject$m = anObject$n;
+       var toPropertyKey$3 = toPropertyKey$5;
+
+       var TypeError$k = global$18.TypeError;
        // eslint-disable-next-line es/no-object-defineproperty -- safe
        var $defineProperty$1 = Object.defineProperty;
+       // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
+       var $getOwnPropertyDescriptor$1 = Object.getOwnPropertyDescriptor;
+       var ENUMERABLE = 'enumerable';
+       var CONFIGURABLE$1 = 'configurable';
+       var WRITABLE = 'writable';
 
        // `Object.defineProperty` method
        // https://tc39.es/ecma262/#sec-object.defineproperty
-       var f$5 = descriptors ? $defineProperty$1 : function defineProperty(O, P, Attributes) {
-         anObject(O);
-         P = toPrimitive(P, true);
-         anObject(Attributes);
-         if (ie8DomDefine) try {
+       objectDefineProperty.f = DESCRIPTORS$m ? V8_PROTOTYPE_DEFINE_BUG$1 ? function defineProperty(O, P, Attributes) {
+         anObject$m(O);
+         P = toPropertyKey$3(P);
+         anObject$m(Attributes);
+         if (typeof O === 'function' && P === 'prototype' && 'value' in Attributes && WRITABLE in Attributes && !Attributes[WRITABLE]) {
+           var current = $getOwnPropertyDescriptor$1(O, P);
+           if (current && current[WRITABLE]) {
+             O[P] = Attributes.value;
+             Attributes = {
+               configurable: CONFIGURABLE$1 in Attributes ? Attributes[CONFIGURABLE$1] : current[CONFIGURABLE$1],
+               enumerable: ENUMERABLE in Attributes ? Attributes[ENUMERABLE] : current[ENUMERABLE],
+               writable: false
+             };
+           }
+         } return $defineProperty$1(O, P, Attributes);
+       } : $defineProperty$1 : function defineProperty(O, P, Attributes) {
+         anObject$m(O);
+         P = toPropertyKey$3(P);
+         anObject$m(Attributes);
+         if (IE8_DOM_DEFINE) try {
            return $defineProperty$1(O, P, Attributes);
          } catch (error) { /* empty */ }
-         if ('get' in Attributes || 'set' in Attributes) throw TypeError('Accessors not supported');
+         if ('get' in Attributes || 'set' in Attributes) throw TypeError$k('Accessors not supported');
          if ('value' in Attributes) O[P] = Attributes.value;
          return O;
        };
 
-       var objectDefineProperty = {
-               f: f$5
-       };
+       var DESCRIPTORS$l = 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$b = DESCRIPTORS$l ? function (object, key, value) {
+         return definePropertyModule$7.f(object, key, createPropertyDescriptor$5(1, value));
        } : function (object, key, value) {
          object[key] = value;
          return object;
        };
 
-       var setGlobal = function (key, value) {
-         try {
-           createNonEnumerableProperty(global$2, key, value);
-         } catch (error) {
-           global$2[key] = value;
-         } return value;
-       };
+       var redefine$h = {exports: {}};
 
-       var SHARED = '__core-js_shared__';
-       var store$1 = global$2[SHARED] || setGlobal(SHARED, {});
-
-       var sharedStore = store$1;
+       var uncurryThis$S = functionUncurryThis;
+       var isCallable$l = isCallable$r;
+       var store$2 = sharedStore;
 
-       var functionToString = Function.toString;
+       var functionToString$1 = uncurryThis$S(Function.toString);
 
        // this helper broken in `core-js@3.4.1-3.4.4`, so we can't use `shared` helper
-       if (typeof sharedStore.inspectSource != 'function') {
-         sharedStore.inspectSource = function (it) {
-           return functionToString.call(it);
+       if (!isCallable$l(store$2.inspectSource)) {
+         store$2.inspectSource = function (it) {
+           return functionToString$1(it);
          };
        }
 
-       var inspectSource = sharedStore.inspectSource;
+       var inspectSource$4 = store$2.inspectSource;
 
-       var WeakMap$1 = global$2.WeakMap;
+       var global$17 = global$1o;
+       var isCallable$k = isCallable$r;
+       var inspectSource$3 = inspectSource$4;
 
-       var nativeWeakMap = typeof WeakMap$1 === 'function' && /native code/.test(inspectSource(WeakMap$1));
+       var WeakMap$1 = global$17.WeakMap;
 
-       var isPure = false;
+       var nativeWeakMap = isCallable$k(WeakMap$1) && /native code/.test(inspectSource$3(WeakMap$1));
 
-       var shared = createCommonjsModule(function (module) {
-       (module.exports = function (key, value) {
-         return sharedStore[key] || (sharedStore[key] = value !== undefined ? value : {});
-       })('versions', []).push({
-         version: '3.15.0',
-         mode: 'global',
-         copyright: '© 2021 Denis Pushkarev (zloirock.ru)'
-       });
-       });
+       var shared$3 = shared$5.exports;
+       var uid$3 = uid$5;
 
-       var id$1 = 0;
-       var postfix = Math.random();
+       var keys$3 = shared$3('keys');
 
-       var uid = function (key) {
-         return 'Symbol(' + String(key === undefined ? '' : key) + ')_' + (++id$1 + postfix).toString(36);
+       var sharedKey$4 = function (key) {
+         return keys$3[key] || (keys$3[key] = uid$3(key));
        };
 
-       var keys$3 = shared('keys');
-
-       var sharedKey = function (key) {
-         return keys$3[key] || (keys$3[key] = uid(key));
-       };
+       var hiddenKeys$6 = {};
 
-       var hiddenKeys$1 = {};
+       var NATIVE_WEAK_MAP = nativeWeakMap;
+       var global$16 = global$1o;
+       var uncurryThis$R = functionUncurryThis;
+       var isObject$n = isObject$s;
+       var createNonEnumerableProperty$a = createNonEnumerableProperty$b;
+       var hasOwn$j = hasOwnProperty_1;
+       var shared$2 = sharedStore;
+       var sharedKey$3 = sharedKey$4;
+       var hiddenKeys$5 = hiddenKeys$6;
 
        var OBJECT_ALREADY_INITIALIZED = 'Object already initialized';
-       var WeakMap = global$2.WeakMap;
+       var TypeError$j = global$16.TypeError;
+       var WeakMap = global$16.WeakMap;
        var set$4, get$5, has;
 
        var enforce = function (it) {
        var getterFor = function (TYPE) {
          return function (it) {
            var state;
-           if (!isObject$4(it) || (state = get$5(it)).type !== TYPE) {
-             throw TypeError('Incompatible receiver, ' + TYPE + ' required');
+           if (!isObject$n(it) || (state = get$5(it)).type !== TYPE) {
+             throw TypeError$j('Incompatible receiver, ' + TYPE + ' required');
            } return state;
          };
        };
 
-       if (nativeWeakMap || sharedStore.state) {
-         var store = sharedStore.state || (sharedStore.state = new WeakMap());
-         var wmget = store.get;
-         var wmhas = store.has;
-         var wmset = store.set;
+       if (NATIVE_WEAK_MAP || shared$2.state) {
+         var store$1 = shared$2.state || (shared$2.state = new WeakMap());
+         var wmget = uncurryThis$R(store$1.get);
+         var wmhas = uncurryThis$R(store$1.has);
+         var wmset = uncurryThis$R(store$1.set);
          set$4 = function (it, metadata) {
-           if (wmhas.call(store, it)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);
+           if (wmhas(store$1, it)) throw new TypeError$j(OBJECT_ALREADY_INITIALIZED);
            metadata.facade = it;
-           wmset.call(store, it, metadata);
+           wmset(store$1, it, metadata);
            return metadata;
          };
          get$5 = function (it) {
-           return wmget.call(store, it) || {};
+           return wmget(store$1, it) || {};
          };
          has = function (it) {
-           return wmhas.call(store, it);
+           return wmhas(store$1, it);
          };
        } else {
-         var STATE = sharedKey('state');
-         hiddenKeys$1[STATE] = true;
+         var STATE = sharedKey$3('state');
+         hiddenKeys$5[STATE] = true;
          set$4 = function (it, metadata) {
-           if (has$1(it, STATE)) throw new TypeError(OBJECT_ALREADY_INITIALIZED);
+           if (hasOwn$j(it, STATE)) throw new TypeError$j(OBJECT_ALREADY_INITIALIZED);
            metadata.facade = it;
-           createNonEnumerableProperty(it, STATE, metadata);
+           createNonEnumerableProperty$a(it, STATE, metadata);
            return metadata;
          };
          get$5 = function (it) {
-           return has$1(it, STATE) ? it[STATE] : {};
+           return hasOwn$j(it, STATE) ? it[STATE] : {};
          };
          has = function (it) {
-           return has$1(it, STATE);
+           return hasOwn$j(it, STATE);
          };
        }
 
          getterFor: getterFor
        };
 
-       var redefine = createCommonjsModule(function (module) {
-       var getInternalState = internalState.get;
-       var enforceInternalState = internalState.enforce;
+       var DESCRIPTORS$k = descriptors;
+       var hasOwn$i = hasOwnProperty_1;
+
+       var FunctionPrototype$2 = Function.prototype;
+       // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
+       var getDescriptor = DESCRIPTORS$k && Object.getOwnPropertyDescriptor;
+
+       var EXISTS = hasOwn$i(FunctionPrototype$2, 'name');
+       // additional protection from minified / mangled / dropped function names
+       var PROPER = EXISTS && (function something() { /* empty */ }).name === 'something';
+       var CONFIGURABLE = EXISTS && (!DESCRIPTORS$k || (DESCRIPTORS$k && getDescriptor(FunctionPrototype$2, 'name').configurable));
+
+       var functionName = {
+         EXISTS: EXISTS,
+         PROPER: PROPER,
+         CONFIGURABLE: CONFIGURABLE
+       };
+
+       var global$15 = global$1o;
+       var isCallable$j = isCallable$r;
+       var hasOwn$h = hasOwnProperty_1;
+       var createNonEnumerableProperty$9 = createNonEnumerableProperty$b;
+       var setGlobal$1 = setGlobal$3;
+       var inspectSource$2 = inspectSource$4;
+       var InternalStateModule$9 = internalState;
+       var CONFIGURABLE_FUNCTION_NAME$2 = functionName.CONFIGURABLE;
+
+       var getInternalState$7 = InternalStateModule$9.get;
+       var enforceInternalState$1 = InternalStateModule$9.enforce;
        var TEMPLATE = String(String).split('String');
 
-       (module.exports = function (O, key, value, options) {
+       (redefine$h.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 name = options && options.name !== undefined ? options.name : key;
          var state;
-         if (typeof value == 'function') {
-           if (typeof key == 'string' && !has$1(value, 'name')) {
-             createNonEnumerableProperty(value, 'name', key);
+         if (isCallable$j(value)) {
+           if (String(name).slice(0, 7) === 'Symbol(') {
+             name = '[' + String(name).replace(/^Symbol\(([^)]*)\)/, '$1') + ']';
+           }
+           if (!hasOwn$h(value, 'name') || (CONFIGURABLE_FUNCTION_NAME$2 && value.name !== name)) {
+             createNonEnumerableProperty$9(value, 'name', name);
            }
-           state = enforceInternalState(value);
+           state = enforceInternalState$1(value);
            if (!state.source) {
-             state.source = TEMPLATE.join(typeof key == 'string' ? key : '');
+             state.source = TEMPLATE.join(typeof name == 'string' ? name : '');
            }
          }
-         if (O === global$2) {
+         if (O === global$15) {
            if (simple) O[key] = value;
-           else setGlobal(key, value);
+           else setGlobal$1(key, value);
            return;
          } else if (!unsafe) {
            delete O[key];
            simple = true;
          }
          if (simple) O[key] = value;
-         else createNonEnumerableProperty(O, key, value);
+         else createNonEnumerableProperty$9(O, key, value);
        // add fake Function#toString for correct work wrapped methods / constructors with methods like LoDash isNative
        })(Function.prototype, 'toString', function toString() {
-         return typeof this == 'function' && getInternalState(this).source || inspectSource(this);
-       });
+         return isCallable$j(this) && getInternalState$7(this).source || inspectSource$2(this);
        });
 
-       var path = global$2;
+       var objectGetOwnPropertyNames = {};
 
-       var aFunction$1 = function (variable) {
-         return typeof variable == 'function' ? variable : undefined;
+       var ceil$1 = Math.ceil;
+       var floor$8 = Math.floor;
+
+       // `ToIntegerOrInfinity` abstract operation
+       // https://tc39.es/ecma262/#sec-tointegerorinfinity
+       var toIntegerOrInfinity$b = function (argument) {
+         var number = +argument;
+         // eslint-disable-next-line no-self-compare -- safe
+         return number !== number || number === 0 ? 0 : (number > 0 ? floor$8 : ceil$1)(number);
        };
 
-       var getBuiltIn = function (namespace, method) {
-         return arguments.length < 2 ? aFunction$1(path[namespace]) || aFunction$1(global$2[namespace])
-           : path[namespace] && path[namespace][method] || global$2[namespace] && global$2[namespace][method];
-       };
+       var toIntegerOrInfinity$a = toIntegerOrInfinity$b;
 
-       var ceil$1 = Math.ceil;
-       var floor$7 = Math.floor;
+       var max$5 = Math.max;
+       var min$9 = Math.min;
 
-       // `ToInteger` abstract operation
-       // https://tc39.es/ecma262/#sec-tointeger
-       var toInteger = function (argument) {
-         return isNaN(argument = +argument) ? 0 : (argument > 0 ? floor$7 : ceil$1)(argument);
+       // 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$9 = function (index, length) {
+         var integer = toIntegerOrInfinity$a(index);
+         return integer < 0 ? max$5(integer + length, 0) : min$9(integer, length);
        };
 
-       var min$9 = Math.min;
+       var toIntegerOrInfinity$9 = toIntegerOrInfinity$b;
+
+       var min$8 = Math.min;
 
        // `ToLength` abstract operation
        // https://tc39.es/ecma262/#sec-tolength
-       var toLength = function (argument) {
-         return argument > 0 ? min$9(toInteger(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991
+       var toLength$c = function (argument) {
+         return argument > 0 ? min$8(toIntegerOrInfinity$9(argument), 0x1FFFFFFFFFFFFF) : 0; // 2 ** 53 - 1 == 9007199254740991
        };
 
-       var max$4 = Math.max;
-       var min$8 = Math.min;
+       var toLength$b = toLength$c;
 
-       // 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$4(integer + length, 0) : min$8(integer, length);
+       // `LengthOfArrayLike` abstract operation
+       // https://tc39.es/ecma262/#sec-lengthofarraylike
+       var lengthOfArrayLike$i = function (obj) {
+         return toLength$b(obj.length);
        };
 
+       var toIndexedObject$b = toIndexedObject$d;
+       var toAbsoluteIndex$8 = toAbsoluteIndex$9;
+       var lengthOfArrayLike$h = lengthOfArrayLike$i;
+
        // `Array.prototype.{ indexOf, includes }` methods implementation
        var createMethod$6 = function (IS_INCLUDES) {
          return function ($this, el, fromIndex) {
-           var O = toIndexedObject($this);
-           var length = toLength(O.length);
-           var index = toAbsoluteIndex(fromIndex, length);
+           var O = toIndexedObject$b($this);
+           var length = lengthOfArrayLike$h(O);
+           var index = toAbsoluteIndex$8(fromIndex, length);
            var value;
            // Array#includes uses SameValueZero equality algorithm
            // eslint-disable-next-line no-self-compare -- NaN check
          indexOf: createMethod$6(false)
        };
 
-       var indexOf = arrayIncludes.indexOf;
+       var uncurryThis$Q = functionUncurryThis;
+       var hasOwn$g = hasOwnProperty_1;
+       var toIndexedObject$a = toIndexedObject$d;
+       var indexOf$1 = arrayIncludes.indexOf;
+       var hiddenKeys$4 = hiddenKeys$6;
 
+       var push$a = uncurryThis$Q([].push);
 
        var objectKeysInternal = function (object, names) {
-         var O = toIndexedObject(object);
+         var O = toIndexedObject$a(object);
          var i = 0;
          var result = [];
          var key;
-         for (key in O) !has$1(hiddenKeys$1, key) && has$1(O, key) && result.push(key);
+         for (key in O) !hasOwn$g(hiddenKeys$4, key) && hasOwn$g(O, key) && push$a(result, key);
          // Don't enum bug & hidden keys
-         while (names.length > i) if (has$1(O, key = names[i++])) {
-           ~indexOf(result, key) || result.push(key);
+         while (names.length > i) if (hasOwn$g(O, key = names[i++])) {
+           ~indexOf$1(result, key) || push$a(result, key);
          }
          return result;
        };
 
        // IE8- don't enum bug keys
-       var enumBugKeys = [
+       var enumBugKeys$3 = [
          'constructor',
          'hasOwnProperty',
          'isPrototypeOf',
          'valueOf'
        ];
 
-       var hiddenKeys = enumBugKeys.concat('length', 'prototype');
+       var internalObjectKeys$1 = objectKeysInternal;
+       var enumBugKeys$2 = enumBugKeys$3;
+
+       var hiddenKeys$3 = enumBugKeys$2.concat('length', 'prototype');
 
        // `Object.getOwnPropertyNames` method
        // https://tc39.es/ecma262/#sec-object.getownpropertynames
        // eslint-disable-next-line es/no-object-getownpropertynames -- safe
-       var f$4 = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
-         return objectKeysInternal(O, hiddenKeys);
+       objectGetOwnPropertyNames.f = Object.getOwnPropertyNames || function getOwnPropertyNames(O) {
+         return internalObjectKeys$1(O, hiddenKeys$3);
        };
 
-       var objectGetOwnPropertyNames = {
-               f: f$4
-       };
+       var objectGetOwnPropertySymbols = {};
 
        // eslint-disable-next-line es/no-object-getownpropertysymbols -- safe
-       var f$3 = Object.getOwnPropertySymbols;
+       objectGetOwnPropertySymbols.f = Object.getOwnPropertySymbols;
 
-       var objectGetOwnPropertySymbols = {
-               f: f$3
-       };
+       var getBuiltIn$8 = getBuiltIn$b;
+       var uncurryThis$P = functionUncurryThis;
+       var getOwnPropertyNamesModule$2 = objectGetOwnPropertyNames;
+       var getOwnPropertySymbolsModule$2 = objectGetOwnPropertySymbols;
+       var anObject$l = anObject$n;
+
+       var concat$3 = uncurryThis$P([].concat);
 
        // 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;
-         return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
+       var ownKeys$1 = getBuiltIn$8('Reflect', 'ownKeys') || function ownKeys(it) {
+         var keys = getOwnPropertyNamesModule$2.f(anObject$l(it));
+         var getOwnPropertySymbols = getOwnPropertySymbolsModule$2.f;
+         return getOwnPropertySymbols ? concat$3(keys, getOwnPropertySymbols(it)) : keys;
        };
 
-       var copyConstructorProperties = function (target, source) {
+       var hasOwn$f = hasOwnProperty_1;
+       var ownKeys = ownKeys$1;
+       var getOwnPropertyDescriptorModule$3 = objectGetOwnPropertyDescriptor;
+       var definePropertyModule$6 = objectDefineProperty;
+
+       var copyConstructorProperties$2 = function (target, source, exceptions) {
          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];
-           if (!has$1(target, key)) defineProperty(target, key, getOwnPropertyDescriptor(source, key));
+           if (!hasOwn$f(target, key) && !(exceptions && hasOwn$f(exceptions, key))) {
+             defineProperty(target, key, getOwnPropertyDescriptor(source, key));
+           }
          }
        };
 
+       var fails$O = fails$V;
+       var isCallable$i = isCallable$r;
+
        var replacement = /#|\.prototype\./;
 
-       var isForced = function (feature, detection) {
+       var isForced$5 = function (feature, detection) {
          var value = data[normalize$1(feature)];
          return value == POLYFILL ? true
            : value == NATIVE ? false
-           : typeof detection == 'function' ? fails(detection)
+           : isCallable$i(detection) ? fails$O(detection)
            : !!detection;
        };
 
-       var normalize$1 = isForced.normalize = function (string) {
+       var normalize$1 = isForced$5.normalize = function (string) {
          return String(string).replace(replacement, '.').toLowerCase();
        };
 
-       var data = isForced.data = {};
-       var NATIVE = isForced.NATIVE = 'N';
-       var POLYFILL = isForced.POLYFILL = 'P';
+       var data = isForced$5.data = {};
+       var NATIVE = isForced$5.NATIVE = 'N';
+       var POLYFILL = isForced$5.POLYFILL = 'P';
 
-       var isForced_1 = isForced;
+       var isForced_1 = isForced$5;
 
+       var global$14 = global$1o;
        var getOwnPropertyDescriptor$4 = objectGetOwnPropertyDescriptor.f;
-
-
-
-
-
+       var createNonEnumerableProperty$8 = createNonEnumerableProperty$b;
+       var redefine$g = redefine$h.exports;
+       var setGlobal = setGlobal$3;
+       var copyConstructorProperties$1 = copyConstructorProperties$2;
+       var isForced$4 = isForced_1;
 
        /*
          options.target      - name of the target object
          options.sham        - add a flag to not completely full polyfills
          options.enumerable  - export as enumerable property
          options.noTargetGet - prevent calling a getter on target
+         options.name        - the .name of the function if it does not match the key
        */
        var _export = function (options, source) {
          var TARGET = options.target;
          var STATIC = options.stat;
          var FORCED, target, key, targetProperty, sourceProperty, descriptor;
          if (GLOBAL) {
-           target = global$2;
+           target = global$14;
          } else if (STATIC) {
-           target = global$2[TARGET] || setGlobal(TARGET, {});
+           target = global$14[TARGET] || setGlobal(TARGET, {});
          } else {
-           target = (global$2[TARGET] || {}).prototype;
+           target = (global$14[TARGET] || {}).prototype;
          }
          if (target) for (key in source) {
            sourceProperty = source[key];
              descriptor = getOwnPropertyDescriptor$4(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;
-             copyConstructorProperties(sourceProperty, targetProperty);
+             if (typeof sourceProperty == typeof targetProperty) continue;
+             copyConstructorProperties$1(sourceProperty, targetProperty);
            }
            // add a flag to not completely full polyfills
            if (options.sham || (targetProperty && targetProperty.sham)) {
-             createNonEnumerableProperty(sourceProperty, 'sham', true);
+             createNonEnumerableProperty$8(sourceProperty, 'sham', true);
            }
            // extend global
-           redefine(target, key, sourceProperty, options);
+           redefine$g(target, key, sourceProperty, options);
          }
        };
 
+       var $$1e = _export;
+       var global$13 = global$1o;
+       var uncurryThis$O = functionUncurryThis;
+
+       var Date$1 = global$13.Date;
+       var getTime$2 = uncurryThis$O(Date$1.prototype.getTime);
+
        // `Date.now` method
        // https://tc39.es/ecma262/#sec-date.now
-       _export({ target: 'Date', stat: true }, {
+       $$1e({ target: 'Date', stat: true }, {
          now: function now() {
-           return new Date().getTime();
+           return getTime$2(new Date$1());
          }
        });
 
+       var uncurryThis$N = functionUncurryThis;
+       var redefine$f = redefine$h.exports;
+
        var DatePrototype$1 = Date.prototype;
        var INVALID_DATE = 'Invalid Date';
        var TO_STRING$1 = 'toString';
-       var nativeDateToString = DatePrototype$1[TO_STRING$1];
-       var getTime$1 = DatePrototype$1.getTime;
+       var un$DateToString = uncurryThis$N(DatePrototype$1[TO_STRING$1]);
+       var getTime$1 = uncurryThis$N(DatePrototype$1.getTime);
 
        // `Date.prototype.toString` method
        // https://tc39.es/ecma262/#sec-date.prototype.tostring
-       if (new Date(NaN) + '' != INVALID_DATE) {
-         redefine(DatePrototype$1, TO_STRING$1, function toString() {
-           var value = getTime$1.call(this);
+       if (String(new Date(NaN)) != INVALID_DATE) {
+         redefine$f(DatePrototype$1, TO_STRING$1, function toString() {
+           var value = getTime$1(this);
            // eslint-disable-next-line no-self-compare -- NaN check
-           return value === value ? nativeDateToString.call(this) : INVALID_DATE;
+           return value === value ? un$DateToString(this) : INVALID_DATE;
          });
        }
 
        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);
+         return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (obj) {
+           return typeof obj;
+         } : function (obj) {
+           return obj && "function" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
+         }, _typeof(obj);
        }
 
        function _classCallCheck$1(instance, Constructor) {
        function _createClass$1(Constructor, protoProps, staticProps) {
          if (protoProps) _defineProperties$1(Constructor.prototype, protoProps);
          if (staticProps) _defineProperties$1(Constructor, staticProps);
+         Object.defineProperty(Constructor, "prototype", {
+           writable: false
+         });
          return Constructor;
        }
 
          };
        }
 
-       var engineUserAgent = getBuiltIn('navigator', 'userAgent') || '';
+       var $$1d = _export;
+       var global$12 = global$1o;
 
-       var process$4 = global$2.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 (engineUserAgent) {
-         match = engineUserAgent.match(/Edge\/(\d+)/);
-         if (!match || match[1] >= 74) {
-           match = engineUserAgent.match(/Chrome\/(\d+)/);
-           if (match) version$1 = match[1];
-         }
-       }
-
-       var engineV8Version = version$1 && +version$1;
-
-       /* eslint-disable es/no-symbol -- required for testing */
-
-       // eslint-disable-next-line es/no-object-getownpropertysymbols -- required for testing
-       var nativeSymbol = !!Object.getOwnPropertySymbols && !fails(function () {
-         var symbol = Symbol();
-         // Chrome 38 Symbol has incorrect toString conversion
-         // `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 && engineV8Version && engineV8Version < 41;
+       // `globalThis` object
+       // https://tc39.es/ecma262/#sec-globalthis
+       $$1d({ global: true }, {
+         globalThis: global$12
        });
 
-       /* eslint-disable es/no-symbol -- required for testing */
-
-       var useSymbolAsUid = nativeSymbol
-         && !Symbol.sham
-         && typeof Symbol.iterator == 'symbol';
+       var global$11 = global$1o;
 
-       var WellKnownSymbolsStore$1 = shared('wks');
-       var Symbol$1 = global$2.Symbol;
-       var createWellKnownSymbol = useSymbolAsUid ? Symbol$1 : Symbol$1 && Symbol$1.withoutSetter || uid;
+       var path$1 = global$11;
 
-       var wellKnownSymbol = function (name) {
-         if (!has$1(WellKnownSymbolsStore$1, name) || !(nativeSymbol || typeof WellKnownSymbolsStore$1[name] == 'string')) {
-           if (nativeSymbol && has$1(Symbol$1, name)) {
-             WellKnownSymbolsStore$1[name] = Symbol$1[name];
-           } else {
-             WellKnownSymbolsStore$1[name] = createWellKnownSymbol('Symbol.' + name);
-           }
-         } return WellKnownSymbolsStore$1[name];
-       };
+       var wellKnownSymbolWrapped = {};
 
-       var f$2 = wellKnownSymbol;
+       var wellKnownSymbol$r = wellKnownSymbol$t;
 
-       var wellKnownSymbolWrapped = {
-               f: f$2
-       };
+       wellKnownSymbolWrapped.f = wellKnownSymbol$r;
 
-       var defineProperty$9 = objectDefineProperty.f;
+       var path = path$1;
+       var hasOwn$e = hasOwnProperty_1;
+       var wrappedWellKnownSymbolModule$1 = wellKnownSymbolWrapped;
+       var defineProperty$c = objectDefineProperty.f;
 
-       var defineWellKnownSymbol = function (NAME) {
+       var defineWellKnownSymbol$4 = function (NAME) {
          var Symbol = path.Symbol || (path.Symbol = {});
-         if (!has$1(Symbol, NAME)) defineProperty$9(Symbol, NAME, {
-           value: wellKnownSymbolWrapped.f(NAME)
+         if (!hasOwn$e(Symbol, NAME)) defineProperty$c(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('iterator');
+       defineWellKnownSymbol$3('iterator');
+
+       var objectDefineProperties = {};
+
+       var internalObjectKeys = objectKeysInternal;
+       var enumBugKeys$1 = enumBugKeys$3;
 
        // `Object.keys` method
        // https://tc39.es/ecma262/#sec-object.keys
        // eslint-disable-next-line es/no-object-keys -- safe
-       var objectKeys = Object.keys || function keys(O) {
-         return objectKeysInternal(O, enumBugKeys);
+       var objectKeys$4 = Object.keys || function keys(O) {
+         return internalObjectKeys(O, enumBugKeys$1);
        };
 
+       var DESCRIPTORS$j = descriptors;
+       var V8_PROTOTYPE_DEFINE_BUG = v8PrototypeDefineBug;
+       var definePropertyModule$5 = objectDefineProperty;
+       var anObject$k = anObject$n;
+       var toIndexedObject$9 = toIndexedObject$d;
+       var objectKeys$3 = objectKeys$4;
+
        // `Object.defineProperties` method
        // https://tc39.es/ecma262/#sec-object.defineproperties
        // eslint-disable-next-line es/no-object-defineproperties -- safe
-       var objectDefineProperties = descriptors ? Object.defineProperties : function defineProperties(O, Properties) {
-         anObject(O);
-         var keys = objectKeys(Properties);
+       objectDefineProperties.f = DESCRIPTORS$j && !V8_PROTOTYPE_DEFINE_BUG ? Object.defineProperties : function defineProperties(O, Properties) {
+         anObject$k(O);
+         var props = toIndexedObject$9(Properties);
+         var keys = objectKeys$3(Properties);
          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++], props[key]);
          return O;
        };
 
-       var html = getBuiltIn('document', 'documentElement');
+       var getBuiltIn$7 = getBuiltIn$b;
+
+       var html$2 = getBuiltIn$7('document', 'documentElement');
+
+       /* global ActiveXObject -- old IE, WSH */
+
+       var anObject$j = anObject$n;
+       var definePropertiesModule$1 = objectDefineProperties;
+       var enumBugKeys = enumBugKeys$3;
+       var hiddenKeys$2 = hiddenKeys$6;
+       var html$1 = html$2;
+       var documentCreateElement$1 = documentCreateElement$2;
+       var sharedKey$2 = sharedKey$4;
 
        var GT = '>';
        var LT = '<';
        var PROTOTYPE$2 = 'prototype';
        var SCRIPT = 'script';
-       var IE_PROTO$1 = sharedKey('IE_PROTO');
+       var IE_PROTO$1 = sharedKey$2('IE_PROTO');
 
        var EmptyConstructor = function () { /* empty */ };
 
        // Create object with fake `null` prototype: use iframe Object with cleared prototype
        var NullProtoObjectViaIFrame = function () {
          // Thrash, waste and sodomy: IE GC bug
-         var iframe = documentCreateElement('iframe');
+         var iframe = documentCreateElement$1('iframe');
          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;
        var activeXDocument;
        var NullProtoObject = function () {
          try {
-           /* global ActiveXObject -- old IE */
-           activeXDocument = document.domain && new ActiveXObject('htmlfile');
+           activeXDocument = new ActiveXObject('htmlfile');
          } catch (error) { /* ignore */ }
-         NullProtoObject = activeXDocument ? NullProtoObjectViaActiveX(activeXDocument) : NullProtoObjectViaIFrame();
+         NullProtoObject = typeof document != 'undefined'
+           ? document.domain && activeXDocument
+             ? NullProtoObjectViaActiveX(activeXDocument) // old IE
+             : NullProtoObjectViaIFrame()
+           : NullProtoObjectViaActiveX(activeXDocument); // WSH
          var length = enumBugKeys.length;
          while (length--) delete NullProtoObject[PROTOTYPE$2][enumBugKeys[length]];
          return NullProtoObject();
        };
 
-       hiddenKeys$1[IE_PROTO$1] = true;
+       hiddenKeys$2[IE_PROTO$1] = true;
 
        // `Object.create` method
        // https://tc39.es/ecma262/#sec-object.create
        var objectCreate = Object.create || function create(O, Properties) {
          var result;
          if (O !== null) {
-           EmptyConstructor[PROTOTYPE$2] = anObject(O);
+           EmptyConstructor[PROTOTYPE$2] = anObject$j(O);
            result = new EmptyConstructor();
            EmptyConstructor[PROTOTYPE$2] = null;
            // add "__proto__" for Object.getPrototypeOf polyfill
            result[IE_PROTO$1] = O;
          } else result = NullProtoObject();
-         return Properties === undefined ? result : objectDefineProperties(result, Properties);
+         return Properties === undefined ? result : definePropertiesModule$1.f(result, Properties);
        };
 
-       var UNSCOPABLES = wellKnownSymbol('unscopables');
+       var wellKnownSymbol$q = wellKnownSymbol$t;
+       var create$a = objectCreate;
+       var definePropertyModule$4 = objectDefineProperty;
+
+       var UNSCOPABLES = wellKnownSymbol$q('unscopables');
        var ArrayPrototype$1 = Array.prototype;
 
        // Array.prototype[@@unscopables]
        // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
        if (ArrayPrototype$1[UNSCOPABLES] == undefined) {
-         objectDefineProperty.f(ArrayPrototype$1, UNSCOPABLES, {
+         definePropertyModule$4.f(ArrayPrototype$1, UNSCOPABLES, {
            configurable: true,
-           value: objectCreate(null)
+           value: create$a(null)
          });
        }
 
        // add a key to Array.prototype[@@unscopables]
-       var addToUnscopables = function (key) {
+       var addToUnscopables$6 = function (key) {
          ArrayPrototype$1[UNSCOPABLES][key] = true;
        };
 
        var iterators = {};
 
-       var correctPrototypeGetter = !fails(function () {
+       var fails$N = fails$V;
+
+       var correctPrototypeGetter = !fails$N(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 IE_PROTO = sharedKey('IE_PROTO');
-       var ObjectPrototype$3 = Object.prototype;
+       var global$10 = global$1o;
+       var hasOwn$d = hasOwnProperty_1;
+       var isCallable$h = isCallable$r;
+       var toObject$g = toObject$i;
+       var sharedKey$1 = sharedKey$4;
+       var CORRECT_PROTOTYPE_GETTER$1 = correctPrototypeGetter;
+
+       var IE_PROTO = sharedKey$1('IE_PROTO');
+       var Object$2 = global$10.Object;
+       var ObjectPrototype$4 = Object$2.prototype;
 
        // `Object.getPrototypeOf` method
        // https://tc39.es/ecma262/#sec-object.getprototypeof
-       // eslint-disable-next-line es/no-object-getprototypeof -- safe
-       var objectGetPrototypeOf = correctPrototypeGetter ? Object.getPrototypeOf : function (O) {
-         O = toObject(O);
-         if (has$1(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 objectGetPrototypeOf = CORRECT_PROTOTYPE_GETTER$1 ? Object$2.getPrototypeOf : function (O) {
+         var object = toObject$g(O);
+         if (hasOwn$d(object, IE_PROTO)) return object[IE_PROTO];
+         var constructor = object.constructor;
+         if (isCallable$h(constructor) && object instanceof constructor) {
+           return constructor.prototype;
+         } return object instanceof Object$2 ? ObjectPrototype$4 : null;
        };
 
-       var ITERATOR$8 = wellKnownSymbol('iterator');
-       var BUGGY_SAFARI_ITERATORS$1 = false;
+       var fails$M = fails$V;
+       var isCallable$g = isCallable$r;
+       var getPrototypeOf$4 = objectGetPrototypeOf;
+       var redefine$e = redefine$h.exports;
+       var wellKnownSymbol$p = wellKnownSymbol$t;
 
-       var returnThis$2 = function () { return this; };
+       var ITERATOR$a = wellKnownSymbol$p('iterator');
+       var BUGGY_SAFARI_ITERATORS$1 = false;
 
        // `%IteratorPrototype%` object
        // https://tc39.es/ecma262/#sec-%iteratorprototype%-object
          // Safari 8 has buggy iterators w/o `next`
          if (!('next' in arrayIterator)) BUGGY_SAFARI_ITERATORS$1 = true;
          else {
-           PrototypeOfArrayIteratorPrototype = objectGetPrototypeOf(objectGetPrototypeOf(arrayIterator));
+           PrototypeOfArrayIteratorPrototype = getPrototypeOf$4(getPrototypeOf$4(arrayIterator));
            if (PrototypeOfArrayIteratorPrototype !== Object.prototype) IteratorPrototype$2 = PrototypeOfArrayIteratorPrototype;
          }
        }
 
-       var NEW_ITERATOR_PROTOTYPE = IteratorPrototype$2 == undefined || fails(function () {
+       var NEW_ITERATOR_PROTOTYPE = IteratorPrototype$2 == undefined || fails$M(function () {
          var test = {};
          // FF44- legacy iterators case
-         return IteratorPrototype$2[ITERATOR$8].call(test) !== test;
+         return IteratorPrototype$2[ITERATOR$a].call(test) !== test;
        });
 
        if (NEW_ITERATOR_PROTOTYPE) IteratorPrototype$2 = {};
 
        // `%IteratorPrototype%[@@iterator]()` method
        // https://tc39.es/ecma262/#sec-%iteratorprototype%-@@iterator
-       if (!has$1(IteratorPrototype$2, ITERATOR$8)) {
-         createNonEnumerableProperty(IteratorPrototype$2, ITERATOR$8, returnThis$2);
+       if (!isCallable$g(IteratorPrototype$2[ITERATOR$a])) {
+         redefine$e(IteratorPrototype$2, ITERATOR$a, function () {
+           return this;
+         });
        }
 
        var iteratorsCore = {
          BUGGY_SAFARI_ITERATORS: BUGGY_SAFARI_ITERATORS$1
        };
 
-       var defineProperty$8 = objectDefineProperty.f;
-
-
+       var defineProperty$b = objectDefineProperty.f;
+       var hasOwn$c = hasOwnProperty_1;
+       var wellKnownSymbol$o = wellKnownSymbol$t;
 
-       var TO_STRING_TAG$4 = wellKnownSymbol('toStringTag');
+       var TO_STRING_TAG$4 = wellKnownSymbol$o('toStringTag');
 
-       var setToStringTag = function (it, TAG, STATIC) {
-         if (it && !has$1(it = STATIC ? it : it.prototype, TO_STRING_TAG$4)) {
-           defineProperty$8(it, TO_STRING_TAG$4, { configurable: true, value: TAG });
+       var setToStringTag$a = function (target, TAG, STATIC) {
+         if (target && !STATIC) target = target.prototype;
+         if (target && !hasOwn$c(target, TO_STRING_TAG$4)) {
+           defineProperty$b(target, TO_STRING_TAG$4, { configurable: true, value: TAG });
          }
        };
 
        var IteratorPrototype$1 = iteratorsCore.IteratorPrototype;
-
-
-
-
+       var create$9 = objectCreate;
+       var createPropertyDescriptor$4 = createPropertyDescriptor$7;
+       var setToStringTag$9 = setToStringTag$a;
+       var Iterators$4 = iterators;
 
        var returnThis$1 = function () { return this; };
 
-       var createIteratorConstructor = function (IteratorConstructor, NAME, next) {
+       var createIteratorConstructor$2 = function (IteratorConstructor, NAME, next, ENUMERABLE_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;
+         IteratorConstructor.prototype = create$9(IteratorPrototype$1, { next: createPropertyDescriptor$4(+!ENUMERABLE_NEXT, next) });
+         setToStringTag$9(IteratorConstructor, TO_STRING_TAG, false);
+         Iterators$4[TO_STRING_TAG] = returnThis$1;
          return IteratorConstructor;
        };
 
-       var aPossiblePrototype = function (it) {
-         if (!isObject$4(it) && it !== null) {
-           throw TypeError("Can't set " + String(it) + ' as a prototype');
-         } return it;
+       var global$$ = global$1o;
+       var isCallable$f = isCallable$r;
+
+       var String$4 = global$$.String;
+       var TypeError$i = global$$.TypeError;
+
+       var aPossiblePrototype$1 = function (argument) {
+         if (typeof argument == 'object' || isCallable$f(argument)) return argument;
+         throw TypeError$i("Can't set " + String$4(argument) + ' as a prototype');
        };
 
        /* eslint-disable no-proto -- safe */
 
+       var uncurryThis$M = functionUncurryThis;
+       var anObject$i = anObject$n;
+       var aPossiblePrototype = aPossiblePrototype$1;
+
        // `Object.setPrototypeOf` method
        // https://tc39.es/ecma262/#sec-object.setprototypeof
        // Works with __proto__ only. Old v8 can't work with null proto objects.
          var setter;
          try {
            // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
-           setter = Object.getOwnPropertyDescriptor(Object.prototype, '__proto__').set;
-           setter.call(test, []);
+           setter = uncurryThis$M(Object.getOwnPropertyDescriptor(Object.prototype, '__proto__').set);
+           setter(test, []);
            CORRECT_SETTER = test instanceof Array;
          } catch (error) { /* empty */ }
          return function setPrototypeOf(O, proto) {
-           anObject(O);
+           anObject$i(O);
            aPossiblePrototype(proto);
-           if (CORRECT_SETTER) setter.call(O, proto);
+           if (CORRECT_SETTER) setter(O, proto);
            else O.__proto__ = proto;
            return O;
          };
        }() : undefined);
 
-       var IteratorPrototype = iteratorsCore.IteratorPrototype;
-       var BUGGY_SAFARI_ITERATORS = iteratorsCore.BUGGY_SAFARI_ITERATORS;
-       var ITERATOR$7 = wellKnownSymbol('iterator');
+       var $$1c = _export;
+       var call$l = functionCall;
+       var FunctionName$1 = functionName;
+       var isCallable$e = isCallable$r;
+       var createIteratorConstructor$1 = createIteratorConstructor$2;
+       var getPrototypeOf$3 = objectGetPrototypeOf;
+       var setPrototypeOf$6 = objectSetPrototypeOf;
+       var setToStringTag$8 = setToStringTag$a;
+       var createNonEnumerableProperty$7 = createNonEnumerableProperty$b;
+       var redefine$d = redefine$h.exports;
+       var wellKnownSymbol$n = wellKnownSymbol$t;
+       var Iterators$3 = iterators;
+       var IteratorsCore = iteratorsCore;
+
+       var PROPER_FUNCTION_NAME$3 = FunctionName$1.PROPER;
+       var CONFIGURABLE_FUNCTION_NAME$1 = FunctionName$1.CONFIGURABLE;
+       var IteratorPrototype = IteratorsCore.IteratorPrototype;
+       var BUGGY_SAFARI_ITERATORS = IteratorsCore.BUGGY_SAFARI_ITERATORS;
+       var ITERATOR$9 = wellKnownSymbol$n('iterator');
        var KEYS = 'keys';
        var VALUES = 'values';
        var ENTRIES = 'entries';
 
        var returnThis = function () { return this; };
 
-       var defineIterator = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {
-         createIteratorConstructor(IteratorConstructor, NAME, next);
+       var defineIterator$3 = function (Iterable, NAME, IteratorConstructor, next, DEFAULT, IS_SET, FORCED) {
+         createIteratorConstructor$1(IteratorConstructor, NAME, next);
 
          var getIterationMethod = function (KIND) {
            if (KIND === DEFAULT && defaultIterator) return defaultIterator;
          var TO_STRING_TAG = NAME + ' Iterator';
          var INCORRECT_VALUES_NAME = false;
          var IterablePrototype = Iterable.prototype;
-         var nativeIterator = IterablePrototype[ITERATOR$7]
+         var nativeIterator = IterablePrototype[ITERATOR$9]
            || IterablePrototype['@@iterator']
            || DEFAULT && IterablePrototype[DEFAULT];
          var defaultIterator = !BUGGY_SAFARI_ITERATORS && nativeIterator || getIterationMethod(DEFAULT);
 
          // fix native
          if (anyNativeIterator) {
-           CurrentIteratorPrototype = objectGetPrototypeOf(anyNativeIterator.call(new Iterable()));
-           if (IteratorPrototype !== Object.prototype && CurrentIteratorPrototype.next) {
-             if (objectGetPrototypeOf(CurrentIteratorPrototype) !== IteratorPrototype) {
-               if (objectSetPrototypeOf) {
-                 objectSetPrototypeOf(CurrentIteratorPrototype, IteratorPrototype);
-               } else if (typeof CurrentIteratorPrototype[ITERATOR$7] != 'function') {
-                 createNonEnumerableProperty(CurrentIteratorPrototype, ITERATOR$7, returnThis);
+           CurrentIteratorPrototype = getPrototypeOf$3(anyNativeIterator.call(new Iterable()));
+           if (CurrentIteratorPrototype !== Object.prototype && CurrentIteratorPrototype.next) {
+             if (getPrototypeOf$3(CurrentIteratorPrototype) !== IteratorPrototype) {
+               if (setPrototypeOf$6) {
+                 setPrototypeOf$6(CurrentIteratorPrototype, IteratorPrototype);
+               } else if (!isCallable$e(CurrentIteratorPrototype[ITERATOR$9])) {
+                 redefine$d(CurrentIteratorPrototype, ITERATOR$9, returnThis);
                }
              }
              // Set @@toStringTag to native iterators
-             setToStringTag(CurrentIteratorPrototype, TO_STRING_TAG, true);
+             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(IterablePrototype, ITERATOR$7, defaultIterator);
+         if (PROPER_FUNCTION_NAME$3 && DEFAULT == VALUES && nativeIterator && nativeIterator.name !== VALUES) {
+           if (CONFIGURABLE_FUNCTION_NAME$1) {
+             createNonEnumerableProperty$7(IterablePrototype, 'name', VALUES);
+           } else {
+             INCORRECT_VALUES_NAME = true;
+             defaultIterator = function values() { return call$l(nativeIterator, this); };
+           }
          }
-         iterators[NAME] = defaultIterator;
 
          // export additional methods
          if (DEFAULT) {
            };
            if (FORCED) for (KEY in methods) {
              if (BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME || !(KEY in IterablePrototype)) {
-               redefine(IterablePrototype, KEY, methods[KEY]);
+               redefine$d(IterablePrototype, KEY, methods[KEY]);
              }
-           } else _export({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME }, methods);
+           } else $$1c({ target: NAME, proto: true, forced: BUGGY_SAFARI_ITERATORS || INCORRECT_VALUES_NAME }, methods);
          }
 
+         // define iterator
+         if (IterablePrototype[ITERATOR$9] !== defaultIterator) {
+           redefine$d(IterablePrototype, ITERATOR$9, defaultIterator, { name: DEFAULT });
+         }
+         Iterators$3[NAME] = defaultIterator;
+
          return methods;
        };
 
+       var toIndexedObject$8 = toIndexedObject$d;
+       var addToUnscopables$5 = addToUnscopables$6;
+       var Iterators$2 = iterators;
+       var InternalStateModule$8 = internalState;
+       var defineProperty$a = objectDefineProperty.f;
+       var defineIterator$2 = defineIterator$3;
+       var DESCRIPTORS$i = descriptors;
+
        var ARRAY_ITERATOR = 'Array Iterator';
-       var setInternalState$7 = internalState.set;
-       var getInternalState$5 = internalState.getterFor(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
        // https://tc39.es/ecma262/#sec-array.prototype-@@iterator
        // `CreateArrayIterator` internal method
        // https://tc39.es/ecma262/#sec-createarrayiterator
-       var es_array_iterator = defineIterator(Array, 'Array', function (iterated, kind) {
-         setInternalState$7(this, {
+       var es_array_iterator = defineIterator$2(Array, 'Array', function (iterated, kind) {
+         setInternalState$8(this, {
            type: ARRAY_ITERATOR,
-           target: toIndexedObject(iterated), // target
+           target: toIndexedObject$8(iterated), // target
            index: 0,                          // next index
            kind: kind                         // kind
          });
        // `%ArrayIteratorPrototype%.next` method
        // https://tc39.es/ecma262/#sec-%arrayiteratorprototype%.next
        }, function () {
-         var state = getInternalState$5(this);
+         var state = getInternalState$6(this);
          var target = state.target;
          var kind = state.kind;
          var index = state.index++;
        // argumentsList[@@iterator] is %ArrayProto_values%
        // https://tc39.es/ecma262/#sec-createunmappedargumentsobject
        // https://tc39.es/ecma262/#sec-createmappedargumentsobject
-       iterators.Arguments = iterators.Array;
+       var values = Iterators$2.Arguments = Iterators$2.Array;
 
        // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables('keys');
-       addToUnscopables('values');
-       addToUnscopables('entries');
+       addToUnscopables$5('keys');
+       addToUnscopables$5('values');
+       addToUnscopables$5('entries');
+
+       // V8 ~ Chrome 45- bug
+       if (DESCRIPTORS$i && values.name !== 'values') try {
+         defineProperty$a(values, 'name', { value: 'values' });
+       } catch (error) { /* empty */ }
 
-       var TO_STRING_TAG$3 = wellKnownSymbol('toStringTag');
+       var wellKnownSymbol$m = wellKnownSymbol$t;
+
+       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$2 = wellKnownSymbol('toStringTag');
+       var global$_ = global$1o;
+       var TO_STRING_TAG_SUPPORT$2 = toStringTagSupport;
+       var isCallable$d = isCallable$r;
+       var classofRaw = classofRaw$1;
+       var wellKnownSymbol$l = wellKnownSymbol$t;
+
+       var TO_STRING_TAG$2 = wellKnownSymbol$l('toStringTag');
+       var Object$1 = global$_.Object;
+
        // ES3 wrong here
        var CORRECT_ARGUMENTS = classofRaw(function () { return arguments; }()) == 'Arguments';
 
        };
 
        // getting tag from ES6+ `Object.prototype.toString`
-       var classof = toStringTagSupport ? classofRaw : function (it) {
+       var classof$d = 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
+           : typeof (tag = tryGet(O = Object$1(it), TO_STRING_TAG$2)) == 'string' ? tag
            // builtinTag case
            : CORRECT_ARGUMENTS ? classofRaw(O)
            // ES3 arguments fallback
-           : (result = classofRaw(O)) == 'Object' && typeof O.callee == 'function' ? 'Arguments' : result;
+           : (result = classofRaw(O)) == 'Object' && isCallable$d(O.callee) ? 'Arguments' : result;
        };
 
+       var TO_STRING_TAG_SUPPORT$1 = toStringTagSupport;
+       var classof$c = classof$d;
+
        // `Object.prototype.toString` method implementation
        // https://tc39.es/ecma262/#sec-object.prototype.tostring
-       var objectToString$1 = toStringTagSupport ? {}.toString : function toString() {
-         return '[object ' + classof(this) + ']';
+       var objectToString$1 = TO_STRING_TAG_SUPPORT$1 ? {}.toString : function toString() {
+         return '[object ' + classof$c(this) + ']';
        };
 
+       var TO_STRING_TAG_SUPPORT = toStringTagSupport;
+       var redefine$c = redefine$h.exports;
+       var toString$l = objectToString$1;
+
        // `Object.prototype.toString` method
        // https://tc39.es/ecma262/#sec-object.prototype.tostring
-       if (!toStringTagSupport) {
-         redefine(Object.prototype, 'toString', objectToString$1, { unsafe: true });
+       if (!TO_STRING_TAG_SUPPORT) {
+         redefine$c(Object.prototype, 'toString', toString$l, { unsafe: true });
        }
 
-       // `String.prototype.{ codePointAt, at }` methods implementation
+       var global$Z = global$1o;
+       var classof$b = classof$d;
+
+       var String$3 = global$Z.String;
+
+       var toString$k = function (argument) {
+         if (classof$b(argument) === 'Symbol') throw TypeError('Cannot convert a Symbol value to a string');
+         return String$3(argument);
+       };
+
+       var uncurryThis$L = functionUncurryThis;
+       var toIntegerOrInfinity$8 = toIntegerOrInfinity$b;
+       var toString$j = toString$k;
+       var requireObjectCoercible$b = requireObjectCoercible$e;
+
+       var charAt$8 = uncurryThis$L(''.charAt);
+       var charCodeAt$2 = uncurryThis$L(''.charCodeAt);
+       var stringSlice$b = uncurryThis$L(''.slice);
+
        var createMethod$5 = function (CONVERT_TO_STRING) {
          return function ($this, pos) {
-           var S = String(requireObjectCoercible($this));
-           var position = toInteger(pos);
+           var S = toString$j(requireObjectCoercible$b($this));
+           var position = toIntegerOrInfinity$8(pos);
            var size = S.length;
            var first, second;
            if (position < 0 || position >= size) return CONVERT_TO_STRING ? '' : undefined;
-           first = S.charCodeAt(position);
+           first = charCodeAt$2(S, 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;
+             || (second = charCodeAt$2(S, position + 1)) < 0xDC00 || second > 0xDFFF
+               ? CONVERT_TO_STRING
+                 ? charAt$8(S, position)
+                 : first
+               : CONVERT_TO_STRING
+                 ? stringSlice$b(S, position, position + 2)
+                 : (first - 0xD800 << 10) + (second - 0xDC00) + 0x10000;
          };
        };
 
          charAt: createMethod$5(true)
        };
 
-       var charAt$1 = stringMultibyte.charAt;
-
-
+       var charAt$7 = stringMultibyte.charAt;
+       var toString$i = toString$k;
+       var InternalStateModule$7 = internalState;
+       var defineIterator$1 = defineIterator$3;
 
        var STRING_ITERATOR = 'String Iterator';
-       var setInternalState$6 = internalState.set;
-       var getInternalState$4 = internalState.getterFor(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(String, 'String', function (iterated) {
-         setInternalState$6(this, {
+       defineIterator$1(String, 'String', function (iterated) {
+         setInternalState$7(this, {
            type: STRING_ITERATOR,
-           string: String(iterated),
+           string: toString$i(iterated),
            index: 0
          });
        // `%StringIteratorPrototype%.next` method
        // https://tc39.es/ecma262/#sec-%stringiteratorprototype%.next
        }, function next() {
-         var state = getInternalState$4(this);
+         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);
+         point = charAt$7(string, index);
          state.index += point.length;
          return { value: point, done: false };
        });
          TouchList: 0
        };
 
-       var ITERATOR$6 = wellKnownSymbol('iterator');
-       var TO_STRING_TAG$1 = wellKnownSymbol('toStringTag');
-       var ArrayValues = es_array_iterator.values;
+       // in old WebKit versions, `element.classList` is not an instance of global `DOMTokenList`
+       var documentCreateElement = documentCreateElement$2;
+
+       var classList$1 = documentCreateElement('span').classList;
+       var DOMTokenListPrototype$2 = classList$1 && classList$1.constructor && classList$1.constructor.prototype;
+
+       var domTokenListPrototype = DOMTokenListPrototype$2 === Object.prototype ? undefined : DOMTokenListPrototype$2;
 
-       for (var COLLECTION_NAME$1 in domIterables) {
-         var Collection$1 = global$2[COLLECTION_NAME$1];
-         var CollectionPrototype$1 = Collection$1 && Collection$1.prototype;
-         if (CollectionPrototype$1) {
+       var global$Y = global$1o;
+       var DOMIterables$1 = domIterables;
+       var DOMTokenListPrototype$1 = domTokenListPrototype;
+       var ArrayIteratorMethods = es_array_iterator;
+       var createNonEnumerableProperty$6 = createNonEnumerableProperty$b;
+       var wellKnownSymbol$k = wellKnownSymbol$t;
+
+       var ITERATOR$8 = wellKnownSymbol$k('iterator');
+       var TO_STRING_TAG$1 = wellKnownSymbol$k('toStringTag');
+       var ArrayValues = ArrayIteratorMethods.values;
+
+       var handlePrototype$1 = function (CollectionPrototype, COLLECTION_NAME) {
+         if (CollectionPrototype) {
            // some Chrome versions have non-configurable methods on DOMTokenList
-           if (CollectionPrototype$1[ITERATOR$6] !== ArrayValues) try {
-             createNonEnumerableProperty(CollectionPrototype$1, ITERATOR$6, ArrayValues);
+           if (CollectionPrototype[ITERATOR$8] !== ArrayValues) try {
+             createNonEnumerableProperty$6(CollectionPrototype, ITERATOR$8, ArrayValues);
            } catch (error) {
-             CollectionPrototype$1[ITERATOR$6] = ArrayValues;
+             CollectionPrototype[ITERATOR$8] = ArrayValues;
            }
-           if (!CollectionPrototype$1[TO_STRING_TAG$1]) {
-             createNonEnumerableProperty(CollectionPrototype$1, TO_STRING_TAG$1, COLLECTION_NAME$1);
+           if (!CollectionPrototype[TO_STRING_TAG$1]) {
+             createNonEnumerableProperty$6(CollectionPrototype, TO_STRING_TAG$1, COLLECTION_NAME);
            }
-           if (domIterables[COLLECTION_NAME$1]) for (var METHOD_NAME in es_array_iterator) {
+           if (DOMIterables$1[COLLECTION_NAME]) for (var METHOD_NAME in ArrayIteratorMethods) {
              // 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]);
+             if (CollectionPrototype[METHOD_NAME] !== ArrayIteratorMethods[METHOD_NAME]) try {
+               createNonEnumerableProperty$6(CollectionPrototype, METHOD_NAME, ArrayIteratorMethods[METHOD_NAME]);
              } catch (error) {
-               CollectionPrototype$1[METHOD_NAME] = es_array_iterator[METHOD_NAME];
+               CollectionPrototype[METHOD_NAME] = ArrayIteratorMethods[METHOD_NAME];
              }
            }
          }
+       };
+
+       for (var COLLECTION_NAME$1 in DOMIterables$1) {
+         handlePrototype$1(global$Y[COLLECTION_NAME$1] && global$Y[COLLECTION_NAME$1].prototype, COLLECTION_NAME$1);
        }
 
+       handlePrototype$1(DOMTokenListPrototype$1, 'DOMTokenList');
+
+       var NATIVE_BIND$2 = functionBindNative;
+
+       var FunctionPrototype$1 = Function.prototype;
+       var apply$9 = FunctionPrototype$1.apply;
+       var call$k = FunctionPrototype$1.call;
+
+       // eslint-disable-next-line es/no-reflect -- safe
+       var functionApply = typeof Reflect == 'object' && Reflect.apply || (NATIVE_BIND$2 ? call$k.bind(apply$9) : function () {
+         return call$k.apply(apply$9, arguments);
+       });
+
+       var classof$a = classofRaw$1;
+
        // `IsArray` abstract operation
        // https://tc39.es/ecma262/#sec-isarray
        // eslint-disable-next-line es/no-array-isarray -- safe
-       var isArray = Array.isArray || function isArray(arg) {
-         return classofRaw(arg) == 'Array';
+       var isArray$8 = Array.isArray || function isArray(argument) {
+         return classof$a(argument) == 'Array';
+       };
+
+       var objectGetOwnPropertyNamesExternal = {};
+
+       var toPropertyKey$2 = toPropertyKey$5;
+       var definePropertyModule$3 = objectDefineProperty;
+       var createPropertyDescriptor$3 = createPropertyDescriptor$7;
+
+       var createProperty$5 = function (object, key, value) {
+         var propertyKey = toPropertyKey$2(key);
+         if (propertyKey in object) definePropertyModule$3.f(object, propertyKey, createPropertyDescriptor$3(0, value));
+         else object[propertyKey] = value;
+       };
+
+       var global$X = global$1o;
+       var toAbsoluteIndex$7 = toAbsoluteIndex$9;
+       var lengthOfArrayLike$g = lengthOfArrayLike$i;
+       var createProperty$4 = createProperty$5;
+
+       var Array$7 = global$X.Array;
+       var max$4 = Math.max;
+
+       var arraySliceSimple = function (O, start, end) {
+         var length = lengthOfArrayLike$g(O);
+         var k = toAbsoluteIndex$7(start, length);
+         var fin = toAbsoluteIndex$7(end === undefined ? length : end, length);
+         var result = Array$7(max$4(fin - k, 0));
+         for (var n = 0; k < fin; k++, n++) createProperty$4(result, n, O[k]);
+         result.length = n;
+         return result;
        };
 
        /* eslint-disable es/no-object-getownpropertynames -- safe */
 
+       var classof$9 = classofRaw$1;
+       var toIndexedObject$7 = toIndexedObject$d;
        var $getOwnPropertyNames$1 = objectGetOwnPropertyNames.f;
-
-       var toString = {}.toString;
+       var arraySlice$c = arraySliceSimple;
 
        var windowNames = typeof window == 'object' && window && Object.getOwnPropertyNames
          ? Object.getOwnPropertyNames(window) : [];
          try {
            return $getOwnPropertyNames$1(it);
          } catch (error) {
-           return windowNames.slice();
+           return arraySlice$c(windowNames);
          }
        };
 
        // fallback for IE11 buggy Object.getOwnPropertyNames with iframe and window
-       var f$1 = function getOwnPropertyNames(it) {
-         return windowNames && toString.call(it) == '[object Window]'
+       objectGetOwnPropertyNamesExternal.f = function getOwnPropertyNames(it) {
+         return windowNames && classof$9(it) == 'Window'
            ? getWindowNames(it)
-           : $getOwnPropertyNames$1(toIndexedObject(it));
+           : $getOwnPropertyNames$1(toIndexedObject$7(it));
        };
 
-       var objectGetOwnPropertyNamesExternal = {
-               f: f$1
-       };
+       var uncurryThis$K = functionUncurryThis;
 
-       var aFunction = function (it) {
-         if (typeof it != 'function') {
-           throw TypeError(String(it) + ' is not a function');
-         } return it;
-       };
+       var arraySlice$b = uncurryThis$K([].slice);
+
+       var uncurryThis$J = functionUncurryThis;
+       var aCallable$8 = aCallable$a;
+       var NATIVE_BIND$1 = functionBindNative;
+
+       var bind$f = uncurryThis$J(uncurryThis$J.bind);
 
        // optional / simple context binding
-       var functionBindContext = function (fn, that, length) {
-         aFunction(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 */) {
+       var functionBindContext = function (fn, that) {
+         aCallable$8(fn);
+         return that === undefined ? fn : NATIVE_BIND$1 ? bind$f(fn, that) : function (/* ...args */) {
            return fn.apply(that, arguments);
          };
        };
 
-       var SPECIES$6 = wellKnownSymbol('species');
+       var uncurryThis$I = functionUncurryThis;
+       var fails$L = fails$V;
+       var isCallable$c = isCallable$r;
+       var classof$8 = classof$d;
+       var getBuiltIn$6 = getBuiltIn$b;
+       var inspectSource$1 = inspectSource$4;
+
+       var noop$2 = function () { /* empty */ };
+       var empty$1 = [];
+       var construct$1 = getBuiltIn$6('Reflect', 'construct');
+       var constructorRegExp = /^\s*(?:class|function)\b/;
+       var exec$6 = uncurryThis$I(constructorRegExp.exec);
+       var INCORRECT_TO_STRING = !constructorRegExp.exec(noop$2);
+
+       var isConstructorModern = function isConstructor(argument) {
+         if (!isCallable$c(argument)) return false;
+         try {
+           construct$1(noop$2, empty$1, argument);
+           return true;
+         } catch (error) {
+           return false;
+         }
+       };
 
-       // `ArraySpeciesCreate` abstract operation
+       var isConstructorLegacy = function isConstructor(argument) {
+         if (!isCallable$c(argument)) return false;
+         switch (classof$8(argument)) {
+           case 'AsyncFunction':
+           case 'GeneratorFunction':
+           case 'AsyncGeneratorFunction': return false;
+         }
+         try {
+           // we can't check .prototype since constructors produced by .bind haven't it
+           // `Function#toString` throws on some built-it function in some legacy engines
+           // (for example, `DOMQuad` and similar in FF41-)
+           return INCORRECT_TO_STRING || !!exec$6(constructorRegExp, inspectSource$1(argument));
+         } catch (error) {
+           return true;
+         }
+       };
+
+       isConstructorLegacy.sham = true;
+
+       // `IsConstructor` abstract operation
+       // https://tc39.es/ecma262/#sec-isconstructor
+       var isConstructor$4 = !construct$1 || fails$L(function () {
+         var called;
+         return isConstructorModern(isConstructorModern.call)
+           || !isConstructorModern(Object)
+           || !isConstructorModern(function () { called = true; })
+           || called;
+       }) ? isConstructorLegacy : isConstructorModern;
+
+       var global$W = global$1o;
+       var isArray$7 = isArray$8;
+       var isConstructor$3 = isConstructor$4;
+       var isObject$m = isObject$s;
+       var wellKnownSymbol$j = wellKnownSymbol$t;
+
+       var SPECIES$6 = wellKnownSymbol$j('species');
+       var Array$6 = global$W.Array;
+
+       // a part of `ArraySpeciesCreate` abstract operation
        // https://tc39.es/ecma262/#sec-arrayspeciescreate
-       var arraySpeciesCreate = function (originalArray, length) {
+       var arraySpeciesConstructor$1 = function (originalArray) {
          var C;
-         if (isArray(originalArray)) {
+         if (isArray$7(originalArray)) {
            C = originalArray.constructor;
            // cross-realm fallback
-           if (typeof C == 'function' && (C === Array || isArray(C.prototype))) C = undefined;
-           else if (isObject$4(C)) {
+           if (isConstructor$3(C) && (C === Array$6 || isArray$7(C.prototype))) C = undefined;
+           else if (isObject$m(C)) {
              C = C[SPECIES$6];
              if (C === null) C = undefined;
            }
-         } return new (C === undefined ? Array : C)(length === 0 ? 0 : length);
+         } return C === undefined ? Array$6 : C;
+       };
+
+       var arraySpeciesConstructor = arraySpeciesConstructor$1;
+
+       // `ArraySpeciesCreate` abstract operation
+       // https://tc39.es/ecma262/#sec-arrayspeciescreate
+       var arraySpeciesCreate$4 = function (originalArray, length) {
+         return new (arraySpeciesConstructor(originalArray))(length === 0 ? 0 : length);
        };
 
-       var push = [].push;
+       var bind$e = functionBindContext;
+       var uncurryThis$H = functionUncurryThis;
+       var IndexedObject$3 = indexedObject;
+       var toObject$f = toObject$i;
+       var lengthOfArrayLike$f = lengthOfArrayLike$i;
+       var arraySpeciesCreate$3 = arraySpeciesCreate$4;
+
+       var push$9 = uncurryThis$H([].push);
 
-       // `Array.prototype.{ forEach, map, filter, some, every, find, findIndex, filterOut }` methods implementation
+       // `Array.prototype.{ forEach, map, filter, some, every, find, findIndex, filterReject }` methods implementation
        var createMethod$4 = function (TYPE) {
          var IS_MAP = TYPE == 1;
          var IS_FILTER = TYPE == 2;
          var IS_SOME = TYPE == 3;
          var IS_EVERY = TYPE == 4;
          var IS_FIND_INDEX = TYPE == 6;
-         var IS_FILTER_OUT = TYPE == 7;
+         var IS_FILTER_REJECT = TYPE == 7;
          var NO_HOLES = TYPE == 5 || IS_FIND_INDEX;
          return function ($this, callbackfn, that, specificCreate) {
-           var O = toObject($this);
-           var self = indexedObject(O);
-           var boundFunction = functionBindContext(callbackfn, that, 3);
-           var length = toLength(self.length);
+           var O = toObject$f($this);
+           var self = IndexedObject$3(O);
+           var boundFunction = bind$e(callbackfn, that);
+           var length = lengthOfArrayLike$f(self);
            var index = 0;
-           var create = specificCreate || arraySpeciesCreate;
-           var target = IS_MAP ? create($this, length) : IS_FILTER || IS_FILTER_OUT ? create($this, 0) : undefined;
+           var create = specificCreate || arraySpeciesCreate$3;
+           var target = IS_MAP ? create($this, length) : IS_FILTER || IS_FILTER_REJECT ? create($this, 0) : undefined;
            var value, result;
            for (;length > index; index++) if (NO_HOLES || index in self) {
              value = self[index];
                  case 3: return true;              // some
                  case 5: return value;             // find
                  case 6: return index;             // findIndex
-                 case 2: push.call(target, value); // filter
+                 case 2: push$9(target, value);      // filter
                } else switch (TYPE) {
                  case 4: return false;             // every
-                 case 7: push.call(target, value); // filterOut
+                 case 7: push$9(target, value);      // filterReject
                }
              }
            }
          // `Array.prototype.findIndex` method
          // https://tc39.es/ecma262/#sec-array.prototype.findIndex
          findIndex: createMethod$4(6),
-         // `Array.prototype.filterOut` method
+         // `Array.prototype.filterReject` method
          // https://github.com/tc39/proposal-array-filtering
-         filterOut: createMethod$4(7)
+         filterReject: createMethod$4(7)
        };
 
+       var $$1b = _export;
+       var global$V = global$1o;
+       var getBuiltIn$5 = getBuiltIn$b;
+       var apply$8 = functionApply;
+       var call$j = functionCall;
+       var uncurryThis$G = functionUncurryThis;
+       var DESCRIPTORS$h = descriptors;
+       var NATIVE_SYMBOL$1 = nativeSymbol;
+       var fails$K = fails$V;
+       var hasOwn$b = hasOwnProperty_1;
+       var isArray$6 = isArray$8;
+       var isCallable$b = isCallable$r;
+       var isObject$l = isObject$s;
+       var isPrototypeOf$8 = objectIsPrototypeOf;
+       var isSymbol$3 = isSymbol$6;
+       var anObject$h = anObject$n;
+       var toObject$e = toObject$i;
+       var toIndexedObject$6 = toIndexedObject$d;
+       var toPropertyKey$1 = toPropertyKey$5;
+       var $toString$3 = toString$k;
+       var createPropertyDescriptor$2 = createPropertyDescriptor$7;
+       var nativeObjectCreate = objectCreate;
+       var objectKeys$2 = objectKeys$4;
+       var getOwnPropertyNamesModule$1 = objectGetOwnPropertyNames;
+       var getOwnPropertyNamesExternal = objectGetOwnPropertyNamesExternal;
+       var getOwnPropertySymbolsModule$1 = objectGetOwnPropertySymbols;
+       var getOwnPropertyDescriptorModule$2 = objectGetOwnPropertyDescriptor;
+       var definePropertyModule$2 = objectDefineProperty;
+       var definePropertiesModule = objectDefineProperties;
+       var propertyIsEnumerableModule$1 = objectPropertyIsEnumerable;
+       var arraySlice$a = arraySlice$b;
+       var redefine$b = redefine$h.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$t;
+       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('toPrimitive');
-       var setInternalState$5 = internalState.set;
-       var getInternalState$3 = internalState.getterFor(SYMBOL);
-       var ObjectPrototype$2 = Object[PROTOTYPE$1];
-       var $Symbol = global$2.Symbol;
-       var $stringify = getBuiltIn('JSON', 'stringify');
-       var nativeGetOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
-       var nativeDefineProperty = objectDefineProperty.f;
-       var nativeGetOwnPropertyNames = objectGetOwnPropertyNamesExternal.f;
-       var nativePropertyIsEnumerable = 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 = shared('wks');
-       var QObject = global$2.QObject;
+       var TO_PRIMITIVE = wellKnownSymbol$i('toPrimitive');
+
+       var setInternalState$6 = InternalStateModule$6.set;
+       var getInternalState$4 = InternalStateModule$6.getterFor(SYMBOL);
+
+       var ObjectPrototype$3 = Object[PROTOTYPE$1];
+       var $Symbol = global$V.Symbol;
+       var SymbolPrototype$1 = $Symbol && $Symbol[PROTOTYPE$1];
+       var TypeError$h = global$V.TypeError;
+       var QObject = global$V.QObject;
+       var $stringify = getBuiltIn$5('JSON', 'stringify');
+       var nativeGetOwnPropertyDescriptor$2 = getOwnPropertyDescriptorModule$2.f;
+       var nativeDefineProperty$1 = definePropertyModule$2.f;
+       var nativeGetOwnPropertyNames = getOwnPropertyNamesExternal.f;
+       var nativePropertyIsEnumerable = propertyIsEnumerableModule$1.f;
+       var push$8 = uncurryThis$G([].push);
+
+       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');
+
        // 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 && fails(function () {
-         return objectCreate(nativeDefineProperty({}, 'a', {
-           get: function () { return nativeDefineProperty(this, 'a', { value: 7 }).a; }
+       var setSymbolDescriptor = DESCRIPTORS$h && fails$K(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$1(ObjectPrototype$2, P);
-         if (ObjectPrototypeDescriptor) delete ObjectPrototype$2[P];
-         nativeDefineProperty(O, P, Attributes);
-         if (ObjectPrototypeDescriptor && O !== ObjectPrototype$2) {
-           nativeDefineProperty(ObjectPrototype$2, P, ObjectPrototypeDescriptor);
+         var ObjectPrototypeDescriptor = nativeGetOwnPropertyDescriptor$2(ObjectPrototype$3, P);
+         if (ObjectPrototypeDescriptor) delete ObjectPrototype$3[P];
+         nativeDefineProperty$1(O, P, Attributes);
+         if (ObjectPrototypeDescriptor && O !== ObjectPrototype$3) {
+           nativeDefineProperty$1(ObjectPrototype$3, P, ObjectPrototypeDescriptor);
          }
-       } : nativeDefineProperty;
+       } : nativeDefineProperty$1;
 
        var wrap$2 = function (tag, description) {
-         var symbol = AllSymbols[tag] = objectCreate($Symbol[PROTOTYPE$1]);
-         setInternalState$5(symbol, {
+         var symbol = AllSymbols[tag] = nativeObjectCreate(SymbolPrototype$1);
+         setInternalState$6(symbol, {
            type: SYMBOL,
            tag: tag,
            description: description
          });
-         if (!descriptors) symbol.description = description;
+         if (!DESCRIPTORS$h) symbol.description = description;
          return symbol;
        };
 
-       var isSymbol$1 = useSymbolAsUid ? 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(O);
-         var key = toPrimitive(P, true);
-         anObject(Attributes);
-         if (has$1(AllSymbols, key)) {
+         if (O === ObjectPrototype$3) $defineProperty(ObjectPrototypeSymbols, P, Attributes);
+         anObject$h(O);
+         var key = toPropertyKey$1(P);
+         anObject$h(Attributes);
+         if (hasOwn$b(AllSymbols, key)) {
            if (!Attributes.enumerable) {
-             if (!has$1(O, HIDDEN)) nativeDefineProperty(O, HIDDEN, createPropertyDescriptor(1, {}));
+             if (!hasOwn$b(O, HIDDEN)) nativeDefineProperty$1(O, HIDDEN, createPropertyDescriptor$2(1, {}));
              O[HIDDEN][key] = true;
            } else {
-             if (has$1(O, HIDDEN) && O[HIDDEN][key]) O[HIDDEN][key] = false;
-             Attributes = objectCreate(Attributes, { enumerable: createPropertyDescriptor(0, false) });
+             if (hasOwn$b(O, HIDDEN) && O[HIDDEN][key]) O[HIDDEN][key] = false;
+             Attributes = nativeObjectCreate(Attributes, { enumerable: createPropertyDescriptor$2(0, false) });
            } return setSymbolDescriptor(O, key, Attributes);
-         } return nativeDefineProperty(O, key, Attributes);
+         } return nativeDefineProperty$1(O, key, Attributes);
        };
 
        var $defineProperties = function defineProperties(O, Properties) {
-         anObject(O);
-         var properties = toIndexedObject(Properties);
-         var keys = objectKeys(properties).concat($getOwnPropertySymbols(properties));
+         anObject$h(O);
+         var properties = toIndexedObject$6(Properties);
+         var keys = objectKeys$2(properties).concat($getOwnPropertySymbols(properties));
          $forEach$2(keys, function (key) {
-           if (!descriptors || $propertyIsEnumerable.call(properties, key)) $defineProperty(O, key, properties[key]);
+           if (!DESCRIPTORS$h || call$j($propertyIsEnumerable$1, properties, key)) $defineProperty(O, key, properties[key]);
          });
          return O;
        };
 
        var $create = function create(O, Properties) {
-         return Properties === undefined ? objectCreate(O) : $defineProperties(objectCreate(O), Properties);
+         return Properties === undefined ? nativeObjectCreate(O) : $defineProperties(nativeObjectCreate(O), Properties);
        };
 
-       var $propertyIsEnumerable = function propertyIsEnumerable(V) {
-         var P = toPrimitive(V, true);
-         var enumerable = nativePropertyIsEnumerable.call(this, P);
-         if (this === ObjectPrototype$2 && has$1(AllSymbols, P) && !has$1(ObjectPrototypeSymbols, P)) return false;
-         return enumerable || !has$1(this, P) || !has$1(AllSymbols, P) || has$1(this, HIDDEN) && this[HIDDEN][P] ? enumerable : true;
+       var $propertyIsEnumerable$1 = function propertyIsEnumerable(V) {
+         var P = toPropertyKey$1(V);
+         var enumerable = call$j(nativePropertyIsEnumerable, this, P);
+         if (this === ObjectPrototype$3 && hasOwn$b(AllSymbols, P) && !hasOwn$b(ObjectPrototypeSymbols, P)) return false;
+         return enumerable || !hasOwn$b(this, P) || !hasOwn$b(AllSymbols, P) || hasOwn$b(this, HIDDEN) && this[HIDDEN][P]
+           ? enumerable : true;
        };
 
        var $getOwnPropertyDescriptor = function getOwnPropertyDescriptor(O, P) {
-         var it = toIndexedObject(O);
-         var key = toPrimitive(P, true);
-         if (it === ObjectPrototype$2 && has$1(AllSymbols, key) && !has$1(ObjectPrototypeSymbols, key)) return;
-         var descriptor = nativeGetOwnPropertyDescriptor$1(it, key);
-         if (descriptor && has$1(AllSymbols, key) && !(has$1(it, HIDDEN) && it[HIDDEN][key])) {
+         var it = toIndexedObject$6(O);
+         var key = toPropertyKey$1(P);
+         if (it === ObjectPrototype$3 && hasOwn$b(AllSymbols, key) && !hasOwn$b(ObjectPrototypeSymbols, key)) return;
+         var descriptor = nativeGetOwnPropertyDescriptor$2(it, key);
+         if (descriptor && hasOwn$b(AllSymbols, key) && !(hasOwn$b(it, HIDDEN) && it[HIDDEN][key])) {
            descriptor.enumerable = true;
          }
          return descriptor;
        };
 
        var $getOwnPropertyNames = function getOwnPropertyNames(O) {
-         var names = nativeGetOwnPropertyNames(toIndexedObject(O));
+         var names = nativeGetOwnPropertyNames(toIndexedObject$6(O));
          var result = [];
          $forEach$2(names, function (key) {
-           if (!has$1(AllSymbols, key) && !has$1(hiddenKeys$1, key)) result.push(key);
+           if (!hasOwn$b(AllSymbols, key) && !hasOwn$b(hiddenKeys$1, key)) push$8(result, key);
          });
          return result;
        };
 
        var $getOwnPropertySymbols = function getOwnPropertySymbols(O) {
-         var IS_OBJECT_PROTOTYPE = O === ObjectPrototype$2;
-         var names = nativeGetOwnPropertyNames(IS_OBJECT_PROTOTYPE ? ObjectPrototypeSymbols : toIndexedObject(O));
+         var IS_OBJECT_PROTOTYPE = O === ObjectPrototype$3;
+         var names = nativeGetOwnPropertyNames(IS_OBJECT_PROTOTYPE ? ObjectPrototypeSymbols : toIndexedObject$6(O));
          var result = [];
          $forEach$2(names, function (key) {
-           if (has$1(AllSymbols, key) && (!IS_OBJECT_PROTOTYPE || has$1(ObjectPrototype$2, key))) {
-             result.push(AllSymbols[key]);
+           if (hasOwn$b(AllSymbols, key) && (!IS_OBJECT_PROTOTYPE || hasOwn$b(ObjectPrototype$3, key))) {
+             push$8(result, AllSymbols[key]);
            }
          });
          return result;
 
        // `Symbol` constructor
        // https://tc39.es/ecma262/#sec-symbol-constructor
-       if (!nativeSymbol) {
+       if (!NATIVE_SYMBOL$1) {
          $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);
+           if (isPrototypeOf$8(SymbolPrototype$1, this)) throw TypeError$h('Symbol is not a constructor');
+           var description = !arguments.length || arguments[0] === undefined ? undefined : $toString$3(arguments[0]);
+           var tag = uid$2(description);
            var setter = function (value) {
-             if (this === ObjectPrototype$2) setter.call(ObjectPrototypeSymbols, value);
-             if (has$1(this, HIDDEN) && has$1(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
-             setSymbolDescriptor(this, tag, createPropertyDescriptor(1, value));
+             if (this === ObjectPrototype$3) call$j(setter, ObjectPrototypeSymbols, value);
+             if (hasOwn$b(this, HIDDEN) && hasOwn$b(this[HIDDEN], tag)) this[HIDDEN][tag] = false;
+             setSymbolDescriptor(this, tag, createPropertyDescriptor$2(1, value));
            };
-           if (descriptors && USE_SETTER) setSymbolDescriptor(ObjectPrototype$2, tag, { configurable: true, set: setter });
+           if (DESCRIPTORS$h && USE_SETTER) setSymbolDescriptor(ObjectPrototype$3, tag, { configurable: true, set: setter });
            return wrap$2(tag, description);
          };
 
-         redefine($Symbol[PROTOTYPE$1], 'toString', function toString() {
-           return getInternalState$3(this).tag;
+         SymbolPrototype$1 = $Symbol[PROTOTYPE$1];
+
+         redefine$b(SymbolPrototype$1, 'toString', function toString() {
+           return getInternalState$4(this).tag;
          });
 
-         redefine($Symbol, 'withoutSetter', function (description) {
-           return wrap$2(uid(description), description);
+         redefine$b($Symbol, 'withoutSetter', function (description) {
+           return wrap$2(uid$2(description), description);
          });
 
-         objectPropertyIsEnumerable.f = $propertyIsEnumerable;
-         objectDefineProperty.f = $defineProperty;
-         objectGetOwnPropertyDescriptor.f = $getOwnPropertyDescriptor;
-         objectGetOwnPropertyNames.f = objectGetOwnPropertyNamesExternal.f = $getOwnPropertyNames;
-         objectGetOwnPropertySymbols.f = $getOwnPropertySymbols;
+         propertyIsEnumerableModule$1.f = $propertyIsEnumerable$1;
+         definePropertyModule$2.f = $defineProperty;
+         definePropertiesModule.f = $defineProperties;
+         getOwnPropertyDescriptorModule$2.f = $getOwnPropertyDescriptor;
+         getOwnPropertyNamesModule$1.f = getOwnPropertyNamesExternal.f = $getOwnPropertyNames;
+         getOwnPropertySymbolsModule$1.f = $getOwnPropertySymbols;
 
-         wellKnownSymbolWrapped.f = function (name) {
-           return wrap$2(wellKnownSymbol(name), name);
+         wrappedWellKnownSymbolModule.f = function (name) {
+           return wrap$2(wellKnownSymbol$i(name), name);
          };
 
-         if (descriptors) {
+         if (DESCRIPTORS$h) {
            // https://github.com/tc39/proposal-Symbol-description
-           nativeDefineProperty($Symbol[PROTOTYPE$1], 'description', {
+           nativeDefineProperty$1(SymbolPrototype$1, 'description', {
              configurable: true,
              get: function description() {
-               return getInternalState$3(this).description;
+               return getInternalState$4(this).description;
              }
            });
            {
-             redefine(ObjectPrototype$2, 'propertyIsEnumerable', $propertyIsEnumerable, { unsafe: true });
+             redefine$b(ObjectPrototype$3, 'propertyIsEnumerable', $propertyIsEnumerable$1, { unsafe: true });
            }
          }
        }
 
-       _export({ global: true, wrap: true, forced: !nativeSymbol, sham: !nativeSymbol }, {
+       $$1b({ global: true, wrap: true, forced: !NATIVE_SYMBOL$1, sham: !NATIVE_SYMBOL$1 }, {
          Symbol: $Symbol
        });
 
-       $forEach$2(objectKeys(WellKnownSymbolsStore), function (name) {
-         defineWellKnownSymbol(name);
+       $forEach$2(objectKeys$2(WellKnownSymbolsStore), function (name) {
+         defineWellKnownSymbol$2(name);
        });
 
-       _export({ target: SYMBOL, stat: true, forced: !nativeSymbol }, {
+       $$1b({ target: SYMBOL, stat: true, forced: !NATIVE_SYMBOL$1 }, {
          // `Symbol.for` method
          // https://tc39.es/ecma262/#sec-symbol.for
          'for': function (key) {
-           var string = String(key);
-           if (has$1(StringToSymbolRegistry, string)) return StringToSymbolRegistry[string];
+           var string = $toString$3(key);
+           if (hasOwn$b(StringToSymbolRegistry, string)) return StringToSymbolRegistry[string];
            var symbol = $Symbol(string);
            StringToSymbolRegistry[string] = symbol;
            SymbolToStringRegistry[symbol] = string;
          // `Symbol.keyFor` method
          // https://tc39.es/ecma262/#sec-symbol.keyfor
          keyFor: function keyFor(sym) {
-           if (!isSymbol$1(sym)) throw TypeError(sym + ' is not a symbol');
-           if (has$1(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];
+           if (!isSymbol$3(sym)) throw TypeError$h(sym + ' is not a symbol');
+           if (hasOwn$b(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];
          },
          useSetter: function () { USE_SETTER = true; },
          useSimple: function () { USE_SETTER = false; }
        });
 
-       _export({ target: 'Object', stat: true, forced: !nativeSymbol, sham: !descriptors }, {
+       $$1b({ target: 'Object', stat: true, forced: !NATIVE_SYMBOL$1, sham: !DESCRIPTORS$h }, {
          // `Object.create` method
          // https://tc39.es/ecma262/#sec-object.create
          create: $create,
          getOwnPropertyDescriptor: $getOwnPropertyDescriptor
        });
 
-       _export({ target: 'Object', stat: true, forced: !nativeSymbol }, {
+       $$1b({ target: 'Object', stat: true, forced: !NATIVE_SYMBOL$1 }, {
          // `Object.getOwnPropertyNames` method
          // https://tc39.es/ecma262/#sec-object.getownpropertynames
          getOwnPropertyNames: $getOwnPropertyNames,
 
        // 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); }) }, {
+       $$1b({ target: 'Object', stat: true, forced: fails$K(function () { getOwnPropertySymbolsModule$1.f(1); }) }, {
          getOwnPropertySymbols: function getOwnPropertySymbols(it) {
-           return objectGetOwnPropertySymbols.f(toObject(it));
+           return getOwnPropertySymbolsModule$1.f(toObject$e(it));
          }
        });
 
        // `JSON.stringify` method behavior with symbols
        // https://tc39.es/ecma262/#sec-json.stringify
        if ($stringify) {
-         var FORCED_JSON_STRINGIFY = !nativeSymbol || fails(function () {
+         var FORCED_JSON_STRINGIFY = !NATIVE_SYMBOL$1 || fails$K(function () {
            var symbol = $Symbol();
            // MS Edge converts symbol values to JSON as {}
            return $stringify([symbol]) != '[null]'
              || $stringify(Object(symbol)) != '{}';
          });
 
-         _export({ target: 'JSON', stat: true, forced: FORCED_JSON_STRINGIFY }, {
+         $$1b({ 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;
-             if (!isObject$4(replacer) && it === undefined || isSymbol$1(it)) return; // IE8 returns string on undefined
-             if (!isArray(replacer)) replacer = function (key, value) {
-               if (typeof $replacer == 'function') value = $replacer.call(this, key, value);
-               if (!isSymbol$1(value)) return value;
+             var args = arraySlice$a(arguments);
+             var $replacer = replacer;
+             if (!isObject$l(replacer) && it === undefined || isSymbol$3(it)) return; // IE8 returns string on undefined
+             if (!isArray$6(replacer)) replacer = function (key, value) {
+               if (isCallable$b($replacer)) value = call$j($replacer, this, key, value);
+               if (!isSymbol$3(value)) return value;
              };
              args[1] = replacer;
-             return $stringify.apply(null, args);
+             return apply$8($stringify, null, args);
            }
          });
        }
 
        // `Symbol.prototype[@@toPrimitive]` method
        // https://tc39.es/ecma262/#sec-symbol.prototype-@@toprimitive
-       if (!$Symbol[PROTOTYPE$1][TO_PRIMITIVE]) {
-         createNonEnumerableProperty($Symbol[PROTOTYPE$1], TO_PRIMITIVE, $Symbol[PROTOTYPE$1].valueOf);
+       if (!SymbolPrototype$1[TO_PRIMITIVE]) {
+         var valueOf = SymbolPrototype$1.valueOf;
+         // eslint-disable-next-line no-unused-vars -- required for .length
+         redefine$b(SymbolPrototype$1, TO_PRIMITIVE, function (hint) {
+           // TODO: improve hint logic
+           return call$j(valueOf, this);
+         });
        }
        // `Symbol.prototype[@@toStringTag]` property
        // https://tc39.es/ecma262/#sec-symbol.prototype-@@tostringtag
-       setToStringTag($Symbol, SYMBOL);
+       setToStringTag$7($Symbol, SYMBOL);
 
        hiddenKeys$1[HIDDEN] = true;
 
-       var defineProperty$7 = objectDefineProperty.f;
-
+       var $$1a = _export;
+       var DESCRIPTORS$g = descriptors;
+       var global$U = global$1o;
+       var uncurryThis$F = functionUncurryThis;
+       var hasOwn$a = hasOwnProperty_1;
+       var isCallable$a = isCallable$r;
+       var isPrototypeOf$7 = objectIsPrototypeOf;
+       var toString$h = toString$k;
+       var defineProperty$9 = objectDefineProperty.f;
+       var copyConstructorProperties = copyConstructorProperties$2;
 
-       var NativeSymbol = global$2.Symbol;
+       var NativeSymbol = global$U.Symbol;
+       var SymbolPrototype = NativeSymbol && NativeSymbol.prototype;
 
-       if (descriptors && typeof NativeSymbol == 'function' && (!('description' in NativeSymbol.prototype) ||
+       if (DESCRIPTORS$g && isCallable$a(NativeSymbol) && (!('description' in SymbolPrototype) ||
          // Safari 12 bug
          NativeSymbol().description !== undefined
        )) {
          var EmptyStringDescriptionStore = {};
          // wrap Symbol constructor for correct work with undefined description
          var SymbolWrapper = function Symbol() {
-           var description = arguments.length < 1 || arguments[0] === undefined ? undefined : String(arguments[0]);
-           var result = this instanceof SymbolWrapper
+           var description = arguments.length < 1 || arguments[0] === undefined ? undefined : toString$h(arguments[0]);
+           var result = isPrototypeOf$7(SymbolPrototype, this)
              ? new NativeSymbol(description)
              // in Edge 13, String(Symbol(undefined)) === 'Symbol(undefined)'
              : description === undefined ? NativeSymbol() : NativeSymbol(description);
            if (description === '') EmptyStringDescriptionStore[result] = true;
            return result;
          };
+
          copyConstructorProperties(SymbolWrapper, NativeSymbol);
-         var symbolPrototype = SymbolWrapper.prototype = NativeSymbol.prototype;
-         symbolPrototype.constructor = SymbolWrapper;
+         SymbolWrapper.prototype = SymbolPrototype;
+         SymbolPrototype.constructor = SymbolWrapper;
 
-         var symbolToString = symbolPrototype.toString;
-         var native = String(NativeSymbol('test')) == 'Symbol(test)';
+         var NATIVE_SYMBOL = String(NativeSymbol('test')) == 'Symbol(test)';
+         var symbolToString$1 = uncurryThis$F(SymbolPrototype.toString);
+         var symbolValueOf = uncurryThis$F(SymbolPrototype.valueOf);
          var regexp = /^Symbol\((.*)\)[^)]+$/;
-         defineProperty$7(symbolPrototype, 'description', {
+         var replace$8 = uncurryThis$F(''.replace);
+         var stringSlice$a = uncurryThis$F(''.slice);
+
+         defineProperty$9(SymbolPrototype, 'description', {
            configurable: true,
            get: function description() {
-             var symbol = isObject$4(this) ? this.valueOf() : this;
-             var string = symbolToString.call(symbol);
-             if (has$1(EmptyStringDescriptionStore, symbol)) return '';
-             var desc = native ? string.slice(7, -1) : string.replace(regexp, '$1');
+             var symbol = symbolValueOf(this);
+             var string = symbolToString$1(symbol);
+             if (hasOwn$a(EmptyStringDescriptionStore, symbol)) return '';
+             var desc = NATIVE_SYMBOL ? stringSlice$a(string, 7, -1) : replace$8(string, regexp, '$1');
              return desc === '' ? undefined : desc;
            }
          });
 
-         _export({ global: true, forced: true }, {
+         $$1a({ global: true, forced: true }, {
            Symbol: SymbolWrapper
          });
        }
 
        // eslint-disable-next-line es/no-typed-arrays -- safe
-       var arrayBufferNative = typeof ArrayBuffer !== 'undefined' && typeof DataView !== 'undefined';
+       var arrayBufferNative = typeof ArrayBuffer != 'undefined' && typeof DataView != 'undefined';
+
+       var redefine$a = redefine$h.exports;
 
-       var redefineAll = function (target, src, options) {
-         for (var key in src) redefine(target, key, src[key], options);
+       var redefineAll$4 = function (target, src, options) {
+         for (var key in src) redefine$a(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;
+       var global$T = global$1o;
+       var isPrototypeOf$6 = objectIsPrototypeOf;
+
+       var TypeError$g = global$T.TypeError;
+
+       var anInstance$7 = function (it, Prototype) {
+         if (isPrototypeOf$6(Prototype, it)) return it;
+         throw TypeError$g('Incorrect invocation');
        };
 
+       var global$S = global$1o;
+       var toIntegerOrInfinity$7 = toIntegerOrInfinity$b;
+       var toLength$a = toLength$c;
+
+       var RangeError$b = global$S.RangeError;
+
        // `ToIndex` abstract operation
        // https://tc39.es/ecma262/#sec-toindex
-       var toIndex = function (it) {
+       var toIndex$2 = function (it) {
          if (it === undefined) return 0;
-         var number = toInteger(it);
-         var length = toLength(number);
-         if (number !== length) throw RangeError('Wrong length or index');
+         var number = toIntegerOrInfinity$7(it);
+         var length = toLength$a(number);
+         if (number !== length) throw RangeError$b('Wrong length or index');
          return length;
        };
 
        // IEEE754 conversions based on https://github.com/feross/ieee754
+       var global$R = global$1o;
+
+       var Array$5 = global$R.Array;
        var abs$4 = Math.abs;
        var pow$2 = Math.pow;
-       var floor$6 = Math.floor;
+       var floor$7 = Math.floor;
        var log$2 = Math.log;
        var LN2 = Math.LN2;
 
        var pack = function (number, mantissaLength, bytes) {
-         var buffer = new Array(bytes);
+         var buffer = Array$5(bytes);
          var exponentLength = bytes * 8 - mantissaLength - 1;
          var eMax = (1 << exponentLength) - 1;
          var eBias = eMax >> 1;
            mantissa = number != number ? 1 : 0;
            exponent = eMax;
          } else {
-           exponent = floor$6(log$2(number) / LN2);
-           if (number * (c = pow$2(2, -exponent)) < 1) {
+           exponent = floor$7(log$2(number) / LN2);
+           c = pow$2(2, -exponent);
+           if (number * c < 1) {
              exponent--;
              c *= 2;
            }
              exponent = 0;
            }
          }
-         for (; mantissaLength >= 8; buffer[index++] = mantissa & 255, mantissa /= 256, mantissaLength -= 8);
+         while (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);
+         while (exponentLength > 0) {
+           buffer[index++] = exponent & 255;
+           exponent /= 256;
+           exponentLength -= 8;
+         }
          buffer[--index] |= sign * 128;
          return buffer;
        };
          var exponent = sign & 127;
          var mantissa;
          sign >>= 7;
-         for (; nBits > 0; exponent = exponent * 256 + buffer[index], index--, nBits -= 8);
+         while (nBits > 0) {
+           exponent = exponent * 256 + buffer[index--];
+           nBits -= 8;
+         }
          mantissa = exponent & (1 << -nBits) - 1;
          exponent >>= -nBits;
          nBits += mantissaLength;
-         for (; nBits > 0; mantissa = mantissa * 256 + buffer[index], index--, nBits -= 8);
+         while (nBits > 0) {
+           mantissa = mantissa * 256 + buffer[index--];
+           nBits -= 8;
+         }
          if (exponent === 0) {
            exponent = 1 - eBias;
          } else if (exponent === eMax) {
          } return (sign ? -1 : 1) * mantissa * pow$2(2, exponent - mantissaLength);
        };
 
-       var ieee754$1 = {
+       var ieee754$2 = {
          pack: pack,
          unpack: unpack
        };
 
+       var toObject$d = toObject$i;
+       var toAbsoluteIndex$6 = toAbsoluteIndex$9;
+       var lengthOfArrayLike$e = lengthOfArrayLike$i;
+
        // `Array.prototype.fill` method implementation
        // https://tc39.es/ecma262/#sec-array.prototype.fill
-       var arrayFill = function fill(value /* , start = 0, end = @length */) {
-         var O = toObject(this);
-         var length = toLength(O.length);
+       var arrayFill$1 = function fill(value /* , start = 0, end = @length */) {
+         var O = toObject$d(this);
+         var length = lengthOfArrayLike$e(O);
          var argumentsLength = arguments.length;
-         var index = toAbsoluteIndex(argumentsLength > 1 ? arguments[1] : undefined, length);
+         var index = toAbsoluteIndex$6(argumentsLength > 1 ? arguments[1] : undefined, length);
          var end = argumentsLength > 2 ? arguments[2] : undefined;
-         var endPos = end === undefined ? length : toAbsoluteIndex(end, length);
+         var endPos = end === undefined ? length : toAbsoluteIndex$6(end, length);
          while (endPos > index) O[index++] = value;
          return O;
        };
 
-       var getOwnPropertyNames$3 = objectGetOwnPropertyNames.f;
-       var defineProperty$6 = objectDefineProperty.f;
-
-
-
-
-       var getInternalState$2 = internalState.get;
-       var setInternalState$4 = internalState.set;
+       var global$Q = global$1o;
+       var uncurryThis$E = functionUncurryThis;
+       var DESCRIPTORS$f = descriptors;
+       var NATIVE_ARRAY_BUFFER$2 = arrayBufferNative;
+       var FunctionName = functionName;
+       var createNonEnumerableProperty$5 = createNonEnumerableProperty$b;
+       var redefineAll$3 = redefineAll$4;
+       var fails$J = fails$V;
+       var anInstance$6 = anInstance$7;
+       var toIntegerOrInfinity$6 = toIntegerOrInfinity$b;
+       var toLength$9 = toLength$c;
+       var toIndex$1 = toIndex$2;
+       var IEEE754 = ieee754$2;
+       var getPrototypeOf$2 = objectGetPrototypeOf;
+       var setPrototypeOf$5 = objectSetPrototypeOf;
+       var getOwnPropertyNames$4 = objectGetOwnPropertyNames.f;
+       var defineProperty$8 = objectDefineProperty.f;
+       var arrayFill = arrayFill$1;
+       var arraySlice$9 = arraySliceSimple;
+       var setToStringTag$6 = setToStringTag$a;
+       var InternalStateModule$5 = internalState;
+
+       var PROPER_FUNCTION_NAME$2 = FunctionName.PROPER;
+       var CONFIGURABLE_FUNCTION_NAME = FunctionName.CONFIGURABLE;
+       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 = 'Wrong length';
+       var WRONG_LENGTH$1 = 'Wrong length';
        var WRONG_INDEX = 'Wrong index';
-       var NativeArrayBuffer$1 = global$2[ARRAY_BUFFER$1];
+       var NativeArrayBuffer$1 = global$Q[ARRAY_BUFFER$1];
        var $ArrayBuffer = NativeArrayBuffer$1;
-       var $DataView = global$2[DATA_VIEW];
-       var $DataViewPrototype = $DataView && $DataView[PROTOTYPE];
-       var ObjectPrototype$1 = Object.prototype;
-       var RangeError$1 = global$2.RangeError;
-
-       var packIEEE754 = ieee754$1.pack;
-       var unpackIEEE754 = ieee754$1.unpack;
+       var ArrayBufferPrototype$1 = $ArrayBuffer && $ArrayBuffer[PROTOTYPE];
+       var $DataView = global$Q[DATA_VIEW];
+       var DataViewPrototype$1 = $DataView && $DataView[PROTOTYPE];
+       var ObjectPrototype$2 = Object.prototype;
+       var Array$4 = global$Q.Array;
+       var RangeError$a = global$Q.RangeError;
+       var fill$1 = uncurryThis$E(arrayFill);
+       var reverse = uncurryThis$E([].reverse);
+
+       var packIEEE754 = IEEE754.pack;
+       var unpackIEEE754 = IEEE754.unpack;
 
        var packInt8 = function (number) {
          return [number & 0xFF];
          return packIEEE754(number, 52, 8);
        };
 
-       var addGetter = function (Constructor, key) {
-         defineProperty$6(Constructor[PROTOTYPE], key, { get: function () { return getInternalState$2(this)[key]; } });
+       var addGetter$1 = function (Constructor, key) {
+         defineProperty$8(Constructor[PROTOTYPE], key, { get: function () { return getInternalState$3(this)[key]; } });
        };
 
        var get$4 = 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 intIndex = toIndex$1(index);
+         var store = getInternalState$3(view);
+         if (intIndex + count > store.byteLength) throw RangeError$a(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 pack = arraySlice$9(bytes, start, start + count);
+         return isLittleEndian ? pack : reverse(pack);
        };
 
        var set$3 = 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 intIndex = toIndex$1(index);
+         var store = getInternalState$3(view);
+         if (intIndex + count > store.byteLength) throw RangeError$a(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];
        };
 
-       if (!arrayBufferNative) {
+       if (!NATIVE_ARRAY_BUFFER$2) {
          $ArrayBuffer = function ArrayBuffer(length) {
-           anInstance(this, $ArrayBuffer, ARRAY_BUFFER$1);
-           var byteLength = toIndex(length);
-           setInternalState$4(this, {
-             bytes: arrayFill.call(new Array(byteLength), 0),
+           anInstance$6(this, ArrayBufferPrototype$1);
+           var byteLength = toIndex$1(length);
+           setInternalState$5(this, {
+             bytes: fill$1(Array$4(byteLength), 0),
              byteLength: byteLength
            });
-           if (!descriptors) this.byteLength = byteLength;
+           if (!DESCRIPTORS$f) this.byteLength = byteLength;
          };
 
+         ArrayBufferPrototype$1 = $ArrayBuffer[PROTOTYPE];
+
          $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$4(this, {
+           anInstance$6(this, DataViewPrototype$1);
+           anInstance$6(buffer, ArrayBufferPrototype$1);
+           var bufferLength = getInternalState$3(buffer).byteLength;
+           var offset = toIntegerOrInfinity$6(byteOffset);
+           if (offset < 0 || offset > bufferLength) throw RangeError$a('Wrong offset');
+           byteLength = byteLength === undefined ? bufferLength - offset : toLength$9(byteLength);
+           if (offset + byteLength > bufferLength) throw RangeError$a(WRONG_LENGTH$1);
+           setInternalState$5(this, {
              buffer: buffer,
              byteLength: byteLength,
              byteOffset: offset
            });
-           if (!descriptors) {
+           if (!DESCRIPTORS$f) {
              this.buffer = buffer;
              this.byteLength = byteLength;
              this.byteOffset = offset;
            }
          };
 
-         if (descriptors) {
-           addGetter($ArrayBuffer, 'byteLength');
-           addGetter($DataView, 'buffer');
-           addGetter($DataView, 'byteLength');
-           addGetter($DataView, 'byteOffset');
+         DataViewPrototype$1 = $DataView[PROTOTYPE];
+
+         if (DESCRIPTORS$f) {
+           addGetter$1($ArrayBuffer, 'byteLength');
+           addGetter$1($DataView, 'buffer');
+           addGetter$1($DataView, 'byteLength');
+           addGetter$1($DataView, 'byteOffset');
          }
 
-         redefineAll($DataView[PROTOTYPE], {
+         redefineAll$3(DataViewPrototype$1, {
            getInt8: function getInt8(byteOffset) {
              return get$4(this, 1, byteOffset)[0] << 24 >> 24;
            },
            }
          });
        } else {
+         var INCORRECT_ARRAY_BUFFER_NAME = PROPER_FUNCTION_NAME$2 && NativeArrayBuffer$1.name !== ARRAY_BUFFER$1;
          /* eslint-disable no-new -- required for testing */
-         if (!fails(function () {
+         if (!fails$J(function () {
            NativeArrayBuffer$1(1);
-         }) || !fails(function () {
+         }) || !fails$J(function () {
            new NativeArrayBuffer$1(-1);
-         }) || fails(function () {
+         }) || fails$J(function () {
            new NativeArrayBuffer$1();
            new NativeArrayBuffer$1(1.5);
            new NativeArrayBuffer$1(NaN);
-           return NativeArrayBuffer$1.name != ARRAY_BUFFER$1;
+           return INCORRECT_ARRAY_BUFFER_NAME && !CONFIGURABLE_FUNCTION_NAME;
          })) {
          /* eslint-enable no-new -- required for testing */
            $ArrayBuffer = function ArrayBuffer(length) {
-             anInstance(this, $ArrayBuffer);
-             return new NativeArrayBuffer$1(toIndex(length));
+             anInstance$6(this, ArrayBufferPrototype$1);
+             return new NativeArrayBuffer$1(toIndex$1(length));
            };
-           var ArrayBufferPrototype = $ArrayBuffer[PROTOTYPE] = NativeArrayBuffer$1[PROTOTYPE];
-           for (var keys$2 = getOwnPropertyNames$3(NativeArrayBuffer$1), j$2 = 0, key$1; keys$2.length > j$2;) {
+
+           $ArrayBuffer[PROTOTYPE] = ArrayBufferPrototype$1;
+
+           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 $ArrayBuffer)) {
-               createNonEnumerableProperty($ArrayBuffer, key$1, NativeArrayBuffer$1[key$1]);
+               createNonEnumerableProperty$5($ArrayBuffer, key$1, NativeArrayBuffer$1[key$1]);
              }
            }
-           ArrayBufferPrototype.constructor = $ArrayBuffer;
+
+           ArrayBufferPrototype$1.constructor = $ArrayBuffer;
+         } else if (INCORRECT_ARRAY_BUFFER_NAME && CONFIGURABLE_FUNCTION_NAME) {
+           createNonEnumerableProperty$5(NativeArrayBuffer$1, 'name', ARRAY_BUFFER$1);
          }
 
          // WebKit bug - the same parent prototype for typed arrays and data view
-         if (objectSetPrototypeOf && objectGetPrototypeOf($DataViewPrototype) !== ObjectPrototype$1) {
-           objectSetPrototypeOf($DataViewPrototype, ObjectPrototype$1);
+         if (setPrototypeOf$5 && getPrototypeOf$2(DataViewPrototype$1) !== ObjectPrototype$2) {
+           setPrototypeOf$5(DataViewPrototype$1, ObjectPrototype$2);
          }
 
          // iOS Safari 7.x bug
          var testView = new $DataView(new $ArrayBuffer(2));
-         var $setInt8 = $DataViewPrototype.setInt8;
+         var $setInt8 = uncurryThis$E(DataViewPrototype$1.setInt8);
          testView.setInt8(0, 2147483648);
          testView.setInt8(1, 2147483649);
-         if (testView.getInt8(0) || !testView.getInt8(1)) redefineAll($DataViewPrototype, {
+         if (testView.getInt8(0) || !testView.getInt8(1)) redefineAll$3(DataViewPrototype$1, {
            setInt8: function setInt8(byteOffset, value) {
-             $setInt8.call(this, byteOffset, value << 24 >> 24);
+             $setInt8(this, byteOffset, value << 24 >> 24);
            },
            setUint8: function setUint8(byteOffset, value) {
-             $setInt8.call(this, byteOffset, value << 24 >> 24);
+             $setInt8(this, byteOffset, value << 24 >> 24);
            }
          }, { unsafe: true });
        }
 
-       setToStringTag($ArrayBuffer, ARRAY_BUFFER$1);
-       setToStringTag($DataView, DATA_VIEW);
+       setToStringTag$6($ArrayBuffer, ARRAY_BUFFER$1);
+       setToStringTag$6($DataView, DATA_VIEW);
 
        var arrayBuffer = {
          ArrayBuffer: $ArrayBuffer,
          DataView: $DataView
        };
 
-       var SPECIES$5 = wellKnownSymbol('species');
+       var global$P = global$1o;
+       var isConstructor$2 = isConstructor$4;
+       var tryToString$3 = tryToString$5;
+
+       var TypeError$f = global$P.TypeError;
+
+       // `Assert: IsConstructor(argument) is true`
+       var aConstructor$3 = function (argument) {
+         if (isConstructor$2(argument)) return argument;
+         throw TypeError$f(tryToString$3(argument) + ' is not a constructor');
+       };
+
+       var anObject$g = anObject$n;
+       var aConstructor$2 = aConstructor$3;
+       var wellKnownSymbol$h = wellKnownSymbol$t;
+
+       var SPECIES$5 = wellKnownSymbol$h('species');
 
        // `SpeciesConstructor` abstract operation
        // https://tc39.es/ecma262/#sec-speciesconstructor
-       var speciesConstructor = function (O, defaultConstructor) {
-         var C = anObject(O).constructor;
+       var speciesConstructor$5 = function (O, defaultConstructor) {
+         var C = anObject$g(O).constructor;
          var S;
-         return C === undefined || (S = anObject(C)[SPECIES$5]) == undefined ? defaultConstructor : aFunction(S);
+         return C === undefined || (S = anObject$g(C)[SPECIES$5]) == undefined ? defaultConstructor : aConstructor$2(S);
        };
 
-       var ArrayBuffer$3 = arrayBuffer.ArrayBuffer;
-       var DataView$1 = arrayBuffer.DataView;
-       var nativeArrayBufferSlice = ArrayBuffer$3.prototype.slice;
-
-       var INCORRECT_SLICE = fails(function () {
-         return !new ArrayBuffer$3(2).slice(1, undefined).byteLength;
+       var $$19 = _export;
+       var uncurryThis$D = functionUncurryThis;
+       var fails$I = fails$V;
+       var ArrayBufferModule$2 = arrayBuffer;
+       var anObject$f = anObject$n;
+       var toAbsoluteIndex$5 = toAbsoluteIndex$9;
+       var toLength$8 = toLength$c;
+       var speciesConstructor$4 = speciesConstructor$5;
+
+       var ArrayBuffer$4 = ArrayBufferModule$2.ArrayBuffer;
+       var DataView$2 = ArrayBufferModule$2.DataView;
+       var DataViewPrototype = DataView$2.prototype;
+       var un$ArrayBufferSlice = uncurryThis$D(ArrayBuffer$4.prototype.slice);
+       var getUint8 = uncurryThis$D(DataViewPrototype.getUint8);
+       var setUint8 = uncurryThis$D(DataViewPrototype.setUint8);
+
+       var INCORRECT_SLICE = fails$I(function () {
+         return !new ArrayBuffer$4(2).slice(1, undefined).byteLength;
        });
 
        // `ArrayBuffer.prototype.slice` method
        // https://tc39.es/ecma262/#sec-arraybuffer.prototype.slice
-       _export({ target: 'ArrayBuffer', proto: true, unsafe: true, forced: INCORRECT_SLICE }, {
+       $$19({ 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$3))(toLength(fin - first));
-           var viewSource = new DataView$1(this);
-           var viewTarget = new DataView$1(result);
+           if (un$ArrayBufferSlice && end === undefined) {
+             return un$ArrayBufferSlice(anObject$f(this), start); // FF fix
+           }
+           var length = anObject$f(this).byteLength;
+           var first = toAbsoluteIndex$5(start, length);
+           var fin = toAbsoluteIndex$5(end === undefined ? length : end, length);
+           var result = new (speciesConstructor$4(this, ArrayBuffer$4))(toLength$8(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++));
+             setUint8(viewTarget, index++, getUint8(viewSource, first++));
            } return result;
          }
        });
 
+       var $$18 = _export;
+       var ArrayBufferModule$1 = arrayBuffer;
+       var NATIVE_ARRAY_BUFFER$1 = arrayBufferNative;
+
        // `DataView` constructor
        // https://tc39.es/ecma262/#sec-dataview-constructor
-       _export({ global: true, forced: !arrayBufferNative }, {
-         DataView: arrayBuffer.DataView
+       $$18({ global: true, forced: !NATIVE_ARRAY_BUFFER$1 }, {
+         DataView: ArrayBufferModule$1.DataView
        });
 
-       var defineProperty$5 = objectDefineProperty.f;
-
-
-
-
-
-       var Int8Array$3 = global$2.Int8Array;
-       var Int8ArrayPrototype = Int8Array$3 && Int8Array$3.prototype;
-       var Uint8ClampedArray = global$2.Uint8ClampedArray;
-       var Uint8ClampedArrayPrototype = Uint8ClampedArray && Uint8ClampedArray.prototype;
-       var TypedArray = Int8Array$3 && objectGetPrototypeOf(Int8Array$3);
-       var TypedArrayPrototype = Int8ArrayPrototype && objectGetPrototypeOf(Int8ArrayPrototype);
-       var ObjectPrototype = Object.prototype;
-       var isPrototypeOf = ObjectPrototype.isPrototypeOf;
+       var NATIVE_ARRAY_BUFFER = arrayBufferNative;
+       var DESCRIPTORS$e = descriptors;
+       var global$O = global$1o;
+       var isCallable$9 = isCallable$r;
+       var isObject$k = isObject$s;
+       var hasOwn$9 = hasOwnProperty_1;
+       var classof$7 = classof$d;
+       var tryToString$2 = tryToString$5;
+       var createNonEnumerableProperty$4 = createNonEnumerableProperty$b;
+       var redefine$9 = redefine$h.exports;
+       var defineProperty$7 = objectDefineProperty.f;
+       var isPrototypeOf$5 = objectIsPrototypeOf;
+       var getPrototypeOf$1 = objectGetPrototypeOf;
+       var setPrototypeOf$4 = objectSetPrototypeOf;
+       var wellKnownSymbol$g = wellKnownSymbol$t;
+       var uid$1 = uid$5;
+
+       var Int8Array$4 = global$O.Int8Array;
+       var Int8ArrayPrototype$1 = Int8Array$4 && Int8Array$4.prototype;
+       var Uint8ClampedArray$1 = global$O.Uint8ClampedArray;
+       var Uint8ClampedArrayPrototype = Uint8ClampedArray$1 && Uint8ClampedArray$1.prototype;
+       var TypedArray$1 = Int8Array$4 && getPrototypeOf$1(Int8Array$4);
+       var TypedArrayPrototype$2 = Int8ArrayPrototype$1 && getPrototypeOf$1(Int8ArrayPrototype$1);
+       var ObjectPrototype$1 = Object.prototype;
+       var TypeError$e = global$O.TypeError;
 
-       var TO_STRING_TAG = 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');
+       var TYPED_ARRAY_CONSTRUCTOR$2 = uid$1('TYPED_ARRAY_CONSTRUCTOR');
        // Fixing native typed arrays in Opera Presto crashes the browser, see #595
-       var NATIVE_ARRAY_BUFFER_VIEWS$2 = arrayBufferNative && !!objectSetPrototypeOf && classof(global$2.opera) !== 'Opera';
-       var TYPED_ARRAY_TAG_REQIRED = false;
-       var NAME$1;
+       var NATIVE_ARRAY_BUFFER_VIEWS$3 = NATIVE_ARRAY_BUFFER && !!setPrototypeOf$4 && classof$7(global$O.opera) !== 'Opera';
+       var TYPED_ARRAY_TAG_REQUIRED = false;
+       var NAME$1, Constructor, Prototype;
 
        var TypedArrayConstructorsList = {
          Int8Array: 1,
        };
 
        var isView = function isView(it) {
-         if (!isObject$4(it)) return false;
-         var klass = classof(it);
+         if (!isObject$k(it)) return false;
+         var klass = classof$7(it);
          return klass === 'DataView'
-           || has$1(TypedArrayConstructorsList, klass)
-           || has$1(BigIntArrayConstructorsList, klass);
+           || hasOwn$9(TypedArrayConstructorsList, klass)
+           || hasOwn$9(BigIntArrayConstructorsList, klass);
        };
 
-       var isTypedArray = function (it) {
-         if (!isObject$4(it)) return false;
-         var klass = classof(it);
-         return has$1(TypedArrayConstructorsList, klass)
-           || has$1(BigIntArrayConstructorsList, klass);
+       var isTypedArray$1 = function (it) {
+         if (!isObject$k(it)) return false;
+         var klass = classof$7(it);
+         return hasOwn$9(TypedArrayConstructorsList, klass)
+           || hasOwn$9(BigIntArrayConstructorsList, klass);
        };
 
        var aTypedArray$m = function (it) {
-         if (isTypedArray(it)) return it;
-         throw TypeError('Target is not a typed array');
+         if (isTypedArray$1(it)) return it;
+         throw TypeError$e('Target is not a typed array');
        };
 
-       var aTypedArrayConstructor$4 = function (C) {
-         if (objectSetPrototypeOf) {
-           if (isPrototypeOf.call(TypedArray, C)) return C;
-         } else for (var ARRAY in TypedArrayConstructorsList) if (has$1(TypedArrayConstructorsList, NAME$1)) {
-           var TypedArrayConstructor = global$2[ARRAY];
-           if (TypedArrayConstructor && (C === TypedArrayConstructor || isPrototypeOf.call(TypedArrayConstructor, C))) {
-             return C;
-           }
-         } throw TypeError('Target is not a typed array constructor');
+       var aTypedArrayConstructor$3 = function (C) {
+         if (isCallable$9(C) && (!setPrototypeOf$4 || isPrototypeOf$5(TypedArray$1, C))) return C;
+         throw TypeError$e(tryToString$2(C) + ' is not a typed array constructor');
        };
 
-       var exportTypedArrayMethod$n = function (KEY, property, forced) {
-         if (!descriptors) return;
+       var exportTypedArrayMethod$n = function (KEY, property, forced, options) {
+         if (!DESCRIPTORS$e) return;
          if (forced) for (var ARRAY in TypedArrayConstructorsList) {
-           var TypedArrayConstructor = global$2[ARRAY];
-           if (TypedArrayConstructor && has$1(TypedArrayConstructor.prototype, KEY)) try {
+           var TypedArrayConstructor = global$O[ARRAY];
+           if (TypedArrayConstructor && hasOwn$9(TypedArrayConstructor.prototype, KEY)) try {
              delete TypedArrayConstructor.prototype[KEY];
-           } catch (error) { /* empty */ }
+           } catch (error) {
+             // old WebKit bug - some methods are non-configurable
+             try {
+               TypedArrayConstructor.prototype[KEY] = property;
+             } catch (error2) { /* empty */ }
+           }
          }
-         if (!TypedArrayPrototype[KEY] || forced) {
-           redefine(TypedArrayPrototype, KEY, forced ? property
-             : NATIVE_ARRAY_BUFFER_VIEWS$2 && Int8ArrayPrototype[KEY] || property);
+         if (!TypedArrayPrototype$2[KEY] || forced) {
+           redefine$9(TypedArrayPrototype$2, KEY, forced ? property
+             : NATIVE_ARRAY_BUFFER_VIEWS$3 && Int8ArrayPrototype$1[KEY] || property, options);
          }
        };
 
        var exportTypedArrayStaticMethod$1 = function (KEY, property, forced) {
          var ARRAY, TypedArrayConstructor;
-         if (!descriptors) return;
-         if (objectSetPrototypeOf) {
+         if (!DESCRIPTORS$e) return;
+         if (setPrototypeOf$4) {
            if (forced) for (ARRAY in TypedArrayConstructorsList) {
-             TypedArrayConstructor = global$2[ARRAY];
-             if (TypedArrayConstructor && has$1(TypedArrayConstructor, KEY)) try {
+             TypedArrayConstructor = global$O[ARRAY];
+             if (TypedArrayConstructor && hasOwn$9(TypedArrayConstructor, KEY)) try {
                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 {
-               return redefine(TypedArray, KEY, forced ? property : NATIVE_ARRAY_BUFFER_VIEWS$2 && TypedArray[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) {
-           TypedArrayConstructor = global$2[ARRAY];
+           TypedArrayConstructor = global$O[ARRAY];
            if (TypedArrayConstructor && (!TypedArrayConstructor[KEY] || forced)) {
-             redefine(TypedArrayConstructor, KEY, property);
+             redefine$9(TypedArrayConstructor, KEY, property);
            }
          }
        };
 
        for (NAME$1 in TypedArrayConstructorsList) {
-         if (!global$2[NAME$1]) NATIVE_ARRAY_BUFFER_VIEWS$2 = false;
+         Constructor = global$O[NAME$1];
+         Prototype = Constructor && Constructor.prototype;
+         if (Prototype) createNonEnumerableProperty$4(Prototype, TYPED_ARRAY_CONSTRUCTOR$2, Constructor);
+         else NATIVE_ARRAY_BUFFER_VIEWS$3 = false;
+       }
+
+       for (NAME$1 in BigIntArrayConstructorsList) {
+         Constructor = global$O[NAME$1];
+         Prototype = Constructor && Constructor.prototype;
+         if (Prototype) createNonEnumerableProperty$4(Prototype, TYPED_ARRAY_CONSTRUCTOR$2, Constructor);
        }
 
        // WebKit bug - typed arrays constructors prototype is Object.prototype
-       if (!NATIVE_ARRAY_BUFFER_VIEWS$2 || typeof TypedArray != 'function' || TypedArray === Function.prototype) {
+       if (!NATIVE_ARRAY_BUFFER_VIEWS$3 || !isCallable$9(TypedArray$1) || TypedArray$1 === Function.prototype) {
          // eslint-disable-next-line no-shadow -- safe
-         TypedArray = function TypedArray() {
-           throw TypeError('Incorrect invocation');
+         TypedArray$1 = function TypedArray() {
+           throw TypeError$e('Incorrect invocation');
          };
-         if (NATIVE_ARRAY_BUFFER_VIEWS$2) for (NAME$1 in TypedArrayConstructorsList) {
-           if (global$2[NAME$1]) objectSetPrototypeOf(global$2[NAME$1], TypedArray);
+         if (NATIVE_ARRAY_BUFFER_VIEWS$3) for (NAME$1 in TypedArrayConstructorsList) {
+           if (global$O[NAME$1]) setPrototypeOf$4(global$O[NAME$1], TypedArray$1);
          }
        }
 
-       if (!NATIVE_ARRAY_BUFFER_VIEWS$2 || !TypedArrayPrototype || TypedArrayPrototype === ObjectPrototype) {
-         TypedArrayPrototype = TypedArray.prototype;
-         if (NATIVE_ARRAY_BUFFER_VIEWS$2) for (NAME$1 in TypedArrayConstructorsList) {
-           if (global$2[NAME$1]) objectSetPrototypeOf(global$2[NAME$1].prototype, TypedArrayPrototype);
+       if (!NATIVE_ARRAY_BUFFER_VIEWS$3 || !TypedArrayPrototype$2 || TypedArrayPrototype$2 === ObjectPrototype$1) {
+         TypedArrayPrototype$2 = TypedArray$1.prototype;
+         if (NATIVE_ARRAY_BUFFER_VIEWS$3) for (NAME$1 in TypedArrayConstructorsList) {
+           if (global$O[NAME$1]) setPrototypeOf$4(global$O[NAME$1].prototype, TypedArrayPrototype$2);
          }
        }
 
        // WebKit bug - one more object in Uint8ClampedArray prototype chain
-       if (NATIVE_ARRAY_BUFFER_VIEWS$2 && objectGetPrototypeOf(Uint8ClampedArrayPrototype) !== TypedArrayPrototype) {
-         objectSetPrototypeOf(Uint8ClampedArrayPrototype, TypedArrayPrototype);
+       if (NATIVE_ARRAY_BUFFER_VIEWS$3 && getPrototypeOf$1(Uint8ClampedArrayPrototype) !== TypedArrayPrototype$2) {
+         setPrototypeOf$4(Uint8ClampedArrayPrototype, TypedArrayPrototype$2);
        }
 
-       if (descriptors && !has$1(TypedArrayPrototype, TO_STRING_TAG)) {
-         TYPED_ARRAY_TAG_REQIRED = true;
-         defineProperty$5(TypedArrayPrototype, TO_STRING_TAG, { get: function () {
-           return isObject$4(this) ? this[TYPED_ARRAY_TAG] : undefined;
+       if (DESCRIPTORS$e && !hasOwn$9(TypedArrayPrototype$2, TO_STRING_TAG)) {
+         TYPED_ARRAY_TAG_REQUIRED = true;
+         defineProperty$7(TypedArrayPrototype$2, TO_STRING_TAG, { get: function () {
+           return isObject$k(this) ? this[TYPED_ARRAY_TAG$1] : undefined;
          } });
-         for (NAME$1 in TypedArrayConstructorsList) if (global$2[NAME$1]) {
-           createNonEnumerableProperty(global$2[NAME$1], TYPED_ARRAY_TAG, NAME$1);
+         for (NAME$1 in TypedArrayConstructorsList) if (global$O[NAME$1]) {
+           createNonEnumerableProperty$4(global$O[NAME$1], TYPED_ARRAY_TAG$1, NAME$1);
          }
        }
 
        var arrayBufferViewCore = {
-         NATIVE_ARRAY_BUFFER_VIEWS: NATIVE_ARRAY_BUFFER_VIEWS$2,
-         TYPED_ARRAY_TAG: TYPED_ARRAY_TAG_REQIRED && TYPED_ARRAY_TAG,
+         NATIVE_ARRAY_BUFFER_VIEWS: NATIVE_ARRAY_BUFFER_VIEWS$3,
+         TYPED_ARRAY_CONSTRUCTOR: TYPED_ARRAY_CONSTRUCTOR$2,
+         TYPED_ARRAY_TAG: TYPED_ARRAY_TAG_REQUIRED && TYPED_ARRAY_TAG$1,
          aTypedArray: aTypedArray$m,
-         aTypedArrayConstructor: aTypedArrayConstructor$4,
+         aTypedArrayConstructor: aTypedArrayConstructor$3,
          exportTypedArrayMethod: exportTypedArrayMethod$n,
          exportTypedArrayStaticMethod: exportTypedArrayStaticMethod$1,
          isView: isView,
-         isTypedArray: isTypedArray,
-         TypedArray: TypedArray,
-         TypedArrayPrototype: TypedArrayPrototype
+         isTypedArray: isTypedArray$1,
+         TypedArray: TypedArray$1,
+         TypedArrayPrototype: TypedArrayPrototype$2
        };
 
-       var NATIVE_ARRAY_BUFFER_VIEWS$1 = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;
+       var $$17 = _export;
+       var ArrayBufferViewCore$o = arrayBufferViewCore;
+
+       var NATIVE_ARRAY_BUFFER_VIEWS$2 = ArrayBufferViewCore$o.NATIVE_ARRAY_BUFFER_VIEWS;
 
        // `ArrayBuffer.isView` method
        // https://tc39.es/ecma262/#sec-arraybuffer.isview
-       _export({ target: 'ArrayBuffer', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS$1 }, {
-         isView: arrayBufferViewCore.isView
+       $$17({ target: 'ArrayBuffer', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS$2 }, {
+         isView: ArrayBufferViewCore$o.isView
        });
 
-       var SPECIES$4 = wellKnownSymbol('species');
+       var getBuiltIn$4 = getBuiltIn$b;
+       var definePropertyModule$1 = objectDefineProperty;
+       var wellKnownSymbol$f = wellKnownSymbol$t;
+       var DESCRIPTORS$d = descriptors;
+
+       var SPECIES$4 = wellKnownSymbol$f('species');
 
-       var setSpecies = function (CONSTRUCTOR_NAME) {
-         var Constructor = getBuiltIn(CONSTRUCTOR_NAME);
-         var defineProperty = objectDefineProperty.f;
+       var setSpecies$5 = function (CONSTRUCTOR_NAME) {
+         var Constructor = getBuiltIn$4(CONSTRUCTOR_NAME);
+         var defineProperty = definePropertyModule$1.f;
 
-         if (descriptors && Constructor && !Constructor[SPECIES$4]) {
+         if (DESCRIPTORS$d && Constructor && !Constructor[SPECIES$4]) {
            defineProperty(Constructor, SPECIES$4, {
              configurable: true,
              get: function () { return this; }
          }
        };
 
+       var $$16 = _export;
+       var global$N = global$1o;
+       var arrayBufferModule = arrayBuffer;
+       var setSpecies$4 = setSpecies$5;
+
        var ARRAY_BUFFER = 'ArrayBuffer';
-       var ArrayBuffer$2 = arrayBuffer[ARRAY_BUFFER];
-       var NativeArrayBuffer = global$2[ARRAY_BUFFER];
+       var ArrayBuffer$3 = arrayBufferModule[ARRAY_BUFFER];
+       var NativeArrayBuffer = global$N[ARRAY_BUFFER];
 
        // `ArrayBuffer` constructor
        // https://tc39.es/ecma262/#sec-arraybuffer-constructor
-       _export({ global: true, forced: NativeArrayBuffer !== ArrayBuffer$2 }, {
-         ArrayBuffer: ArrayBuffer$2
+       $$16({ global: true, forced: NativeArrayBuffer !== ArrayBuffer$3 }, {
+         ArrayBuffer: ArrayBuffer$3
        });
 
-       setSpecies(ARRAY_BUFFER);
+       setSpecies$4(ARRAY_BUFFER);
+
+       var fails$H = fails$V;
 
-       var arrayMethodIsStrict = function (METHOD_NAME, argument) {
+       var arrayMethodIsStrict$9 = function (METHOD_NAME, argument) {
          var method = [][METHOD_NAME];
-         return !!method && fails(function () {
+         return !!method && fails$H(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 $$15 = _export;
+       var uncurryThis$C = functionUncurryThis;
+       var $IndexOf = arrayIncludes.indexOf;
+       var arrayMethodIsStrict$8 = arrayMethodIsStrict$9;
 
-       var $indexOf$1 = arrayIncludes.indexOf;
+       var un$IndexOf = uncurryThis$C([].indexOf);
 
-
-       var nativeIndexOf = [].indexOf;
-
-       var NEGATIVE_ZERO$1 = !!nativeIndexOf && 1 / [1].indexOf(1, -0) < 0;
-       var STRICT_METHOD$7 = arrayMethodIsStrict('indexOf');
+       var NEGATIVE_ZERO$1 = !!un$IndexOf && 1 / un$IndexOf([1], 1, -0) < 0;
+       var STRICT_METHOD$8 = arrayMethodIsStrict$8('indexOf');
 
        // `Array.prototype.indexOf` method
        // https://tc39.es/ecma262/#sec-array.prototype.indexof
-       _export({ target: 'Array', proto: true, forced: NEGATIVE_ZERO$1 || !STRICT_METHOD$7 }, {
+       $$15({ target: 'Array', proto: true, forced: NEGATIVE_ZERO$1 || !STRICT_METHOD$8 }, {
          indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {
+           var fromIndex = arguments.length > 1 ? arguments[1] : undefined;
            return NEGATIVE_ZERO$1
              // convert -0 to +0
-             ? nativeIndexOf.apply(this, arguments) || 0
-             : $indexOf$1(this, searchElement, arguments.length > 1 ? arguments[1] : undefined);
+             ? un$IndexOf(this, searchElement, fromIndex) || 0
+             : $IndexOf(this, searchElement, fromIndex);
          }
        });
 
-       var SPECIES$3 = wellKnownSymbol('species');
+       var anObject$e = anObject$n;
+
+       // `RegExp.prototype.flags` getter implementation
+       // https://tc39.es/ecma262/#sec-get-regexp.prototype.flags
+       var regexpFlags$1 = function () {
+         var that = anObject$e(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;
+       };
+
+       var fails$G = fails$V;
+       var global$M = global$1o;
+
+       // babel-minify and Closure Compiler transpiles RegExp('a', 'y') -> /a/y and it causes SyntaxError
+       var $RegExp$2 = global$M.RegExp;
+
+       var UNSUPPORTED_Y$3 = fails$G(function () {
+         var re = $RegExp$2('a', 'y');
+         re.lastIndex = 2;
+         return re.exec('abcd') != null;
+       });
+
+       // UC Browser bug
+       // https://github.com/zloirock/core-js/issues/1008
+       var MISSED_STICKY$1 = UNSUPPORTED_Y$3 || fails$G(function () {
+         return !$RegExp$2('a', 'y').sticky;
+       });
+
+       var BROKEN_CARET = UNSUPPORTED_Y$3 || fails$G(function () {
+         // https://bugzilla.mozilla.org/show_bug.cgi?id=773687
+         var re = $RegExp$2('^r', 'gy');
+         re.lastIndex = 2;
+         return re.exec('str') != null;
+       });
+
+       var regexpStickyHelpers = {
+         BROKEN_CARET: BROKEN_CARET,
+         MISSED_STICKY: MISSED_STICKY$1,
+         UNSUPPORTED_Y: UNSUPPORTED_Y$3
+       };
+
+       var fails$F = fails$V;
+       var global$L = global$1o;
+
+       // babel-minify and Closure Compiler transpiles RegExp('.', 's') -> /./s and it causes SyntaxError
+       var $RegExp$1 = global$L.RegExp;
+
+       var regexpUnsupportedDotAll = fails$F(function () {
+         var re = $RegExp$1('.', 's');
+         return !(re.dotAll && re.exec('\n') && re.flags === 's');
+       });
+
+       var fails$E = fails$V;
+       var global$K = global$1o;
+
+       // babel-minify and Closure Compiler transpiles RegExp('(?<a>b)', 'g') -> /(?<a>b)/g and it causes SyntaxError
+       var $RegExp = global$K.RegExp;
 
-       var arrayMethodHasSpeciesSupport = function (METHOD_NAME) {
+       var regexpUnsupportedNcg = fails$E(function () {
+         var re = $RegExp('(?<a>b)', 'g');
+         return re.exec('b').groups.a !== 'b' ||
+           'b'.replace(re, '$<a>c') !== 'bc';
+       });
+
+       /* eslint-disable regexp/no-empty-capturing-group, regexp/no-empty-group, regexp/no-lazy-ends -- testing */
+       /* eslint-disable regexp/no-useless-quantifier -- testing */
+       var call$i = functionCall;
+       var uncurryThis$B = functionUncurryThis;
+       var toString$g = toString$k;
+       var regexpFlags = regexpFlags$1;
+       var stickyHelpers$2 = regexpStickyHelpers;
+       var shared = shared$5.exports;
+       var create$8 = objectCreate;
+       var getInternalState$2 = internalState.get;
+       var UNSUPPORTED_DOT_ALL$1 = regexpUnsupportedDotAll;
+       var UNSUPPORTED_NCG$1 = regexpUnsupportedNcg;
+
+       var nativeReplace = shared('native-string-replace', String.prototype.replace);
+       var nativeExec = RegExp.prototype.exec;
+       var patchedExec = nativeExec;
+       var charAt$6 = uncurryThis$B(''.charAt);
+       var indexOf = uncurryThis$B(''.indexOf);
+       var replace$7 = uncurryThis$B(''.replace);
+       var stringSlice$9 = uncurryThis$B(''.slice);
+
+       var UPDATES_LAST_INDEX_WRONG = (function () {
+         var re1 = /a/;
+         var re2 = /b*/g;
+         call$i(nativeExec, re1, 'a');
+         call$i(nativeExec, re2, 'a');
+         return re1.lastIndex !== 0 || re2.lastIndex !== 0;
+       })();
+
+       var UNSUPPORTED_Y$2 = stickyHelpers$2.BROKEN_CARET;
+
+       // nonparticipating capturing group, copied from es5-shim's String#split patch.
+       var NPCG_INCLUDED = /()??/.exec('')[1] !== undefined;
+
+       var PATCH = UPDATES_LAST_INDEX_WRONG || NPCG_INCLUDED || UNSUPPORTED_Y$2 || UNSUPPORTED_DOT_ALL$1 || UNSUPPORTED_NCG$1;
+
+       if (PATCH) {
+         patchedExec = function exec(string) {
+           var re = this;
+           var state = getInternalState$2(re);
+           var str = toString$g(string);
+           var raw = state.raw;
+           var result, reCopy, lastIndex, match, i, object, group;
+
+           if (raw) {
+             raw.lastIndex = re.lastIndex;
+             result = call$i(patchedExec, raw, str);
+             re.lastIndex = raw.lastIndex;
+             return result;
+           }
+
+           var groups = state.groups;
+           var sticky = UNSUPPORTED_Y$2 && re.sticky;
+           var flags = call$i(regexpFlags, re);
+           var source = re.source;
+           var charsAdded = 0;
+           var strCopy = str;
+
+           if (sticky) {
+             flags = replace$7(flags, 'y', '');
+             if (indexOf(flags, 'g') === -1) {
+               flags += 'g';
+             }
+
+             strCopy = stringSlice$9(str, re.lastIndex);
+             // Support anchored sticky behavior.
+             if (re.lastIndex > 0 && (!re.multiline || re.multiline && charAt$6(str, re.lastIndex - 1) !== '\n')) {
+               source = '(?: ' + source + ')';
+               strCopy = ' ' + strCopy;
+               charsAdded++;
+             }
+             // ^(? + rx + ) is needed, in combination with some str slicing, to
+             // simulate the 'y' flag.
+             reCopy = new RegExp('^(?:' + source + ')', flags);
+           }
+
+           if (NPCG_INCLUDED) {
+             reCopy = new RegExp('^' + source + '$(?!\\s)', flags);
+           }
+           if (UPDATES_LAST_INDEX_WRONG) lastIndex = re.lastIndex;
+
+           match = call$i(nativeExec, sticky ? reCopy : re, strCopy);
+
+           if (sticky) {
+             if (match) {
+               match.input = stringSlice$9(match.input, charsAdded);
+               match[0] = stringSlice$9(match[0], charsAdded);
+               match.index = re.lastIndex;
+               re.lastIndex += match[0].length;
+             } else re.lastIndex = 0;
+           } else if (UPDATES_LAST_INDEX_WRONG && match) {
+             re.lastIndex = re.global ? match.index + match[0].length : lastIndex;
+           }
+           if (NPCG_INCLUDED && match && match.length > 1) {
+             // Fix browsers whose `exec` methods don't consistently return `undefined`
+             // for NPCG, like IE8. NOTE: This doesn' work for /(.?)?/
+             call$i(nativeReplace, match[0], reCopy, function () {
+               for (i = 1; i < arguments.length - 2; i++) {
+                 if (arguments[i] === undefined) match[i] = undefined;
+               }
+             });
+           }
+
+           if (match && groups) {
+             match.groups = object = create$8(null);
+             for (i = 0; i < groups.length; i++) {
+               group = groups[i];
+               object[group[0]] = match[group[1]];
+             }
+           }
+
+           return match;
+         };
+       }
+
+       var regexpExec$3 = patchedExec;
+
+       var $$14 = _export;
+       var exec$5 = regexpExec$3;
+
+       // `RegExp.prototype.exec` method
+       // https://tc39.es/ecma262/#sec-regexp.prototype.exec
+       $$14({ target: 'RegExp', proto: true, forced: /./.exec !== exec$5 }, {
+         exec: exec$5
+       });
+
+       var fails$D = fails$V;
+       var wellKnownSymbol$e = wellKnownSymbol$t;
+       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 engineV8Version >= 51 || !fails(function () {
+         return V8_VERSION$2 >= 51 || !fails$D(function () {
            var array = [];
            var constructor = array.constructor = {};
            constructor[SPECIES$3] = function () {
          });
        };
 
+       var $$13 = _export;
        var $map$1 = arrayIteration.map;
+       var arrayMethodHasSpeciesSupport$4 = arrayMethodHasSpeciesSupport$5;
 
-
-       var HAS_SPECIES_SUPPORT$3 = arrayMethodHasSpeciesSupport('map');
+       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
-       _export({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$3 }, {
+       $$13({ 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 $forEach$1 = arrayIteration.forEach;
+       var arrayMethodIsStrict$7 = arrayMethodIsStrict$9;
 
-
-       var STRICT_METHOD$6 = arrayMethodIsStrict('forEach');
+       var STRICT_METHOD$7 = arrayMethodIsStrict$7('forEach');
 
        // `Array.prototype.forEach` method implementation
        // https://tc39.es/ecma262/#sec-array.prototype.foreach
-       var arrayForEach = !STRICT_METHOD$6 ? function forEach(callbackfn /* , thisArg */) {
+       var arrayForEach = !STRICT_METHOD$7 ? 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 $$12 = _export;
+       var forEach$3 = arrayForEach;
+
        // `Array.prototype.forEach` method
        // https://tc39.es/ecma262/#sec-array.prototype.foreach
        // eslint-disable-next-line es/no-array-prototype-foreach -- safe
-       _export({ target: 'Array', proto: true, forced: [].forEach != arrayForEach }, {
-         forEach: arrayForEach
+       $$12({ target: 'Array', proto: true, forced: [].forEach != forEach$3 }, {
+         forEach: forEach$3
        });
 
-       for (var COLLECTION_NAME in domIterables) {
-         var Collection = global$2[COLLECTION_NAME];
-         var CollectionPrototype = Collection && Collection.prototype;
+       var global$J = global$1o;
+       var DOMIterables = domIterables;
+       var DOMTokenListPrototype = domTokenListPrototype;
+       var forEach$2 = arrayForEach;
+       var createNonEnumerableProperty$3 = createNonEnumerableProperty$b;
+
+       var handlePrototype = function (CollectionPrototype) {
          // some Chrome versions have non-configurable methods on DOMTokenList
-         if (CollectionPrototype && CollectionPrototype.forEach !== arrayForEach) try {
-           createNonEnumerableProperty(CollectionPrototype, 'forEach', arrayForEach);
+         if (CollectionPrototype && CollectionPrototype.forEach !== forEach$2) try {
+           createNonEnumerableProperty$3(CollectionPrototype, 'forEach', forEach$2);
          } catch (error) {
-           CollectionPrototype.forEach = arrayForEach;
+           CollectionPrototype.forEach = forEach$2;
+         }
+       };
+
+       for (var COLLECTION_NAME in DOMIterables) {
+         if (DOMIterables[COLLECTION_NAME]) {
+           handlePrototype(global$J[COLLECTION_NAME] && global$J[COLLECTION_NAME].prototype);
          }
        }
 
+       handlePrototype(DOMTokenListPrototype);
+
+       var $$11 = _export;
+       var isArray$5 = isArray$8;
+
        // `Array.isArray` method
        // https://tc39.es/ecma262/#sec-array.isarray
-       _export({ target: 'Array', stat: true }, {
-         isArray: isArray
+       $$11({ target: 'Array', stat: true }, {
+         isArray: isArray$5
        });
 
-       var getOwnPropertyNames$2 = objectGetOwnPropertyNamesExternal.f;
+       var $$10 = _export;
+       var fails$C = fails$V;
+       var getOwnPropertyNames$3 = objectGetOwnPropertyNamesExternal.f;
 
        // eslint-disable-next-line es/no-object-getownpropertynames -- required for testing
-       var FAILS_ON_PRIMITIVES$4 = fails(function () { return !Object.getOwnPropertyNames(1); });
+       var FAILS_ON_PRIMITIVES$5 = fails$C(function () { return !Object.getOwnPropertyNames(1); });
 
        // `Object.getOwnPropertyNames` method
        // https://tc39.es/ecma262/#sec-object.getownpropertynames
-       _export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$4 }, {
-         getOwnPropertyNames: getOwnPropertyNames$2
+       $$10({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$5 }, {
+         getOwnPropertyNames: getOwnPropertyNames$3
        });
 
-       var nativePromiseConstructor = global$2.Promise;
+       var global$I = global$1o;
+
+       var nativePromiseConstructor = global$I.Promise;
+
+       var wellKnownSymbol$d = wellKnownSymbol$t;
+       var Iterators$1 = iterators;
 
-       var ITERATOR$5 = wellKnownSymbol('iterator');
+       var ITERATOR$7 = wellKnownSymbol$d('iterator');
        var ArrayPrototype = Array.prototype;
 
        // check on default Array iterator
-       var isArrayIteratorMethod = function (it) {
-         return it !== undefined && (iterators.Array === it || ArrayPrototype[ITERATOR$5] === it);
+       var isArrayIteratorMethod$3 = function (it) {
+         return it !== undefined && (Iterators$1.Array === it || ArrayPrototype[ITERATOR$7] === it);
        };
 
-       var ITERATOR$4 = wellKnownSymbol('iterator');
+       var classof$6 = classof$d;
+       var getMethod$5 = getMethod$7;
+       var Iterators = iterators;
+       var wellKnownSymbol$c = wellKnownSymbol$t;
+
+       var ITERATOR$6 = wellKnownSymbol$c('iterator');
+
+       var getIteratorMethod$5 = function (it) {
+         if (it != undefined) return getMethod$5(it, ITERATOR$6)
+           || getMethod$5(it, '@@iterator')
+           || Iterators[classof$6(it)];
+       };
+
+       var global$H = global$1o;
+       var call$h = functionCall;
+       var aCallable$7 = aCallable$a;
+       var anObject$d = anObject$n;
+       var tryToString$1 = tryToString$5;
+       var getIteratorMethod$4 = getIteratorMethod$5;
+
+       var TypeError$d = global$H.TypeError;
 
-       var getIteratorMethod = function (it) {
-         if (it != undefined) return it[ITERATOR$4]
-           || it['@@iterator']
-           || iterators[classof(it)];
+       var getIterator$4 = function (argument, usingIterator) {
+         var iteratorMethod = arguments.length < 2 ? getIteratorMethod$4(argument) : usingIterator;
+         if (aCallable$7(iteratorMethod)) return anObject$d(call$h(iteratorMethod, argument));
+         throw TypeError$d(tryToString$1(argument) + ' is not iterable');
        };
 
-       var iteratorClose = function (iterator) {
-         var returnMethod = iterator['return'];
-         if (returnMethod !== undefined) {
-           return anObject(returnMethod.call(iterator)).value;
+       var call$g = functionCall;
+       var anObject$c = anObject$n;
+       var getMethod$4 = getMethod$7;
+
+       var iteratorClose$2 = function (iterator, kind, value) {
+         var innerResult, innerError;
+         anObject$c(iterator);
+         try {
+           innerResult = getMethod$4(iterator, 'return');
+           if (!innerResult) {
+             if (kind === 'throw') throw value;
+             return value;
+           }
+           innerResult = call$g(innerResult, iterator);
+         } catch (error) {
+           innerError = true;
+           innerResult = error;
          }
+         if (kind === 'throw') throw value;
+         if (innerError) throw innerResult;
+         anObject$c(innerResult);
+         return value;
        };
 
+       var global$G = global$1o;
+       var bind$d = functionBindContext;
+       var call$f = functionCall;
+       var anObject$b = anObject$n;
+       var tryToString = tryToString$5;
+       var isArrayIteratorMethod$2 = isArrayIteratorMethod$3;
+       var lengthOfArrayLike$d = lengthOfArrayLike$i;
+       var isPrototypeOf$4 = objectIsPrototypeOf;
+       var getIterator$3 = getIterator$4;
+       var getIteratorMethod$3 = getIteratorMethod$5;
+       var iteratorClose$1 = iteratorClose$2;
+
+       var TypeError$c = global$G.TypeError;
+
        var Result = function (stopped, result) {
          this.stopped = stopped;
          this.result = result;
        };
 
-       var iterate = function (iterable, unboundFunction, options) {
+       var ResultPrototype = Result.prototype;
+
+       var iterate$3 = function (iterable, unboundFunction, options) {
          var that = options && options.that;
          var AS_ENTRIES = !!(options && options.AS_ENTRIES);
          var IS_ITERATOR = !!(options && options.IS_ITERATOR);
          var INTERRUPTED = !!(options && options.INTERRUPTED);
-         var fn = functionBindContext(unboundFunction, that, 1 + AS_ENTRIES + INTERRUPTED);
+         var fn = bind$d(unboundFunction, that);
          var iterator, iterFn, index, length, result, next, step;
 
          var stop = function (condition) {
-           if (iterator) iteratorClose(iterator);
+           if (iterator) iteratorClose$1(iterator, 'normal', condition);
            return new Result(true, condition);
          };
 
          var callFn = function (value) {
            if (AS_ENTRIES) {
-             anObject(value);
+             anObject$b(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 {
-           iterFn = getIteratorMethod(iterable);
-           if (typeof iterFn != 'function') throw TypeError('Target is not iterable');
+           iterFn = getIteratorMethod$3(iterable);
+           if (!iterFn) throw TypeError$c(tryToString(iterable) + ' is not iterable');
            // optimisation for array iterators
-           if (isArrayIteratorMethod(iterFn)) {
-             for (index = 0, length = toLength(iterable.length); length > index; index++) {
+           if (isArrayIteratorMethod$2(iterFn)) {
+             for (index = 0, length = lengthOfArrayLike$d(iterable); length > index; index++) {
                result = callFn(iterable[index]);
-               if (result && result instanceof Result) return result;
+               if (result && isPrototypeOf$4(ResultPrototype, result)) return result;
              } return new Result(false);
            }
-           iterator = iterFn.call(iterable);
+           iterator = getIterator$3(iterable, iterFn);
          }
 
          next = iterator.next;
-         while (!(step = next.call(iterator)).done) {
+         while (!(step = call$f(next, iterator)).done) {
            try {
              result = callFn(step.value);
            } catch (error) {
-             iteratorClose(iterator);
-             throw error;
+             iteratorClose$1(iterator, 'throw', error);
            }
-           if (typeof result == 'object' && result && result instanceof Result) return result;
+           if (typeof result == 'object' && result && isPrototypeOf$4(ResultPrototype, result)) return result;
          } return new Result(false);
        };
 
-       var ITERATOR$3 = wellKnownSymbol('iterator');
+       var wellKnownSymbol$b = wellKnownSymbol$t;
+
+       var ITERATOR$5 = wellKnownSymbol$b('iterator');
        var SAFE_CLOSING = false;
 
        try {
              SAFE_CLOSING = true;
            }
          };
-         iteratorWithReturn[ITERATOR$3] = function () {
+         iteratorWithReturn[ITERATOR$5] = function () {
            return this;
          };
          // eslint-disable-next-line es/no-array-from, no-throw-literal -- required for testing
          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 = {};
-           object[ITERATOR$3] = function () {
+           object[ITERATOR$5] = function () {
              return {
                next: function () {
                  return { done: ITERATION_SUPPORT = true };
          return ITERATION_SUPPORT;
        };
 
-       var engineIsIos = /(?:iphone|ipod|ipad).*applewebkit/i.test(engineUserAgent);
+       var global$F = global$1o;
+
+       var TypeError$b = global$F.TypeError;
 
-       var engineIsNode = classofRaw(global$2.process) == 'process';
+       var validateArgumentsLength$4 = function (passed, required) {
+         if (passed < required) throw TypeError$b('Not enough arguments');
+         return passed;
+       };
 
-       var location$1 = global$2.location;
-       var set$2 = global$2.setImmediate;
-       var clear = global$2.clearImmediate;
-       var process$3 = global$2.process;
-       var MessageChannel = global$2.MessageChannel;
-       var Dispatch$1 = global$2.Dispatch;
+       var userAgent$6 = engineUserAgent;
+
+       var engineIsIos = /(?:ipad|iphone|ipod).*applewebkit/i.test(userAgent$6);
+
+       var classof$5 = classofRaw$1;
+       var global$E = global$1o;
+
+       var engineIsNode = classof$5(global$E.process) == 'process';
+
+       var global$D = global$1o;
+       var apply$7 = functionApply;
+       var bind$c = functionBindContext;
+       var isCallable$8 = isCallable$r;
+       var hasOwn$8 = hasOwnProperty_1;
+       var fails$B = fails$V;
+       var html = html$2;
+       var arraySlice$8 = arraySlice$b;
+       var createElement = documentCreateElement$2;
+       var validateArgumentsLength$3 = validateArgumentsLength$4;
+       var IS_IOS$1 = engineIsIos;
+       var IS_NODE$4 = engineIsNode;
+
+       var set$2 = global$D.setImmediate;
+       var clear = global$D.clearImmediate;
+       var process$3 = global$D.process;
+       var Dispatch$1 = global$D.Dispatch;
+       var Function$3 = global$D.Function;
+       var MessageChannel = global$D.MessageChannel;
+       var String$2 = global$D.String;
        var counter = 0;
-       var queue = {};
+       var queue$1 = {};
        var ONREADYSTATECHANGE = 'onreadystatechange';
-       var defer, channel, port;
+       var location$1, defer, channel, port;
+
+       try {
+         // Deno throws a ReferenceError on `location` access without `--location` flag
+         location$1 = global$D.location;
+       } catch (error) { /* empty */ }
 
        var run = function (id) {
-         // eslint-disable-next-line no-prototype-builtins -- safe
-         if (queue.hasOwnProperty(id)) {
-           var fn = queue[id];
-           delete queue[id];
+         if (hasOwn$8(queue$1, id)) {
+           var fn = queue$1[id];
+           delete queue$1[id];
            fn();
          }
        };
 
        var post = function (id) {
          // old engines have not location.origin
-         global$2.postMessage(id + '', location$1.protocol + '//' + location$1.host);
+         global$D.postMessage(String$2(id), location$1.protocol + '//' + location$1.host);
        };
 
        // Node.js 0.9+ & IE10+ has setImmediate, otherwise:
        if (!set$2 || !clear) {
-         set$2 = function setImmediate(fn) {
-           var args = [];
-           var i = 1;
-           while (arguments.length > i) args.push(arguments[i++]);
-           queue[++counter] = function () {
-             // eslint-disable-next-line no-new-func -- spec requirement
-             (typeof fn == 'function' ? fn : Function(fn)).apply(undefined, args);
+         set$2 = function setImmediate(handler) {
+           validateArgumentsLength$3(arguments.length, 1);
+           var fn = isCallable$8(handler) ? handler : Function$3(handler);
+           var args = arraySlice$8(arguments, 1);
+           queue$1[++counter] = function () {
+             apply$7(fn, undefined, args);
            };
            defer(counter);
            return counter;
          };
          clear = function clearImmediate(id) {
-           delete queue[id];
+           delete queue$1[id];
          };
          // Node.js 0.8-
-         if (engineIsNode) {
+         if (IS_NODE$4) {
            defer = function (id) {
              process$3.nextTick(runner(id));
            };
            };
          // Browsers with MessageChannel, includes WebWorkers
          // except iOS - https://github.com/zloirock/core-js/issues/624
-         } else if (MessageChannel && !engineIsIos) {
+         } else if (MessageChannel && !IS_IOS$1) {
            channel = new MessageChannel();
            port = channel.port2;
            channel.port1.onmessage = listener;
-           defer = functionBindContext(port.postMessage, port, 1);
+           defer = bind$c(port.postMessage, port);
          // Browsers with postMessage, skip WebWorkers
          // IE8 has postMessage, but it's sync & typeof its postMessage is 'object'
          } else if (
-           global$2.addEventListener &&
-           typeof postMessage == 'function' &&
-           !global$2.importScripts &&
+           global$D.addEventListener &&
+           isCallable$8(global$D.postMessage) &&
+           !global$D.importScripts &&
            location$1 && location$1.protocol !== 'file:' &&
-           !fails(post)
+           !fails$B(post)
          ) {
            defer = post;
-           global$2.addEventListener('message', listener, false);
+           global$D.addEventListener('message', listener, false);
          // IE8-
-         } else if (ONREADYSTATECHANGE in documentCreateElement('script')) {
+         } else if (ONREADYSTATECHANGE in createElement('script')) {
            defer = function (id) {
-             html.appendChild(documentCreateElement('script'))[ONREADYSTATECHANGE] = function () {
+             html.appendChild(createElement('script'))[ONREADYSTATECHANGE] = function () {
                html.removeChild(this);
                run(id);
              };
          clear: clear
        };
 
-       var engineIsWebosWebkit = /web0s(?!.*chrome)/i.test(engineUserAgent);
-
-       var getOwnPropertyDescriptor$3 = objectGetOwnPropertyDescriptor.f;
-       var macrotask = task$1.set;
+       var userAgent$5 = engineUserAgent;
+       var global$C = global$1o;
 
+       var engineIsIosPebble = /ipad|iphone|ipod/i.test(userAgent$5) && global$C.Pebble !== undefined;
 
+       var userAgent$4 = engineUserAgent;
 
+       var engineIsWebosWebkit = /web0s(?!.*chrome)/i.test(userAgent$4);
 
-       var MutationObserver = global$2.MutationObserver || global$2.WebKitMutationObserver;
-       var document$2 = global$2.document;
-       var process$2 = global$2.process;
-       var Promise$1 = global$2.Promise;
+       var global$B = global$1o;
+       var bind$b = functionBindContext;
+       var getOwnPropertyDescriptor$3 = objectGetOwnPropertyDescriptor.f;
+       var macrotask = task$1.set;
+       var IS_IOS = engineIsIos;
+       var IS_IOS_PEBBLE = engineIsIosPebble;
+       var IS_WEBOS_WEBKIT = engineIsWebosWebkit;
+       var IS_NODE$3 = engineIsNode;
+
+       var MutationObserver = global$B.MutationObserver || global$B.WebKitMutationObserver;
+       var document$2 = global$B.document;
+       var process$2 = global$B.process;
+       var Promise$1 = global$B.Promise;
        // Node.js 11 shows ExperimentalWarning on getting `queueMicrotask`
-       var queueMicrotaskDescriptor = getOwnPropertyDescriptor$3(global$2, 'queueMicrotask');
+       var queueMicrotaskDescriptor = getOwnPropertyDescriptor$3(global$B, 'queueMicrotask');
        var queueMicrotask = queueMicrotaskDescriptor && queueMicrotaskDescriptor.value;
 
        var flush, head, last, notify$1, toggle, node, promise, then;
        if (!queueMicrotask) {
          flush = function () {
            var parent, fn;
-           if (engineIsNode && (parent = process$2.domain)) parent.exit();
+           if (IS_NODE$3 && (parent = process$2.domain)) parent.exit();
            while (head) {
              fn = head.fn;
              head = head.next;
 
          // browsers with MutationObserver, except iOS - https://github.com/zloirock/core-js/issues/339
          // also except WebOS Webkit https://github.com/zloirock/core-js/issues/898
-         if (!engineIsIos && !engineIsNode && !engineIsWebosWebkit && MutationObserver && document$2) {
+         if (!IS_IOS && !IS_NODE$3 && !IS_WEBOS_WEBKIT && MutationObserver && document$2) {
            toggle = true;
            node = document$2.createTextNode('');
            new MutationObserver(flush).observe(node, { characterData: true });
              node.data = toggle = !toggle;
            };
          // environments with maybe non-completely correct, but existent Promise
-         } else if (Promise$1 && Promise$1.resolve) {
+         } else if (!IS_IOS_PEBBLE && 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$1;
-           then = promise.then;
+           then = bind$b(promise.then, promise);
            notify$1 = function () {
-             then.call(promise, flush);
+             then(flush);
            };
          // Node.js without promises
-         } else if (engineIsNode) {
+         } else if (IS_NODE$3) {
            notify$1 = function () {
              process$2.nextTick(flush);
            };
          // - onreadystatechange
          // - setTimeout
          } else {
+           // strange IE + webpack dev server bug - use .bind(global)
+           macrotask = bind$b(macrotask, global$B);
            notify$1 = function () {
-             // strange IE + webpack dev server bug - use .call(global)
-             macrotask.call(global$2, flush);
+             macrotask(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) {
          } last = task;
        };
 
+       var newPromiseCapability$2 = {};
+
+       var aCallable$6 = aCallable$a;
+
        var PromiseCapability = function (C) {
          var resolve, reject;
          this.promise = new C(function ($$resolve, $$reject) {
            resolve = $$resolve;
            reject = $$reject;
          });
-         this.resolve = aFunction(resolve);
-         this.reject = aFunction(reject);
+         this.resolve = aCallable$6(resolve);
+         this.reject = aCallable$6(reject);
        };
 
        // `NewPromiseCapability` abstract operation
        // https://tc39.es/ecma262/#sec-newpromisecapability
-       var f = function (C) {
+       newPromiseCapability$2.f = function (C) {
          return new PromiseCapability(C);
        };
 
-       var newPromiseCapability$1 = {
-               f: f
-       };
+       var anObject$a = anObject$n;
+       var isObject$j = isObject$s;
+       var newPromiseCapability$1 = newPromiseCapability$2;
 
-       var promiseResolve = function (C, x) {
-         anObject(C);
-         if (isObject$4(x) && x.constructor === C) return x;
+       var promiseResolve$2 = function (C, x) {
+         anObject$a(C);
+         if (isObject$j(x) && x.constructor === C) return x;
          var promiseCapability = newPromiseCapability$1.f(C);
          var resolve = promiseCapability.resolve;
          resolve(x);
          return promiseCapability.promise;
        };
 
-       var hostReportErrors = function (a, b) {
-         var console = global$2.console;
+       var global$A = global$1o;
+
+       var hostReportErrors$1 = function (a, b) {
+         var console = global$A.console;
          if (console && console.error) {
-           arguments.length === 1 ? console.error(a) : console.error(a, b);
+           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) {
          }
        };
 
-       var engineIsBrowser = typeof window == 'object';
-
-       var task = task$1.set;
-
-
-
-
-
-
-
-
+       var Queue$1 = function () {
+         this.head = null;
+         this.tail = null;
+       };
 
+       Queue$1.prototype = {
+         add: function (item) {
+           var entry = { item: item, next: null };
+           if (this.head) this.tail.next = entry;
+           else this.head = entry;
+           this.tail = entry;
+         },
+         get: function () {
+           var entry = this.head;
+           if (entry) {
+             this.head = entry.next;
+             if (this.tail === entry) this.tail = null;
+             return entry.item;
+           }
+         }
+       };
 
+       var queue = Queue$1;
 
+       var engineIsBrowser = typeof window == 'object';
 
-       var SPECIES$2 = wellKnownSymbol('species');
+       var $$$ = _export;
+       var global$z = global$1o;
+       var getBuiltIn$3 = getBuiltIn$b;
+       var call$e = functionCall;
+       var NativePromise$1 = nativePromiseConstructor;
+       var redefine$8 = redefine$h.exports;
+       var redefineAll$2 = redefineAll$4;
+       var setPrototypeOf$3 = objectSetPrototypeOf;
+       var setToStringTag$5 = setToStringTag$a;
+       var setSpecies$3 = setSpecies$5;
+       var aCallable$5 = aCallable$a;
+       var isCallable$7 = isCallable$r;
+       var isObject$i = isObject$s;
+       var anInstance$5 = anInstance$7;
+       var inspectSource = inspectSource$4;
+       var iterate$2 = iterate$3;
+       var checkCorrectnessOfIteration$3 = checkCorrectnessOfIteration$4;
+       var speciesConstructor$3 = speciesConstructor$5;
+       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 Queue = queue;
+       var InternalStateModule$4 = internalState;
+       var isForced$3 = isForced_1;
+       var wellKnownSymbol$a = wellKnownSymbol$t;
+       var IS_BROWSER = engineIsBrowser;
+       var IS_NODE$2 = engineIsNode;
+       var V8_VERSION$1 = engineV8Version;
+
+       var SPECIES$2 = wellKnownSymbol$a('species');
        var PROMISE = 'Promise';
-       var getInternalState$1 = internalState.get;
-       var setInternalState$3 = internalState.set;
-       var getInternalPromiseState = internalState.getterFor(PROMISE);
-       var NativePromisePrototype = nativePromiseConstructor && nativePromiseConstructor.prototype;
-       var PromiseConstructor = nativePromiseConstructor;
-       var PromiseConstructorPrototype = NativePromisePrototype;
-       var TypeError$1 = global$2.TypeError;
-       var document$1 = global$2.document;
-       var process$1 = global$2.process;
-       var newPromiseCapability = newPromiseCapability$1.f;
+
+       var getInternalState$1 = InternalStateModule$4.getterFor(PROMISE);
+       var setInternalState$4 = InternalStateModule$4.set;
+       var getInternalPromiseState = InternalStateModule$4.getterFor(PROMISE);
+       var NativePromisePrototype = NativePromise$1 && NativePromise$1.prototype;
+       var PromiseConstructor = NativePromise$1;
+       var PromisePrototype = NativePromisePrototype;
+       var TypeError$a = global$z.TypeError;
+       var document$1 = global$z.document;
+       var process$1 = global$z.process;
+       var newPromiseCapability = newPromiseCapabilityModule.f;
        var newGenericPromiseCapability = newPromiseCapability;
-       var DISPATCH_EVENT = !!(document$1 && document$1.createEvent && global$2.dispatchEvent);
-       var NATIVE_REJECTION_EVENT = typeof PromiseRejectionEvent == 'function';
+
+       var DISPATCH_EVENT = !!(document$1 && document$1.createEvent && global$z.dispatchEvent);
+       var NATIVE_REJECTION_EVENT = isCallable$7(global$z.PromiseRejectionEvent);
        var UNHANDLED_REJECTION = 'unhandledrejection';
        var REJECTION_HANDLED = 'rejectionhandled';
        var PENDING = 0;
        var HANDLED = 1;
        var UNHANDLED = 2;
        var SUBCLASSING = false;
+
        var Internal, OwnPromiseCapability, PromiseWrapper, nativeThen;
 
-       var FORCED$f = isForced_1(PROMISE, function () {
-         var GLOBAL_CORE_JS_PROMISE = inspectSource(PromiseConstructor) !== String(PromiseConstructor);
+       var FORCED$g = isForced$3(PROMISE, function () {
+         var PROMISE_CONSTRUCTOR_SOURCE = inspectSource(PromiseConstructor);
+         var GLOBAL_CORE_JS_PROMISE = PROMISE_CONSTRUCTOR_SOURCE !== String(PromiseConstructor);
          // 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 && engineV8Version === 66) return true;
+         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
-         if (engineV8Version >= 51 && /native code/.test(PromiseConstructor)) return false;
+         if (V8_VERSION$1 >= 51 && /native code/.test(PROMISE_CONSTRUCTOR_SOURCE)) return false;
          // Detect correctness of subclassing with @@species support
          var promise = new PromiseConstructor(function (resolve) { resolve(1); });
          var FakePromise = function (exec) {
          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 && engineIsBrowser && !NATIVE_REJECTION_EVENT;
+         return !GLOBAL_CORE_JS_PROMISE && IS_BROWSER && !NATIVE_REJECTION_EVENT;
        });
 
-       var INCORRECT_ITERATION$1 = FORCED$f || !checkCorrectnessOfIteration(function (iterable) {
+       var INCORRECT_ITERATION$1 = FORCED$g || !checkCorrectnessOfIteration$3(function (iterable) {
          PromiseConstructor.all(iterable)['catch'](function () { /* empty */ });
        });
 
        // helpers
        var isThenable = function (it) {
          var then;
-         return isObject$4(it) && typeof (then = it.then) == 'function' ? then : false;
+         return isObject$i(it) && isCallable$7(then = it.then) ? then : false;
+       };
+
+       var callReaction = function (reaction, state) {
+         var value = state.value;
+         var ok = state.state == FULFILLED;
+         var handler = ok ? reaction.ok : reaction.fail;
+         var resolve = reaction.resolve;
+         var reject = reaction.reject;
+         var domain = reaction.domain;
+         var result, then, exited;
+         try {
+           if (handler) {
+             if (!ok) {
+               if (state.rejection === UNHANDLED) onHandleUnhandled(state);
+               state.rejection = HANDLED;
+             }
+             if (handler === true) result = value;
+             else {
+               if (domain) domain.enter();
+               result = handler(value); // can throw
+               if (domain) {
+                 domain.exit();
+                 exited = true;
+               }
+             }
+             if (result === reaction.promise) {
+               reject(TypeError$a('Promise-chain cycle'));
+             } else if (then = isThenable(result)) {
+               call$e(then, result, resolve, reject);
+             } else resolve(result);
+           } else reject(value);
+         } catch (error) {
+           if (domain && !exited) domain.exit();
+           reject(error);
+         }
        };
 
        var notify = function (state, isReject) {
          if (state.notified) return;
          state.notified = true;
-         var chain = state.reactions;
          microtask(function () {
-           var value = state.value;
-           var ok = state.state == FULFILLED;
-           var index = 0;
-           // variable length - can't use forEach
-           while (chain.length > index) {
-             var reaction = chain[index++];
-             var handler = ok ? reaction.ok : reaction.fail;
-             var resolve = reaction.resolve;
-             var reject = reaction.reject;
-             var domain = reaction.domain;
-             var result, then, exited;
-             try {
-               if (handler) {
-                 if (!ok) {
-                   if (state.rejection === UNHANDLED) onHandleUnhandled(state);
-                   state.rejection = HANDLED;
-                 }
-                 if (handler === true) result = value;
-                 else {
-                   if (domain) domain.enter();
-                   result = handler(value); // can throw
-                   if (domain) {
-                     domain.exit();
-                     exited = true;
-                   }
-                 }
-                 if (result === reaction.promise) {
-                   reject(TypeError$1('Promise-chain cycle'));
-                 } else if (then = isThenable(result)) {
-                   then.call(result, resolve, reject);
-                 } else resolve(result);
-               } else reject(value);
-             } catch (error) {
-               if (domain && !exited) domain.exit();
-               reject(error);
-             }
+           var reactions = state.reactions;
+           var reaction;
+           while (reaction = reactions.get()) {
+             callReaction(reaction, state);
            }
-           state.reactions = [];
            state.notified = false;
            if (isReject && !state.rejection) onUnhandled(state);
          });
            event.promise = promise;
            event.reason = reason;
            event.initEvent(name, false, true);
-           global$2.dispatchEvent(event);
+           global$z.dispatchEvent(event);
          } else event = { promise: promise, reason: reason };
-         if (!NATIVE_REJECTION_EVENT && (handler = global$2['on' + name])) handler(event);
+         if (!NATIVE_REJECTION_EVENT && (handler = global$z['on' + name])) handler(event);
          else if (name === UNHANDLED_REJECTION) hostReportErrors('Unhandled promise rejection', reason);
        };
 
        var onUnhandled = function (state) {
-         task.call(global$2, function () {
+         call$e(task, global$z, function () {
            var promise = state.facade;
            var value = state.value;
            var IS_UNHANDLED = isUnhandled(state);
            var result;
            if (IS_UNHANDLED) {
              result = perform(function () {
-               if (engineIsNode) {
+               if (IS_NODE$2) {
                  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 = engineIsNode || isUnhandled(state) ? UNHANDLED : HANDLED;
+             state.rejection = IS_NODE$2 || isUnhandled(state) ? UNHANDLED : HANDLED;
              if (result.error) throw result.value;
            }
          });
        };
 
        var onHandleUnhandled = function (state) {
-         task.call(global$2, function () {
+         call$e(task, global$z, function () {
            var promise = state.facade;
-           if (engineIsNode) {
+           if (IS_NODE$2) {
              process$1.emit('rejectionHandled', promise);
            } else dispatchEvent$1(REJECTION_HANDLED, promise, state.value);
          });
        };
 
-       var bind$2 = function (fn, state, unwrap) {
+       var bind$a = function (fn, state, unwrap) {
          return function (value) {
            fn(state, value, unwrap);
          };
          state.done = true;
          if (unwrap) state = unwrap;
          try {
-           if (state.facade === value) throw TypeError$1("Promise can't be resolved itself");
+           if (state.facade === value) throw TypeError$a("Promise can't be resolved itself");
            var then = isThenable(value);
            if (then) {
              microtask(function () {
                var wrapper = { done: false };
                try {
-                 then.call(value,
-                   bind$2(internalResolve, wrapper, state),
-                   bind$2(internalReject, wrapper, state)
+                 call$e(then, value,
+                   bind$a(internalResolve, wrapper, state),
+                   bind$a(internalReject, wrapper, state)
                  );
                } catch (error) {
                  internalReject(wrapper, error, state);
        };
 
        // constructor polyfill
-       if (FORCED$f) {
+       if (FORCED$g) {
          // 25.4.3.1 Promise(executor)
          PromiseConstructor = function Promise(executor) {
-           anInstance(this, PromiseConstructor, PROMISE);
-           aFunction(executor);
-           Internal.call(this);
+           anInstance$5(this, PromisePrototype);
+           aCallable$5(executor);
+           call$e(Internal, this);
            var state = getInternalState$1(this);
            try {
-             executor(bind$2(internalResolve, state), bind$2(internalReject, state));
+             executor(bind$a(internalResolve, state), bind$a(internalReject, state));
            } catch (error) {
              internalReject(state, error);
            }
          };
-         PromiseConstructorPrototype = PromiseConstructor.prototype;
+         PromisePrototype = PromiseConstructor.prototype;
          // eslint-disable-next-line no-unused-vars -- required for `.length`
          Internal = function Promise(executor) {
-           setInternalState$3(this, {
+           setInternalState$4(this, {
              type: PROMISE,
              done: false,
              notified: false,
              parent: false,
-             reactions: [],
+             reactions: new Queue(),
              rejection: false,
              state: PENDING,
              value: undefined
            });
          };
-         Internal.prototype = redefineAll(PromiseConstructorPrototype, {
+         Internal.prototype = redefineAll$2(PromisePrototype, {
            // `Promise.prototype.then` method
            // https://tc39.es/ecma262/#sec-promise.prototype.then
+           // eslint-disable-next-line unicorn/no-thenable -- safe
            then: function then(onFulfilled, onRejected) {
              var state = getInternalPromiseState(this);
-             var reaction = newPromiseCapability(speciesConstructor(this, PromiseConstructor));
-             reaction.ok = typeof onFulfilled == 'function' ? onFulfilled : true;
-             reaction.fail = typeof onRejected == 'function' && onRejected;
-             reaction.domain = engineIsNode ? process$1.domain : undefined;
+             var reaction = newPromiseCapability(speciesConstructor$3(this, PromiseConstructor));
              state.parent = true;
-             state.reactions.push(reaction);
-             if (state.state != PENDING) notify(state, false);
+             reaction.ok = isCallable$7(onFulfilled) ? onFulfilled : true;
+             reaction.fail = isCallable$7(onRejected) && onRejected;
+             reaction.domain = IS_NODE$2 ? process$1.domain : undefined;
+             if (state.state == PENDING) state.reactions.add(reaction);
+             else microtask(function () {
+               callReaction(reaction, state);
+             });
              return reaction.promise;
            },
            // `Promise.prototype.catch` method
            var promise = new Internal();
            var state = getInternalState$1(promise);
            this.promise = promise;
-           this.resolve = bind$2(internalResolve, state);
-           this.reject = bind$2(internalReject, state);
+           this.resolve = bind$a(internalResolve, state);
+           this.reject = bind$a(internalReject, state);
          };
-         newPromiseCapability$1.f = newPromiseCapability = function (C) {
+         newPromiseCapabilityModule.f = newPromiseCapability = function (C) {
            return C === PromiseConstructor || C === PromiseWrapper
              ? new OwnPromiseCapability(C)
              : newGenericPromiseCapability(C);
          };
 
-         if (typeof nativePromiseConstructor == 'function' && NativePromisePrototype !== Object.prototype) {
+         if (isCallable$7(NativePromise$1) && NativePromisePrototype !== Object.prototype) {
            nativeThen = NativePromisePrototype.then;
 
            if (!SUBCLASSING) {
              // make `Promise#then` return a polyfilled `Promise` for native promise-based APIs
-             redefine(NativePromisePrototype, 'then', function then(onFulfilled, onRejected) {
+             redefine$8(NativePromisePrototype, 'then', function then(onFulfilled, onRejected) {
                var that = this;
                return new PromiseConstructor(function (resolve, reject) {
-                 nativeThen.call(that, resolve, reject);
+                 call$e(nativeThen, that, resolve, reject);
                }).then(onFulfilled, onRejected);
              // https://github.com/zloirock/core-js/issues/640
              }, { unsafe: true });
 
              // makes sure that native promise-based APIs `Promise#catch` properly works with patched `Promise#then`
-             redefine(NativePromisePrototype, 'catch', PromiseConstructorPrototype['catch'], { unsafe: true });
+             redefine$8(NativePromisePrototype, 'catch', PromisePrototype['catch'], { unsafe: true });
            }
 
            // make `.constructor === Promise` work for native promise-based APIs
            } catch (error) { /* empty */ }
 
            // make `instanceof Promise` work for native promise-based APIs
-           if (objectSetPrototypeOf) {
-             objectSetPrototypeOf(NativePromisePrototype, PromiseConstructorPrototype);
+           if (setPrototypeOf$3) {
+             setPrototypeOf$3(NativePromisePrototype, PromisePrototype);
            }
          }
        }
 
-       _export({ global: true, wrap: true, forced: FORCED$f }, {
+       $$$({ global: true, wrap: true, forced: FORCED$g }, {
          Promise: PromiseConstructor
        });
 
-       setToStringTag(PromiseConstructor, PROMISE, false);
-       setSpecies(PROMISE);
+       setToStringTag$5(PromiseConstructor, PROMISE, false);
+       setSpecies$3(PROMISE);
 
-       PromiseWrapper = getBuiltIn(PROMISE);
+       PromiseWrapper = getBuiltIn$3(PROMISE);
 
        // statics
-       _export({ target: PROMISE, stat: true, forced: FORCED$f }, {
+       $$$({ target: PROMISE, stat: true, forced: FORCED$g }, {
          // `Promise.reject` method
          // https://tc39.es/ecma262/#sec-promise.reject
          reject: function reject(r) {
            var capability = newPromiseCapability(this);
-           capability.reject.call(undefined, r);
+           call$e(capability.reject, undefined, r);
            return capability.promise;
          }
        });
 
-       _export({ target: PROMISE, stat: true, forced: FORCED$f }, {
+       $$$({ target: PROMISE, stat: true, forced: FORCED$g }, {
          // `Promise.resolve` method
          // https://tc39.es/ecma262/#sec-promise.resolve
          resolve: function resolve(x) {
-           return promiseResolve(this, x);
+           return promiseResolve$1(this, x);
          }
        });
 
-       _export({ target: PROMISE, stat: true, forced: INCORRECT_ITERATION$1 }, {
+       $$$({ target: PROMISE, stat: true, forced: INCORRECT_ITERATION$1 }, {
          // `Promise.all` method
          // https://tc39.es/ecma262/#sec-promise.all
          all: function all(iterable) {
            var resolve = capability.resolve;
            var reject = capability.reject;
            var result = perform(function () {
-             var $promiseResolve = aFunction(C.resolve);
+             var $promiseResolve = aCallable$5(C.resolve);
              var values = [];
              var counter = 0;
              var remaining = 1;
-             iterate(iterable, function (promise) {
+             iterate$2(iterable, function (promise) {
                var index = counter++;
                var alreadyCalled = false;
-               values.push(undefined);
                remaining++;
-               $promiseResolve.call(C, promise).then(function (value) {
+               call$e($promiseResolve, C, promise).then(function (value) {
                  if (alreadyCalled) return;
                  alreadyCalled = true;
                  values[index] = value;
            var capability = newPromiseCapability(C);
            var reject = capability.reject;
            var result = perform(function () {
-             var $promiseResolve = aFunction(C.resolve);
-             iterate(iterable, function (promise) {
-               $promiseResolve.call(C, promise).then(capability.resolve, reject);
+             var $promiseResolve = aCallable$5(C.resolve);
+             iterate$2(iterable, function (promise) {
+               call$e($promiseResolve, C, promise).then(capability.resolve, reject);
              });
            });
            if (result.error) reject(result.value);
          }
        });
 
+       var typedArrayConstructor = {exports: {}};
+
        /* eslint-disable no-new -- required for testing */
 
-       var NATIVE_ARRAY_BUFFER_VIEWS = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;
-
-       var ArrayBuffer$1 = global$2.ArrayBuffer;
-       var Int8Array$2 = global$2.Int8Array;
-
-       var typedArrayConstructorsRequireWrappers = !NATIVE_ARRAY_BUFFER_VIEWS || !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$2(iterable);
-       }, true) || fails(function () {
+       var global$y = global$1o;
+       var fails$A = fails$V;
+       var checkCorrectnessOfIteration$2 = checkCorrectnessOfIteration$4;
+       var NATIVE_ARRAY_BUFFER_VIEWS$1 = arrayBufferViewCore.NATIVE_ARRAY_BUFFER_VIEWS;
+
+       var ArrayBuffer$2 = global$y.ArrayBuffer;
+       var Int8Array$3 = global$y.Int8Array;
+
+       var typedArrayConstructorsRequireWrappers = !NATIVE_ARRAY_BUFFER_VIEWS$1 || !fails$A(function () {
+         Int8Array$3(1);
+       }) || !fails$A(function () {
+         new Int8Array$3(-1);
+       }) || !checkCorrectnessOfIteration$2(function (iterable) {
+         new Int8Array$3();
+         new Int8Array$3(null);
+         new Int8Array$3(1.5);
+         new Int8Array$3(iterable);
+       }, true) || fails$A(function () {
          // Safari (11+) bug - a reason why even Safari 13 should load a typed array polyfill
-         return new Int8Array$2(new ArrayBuffer$1(2), 1, undefined).length !== 1;
+         return new Int8Array$3(new ArrayBuffer$2(2), 1, undefined).length !== 1;
        });
 
-       var toPositiveInteger = function (it) {
-         var result = toInteger(it);
-         if (result < 0) throw RangeError("The argument can't be less than 0");
+       var isObject$h = isObject$s;
+
+       var floor$6 = Math.floor;
+
+       // `IsIntegralNumber` abstract operation
+       // https://tc39.es/ecma262/#sec-isintegralnumber
+       // eslint-disable-next-line es/no-number-isinteger -- safe
+       var isIntegralNumber$1 = Number.isInteger || function isInteger(it) {
+         return !isObject$h(it) && isFinite(it) && floor$6(it) === it;
+       };
+
+       var global$x = global$1o;
+       var toIntegerOrInfinity$5 = toIntegerOrInfinity$b;
+
+       var RangeError$9 = global$x.RangeError;
+
+       var toPositiveInteger$1 = function (it) {
+         var result = toIntegerOrInfinity$5(it);
+         if (result < 0) throw RangeError$9("The argument can't be less than 0");
          return result;
        };
 
-       var toOffset = function (it, BYTES) {
+       var global$w = global$1o;
+       var toPositiveInteger = toPositiveInteger$1;
+
+       var RangeError$8 = global$w.RangeError;
+
+       var toOffset$2 = function (it, BYTES) {
          var offset = toPositiveInteger(it);
-         if (offset % BYTES) throw RangeError('Wrong offset');
+         if (offset % BYTES) throw RangeError$8('Wrong offset');
          return offset;
        };
 
-       var aTypedArrayConstructor$3 = arrayBufferViewCore.aTypedArrayConstructor;
+       var bind$9 = functionBindContext;
+       var call$d = functionCall;
+       var aConstructor$1 = aConstructor$3;
+       var toObject$c = toObject$i;
+       var lengthOfArrayLike$c = lengthOfArrayLike$i;
+       var getIterator$2 = getIterator$4;
+       var getIteratorMethod$2 = getIteratorMethod$5;
+       var isArrayIteratorMethod$1 = isArrayIteratorMethod$3;
+       var aTypedArrayConstructor$2 = arrayBufferViewCore.aTypedArrayConstructor;
 
-       var typedArrayFrom = function from(source /* , mapfn, thisArg */) {
-         var O = toObject(source);
+       var typedArrayFrom$2 = function from(source /* , mapfn, thisArg */) {
+         var C = aConstructor$1(this);
+         var O = toObject$c(source);
          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 i, length, result, step, iterator, next;
-         if (iteratorMethod != undefined && !isArrayIteratorMethod(iteratorMethod)) {
-           iterator = iteratorMethod.call(O);
+         if (iteratorMethod && !isArrayIteratorMethod$1(iteratorMethod)) {
+           iterator = getIterator$2(O, iteratorMethod);
            next = iterator.next;
            O = [];
-           while (!(step = next.call(iterator)).done) {
+           while (!(step = call$d(next, iterator)).done) {
              O.push(step.value);
            }
          }
          if (mapping && argumentsLength > 2) {
-           mapfn = functionBindContext(mapfn, arguments[2], 2);
+           mapfn = bind$9(mapfn, arguments[2]);
          }
-         length = toLength(O.length);
-         result = new (aTypedArrayConstructor$3(this))(length);
+         length = lengthOfArrayLike$c(O);
+         result = new (aTypedArrayConstructor$2(C))(length);
          for (i = 0; length > i; i++) {
            result[i] = mapping ? mapfn(O[i], i) : O[i];
          }
          return result;
        };
 
+       var isCallable$6 = isCallable$r;
+       var isObject$g = isObject$s;
+       var setPrototypeOf$2 = objectSetPrototypeOf;
+
        // makes subclassing work correct for wrapped built-ins
-       var inheritIfRequired = function ($this, dummy, Wrapper) {
+       var inheritIfRequired$4 = function ($this, dummy, Wrapper) {
          var NewTarget, NewTargetPrototype;
          if (
            // it can work only with native `setPrototypeOf`
-           objectSetPrototypeOf &&
+           setPrototypeOf$2 &&
            // we haven't completely correct pre-ES6 way for getting `new.target`, so use this
-           typeof (NewTarget = dummy.constructor) == 'function' &&
+           isCallable$6(NewTarget = dummy.constructor) &&
            NewTarget !== Wrapper &&
-           isObject$4(NewTargetPrototype = NewTarget.prototype) &&
+           isObject$g(NewTargetPrototype = NewTarget.prototype) &&
            NewTargetPrototype !== Wrapper.prototype
-         ) objectSetPrototypeOf($this, NewTargetPrototype);
+         ) setPrototypeOf$2($this, NewTargetPrototype);
          return $this;
        };
 
-       var typedArrayConstructor = createCommonjsModule(function (module) {
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-       var getOwnPropertyNames = objectGetOwnPropertyNames.f;
-
-       var forEach = arrayIteration.forEach;
-
-
-
-
-
-
-       var getInternalState = internalState.get;
-       var setInternalState = internalState.set;
-       var nativeDefineProperty = objectDefineProperty.f;
-       var nativeGetOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
+       var $$_ = _export;
+       var global$v = global$1o;
+       var call$c = functionCall;
+       var DESCRIPTORS$c = descriptors;
+       var TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS$1 = typedArrayConstructorsRequireWrappers;
+       var ArrayBufferViewCore$n = arrayBufferViewCore;
+       var ArrayBufferModule = arrayBuffer;
+       var anInstance$4 = anInstance$7;
+       var createPropertyDescriptor$1 = createPropertyDescriptor$7;
+       var createNonEnumerableProperty$2 = createNonEnumerableProperty$b;
+       var isIntegralNumber = isIntegralNumber$1;
+       var toLength$7 = toLength$c;
+       var toIndex = toIndex$2;
+       var toOffset$1 = toOffset$2;
+       var toPropertyKey = toPropertyKey$5;
+       var hasOwn$7 = hasOwnProperty_1;
+       var classof$4 = classof$d;
+       var isObject$f = isObject$s;
+       var isSymbol$2 = isSymbol$6;
+       var create$7 = objectCreate;
+       var isPrototypeOf$3 = objectIsPrototypeOf;
+       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 = objectDefineProperty;
+       var getOwnPropertyDescriptorModule$1 = objectGetOwnPropertyDescriptor;
+       var InternalStateModule$3 = internalState;
+       var inheritIfRequired$3 = inheritIfRequired$4;
+
+       var getInternalState = InternalStateModule$3.get;
+       var setInternalState$3 = InternalStateModule$3.set;
+       var nativeDefineProperty = definePropertyModule.f;
+       var nativeGetOwnPropertyDescriptor$1 = getOwnPropertyDescriptorModule$1.f;
        var round = Math.round;
-       var RangeError = global$2.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 RangeError$7 = global$v.RangeError;
+       var ArrayBuffer$1 = ArrayBufferModule.ArrayBuffer;
+       var ArrayBufferPrototype = ArrayBuffer$1.prototype;
+       var DataView$1 = ArrayBufferModule.DataView;
+       var NATIVE_ARRAY_BUFFER_VIEWS = ArrayBufferViewCore$n.NATIVE_ARRAY_BUFFER_VIEWS;
+       var TYPED_ARRAY_CONSTRUCTOR$1 = ArrayBufferViewCore$n.TYPED_ARRAY_CONSTRUCTOR;
+       var TYPED_ARRAY_TAG = ArrayBufferViewCore$n.TYPED_ARRAY_TAG;
+       var TypedArray = ArrayBufferViewCore$n.TypedArray;
+       var TypedArrayPrototype$1 = ArrayBufferViewCore$n.TypedArrayPrototype;
+       var aTypedArrayConstructor$1 = ArrayBufferViewCore$n.aTypedArrayConstructor;
+       var isTypedArray = ArrayBufferViewCore$n.isTypedArray;
        var BYTES_PER_ELEMENT = 'BYTES_PER_ELEMENT';
        var WRONG_LENGTH = 'Wrong length';
 
        var fromList = function (C, list) {
+         aTypedArrayConstructor$1(C);
          var index = 0;
          var length = list.length;
-         var result = new (aTypedArrayConstructor(C))(length);
+         var result = new C(length);
          while (length > index) result[index] = list[index++];
          return result;
        };
 
        var isArrayBuffer = function (it) {
          var klass;
-         return it instanceof ArrayBuffer || (klass = classof(it)) == 'ArrayBuffer' || klass == 'SharedArrayBuffer';
+         return isPrototypeOf$3(ArrayBufferPrototype, it) || (klass = classof$4(it)) == 'ArrayBuffer' || klass == 'SharedArrayBuffer';
        };
 
        var isTypedArrayIndex = function (target, key) {
          return isTypedArray(target)
-           && typeof key != 'symbol'
+           && !isSymbol$2(key)
            && key in target
-           && String(+key) == String(key);
+           && isIntegralNumber(+key)
+           && key >= 0;
        };
 
        var wrappedGetOwnPropertyDescriptor = function getOwnPropertyDescriptor(target, key) {
-         return isTypedArrayIndex(target, key = toPrimitive(key, true))
-           ? createPropertyDescriptor(2, target[key])
-           : nativeGetOwnPropertyDescriptor(target, key);
+         key = toPropertyKey(key);
+         return isTypedArrayIndex(target, key)
+           ? createPropertyDescriptor$1(2, target[key])
+           : nativeGetOwnPropertyDescriptor$1(target, key);
        };
 
        var wrappedDefineProperty = function defineProperty(target, key, descriptor) {
-         if (isTypedArrayIndex(target, key = toPrimitive(key, true))
-           && isObject$4(descriptor)
-           && has$1(descriptor, 'value')
-           && !has$1(descriptor, 'get')
-           && !has$1(descriptor, 'set')
+         key = toPropertyKey(key);
+         if (isTypedArrayIndex(target, key)
+           && isObject$f(descriptor)
+           && hasOwn$7(descriptor, 'value')
+           && !hasOwn$7(descriptor, 'get')
+           && !hasOwn$7(descriptor, 'set')
            // TODO: add validation descriptor w/o calling accessors
            && !descriptor.configurable
-           && (!has$1(descriptor, 'writable') || descriptor.writable)
-           && (!has$1(descriptor, 'enumerable') || descriptor.enumerable)
+           && (!hasOwn$7(descriptor, 'writable') || descriptor.writable)
+           && (!hasOwn$7(descriptor, 'enumerable') || descriptor.enumerable)
          ) {
            target[key] = descriptor.value;
            return target;
          } return nativeDefineProperty(target, key, descriptor);
        };
 
-       if (descriptors) {
+       if (DESCRIPTORS$c) {
          if (!NATIVE_ARRAY_BUFFER_VIEWS) {
-           objectGetOwnPropertyDescriptor.f = wrappedGetOwnPropertyDescriptor;
-           objectDefineProperty.f = wrappedDefineProperty;
-           addGetter(TypedArrayPrototype, 'buffer');
-           addGetter(TypedArrayPrototype, 'byteOffset');
-           addGetter(TypedArrayPrototype, 'byteLength');
-           addGetter(TypedArrayPrototype, 'length');
+           getOwnPropertyDescriptorModule$1.f = wrappedGetOwnPropertyDescriptor;
+           definePropertyModule.f = wrappedDefineProperty;
+           addGetter(TypedArrayPrototype$1, 'buffer');
+           addGetter(TypedArrayPrototype$1, 'byteOffset');
+           addGetter(TypedArrayPrototype$1, 'byteLength');
+           addGetter(TypedArrayPrototype$1, 'length');
          }
 
-         _export({ target: 'Object', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS }, {
+         $$_({ target: 'Object', stat: true, forced: !NATIVE_ARRAY_BUFFER_VIEWS }, {
            getOwnPropertyDescriptor: wrappedGetOwnPropertyDescriptor,
            defineProperty: wrappedDefineProperty
          });
 
-         module.exports = function (TYPE, wrapper, CLAMPED) {
+         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$2[CONSTRUCTOR_NAME];
+           var NativeTypedArrayConstructor = global$v[CONSTRUCTOR_NAME];
            var TypedArrayConstructor = NativeTypedArrayConstructor;
            var TypedArrayConstructorPrototype = TypedArrayConstructor && TypedArrayConstructor.prototype;
            var exported = {};
 
            if (!NATIVE_ARRAY_BUFFER_VIEWS) {
              TypedArrayConstructor = wrapper(function (that, data, offset, $length) {
-               anInstance(that, TypedArrayConstructor, CONSTRUCTOR_NAME);
+               anInstance$4(that, TypedArrayConstructorPrototype);
                var index = 0;
                var byteOffset = 0;
                var buffer, byteLength, length;
-               if (!isObject$4(data)) {
+               if (!isObject$f(data)) {
                  length = toIndex(data);
                  byteLength = length * BYTES;
-                 buffer = new ArrayBuffer(byteLength);
+                 buffer = new ArrayBuffer$1(byteLength);
                } else if (isArrayBuffer(data)) {
                  buffer = data;
-                 byteOffset = toOffset(offset, BYTES);
+                 byteOffset = toOffset$1(offset, BYTES);
                  var $len = data.byteLength;
                  if ($length === undefined) {
-                   if ($len % BYTES) throw RangeError(WRONG_LENGTH);
+                   if ($len % BYTES) throw RangeError$7(WRONG_LENGTH);
                    byteLength = $len - byteOffset;
-                   if (byteLength < 0) throw RangeError(WRONG_LENGTH);
+                   if (byteLength < 0) throw RangeError$7(WRONG_LENGTH);
                  } else {
-                   byteLength = toLength($length) * BYTES;
-                   if (byteLength + byteOffset > $len) throw RangeError(WRONG_LENGTH);
+                   byteLength = toLength$7($length) * BYTES;
+                   if (byteLength + byteOffset > $len) throw RangeError$7(WRONG_LENGTH);
                  }
                  length = byteLength / BYTES;
                } else if (isTypedArray(data)) {
                  return fromList(TypedArrayConstructor, data);
                } else {
-                 return typedArrayFrom.call(TypedArrayConstructor, data);
+                 return call$c(typedArrayFrom$1, TypedArrayConstructor, data);
                }
-               setInternalState(that, {
+               setInternalState$3(that, {
                  buffer: buffer,
                  byteOffset: byteOffset,
                  byteLength: byteLength,
                  length: length,
-                 view: new DataView(buffer)
+                 view: new DataView$1(buffer)
                });
                while (index < length) addElement(that, index++);
              });
 
-             if (objectSetPrototypeOf) objectSetPrototypeOf(TypedArrayConstructor, TypedArray);
-             TypedArrayConstructorPrototype = TypedArrayConstructor.prototype = objectCreate(TypedArrayPrototype);
-           } else if (typedArrayConstructorsRequireWrappers) {
+             if (setPrototypeOf$1) setPrototypeOf$1(TypedArrayConstructor, TypedArray);
+             TypedArrayConstructorPrototype = TypedArrayConstructor.prototype = create$7(TypedArrayPrototype$1);
+           } else if (TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS$1) {
              TypedArrayConstructor = wrapper(function (dummy, data, typedArrayOffset, $length) {
-               anInstance(dummy, TypedArrayConstructor, CONSTRUCTOR_NAME);
-               return inheritIfRequired(function () {
-                 if (!isObject$4(data)) return new NativeTypedArrayConstructor(toIndex(data));
+               anInstance$4(dummy, TypedArrayConstructorPrototype);
+               return inheritIfRequired$3(function () {
+                 if (!isObject$f(data)) return new NativeTypedArrayConstructor(toIndex(data));
                  if (isArrayBuffer(data)) return $length !== undefined
-                   ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES), $length)
+                   ? new NativeTypedArrayConstructor(data, toOffset$1(typedArrayOffset, BYTES), $length)
                    : typedArrayOffset !== undefined
-                     ? new NativeTypedArrayConstructor(data, toOffset(typedArrayOffset, BYTES))
+                     ? new NativeTypedArrayConstructor(data, toOffset$1(typedArrayOffset, BYTES))
                      : new NativeTypedArrayConstructor(data);
                  if (isTypedArray(data)) return fromList(TypedArrayConstructor, data);
-                 return typedArrayFrom.call(TypedArrayConstructor, data);
+                 return call$c(typedArrayFrom$1, TypedArrayConstructor, data);
                }(), dummy, TypedArrayConstructor);
              });
 
-             if (objectSetPrototypeOf) objectSetPrototypeOf(TypedArrayConstructor, TypedArray);
-             forEach(getOwnPropertyNames(NativeTypedArrayConstructor), function (key) {
+             if (setPrototypeOf$1) setPrototypeOf$1(TypedArrayConstructor, TypedArray);
+             forEach$1(getOwnPropertyNames$2(NativeTypedArrayConstructor), function (key) {
                if (!(key in TypedArrayConstructor)) {
-                 createNonEnumerableProperty(TypedArrayConstructor, key, NativeTypedArrayConstructor[key]);
+                 createNonEnumerableProperty$2(TypedArrayConstructor, key, NativeTypedArrayConstructor[key]);
                }
              });
              TypedArrayConstructor.prototype = TypedArrayConstructorPrototype;
            }
 
            if (TypedArrayConstructorPrototype.constructor !== TypedArrayConstructor) {
-             createNonEnumerableProperty(TypedArrayConstructorPrototype, 'constructor', TypedArrayConstructor);
+             createNonEnumerableProperty$2(TypedArrayConstructorPrototype, 'constructor', TypedArrayConstructor);
            }
 
+           createNonEnumerableProperty$2(TypedArrayConstructorPrototype, TYPED_ARRAY_CONSTRUCTOR$1, TypedArrayConstructor);
+
            if (TYPED_ARRAY_TAG) {
-             createNonEnumerableProperty(TypedArrayConstructorPrototype, TYPED_ARRAY_TAG, CONSTRUCTOR_NAME);
+             createNonEnumerableProperty$2(TypedArrayConstructorPrototype, TYPED_ARRAY_TAG, CONSTRUCTOR_NAME);
            }
 
            exported[CONSTRUCTOR_NAME] = TypedArrayConstructor;
 
-           _export({
+           $$_({
              global: true, forced: TypedArrayConstructor != NativeTypedArrayConstructor, sham: !NATIVE_ARRAY_BUFFER_VIEWS
            }, exported);
 
            if (!(BYTES_PER_ELEMENT in TypedArrayConstructor)) {
-             createNonEnumerableProperty(TypedArrayConstructor, BYTES_PER_ELEMENT, BYTES);
+             createNonEnumerableProperty$2(TypedArrayConstructor, BYTES_PER_ELEMENT, BYTES);
            }
 
            if (!(BYTES_PER_ELEMENT in TypedArrayConstructorPrototype)) {
-             createNonEnumerableProperty(TypedArrayConstructorPrototype, BYTES_PER_ELEMENT, BYTES);
+             createNonEnumerableProperty$2(TypedArrayConstructorPrototype, BYTES_PER_ELEMENT, BYTES);
            }
 
-           setSpecies(CONSTRUCTOR_NAME);
+           setSpecies$2(CONSTRUCTOR_NAME);
          };
-       } else module.exports = function () { /* empty */ };
-       });
+       } else typedArrayConstructor.exports = function () { /* empty */ };
+
+       var createTypedArrayConstructor$1 = typedArrayConstructor.exports;
 
        // `Uint8Array` constructor
        // https://tc39.es/ecma262/#sec-typedarray-objects
-       typedArrayConstructor('Uint8', function (init) {
+       createTypedArrayConstructor$1('Uint8', function (init) {
          return function Uint8Array(data, byteOffset, length) {
            return init(this, data, byteOffset, length);
          };
        });
 
+       var toObject$b = toObject$i;
+       var toAbsoluteIndex$4 = toAbsoluteIndex$9;
+       var lengthOfArrayLike$b = lengthOfArrayLike$i;
+
        var min$7 = Math.min;
 
        // `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(this);
-         var len = toLength(O.length);
-         var to = toAbsoluteIndex(target, len);
-         var from = toAbsoluteIndex(start, len);
+         var O = toObject$b(this);
+         var len = lengthOfArrayLike$b(O);
+         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(end, len)) - from, len - to);
+         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;
          } return O;
        };
 
-       var aTypedArray$l = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$m = arrayBufferViewCore.exportTypedArrayMethod;
+       var uncurryThis$A = functionUncurryThis;
+       var ArrayBufferViewCore$m = arrayBufferViewCore;
+       var $ArrayCopyWithin = arrayCopyWithin;
+
+       var u$ArrayCopyWithin = uncurryThis$A($ArrayCopyWithin);
+       var aTypedArray$l = ArrayBufferViewCore$m.aTypedArray;
+       var exportTypedArrayMethod$m = ArrayBufferViewCore$m.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.copyWithin` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.copywithin
        exportTypedArrayMethod$m('copyWithin', function copyWithin(target, start /* , end */) {
-         return arrayCopyWithin.call(aTypedArray$l(this), target, start, arguments.length > 2 ? arguments[2] : undefined);
+         return u$ArrayCopyWithin(aTypedArray$l(this), target, start, arguments.length > 2 ? arguments[2] : undefined);
        });
 
+       var ArrayBufferViewCore$l = arrayBufferViewCore;
        var $every$1 = arrayIteration.every;
 
-       var aTypedArray$k = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$l = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$k = ArrayBufferViewCore$l.aTypedArray;
+       var exportTypedArrayMethod$l = ArrayBufferViewCore$l.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.every` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.every
          return $every$1(aTypedArray$k(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
        });
 
-       var aTypedArray$j = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$k = arrayBufferViewCore.exportTypedArrayMethod;
+       var ArrayBufferViewCore$k = arrayBufferViewCore;
+       var call$b = functionCall;
+       var $fill = arrayFill$1;
+
+       var aTypedArray$j = ArrayBufferViewCore$k.aTypedArray;
+       var exportTypedArrayMethod$k = ArrayBufferViewCore$k.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.fill` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.fill
-       // eslint-disable-next-line no-unused-vars -- required for `.length`
        exportTypedArrayMethod$k('fill', function fill(value /* , start, end */) {
-         return arrayFill.apply(aTypedArray$j(this), arguments);
+         var length = arguments.length;
+         return call$b(
+           $fill,
+           aTypedArray$j(this),
+           value,
+           length > 1 ? arguments[1] : undefined,
+           length > 2 ? arguments[2] : undefined
+         );
        });
 
-       var aTypedArrayConstructor$2 = arrayBufferViewCore.aTypedArrayConstructor;
-
+       var lengthOfArrayLike$a = lengthOfArrayLike$i;
 
-       var typedArrayFromSpeciesAndList = function (instance, list) {
-         var C = speciesConstructor(instance, instance.constructor);
+       var arrayFromConstructorAndList$1 = function (Constructor, list) {
          var index = 0;
-         var length = list.length;
-         var result = new (aTypedArrayConstructor$2(C))(length);
+         var length = lengthOfArrayLike$a(list);
+         var result = new Constructor(length);
          while (length > index) result[index] = list[index++];
          return result;
        };
 
-       var $filter$1 = arrayIteration.filter;
+       var ArrayBufferViewCore$j = arrayBufferViewCore;
+       var speciesConstructor$2 = speciesConstructor$5;
+
+       var TYPED_ARRAY_CONSTRUCTOR = ArrayBufferViewCore$j.TYPED_ARRAY_CONSTRUCTOR;
+       var aTypedArrayConstructor = ArrayBufferViewCore$j.aTypedArrayConstructor;
 
+       // a part of `TypedArraySpeciesCreate` abstract operation
+       // https://tc39.es/ecma262/#typedarray-species-create
+       var typedArraySpeciesConstructor$4 = function (originalArray) {
+         return aTypedArrayConstructor(speciesConstructor$2(originalArray, originalArray[TYPED_ARRAY_CONSTRUCTOR]));
+       };
 
-       var aTypedArray$i = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$j = arrayBufferViewCore.exportTypedArrayMethod;
+       var arrayFromConstructorAndList = arrayFromConstructorAndList$1;
+       var typedArraySpeciesConstructor$3 = typedArraySpeciesConstructor$4;
+
+       var typedArrayFromSpeciesAndList = function (instance, list) {
+         return arrayFromConstructorAndList(typedArraySpeciesConstructor$3(instance), list);
+       };
+
+       var ArrayBufferViewCore$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 typedArrayFromSpeciesAndList(this, list);
+         return fromSpeciesAndList(this, list);
        });
 
+       var ArrayBufferViewCore$h = arrayBufferViewCore;
        var $find$1 = arrayIteration.find;
 
-       var aTypedArray$h = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$i = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$h = ArrayBufferViewCore$h.aTypedArray;
+       var exportTypedArrayMethod$i = ArrayBufferViewCore$h.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.find` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.find
          return $find$1(aTypedArray$h(this), predicate, arguments.length > 1 ? arguments[1] : undefined);
        });
 
+       var ArrayBufferViewCore$g = arrayBufferViewCore;
        var $findIndex$1 = arrayIteration.findIndex;
 
-       var aTypedArray$g = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$h = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$g = ArrayBufferViewCore$g.aTypedArray;
+       var exportTypedArrayMethod$h = ArrayBufferViewCore$g.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.findIndex` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.findindex
          return $findIndex$1(aTypedArray$g(this), predicate, arguments.length > 1 ? arguments[1] : undefined);
        });
 
+       var ArrayBufferViewCore$f = arrayBufferViewCore;
        var $forEach = arrayIteration.forEach;
 
-       var aTypedArray$f = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$g = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$f = ArrayBufferViewCore$f.aTypedArray;
+       var exportTypedArrayMethod$g = ArrayBufferViewCore$f.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.forEach` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.foreach
          $forEach(aTypedArray$f(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
        });
 
+       var ArrayBufferViewCore$e = arrayBufferViewCore;
        var $includes$1 = arrayIncludes.includes;
 
-       var aTypedArray$e = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$f = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$e = ArrayBufferViewCore$e.aTypedArray;
+       var exportTypedArrayMethod$f = ArrayBufferViewCore$e.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.includes` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.includes
          return $includes$1(aTypedArray$e(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);
        });
 
+       var ArrayBufferViewCore$d = arrayBufferViewCore;
        var $indexOf = arrayIncludes.indexOf;
 
-       var aTypedArray$d = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$e = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$d = ArrayBufferViewCore$d.aTypedArray;
+       var exportTypedArrayMethod$e = ArrayBufferViewCore$d.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.indexOf` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.indexof
          return $indexOf(aTypedArray$d(this), searchElement, arguments.length > 1 ? arguments[1] : undefined);
        });
 
-       var ITERATOR$2 = wellKnownSymbol('iterator');
-       var Uint8Array$2 = global$2.Uint8Array;
-       var arrayValues = es_array_iterator.values;
-       var arrayKeys = es_array_iterator.keys;
-       var arrayEntries = es_array_iterator.entries;
-       var aTypedArray$c = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$d = arrayBufferViewCore.exportTypedArrayMethod;
-       var nativeTypedArrayIterator = Uint8Array$2 && Uint8Array$2.prototype[ITERATOR$2];
+       var global$u = global$1o;
+       var fails$z = fails$V;
+       var uncurryThis$z = functionUncurryThis;
+       var ArrayBufferViewCore$c = arrayBufferViewCore;
+       var ArrayIterators = es_array_iterator;
+       var wellKnownSymbol$9 = wellKnownSymbol$t;
+
+       var ITERATOR$4 = wellKnownSymbol$9('iterator');
+       var Uint8Array$2 = global$u.Uint8Array;
+       var arrayValues = uncurryThis$z(ArrayIterators.values);
+       var arrayKeys = uncurryThis$z(ArrayIterators.keys);
+       var arrayEntries = uncurryThis$z(ArrayIterators.entries);
+       var aTypedArray$c = ArrayBufferViewCore$c.aTypedArray;
+       var exportTypedArrayMethod$d = ArrayBufferViewCore$c.exportTypedArrayMethod;
+       var TypedArrayPrototype = Uint8Array$2 && Uint8Array$2.prototype;
+
+       var GENERIC = !fails$z(function () {
+         TypedArrayPrototype[ITERATOR$4].call([1]);
+       });
 
-       var CORRECT_ITER_NAME = !!nativeTypedArrayIterator
-         && (nativeTypedArrayIterator.name == 'values' || nativeTypedArrayIterator.name == undefined);
+       var ITERATOR_IS_VALUES = !!TypedArrayPrototype
+         && TypedArrayPrototype.values
+         && TypedArrayPrototype[ITERATOR$4] === TypedArrayPrototype.values
+         && TypedArrayPrototype.values.name === 'values';
 
        var typedArrayValues = function values() {
-         return arrayValues.call(aTypedArray$c(this));
+         return arrayValues(aTypedArray$c(this));
        };
 
        // `%TypedArray%.prototype.entries` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.entries
        exportTypedArrayMethod$d('entries', function entries() {
-         return arrayEntries.call(aTypedArray$c(this));
-       });
+         return arrayEntries(aTypedArray$c(this));
+       }, GENERIC);
        // `%TypedArray%.prototype.keys` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.keys
        exportTypedArrayMethod$d('keys', function keys() {
-         return arrayKeys.call(aTypedArray$c(this));
-       });
+         return arrayKeys(aTypedArray$c(this));
+       }, GENERIC);
        // `%TypedArray%.prototype.values` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.values
-       exportTypedArrayMethod$d('values', typedArrayValues, !CORRECT_ITER_NAME);
+       exportTypedArrayMethod$d('values', typedArrayValues, GENERIC || !ITERATOR_IS_VALUES, { name: 'values' });
        // `%TypedArray%.prototype[@@iterator]` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype-@@iterator
-       exportTypedArrayMethod$d(ITERATOR$2, typedArrayValues, !CORRECT_ITER_NAME);
+       exportTypedArrayMethod$d(ITERATOR$4, typedArrayValues, GENERIC || !ITERATOR_IS_VALUES, { name: 'values' });
+
+       var ArrayBufferViewCore$b = arrayBufferViewCore;
+       var uncurryThis$y = functionUncurryThis;
 
-       var aTypedArray$b = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$c = arrayBufferViewCore.exportTypedArrayMethod;
-       var $join = [].join;
+       var aTypedArray$b = ArrayBufferViewCore$b.aTypedArray;
+       var exportTypedArrayMethod$c = ArrayBufferViewCore$b.exportTypedArrayMethod;
+       var $join = uncurryThis$y([].join);
 
        // `%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);
+         return $join(aTypedArray$b(this), separator);
        });
 
        /* eslint-disable es/no-array-prototype-lastindexof -- safe */
-
-
-
-
+       var apply$6 = functionApply;
+       var toIndexedObject$5 = toIndexedObject$d;
+       var toIntegerOrInfinity$4 = toIntegerOrInfinity$b;
+       var lengthOfArrayLike$9 = lengthOfArrayLike$i;
+       var arrayMethodIsStrict$6 = arrayMethodIsStrict$9;
 
        var min$6 = Math.min;
-       var $lastIndexOf = [].lastIndexOf;
-       var NEGATIVE_ZERO = !!$lastIndexOf && 1 / [1].lastIndexOf(1, -0) < 0;
-       var STRICT_METHOD$5 = arrayMethodIsStrict('lastIndexOf');
-       var FORCED$e = NEGATIVE_ZERO || !STRICT_METHOD$5;
+       var $lastIndexOf$1 = [].lastIndexOf;
+       var NEGATIVE_ZERO = !!$lastIndexOf$1 && 1 / [1].lastIndexOf(1, -0) < 0;
+       var STRICT_METHOD$6 = arrayMethodIsStrict$6('lastIndexOf');
+       var FORCED$f = NEGATIVE_ZERO || !STRICT_METHOD$6;
 
        // `Array.prototype.lastIndexOf` method implementation
        // https://tc39.es/ecma262/#sec-array.prototype.lastindexof
-       var arrayLastIndexOf = FORCED$e ? function lastIndexOf(searchElement /* , fromIndex = @[*-1] */) {
+       var arrayLastIndexOf = FORCED$f ? function lastIndexOf(searchElement /* , fromIndex = @[*-1] */) {
          // convert -0 to +0
-         if (NEGATIVE_ZERO) return $lastIndexOf.apply(this, arguments) || 0;
-         var O = toIndexedObject(this);
-         var length = toLength(O.length);
+         if (NEGATIVE_ZERO) return apply$6($lastIndexOf$1, this, arguments) || 0;
+         var O = toIndexedObject$5(this);
+         var length = lengthOfArrayLike$9(O);
          var index = length - 1;
-         if (arguments.length > 1) index = min$6(index, toInteger(arguments[1]));
+         if (arguments.length > 1) index = min$6(index, toIntegerOrInfinity$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;
+       } : $lastIndexOf$1;
 
-       var aTypedArray$a = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$b = arrayBufferViewCore.exportTypedArrayMethod;
+       var ArrayBufferViewCore$a = arrayBufferViewCore;
+       var apply$5 = functionApply;
+       var $lastIndexOf = arrayLastIndexOf;
+
+       var aTypedArray$a = ArrayBufferViewCore$a.aTypedArray;
+       var exportTypedArrayMethod$b = ArrayBufferViewCore$a.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.lastIndexOf` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.lastindexof
-       // eslint-disable-next-line no-unused-vars -- required for `.length`
        exportTypedArrayMethod$b('lastIndexOf', function lastIndexOf(searchElement /* , fromIndex */) {
-         return arrayLastIndexOf.apply(aTypedArray$a(this), arguments);
+         var length = arguments.length;
+         return apply$5($lastIndexOf, aTypedArray$a(this), length > 1 ? [searchElement, arguments[1]] : [searchElement]);
        });
 
+       var ArrayBufferViewCore$9 = arrayBufferViewCore;
        var $map = arrayIteration.map;
+       var typedArraySpeciesConstructor$2 = typedArraySpeciesConstructor$4;
 
-
-       var aTypedArray$9 = arrayBufferViewCore.aTypedArray;
-       var aTypedArrayConstructor$1 = arrayBufferViewCore.aTypedArrayConstructor;
-       var exportTypedArrayMethod$a = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$9 = ArrayBufferViewCore$9.aTypedArray;
+       var exportTypedArrayMethod$a = ArrayBufferViewCore$9.exportTypedArrayMethod;
 
        // `%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(O, O.constructor)))(length);
+           return new (typedArraySpeciesConstructor$2(O))(length);
          });
        });
 
+       var global$t = global$1o;
+       var aCallable$4 = aCallable$a;
+       var toObject$a = toObject$i;
+       var IndexedObject$2 = indexedObject;
+       var lengthOfArrayLike$8 = lengthOfArrayLike$i;
+
+       var TypeError$9 = global$t.TypeError;
+
        // `Array.prototype.{ reduce, reduceRight }` methods implementation
        var createMethod$3 = function (IS_RIGHT) {
          return function (that, callbackfn, argumentsLength, memo) {
-           aFunction(callbackfn);
-           var O = toObject(that);
-           var self = indexedObject(O);
-           var length = toLength(O.length);
+           aCallable$4(callbackfn);
+           var O = toObject$a(that);
+           var self = IndexedObject$2(O);
+           var length = lengthOfArrayLike$8(O);
            var index = IS_RIGHT ? length - 1 : 0;
            var i = IS_RIGHT ? -1 : 1;
            if (argumentsLength < 2) while (true) {
              }
              index += i;
              if (IS_RIGHT ? index < 0 : length <= index) {
-               throw TypeError('Reduce of empty array with no initial value');
+               throw TypeError$9('Reduce of empty array with no initial value');
              }
            }
            for (;IS_RIGHT ? index >= 0 : length > index; index += i) if (index in self) {
          right: createMethod$3(true)
        };
 
+       var ArrayBufferViewCore$8 = arrayBufferViewCore;
        var $reduce$1 = arrayReduce.left;
 
-       var aTypedArray$8 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$9 = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$8 = ArrayBufferViewCore$8.aTypedArray;
+       var exportTypedArrayMethod$9 = ArrayBufferViewCore$8.exportTypedArrayMethod;
 
        // `%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);
+         var length = arguments.length;
+         return $reduce$1(aTypedArray$8(this), callbackfn, length, length > 1 ? arguments[1] : undefined);
        });
 
-       var $reduceRight = arrayReduce.right;
+       var ArrayBufferViewCore$7 = arrayBufferViewCore;
+       var $reduceRight$1 = arrayReduce.right;
 
-       var aTypedArray$7 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$8 = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$7 = ArrayBufferViewCore$7.aTypedArray;
+       var exportTypedArrayMethod$8 = ArrayBufferViewCore$7.exportTypedArrayMethod;
 
        // `%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 length = arguments.length;
+         return $reduceRight$1(aTypedArray$7(this), callbackfn, length, length > 1 ? arguments[1] : undefined);
        });
 
-       var aTypedArray$6 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$7 = arrayBufferViewCore.exportTypedArrayMethod;
+       var ArrayBufferViewCore$6 = arrayBufferViewCore;
+
+       var aTypedArray$6 = ArrayBufferViewCore$6.aTypedArray;
+       var exportTypedArrayMethod$7 = ArrayBufferViewCore$6.exportTypedArrayMethod;
        var floor$5 = Math.floor;
 
        // `%TypedArray%.prototype.reverse` method
          } return that;
        });
 
-       var aTypedArray$5 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$6 = arrayBufferViewCore.exportTypedArrayMethod;
-
-       var FORCED$d = fails(function () {
+       var global$s = global$1o;
+       var call$a = functionCall;
+       var ArrayBufferViewCore$5 = arrayBufferViewCore;
+       var lengthOfArrayLike$7 = lengthOfArrayLike$i;
+       var toOffset = toOffset$2;
+       var toIndexedObject$4 = toObject$i;
+       var fails$y = fails$V;
+
+       var RangeError$6 = global$s.RangeError;
+       var Int8Array$2 = global$s.Int8Array;
+       var Int8ArrayPrototype = Int8Array$2 && Int8Array$2.prototype;
+       var $set = Int8ArrayPrototype && Int8ArrayPrototype.set;
+       var aTypedArray$5 = ArrayBufferViewCore$5.aTypedArray;
+       var exportTypedArrayMethod$6 = ArrayBufferViewCore$5.exportTypedArrayMethod;
+
+       var WORKS_WITH_OBJECTS_AND_GEERIC_ON_TYPED_ARRAYS = !fails$y(function () {
          // eslint-disable-next-line es/no-typed-arrays -- required for testing
-         new Int8Array(1).set({});
+         var array = new Uint8ClampedArray(2);
+         call$a($set, array, { length: 1, 0: 3 }, 1);
+         return array[1] !== 3;
+       });
+
+       // https://bugs.chromium.org/p/v8/issues/detail?id=11294 and other
+       var TO_OBJECT_BUG = WORKS_WITH_OBJECTS_AND_GEERIC_ON_TYPED_ARRAYS && ArrayBufferViewCore$5.NATIVE_ARRAY_BUFFER_VIEWS && fails$y(function () {
+         var array = new Int8Array$2(2);
+         array.set(1);
+         array.set('2', 1);
+         return array[0] !== 0 || array[1] !== 2;
        });
 
        // `%TypedArray%.prototype.set` method
        exportTypedArrayMethod$6('set', function set(arrayLike /* , offset */) {
          aTypedArray$5(this);
          var offset = toOffset(arguments.length > 1 ? arguments[1] : undefined, 1);
+         var src = toIndexedObject$4(arrayLike);
+         if (WORKS_WITH_OBJECTS_AND_GEERIC_ON_TYPED_ARRAYS) return call$a($set, this, src, offset);
          var length = this.length;
-         var src = toObject(arrayLike);
-         var len = toLength(src.length);
+         var len = lengthOfArrayLike$7(src);
          var index = 0;
-         if (len + offset > length) throw RangeError('Wrong length');
+         if (len + offset > length) throw RangeError$6('Wrong length');
          while (index < len) this[offset + index] = src[index++];
-       }, FORCED$d);
+       }, !WORKS_WITH_OBJECTS_AND_GEERIC_ON_TYPED_ARRAYS || TO_OBJECT_BUG);
+
+       var ArrayBufferViewCore$4 = arrayBufferViewCore;
+       var typedArraySpeciesConstructor$1 = typedArraySpeciesConstructor$4;
+       var fails$x = fails$V;
+       var arraySlice$7 = arraySlice$b;
 
-       var aTypedArray$4 = arrayBufferViewCore.aTypedArray;
-       var aTypedArrayConstructor = arrayBufferViewCore.aTypedArrayConstructor;
-       var exportTypedArrayMethod$5 = arrayBufferViewCore.exportTypedArrayMethod;
-       var $slice$1 = [].slice;
+       var aTypedArray$4 = ArrayBufferViewCore$4.aTypedArray;
+       var exportTypedArrayMethod$5 = ArrayBufferViewCore$4.exportTypedArrayMethod;
 
-       var FORCED$c = fails(function () {
+       var FORCED$e = fails$x(function () {
          // eslint-disable-next-line es/no-typed-arrays -- required for testing
          new Int8Array(1).slice();
        });
        // `%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(this, this.constructor);
+         var list = arraySlice$7(aTypedArray$4(this), start, end);
+         var C = typedArraySpeciesConstructor$1(this);
          var index = 0;
          var length = list.length;
-         var result = new (aTypedArrayConstructor(C))(length);
+         var result = new C(length);
          while (length > index) result[index] = list[index++];
          return result;
-       }, FORCED$c);
+       }, FORCED$e);
 
+       var ArrayBufferViewCore$3 = arrayBufferViewCore;
        var $some$1 = arrayIteration.some;
 
-       var aTypedArray$3 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$4 = arrayBufferViewCore.exportTypedArrayMethod;
+       var aTypedArray$3 = ArrayBufferViewCore$3.aTypedArray;
+       var exportTypedArrayMethod$4 = ArrayBufferViewCore$3.exportTypedArrayMethod;
 
        // `%TypedArray%.prototype.some` method
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.some
          return $some$1(aTypedArray$3(this), callbackfn, arguments.length > 1 ? arguments[1] : undefined);
        });
 
-       // TODO: use something more complex like timsort?
+       var arraySlice$6 = arraySliceSimple;
+
        var floor$4 = Math.floor;
 
        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),
+           array,
+           mergeSort(arraySlice$6(array, 0, middle), comparefn),
+           mergeSort(arraySlice$6(array, middle), comparefn),
            comparefn
          );
        };
          } return array;
        };
 
-       var merge$5 = function (left, right, comparefn) {
+       var merge$5 = function (array, left, right, comparefn) {
          var llength = left.length;
          var rlength = right.length;
          var lindex = 0;
          var rindex = 0;
-         var result = [];
 
          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;
+           array[lindex + rindex] = (lindex < llength && rindex < rlength)
+             ? comparefn(left[lindex], right[rindex]) <= 0 ? left[lindex++] : right[rindex++]
+             : lindex < llength ? left[lindex++] : right[rindex++];
+         } return array;
        };
 
-       var arraySort = mergeSort;
+       var arraySort$1 = mergeSort;
+
+       var userAgent$3 = engineUserAgent;
 
-       var firefox = engineUserAgent.match(/firefox\/(\d+)/i);
+       var firefox = userAgent$3.match(/firefox\/(\d+)/i);
 
        var engineFfVersion = !!firefox && +firefox[1];
 
-       var engineIsIeOrEdge = /MSIE|Trident/.test(engineUserAgent);
+       var UA = engineUserAgent;
 
-       var webkit = engineUserAgent.match(/AppleWebKit\/(\d+)\./);
+       var engineIsIeOrEdge = /MSIE|Trident/.test(UA);
+
+       var userAgent$2 = engineUserAgent;
+
+       var webkit = userAgent$2.match(/AppleWebKit\/(\d+)\./);
 
        var engineWebkitVersion = !!webkit && +webkit[1];
 
-       var aTypedArray$2 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$3 = arrayBufferViewCore.exportTypedArrayMethod;
-       var Uint16Array = global$2.Uint16Array;
-       var nativeSort$1 = Uint16Array && Uint16Array.prototype.sort;
+       var global$r = global$1o;
+       var uncurryThis$x = functionUncurryThis;
+       var fails$w = fails$V;
+       var aCallable$3 = aCallable$a;
+       var internalSort$1 = arraySort$1;
+       var ArrayBufferViewCore$2 = arrayBufferViewCore;
+       var FF$1 = engineFfVersion;
+       var IE_OR_EDGE$1 = engineIsIeOrEdge;
+       var V8$1 = engineV8Version;
+       var WEBKIT$1 = engineWebkitVersion;
+
+       var Array$3 = global$r.Array;
+       var aTypedArray$2 = ArrayBufferViewCore$2.aTypedArray;
+       var exportTypedArrayMethod$3 = ArrayBufferViewCore$2.exportTypedArrayMethod;
+       var Uint16Array = global$r.Uint16Array;
+       var un$Sort$1 = Uint16Array && uncurryThis$x(Uint16Array.prototype.sort);
 
        // WebKit
-       var ACCEPT_INCORRECT_ARGUMENTS = !!nativeSort$1 && !fails(function () {
-         var array = new Uint16Array(2);
-         array.sort(null);
-         array.sort({});
-       });
+       var ACCEPT_INCORRECT_ARGUMENTS = !!un$Sort$1 && !(fails$w(function () {
+         un$Sort$1(new Uint16Array(2), null);
+       }) && fails$w(function () {
+         un$Sort$1(new Uint16Array(2), {});
+       }));
 
-       var STABLE_SORT$1 = !!nativeSort$1 && !fails(function () {
+       var STABLE_SORT$1 = !!un$Sort$1 && !fails$w(function () {
          // feature detection can be too slow, so check engines versions
-         if (engineV8Version) return engineV8Version < 74;
-         if (engineFfVersion) return engineFfVersion < 67;
-         if (engineIsIeOrEdge) return true;
-         if (engineWebkitVersion) return engineWebkitVersion < 602;
+         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 array = new Uint16Array(516);
-         var expected = Array(516);
+         var expected = Array$3(516);
          var index, mod;
 
          for (index = 0; index < 516; index++) {
            expected[index] = index - 2 * mod + 3;
          }
 
-         array.sort(function (a, b) {
+         un$Sort$1(array, function (a, b) {
            return (a / 4 | 0) - (b / 4 | 0);
          });
 
        // `%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(comparefn);
-         if (STABLE_SORT$1) return nativeSort$1.call(array, comparefn);
-
-         aTypedArray$2(array);
-         var arrayLength = toLength(array.length);
-         var items = Array(arrayLength);
-         var index;
-
-         for (index = 0; index < arrayLength; index++) {
-           items[index] = array[index];
-         }
-
-         items = arraySort(array, getSortCompare$1(comparefn));
-
-         for (index = 0; index < arrayLength; index++) {
-           array[index] = items[index];
-         }
+         if (comparefn !== undefined) aCallable$3(comparefn);
+         if (STABLE_SORT$1) return un$Sort$1(this, comparefn);
 
-         return array;
+         return internalSort$1(aTypedArray$2(this), getSortCompare$1(comparefn));
        }, !STABLE_SORT$1 || ACCEPT_INCORRECT_ARGUMENTS);
 
-       var aTypedArray$1 = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$2 = arrayBufferViewCore.exportTypedArrayMethod;
+       var ArrayBufferViewCore$1 = arrayBufferViewCore;
+       var toLength$6 = toLength$c;
+       var toAbsoluteIndex$3 = toAbsoluteIndex$9;
+       var typedArraySpeciesConstructor = typedArraySpeciesConstructor$4;
+
+       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(begin, length);
-         return new (speciesConstructor(O, O.constructor))(
+         var beginIndex = toAbsoluteIndex$3(begin, length);
+         var C = typedArraySpeciesConstructor(O);
+         return new C(
            O.buffer,
            O.byteOffset + beginIndex * O.BYTES_PER_ELEMENT,
-           toLength((end === undefined ? length : toAbsoluteIndex(end, length)) - beginIndex)
+           toLength$6((end === undefined ? length : toAbsoluteIndex$3(end, length)) - beginIndex)
          );
        });
 
-       var Int8Array$1 = global$2.Int8Array;
-       var aTypedArray = arrayBufferViewCore.aTypedArray;
-       var exportTypedArrayMethod$1 = arrayBufferViewCore.exportTypedArrayMethod;
+       var global$q = global$1o;
+       var apply$4 = functionApply;
+       var ArrayBufferViewCore = arrayBufferViewCore;
+       var fails$v = fails$V;
+       var arraySlice$5 = arraySlice$b;
+
+       var Int8Array$1 = global$q.Int8Array;
+       var aTypedArray = ArrayBufferViewCore.aTypedArray;
+       var exportTypedArrayMethod$1 = ArrayBufferViewCore.exportTypedArrayMethod;
        var $toLocaleString = [].toLocaleString;
-       var $slice = [].slice;
 
        // iOS Safari 6.x fails here
-       var TO_LOCALE_STRING_BUG = !!Int8Array$1 && fails(function () {
+       var TO_LOCALE_STRING_BUG = !!Int8Array$1 && fails$v(function () {
          $toLocaleString.call(new Int8Array$1(1));
        });
 
-       var FORCED$b = fails(function () {
+       var FORCED$d = fails$v(function () {
          return [1, 2].toLocaleString() != new Int8Array$1([1, 2]).toLocaleString();
-       }) || !fails(function () {
+       }) || !fails$v(function () {
          Int8Array$1.prototype.toLocaleString.call([1, 2]);
        });
 
        // `%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);
+         return apply$4(
+           $toLocaleString,
+           TO_LOCALE_STRING_BUG ? arraySlice$5(aTypedArray(this)) : aTypedArray(this),
+           arraySlice$5(arguments)
+         );
+       }, FORCED$d);
 
        var exportTypedArrayMethod = arrayBufferViewCore.exportTypedArrayMethod;
+       var fails$u = fails$V;
+       var global$p = global$1o;
+       var uncurryThis$w = functionUncurryThis;
 
-
-
-       var Uint8Array$1 = global$2.Uint8Array;
+       var Uint8Array$1 = global$p.Uint8Array;
        var Uint8ArrayPrototype = Uint8Array$1 && Uint8Array$1.prototype || {};
        var arrayToString = [].toString;
-       var arrayJoin = [].join;
+       var join$5 = uncurryThis$w([].join);
 
-       if (fails(function () { arrayToString.call({}); })) {
+       if (fails$u(function () { arrayToString.call({}); })) {
          arrayToString = function toString() {
-           return arrayJoin.call(this);
+           return join$5(this);
          };
        }
 
        // https://tc39.es/ecma262/#sec-%typedarray%.prototype.tostring
        exportTypedArrayMethod('toString', arrayToString, IS_NOT_ARRAY_METHOD);
 
-       var nativeJoin = [].join;
+       var $$Z = _export;
+       var uncurryThis$v = functionUncurryThis;
+       var IndexedObject$1 = indexedObject;
+       var toIndexedObject$3 = toIndexedObject$d;
+       var arrayMethodIsStrict$5 = arrayMethodIsStrict$9;
+
+       var un$Join = uncurryThis$v([].join);
 
-       var ES3_STRINGS = indexedObject != Object;
-       var STRICT_METHOD$4 = arrayMethodIsStrict('join', ',');
+       var ES3_STRINGS = IndexedObject$1 != Object;
+       var STRICT_METHOD$5 = arrayMethodIsStrict$5('join', ',');
 
        // `Array.prototype.join` method
        // https://tc39.es/ecma262/#sec-array.prototype.join
-       _export({ target: 'Array', proto: true, forced: ES3_STRINGS || !STRICT_METHOD$4 }, {
+       $$Z({ target: 'Array', proto: true, forced: ES3_STRINGS || !STRICT_METHOD$5 }, {
          join: function join(separator) {
-           return nativeJoin.call(toIndexedObject(this), separator === undefined ? ',' : separator);
+           return un$Join(toIndexedObject$3(this), separator === undefined ? ',' : separator);
          }
        });
 
-       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$2 = arrayMethodHasSpeciesSupport('slice');
-
-       var SPECIES$1 = wellKnownSymbol('species');
-       var nativeSlice = [].slice;
+       var $$Y = _export;
+       var global$o = global$1o;
+       var isArray$4 = isArray$8;
+       var isConstructor$1 = isConstructor$4;
+       var isObject$e = isObject$s;
+       var toAbsoluteIndex$2 = toAbsoluteIndex$9;
+       var lengthOfArrayLike$6 = lengthOfArrayLike$i;
+       var toIndexedObject$2 = toIndexedObject$d;
+       var createProperty$3 = createProperty$5;
+       var wellKnownSymbol$8 = wellKnownSymbol$t;
+       var arrayMethodHasSpeciesSupport$3 = arrayMethodHasSpeciesSupport$5;
+       var un$Slice = arraySlice$b;
+
+       var HAS_SPECIES_SUPPORT$2 = arrayMethodHasSpeciesSupport$3('slice');
+
+       var SPECIES$1 = wellKnownSymbol$8('species');
+       var Array$2 = global$o.Array;
        var max$3 = Math.max;
 
        // `Array.prototype.slice` method
        // https://tc39.es/ecma262/#sec-array.prototype.slice
        // fallback for not array-like ES3 strings and DOM objects
-       _export({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$2 }, {
+       $$Y({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$2 }, {
          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);
+           var O = toIndexedObject$2(this);
+           var length = lengthOfArrayLike$6(O);
+           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(O)) {
+           if (isArray$4(O)) {
              Constructor = O.constructor;
              // cross-realm fallback
-             if (typeof Constructor == 'function' && (Constructor === Array || isArray(Constructor.prototype))) {
+             if (isConstructor$1(Constructor) && (Constructor === Array$2 || isArray$4(Constructor.prototype))) {
                Constructor = undefined;
-             } else if (isObject$4(Constructor)) {
+             } else if (isObject$e(Constructor)) {
                Constructor = Constructor[SPECIES$1];
                if (Constructor === null) Constructor = undefined;
              }
-             if (Constructor === Array || Constructor === undefined) {
-               return nativeSlice.call(O, k, fin);
+             if (Constructor === Array$2 || Constructor === undefined) {
+               return un$Slice(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(result, n, O[k]);
+           result = new (Constructor === undefined ? Array$2 : 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 ITERATOR$1 = wellKnownSymbol('iterator');
+       var fails$t = fails$V;
+       var wellKnownSymbol$7 = wellKnownSymbol$t;
+       var IS_PURE = isPure;
 
-       var nativeUrl = !fails(function () {
+       var ITERATOR$3 = wellKnownSymbol$7('iterator');
+
+       var nativeUrl = !fails$t(function () {
+         // eslint-disable-next-line unicorn/relative-url-style -- required for testing
          var url = new URL('b?a=1&b=2&c=3', 'http://a');
          var searchParams = url.searchParams;
          var result = '';
            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[ITERATOR$1]
+           || !searchParams[ITERATOR$3]
            // throws in Edge
            || new URL('https://a@b').username !== 'a'
            || new URLSearchParams(new URLSearchParams('a=b')).get('a') !== 'b'
            || new URL('http://x', undefined).host !== 'x';
        });
 
-       // 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$4 = Object.defineProperty;
-
-       // `Object.assign` method
-       // https://tc39.es/ecma262/#sec-object.assign
-       var objectAssign = !$assign || fails(function () {
-         // should have correct order of operations (Edge bug)
-         if (descriptors && $assign({ b: 1 }, $assign(defineProperty$4({}, 'a', {
-           enumerable: true,
-           get: function () {
-             defineProperty$4(this, 'b', {
-               value: 3,
-               enumerable: false
-             });
-           }
-         }), { b: 2 })).b !== 1) return true;
-         // should work with symbols and should have deterministic property order (V8 bug)
-         var A = {};
-         var B = {};
-         // 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; });
-         return $assign({}, A)[symbol] != 7 || objectKeys($assign({}, B)).join('') != alphabet;
-       }) ? function assign(target, source) { // eslint-disable-line no-unused-vars -- required for `.length`
-         var T = toObject(target);
-         var argumentsLength = arguments.length;
-         var index = 1;
-         var getOwnPropertySymbols = objectGetOwnPropertySymbols.f;
-         var propertyIsEnumerable = objectPropertyIsEnumerable.f;
-         while (argumentsLength > index) {
-           var S = indexedObject(arguments[index++]);
-           var keys = getOwnPropertySymbols ? objectKeys(S).concat(getOwnPropertySymbols(S)) : objectKeys(S);
-           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];
-           }
-         } return T;
-       } : $assign;
-
-       // 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);
-         } catch (error) {
-           iteratorClose(iterator);
-           throw error;
-         }
-       };
-
-       // `Array.from` method implementation
-       // https://tc39.es/ecma262/#sec-array.from
-       var arrayFrom = function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) {
-         var O = toObject(arrayLike);
-         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 index = 0;
-         var length, result, step, iterator, next, value;
-         if (mapping) mapfn = functionBindContext(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);
-           next = iterator.next;
-           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);
-           }
-         } else {
-           length = toLength(O.length);
-           result = new C(length);
-           for (;length > index; index++) {
-             value = mapping ? mapfn(O[index], index) : O[index];
-             createProperty(result, index, value);
-           }
-         }
-         result.length = index;
-         return result;
-       };
-
-       // based on https://github.com/bestiejs/punycode.js/blob/master/punycode.js
-       var maxInt = 2147483647; // aka. 0x7FFFFFFF or 2^31-1
-       var base = 36;
-       var tMin = 1;
-       var tMax = 26;
-       var skew = 38;
-       var damp = 700;
-       var initialBias = 72;
-       var initialN = 128; // 0x80
-       var delimiter = '-'; // '\x2D'
-       var regexNonASCII = /[^\0-\u007E]/; // non-ASCII chars
-       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$3 = Math.floor;
-       var stringFromCharCode = String.fromCharCode;
-
-       /**
-        * Creates an array containing the numeric code points of each Unicode
-        * character in the string. While JavaScript uses UCS-2 internally,
-        * this function will convert a pair of surrogate halves (each of which
-        * UCS-2 exposes as separate characters) into a single code point,
-        * matching UTF-16.
-        */
-       var ucs2decode = function (string) {
-         var output = [];
-         var counter = 0;
-         var length = string.length;
-         while (counter < length) {
-           var value = string.charCodeAt(counter++);
-           if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
-             // It's a high surrogate, and there is a next character.
-             var extra = string.charCodeAt(counter++);
-             if ((extra & 0xFC00) == 0xDC00) { // Low surrogate.
-               output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
-             } else {
-               // It's an unmatched surrogate; only append this code unit, in case the
-               // next code unit is the high surrogate of a surrogate pair.
-               output.push(value);
-               counter--;
-             }
-           } else {
-             output.push(value);
-           }
-         }
-         return output;
-       };
-
-       /**
-        * Converts a digit/integer into a basic code point.
-        */
-       var digitToBasic = function (digit) {
-         //  0..25 map to ASCII a..z or A..Z
-         // 26..35 map to ASCII 0..9
-         return digit + 22 + 75 * (digit < 26);
-       };
-
-       /**
-        * Bias adaptation function as per section 3.4 of RFC 3492.
-        * https://tools.ietf.org/html/rfc3492#section-3.4
-        */
-       var adapt = function (delta, numPoints, firstTime) {
-         var k = 0;
-         delta = firstTime ? floor$3(delta / damp) : delta >> 1;
-         delta += floor$3(delta / numPoints);
-         for (; delta > baseMinusTMin * tMax >> 1; k += base) {
-           delta = floor$3(delta / baseMinusTMin);
-         }
-         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.
-        */
-       // eslint-disable-next-line max-statements -- TODO
-       var encode = function (input) {
-         var output = [];
-
-         // Convert the input in UCS-2 to an array of Unicode code points.
-         input = ucs2decode(input);
-
-         // Cache the length.
-         var inputLength = input.length;
-
-         // Initialize the state.
-         var n = initialN;
-         var delta = 0;
-         var bias = initialBias;
-         var i, currentValue;
-
-         // Handle the basic code points.
-         for (i = 0; i < input.length; i++) {
-           currentValue = input[i];
-           if (currentValue < 0x80) {
-             output.push(stringFromCharCode(currentValue));
-           }
-         }
-
-         var basicLength = output.length; // number of basic code points.
-         var handledCPCount = basicLength; // number of code points that have been handled;
-
-         // Finish the basic string with a delimiter unless it's empty.
-         if (basicLength) {
-           output.push(delimiter);
-         }
-
-         // Main encoding loop:
-         while (handledCPCount < inputLength) {
-           // All non-basic code points < n have been handled already. Find the next larger one:
-           var m = maxInt;
-           for (i = 0; i < input.length; i++) {
-             currentValue = input[i];
-             if (currentValue >= n && currentValue < m) {
-               m = currentValue;
-             }
-           }
-
-           // 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$3((maxInt - delta) / handledCPCountPlusOne)) {
-             throw RangeError(OVERFLOW_ERROR);
-           }
-
-           delta += (m - n) * handledCPCountPlusOne;
-           n = m;
-
-           for (i = 0; i < input.length; i++) {
-             currentValue = input[i];
-             if (currentValue < n && ++delta > maxInt) {
-               throw RangeError(OVERFLOW_ERROR);
-             }
-             if (currentValue == n) {
-               // Represent delta as a generalized variable-length integer.
-               var q = delta;
-               for (var k = base; /* no condition */; k += base) {
-                 var t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
-                 if (q < t) break;
-                 var qMinusT = q - t;
-                 var baseMinusT = base - t;
-                 output.push(stringFromCharCode(digitToBasic(t + qMinusT % baseMinusT)));
-                 q = floor$3(qMinusT / baseMinusT);
-               }
-
-               output.push(stringFromCharCode(digitToBasic(q)));
-               bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
-               delta = 0;
-               ++handledCPCount;
-             }
-           }
-
-           ++delta;
-           ++n;
-         }
-         return output.join('');
-       };
-
-       var stringPunycodeToAscii = function (input) {
-         var encoded = [];
-         var labels = input.toLowerCase().replace(regexSeparators, '\u002E').split('.');
-         var i, label;
-         for (i = 0; i < labels.length; i++) {
-           label = labels[i];
-           encoded.push(regexNonASCII.test(label) ? 'xn--' + encode(label) : label);
-         }
-         return encoded.join('.');
-       };
-
-       var getIterator = function (it) {
-         var iteratorMethod = getIteratorMethod(it);
-         if (typeof iteratorMethod != 'function') {
-           throw TypeError(String(it) + ' is not iterable');
-         } return anObject(iteratorMethod.call(it));
-       };
-
        // TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
 
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-       var $fetch = getBuiltIn('fetch');
-       var Headers$1 = getBuiltIn('Headers');
-       var ITERATOR = wellKnownSymbol('iterator');
+       var $$X = _export;
+       var global$n = global$1o;
+       var getBuiltIn$2 = getBuiltIn$b;
+       var call$9 = functionCall;
+       var uncurryThis$u = functionUncurryThis;
+       var USE_NATIVE_URL$1 = nativeUrl;
+       var redefine$7 = redefine$h.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 isCallable$5 = isCallable$r;
+       var hasOwn$6 = hasOwnProperty_1;
+       var bind$8 = functionBindContext;
+       var classof$3 = classof$d;
+       var anObject$9 = anObject$n;
+       var isObject$d = isObject$s;
+       var $toString$2 = toString$k;
+       var create$6 = objectCreate;
+       var createPropertyDescriptor = createPropertyDescriptor$7;
+       var getIterator$1 = getIterator$4;
+       var getIteratorMethod$1 = getIteratorMethod$5;
+       var validateArgumentsLength$2 = validateArgumentsLength$4;
+       var wellKnownSymbol$6 = wellKnownSymbol$t;
+       var arraySort = arraySort$1;
+
+       var ITERATOR$2 = wellKnownSymbol$6('iterator');
        var URL_SEARCH_PARAMS = 'URLSearchParams';
        var URL_SEARCH_PARAMS_ITERATOR = URL_SEARCH_PARAMS + 'Iterator';
-       var setInternalState$2 = 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$2.getterFor(URL_SEARCH_PARAMS_ITERATOR);
+
+       var n$Fetch = getBuiltIn$2('fetch');
+       var N$Request = getBuiltIn$2('Request');
+       var Headers$1 = getBuiltIn$2('Headers');
+       var RequestPrototype = N$Request && N$Request.prototype;
+       var HeadersPrototype = Headers$1 && Headers$1.prototype;
+       var RegExp$1 = global$n.RegExp;
+       var TypeError$8 = global$n.TypeError;
+       var decodeURIComponent$1 = global$n.decodeURIComponent;
+       var encodeURIComponent$1 = global$n.encodeURIComponent;
+       var charAt$5 = uncurryThis$u(''.charAt);
+       var join$4 = uncurryThis$u([].join);
+       var push$7 = uncurryThis$u([].push);
+       var replace$6 = uncurryThis$u(''.replace);
+       var shift$1 = uncurryThis$u([].shift);
+       var splice = uncurryThis$u([].splice);
+       var split$3 = uncurryThis$u(''.split);
+       var stringSlice$8 = uncurryThis$u(''.slice);
 
        var plus = /\+/g;
        var sequences = Array(4);
 
        var percentSequence = function (bytes) {
-         return sequences[bytes - 1] || (sequences[bytes - 1] = RegExp('((?:%[\\da-f]{2}){' + bytes + '})', 'gi'));
+         return sequences[bytes - 1] || (sequences[bytes - 1] = RegExp$1('((?:%[\\da-f]{2}){' + bytes + '})', 'gi'));
        };
 
        var percentDecode = function (sequence) {
          try {
-           return decodeURIComponent(sequence);
+           return decodeURIComponent$1(sequence);
          } catch (error) {
            return sequence;
          }
        };
 
        var deserialize = function (it) {
-         var result = it.replace(plus, ' ');
+         var result = replace$6(it, plus, ' ');
          var bytes = 4;
          try {
-           return decodeURIComponent(result);
+           return decodeURIComponent$1(result);
          } catch (error) {
            while (bytes) {
-             result = result.replace(percentSequence(bytes--), percentDecode);
+             result = replace$6(result, percentSequence(bytes--), percentDecode);
            }
            return result;
          }
 
        var find$1 = /[!'()~]|%20/g;
 
-       var replace$1 = {
+       var replacements = {
          '!': '%21',
          "'": '%27',
          '(': '%28',
        };
 
        var replacer = function (match) {
-         return replace$1[match];
+         return replacements[match];
        };
 
        var serialize = function (it) {
-         return encodeURIComponent(it).replace(find$1, replacer);
-       };
-
-       var parseSearchParams = function (result, query) {
-         if (query) {
-           var attributes = query.split('&');
-           var index = 0;
-           var attribute, entry;
-           while (index < attributes.length) {
-             attribute = attributes[index++];
-             if (attribute.length) {
-               entry = attribute.split('=');
-               result.push({
-                 key: deserialize(entry.shift()),
-                 value: deserialize(entry.join('='))
-               });
-             }
-           }
-         }
-       };
-
-       var updateSearchParams = function (query) {
-         this.entries.length = 0;
-         parseSearchParams(this.entries, query);
-       };
-
-       var validateArgumentsLength = function (passed, required) {
-         if (passed < required) throw TypeError('Not enough arguments');
+         return replace$6(encodeURIComponent$1(it), find$1, replacer);
        };
 
        var URLSearchParamsIterator = createIteratorConstructor(function Iterator(params, kind) {
          setInternalState$2(this, {
            type: URL_SEARCH_PARAMS_ITERATOR,
-           iterator: getIterator(getInternalParamsState(params).entries),
+           iterator: getIterator$1(getInternalParamsState(params).entries),
            kind: kind
          });
        }, 'Iterator', function next() {
          if (!step.done) {
            step.value = kind === 'keys' ? entry.key : kind === 'values' ? entry.value : [entry.key, entry.value];
          } return step;
-       });
+       }, true);
 
-       // `URLSearchParams` constructor
-       // https://url.spec.whatwg.org/#interface-urlsearchparams
-       var URLSearchParamsConstructor = function URLSearchParams(/* init */) {
-         anInstance(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;
-
-         setInternalState$2(that, {
-           type: URL_SEARCH_PARAMS,
-           entries: entries,
-           updateURL: function () { /* empty */ },
-           updateSearchParams: updateSearchParams
-         });
+       var URLSearchParamsState = function (init) {
+         this.entries = [];
+         this.url = null;
 
          if (init !== undefined) {
-           if (isObject$4(init)) {
-             iteratorMethod = getIteratorMethod(init);
-             if (typeof iteratorMethod === 'function') {
-               iterator = iteratorMethod.call(init);
-               next = iterator.next;
-               while (!(step = next.call(iterator)).done) {
-                 entryIterator = getIterator(anObject(step.value));
-                 entryNext = entryIterator.next;
-                 if (
-                   (first = entryNext.call(entryIterator)).done ||
-                   (second = entryNext.call(entryIterator)).done ||
-                   !entryNext.call(entryIterator).done
-                 ) throw TypeError('Expected sequence with length 2');
-                 entries.push({ key: first.value + '', value: second.value + '' });
+           if (isObject$d(init)) this.parseObject(init);
+           else this.parseQuery(typeof init == 'string' ? charAt$5(init, 0) === '?' ? stringSlice$8(init, 1) : init : $toString$2(init));
+         }
+       };
+
+       URLSearchParamsState.prototype = {
+         type: URL_SEARCH_PARAMS,
+         bindURL: function (url) {
+           this.url = url;
+           this.update();
+         },
+         parseObject: function (object) {
+           var iteratorMethod = getIteratorMethod$1(object);
+           var iterator, next, step, entryIterator, entryNext, first, second;
+
+           if (iteratorMethod) {
+             iterator = getIterator$1(object, iteratorMethod);
+             next = iterator.next;
+             while (!(step = call$9(next, iterator)).done) {
+               entryIterator = getIterator$1(anObject$9(step.value));
+               entryNext = entryIterator.next;
+               if (
+                 (first = call$9(entryNext, entryIterator)).done ||
+                 (second = call$9(entryNext, entryIterator)).done ||
+                 !call$9(entryNext, entryIterator).done
+               ) throw TypeError$8('Expected sequence with length 2');
+               push$7(this.entries, { key: $toString$2(first.value), value: $toString$2(second.value) });
+             }
+           } else for (var key in object) if (hasOwn$6(object, key)) {
+             push$7(this.entries, { key: key, value: $toString$2(object[key]) });
+           }
+         },
+         parseQuery: function (query) {
+           if (query) {
+             var attributes = split$3(query, '&');
+             var index = 0;
+             var attribute, entry;
+             while (index < attributes.length) {
+               attribute = attributes[index++];
+               if (attribute.length) {
+                 entry = split$3(attribute, '=');
+                 push$7(this.entries, {
+                   key: deserialize(shift$1(entry)),
+                   value: deserialize(join$4(entry, '='))
+                 });
                }
-             } else for (key in init) if (has$1(init, key)) entries.push({ key: key, value: init[key] + '' });
-           } else {
-             parseSearchParams(entries, typeof init === 'string' ? init.charAt(0) === '?' ? init.slice(1) : init : init + '');
+             }
            }
+         },
+         serialize: function () {
+           var entries = this.entries;
+           var result = [];
+           var index = 0;
+           var entry;
+           while (index < entries.length) {
+             entry = entries[index++];
+             push$7(result, serialize(entry.key) + '=' + serialize(entry.value));
+           } return join$4(result, '&');
+         },
+         update: function () {
+           this.entries.length = 0;
+           this.parseQuery(this.url.query);
+         },
+         updateURL: function () {
+           if (this.url) this.url.update();
          }
        };
 
+       // `URLSearchParams` constructor
+       // https://url.spec.whatwg.org/#interface-urlsearchparams
+       var URLSearchParamsConstructor = function URLSearchParams(/* init */) {
+         anInstance$3(this, URLSearchParamsPrototype);
+         var init = arguments.length > 0 ? arguments[0] : undefined;
+         setInternalState$2(this, new URLSearchParamsState(init));
+       };
+
        var URLSearchParamsPrototype = URLSearchParamsConstructor.prototype;
 
-       redefineAll(URLSearchParamsPrototype, {
+       redefineAll$1(URLSearchParamsPrototype, {
          // `URLSearchParams.prototype.append` method
          // https://url.spec.whatwg.org/#dom-urlsearchparams-append
          append: function append(name, value) {
-           validateArgumentsLength(arguments.length, 2);
+           validateArgumentsLength$2(arguments.length, 2);
            var state = getInternalParamsState(this);
-           state.entries.push({ key: name + '', value: value + '' });
+           push$7(state.entries, { key: $toString$2(name), value: $toString$2(value) });
            state.updateURL();
          },
          // `URLSearchParams.prototype.delete` method
          // https://url.spec.whatwg.org/#dom-urlsearchparams-delete
          'delete': function (name) {
-           validateArgumentsLength(arguments.length, 1);
+           validateArgumentsLength$2(arguments.length, 1);
            var state = getInternalParamsState(this);
            var entries = state.entries;
-           var key = name + '';
+           var key = $toString$2(name);
            var index = 0;
            while (index < entries.length) {
-             if (entries[index].key === key) entries.splice(index, 1);
+             if (entries[index].key === key) splice(entries, index, 1);
              else index++;
            }
            state.updateURL();
          // `URLSearchParams.prototype.get` method
          // https://url.spec.whatwg.org/#dom-urlsearchparams-get
          get: function get(name) {
-           validateArgumentsLength(arguments.length, 1);
+           validateArgumentsLength$2(arguments.length, 1);
            var entries = getInternalParamsState(this).entries;
-           var key = name + '';
+           var key = $toString$2(name);
            var index = 0;
            for (; index < entries.length; index++) {
              if (entries[index].key === key) return entries[index].value;
          // `URLSearchParams.prototype.getAll` method
          // https://url.spec.whatwg.org/#dom-urlsearchparams-getall
          getAll: function getAll(name) {
-           validateArgumentsLength(arguments.length, 1);
+           validateArgumentsLength$2(arguments.length, 1);
            var entries = getInternalParamsState(this).entries;
-           var key = name + '';
+           var key = $toString$2(name);
            var result = [];
            var index = 0;
            for (; index < entries.length; index++) {
-             if (entries[index].key === key) result.push(entries[index].value);
+             if (entries[index].key === key) push$7(result, entries[index].value);
            }
            return result;
          },
          // `URLSearchParams.prototype.has` method
          // https://url.spec.whatwg.org/#dom-urlsearchparams-has
          has: function has(name) {
-           validateArgumentsLength(arguments.length, 1);
+           validateArgumentsLength$2(arguments.length, 1);
            var entries = getInternalParamsState(this).entries;
-           var key = name + '';
+           var key = $toString$2(name);
            var index = 0;
            while (index < entries.length) {
              if (entries[index++].key === key) return true;
          // `URLSearchParams.prototype.set` method
          // https://url.spec.whatwg.org/#dom-urlsearchparams-set
          set: function set(name, value) {
-           validateArgumentsLength(arguments.length, 1);
+           validateArgumentsLength$2(arguments.length, 1);
            var state = getInternalParamsState(this);
            var entries = state.entries;
            var found = false;
-           var key = name + '';
-           var val = value + '';
+           var key = $toString$2(name);
+           var val = $toString$2(value);
            var index = 0;
            var entry;
            for (; index < entries.length; index++) {
              entry = entries[index];
              if (entry.key === key) {
-               if (found) entries.splice(index--, 1);
+               if (found) splice(entries, index--, 1);
                else {
                  found = true;
                  entry.value = val;
                }
              }
            }
-           if (!found) entries.push({ key: key, value: val });
+           if (!found) push$7(entries, { key: key, value: val });
            state.updateURL();
          },
          // `URLSearchParams.prototype.sort` method
          // https://url.spec.whatwg.org/#dom-urlsearchparams-sort
          sort: function sort() {
            var state = getInternalParamsState(this);
-           var entries = state.entries;
-           // Array#sort is not stable in some engines
-           var slice = entries.slice();
-           var entry, entriesIndex, sliceIndex;
-           entries.length = 0;
-           for (sliceIndex = 0; sliceIndex < slice.length; sliceIndex++) {
-             entry = slice[sliceIndex];
-             for (entriesIndex = 0; entriesIndex < sliceIndex; entriesIndex++) {
-               if (entries[entriesIndex].key > entry.key) {
-                 entries.splice(entriesIndex, 0, entry);
-                 break;
-               }
-             }
-             if (entriesIndex === sliceIndex) entries.push(entry);
-           }
+           arraySort(state.entries, function (a, b) {
+             return a.key > b.key ? 1 : -1;
+           });
            state.updateURL();
          },
          // `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$8(callback, arguments.length > 1 ? arguments[1] : undefined);
            var index = 0;
            var entry;
            while (index < entries.length) {
        }, { enumerable: true });
 
        // `URLSearchParams.prototype[@@iterator]` method
-       redefine(URLSearchParamsPrototype, ITERATOR, URLSearchParamsPrototype.entries);
+       redefine$7(URLSearchParamsPrototype, ITERATOR$2, URLSearchParamsPrototype.entries, { name: 'entries' });
 
        // `URLSearchParams.prototype.toString` method
        // https://url.spec.whatwg.org/#urlsearchparams-stringification-behavior
-       redefine(URLSearchParamsPrototype, 'toString', function toString() {
-         var entries = getInternalParamsState(this).entries;
-         var result = [];
-         var index = 0;
-         var entry;
-         while (index < entries.length) {
-           entry = entries[index++];
-           result.push(serialize(entry.key) + '=' + serialize(entry.value));
-         } return result.join('&');
+       redefine$7(URLSearchParamsPrototype, 'toString', function toString() {
+         return getInternalParamsState(this).serialize();
        }, { enumerable: true });
 
-       setToStringTag(URLSearchParamsConstructor, URL_SEARCH_PARAMS);
+       setToStringTag$4(URLSearchParamsConstructor, URL_SEARCH_PARAMS);
 
-       _export({ global: true, forced: !nativeUrl }, {
+       $$X({ 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
-       if (!nativeUrl && typeof $fetch == 'function' && typeof Headers$1 == 'function') {
-         _export({ 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];
-               if (isObject$4(init)) {
-                 body = init.body;
-                 if (classof(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');
-                   }
-                   init = objectCreate(init, {
-                     body: createPropertyDescriptor(0, String(body)),
-                     headers: createPropertyDescriptor(0, headers)
-                   });
-                 }
-               }
-               args.push(init);
-             } return $fetch.apply(this, args);
-           }
-         });
+       // Wrap `fetch` and `Request` for correct work with polyfilled `URLSearchParams`
+       if (!USE_NATIVE_URL$1 && isCallable$5(Headers$1)) {
+         var headersHas = uncurryThis$u(HeadersPrototype.has);
+         var headersSet = uncurryThis$u(HeadersPrototype.set);
+
+         var wrapRequestOptions = function (init) {
+           if (isObject$d(init)) {
+             var body = init.body;
+             var headers;
+             if (classof$3(body) === URL_SEARCH_PARAMS) {
+               headers = init.headers ? new Headers$1(init.headers) : new Headers$1();
+               if (!headersHas(headers, 'content-type')) {
+                 headersSet(headers, 'content-type', 'application/x-www-form-urlencoded;charset=UTF-8');
+               }
+               return create$6(init, {
+                 body: createPropertyDescriptor(0, $toString$2(body)),
+                 headers: createPropertyDescriptor(0, headers)
+               });
+             }
+           } return init;
+         };
+
+         if (isCallable$5(n$Fetch)) {
+           $$X({ global: true, enumerable: true, forced: true }, {
+             fetch: function fetch(input /* , init */) {
+               return n$Fetch(input, arguments.length > 1 ? wrapRequestOptions(arguments[1]) : {});
+             }
+           });
+         }
+
+         if (isCallable$5(N$Request)) {
+           var RequestConstructor = function Request(input /* , init */) {
+             anInstance$3(this, RequestPrototype);
+             return new N$Request(input, arguments.length > 1 ? wrapRequestOptions(arguments[1]) : {});
+           };
+
+           RequestPrototype.constructor = RequestConstructor;
+           RequestConstructor.prototype = RequestPrototype;
+
+           $$X({ global: true, forced: true }, {
+             Request: RequestConstructor
+           });
+         }
        }
 
        var web_urlSearchParams = {
          getState: getInternalParamsState
        };
 
-       // TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
-
-
-
+       var uncurryThis$t = functionUncurryThis;
+       var PROPER_FUNCTION_NAME$1 = functionName.PROPER;
+       var redefine$6 = redefine$h.exports;
+       var anObject$8 = anObject$n;
+       var isPrototypeOf$2 = objectIsPrototypeOf;
+       var $toString$1 = toString$k;
+       var fails$s = fails$V;
+       var regExpFlags$2 = regexpFlags$1;
 
+       var TO_STRING = 'toString';
+       var RegExpPrototype$3 = RegExp.prototype;
+       var n$ToString = RegExpPrototype$3[TO_STRING];
+       var getFlags$1 = uncurryThis$t(regExpFlags$2);
 
+       var NOT_GENERIC = fails$s(function () { return n$ToString.call({ source: 'a', flags: 'b' }) != '/a/b'; });
+       // FF44- RegExp#toString has a wrong name
+       var INCORRECT_NAME = PROPER_FUNCTION_NAME$1 && n$ToString.name != TO_STRING;
 
+       // `RegExp.prototype.toString` method
+       // https://tc39.es/ecma262/#sec-regexp.prototype.tostring
+       if (NOT_GENERIC || INCORRECT_NAME) {
+         redefine$6(RegExp.prototype, TO_STRING, function toString() {
+           var R = anObject$8(this);
+           var p = $toString$1(R.source);
+           var rf = R.flags;
+           var f = $toString$1(rf === undefined && isPrototypeOf$2(RegExpPrototype$3, R) && !('flags' in RegExpPrototype$3) ? getFlags$1(R) : rf);
+           return '/' + p + '/' + f;
+         }, { unsafe: true });
+       }
 
+       // TODO: Remove from `core-js@4` since it's moved to entry points
 
+       var uncurryThis$s = functionUncurryThis;
+       var redefine$5 = redefine$h.exports;
+       var regexpExec$2 = regexpExec$3;
+       var fails$r = fails$V;
+       var wellKnownSymbol$5 = wellKnownSymbol$t;
+       var createNonEnumerableProperty$1 = createNonEnumerableProperty$b;
 
+       var SPECIES = wellKnownSymbol$5('species');
+       var RegExpPrototype$2 = RegExp.prototype;
 
+       var fixRegexpWellKnownSymbolLogic = function (KEY, exec, FORCED, SHAM) {
+         var SYMBOL = wellKnownSymbol$5(KEY);
 
-       var codeAt = stringMultibyte.codeAt;
-
-
-
-
-
-       var NativeURL = global$2.URL;
-       var URLSearchParams$1 = web_urlSearchParams.URLSearchParams;
-       var getInternalSearchParamsState = web_urlSearchParams.getState;
-       var setInternalState$1 = internalState.set;
-       var getInternalURLState = internalState.getterFor('URL');
-       var floor$2 = Math.floor;
-       var pow$1 = Math.pow;
-
-       var INVALID_AUTHORITY = 'Invalid authority';
-       var INVALID_SCHEME = 'Invalid scheme';
-       var INVALID_HOST = 'Invalid host';
-       var INVALID_PORT = 'Invalid port';
-
-       var ALPHA = /[A-Za-z]/;
-       // eslint-disable-next-line regexp/no-obscure-range -- safe
-       var ALPHANUMERIC = /[\d+-.A-Za-z]/;
-       var DIGIT = /\d/;
-       var HEX_START = /^0x/i;
-       var OCT = /^[0-7]+$/;
-       var DEC = /^\d+$/;
-       var HEX = /^[\dA-Fa-f]+$/;
-       /* 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 ]+$/g;
-       var TAB_AND_NEW_LINE = /[\t\n\r]/g;
-       /* eslint-enable no-control-regex -- safe */
-       var EOF;
+         var DELEGATES_TO_SYMBOL = !fails$r(function () {
+           // String methods call symbol-named RegEp methods
+           var O = {};
+           O[SYMBOL] = function () { return 7; };
+           return ''[KEY](O) != 7;
+         });
 
-       var parseHost = function (url, input) {
-         var result, codePoints, index;
-         if (input.charAt(0) == '[') {
-           if (input.charAt(input.length - 1) != ']') return INVALID_HOST;
-           result = parseIPv6(input.slice(1, -1));
-           if (!result) return INVALID_HOST;
-           url.host = result;
-         // opaque host
-         } else if (!isSpecial(url)) {
-           if (FORBIDDEN_HOST_CODE_POINT_EXCLUDING_PERCENT.test(input)) return INVALID_HOST;
-           result = '';
-           codePoints = arrayFrom(input);
-           for (index = 0; index < codePoints.length; index++) {
-             result += percentEncode(codePoints[index], C0ControlPercentEncodeSet);
-           }
-           url.host = result;
-         } else {
-           input = stringPunycodeToAscii(input);
-           if (FORBIDDEN_HOST_CODE_POINT.test(input)) return INVALID_HOST;
-           result = parseIPv4(input);
-           if (result === null) return INVALID_HOST;
-           url.host = result;
-         }
-       };
+         var DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails$r(function () {
+           // Symbol-named RegExp methods call .exec
+           var execCalled = false;
+           var re = /a/;
 
-       var parseIPv4 = function (input) {
-         var parts = input.split('.');
-         var partsLength, numbers, index, part, radix, number, ipv4;
-         if (parts.length && parts[parts.length - 1] == '') {
-           parts.pop();
-         }
-         partsLength = parts.length;
-         if (partsLength > 4) return input;
-         numbers = [];
-         for (index = 0; index < partsLength; index++) {
-           part = parts[index];
-           if (part == '') return input;
-           radix = 10;
-           if (part.length > 1 && part.charAt(0) == '0') {
-             radix = HEX_START.test(part) ? 16 : 8;
-             part = part.slice(radix == 8 ? 1 : 2);
-           }
-           if (part === '') {
-             number = 0;
-           } else {
-             if (!(radix == 10 ? DEC : radix == 8 ? OCT : HEX).test(part)) return input;
-             number = parseInt(part, radix);
+           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];
            }
-           numbers.push(number);
-         }
-         for (index = 0; index < partsLength; index++) {
-           number = numbers[index];
-           if (index == partsLength - 1) {
-             if (number >= pow$1(256, 5 - partsLength)) return null;
-           } else if (number > 255) return null;
-         }
-         ipv4 = numbers.pop();
-         for (index = 0; index < numbers.length; index++) {
-           ipv4 += numbers[index] * pow$1(256, 3 - index);
-         }
-         return ipv4;
-       };
 
-       // 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 compress = null;
-         var pointer = 0;
-         var value, length, numbersSeen, ipv4Piece, number, swaps, swap;
+           re.exec = function () { execCalled = true; return null; };
 
-         var char = function () {
-           return input.charAt(pointer);
-         };
+           re[SYMBOL]('');
+           return !execCalled;
+         });
 
-         if (char() == ':') {
-           if (input.charAt(1) != ':') return;
-           pointer += 2;
-           pieceIndex++;
-           compress = pieceIndex;
-         }
-         while (char()) {
-           if (pieceIndex == 8) return;
-           if (char() == ':') {
-             if (compress !== null) return;
-             pointer++;
-             pieceIndex++;
-             compress = pieceIndex;
-             continue;
-           }
-           value = length = 0;
-           while (length < 4 && HEX.test(char())) {
-             value = value * 16 + parseInt(char(), 16);
-             pointer++;
-             length++;
-           }
-           if (char() == '.') {
-             if (length == 0) return;
-             pointer -= length;
-             if (pieceIndex > 6) return;
-             numbersSeen = 0;
-             while (char()) {
-               ipv4Piece = null;
-               if (numbersSeen > 0) {
-                 if (char() == '.' && numbersSeen < 4) pointer++;
-                 else return;
-               }
-               if (!DIGIT.test(char())) return;
-               while (DIGIT.test(char())) {
-                 number = parseInt(char(), 10);
-                 if (ipv4Piece === null) ipv4Piece = number;
-                 else if (ipv4Piece == 0) return;
-                 else ipv4Piece = ipv4Piece * 10 + number;
-                 if (ipv4Piece > 255) return;
-                 pointer++;
+         if (
+           !DELEGATES_TO_SYMBOL ||
+           !DELEGATES_TO_EXEC ||
+           FORCED
+         ) {
+           var uncurriedNativeRegExpMethod = uncurryThis$s(/./[SYMBOL]);
+           var methods = exec(SYMBOL, ''[KEY], function (nativeMethod, regexp, str, arg2, forceStringMethod) {
+             var uncurriedNativeMethod = uncurryThis$s(nativeMethod);
+             var $exec = regexp.exec;
+             if ($exec === regexpExec$2 || $exec === RegExpPrototype$2.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: uncurriedNativeRegExpMethod(regexp, str, arg2) };
                }
-               address[pieceIndex] = address[pieceIndex] * 256 + ipv4Piece;
-               numbersSeen++;
-               if (numbersSeen == 2 || numbersSeen == 4) pieceIndex++;
+               return { done: true, value: uncurriedNativeMethod(str, regexp, arg2) };
              }
-             if (numbersSeen != 4) return;
-             break;
-           } else if (char() == ':') {
-             pointer++;
-             if (!char()) return;
-           } else if (char()) return;
-           address[pieceIndex++] = value;
-         }
-         if (compress !== null) {
-           swaps = pieceIndex - compress;
-           pieceIndex = 7;
-           while (pieceIndex != 0 && swaps > 0) {
-             swap = address[pieceIndex];
-             address[pieceIndex--] = address[compress + swaps - 1];
-             address[compress + --swaps] = swap;
-           }
-         } else if (pieceIndex != 8) return;
-         return address;
-       };
+             return { done: false };
+           });
 
-       var findLongestZeroSequence = function (ipv6) {
-         var maxIndex = null;
-         var maxLength = 1;
-         var currStart = null;
-         var currLength = 0;
-         var index = 0;
-         for (; index < 8; index++) {
-           if (ipv6[index] !== 0) {
-             if (currLength > maxLength) {
-               maxIndex = currStart;
-               maxLength = currLength;
-             }
-             currStart = null;
-             currLength = 0;
-           } else {
-             if (currStart === null) currStart = index;
-             ++currLength;
-           }
-         }
-         if (currLength > maxLength) {
-           maxIndex = currStart;
-           maxLength = currLength;
+           redefine$5(String.prototype, KEY, methods[0]);
+           redefine$5(RegExpPrototype$2, SYMBOL, methods[1]);
          }
-         return maxIndex;
-       };
 
-       var serializeHost = function (host) {
-         var result, index, compress, ignore0;
-         // ipv4
-         if (typeof host == 'number') {
-           result = [];
-           for (index = 0; index < 4; index++) {
-             result.unshift(host % 256);
-             host = floor$2(host / 256);
-           } return result.join('.');
-         // ipv6
-         } else if (typeof host == 'object') {
-           result = '';
-           compress = findLongestZeroSequence(host);
-           for (index = 0; index < 8; index++) {
-             if (ignore0 && host[index] === 0) continue;
-             if (ignore0) ignore0 = false;
-             if (compress === index) {
-               result += index ? ':' : '::';
-               ignore0 = true;
-             } else {
-               result += host[index].toString(16);
-               if (index < 7) result += ':';
-             }
-           }
-           return '[' + result + ']';
-         } return host;
+         if (SHAM) createNonEnumerableProperty$1(RegExpPrototype$2[SYMBOL], 'sham', true);
        };
 
-       var C0ControlPercentEncodeSet = {};
-       var fragmentPercentEncodeSet = objectAssign({}, C0ControlPercentEncodeSet, {
-         ' ': 1, '"': 1, '<': 1, '>': 1, '`': 1
-       });
-       var pathPercentEncodeSet = objectAssign({}, fragmentPercentEncodeSet, {
-         '#': 1, '?': 1, '{': 1, '}': 1
-       });
-       var userinfoPercentEncodeSet = objectAssign({}, pathPercentEncodeSet, {
-         '/': 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$1(set, char) ? char : encodeURIComponent(char);
-       };
+       var charAt$4 = stringMultibyte.charAt;
 
-       var specialSchemes = {
-         ftp: 21,
-         file: null,
-         http: 80,
-         https: 443,
-         ws: 80,
-         wss: 443
+       // `AdvanceStringIndex` abstract operation
+       // https://tc39.es/ecma262/#sec-advancestringindex
+       var advanceStringIndex$3 = function (S, index, unicode) {
+         return index + (unicode ? charAt$4(S, index).length : 1);
        };
 
-       var isSpecial = function (url) {
-         return has$1(specialSchemes, url.scheme);
-       };
+       var uncurryThis$r = functionUncurryThis;
+       var toObject$9 = toObject$i;
 
-       var includesCredentials = function (url) {
-         return url.username != '' || url.password != '';
-       };
+       var floor$3 = Math.floor;
+       var charAt$3 = uncurryThis$r(''.charAt);
+       var replace$5 = uncurryThis$r(''.replace);
+       var stringSlice$7 = uncurryThis$r(''.slice);
+       var SUBSTITUTION_SYMBOLS = /\$([$&'`]|\d{1,2}|<[^>]*>)/g;
+       var SUBSTITUTION_SYMBOLS_NO_NAMED = /\$([$&'`]|\d{1,2})/g;
 
-       var cannotHaveUsernamePasswordPort = function (url) {
-         return !url.host || url.cannotBeABaseURL || url.scheme == 'file';
+       // `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$9(namedCaptures);
+           symbols = SUBSTITUTION_SYMBOLS;
+         }
+         return replace$5(replacement, symbols, function (match, ch) {
+           var capture;
+           switch (charAt$3(ch, 0)) {
+             case '$': return '$';
+             case '&': return matched;
+             case '`': return stringSlice$7(str, 0, position);
+             case "'": return stringSlice$7(str, tailPos);
+             case '<':
+               capture = namedCaptures[stringSlice$7(ch, 1, -1)];
+               break;
+             default: // \d\d?
+               var n = +ch;
+               if (n === 0) return match;
+               if (n > m) {
+                 var f = floor$3(n / 10);
+                 if (f === 0) return match;
+                 if (f <= m) return captures[f - 1] === undefined ? charAt$3(ch, 1) : captures[f - 1] + charAt$3(ch, 1);
+                 return match;
+               }
+               capture = captures[n - 1];
+           }
+           return capture === undefined ? '' : capture;
+         });
        };
 
-       var isWindowsDriveLetter = function (string, normalized) {
-         var second;
-         return string.length == 2 && ALPHA.test(string.charAt(0))
-           && ((second = string.charAt(1)) == ':' || (!normalized && second == '|'));
-       };
+       var global$m = global$1o;
+       var call$8 = functionCall;
+       var anObject$7 = anObject$n;
+       var isCallable$4 = isCallable$r;
+       var classof$2 = classofRaw$1;
+       var regexpExec$1 = regexpExec$3;
 
-       var startsWithWindowsDriveLetter = function (string) {
-         var third;
-         return string.length > 1 && isWindowsDriveLetter(string.slice(0, 2)) && (
-           string.length == 2 ||
-           ((third = string.charAt(2)) === '/' || third === '\\' || third === '?' || third === '#')
-         );
-       };
+       var TypeError$7 = global$m.TypeError;
 
-       var shortenURLsPath = function (url) {
-         var path = url.path;
-         var pathSize = path.length;
-         if (pathSize && (url.scheme != 'file' || pathSize != 1 || !isWindowsDriveLetter(path[0], true))) {
-           path.pop();
+       // `RegExpExec` abstract operation
+       // https://tc39.es/ecma262/#sec-regexpexec
+       var regexpExecAbstract = function (R, S) {
+         var exec = R.exec;
+         if (isCallable$4(exec)) {
+           var result = call$8(exec, R, S);
+           if (result !== null) anObject$7(result);
+           return result;
          }
+         if (classof$2(R) === 'RegExp') return call$8(regexpExec$1, R, S);
+         throw TypeError$7('RegExp#exec called on incompatible receiver');
        };
 
-       var isSingleDot = function (segment) {
-         return segment === '.' || segment.toLowerCase() === '%2e';
-       };
+       var apply$3 = functionApply;
+       var call$7 = functionCall;
+       var uncurryThis$q = functionUncurryThis;
+       var fixRegExpWellKnownSymbolLogic$3 = fixRegexpWellKnownSymbolLogic;
+       var fails$q = fails$V;
+       var anObject$6 = anObject$n;
+       var isCallable$3 = isCallable$r;
+       var toIntegerOrInfinity$3 = toIntegerOrInfinity$b;
+       var toLength$5 = toLength$c;
+       var toString$f = toString$k;
+       var requireObjectCoercible$a = requireObjectCoercible$e;
+       var advanceStringIndex$2 = advanceStringIndex$3;
+       var getMethod$3 = getMethod$7;
+       var getSubstitution = getSubstitution$1;
+       var regExpExec$3 = regexpExecAbstract;
+       var wellKnownSymbol$4 = wellKnownSymbol$t;
+
+       var REPLACE = wellKnownSymbol$4('replace');
+       var max$2 = Math.max;
+       var min$5 = Math.min;
+       var concat$2 = uncurryThis$q([].concat);
+       var push$6 = uncurryThis$q([].push);
+       var stringIndexOf$2 = uncurryThis$q(''.indexOf);
+       var stringSlice$6 = uncurryThis$q(''.slice);
 
-       var isDoubleDot = function (segment) {
-         segment = segment.toLowerCase();
-         return segment === '..' || segment === '%2e.' || segment === '.%2e' || segment === '%2e%2e';
+       var maybeToString = function (it) {
+         return it === undefined ? it : String(it);
        };
 
-       // States:
-       var SCHEME_START = {};
-       var SCHEME = {};
-       var NO_SCHEME = {};
-       var SPECIAL_RELATIVE_OR_AUTHORITY = {};
-       var PATH_OR_AUTHORITY = {};
-       var RELATIVE = {};
-       var RELATIVE_SLASH = {};
-       var SPECIAL_AUTHORITY_SLASHES = {};
-       var SPECIAL_AUTHORITY_IGNORE_SLASHES = {};
-       var AUTHORITY = {};
-       var HOST = {};
-       var HOSTNAME = {};
-       var PORT = {};
-       var FILE = {};
-       var FILE_SLASH = {};
-       var FILE_HOST = {};
-       var PATH_START = {};
-       var PATH = {};
-       var CANNOT_BE_A_BASE_URL_PATH = {};
-       var QUERY = {};
-       var FRAGMENT = {};
+       // 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';
+       })();
 
-       // eslint-disable-next-line max-statements -- TODO
-       var parseURL = function (url, input, stateOverride, base) {
-         var state = stateOverride || SCHEME_START;
-         var pointer = 0;
-         var buffer = '';
-         var seenAt = false;
-         var seenBracket = false;
-         var seenPasswordToken = false;
-         var codePoints, char, bufferCodePoints, failure;
-
-         if (!stateOverride) {
-           url.scheme = '';
-           url.username = '';
-           url.password = '';
-           url.host = null;
-           url.port = null;
-           url.path = [];
-           url.query = null;
-           url.fragment = null;
-           url.cannotBeABaseURL = false;
-           input = input.replace(LEADING_AND_TRAILING_C0_CONTROL_OR_SPACE, '');
-         }
-
-         input = input.replace(TAB_AND_NEW_LINE, '');
-
-         codePoints = arrayFrom(input);
-
-         while (pointer <= codePoints.length) {
-           char = codePoints[pointer];
-           switch (state) {
-             case SCHEME_START:
-               if (char && ALPHA.test(char)) {
-                 buffer += char.toLowerCase();
-                 state = SCHEME;
-               } else if (!stateOverride) {
-                 state = NO_SCHEME;
-                 continue;
-               } else return INVALID_SCHEME;
-               break;
+       // 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;
+       })();
 
-             case SCHEME:
-               if (char && (ALPHANUMERIC.test(char) || char == '+' || char == '-' || char == '.')) {
-                 buffer += char.toLowerCase();
-               } else if (char == ':') {
-                 if (stateOverride && (
-                   (isSpecial(url) != has$1(specialSchemes, buffer)) ||
-                   (buffer == 'file' && (includesCredentials(url) || url.port !== null)) ||
-                   (url.scheme == 'file' && !url.host)
-                 )) return;
-                 url.scheme = buffer;
-                 if (stateOverride) {
-                   if (isSpecial(url) && specialSchemes[url.scheme] == url.port) url.port = null;
-                   return;
-                 }
-                 buffer = '';
-                 if (url.scheme == 'file') {
-                   state = FILE;
-                 } else if (isSpecial(url) && base && base.scheme == url.scheme) {
-                   state = SPECIAL_RELATIVE_OR_AUTHORITY;
-                 } else if (isSpecial(url)) {
-                   state = SPECIAL_AUTHORITY_SLASHES;
-                 } else if (codePoints[pointer + 1] == '/') {
-                   state = PATH_OR_AUTHORITY;
-                   pointer++;
-                 } else {
-                   url.cannotBeABaseURL = true;
-                   url.path.push('');
-                   state = CANNOT_BE_A_BASE_URL_PATH;
-                 }
-               } else if (!stateOverride) {
-                 buffer = '';
-                 state = NO_SCHEME;
-                 pointer = 0;
-                 continue;
-               } else return INVALID_SCHEME;
-               break;
+       var REPLACE_SUPPORTS_NAMED_GROUPS = !fails$q(function () {
+         var re = /./;
+         re.exec = function () {
+           var result = [];
+           result.groups = { a: '7' };
+           return result;
+         };
+         // eslint-disable-next-line regexp/no-useless-dollar-replacements -- false positive
+         return ''.replace(re, '$<a>') !== '7';
+       });
 
-             case NO_SCHEME:
-               if (!base || (base.cannotBeABaseURL && char != '#')) return INVALID_SCHEME;
-               if (base.cannotBeABaseURL && char == '#') {
-                 url.scheme = base.scheme;
-                 url.path = base.path.slice();
-                 url.query = base.query;
-                 url.fragment = '';
-                 url.cannotBeABaseURL = true;
-                 state = FRAGMENT;
-                 break;
-               }
-               state = base.scheme == 'file' ? FILE : RELATIVE;
-               continue;
+       // @@replace logic
+       fixRegExpWellKnownSymbolLogic$3('replace', function (_, nativeReplace, maybeCallNative) {
+         var UNSAFE_SUBSTITUTE = REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE ? '$' : '$0';
 
-             case SPECIAL_RELATIVE_OR_AUTHORITY:
-               if (char == '/' && codePoints[pointer + 1] == '/') {
-                 state = SPECIAL_AUTHORITY_IGNORE_SLASHES;
-                 pointer++;
-               } else {
-                 state = RELATIVE;
-                 continue;
-               } break;
+         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 : getMethod$3(searchValue, REPLACE);
+             return replacer
+               ? call$7(replacer, searchValue, O, replaceValue)
+               : call$7(nativeReplace, toString$f(O), searchValue, replaceValue);
+           },
+           // `RegExp.prototype[@@replace]` method
+           // https://tc39.es/ecma262/#sec-regexp.prototype-@@replace
+           function (string, replaceValue) {
+             var rx = anObject$6(this);
+             var S = toString$f(string);
 
-             case PATH_OR_AUTHORITY:
-               if (char == '/') {
-                 state = AUTHORITY;
-                 break;
-               } else {
-                 state = PATH;
-                 continue;
-               }
+             if (
+               typeof replaceValue == 'string' &&
+               stringIndexOf$2(replaceValue, UNSAFE_SUBSTITUTE) === -1 &&
+               stringIndexOf$2(replaceValue, '$<') === -1
+             ) {
+               var res = maybeCallNative(nativeReplace, rx, S, replaceValue);
+               if (res.done) return res.value;
+             }
 
-             case RELATIVE:
-               url.scheme = base.scheme;
-               if (char == EOF) {
-                 url.username = base.username;
-                 url.password = base.password;
-                 url.host = base.host;
-                 url.port = base.port;
-                 url.path = base.path.slice();
-                 url.query = base.query;
-               } else if (char == '/' || (char == '\\' && isSpecial(url))) {
-                 state = RELATIVE_SLASH;
-               } else if (char == '?') {
-                 url.username = base.username;
-                 url.password = base.password;
-                 url.host = base.host;
-                 url.port = base.port;
-                 url.path = base.path.slice();
-                 url.query = '';
-                 state = QUERY;
-               } else if (char == '#') {
-                 url.username = base.username;
-                 url.password = base.password;
-                 url.host = base.host;
-                 url.port = base.port;
-                 url.path = base.path.slice();
-                 url.query = base.query;
-                 url.fragment = '';
-                 state = FRAGMENT;
-               } else {
-                 url.username = base.username;
-                 url.password = base.password;
-                 url.host = base.host;
-                 url.port = base.port;
-                 url.path = base.path.slice();
-                 url.path.pop();
-                 state = PATH;
-                 continue;
-               } break;
+             var functionalReplace = isCallable$3(replaceValue);
+             if (!functionalReplace) replaceValue = toString$f(replaceValue);
 
-             case RELATIVE_SLASH:
-               if (isSpecial(url) && (char == '/' || char == '\\')) {
-                 state = SPECIAL_AUTHORITY_IGNORE_SLASHES;
-               } else if (char == '/') {
-                 state = AUTHORITY;
-               } else {
-                 url.username = base.username;
-                 url.password = base.password;
-                 url.host = base.host;
-                 url.port = base.port;
-                 state = PATH;
-                 continue;
-               } break;
+             var global = rx.global;
+             if (global) {
+               var fullUnicode = rx.unicode;
+               rx.lastIndex = 0;
+             }
+             var results = [];
+             while (true) {
+               var result = regExpExec$3(rx, S);
+               if (result === null) break;
 
-             case SPECIAL_AUTHORITY_SLASHES:
-               state = SPECIAL_AUTHORITY_IGNORE_SLASHES;
-               if (char != '/' || buffer.charAt(pointer + 1) != '/') continue;
-               pointer++;
-               break;
+               push$6(results, result);
+               if (!global) break;
 
-             case SPECIAL_AUTHORITY_IGNORE_SLASHES:
-               if (char != '/' && char != '\\') {
-                 state = AUTHORITY;
-                 continue;
-               } break;
-
-             case AUTHORITY:
-               if (char == '@') {
-                 if (seenAt) buffer = '%40' + buffer;
-                 seenAt = true;
-                 bufferCodePoints = arrayFrom(buffer);
-                 for (var i = 0; i < bufferCodePoints.length; i++) {
-                   var codePoint = bufferCodePoints[i];
-                   if (codePoint == ':' && !seenPasswordToken) {
-                     seenPasswordToken = true;
-                     continue;
-                   }
-                   var encodedCodePoints = percentEncode(codePoint, userinfoPercentEncodeSet);
-                   if (seenPasswordToken) url.password += encodedCodePoints;
-                   else url.username += encodedCodePoints;
-                 }
-                 buffer = '';
-               } else if (
-                 char == EOF || char == '/' || char == '?' || char == '#' ||
-                 (char == '\\' && isSpecial(url))
-               ) {
-                 if (seenAt && buffer == '') return INVALID_AUTHORITY;
-                 pointer -= arrayFrom(buffer).length + 1;
-                 buffer = '';
-                 state = HOST;
-               } else buffer += char;
-               break;
+               var matchStr = toString$f(result[0]);
+               if (matchStr === '') rx.lastIndex = advanceStringIndex$2(S, toLength$5(rx.lastIndex), fullUnicode);
+             }
 
-             case HOST:
-             case HOSTNAME:
-               if (stateOverride && url.scheme == 'file') {
-                 state = FILE_HOST;
-                 continue;
-               } else if (char == ':' && !seenBracket) {
-                 if (buffer == '') return INVALID_HOST;
-                 failure = parseHost(url, buffer);
-                 if (failure) return failure;
-                 buffer = '';
-                 state = PORT;
-                 if (stateOverride == HOSTNAME) return;
-               } else if (
-                 char == EOF || char == '/' || char == '?' || char == '#' ||
-                 (char == '\\' && isSpecial(url))
-               ) {
-                 if (isSpecial(url) && buffer == '') return INVALID_HOST;
-                 if (stateOverride && buffer == '' && (includesCredentials(url) || url.port !== null)) return;
-                 failure = parseHost(url, buffer);
-                 if (failure) return failure;
-                 buffer = '';
-                 state = PATH_START;
-                 if (stateOverride) return;
-                 continue;
-               } else {
-                 if (char == '[') seenBracket = true;
-                 else if (char == ']') seenBracket = false;
-                 buffer += char;
-               } break;
-
-             case PORT:
-               if (DIGIT.test(char)) {
-                 buffer += char;
-               } else if (
-                 char == EOF || char == '/' || char == '?' || char == '#' ||
-                 (char == '\\' && isSpecial(url)) ||
-                 stateOverride
-               ) {
-                 if (buffer != '') {
-                   var port = parseInt(buffer, 10);
-                   if (port > 0xFFFF) return INVALID_PORT;
-                   url.port = (isSpecial(url) && port === specialSchemes[url.scheme]) ? null : port;
-                   buffer = '';
-                 }
-                 if (stateOverride) return;
-                 state = PATH_START;
-                 continue;
-               } else return INVALID_PORT;
-               break;
+             var accumulatedResult = '';
+             var nextSourcePosition = 0;
+             for (var i = 0; i < results.length; i++) {
+               result = results[i];
 
-             case FILE:
-               url.scheme = 'file';
-               if (char == '/' || char == '\\') state = FILE_SLASH;
-               else if (base && base.scheme == 'file') {
-                 if (char == EOF) {
-                   url.host = base.host;
-                   url.path = base.path.slice();
-                   url.query = base.query;
-                 } else if (char == '?') {
-                   url.host = base.host;
-                   url.path = base.path.slice();
-                   url.query = '';
-                   state = QUERY;
-                 } else if (char == '#') {
-                   url.host = base.host;
-                   url.path = base.path.slice();
-                   url.query = base.query;
-                   url.fragment = '';
-                   state = FRAGMENT;
-                 } else {
-                   if (!startsWithWindowsDriveLetter(codePoints.slice(pointer).join(''))) {
-                     url.host = base.host;
-                     url.path = base.path.slice();
-                     shortenURLsPath(url);
-                   }
-                   state = PATH;
-                   continue;
-                 }
+               var matched = toString$f(result[0]);
+               var position = max$2(min$5(toIntegerOrInfinity$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++) push$6(captures, maybeToString(result[j]));
+               var namedCaptures = result.groups;
+               if (functionalReplace) {
+                 var replacerArgs = concat$2([matched], captures, position, S);
+                 if (namedCaptures !== undefined) push$6(replacerArgs, namedCaptures);
+                 var replacement = toString$f(apply$3(replaceValue, undefined, replacerArgs));
                } else {
-                 state = PATH;
-                 continue;
-               } break;
-
-             case FILE_SLASH:
-               if (char == '/' || char == '\\') {
-                 state = FILE_HOST;
-                 break;
+                 replacement = getSubstitution(matched, S, position, captures, namedCaptures, replaceValue);
                }
-               if (base && base.scheme == 'file' && !startsWithWindowsDriveLetter(codePoints.slice(pointer).join(''))) {
-                 if (isWindowsDriveLetter(base.path[0], true)) url.path.push(base.path[0]);
-                 else url.host = base.host;
+               if (position >= nextSourcePosition) {
+                 accumulatedResult += stringSlice$6(S, nextSourcePosition, position) + replacement;
+                 nextSourcePosition = position + matched.length;
                }
-               state = PATH;
-               continue;
+             }
+             return accumulatedResult + stringSlice$6(S, nextSourcePosition);
+           }
+         ];
+       }, !REPLACE_SUPPORTS_NAMED_GROUPS || !REPLACE_KEEPS_$0 || REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE);
 
-             case FILE_HOST:
-               if (char == EOF || char == '/' || char == '\\' || char == '?' || char == '#') {
-                 if (!stateOverride && isWindowsDriveLetter(buffer)) {
-                   state = PATH;
-                 } else if (buffer == '') {
-                   url.host = '';
-                   if (stateOverride) return;
-                   state = PATH_START;
-                 } else {
-                   failure = parseHost(url, buffer);
-                   if (failure) return failure;
-                   if (url.host == 'localhost') url.host = '';
-                   if (stateOverride) return;
-                   buffer = '';
-                   state = PATH_START;
-                 } continue;
-               } else buffer += char;
-               break;
+       var isObject$c = isObject$s;
+       var classof$1 = classofRaw$1;
+       var wellKnownSymbol$3 = wellKnownSymbol$t;
 
-             case PATH_START:
-               if (isSpecial(url)) {
-                 state = PATH;
-                 if (char != '/' && char != '\\') continue;
-               } else if (!stateOverride && char == '?') {
-                 url.query = '';
-                 state = QUERY;
-               } else if (!stateOverride && char == '#') {
-                 url.fragment = '';
-                 state = FRAGMENT;
-               } else if (char != EOF) {
-                 state = PATH;
-                 if (char != '/') continue;
-               } break;
-
-             case PATH:
-               if (
-                 char == EOF || char == '/' ||
-                 (char == '\\' && isSpecial(url)) ||
-                 (!stateOverride && (char == '?' || char == '#'))
-               ) {
-                 if (isDoubleDot(buffer)) {
-                   shortenURLsPath(url);
-                   if (char != '/' && !(char == '\\' && isSpecial(url))) {
-                     url.path.push('');
-                   }
-                 } else if (isSingleDot(buffer)) {
-                   if (char != '/' && !(char == '\\' && isSpecial(url))) {
-                     url.path.push('');
-                   }
-                 } else {
-                   if (url.scheme == 'file' && !url.path.length && isWindowsDriveLetter(buffer)) {
-                     if (url.host) url.host = '';
-                     buffer = buffer.charAt(0) + ':'; // normalize windows drive letter
-                   }
-                   url.path.push(buffer);
-                 }
-                 buffer = '';
-                 if (url.scheme == 'file' && (char == EOF || char == '?' || char == '#')) {
-                   while (url.path.length > 1 && url.path[0] === '') {
-                     url.path.shift();
-                   }
-                 }
-                 if (char == '?') {
-                   url.query = '';
-                   state = QUERY;
-                 } else if (char == '#') {
-                   url.fragment = '';
-                   state = FRAGMENT;
-                 }
-               } else {
-                 buffer += percentEncode(char, pathPercentEncodeSet);
-               } break;
-
-             case CANNOT_BE_A_BASE_URL_PATH:
-               if (char == '?') {
-                 url.query = '';
-                 state = QUERY;
-               } else if (char == '#') {
-                 url.fragment = '';
-                 state = FRAGMENT;
-               } else if (char != EOF) {
-                 url.path[0] += percentEncode(char, C0ControlPercentEncodeSet);
-               } break;
-
-             case QUERY:
-               if (!stateOverride && char == '#') {
-                 url.fragment = '';
-                 state = FRAGMENT;
-               } else if (char != EOF) {
-                 if (char == "'" && isSpecial(url)) url.query += '%27';
-                 else if (char == '#') url.query += '%23';
-                 else url.query += percentEncode(char, C0ControlPercentEncodeSet);
-               } break;
-
-             case FRAGMENT:
-               if (char != EOF) url.fragment += percentEncode(char, fragmentPercentEncodeSet);
-               break;
-           }
-
-           pointer++;
-         }
-       };
-
-       // `URL` constructor
-       // https://url.spec.whatwg.org/#url-class
-       var URLConstructor = function URL(url /* , base */) {
-         var that = anInstance(this, URLConstructor, 'URL');
-         var base = arguments.length > 1 ? arguments[1] : undefined;
-         var urlString = String(url);
-         var state = setInternalState$1(that, { type: 'URL' });
-         var baseState, failure;
-         if (base !== undefined) {
-           if (base instanceof URLConstructor) baseState = getInternalURLState(base);
-           else {
-             failure = parseURL(baseState = {}, String(base));
-             if (failure) throw TypeError(failure);
-           }
-         }
-         failure = parseURL(state, urlString, null, baseState);
-         if (failure) throw TypeError(failure);
-         var searchParams = state.searchParams = new URLSearchParams$1();
-         var searchParamsState = getInternalSearchParamsState(searchParams);
-         searchParamsState.updateSearchParams(state.query);
-         searchParamsState.updateURL = function () {
-           state.query = String(searchParams) || null;
-         };
-         if (!descriptors) {
-           that.href = serializeURL.call(that);
-           that.origin = getOrigin.call(that);
-           that.protocol = getProtocol.call(that);
-           that.username = getUsername.call(that);
-           that.password = getPassword.call(that);
-           that.host = getHost.call(that);
-           that.hostname = getHostname.call(that);
-           that.port = getPort.call(that);
-           that.pathname = getPathname.call(that);
-           that.search = getSearch.call(that);
-           that.searchParams = getSearchParams.call(that);
-           that.hash = getHash.call(that);
-         }
-       };
-
-       var URLPrototype = URLConstructor.prototype;
-
-       var serializeURL = function () {
-         var url = getInternalURLState(this);
-         var scheme = url.scheme;
-         var username = url.username;
-         var password = url.password;
-         var host = url.host;
-         var port = url.port;
-         var path = url.path;
-         var query = url.query;
-         var fragment = url.fragment;
-         var output = scheme + ':';
-         if (host !== null) {
-           output += '//';
-           if (includesCredentials(url)) {
-             output += username + (password ? ':' + password : '') + '@';
-           }
-           output += serializeHost(host);
-           if (port !== null) output += ':' + port;
-         } else if (scheme == 'file') output += '//';
-         output += url.cannotBeABaseURL ? path[0] : path.length ? '/' + path.join('/') : '';
-         if (query !== null) output += '?' + query;
-         if (fragment !== null) output += '#' + fragment;
-         return output;
-       };
-
-       var getOrigin = function () {
-         var url = getInternalURLState(this);
-         var scheme = url.scheme;
-         var port = url.port;
-         if (scheme == 'blob') try {
-           return new URLConstructor(scheme.path[0]).origin;
-         } catch (error) {
-           return 'null';
-         }
-         if (scheme == 'file' || !isSpecial(url)) return 'null';
-         return scheme + '://' + serializeHost(url.host) + (port !== null ? ':' + port : '');
-       };
-
-       var getProtocol = function () {
-         return getInternalURLState(this).scheme + ':';
-       };
-
-       var getUsername = function () {
-         return getInternalURLState(this).username;
-       };
-
-       var getPassword = function () {
-         return getInternalURLState(this).password;
-       };
-
-       var getHost = function () {
-         var url = getInternalURLState(this);
-         var host = url.host;
-         var port = url.port;
-         return host === null ? ''
-           : port === null ? serializeHost(host)
-           : serializeHost(host) + ':' + port;
-       };
-
-       var getHostname = function () {
-         var host = getInternalURLState(this).host;
-         return host === null ? '' : serializeHost(host);
-       };
-
-       var getPort = function () {
-         var port = getInternalURLState(this).port;
-         return port === null ? '' : String(port);
-       };
-
-       var getPathname = function () {
-         var url = getInternalURLState(this);
-         var path = url.path;
-         return url.cannotBeABaseURL ? path[0] : path.length ? '/' + path.join('/') : '';
-       };
-
-       var getSearch = function () {
-         var query = getInternalURLState(this).query;
-         return query ? '?' + query : '';
-       };
-
-       var getSearchParams = function () {
-         return getInternalURLState(this).searchParams;
-       };
-
-       var getHash = function () {
-         var fragment = getInternalURLState(this).fragment;
-         return fragment ? '#' + fragment : '';
-       };
-
-       var accessorDescriptor = function (getter, setter) {
-         return { get: getter, set: setter, configurable: true, enumerable: true };
-       };
-
-       if (descriptors) {
-         objectDefineProperties(URLPrototype, {
-           // `URL.prototype.href` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-href
-           href: accessorDescriptor(serializeURL, function (href) {
-             var url = getInternalURLState(this);
-             var urlString = String(href);
-             var failure = parseURL(url, urlString);
-             if (failure) throw TypeError(failure);
-             getInternalSearchParamsState(url.searchParams).updateSearchParams(url.query);
-           }),
-           // `URL.prototype.origin` getter
-           // https://url.spec.whatwg.org/#dom-url-origin
-           origin: accessorDescriptor(getOrigin),
-           // `URL.prototype.protocol` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-protocol
-           protocol: accessorDescriptor(getProtocol, function (protocol) {
-             var url = getInternalURLState(this);
-             parseURL(url, String(protocol) + ':', SCHEME_START);
-           }),
-           // `URL.prototype.username` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-username
-           username: accessorDescriptor(getUsername, function (username) {
-             var url = getInternalURLState(this);
-             var codePoints = arrayFrom(String(username));
-             if (cannotHaveUsernamePasswordPort(url)) return;
-             url.username = '';
-             for (var i = 0; i < codePoints.length; i++) {
-               url.username += percentEncode(codePoints[i], userinfoPercentEncodeSet);
-             }
-           }),
-           // `URL.prototype.password` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-password
-           password: accessorDescriptor(getPassword, function (password) {
-             var url = getInternalURLState(this);
-             var codePoints = arrayFrom(String(password));
-             if (cannotHaveUsernamePasswordPort(url)) return;
-             url.password = '';
-             for (var i = 0; i < codePoints.length; i++) {
-               url.password += percentEncode(codePoints[i], userinfoPercentEncodeSet);
-             }
-           }),
-           // `URL.prototype.host` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-host
-           host: accessorDescriptor(getHost, function (host) {
-             var url = getInternalURLState(this);
-             if (url.cannotBeABaseURL) return;
-             parseURL(url, String(host), HOST);
-           }),
-           // `URL.prototype.hostname` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-hostname
-           hostname: accessorDescriptor(getHostname, function (hostname) {
-             var url = getInternalURLState(this);
-             if (url.cannotBeABaseURL) return;
-             parseURL(url, String(hostname), HOSTNAME);
-           }),
-           // `URL.prototype.port` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-port
-           port: accessorDescriptor(getPort, function (port) {
-             var url = getInternalURLState(this);
-             if (cannotHaveUsernamePasswordPort(url)) return;
-             port = String(port);
-             if (port == '') url.port = null;
-             else parseURL(url, port, PORT);
-           }),
-           // `URL.prototype.pathname` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-pathname
-           pathname: accessorDescriptor(getPathname, function (pathname) {
-             var url = getInternalURLState(this);
-             if (url.cannotBeABaseURL) return;
-             url.path = [];
-             parseURL(url, pathname + '', PATH_START);
-           }),
-           // `URL.prototype.search` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-search
-           search: accessorDescriptor(getSearch, function (search) {
-             var url = getInternalURLState(this);
-             search = String(search);
-             if (search == '') {
-               url.query = null;
-             } else {
-               if ('?' == search.charAt(0)) search = search.slice(1);
-               url.query = '';
-               parseURL(url, search, QUERY);
-             }
-             getInternalSearchParamsState(url.searchParams).updateSearchParams(url.query);
-           }),
-           // `URL.prototype.searchParams` getter
-           // https://url.spec.whatwg.org/#dom-url-searchparams
-           searchParams: accessorDescriptor(getSearchParams),
-           // `URL.prototype.hash` accessors pair
-           // https://url.spec.whatwg.org/#dom-url-hash
-           hash: accessorDescriptor(getHash, function (hash) {
-             var url = getInternalURLState(this);
-             hash = String(hash);
-             if (hash == '') {
-               url.fragment = null;
-               return;
-             }
-             if ('#' == hash.charAt(0)) hash = hash.slice(1);
-             url.fragment = '';
-             parseURL(url, hash, FRAGMENT);
-           })
-         });
-       }
-
-       // `URL.prototype.toJSON` method
-       // https://url.spec.whatwg.org/#dom-url-tojson
-       redefine(URLPrototype, 'toJSON', function toJSON() {
-         return serializeURL.call(this);
-       }, { enumerable: true });
-
-       // `URL.prototype.toString` method
-       // https://url.spec.whatwg.org/#URL-stringification-behavior
-       redefine(URLPrototype, 'toString', function toString() {
-         return serializeURL.call(this);
-       }, { enumerable: true });
-
-       if (NativeURL) {
-         var nativeCreateObjectURL = NativeURL.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 -- required for `.length`
-         if (nativeCreateObjectURL) redefine(URLConstructor, 'createObjectURL', function createObjectURL(blob) {
-           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 -- required for `.length`
-         if (nativeRevokeObjectURL) redefine(URLConstructor, 'revokeObjectURL', function revokeObjectURL(url) {
-           return nativeRevokeObjectURL.apply(NativeURL, arguments);
-         });
-       }
-
-       setToStringTag(URLConstructor, 'URL');
-
-       _export({ global: true, forced: !nativeUrl, sham: !descriptors }, {
-         URL: URLConstructor
-       });
-
-       // `RegExp.prototype.flags` getter implementation
-       // https://tc39.es/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';
-         return result;
-       };
-
-       var TO_STRING = 'toString';
-       var RegExpPrototype$2 = RegExp.prototype;
-       var nativeToString = RegExpPrototype$2[TO_STRING];
-
-       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;
-
-       // `RegExp.prototype.toString` method
-       // https://tc39.es/ecma262/#sec-regexp.prototype.tostring
-       if (NOT_GENERIC || INCORRECT_NAME) {
-         redefine(RegExp.prototype, TO_STRING, 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$2) ? regexpFlags.call(R) : rf);
-           return '/' + p + '/' + f;
-         }, { unsafe: true });
-       }
-
-       // babel-minify transpiles RegExp('a', 'y') -> /a/y and it causes SyntaxError,
-       var RE = function (s, f) {
-         return RegExp(s, f);
-       };
-
-       var UNSUPPORTED_Y$3 = fails(function () {
-         var re = RE('a', 'y');
-         re.lastIndex = 2;
-         return re.exec('abcd') != null;
-       });
-
-       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 regexpStickyHelpers = {
-               UNSUPPORTED_Y: UNSUPPORTED_Y$3,
-               BROKEN_CARET: BROKEN_CARET
-       };
-
-       var regexpUnsupportedDotAll = fails(function () {
-         // babel-minify transpiles RegExp('.', 's') -> /./s and it causes SyntaxError
-         var re = RegExp('.', (typeof '').charAt(0));
-         return !(re.dotAll && re.exec('\n') && re.flags === 's');
-       });
-
-       var regexpUnsupportedNcg = fails(function () {
-         // babel-minify transpiles RegExp('.', 'g') -> /./g and it causes SyntaxError
-         var re = RegExp('(?<a>b)', (typeof '').charAt(5));
-         return re.exec('b').groups.a !== 'b' ||
-           'b'.replace(re, '$<a>c') !== 'bc';
-       });
-
-       /* eslint-disable regexp/no-assertion-capturing-group, regexp/no-empty-group, regexp/no-lazy-ends -- testing */
-       /* eslint-disable regexp/no-useless-quantifier -- testing */
-
-
-
-
-       var getInternalState = internalState.get;
-
-
-
-       var nativeExec = RegExp.prototype.exec;
-       var nativeReplace = shared('native-string-replace', String.prototype.replace);
-
-       var patchedExec = nativeExec;
-
-       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 UNSUPPORTED_Y$2 = regexpStickyHelpers.UNSUPPORTED_Y || regexpStickyHelpers.BROKEN_CARET;
-
-       // nonparticipating capturing group, copied from es5-shim's String#split patch.
-       var NPCG_INCLUDED = /()??/.exec('')[1] !== undefined;
-
-       var PATCH = UPDATES_LAST_INDEX_WRONG || NPCG_INCLUDED || UNSUPPORTED_Y$2 || regexpUnsupportedDotAll || regexpUnsupportedNcg;
-
-       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;
-           }
-
-           var groups = state.groups;
-           var sticky = UNSUPPORTED_Y$2 && re.sticky;
-           var flags = regexpFlags.call(re);
-           var source = re.source;
-           var charsAdded = 0;
-           var strCopy = str;
-
-           if (sticky) {
-             flags = flags.replace('y', '');
-             if (flags.indexOf('g') === -1) {
-               flags += 'g';
-             }
-
-             strCopy = String(str).slice(re.lastIndex);
-             // Support anchored sticky behavior.
-             if (re.lastIndex > 0 && (!re.multiline || re.multiline && str[re.lastIndex - 1] !== '\n')) {
-               source = '(?: ' + source + ')';
-               strCopy = ' ' + strCopy;
-               charsAdded++;
-             }
-             // ^(? + rx + ) is needed, in combination with some str slicing, to
-             // simulate the 'y' flag.
-             reCopy = new RegExp('^(?:' + source + ')', flags);
-           }
-
-           if (NPCG_INCLUDED) {
-             reCopy = new RegExp('^' + source + '$(?!\\s)', flags);
-           }
-           if (UPDATES_LAST_INDEX_WRONG) lastIndex = re.lastIndex;
-
-           match = nativeExec.call(sticky ? reCopy : re, strCopy);
-
-           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;
-               }
-             });
-           }
-
-           if (match && groups) {
-             match.groups = object = objectCreate(null);
-             for (i = 0; i < groups.length; i++) {
-               group = groups[i];
-               object[group[0]] = match[group[1]];
-             }
-           }
-
-           return match;
-         };
-       }
-
-       var regexpExec = patchedExec;
-
-       // `RegExp.prototype.exec` method
-       // https://tc39.es/ecma262/#sec-regexp.prototype.exec
-       _export({ target: 'RegExp', proto: true, forced: /./.exec !== regexpExec }, {
-         exec: regexpExec
-       });
-
-       // TODO: Remove from `core-js@4` since it's moved to entry points
-
-
-
-
-
-
-
-       var SPECIES = wellKnownSymbol('species');
-       var RegExpPrototype$1 = RegExp.prototype;
-
-       var fixRegexpWellKnownSymbolLogic = function (KEY, exec, FORCED, SHAM) {
-         var SYMBOL = wellKnownSymbol(KEY);
-
-         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 DELEGATES_TO_EXEC = DELEGATES_TO_SYMBOL && !fails(function () {
-           // Symbol-named RegExp methods call .exec
-           var execCalled = false;
-           var re = /a/;
-
-           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];
-           }
-
-           re.exec = function () { execCalled = true; return null; };
-
-           re[SYMBOL]('');
-           return !execCalled;
-         });
-
-         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 || $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 };
-           });
-
-           redefine(String.prototype, KEY, methods[0]);
-           redefine(RegExpPrototype$1, SYMBOL, methods[1]);
-         }
-
-         if (SHAM) createNonEnumerableProperty(RegExpPrototype$1[SYMBOL], 'sham', true);
-       };
-
-       var charAt = stringMultibyte.charAt;
-
-       // `AdvanceStringIndex` abstract operation
-       // https://tc39.es/ecma262/#sec-advancestringindex
-       var advanceStringIndex = function (S, index, unicode) {
-         return index + (unicode ? charAt(S, index).length : 1);
-       };
-
-       var floor$1 = Math.floor;
-       var replace = ''.replace;
-       var SUBSTITUTION_SYMBOLS = /\$([$&'`]|\d{1,2}|<[^>]*>)/g;
-       var SUBSTITUTION_SYMBOLS_NO_NAMED = /\$([$&'`]|\d{1,2})/g;
-
-       // `GetSubstitution` abstract operation
-       // https://tc39.es/ecma262/#sec-getsubstitution
-       var getSubstitution = function (matched, str, position, captures, namedCaptures, replacement) {
-         var tailPos = position + matched.length;
-         var m = captures.length;
-         var symbols = SUBSTITUTION_SYMBOLS_NO_NAMED;
-         if (namedCaptures !== undefined) {
-           namedCaptures = toObject(namedCaptures);
-           symbols = SUBSTITUTION_SYMBOLS;
-         }
-         return replace.call(replacement, symbols, function (match, ch) {
-           var capture;
-           switch (ch.charAt(0)) {
-             case '$': 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;
-         });
-       };
-
-       // `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;
-         }
-
-         if (classofRaw(R) !== 'RegExp') {
-           throw TypeError('RegExp#exec called on incompatible receiver');
-         }
-
-         return regexpExec.call(R, S);
-       };
-
-       var REPLACE = wellKnownSymbol('replace');
-       var max$2 = Math.max;
-       var min$5 = Math.min;
-
-       var maybeToString = function (it) {
-         return it === undefined ? it : String(it);
-       };
-
-       // 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';
-       })();
-
-       // 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', '$0') === '';
-         }
-         return false;
-       })();
-
-       var REPLACE_SUPPORTS_NAMED_GROUPS = !fails(function () {
-         var re = /./;
-         re.exec = function () {
-           var result = [];
-           result.groups = { a: '7' };
-           return result;
-         };
-         return ''.replace(re, '$<a>') !== '7';
-       });
-
-       // @@replace logic
-       fixRegexpWellKnownSymbolLogic('replace', function (_, nativeReplace, maybeCallNative) {
-         var UNSAFE_SUBSTITUTE = REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE ? '$' : '$0';
-
-         return [
-           // `String.prototype.replace` method
-           // https://tc39.es/ecma262/#sec-string.prototype.replace
-           function replace(searchValue, replaceValue) {
-             var O = requireObjectCoercible(this);
-             var replacer = searchValue == undefined ? undefined : searchValue[REPLACE];
-             return replacer !== undefined
-               ? replacer.call(searchValue, O, replaceValue)
-               : nativeReplace.call(String(O), searchValue, replaceValue);
-           },
-           // `RegExp.prototype[@@replace]` method
-           // https://tc39.es/ecma262/#sec-regexp.prototype-@@replace
-           function (string, replaceValue) {
-             if (
-               typeof replaceValue === 'string' &&
-               replaceValue.indexOf(UNSAFE_SUBSTITUTE) === -1 &&
-               replaceValue.indexOf('$<') === -1
-             ) {
-               var res = maybeCallNative(nativeReplace, this, string, replaceValue);
-               if (res.done) return res.value;
-             }
-
-             var rx = anObject(this);
-             var S = String(string);
-
-             var functionalReplace = typeof replaceValue === 'function';
-             if (!functionalReplace) replaceValue = String(replaceValue);
-
-             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);
-             }
-
-             var accumulatedResult = '';
-             var nextSourcePosition = 0;
-             for (var i = 0; i < results.length; i++) {
-               result = results[i];
-
-               var matched = String(result[0]);
-               var position = max$2(min$5(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);
-           }
-         ];
-       }, !REPLACE_SUPPORTS_NAMED_GROUPS || !REPLACE_KEEPS_$0 || REGEXP_REPLACE_SUBSTITUTES_UNDEFINED_CAPTURE);
-
-       var MATCH$2 = wellKnownSymbol('match');
+       var MATCH$2 = wellKnownSymbol$3('match');
 
        // `IsRegExp` abstract operation
        // https://tc39.es/ecma262/#sec-isregexp
        var isRegexp = function (it) {
          var isRegExp;
-         return isObject$4(it) && ((isRegExp = it[MATCH$2]) !== undefined ? !!isRegExp : classofRaw(it) == 'RegExp');
+         return isObject$c(it) && ((isRegExp = it[MATCH$2]) !== undefined ? !!isRegExp : classof$1(it) == 'RegExp');
        };
 
-       var UNSUPPORTED_Y$1 = regexpStickyHelpers.UNSUPPORTED_Y;
-       var arrayPush = [].push;
-       var min$4 = Math.min;
+       var apply$2 = functionApply;
+       var call$6 = functionCall;
+       var uncurryThis$p = functionUncurryThis;
+       var fixRegExpWellKnownSymbolLogic$2 = fixRegexpWellKnownSymbolLogic;
+       var isRegExp$2 = isRegexp;
+       var anObject$5 = anObject$n;
+       var requireObjectCoercible$9 = requireObjectCoercible$e;
+       var speciesConstructor$1 = speciesConstructor$5;
+       var advanceStringIndex$1 = advanceStringIndex$3;
+       var toLength$4 = toLength$c;
+       var toString$e = toString$k;
+       var getMethod$2 = getMethod$7;
+       var arraySlice$4 = arraySliceSimple;
+       var callRegExpExec = regexpExecAbstract;
+       var regexpExec = regexpExec$3;
+       var stickyHelpers$1 = regexpStickyHelpers;
+       var fails$p = fails$V;
+
+       var UNSUPPORTED_Y$1 = stickyHelpers$1.UNSUPPORTED_Y;
        var MAX_UINT32 = 0xFFFFFFFF;
+       var min$4 = Math.min;
+       var $push = [].push;
+       var exec$4 = uncurryThis$p(/./.exec);
+       var push$5 = uncurryThis$p($push);
+       var stringSlice$5 = uncurryThis$p(''.slice);
 
        // 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 SPLIT_WORKS_WITH_OVERWRITTEN_EXEC = !fails$p(function () {
          // eslint-disable-next-line regexp/no-empty-group -- required for testing
          var re = /(?:)/;
          var originalExec = re.exec;
        });
 
        // @@split logic
-       fixRegexpWellKnownSymbolLogic('split', function (SPLIT, nativeSplit, maybeCallNative) {
+       fixRegExpWellKnownSymbolLogic$2('split', function (SPLIT, nativeSplit, maybeCallNative) {
          var internalSplit;
          if (
            'abbc'.split(/(b)*/)[1] == 'c' ||
            'test'.split(/(?:)/, -1).length != 4 ||
            'ab'.split(/(?:ab)*/).length != 2 ||
            '.'.split(/(.?)(.?)/).length != 4 ||
-           // eslint-disable-next-line regexp/no-assertion-capturing-group, regexp/no-empty-group -- required for testing
+           // eslint-disable-next-line regexp/no-empty-capturing-group, regexp/no-empty-group -- required for testing
            '.'.split(/()()/).length > 1 ||
            ''.split(/.?/).length
          ) {
            // based on es5-shim implementation, need to rework it
            internalSplit = function (separator, limit) {
-             var string = String(requireObjectCoercible(this));
+             var string = toString$e(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(separator)) {
-               return nativeSplit.call(string, separator, lim);
+             if (!isRegExp$2(separator)) {
+               return call$6(nativeSplit, string, separator, lim);
              }
              var output = [];
              var flags = (separator.ignoreCase ? 'i' : '') +
              // 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)) {
+             while (match = call$6(regexpExec, 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));
+                 push$5(output, stringSlice$5(string, lastLastIndex, match.index));
+                 if (match.length > 1 && match.index < string.length) apply$2($push, output, arraySlice$4(match, 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;
+               if (lastLength || !exec$4(separatorCopy, '')) push$5(output, '');
+             } else push$5(output, stringSlice$5(string, lastLastIndex));
+             return output.length > lim ? arraySlice$4(output, 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);
+             return separator === undefined && limit === 0 ? [] : call$6(nativeSplit, this, separator, limit);
            };
          } else internalSplit = nativeSplit;
 
            // `String.prototype.split` method
            // https://tc39.es/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);
+             var O = requireObjectCoercible$9(this);
+             var splitter = separator == undefined ? undefined : getMethod$2(separator, SPLIT);
+             return splitter
+               ? call$6(splitter, separator, O, limit)
+               : call$6(internalSplit, toString$e(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);
+             var rx = anObject$5(this);
+             var S = toString$e(string);
+             var res = maybeCallNative(internalSplit, rx, S, limit, internalSplit !== nativeSplit);
+
              if (res.done) return res.value;
 
-             var rx = anObject(this);
-             var S = String(string);
-             var C = speciesConstructor(rx, RegExp);
+             var C = speciesConstructor$1(rx, RegExp);
 
              var unicodeMatching = rx.unicode;
              var flags = (rx.ignoreCase ? 'i' : '') +
              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 regexpExecAbstract(splitter, S) === null ? [S] : [];
+             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 = regexpExecAbstract(splitter, UNSUPPORTED_Y$1 ? S.slice(q) : S);
+               var z = callRegExpExec(splitter, UNSUPPORTED_Y$1 ? stringSlice$5(S, q) : S);
                var e;
                if (
                  z === null ||
-                 (e = min$4(toLength(splitter.lastIndex + (UNSUPPORTED_Y$1 ? q : 0)), S.length)) === p
+                 (e = min$4(toLength$4(splitter.lastIndex + (UNSUPPORTED_Y$1 ? q : 0)), S.length)) === p
                ) {
-                 q = advanceStringIndex(S, q, unicodeMatching);
+                 q = advanceStringIndex$1(S, q, unicodeMatching);
                } else {
-                 A.push(S.slice(p, q));
+                 push$5(A, stringSlice$5(S, p, q));
                  if (A.length === lim) return A;
                  for (var i = 1; i <= z.length - 1; i++) {
-                   A.push(z[i]);
+                   push$5(A, z[i]);
                    if (A.length === lim) return A;
                  }
                  q = p = e;
                }
              }
-             A.push(S.slice(p));
+             push$5(A, stringSlice$5(S, p));
              return A;
            }
          ];
        }, !SPLIT_WORKS_WITH_OVERWRITTEN_EXEC, UNSUPPORTED_Y$1);
 
        // a string of all valid unicode whitespaces
-       var whitespaces = '\u0009\u000A\u000B\u000C\u000D\u0020\u00A0\u1680\u2000\u2001\u2002' +
+       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 whitespace = '[' + whitespaces + ']';
+       var uncurryThis$o = functionUncurryThis;
+       var requireObjectCoercible$8 = requireObjectCoercible$e;
+       var toString$d = toString$k;
+       var whitespaces$3 = whitespaces$4;
+
+       var replace$4 = uncurryThis$o(''.replace);
+       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($this));
-           if (TYPE & 1) string = string.replace(ltrim, '');
-           if (TYPE & 2) string = string.replace(rtrim$2, '');
+           var string = toString$d(requireObjectCoercible$8($this));
+           if (TYPE & 1) string = replace$4(string, ltrim, '');
+           if (TYPE & 2) string = replace$4(string, rtrim$2, '');
            return string;
          };
        };
          trim: createMethod$2(3)
        };
 
+       var PROPER_FUNCTION_NAME = functionName.PROPER;
+       var fails$o = fails$V;
+       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(function () {
-           return !!whitespaces[METHOD_NAME]() || non[METHOD_NAME]() != non || whitespaces[METHOD_NAME].name !== METHOD_NAME;
+         return fails$o(function () {
+           return !!whitespaces$2[METHOD_NAME]()
+             || non[METHOD_NAME]() !== non
+             || (PROPER_FUNCTION_NAME && whitespaces$2[METHOD_NAME].name !== METHOD_NAME);
          });
        };
 
+       var $$W = _export;
        var $trim = stringTrim.trim;
-
+       var forcedStringTrimMethod$2 = stringTrimForced;
 
        // `String.prototype.trim` method
        // https://tc39.es/ecma262/#sec-string.prototype.trim
-       _export({ target: 'String', proto: true, forced: stringTrimForced('trim') }, {
+       $$W({ target: 'String', proto: true, forced: forcedStringTrimMethod$2('trim') }, {
          trim: function trim() {
            return $trim(this);
          }
        });
 
-       var defineProperty$3 = objectDefineProperty.f;
+       var DESCRIPTORS$b = descriptors;
+       var FUNCTION_NAME_EXISTS = functionName.EXISTS;
+       var uncurryThis$n = functionUncurryThis;
+       var defineProperty$6 = objectDefineProperty.f;
 
        var FunctionPrototype = Function.prototype;
-       var FunctionPrototypeToString = FunctionPrototype.toString;
-       var nameRE = /^\s*function ([^ (]*)/;
+       var functionToString = uncurryThis$n(FunctionPrototype.toString);
+       var nameRE = /function\b(?:\s|\/\*[\S\s]*?\*\/|\/\/[^\n\r]*[\n\r]+)*([^\s(/]*)/;
+       var regExpExec$2 = uncurryThis$n(nameRE.exec);
        var NAME = 'name';
 
        // Function instances `.name` property
        // https://tc39.es/ecma262/#sec-function-instances-name
-       if (descriptors && !(NAME in FunctionPrototype)) {
-         defineProperty$3(FunctionPrototype, NAME, {
+       if (DESCRIPTORS$b && !FUNCTION_NAME_EXISTS) {
+         defineProperty$6(FunctionPrototype, NAME, {
            configurable: true,
            get: function () {
              try {
-               return FunctionPrototypeToString.call(this).match(nameRE)[1];
+               return regExpExec$2(nameRE, functionToString(this))[1];
              } catch (error) {
                return '';
              }
          });
        }
 
+       var $$V = _export;
+       var DESCRIPTORS$a = descriptors;
+       var create$5 = objectCreate;
+
        // `Object.create` method
        // https://tc39.es/ecma262/#sec-object.create
-       _export({ target: 'Object', stat: true, sham: !descriptors }, {
-         create: objectCreate
+       $$V({ target: 'Object', stat: true, sham: !DESCRIPTORS$a }, {
+         create: create$5
        });
 
-       var slice$3 = [].slice;
-       var MSIE = /MSIE .\./.test(engineUserAgent); // <- dirty ie9- check
+       var $$U = _export;
+       var global$l = global$1o;
+       var apply$1 = functionApply;
+       var isCallable$2 = isCallable$r;
+       var userAgent$1 = engineUserAgent;
+       var arraySlice$3 = arraySlice$b;
+       var validateArgumentsLength$1 = validateArgumentsLength$4;
+
+       var MSIE = /MSIE .\./.test(userAgent$1); // <- dirty ie9- check
+       var Function$2 = global$l.Function;
 
        var wrap$1 = function (scheduler) {
          return function (handler, timeout /* , ...arguments */) {
-           var boundArgs = arguments.length > 2;
-           var args = boundArgs ? slice$3.call(arguments, 2) : undefined;
+           var boundArgs = validateArgumentsLength$1(arguments.length, 1) > 2;
+           var fn = isCallable$2(handler) ? handler : Function$2(handler);
+           var args = boundArgs ? arraySlice$3(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);
+             apply$1(fn, this, args);
+           } : fn, 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 }, {
+       $$U({ 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$2.setTimeout),
+         setTimeout: wrap$1(global$l.setTimeout),
          // `setInterval` method
          // https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#dom-setinterval
-         setInterval: wrap$1(global$2.setInterval)
+         setInterval: wrap$1(global$l.setInterval)
        });
 
-       var global$1 = typeof globalThis !== 'undefined' && globalThis || typeof self !== 'undefined' && self || typeof global$1 !== 'undefined' && global$1;
+       var global$k = typeof globalThis !== 'undefined' && globalThis || typeof self !== 'undefined' && self || typeof global$k !== 'undefined' && global$k;
        var support = {
-         searchParams: 'URLSearchParams' in global$1,
-         iterable: 'Symbol' in global$1 && 'iterator' in Symbol,
-         blob: 'FileReader' in global$1 && 'Blob' in global$1 && function () {
+         searchParams: 'URLSearchParams' in global$k,
+         iterable: 'Symbol' in global$k && 'iterator' in Symbol,
+         blob: 'FileReader' in global$k && 'Blob' in global$k && function () {
            try {
              new Blob();
              return true;
              return false;
            }
          }(),
-         formData: 'FormData' in global$1,
-         arrayBuffer: 'ArrayBuffer' in global$1
+         formData: 'FormData' in global$k,
+         arrayBuffer: 'ArrayBuffer' in global$k
        };
 
        function isDataView(obj) {
          });
        };
 
-       var DOMException$1 = global$1.DOMException;
+       var DOMException$1 = global$k.DOMException;
 
        try {
          new DOMException$1();
 
            function fixUrl(url) {
              try {
-               return url === '' && global$1.location.href ? global$1.location.href : url;
+               return url === '' && global$k.location.href ? global$k.location.href : url;
              } catch (e) {
                return url;
              }
        }
        fetch$1.polyfill = true;
 
-       if (!global$1.fetch) {
-         global$1.fetch = fetch$1;
-         global$1.Headers = Headers;
-         global$1.Request = Request;
-         global$1.Response = Response;
+       if (!global$k.fetch) {
+         global$k.fetch = fetch$1;
+         global$k.Headers = Headers;
+         global$k.Request = Request;
+         global$k.Response = Response;
        }
 
+       var $$T = _export;
+       var DESCRIPTORS$9 = descriptors;
+       var defineProperty$5 = objectDefineProperty.f;
+
        // `Object.defineProperty` method
        // https://tc39.es/ecma262/#sec-object.defineproperty
-       _export({ target: 'Object', stat: true, forced: !descriptors, sham: !descriptors }, {
-         defineProperty: objectDefineProperty.f
+       // eslint-disable-next-line es/no-object-defineproperty -- safe
+       $$T({ target: 'Object', stat: true, forced: Object.defineProperty !== defineProperty$5, sham: !DESCRIPTORS$9 }, {
+         defineProperty: defineProperty$5
        });
 
+       var $$S = _export;
+       var setPrototypeOf = objectSetPrototypeOf;
+
        // `Object.setPrototypeOf` method
        // https://tc39.es/ecma262/#sec-object.setprototypeof
-       _export({ target: 'Object', stat: true }, {
-         setPrototypeOf: objectSetPrototypeOf
+       $$S({ target: 'Object', stat: true }, {
+         setPrototypeOf: setPrototypeOf
        });
 
-       var FAILS_ON_PRIMITIVES$3 = fails(function () { objectGetPrototypeOf(1); });
+       var $$R = _export;
+       var fails$n = fails$V;
+       var toObject$8 = toObject$i;
+       var nativeGetPrototypeOf = objectGetPrototypeOf;
+       var CORRECT_PROTOTYPE_GETTER = correctPrototypeGetter;
+
+       var FAILS_ON_PRIMITIVES$4 = fails$n(function () { nativeGetPrototypeOf(1); });
 
        // `Object.getPrototypeOf` method
        // https://tc39.es/ecma262/#sec-object.getprototypeof
-       _export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$3, sham: !correctPrototypeGetter }, {
+       $$R({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$4, sham: !CORRECT_PROTOTYPE_GETTER }, {
          getPrototypeOf: function getPrototypeOf(it) {
-           return objectGetPrototypeOf(toObject(it));
+           return nativeGetPrototypeOf(toObject$8(it));
          }
        });
 
-       var slice$2 = [].slice;
+       var global$j = global$1o;
+       var uncurryThis$m = functionUncurryThis;
+       var aCallable$2 = aCallable$a;
+       var isObject$b = isObject$s;
+       var hasOwn$5 = hasOwnProperty_1;
+       var arraySlice$2 = arraySlice$b;
+       var NATIVE_BIND = functionBindNative;
+
+       var Function$1 = global$j.Function;
+       var concat$1 = uncurryThis$m([].concat);
+       var join$3 = uncurryThis$m([].join);
        var factories = {};
 
        var construct = function (C, argsLength, args) {
-         if (!(argsLength in factories)) {
+         if (!hasOwn$5(factories, argsLength)) {
            for (var list = [], i = 0; i < argsLength; i++) list[i] = 'a[' + i + ']';
-           // eslint-disable-next-line no-new-func -- we have no proper alternatives, IE8- only
-           factories[argsLength] = Function('C,a', 'return new C(' + list.join(',') + ')');
+           factories[argsLength] = Function$1('C,a', 'return new C(' + join$3(list, ',') + ')');
          } return factories[argsLength](C, args);
        };
 
        // `Function.prototype.bind` method implementation
        // https://tc39.es/ecma262/#sec-function.prototype.bind
-       var functionBind = Function.bind || function bind(that /* , ...args */) {
-         var fn = aFunction(this);
-         var partArgs = slice$2.call(arguments, 1);
+       var functionBind = NATIVE_BIND ? Function$1.bind : function bind(that /* , ...args */) {
+         var F = aCallable$2(this);
+         var Prototype = F.prototype;
+         var partArgs = arraySlice$2(arguments, 1);
          var boundFunction = function bound(/* args... */) {
-           var args = partArgs.concat(slice$2.call(arguments));
-           return this instanceof boundFunction ? construct(fn, args.length, args) : fn.apply(that, args);
+           var args = concat$1(partArgs, arraySlice$2(arguments));
+           return this instanceof boundFunction ? construct(F, args.length, args) : F.apply(that, args);
          };
-         if (isObject$4(fn.prototype)) boundFunction.prototype = fn.prototype;
+         if (isObject$b(Prototype)) boundFunction.prototype = Prototype;
          return boundFunction;
        };
 
-       var nativeConstruct = getBuiltIn('Reflect', 'construct');
+       var $$Q = _export;
+       var getBuiltIn$1 = getBuiltIn$b;
+       var apply = functionApply;
+       var bind$7 = functionBind;
+       var aConstructor = aConstructor$3;
+       var anObject$4 = anObject$n;
+       var isObject$a = isObject$s;
+       var create$4 = objectCreate;
+       var fails$m = fails$V;
+
+       var nativeConstruct = getBuiltIn$1('Reflect', 'construct');
+       var ObjectPrototype = Object.prototype;
+       var push$4 = [].push;
 
        // `Reflect.construct` method
        // 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
-       var NEW_TARGET_BUG = fails(function () {
+       var NEW_TARGET_BUG = fails$m(function () {
          function F() { /* empty */ }
          return !(nativeConstruct(function () { /* empty */ }, [], F) instanceof F);
        });
-       var ARGS_BUG = !fails(function () {
+
+       var ARGS_BUG = !fails$m(function () {
          nativeConstruct(function () { /* empty */ });
        });
-       var FORCED$a = NEW_TARGET_BUG || ARGS_BUG;
 
-       _export({ target: 'Reflect', stat: true, forced: FORCED$a, sham: FORCED$a }, {
+       var FORCED$c = NEW_TARGET_BUG || ARGS_BUG;
+
+       $$Q({ target: 'Reflect', stat: true, forced: FORCED$c, sham: FORCED$c }, {
          construct: function construct(Target, args /* , newTarget */) {
-           aFunction(Target);
-           anObject(args);
-           var newTarget = arguments.length < 3 ? Target : aFunction(arguments[2]);
+           aConstructor(Target);
+           anObject$4(args);
+           var newTarget = arguments.length < 3 ? Target : aConstructor(arguments[2]);
            if (ARGS_BUG && !NEW_TARGET_BUG) return nativeConstruct(Target, args, newTarget);
            if (Target == newTarget) {
              // w/o altered newTarget, optimization for 0-4 arguments
              }
              // w/o altered newTarget, lot of arguments case
              var $args = [null];
-             $args.push.apply($args, args);
-             return new (functionBind.apply(Target, $args))();
+             apply(push$4, $args, args);
+             return new (apply(bind$7, Target, $args))();
            }
            // with altered newTarget, not support built-in constructors
            var proto = newTarget.prototype;
-           var instance = objectCreate(isObject$4(proto) ? proto : Object.prototype);
-           var result = Function.apply.call(Target, instance, args);
-           return isObject$4(result) ? result : instance;
+           var instance = create$4(isObject$a(proto) ? proto : ObjectPrototype);
+           var result = apply(Target, instance, args);
+           return isObject$a(result) ? result : instance;
          }
        });
 
+       var hasOwn$4 = hasOwnProperty_1;
+
+       var isDataDescriptor$1 = function (descriptor) {
+         return descriptor !== undefined && (hasOwn$4(descriptor, 'value') || hasOwn$4(descriptor, 'writable'));
+       };
+
+       var $$P = _export;
+       var call$5 = functionCall;
+       var isObject$9 = isObject$s;
+       var anObject$3 = anObject$n;
+       var isDataDescriptor = isDataDescriptor$1;
+       var getOwnPropertyDescriptorModule = objectGetOwnPropertyDescriptor;
+       var getPrototypeOf = objectGetPrototypeOf;
+
        // `Reflect.get` method
        // https://tc39.es/ecma262/#sec-reflect.get
        function get$3(target, propertyKey /* , receiver */) {
          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$1(descriptor, 'value')
+         if (anObject$3(target) === receiver) return target[propertyKey];
+         descriptor = getOwnPropertyDescriptorModule.f(target, propertyKey);
+         if (descriptor) return isDataDescriptor(descriptor)
            ? descriptor.value
-           : descriptor.get === undefined
-             ? undefined
-             : descriptor.get.call(receiver);
-         if (isObject$4(prototype = objectGetPrototypeOf(target))) return get$3(prototype, propertyKey, receiver);
+           : descriptor.get === undefined ? undefined : call$5(descriptor.get, receiver);
+         if (isObject$9(prototype = getPrototypeOf(target))) return get$3(prototype, propertyKey, receiver);
        }
 
-       _export({ target: 'Reflect', stat: true }, {
+       $$P({ target: 'Reflect', stat: true }, {
          get: get$3
        });
 
+       var $$O = _export;
+       var fails$l = fails$V;
+       var toIndexedObject$1 = toIndexedObject$d;
        var nativeGetOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
+       var DESCRIPTORS$8 = descriptors;
 
-
-       var FAILS_ON_PRIMITIVES$2 = fails(function () { nativeGetOwnPropertyDescriptor(1); });
-       var FORCED$9 = !descriptors || FAILS_ON_PRIMITIVES$2;
+       var FAILS_ON_PRIMITIVES$3 = fails$l(function () { nativeGetOwnPropertyDescriptor(1); });
+       var FORCED$b = !DESCRIPTORS$8 || FAILS_ON_PRIMITIVES$3;
 
        // `Object.getOwnPropertyDescriptor` method
        // https://tc39.es/ecma262/#sec-object.getownpropertydescriptor
-       _export({ target: 'Object', stat: true, forced: FORCED$9, sham: !descriptors }, {
+       $$O({ target: 'Object', stat: true, forced: FORCED$b, sham: !DESCRIPTORS$8 }, {
          getOwnPropertyDescriptor: function getOwnPropertyDescriptor(it, key) {
-           return nativeGetOwnPropertyDescriptor(toIndexedObject(it), key);
+           return nativeGetOwnPropertyDescriptor(toIndexedObject$1(it), key);
          }
        });
 
-       var HAS_SPECIES_SUPPORT$1 = arrayMethodHasSpeciesSupport('splice');
+       var $$N = _export;
+       var global$i = global$1o;
+       var toAbsoluteIndex$1 = toAbsoluteIndex$9;
+       var toIntegerOrInfinity$2 = toIntegerOrInfinity$b;
+       var lengthOfArrayLike$5 = lengthOfArrayLike$i;
+       var toObject$7 = toObject$i;
+       var arraySpeciesCreate$2 = arraySpeciesCreate$4;
+       var createProperty$2 = createProperty$5;
+       var arrayMethodHasSpeciesSupport$2 = arrayMethodHasSpeciesSupport$5;
 
+       var HAS_SPECIES_SUPPORT$1 = arrayMethodHasSpeciesSupport$2('splice');
+
+       var TypeError$6 = global$i.TypeError;
        var max$1 = Math.max;
        var min$3 = Math.min;
        var MAX_SAFE_INTEGER$1 = 0x1FFFFFFFFFFFFF;
        // `Array.prototype.splice` method
        // https://tc39.es/ecma262/#sec-array.prototype.splice
        // with adding support of @@species
-       _export({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$1 }, {
+       $$N({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT$1 }, {
          splice: function splice(start, deleteCount /* , ...items */) {
-           var O = toObject(this);
-           var len = toLength(O.length);
-           var actualStart = toAbsoluteIndex(start, len);
+           var O = toObject$7(this);
+           var len = lengthOfArrayLike$5(O);
+           var actualStart = toAbsoluteIndex$1(start, len);
            var argumentsLength = arguments.length;
            var insertCount, actualDeleteCount, A, k, from, to;
            if (argumentsLength === 0) {
              actualDeleteCount = len - actualStart;
            } else {
              insertCount = argumentsLength - 2;
-             actualDeleteCount = min$3(max$1(toInteger(deleteCount), 0), len - actualStart);
+             actualDeleteCount = min$3(max$1(toIntegerOrInfinity$2(deleteCount), 0), len - actualStart);
            }
            if (len + insertCount - actualDeleteCount > MAX_SAFE_INTEGER$1) {
-             throw TypeError(MAXIMUM_ALLOWED_LENGTH_EXCEEDED);
+             throw TypeError$6(MAXIMUM_ALLOWED_LENGTH_EXCEEDED);
            }
-           A = arraySpeciesCreate(O, actualDeleteCount);
+           A = arraySpeciesCreate$2(O, actualDeleteCount);
            for (k = 0; k < actualDeleteCount; k++) {
              from = actualStart + k;
-             if (from in O) createProperty(A, k, O[from]);
+             if (from in O) createProperty$2(A, k, O[from]);
            }
            A.length = actualDeleteCount;
            if (insertCount < actualDeleteCount) {
          }
        });
 
+       var defineWellKnownSymbol$1 = defineWellKnownSymbol$4;
+
        // `Symbol.toStringTag` well-known symbol
        // https://tc39.es/ecma262/#sec-symbol.tostringtag
-       defineWellKnownSymbol('toStringTag');
+       defineWellKnownSymbol$1('toStringTag');
+
+       var global$h = global$1o;
+       var setToStringTag$3 = setToStringTag$a;
 
        // JSON[@@toStringTag] property
        // https://tc39.es/ecma262/#sec-json-@@tostringtag
-       setToStringTag(global$2.JSON, 'JSON', true);
+       setToStringTag$3(global$h.JSON, 'JSON', true);
+
+       var setToStringTag$2 = setToStringTag$a;
 
        // Math[@@toStringTag] property
        // https://tc39.es/ecma262/#sec-math-@@tostringtag
-       setToStringTag(Math, 'Math', true);
+       setToStringTag$2(Math, 'Math', true);
 
        (function (factory) {
          factory();
          };
        }
 
-       var IS_CONCAT_SPREADABLE = wellKnownSymbol('isConcatSpreadable');
+       var $$M = _export;
+       var global$g = global$1o;
+       var fails$k = fails$V;
+       var isArray$3 = isArray$8;
+       var isObject$8 = isObject$s;
+       var toObject$6 = toObject$i;
+       var lengthOfArrayLike$4 = lengthOfArrayLike$i;
+       var createProperty$1 = createProperty$5;
+       var arraySpeciesCreate$1 = arraySpeciesCreate$4;
+       var arrayMethodHasSpeciesSupport$1 = arrayMethodHasSpeciesSupport$5;
+       var wellKnownSymbol$2 = wellKnownSymbol$t;
+       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';
+       var TypeError$5 = global$g.TypeError;
 
        // 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$k(function () {
          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) {
-         if (!isObject$4(O)) return false;
+         if (!isObject$8(O)) return false;
          var spreadable = O[IS_CONCAT_SPREADABLE];
-         return spreadable !== undefined ? !!spreadable : isArray(O);
+         return spreadable !== undefined ? !!spreadable : isArray$3(O);
        };
 
-       var FORCED$8 = !IS_CONCAT_SPREADABLE_SUPPORT || !SPECIES_SUPPORT;
+       var FORCED$a = !IS_CONCAT_SPREADABLE_SUPPORT || !SPECIES_SUPPORT;
 
        // `Array.prototype.concat` method
        // https://tc39.es/ecma262/#sec-array.prototype.concat
        // with adding support of @@isConcatSpreadable and @@species
-       _export({ target: 'Array', proto: true, forced: FORCED$8 }, {
+       $$M({ target: 'Array', proto: true, forced: FORCED$a }, {
          // eslint-disable-next-line no-unused-vars -- required for `.length`
          concat: function concat(arg) {
-           var O = toObject(this);
-           var A = arraySpeciesCreate(O, 0);
+           var O = toObject$6(this);
+           var A = arraySpeciesCreate$1(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) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
-               for (k = 0; k < len; k++, n++) if (k in E) createProperty(A, n, E[k]);
+               len = lengthOfArrayLike$4(E);
+               if (n + len > MAX_SAFE_INTEGER) throw TypeError$5(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
+               for (k = 0; k < len; k++, n++) if (k in E) createProperty$1(A, n, E[k]);
              } else {
-               if (n >= MAX_SAFE_INTEGER) throw TypeError(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
-               createProperty(A, n++, E);
+               if (n >= MAX_SAFE_INTEGER) throw TypeError$5(MAXIMUM_ALLOWED_INDEX_EXCEEDED);
+               createProperty$1(A, n++, E);
              }
            }
            A.length = n;
          }
        });
 
+       var DESCRIPTORS$7 = descriptors;
+       var uncurryThis$l = functionUncurryThis;
+       var call$4 = functionCall;
+       var fails$j = fails$V;
+       var objectKeys$1 = objectKeys$4;
+       var getOwnPropertySymbolsModule = objectGetOwnPropertySymbols;
+       var propertyIsEnumerableModule = objectPropertyIsEnumerable;
+       var toObject$5 = toObject$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$4 = Object.defineProperty;
+       var concat = uncurryThis$l([].concat);
+
+       // `Object.assign` method
+       // https://tc39.es/ecma262/#sec-object.assign
+       var objectAssign = !$assign || fails$j(function () {
+         // should have correct order of operations (Edge bug)
+         if (DESCRIPTORS$7 && $assign({ b: 1 }, $assign(defineProperty$4({}, 'a', {
+           enumerable: true,
+           get: function () {
+             defineProperty$4(this, 'b', {
+               value: 3,
+               enumerable: false
+             });
+           }
+         }), { b: 2 })).b !== 1) return true;
+         // should work with symbols and should have deterministic property order (V8 bug)
+         var A = {};
+         var B = {};
+         // 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; });
+         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$5(target);
+         var argumentsLength = arguments.length;
+         var index = 1;
+         var getOwnPropertySymbols = getOwnPropertySymbolsModule.f;
+         var propertyIsEnumerable = propertyIsEnumerableModule.f;
+         while (argumentsLength > index) {
+           var S = IndexedObject(arguments[index++]);
+           var keys = getOwnPropertySymbols ? concat(objectKeys$1(S), getOwnPropertySymbols(S)) : objectKeys$1(S);
+           var length = keys.length;
+           var j = 0;
+           var key;
+           while (length > j) {
+             key = keys[j++];
+             if (!DESCRIPTORS$7 || call$4(propertyIsEnumerable, S, key)) T[key] = S[key];
+           }
+         } return T;
+       } : $assign;
+
+       var $$L = _export;
+       var assign$2 = objectAssign;
+
        // `Object.assign` method
        // https://tc39.es/ecma262/#sec-object.assign
        // eslint-disable-next-line es/no-object-assign -- required for testing
-       _export({ target: 'Object', stat: true, forced: Object.assign !== objectAssign }, {
-         assign: objectAssign
+       $$L({ target: 'Object', stat: true, forced: Object.assign !== assign$2 }, {
+         assign: assign$2
        });
 
+       var $$K = _export;
        var $filter = arrayIteration.filter;
-
+       var arrayMethodHasSpeciesSupport = arrayMethodHasSpeciesSupport$5;
 
        var HAS_SPECIES_SUPPORT = arrayMethodHasSpeciesSupport('filter');
 
        // `Array.prototype.filter` method
        // https://tc39.es/ecma262/#sec-array.prototype.filter
        // with adding support of @@species
-       _export({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT }, {
+       $$K({ target: 'Array', proto: true, forced: !HAS_SPECIES_SUPPORT }, {
          filter: function filter(callbackfn /* , thisArg */) {
            return $filter(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
          }
        });
 
-       var FAILS_ON_PRIMITIVES$1 = fails(function () { objectKeys(1); });
+       var $$J = _export;
+       var toObject$4 = toObject$i;
+       var nativeKeys = objectKeys$4;
+       var fails$i = fails$V;
+
+       var FAILS_ON_PRIMITIVES$2 = fails$i(function () { nativeKeys(1); });
 
        // `Object.keys` method
        // https://tc39.es/ecma262/#sec-object.keys
-       _export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$1 }, {
+       $$J({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES$2 }, {
          keys: function keys(it) {
-           return objectKeys(toObject(it));
+           return nativeKeys(toObject$4(it));
          }
        });
 
-       var nativeReverse = [].reverse;
+       var $$I = _export;
+       var uncurryThis$k = functionUncurryThis;
+       var isArray$2 = isArray$8;
+
+       var un$Reverse = uncurryThis$k([].reverse);
        var test$1 = [1, 2];
 
        // `Array.prototype.reverse` method
        // https://tc39.es/ecma262/#sec-array.prototype.reverse
        // 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()) }, {
+       $$I({ target: 'Array', proto: true, forced: String(test$1) === String(test$1.reverse()) }, {
          reverse: function reverse() {
            // eslint-disable-next-line no-self-assign -- dirty hack
-           if (isArray(this)) this.length = this.length;
-           return nativeReverse.call(this);
+           if (isArray$2(this)) this.length = this.length;
+           return un$Reverse(this);
          }
        });
 
+       var global$f = global$1o;
+       var fails$h = fails$V;
+       var uncurryThis$j = functionUncurryThis;
+       var toString$c = toString$k;
        var trim$4 = stringTrim.trim;
+       var whitespaces$1 = whitespaces$4;
 
-
-       var $parseFloat = global$2.parseFloat;
-       var FORCED$7 = 1 / $parseFloat(whitespaces + '-0') !== -Infinity;
+       var charAt$2 = uncurryThis$j(''.charAt);
+       var n$ParseFloat = global$f.parseFloat;
+       var Symbol$2 = global$f.Symbol;
+       var ITERATOR$1 = Symbol$2 && Symbol$2.iterator;
+       var FORCED$9 = 1 / n$ParseFloat(whitespaces$1 + '-0') !== -Infinity
+         // MS Edge 18- broken with boxed symbols
+         || (ITERATOR$1 && !fails$h(function () { n$ParseFloat(Object(ITERATOR$1)); }));
 
        // `parseFloat` method
        // 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 numberParseFloat = FORCED$9 ? function parseFloat(string) {
+         var trimmedString = trim$4(toString$c(string));
+         var result = n$ParseFloat(trimmedString);
+         return result === 0 && charAt$2(trimmedString, 0) == '-' ? -0 : result;
+       } : n$ParseFloat;
+
+       var $$H = _export;
+       var $parseFloat = numberParseFloat;
 
        // `parseFloat` method
        // https://tc39.es/ecma262/#sec-parsefloat-string
-       _export({ global: true, forced: parseFloat != numberParseFloat }, {
-         parseFloat: numberParseFloat
+       $$H({ global: true, forced: parseFloat != $parseFloat }, {
+         parseFloat: $parseFloat
        });
 
        /*
            'sled': true,
            'yes': true
          },
+         'seamark:type': {
+           'separation_lane': true,
+           'separation_roundabout': true
+         },
          'waterway': {
            'canal': true,
            'ditch': true,
          tidal_channel: true
        };
 
+       var global$e = global$1o;
+       var fails$g = fails$V;
+       var uncurryThis$i = functionUncurryThis;
+       var toString$b = toString$k;
        var trim$3 = stringTrim.trim;
+       var whitespaces = whitespaces$4;
 
-
-       var $parseInt = global$2.parseInt;
-       var hex$2 = /^[+-]?0[Xx]/;
-       var FORCED$6 = $parseInt(whitespaces + '08') !== 8 || $parseInt(whitespaces + '0x16') !== 22;
+       var $parseInt$1 = global$e.parseInt;
+       var Symbol$1 = global$e.Symbol;
+       var ITERATOR = Symbol$1 && Symbol$1.iterator;
+       var hex$2 = /^[+-]?0x/i;
+       var exec$3 = uncurryThis$i(hex$2.exec);
+       var FORCED$8 = $parseInt$1(whitespaces + '08') !== 8 || $parseInt$1(whitespaces + '0x16') !== 22
+         // MS Edge 18- broken with boxed symbols
+         || (ITERATOR && !fails$g(function () { $parseInt$1(Object(ITERATOR)); }));
 
        // `parseInt` method
        // 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;
+       var numberParseInt = FORCED$8 ? function parseInt(string, radix) {
+         var S = trim$3(toString$b(string));
+         return $parseInt$1(S, (radix >>> 0) || (exec$3(hex$2, S) ? 16 : 10));
+       } : $parseInt$1;
+
+       var $$G = _export;
+       var $parseInt = numberParseInt;
 
        // `parseInt` method
        // https://tc39.es/ecma262/#sec-parseint-string-radix
-       _export({ global: true, forced: parseInt != numberParseInt }, {
-         parseInt: numberParseInt
+       $$G({ global: true, forced: parseInt != $parseInt }, {
+         parseInt: $parseInt
        });
 
-       var freezing = !fails(function () {
-         // eslint-disable-next-line es/no-object-isextensible, es/no-object-preventextensions -- required for testing
-         return Object.isExtensible(Object.preventExtensions({}));
+       var internalMetadata = {exports: {}};
+
+       // FF26- bug: ArrayBuffers are non-extensible, but Object.isExtensible does not report it
+       var fails$f = fails$V;
+
+       var arrayBufferNonExtensible = fails$f(function () {
+         if (typeof ArrayBuffer == 'function') {
+           var buffer = new ArrayBuffer(8);
+           // eslint-disable-next-line es/no-object-isextensible, es/no-object-defineproperty -- safe
+           if (Object.isExtensible(buffer)) Object.defineProperty(buffer, 'a', { value: 8 });
+         }
        });
 
-       var internalMetadata = createCommonjsModule(function (module) {
-       var defineProperty = objectDefineProperty.f;
+       var fails$e = fails$V;
+       var isObject$7 = isObject$s;
+       var classof = classofRaw$1;
+       var ARRAY_BUFFER_NON_EXTENSIBLE = arrayBufferNonExtensible;
 
+       // eslint-disable-next-line es/no-object-isextensible -- safe
+       var $isExtensible = Object.isExtensible;
+       var FAILS_ON_PRIMITIVES$1 = fails$e(function () { $isExtensible(1); });
 
+       // `Object.isExtensible` method
+       // https://tc39.es/ecma262/#sec-object.isextensible
+       var objectIsExtensible = (FAILS_ON_PRIMITIVES$1 || ARRAY_BUFFER_NON_EXTENSIBLE) ? function isExtensible(it) {
+         if (!isObject$7(it)) return false;
+         if (ARRAY_BUFFER_NON_EXTENSIBLE && classof(it) == 'ArrayBuffer') return false;
+         return $isExtensible ? $isExtensible(it) : true;
+       } : $isExtensible;
 
-       var METADATA = uid('meta');
-       var id = 0;
+       var fails$d = fails$V;
 
-       // eslint-disable-next-line es/no-object-isextensible -- safe
-       var isExtensible = Object.isExtensible || function () {
-         return true;
-       };
+       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 $$F = _export;
+       var uncurryThis$h = functionUncurryThis;
+       var hiddenKeys = hiddenKeys$6;
+       var isObject$6 = isObject$s;
+       var hasOwn$3 = hasOwnProperty_1;
+       var defineProperty$3 = objectDefineProperty.f;
+       var getOwnPropertyNamesModule = objectGetOwnPropertyNames;
+       var getOwnPropertyNamesExternalModule = objectGetOwnPropertyNamesExternal;
+       var isExtensible = objectIsExtensible;
+       var uid = uid$5;
+       var FREEZING$1 = freezing;
+
+       var REQUIRED = false;
+       var METADATA = uid('meta');
+       var id$1 = 0;
 
        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
          } });
        };
 
-       var fastKey = function (it, create) {
+       var fastKey$1 = function (it, create) {
          // return a primitive with prefix
-         if (!isObject$4(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
-         if (!has$1(it, METADATA)) {
+         if (!isObject$6(it)) return typeof it == 'symbol' ? it : (typeof it == 'string' ? 'S' : 'P') + it;
+         if (!hasOwn$3(it, METADATA)) {
            // can't set metadata to uncaught frozen object
            if (!isExtensible(it)) return 'F';
            // not necessary to add metadata
        };
 
        var getWeakData = function (it, create) {
-         if (!has$1(it, METADATA)) {
+         if (!hasOwn$3(it, METADATA)) {
            // can't set metadata to uncaught frozen object
            if (!isExtensible(it)) return true;
            // not necessary to add metadata
        };
 
        // add metadata on freeze-family methods calling
-       var onFreeze = function (it) {
-         if (freezing && meta.REQUIRED && isExtensible(it) && !has$1(it, METADATA)) setMetadata(it);
+       var onFreeze$1 = function (it) {
+         if (FREEZING$1 && REQUIRED && isExtensible(it) && !hasOwn$3(it, METADATA)) setMetadata(it);
          return it;
        };
 
-       var meta = module.exports = {
-         REQUIRED: false,
-         fastKey: fastKey,
-         getWeakData: getWeakData,
-         onFreeze: onFreeze
+       var enable = function () {
+         meta.enable = function () { /* empty */ };
+         REQUIRED = true;
+         var getOwnPropertyNames = getOwnPropertyNamesModule.f;
+         var splice = uncurryThis$h([].splice);
+         var test = {};
+         test[METADATA] = 1;
+
+         // prevent exposing of metadata key
+         if (getOwnPropertyNames(test).length) {
+           getOwnPropertyNamesModule.f = function (it) {
+             var result = getOwnPropertyNames(it);
+             for (var i = 0, length = result.length; i < length; i++) {
+               if (result[i] === METADATA) {
+                 splice(result, i, 1);
+                 break;
+               }
+             } return result;
+           };
+
+           $$F({ target: 'Object', stat: true, forced: true }, {
+             getOwnPropertyNames: getOwnPropertyNamesExternalModule.f
+           });
+         }
        };
 
-       hiddenKeys$1[METADATA] = true;
-       });
+       var meta = internalMetadata.exports = {
+         enable: enable,
+         fastKey: fastKey$1,
+         getWeakData: getWeakData,
+         onFreeze: onFreeze$1
+       };
 
-       var collection = function (CONSTRUCTOR_NAME, wrapper, common) {
+       hiddenKeys[METADATA] = true;
+
+       var $$E = _export;
+       var global$d = global$1o;
+       var uncurryThis$g = functionUncurryThis;
+       var isForced$2 = isForced_1;
+       var redefine$4 = redefine$h.exports;
+       var InternalMetadataModule = internalMetadata.exports;
+       var iterate$1 = iterate$3;
+       var anInstance$2 = anInstance$7;
+       var isCallable$1 = isCallable$r;
+       var isObject$5 = isObject$s;
+       var fails$c = fails$V;
+       var checkCorrectnessOfIteration$1 = checkCorrectnessOfIteration$4;
+       var setToStringTag$1 = setToStringTag$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 NativeConstructor = global$2[CONSTRUCTOR_NAME];
+         var NativeConstructor = global$d[CONSTRUCTOR_NAME];
          var NativePrototype = NativeConstructor && NativeConstructor.prototype;
          var Constructor = NativeConstructor;
          var exported = {};
 
          var fixMethod = function (KEY) {
-           var nativeMethod = NativePrototype[KEY];
-           redefine(NativePrototype, KEY,
+           var uncurriedNativeMethod = uncurryThis$g(NativePrototype[KEY]);
+           redefine$4(NativePrototype, KEY,
              KEY == 'add' ? function add(value) {
-               nativeMethod.call(this, value === 0 ? 0 : value);
+               uncurriedNativeMethod(this, value === 0 ? 0 : value);
                return this;
              } : KEY == 'delete' ? function (key) {
-               return IS_WEAK && !isObject$4(key) ? false : nativeMethod.call(this, key === 0 ? 0 : key);
+               return IS_WEAK && !isObject$5(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);
              } : KEY == 'get' ? function get(key) {
-               return IS_WEAK && !isObject$4(key) ? undefined : nativeMethod.call(this, key === 0 ? 0 : key);
+               return IS_WEAK && !isObject$5(key) ? undefined : uncurriedNativeMethod(this, key === 0 ? 0 : key);
              } : KEY == 'has' ? function has(key) {
-               return IS_WEAK && !isObject$4(key) ? false : nativeMethod.call(this, key === 0 ? 0 : key);
+               return IS_WEAK && !isObject$5(key) ? false : uncurriedNativeMethod(this, key === 0 ? 0 : key);
              } : function set(key, value) {
-               nativeMethod.call(this, key === 0 ? 0 : key, value);
+               uncurriedNativeMethod(this, key === 0 ? 0 : key, value);
                return this;
              }
            );
          };
 
-         var REPLACE = isForced_1(
+         var REPLACE = isForced$2(
            CONSTRUCTOR_NAME,
-           typeof NativeConstructor != 'function' || !(IS_WEAK || NativePrototype.forEach && !fails(function () {
+           !isCallable$1(NativeConstructor) || !(IS_WEAK || NativePrototype.forEach && !fails$c(function () {
              new NativeConstructor().entries().next();
            }))
          );
          if (REPLACE) {
            // create collection constructor
            Constructor = common.getConstructor(wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER);
-           internalMetadata.REQUIRED = true;
-         } else if (isForced_1(CONSTRUCTOR_NAME, true)) {
+           InternalMetadataModule.enable();
+         } else if (isForced$2(CONSTRUCTOR_NAME, true)) {
            var instance = new Constructor();
            // early implementations not supports chaining
            var HASNT_CHAINING = instance[ADDER](IS_WEAK ? {} : -0, 1) != instance;
            // V8 ~ Chromium 40- weak-collections throws on primitives, but should return false
-           var THROWS_ON_PRIMITIVES = fails(function () { instance.has(1); });
+           var THROWS_ON_PRIMITIVES = fails$c(function () { instance.has(1); });
            // most early implementations doesn't supports iterables, most modern - not close it correctly
            // eslint-disable-next-line no-new -- required for testing
-           var ACCEPT_ITERABLES = checkCorrectnessOfIteration(function (iterable) { new NativeConstructor(iterable); });
+           var ACCEPT_ITERABLES = checkCorrectnessOfIteration$1(function (iterable) { new NativeConstructor(iterable); });
            // for early implementations -0 and +0 not the same
-           var BUGGY_ZERO = !IS_WEAK && fails(function () {
+           var BUGGY_ZERO = !IS_WEAK && fails$c(function () {
              // V8 ~ Chromium 42- fails only with 5+ elements
              var $instance = new NativeConstructor();
              var index = 5;
 
            if (!ACCEPT_ITERABLES) {
              Constructor = wrapper(function (dummy, iterable) {
-               anInstance(dummy, Constructor, CONSTRUCTOR_NAME);
-               var that = inheritIfRequired(new NativeConstructor(), dummy, Constructor);
-               if (iterable != undefined) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });
+               anInstance$2(dummy, NativePrototype);
+               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;
          }
 
          exported[CONSTRUCTOR_NAME] = Constructor;
-         _export({ global: true, forced: Constructor != NativeConstructor }, exported);
+         $$E({ global: true, forced: Constructor != NativeConstructor }, exported);
 
-         setToStringTag(Constructor, CONSTRUCTOR_NAME);
+         setToStringTag$1(Constructor, CONSTRUCTOR_NAME);
 
          if (!IS_WEAK) common.setStrong(Constructor, CONSTRUCTOR_NAME, IS_MAP);
 
        };
 
        var defineProperty$2 = objectDefineProperty.f;
-
-
-
-
-
-
-
-
-       var fastKey = internalMetadata.fastKey;
-
-
-       var setInternalState = internalState.set;
-       var internalStateGetterFor = internalState.getterFor;
-
-       var collectionStrong = {
+       var create$3 = objectCreate;
+       var redefineAll = redefineAll$4;
+       var bind$6 = functionBindContext;
+       var anInstance$1 = anInstance$7;
+       var iterate = iterate$3;
+       var defineIterator = defineIterator$3;
+       var setSpecies$1 = setSpecies$5;
+       var DESCRIPTORS$6 = descriptors;
+       var fastKey = internalMetadata.exports.fastKey;
+       var InternalStateModule$1 = internalState;
+
+       var setInternalState$1 = InternalStateModule$1.set;
+       var internalStateGetterFor = InternalStateModule$1.getterFor;
+
+       var collectionStrong$2 = {
          getConstructor: function (wrapper, CONSTRUCTOR_NAME, IS_MAP, ADDER) {
-           var C = wrapper(function (that, iterable) {
-             anInstance(that, C, CONSTRUCTOR_NAME);
-             setInternalState(that, {
+           var Constructor = wrapper(function (that, iterable) {
+             anInstance$1(that, Prototype);
+             setInternalState$1(that, {
                type: CONSTRUCTOR_NAME,
-               index: objectCreate(null),
+               index: create$3(null),
                first: undefined,
                last: undefined,
                size: 0
              });
-             if (!descriptors) that.size = 0;
+             if (!DESCRIPTORS$6) that.size = 0;
              if (iterable != undefined) iterate(iterable, that[ADDER], { that: that, AS_ENTRIES: IS_MAP });
            });
 
+           var Prototype = Constructor.prototype;
+
            var getInternalState = internalStateGetterFor(CONSTRUCTOR_NAME);
 
            var define = function (that, key, value) {
                };
                if (!state.first) state.first = entry;
                if (previous) previous.next = entry;
-               if (descriptors) state.size++;
+               if (DESCRIPTORS$6) state.size++;
                else that.size++;
                // add to index
                if (index !== 'F') state.index[index] = entry;
              }
            };
 
-           redefineAll(C.prototype, {
+           redefineAll(Prototype, {
              // `{ Map, Set }.prototype.clear()` methods
              // https://tc39.es/ecma262/#sec-map.prototype.clear
              // https://tc39.es/ecma262/#sec-set.prototype.clear
                  entry = entry.next;
                }
                state.first = state.last = undefined;
-               if (descriptors) state.size = 0;
+               if (DESCRIPTORS$6) state.size = 0;
                else that.size = 0;
              },
              // `{ Map, Set }.prototype.delete(key)` methods
                  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$6) state.size--;
                  else that.size--;
                } return !!entry;
              },
              // https://tc39.es/ecma262/#sec-set.prototype.foreach
              forEach: function forEach(callbackfn /* , that = undefined */) {
                var state = getInternalState(this);
-               var boundFunction = functionBindContext(callbackfn, arguments.length > 1 ? arguments[1] : undefined, 3);
+               var boundFunction = bind$6(callbackfn, arguments.length > 1 ? arguments[1] : undefined);
                var entry;
                while (entry = entry ? entry.next : state.first) {
                  boundFunction(entry.value, entry.key, this);
              }
            });
 
-           redefineAll(C.prototype, IS_MAP ? {
+           redefineAll(Prototype, IS_MAP ? {
              // `Map.prototype.get(key)` method
              // https://tc39.es/ecma262/#sec-map.prototype.get
              get: function get(key) {
                return define(this, value = value === 0 ? 0 : value, value);
              }
            });
-           if (descriptors) defineProperty$2(C.prototype, 'size', {
+           if (DESCRIPTORS$6) defineProperty$2(Prototype, 'size', {
              get: function () {
                return getInternalState(this).size;
              }
            });
-           return C;
+           return Constructor;
          },
-         setStrong: function (C, CONSTRUCTOR_NAME, IS_MAP) {
+         setStrong: function (Constructor, CONSTRUCTOR_NAME, IS_MAP) {
            var ITERATOR_NAME = CONSTRUCTOR_NAME + ' Iterator';
            var getInternalCollectionState = internalStateGetterFor(CONSTRUCTOR_NAME);
            var getInternalIteratorState = internalStateGetterFor(ITERATOR_NAME);
            // 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) {
-             setInternalState(this, {
+           defineIterator(Constructor, CONSTRUCTOR_NAME, function (iterated, kind) {
+             setInternalState$1(this, {
                type: ITERATOR_NAME,
                target: iterated,
                state: getInternalCollectionState(iterated),
            // `{ Map, Set }.prototype[@@species]` accessors
            // https://tc39.es/ecma262/#sec-get-map-@@species
            // https://tc39.es/ecma262/#sec-get-set-@@species
-           setSpecies(CONSTRUCTOR_NAME);
+           setSpecies$1(CONSTRUCTOR_NAME);
          }
        };
 
+       var collection$1 = collection$2;
+       var collectionStrong$1 = collectionStrong$2;
+
        // `Set` constructor
        // https://tc39.es/ecma262/#sec-set-objects
-       collection('Set', function (init) {
+       collection$1('Set', function (init) {
          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;
          };
        }
 
+       var defineWellKnownSymbol = defineWellKnownSymbol$4;
+
        // `Symbol.asyncIterator` well-known symbol
        // https://tc39.es/ecma262/#sec-symbol.asynciterator
        defineWellKnownSymbol('asyncIterator');
 
-       createCommonjsModule(function (module) {
+       var runtime = {exports: {}};
+
+       (function (module) {
          var runtime = function (exports) {
 
            var Op = Object.prototype;
 
 
            var IteratorPrototype = {};
-
-           IteratorPrototype[iteratorSymbol] = function () {
+           define(IteratorPrototype, iteratorSymbol, function () {
              return this;
-           };
-
+           });
            var getProto = Object.getPrototypeOf;
            var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
 
            }
 
            var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);
-           GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
-           GeneratorFunctionPrototype.constructor = GeneratorFunction;
+           GeneratorFunction.prototype = GeneratorFunctionPrototype;
+           define(Gp, "constructor", GeneratorFunctionPrototype);
+           define(GeneratorFunctionPrototype, "constructor", GeneratorFunction);
            GeneratorFunction.displayName = define(GeneratorFunctionPrototype, toStringTagSymbol, "GeneratorFunction"); // Helper for defining the .next, .throw, and .return methods of the
            // Iterator interface in terms of a single ._invoke method.
 
            }
 
            defineIteratorMethods(AsyncIterator.prototype);
-
-           AsyncIterator.prototype[asyncIteratorSymbol] = function () {
+           define(AsyncIterator.prototype, asyncIteratorSymbol, function () {
              return this;
-           };
-
+           });
            exports.AsyncIterator = AsyncIterator; // Note that simple async functions are implemented on top of
            // AsyncIterator objects; they just return a Promise for the value of
            // the final result produced by the iterator.
            // object to not be returned from this call. This ensures that doesn't happen.
            // See https://github.com/facebook/regenerator/issues/274 for more details.
 
-           Gp[iteratorSymbol] = function () {
+           define(Gp, iteratorSymbol, function () {
              return this;
-           };
-
-           Gp.toString = function () {
+           });
+           define(Gp, "toString", function () {
              return "[object Generator]";
-           };
+           });
 
            function pushTryEntry(locs) {
              var entry = {
          } catch (accidentalStrictMode) {
            // This module should not be running in strict mode, so the above
            // assignment should always work unless something is misconfigured. Just
-           // in case runtime.js accidentally runs in strict mode, we can escape
+           // in case runtime.js accidentally runs in strict mode, in modern engines
+           // we can explicitly access globalThis. In older engines we can escape
            // strict mode using a global Function call. This could conceivably fail
            // if a Content Security Policy forbids using Function, but in that case
            // the proper solution is to fix the accidental strict mode problem. If
            // you've misconfigured your bundler to force strict mode and applied a
            // CSP to forbid Function, and you're not willing to fix either of those
            // problems, please detail your unique predicament in a GitHub issue.
-           Function("r", "regeneratorRuntime = r")(runtime);
+           if ((typeof globalThis === "undefined" ? "undefined" : _typeof(globalThis)) === "object") {
+             globalThis.regeneratorRuntime = runtime;
+           } else {
+             Function("r", "regeneratorRuntime = r")(runtime);
+           }
          }
-       });
+       })(runtime);
 
        var _marked$3 = /*#__PURE__*/regeneratorRuntime.mark(numbers);
 
        var bisectRight = ascendingBisect.right;
        d3_bisector(number$1).center;
 
+       var anObject$2 = anObject$n;
+       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$2(value)[0], value[1]) : fn(value);
+         } catch (error) {
+           iteratorClose(iterator, 'throw', error);
+         }
+       };
+
+       var global$c = global$1o;
+       var bind$5 = functionBindContext;
+       var call$3 = functionCall;
+       var toObject$3 = toObject$i;
+       var callWithSafeIterationClosing = callWithSafeIterationClosing$1;
+       var isArrayIteratorMethod = isArrayIteratorMethod$3;
+       var isConstructor = isConstructor$4;
+       var lengthOfArrayLike$3 = lengthOfArrayLike$i;
+       var createProperty = createProperty$5;
+       var getIterator = getIterator$4;
+       var getIteratorMethod = getIteratorMethod$5;
+
+       var Array$1 = global$c.Array;
+
+       // `Array.from` method implementation
+       // https://tc39.es/ecma262/#sec-array.from
+       var arrayFrom$1 = function from(arrayLike /* , mapfn = undefined, thisArg = undefined */) {
+         var O = toObject$3(arrayLike);
+         var IS_CONSTRUCTOR = isConstructor(this);
+         var argumentsLength = arguments.length;
+         var mapfn = argumentsLength > 1 ? arguments[1] : undefined;
+         var mapping = mapfn !== undefined;
+         if (mapping) mapfn = bind$5(mapfn, argumentsLength > 2 ? arguments[2] : undefined);
+         var iteratorMethod = getIteratorMethod(O);
+         var index = 0;
+         var length, result, step, iterator, next, value;
+         // if the target is not iterable or it's an array with the default iterator - use a simple case
+         if (iteratorMethod && !(this == Array$1 && isArrayIteratorMethod(iteratorMethod))) {
+           iterator = getIterator(O, iteratorMethod);
+           next = iterator.next;
+           result = IS_CONSTRUCTOR ? new this() : [];
+           for (;!(step = call$3(next, iterator)).done; index++) {
+             value = mapping ? callWithSafeIterationClosing(iterator, mapfn, [step.value, index], true) : step.value;
+             createProperty(result, index, value);
+           }
+         } else {
+           length = lengthOfArrayLike$3(O);
+           result = IS_CONSTRUCTOR ? new this(length) : Array$1(length);
+           for (;length > index; index++) {
+             value = mapping ? mapfn(O[index], index) : O[index];
+             createProperty(result, index, value);
+           }
+         }
+         result.length = index;
+         return result;
+       };
+
+       var $$D = _export;
+       var from = arrayFrom$1;
+       var checkCorrectnessOfIteration = checkCorrectnessOfIteration$4;
+
        var INCORRECT_ITERATION = !checkCorrectnessOfIteration(function (iterable) {
          // eslint-disable-next-line es/no-array-from -- required for testing
          Array.from(iterable);
 
        // `Array.from` method
        // https://tc39.es/ecma262/#sec-array.from
-       _export({ target: 'Array', stat: true, forced: INCORRECT_ITERATION }, {
-         from: arrayFrom
+       $$D({ target: 'Array', stat: true, forced: INCORRECT_ITERATION }, {
+         from: from
        });
 
+       var $$C = _export;
+       var fill = arrayFill$1;
+       var addToUnscopables$4 = addToUnscopables$6;
+
        // `Array.prototype.fill` method
        // https://tc39.es/ecma262/#sec-array.prototype.fill
-       _export({ target: 'Array', proto: true }, {
-         fill: arrayFill
+       $$C({ target: 'Array', proto: true }, {
+         fill: fill
        });
 
        // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables('fill');
+       addToUnscopables$4('fill');
 
+       var $$B = _export;
        var $some = arrayIteration.some;
+       var arrayMethodIsStrict$4 = arrayMethodIsStrict$9;
 
-
-       var STRICT_METHOD$3 = arrayMethodIsStrict('some');
+       var STRICT_METHOD$4 = arrayMethodIsStrict$4('some');
 
        // `Array.prototype.some` method
        // https://tc39.es/ecma262/#sec-array.prototype.some
-       _export({ target: 'Array', proto: true, forced: !STRICT_METHOD$3 }, {
+       $$B({ target: 'Array', proto: true, forced: !STRICT_METHOD$4 }, {
          some: function some(callbackfn /* , thisArg */) {
            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, typedArrayConstructorsRequireWrappers);
+       exportTypedArrayStaticMethod('from', typedArrayFrom, TYPED_ARRAYS_CONSTRUCTORS_REQUIRES_WRAPPERS);
+
+       var createTypedArrayConstructor = typedArrayConstructor.exports;
 
        // `Float64Array` constructor
        // https://tc39.es/ecma262/#sec-typedarray-objects
-       typedArrayConstructor('Float64', function (init) {
+       createTypedArrayConstructor('Float64', function (init) {
          return function Float64Array(data, byteOffset, length) {
            return init(this, data, byteOffset, length);
          };
          return Adder;
        }();
 
+       var $$A = _export;
+       var DESCRIPTORS$5 = descriptors;
+       var defineProperties$1 = objectDefineProperties.f;
+
        // `Object.defineProperties` method
        // https://tc39.es/ecma262/#sec-object.defineproperties
-       _export({ target: 'Object', stat: true, forced: !descriptors, sham: !descriptors }, {
-         defineProperties: objectDefineProperties
+       // eslint-disable-next-line es/no-object-defineproperties -- safe
+       $$A({ target: 'Object', stat: true, forced: Object.defineProperties !== defineProperties$1, sham: !DESCRIPTORS$5 }, {
+         defineProperties: defineProperties$1
        });
 
+       var collection = collection$2;
+       var collectionStrong = collectionStrong$2;
+
        // `Map` constructor
        // https://tc39.es/ecma262/#sec-map-objects
        collection('Map', function (init) {
          return function Map() { return init(this, arguments.length ? arguments[0] : undefined); };
        }, collectionStrong);
 
+       var $$z = _export;
+       var uncurryThis$f = functionUncurryThis;
+       var aCallable$1 = aCallable$a;
+       var toObject$2 = toObject$i;
+       var lengthOfArrayLike$2 = lengthOfArrayLike$i;
+       var toString$a = toString$k;
+       var fails$b = fails$V;
+       var internalSort = arraySort$1;
+       var arrayMethodIsStrict$3 = arrayMethodIsStrict$9;
+       var FF = engineFfVersion;
+       var IE_OR_EDGE = engineIsIeOrEdge;
+       var V8 = engineV8Version;
+       var WEBKIT = engineWebkitVersion;
+
        var test = [];
-       var nativeSort = test.sort;
+       var un$Sort = uncurryThis$f(test.sort);
+       var push$3 = uncurryThis$f(test.push);
 
        // IE8-
-       var FAILS_ON_UNDEFINED = fails(function () {
+       var FAILS_ON_UNDEFINED = fails$b(function () {
          test.sort(undefined);
        });
        // V8 bug
-       var FAILS_ON_NULL = fails(function () {
+       var FAILS_ON_NULL = fails$b(function () {
          test.sort(null);
        });
        // Old WebKit
-       var STRICT_METHOD$2 = arrayMethodIsStrict('sort');
+       var STRICT_METHOD$3 = arrayMethodIsStrict$3('sort');
 
-       var STABLE_SORT = !fails(function () {
+       var STABLE_SORT = !fails$b(function () {
          // feature detection can be too slow, so check engines versions
-         if (engineV8Version) return engineV8Version < 70;
-         if (engineFfVersion && engineFfVersion > 3) return;
-         if (engineIsIeOrEdge) return true;
-         if (engineWebkitVersion) return engineWebkitVersion < 603;
+         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;
          return result !== 'DGBEFHACIJK';
        });
 
-       var FORCED$5 = FAILS_ON_UNDEFINED || !FAILS_ON_NULL || !STRICT_METHOD$2 || !STABLE_SORT;
+       var FORCED$7 = FAILS_ON_UNDEFINED || !FAILS_ON_NULL || !STRICT_METHOD$3 || !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;
+           return toString$a(x) > toString$a(y) ? 1 : -1;
          };
        };
 
        // `Array.prototype.sort` method
        // https://tc39.es/ecma262/#sec-array.prototype.sort
-       _export({ target: 'Array', proto: true, forced: FORCED$5 }, {
+       $$z({ target: 'Array', proto: true, forced: FORCED$7 }, {
          sort: function sort(comparefn) {
-           if (comparefn !== undefined) aFunction(comparefn);
+           if (comparefn !== undefined) aCallable$1(comparefn);
 
-           var array = toObject(this);
+           var array = toObject$2(this);
 
-           if (STABLE_SORT) return comparefn === undefined ? nativeSort.call(array) : nativeSort.call(array, comparefn);
+           if (STABLE_SORT) return comparefn === undefined ? un$Sort(array) : un$Sort(array, comparefn);
 
            var items = [];
-           var arrayLength = toLength(array.length);
+           var arrayLength = lengthOfArrayLike$2(array);
            var itemsLength, index;
 
            for (index = 0; index < arrayLength; index++) {
-             if (index in array) items.push(array[index]);
+             if (index in array) push$3(items, array[index]);
            }
 
-           items = arraySort(items, getSortCompare(comparefn));
+           internalSort(items, getSortCompare(comparefn));
+
            itemsLength = items.length;
            index = 0;
 
 
        // ISC license, Copyright 2018 Vladimir Agafonkin.
 
-       function quickselect$2(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 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$2(array, k, newLeft, newRight, compare);
+             quickselect$3(array, k, newLeft, newRight, compare);
            }
 
            var t = array[k];
          var n,
              i = (n - 1) * p,
              i0 = Math.floor(i),
-             value0 = max(quickselect$2(values, i0).subarray(0, 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);
        }
        // `SameValue` abstract operation
        // https://tc39.es/ecma262/#sec-samevalue
        // eslint-disable-next-line es/no-object-is -- safe
-       var sameValue = Object.is || function is(x, y) {
+       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;
        };
 
+       var $$y = _export;
+
        // eslint-disable-next-line es/no-math-hypot -- required for testing
        var $hypot = Math.hypot;
        var abs$3 = Math.abs;
 
        // `Math.hypot` method
        // https://tc39.es/ecma262/#sec-math.hypot
-       _export({ target: 'Math', stat: true, forced: BUGGY }, {
+       $$y({ target: 'Math', stat: true, forced: BUGGY }, {
          // eslint-disable-next-line no-unused-vars -- required for `.length`
          hypot: function hypot(value1, value2) {
            var sum = 0;
          return (x = +x) == 0 || x != x ? x : x < 0 ? -1 : 1;
        };
 
+       var $$x = _export;
+       var sign$1 = mathSign;
+
        // `Math.sign` method
        // https://tc39.es/ecma262/#sec-math.sign
-       _export({ target: 'Math', stat: true }, {
-         sign: mathSign
+       $$x({ target: 'Math', stat: true }, {
+         sign: sign$1
        });
 
        var epsilon$1 = 1e-6;
        // constants
        var TAU = 2 * Math.PI;
        var EQUATORIAL_RADIUS = 6356752.314245179;
-       var POLAR_RADIUS$1 = 6378137.0;
+       var POLAR_RADIUS = 6378137.0;
        function geoLatToMeters(dLat) {
-         return dLat * (TAU * POLAR_RADIUS$1 / 360);
+         return dLat * (TAU * POLAR_RADIUS / 360);
        }
        function geoLonToMeters(dLon, atLat) {
          return Math.abs(atLat) >= 90 ? 0 : dLon * (TAU * EQUATORIAL_RADIUS / 360) * Math.abs(Math.cos(atLat * (Math.PI / 180)));
        }
        function geoMetersToLat(m) {
-         return m / (TAU * POLAR_RADIUS$1 / 360);
+         return m / (TAU * POLAR_RADIUS / 360);
        }
        function geoMetersToLon(m, atLat) {
          return Math.abs(atLat) >= 90 ? 0 : m / (TAU * EQUATORIAL_RADIUS / 360) / Math.abs(Math.cos(atLat * (Math.PI / 180)));
        }
        function geoMetersToOffset(meters, tileSize) {
          tileSize = tileSize || 256;
-         return [meters[0] * tileSize / (TAU * EQUATORIAL_RADIUS), -meters[1] * tileSize / (TAU * POLAR_RADIUS$1)];
+         return [meters[0] * tileSize / (TAU * EQUATORIAL_RADIUS), -meters[1] * tileSize / (TAU * POLAR_RADIUS)];
        }
        function geoOffsetToMeters(offset, tileSize) {
          tileSize = tileSize || 256;
-         return [offset[0] * TAU * EQUATORIAL_RADIUS / tileSize, -offset[1] * TAU * POLAR_RADIUS$1 / tileSize];
+         return [offset[0] * TAU * EQUATORIAL_RADIUS / tileSize, -offset[1] * TAU * POLAR_RADIUS / tileSize];
        } // Equirectangular approximation of spherical distances on Earth
 
        function geoSphericalDistance(a, b) {
          }
        });
 
+       var $$w = _export;
        var $every = arrayIteration.every;
+       var arrayMethodIsStrict$2 = arrayMethodIsStrict$9;
 
-
-       var STRICT_METHOD$1 = arrayMethodIsStrict('every');
+       var STRICT_METHOD$2 = arrayMethodIsStrict$2('every');
 
        // `Array.prototype.every` method
        // https://tc39.es/ecma262/#sec-array.prototype.every
-       _export({ target: 'Array', proto: true, forced: !STRICT_METHOD$1 }, {
+       $$w({ target: 'Array', proto: true, forced: !STRICT_METHOD$2 }, {
          every: function every(callbackfn /* , thisArg */) {
            return $every(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
          }
        });
 
+       var $$v = _export;
        var $reduce = arrayReduce.left;
+       var arrayMethodIsStrict$1 = arrayMethodIsStrict$9;
+       var CHROME_VERSION$1 = engineV8Version;
+       var IS_NODE$1 = engineIsNode;
 
-
-
-
-       var STRICT_METHOD = arrayMethodIsStrict('reduce');
+       var STRICT_METHOD$1 = arrayMethodIsStrict$1('reduce');
        // Chrome 80-82 has a critical bug
        // https://bugs.chromium.org/p/chromium/issues/detail?id=1049982
-       var CHROME_BUG = !engineIsNode && engineV8Version > 79 && engineV8Version < 83;
+       var CHROME_BUG$1 = !IS_NODE$1 && CHROME_VERSION$1 > 79 && CHROME_VERSION$1 < 83;
 
        // `Array.prototype.reduce` method
        // https://tc39.es/ecma262/#sec-array.prototype.reduce
-       _export({ target: 'Array', proto: true, forced: !STRICT_METHOD || CHROME_BUG }, {
+       $$v({ target: 'Array', proto: true, forced: !STRICT_METHOD$1 || CHROME_BUG$1 }, {
          reduce: function reduce(callbackfn /* , initialValue */) {
-           return $reduce(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
+           var length = arguments.length;
+           return $reduce(this, callbackfn, length, length > 1 ? arguments[1] : undefined);
          }
        });
 
          return new Selection$1(subgroups, parents);
        }
 
+       var $$u = _export;
        var $find = arrayIteration.find;
-
+       var addToUnscopables$3 = addToUnscopables$6;
 
        var FIND = 'find';
        var SKIPS_HOLES$1 = true;
 
        // `Array.prototype.find` method
        // https://tc39.es/ecma262/#sec-array.prototype.find
-       _export({ target: 'Array', proto: true, forced: SKIPS_HOLES$1 }, {
+       $$u({ target: 'Array', proto: true, forced: SKIPS_HOLES$1 }, {
          find: function find(callbackfn /* , that = undefined */) {
            return $find(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
          }
        });
 
        // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables(FIND);
+       addToUnscopables$3(FIND);
 
        function matcher (selector) {
          return function () {
        }
 
        function defaultView (node) {
-         return node.ownerDocument && node.ownerDocument.defaultView || // node is a Node
-         node.document && node // node is a Window
+         return node.ownerDocument && node.ownerDocument.defaultView // node is a Node
+         || node.document && node // node is a Window
          || node.defaultView; // node is a Document
        }
 
          return drag;
        }
 
+       var DESCRIPTORS$4 = descriptors;
+       var global$b = global$1o;
+       var uncurryThis$e = functionUncurryThis;
+       var isForced$1 = isForced_1;
+       var inheritIfRequired$1 = inheritIfRequired$4;
+       var createNonEnumerableProperty = createNonEnumerableProperty$b;
        var defineProperty$1 = objectDefineProperty.f;
        var getOwnPropertyNames$1 = objectGetOwnPropertyNames.f;
-
-
-
-
-
-
+       var isPrototypeOf$1 = objectIsPrototypeOf;
+       var isRegExp$1 = isRegexp;
+       var toString$9 = toString$k;
+       var regExpFlags$1 = regexpFlags$1;
+       var stickyHelpers = regexpStickyHelpers;
+       var redefine$3 = redefine$h.exports;
+       var fails$a = fails$V;
+       var hasOwn$2 = hasOwnProperty_1;
        var enforceInternalState = internalState.enforce;
-
-
-
-
-
-       var MATCH$1 = wellKnownSymbol('match');
-       var NativeRegExp = global$2.RegExp;
-       var RegExpPrototype = NativeRegExp.prototype;
+       var setSpecies = setSpecies$5;
+       var wellKnownSymbol$1 = wellKnownSymbol$t;
+       var UNSUPPORTED_DOT_ALL = regexpUnsupportedDotAll;
+       var UNSUPPORTED_NCG = regexpUnsupportedNcg;
+
+       var MATCH$1 = wellKnownSymbol$1('match');
+       var NativeRegExp = global$b.RegExp;
+       var RegExpPrototype$1 = NativeRegExp.prototype;
+       var SyntaxError$1 = global$b.SyntaxError;
+       var getFlags = uncurryThis$e(regExpFlags$1);
+       var exec$2 = uncurryThis$e(RegExpPrototype$1.exec);
+       var charAt$1 = uncurryThis$e(''.charAt);
+       var replace$3 = uncurryThis$e(''.replace);
+       var stringIndexOf$1 = uncurryThis$e(''.indexOf);
+       var stringSlice$4 = uncurryThis$e(''.slice);
        // TODO: Use only propper RegExpIdentifierName
        var IS_NCG = /^\?<[^\s\d!#%&*+<=>@^][^\s!#%&*+<=>@^]*>/;
        var re1 = /a/g;
        // "new" should create a new object, old webkit bug
        var CORRECT_NEW = new NativeRegExp(re1) !== re1;
 
-       var UNSUPPORTED_Y = regexpStickyHelpers.UNSUPPORTED_Y;
+       var MISSED_STICKY = stickyHelpers.MISSED_STICKY;
+       var UNSUPPORTED_Y = stickyHelpers.UNSUPPORTED_Y;
 
-       var BASE_FORCED = descriptors &&
-         (!CORRECT_NEW || UNSUPPORTED_Y || regexpUnsupportedDotAll || regexpUnsupportedNcg || fails(function () {
+       var BASE_FORCED = DESCRIPTORS$4 &&
+         (!CORRECT_NEW || MISSED_STICKY || UNSUPPORTED_DOT_ALL || UNSUPPORTED_NCG || fails$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 brackets = false;
          var chr;
          for (; index <= length; index++) {
-           chr = string.charAt(index);
+           chr = charAt$1(string, index);
            if (chr === '\\') {
-             result += chr + string.charAt(++index);
+             result += chr + charAt$1(string, ++index);
              continue;
            }
            if (!brackets && chr === '.') {
          var groupname = '';
          var chr;
          for (; index <= length; index++) {
-           chr = string.charAt(index);
+           chr = charAt$1(string, index);
            if (chr === '\\') {
-             chr = chr + string.charAt(++index);
+             chr = chr + charAt$1(string, ++index);
            } else if (chr === ']') {
              brackets = false;
            } else if (!brackets) switch (true) {
                brackets = true;
                break;
              case chr === '(':
-               if (IS_NCG.test(string.slice(index + 1))) {
+               if (exec$2(IS_NCG, stringSlice$4(string, index + 1))) {
                  index += 2;
                  ncg = true;
                }
                groupid++;
                continue;
              case chr === '>' && ncg:
-               if (groupname === '' || has$1(names, groupname)) {
-                 throw new SyntaxError('Invalid capture group name');
+               if (groupname === '' || hasOwn$2(names, groupname)) {
+                 throw new SyntaxError$1('Invalid capture group name');
                }
                names[groupname] = true;
-               named.push([groupname, groupid]);
+               named[named.length] = [groupname, groupid];
                ncg = false;
                groupname = '';
                continue;
 
        // `RegExp` constructor
        // https://tc39.es/ecma262/#sec-regexp-constructor
-       if (isForced_1('RegExp', BASE_FORCED)) {
+       if (isForced$1('RegExp', BASE_FORCED)) {
          var RegExpWrapper = function RegExp(pattern, flags) {
-           var thisIsRegExp = this instanceof RegExpWrapper;
-           var patternIsRegExp = isRegexp(pattern);
+           var thisIsRegExp = isPrototypeOf$1(RegExpPrototype$1, this);
+           var patternIsRegExp = isRegExp$1(pattern);
            var flagsAreUndefined = flags === undefined;
            var groups = [];
-           var rawPattern, rawFlags, dotAll, sticky, handled, result, state;
+           var rawPattern = pattern;
+           var rawFlags, dotAll, sticky, handled, result, state;
 
-           if (!thisIsRegExp && patternIsRegExp && pattern.constructor === RegExpWrapper && flagsAreUndefined) {
+           if (!thisIsRegExp && patternIsRegExp && flagsAreUndefined && pattern.constructor === RegExpWrapper) {
              return pattern;
            }
 
-           if (CORRECT_NEW) {
-             if (patternIsRegExp && !flagsAreUndefined) pattern = pattern.source;
-           } else if (pattern instanceof RegExpWrapper) {
-             if (flagsAreUndefined) flags = regexpFlags.call(pattern);
+           if (patternIsRegExp || isPrototypeOf$1(RegExpPrototype$1, pattern)) {
              pattern = pattern.source;
+             if (flagsAreUndefined) flags = 'flags' in rawPattern ? rawPattern.flags : getFlags(rawPattern);
            }
 
-           pattern = pattern === undefined ? '' : String(pattern);
-           flags = flags === undefined ? '' : String(flags);
+           pattern = pattern === undefined ? '' : toString$9(pattern);
+           flags = flags === undefined ? '' : toString$9(flags);
            rawPattern = pattern;
 
-           if (regexpUnsupportedDotAll && 'dotAll' in re1) {
-             dotAll = !!flags && flags.indexOf('s') > -1;
-             if (dotAll) flags = flags.replace(/s/g, '');
+           if (UNSUPPORTED_DOT_ALL && 'dotAll' in re1) {
+             dotAll = !!flags && stringIndexOf$1(flags, 's') > -1;
+             if (dotAll) flags = replace$3(flags, /s/g, '');
            }
 
            rawFlags = flags;
 
-           if (UNSUPPORTED_Y && 'sticky' in re1) {
-             sticky = !!flags && flags.indexOf('y') > -1;
-             if (sticky) flags = flags.replace(/y/g, '');
+           if (MISSED_STICKY && 'sticky' in re1) {
+             sticky = !!flags && stringIndexOf$1(flags, 'y') > -1;
+             if (sticky && UNSUPPORTED_Y) flags = replace$3(flags, /y/g, '');
            }
 
-           if (regexpUnsupportedNcg) {
+           if (UNSUPPORTED_NCG) {
              handled = handleNCG(pattern);
              pattern = handled[0];
              groups = handled[1];
            }
 
-           result = inheritIfRequired(
-             CORRECT_NEW ? new NativeRegExp(pattern, flags) : NativeRegExp(pattern, flags),
-             thisIsRegExp ? this : RegExpPrototype,
-             RegExpWrapper
-           );
+           result = inheritIfRequired$1(NativeRegExp(pattern, flags), thisIsRegExp ? this : RegExpPrototype$1, RegExpWrapper);
 
            if (dotAll || sticky || groups.length) {
              state = enforceInternalState(result);
            proxy(keys$1[index$1++]);
          }
 
-         RegExpPrototype.constructor = RegExpWrapper;
-         RegExpWrapper.prototype = RegExpPrototype;
-         redefine(global$2, 'RegExp', RegExpWrapper);
+         RegExpPrototype$1.constructor = RegExpWrapper;
+         RegExpWrapper.prototype = RegExpPrototype$1;
+         redefine$3(global$b, 'RegExp', RegExpWrapper);
        }
 
        // https://tc39.es/ecma262/#sec-get-regexp-@@species
              };
            } // General case.
            else {
-               var d1 = Math.sqrt(d2),
-                   b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1),
-                   b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1),
-                   r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0),
-                   r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
-               S = (r1 - r0) / rho;
-
-               i = function i(t) {
-                 var s = t * S,
-                     coshr0 = cosh(r0),
-                     u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0));
-                 return [ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / cosh(rho * s + r0)];
-               };
-             }
+             var d1 = Math.sqrt(d2),
+                 b0 = (w1 * w1 - w0 * w0 + rho4 * d2) / (2 * w0 * rho2 * d1),
+                 b1 = (w1 * w1 - w0 * w0 - rho4 * d2) / (2 * w1 * rho2 * d1),
+                 r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0),
+                 r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1);
+             S = (r1 - r0) / rho;
+
+             i = function i(t) {
+               var s = t * S,
+                   coshr0 = cosh(r0),
+                   u = w0 / (rho2 * d1) * (coshr0 * tanh(rho * s + r0) - sinh(r0));
+               return [ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / cosh(rho * s + r0)];
+             };
+           }
 
            i.duration = S * 1000 * rho / Math.SQRT2;
            return i;
          return samples;
        }
 
+       var $$t = _export;
+       var bind$4 = functionBind;
+
        // `Function.prototype.bind` method
        // https://tc39.es/ecma262/#sec-function.prototype.bind
-       _export({ target: 'Function', proto: true }, {
-         bind: functionBind
+       $$t({ target: 'Function', proto: true, forced: Function.bind !== bind$4 }, {
+         bind: bind$4
        });
 
        var frame = 0,
                delete schedules[i];
              } // Cancel any pre-empted transitions.
              else if (+i < id) {
-                 o.state = ENDED;
-                 o.timer.stop();
-                 o.on.call("cancel", node, node.__data__, o.index, o.group);
-                 delete schedules[i];
-               }
+               o.state = ENDED;
+               o.timer.stop();
+               o.on.call("cancel", node, node.__data__, o.index, o.group);
+               delete schedules[i];
+             }
            } // Defer the first tick to end of the current frame; see d3/d3#1576.
            // Note the transition may be canceled after start and before the first tick!
            // Note this must be scheduled before the start event; see d3/d3-transition#16!
              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);
-                 }
+                 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, t);
              };
            });
              clearTimeout(g.wheel);
            } // If this wheel event won’t trigger a transform change, ignore it.
            else if (t.k === k) return; // Otherwise, capture the mouse point and location at the start.
-             else {
-                 g.mouse = [p, t.invert(p)];
-                 interrupt(this);
-                 g.start();
-               }
+           else {
+             g.mouse = [p, t.invert(p)];
+             interrupt(this);
+             g.start();
+           }
 
            noevent(event);
            g.wheel = setTimeout(wheelidled, wheelDelay);
          return score;
        }
 
-       var onFreeze = internalMetadata.onFreeze;
+       var call$2 = functionCall;
+       var fixRegExpWellKnownSymbolLogic$1 = fixRegexpWellKnownSymbolLogic;
+       var anObject$1 = anObject$n;
+       var toLength$3 = toLength$c;
+       var toString$8 = toString$k;
+       var requireObjectCoercible$7 = requireObjectCoercible$e;
+       var getMethod$1 = getMethod$7;
+       var advanceStringIndex = advanceStringIndex$3;
+       var regExpExec$1 = regexpExecAbstract;
+
+       // @@match logic
+       fixRegExpWellKnownSymbolLogic$1('match', function (MATCH, nativeMatch, maybeCallNative) {
+         return [
+           // `String.prototype.match` method
+           // https://tc39.es/ecma262/#sec-string.prototype.match
+           function match(regexp) {
+             var O = requireObjectCoercible$7(this);
+             var matcher = regexp == undefined ? undefined : getMethod$1(regexp, MATCH);
+             return matcher ? call$2(matcher, regexp, O) : new RegExp(regexp)[MATCH](toString$8(O));
+           },
+           // `RegExp.prototype[@@match]` method
+           // https://tc39.es/ecma262/#sec-regexp.prototype-@@match
+           function (string) {
+             var rx = anObject$1(this);
+             var S = toString$8(string);
+             var res = maybeCallNative(nativeMatch, rx, S);
+
+             if (res.done) return res.value;
+
+             if (!rx.global) return regExpExec$1(rx, S);
+
+             var fullUnicode = rx.unicode;
+             rx.lastIndex = 0;
+             var A = [];
+             var n = 0;
+             var result;
+             while ((result = regExpExec$1(rx, S)) !== null) {
+               var matchStr = toString$8(result[0]);
+               A[n] = matchStr;
+               if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength$3(rx.lastIndex), fullUnicode);
+               n++;
+             }
+             return n === 0 ? null : A;
+           }
+         ];
+       });
+
+       var $$s = _export;
+       var FREEZING = freezing;
+       var fails$9 = fails$V;
+       var isObject$4 = isObject$s;
+       var onFreeze = internalMetadata.exports.onFreeze;
 
        // eslint-disable-next-line es/no-object-freeze -- safe
        var $freeze = Object.freeze;
-       var FAILS_ON_PRIMITIVES = fails(function () { $freeze(1); });
+       var FAILS_ON_PRIMITIVES = fails$9(function () { $freeze(1); });
 
        // `Object.freeze` method
        // https://tc39.es/ecma262/#sec-object.freeze
-       _export({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !freezing }, {
+       $$s({ target: 'Object', stat: true, forced: FAILS_ON_PRIMITIVES, sham: !FREEZING }, {
          freeze: function freeze(it) {
            return $freeze && isObject$4(it) ? $freeze(onFreeze(it)) : it;
          }
          }, []);
        }
 
-       // @@match logic
-       fixRegexpWellKnownSymbolLogic('match', function (MATCH, nativeMatch, maybeCallNative) {
-         return [
-           // `String.prototype.match` method
-           // https://tc39.es/ecma262/#sec-string.prototype.match
-           function match(regexp) {
-             var O = requireObjectCoercible(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
-           // https://tc39.es/ecma262/#sec-regexp.prototype-@@match
-           function (string) {
-             var res = maybeCallNative(nativeMatch, this, string);
-             if (res.done) return res.value;
+       var uncurryThis$d = functionUncurryThis;
 
-             var rx = anObject(this);
-             var S = String(string);
+       // `thisNumberValue` abstract operation
+       // https://tc39.es/ecma262/#sec-thisnumbervalue
+       var thisNumberValue$3 = uncurryThis$d(1.0.valueOf);
+
+       var DESCRIPTORS$3 = descriptors;
+       var global$a = global$1o;
+       var uncurryThis$c = functionUncurryThis;
+       var isForced = isForced_1;
+       var redefine$2 = redefine$h.exports;
+       var hasOwn$1 = hasOwnProperty_1;
+       var inheritIfRequired = inheritIfRequired$4;
+       var isPrototypeOf = objectIsPrototypeOf;
+       var isSymbol$1 = isSymbol$6;
+       var toPrimitive$1 = toPrimitive$3;
+       var fails$8 = fails$V;
+       var getOwnPropertyNames = objectGetOwnPropertyNames.f;
+       var getOwnPropertyDescriptor$2 = objectGetOwnPropertyDescriptor.f;
+       var defineProperty = objectDefineProperty.f;
+       var thisNumberValue$2 = thisNumberValue$3;
+       var trim$2 = stringTrim.trim;
 
-             if (!rx.global) return regexpExecAbstract(rx, S);
+       var NUMBER = 'Number';
+       var NativeNumber = global$a[NUMBER];
+       var NumberPrototype = NativeNumber.prototype;
+       var TypeError$4 = global$a.TypeError;
+       var arraySlice$1 = uncurryThis$c(''.slice);
+       var charCodeAt$1 = uncurryThis$c(''.charCodeAt);
+
+       // `ToNumeric` abstract operation
+       // https://tc39.es/ecma262/#sec-tonumeric
+       var toNumeric = function (value) {
+         var primValue = toPrimitive$1(value, 'number');
+         return typeof primValue == 'bigint' ? primValue : toNumber$1(primValue);
+       };
 
-             var fullUnicode = rx.unicode;
-             rx.lastIndex = 0;
-             var A = [];
-             var n = 0;
-             var result;
-             while ((result = regexpExecAbstract(rx, S)) !== null) {
-               var matchStr = String(result[0]);
-               A[n] = matchStr;
-               if (matchStr === '') rx.lastIndex = advanceStringIndex(S, toLength(rx.lastIndex), fullUnicode);
-               n++;
+       // `ToNumber` abstract operation
+       // https://tc39.es/ecma262/#sec-tonumber
+       var toNumber$1 = function (argument) {
+         var it = toPrimitive$1(argument, 'number');
+         var first, third, radix, maxCode, digits, length, index, code;
+         if (isSymbol$1(it)) throw TypeError$4('Cannot convert a Symbol value to a number');
+         if (typeof it == 'string' && it.length > 2) {
+           it = trim$2(it);
+           first = charCodeAt$1(it, 0);
+           if (first === 43 || first === 45) {
+             third = charCodeAt$1(it, 2);
+             if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix
+           } else if (first === 48) {
+             switch (charCodeAt$1(it, 1)) {
+               case 66: case 98: radix = 2; maxCode = 49; break; // fast equal of /^0b[01]+$/i
+               case 79: case 111: radix = 8; maxCode = 55; break; // fast equal of /^0o[0-7]+$/i
+               default: return +it;
              }
-             return n === 0 ? null : A;
+             digits = arraySlice$1(it, 2);
+             length = digits.length;
+             for (index = 0; index < length; index++) {
+               code = charCodeAt$1(digits, 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 n = arguments.length < 1 ? 0 : NativeNumber(toNumeric(value));
+           var dummy = this;
+           // check on 1..constructor(foo) case
+           return isPrototypeOf(NumberPrototype, dummy) && fails$8(function () { thisNumberValue$2(dummy); })
+             ? inheritIfRequired(Object(n), dummy, NumberWrapper) : n;
+         };
+         for (var keys = DESCRIPTORS$3 ? getOwnPropertyNames(NativeNumber) : (
+           // ES3:
+           'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' +
+           // ES2015 (in case, if modules with ES2015 Number statics required before):
+           'EPSILON,MAX_SAFE_INTEGER,MIN_SAFE_INTEGER,isFinite,isInteger,isNaN,isSafeInteger,parseFloat,parseInt,' +
+           // ESNext
+           'fromString,range'
+         ).split(','), j$1 = 0, key; keys.length > j$1; j$1++) {
+           if (hasOwn$1(NativeNumber, key = keys[j$1]) && !hasOwn$1(NumberWrapper, key)) {
+             defineProperty(NumberWrapper, key, getOwnPropertyDescriptor$2(NativeNumber, key));
+           }
+         }
+         NumberWrapper.prototype = NumberPrototype;
+         NumberPrototype.constructor = NumberWrapper;
+         redefine$2(global$a, NUMBER, NumberWrapper);
+       }
+
+       var diacritics = {};
 
-       var remove$6 = removeDiacritics;
+       var remove$6 = diacritics.remove = removeDiacritics;
        var replacementList = [{
          base: ' ',
          chars: "\xA0"
        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$1].base;
+         for (var j = 0; j < chars.length; j += 1) {
+           diacriticsMap[chars[j]] = replacementList[i$1].base;
          }
        }
 
          });
        }
 
-       var replacementList_1 = replacementList;
-       var diacriticsMap_1 = diacriticsMap;
-       var diacritics = {
-         remove: remove$6,
-         replacementList: replacementList_1,
-         diacriticsMap: diacriticsMap_1
-       };
+       diacritics.replacementList = replacementList;
+       diacritics.diacriticsMap = diacriticsMap;
+
+       var lib = {};
 
+       var isArabic$1 = {};
+
+       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
        ];
 
          return false;
        }
 
-       var isArabic_2 = isArabic;
+       isArabic$1.isArabic = isArabic;
 
        function isMath(_char2) {
          if (_char2.length > 2) {
          return code >= 0x660 && code <= 0x66C || code >= 0x6F0 && code <= 0x6F9;
        }
 
-       var isMath_1 = isMath;
-       var isArabic_1 = /*#__PURE__*/Object.defineProperty({
-         isArabic: isArabic_2,
-         isMath: isMath_1
-       }, '__esModule', {
+       isArabic$1.isMath = isMath;
+
+       var GlyphSplitter$1 = {};
+
+       var reference = {};
+
+       var unicodeArabic = {};
+
+       Object.defineProperty(unicodeArabic, "__esModule", {
          value: true
        });
-
        var arabicReference = {
          "alef": {
            "normal": ["\u0627"],
            "normal": ["\u08BD"]
          }
        };
-       var _default$3 = arabicReference;
-       var unicodeArabic = /*#__PURE__*/Object.defineProperty({
-         "default": _default$3
-       }, '__esModule', {
+
+       unicodeArabic["default"] = arabicReference;
+
+       var unicodeLigatures = {};
+
+       Object.defineProperty(unicodeLigatures, "__esModule", {
          value: true
        });
-
        var ligatureReference = {
          "\u0626\u0627": {
            "isolated": "\uFBEA",
            "\u0631\u06CC\u0627\u0644": "\uFDFC"
          }
        };
-       var _default$2 = ligatureReference;
-       var unicodeLigatures = /*#__PURE__*/Object.defineProperty({
-         "default": _default$2
-       }, '__esModule', {
-         value: true
-       });
 
-       var reference = createCommonjsModule(function (module, exports) {
+       unicodeLigatures["default"] = ligatureReference;
 
-         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]);
-         //   }
-         // }
+       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";
-         exports.tashkeel = tashkeel;
+       var tashkeel = "\u0605\u0640\u0670\u0674\u06DF\u06E7\u06E8";
+       reference.tashkeel = tashkeel;
 
-         function addToTashkeel(start, finish) {
-           for (var i = start; i <= finish; i++) {
-             exports.tashkeel = tashkeel += String.fromCharCode(i);
-           }
+       function addToTashkeel(start, finish) {
+         for (var i = start; i <= finish; i++) {
+           reference.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;
+       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;
 
-         function addToLineBreakers(start, finish) {
-           for (var i = start; i <= finish; i++) {
-             exports.lineBreakers = lineBreakers += String.fromCharCode(i);
-           }
+       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
 
-         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(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(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(0xFE80, 0xFEFC); // presentation forms look like they could connect, but never do
-         // numerals, math
+       addToLineBreakers(0x10E60, 0x10E7F);
+       addToLineBreakers(0x1EC70, 0x1ECBF);
+       addToLineBreakers(0x1EE00, 0x1EEFF);
 
-         addToLineBreakers(0x10E60, 0x10E7F);
-         addToLineBreakers(0x1EC70, 0x1ECBF);
-         addToLineBreakers(0x1EE00, 0x1EEFF);
+       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.isArabic(letter)) {
-             if (reference.tashkeel.indexOf(letter) > -1) {
+           if (isArabic_1$6.isArabic(letter)) {
+             if (reference_1$5.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)) {
+             } 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);
            }
 
-           if (reference.tashkeel.indexOf(letter) === -1) {
+           if (reference_1$5.tashkeel.indexOf(letter) === -1) {
              lastLetter = letter;
            }
          });
          return letters;
        }
 
-       var GlyphSplitter_2 = GlyphSplitter;
-       var GlyphSplitter_1 = /*#__PURE__*/Object.defineProperty({
-         GlyphSplitter: GlyphSplitter_2
-       }, '__esModule', {
+       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.isArabic(letter) && isArabic_1.isArabic(lastLetter)) {
-             if (lastLetter.length && reference.tashkeel.indexOf(letter) > -1) {
+           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.lineBreakers.indexOf(lastLetter) > -1) {
+             } else if (reference_1$4.lineBreakers.indexOf(lastLetter) > -1) {
                letters.push(letter);
              } else {
                letters[letters.length - 1] += letter;
              letters.push(letter);
            }
 
-           if (reference.tashkeel.indexOf(letter) === -1) {
+           if (reference_1$4.tashkeel.indexOf(letter) === -1) {
              // don't allow tashkeel to hide line break
              lastLetter = letter;
            }
          return letters;
        }
 
-       var BaselineSplitter_2 = BaselineSplitter;
-       var BaselineSplitter_1 = /*#__PURE__*/Object.defineProperty({
-         BaselineSplitter: BaselineSplitter_2
-       }, '__esModule', {
+       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
 
          var returnable = '';
          word.split('').forEach(function (letter) {
-           if (!isArabic_1.isArabic(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
-             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++) {
            } // try ligatures
 
 
-           for (var v2 = 0; v2 < reference.ligatureList.length; v2++) {
-             var normalForm = reference.ligatureList[v2];
+           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(unicodeLigatures["default"][normalForm]);
+               var ligForms = Object.keys(unicode_ligatures_1$1["default"][normalForm]);
 
                for (var f = 0; f < ligForms.length; f++) {
-                 if (unicodeLigatures["default"][normalForm][ligForms[f]] === letter) {
+                 if (unicode_ligatures_1$1["default"][normalForm][ligForms[f]] === letter) {
                    returnable += normalForm;
                    return;
                  }
            } // try words ligatures
 
 
-           for (var v3 = 0; v3 < reference.ligatureWordList.length; v3++) {
-             var _normalForm = reference.ligatureWordList[v3];
+           for (var v3 = 0; v3 < reference_1$3.ligatureWordList.length; v3++) {
+             var _normalForm = reference_1$3.ligatureWordList[v3];
 
-             if (unicodeLigatures["default"].words[_normalForm] === letter) {
+             if (unicode_ligatures_1$1["default"].words[_normalForm] === letter) {
                returnable += _normalForm;
                return;
              }
          return returnable;
        }
 
-       var Normal_1 = Normal;
-       var Normalization = /*#__PURE__*/Object.defineProperty({
-         Normal: Normal_1
-       }, '__esModule', {
+       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;
 
        function CharShaper(letter, form) {
-         if (!isArabic_1.isArabic(letter)) {
+         if (!isArabic_1$3.isArabic(letter)) {
            // fail not Arabic
            throw new Error('Not Arabic');
          }
            return "\u0621";
          }
 
-         for (var w = 0; w < reference.letterList.length; w++) {
+         for (var w = 0; w < reference_1$2.letterList.length; w++) {
            // ok so we are checking this potential lettertron
-           var letterForms = unicodeArabic["default"][reference.letterList[w]];
+           var letterForms = unicode_arabic_1$1["default"][reference_1$2.letterList[w]];
            var versions = Object.keys(letterForms);
 
            for (var v = 0; v < versions.length; v++) {
          }
        }
 
-       var CharShaper_2 = CharShaper;
-       var CharShaper_1 = /*#__PURE__*/Object.defineProperty({
-         CharShaper: CharShaper_2
-       }, '__esModule', {
+       CharShaper$1.CharShaper = CharShaper;
+
+       var WordShaper$2 = {};
+
+       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 nextLetter = ' ';
 
            for (var nxw = w + 1; nxw < word.length; nxw++) {
-             if (!isArabic_1.isArabic(word[nxw])) {
+             if (!isArabic_1$2.isArabic(word[nxw])) {
                break;
              }
 
-             if (reference.tashkeel.indexOf(word[nxw]) === -1) {
+             if (reference_1$1.tashkeel.indexOf(word[nxw]) === -1) {
                nextLetter = word[nxw];
                break;
              }
            }
 
-           if (!isArabic_1.isArabic(word[w]) || isArabic_1.isMath(word[w])) {
+           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.tashkeel.indexOf(word[w]) > -1) {
+           } 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.lineBreakers.indexOf(word[w]) > -1) {
+           } 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.CharShaper(word[w], state === 'initial' ? 'isolated' : 'final');
+             output += CharShaper_1$1.CharShaper(word[w], state === 'initial' ? 'isolated' : 'final');
              state = 'initial';
-           } else if (reference.lams.indexOf(word[w]) > -1 && reference.alefs.indexOf(nextLetter) > -1) {
+           } 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 += unicodeLigatures["default"][word[w] + nextLetter][state === 'initial' ? 'isolated' : 'final'];
+             output += unicode_ligatures_1["default"][word[w] + nextLetter][state === 'initial' ? 'isolated' : 'final'];
 
              while (word[w] !== nextLetter) {
                w++;
 
              state = 'initial';
            } else {
-             output += CharShaper_1.CharShaper(word[w], state);
+             output += CharShaper_1$1.CharShaper(word[w], state);
              state = 'medial';
            }
          }
          return output;
        }
 
-       var WordShaper_2 = WordShaper$1;
-       var WordShaper_1 = /*#__PURE__*/Object.defineProperty({
-         WordShaper: WordShaper_2
-       }, '__esModule', {
+       WordShaper$2.WordShaper = WordShaper$1;
+
+       var ParentLetter$1 = {};
+
+       Object.defineProperty(ParentLetter$1, "__esModule", {
          value: true
        });
+       var unicode_arabic_1 = unicodeArabic;
+       var isArabic_1$1 = isArabic$1;
+       var reference_1 = reference;
 
        function ParentLetter(letter) {
-         if (!isArabic_1.isArabic(letter)) {
+         if (!isArabic_1$1.isArabic(letter)) {
            throw new Error('Not an Arabic letter');
          }
 
-         for (var w = 0; w < reference.letterList.length; w++) {
+         for (var w = 0; w < reference_1.letterList.length; w++) {
            // ok so we are checking this potential lettertron
-           var letterForms = unicodeArabic["default"][reference.letterList[w]];
+           var letterForms = unicode_arabic_1["default"][reference_1.letterList[w]];
            var versions = Object.keys(letterForms);
 
            for (var v = 0; v < versions.length; v++) {
          }
        }
 
-       var ParentLetter_2 = ParentLetter;
+       ParentLetter$1.ParentLetter = ParentLetter;
 
        function GrandparentLetter(letter) {
-         if (!isArabic_1.isArabic(letter)) {
+         if (!isArabic_1$1.isArabic(letter)) {
            throw new Error('Not an Arabic letter');
          }
 
-         for (var w = 0; w < reference.letterList.length; w++) {
+         for (var w = 0; w < reference_1.letterList.length; w++) {
            // ok so we are checking this potential lettertron
-           var letterForms = unicodeArabic["default"][reference.letterList[w]];
+           var letterForms = unicode_arabic_1["default"][reference_1.letterList[w]];
            var versions = Object.keys(letterForms);
 
            for (var v = 0; v < versions.length; v++) {
          }
        }
 
-       var GrandparentLetter_1 = GrandparentLetter;
-       var ParentLetter_1 = /*#__PURE__*/Object.defineProperty({
-         ParentLetter: ParentLetter_2,
-         GrandparentLetter: GrandparentLetter_1
-       }, '__esModule', {
+       ParentLetter$1.GrandparentLetter = GrandparentLetter;
+
+       Object.defineProperty(lib, "__esModule", {
          value: true
        });
-
-       isArabic_1.isArabic;
-       GlyphSplitter_1.GlyphSplitter;
-       BaselineSplitter_1.BaselineSplitter;
-       Normalization.Normal;
-       CharShaper_1.CharShaper;
-       var WordShaper = WordShaper_1.WordShaper;
-       ParentLetter_1.ParentLetter;
-       ParentLetter_1.GrandparentLetter;
+       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) {
          return ret;
        }
 
-       var propertyIsEnumerable = objectPropertyIsEnumerable.f;
+       var DESCRIPTORS$2 = descriptors;
+       var uncurryThis$b = functionUncurryThis;
+       var objectKeys = objectKeys$4;
+       var toIndexedObject = toIndexedObject$d;
+       var $propertyIsEnumerable = objectPropertyIsEnumerable.f;
+
+       var propertyIsEnumerable = uncurryThis$b($propertyIsEnumerable);
+       var push$2 = uncurryThis$b([].push);
 
        // `Object.{ entries, values }` methods implementation
        var createMethod$1 = function (TO_ENTRIES) {
            var key;
            while (length > i) {
              key = keys[i++];
-             if (!descriptors || propertyIsEnumerable.call(O, key)) {
-               result.push(TO_ENTRIES ? [key, O[key]] : O[key]);
+             if (!DESCRIPTORS$2 || propertyIsEnumerable(O, key)) {
+               push$2(result, TO_ENTRIES ? [key, O[key]] : O[key]);
              }
            }
            return result;
          values: createMethod$1(false)
        };
 
+       var $$r = _export;
        var $values = objectToArray.values;
 
        // `Object.values` method
        // https://tc39.es/ecma262/#sec-object.values
-       _export({ target: 'Object', stat: true }, {
+       $$r({ target: 'Object', stat: true }, {
          values: function values(O) {
            return $values(O);
          }
              return delete s[k];
            }
          };
-       }(); //
+       }();
+
+       var _listeners = {}; //
        // corePreferences is an interface for persisting basic key-value strings
        // 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);
+           if (v === undefined) return _storage.getItem(k);else if (v === null) _storage.removeItem(k);else _storage.setItem(k, v);
+
+           if (_listeners[k]) {
+             _listeners[k].forEach(function (handler) {
+               return handler(v);
+             });
+           }
+
+           return true;
          } catch (e) {
            /* eslint-disable no-console */
            if (typeof console !== 'undefined') {
            }
            /* eslint-enable no-console */
 
+
+           return false;
          }
-       }
+       } // adds an event listener which is triggered whenever
+
+
+       corePreferences.onChange = function (k, handler) {
+         _listeners[k] = _listeners[k] || [];
 
-       var vparse = createCommonjsModule(function (module) {
+         _listeners[k].push(handler);
+       };
+
+       var vparse = {exports: {}};
+
+       (function (module) {
          (function (window) {
 
            function parseVersion(v) {
              window.parseVersion = parseVersion;
            }
          })(commonjsGlobal);
-       });
+       })(vparse);
+
+       var parseVersion = vparse.exports;
 
        var name = "iD";
-       var version = "2.20.1";
+       var version = "2.20.4";
        var description = "A friendly editor for OpenStreetMap";
        var main = "dist/iD.min.js";
        var repository = "github: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 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 test:spec","test:spec":"karma start karma.conf.js",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":"^17.0.0","@rollup/plugin-json":"^4.0.1","@rollup/plugin-node-resolve":"~11.2.0",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 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":"~5.0.0","@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:"^4.3.4","cldr-core":"37.0.0","cldr-localenames-full":"37.0.0",chalk:"^4.1.2","concat-files":"^0.1.1",d3:"~6.6.0","editor-layer-index":"github:osmlab/editor-layer-index#gh-pages",eslint:"^7.1.0","fetch-mock":"^9.11.0",gaze:"^1.1.3",glob:"^7.1.0",happen:"^0.3.2","js-yaml":"^4.0.0","json-stringify-pretty-compact":"^3.0.0",karma:"^6.3.5","karma-chrome-launcher":"^3.1.0","karma-coverage":"^2.0.3","karma-mocha":"^2.0.1","karma-remap-istanbul":"^0.6.0",mapillary_sprite_source:"^1.8.0","mapillary-js":"4.0.0",minimist:"^1.2.3",mocha:"^8.4.0","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",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:"^11.1.2","sinon-chai":"^3.7.0",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 = {
 
        function coreFileFetcher() {
          var ociVersion = packageJSON.devDependencies['osm-community-index'];
-         var v = vparse(ociVersion);
+         var v = parseVersion(ociVersion);
          var vMinor = "".concat(v.major, ".").concat(v.minor);
          var _this = {};
          var _inflight = {};
            var prom = _inflight[url];
 
            if (!prom) {
-             _inflight[url] = prom = utilFetchJson(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) {
          return _this;
        }
 
-       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 = classofRaw(objectCreate(NumberPrototype)) == NUMBER;
-
-       // `ToNumber` abstract operation
-       // https://tc39.es/ecma262/#sec-tonumber
-       var toNumber$1 = 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;
-       };
-
-       // `Number` constructor
-       // https://tc39.es/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$1(it)), dummy, NumberWrapper) : toNumber$1(it);
-         };
-         for (var keys = descriptors ? 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 = 0, key; keys.length > j; j++) {
-           if (has$1(NativeNumber, key = keys[j]) && !has$1(NumberWrapper, key)) {
-             defineProperty(NumberWrapper, key, getOwnPropertyDescriptor$2(NativeNumber, key));
-           }
-         }
-         NumberWrapper.prototype = NumberPrototype;
-         NumberPrototype.constructor = NumberWrapper;
-         redefine(global$2, NUMBER, NumberWrapper);
-       }
+       var global$9 = global$1o;
+       var toIntegerOrInfinity$1 = toIntegerOrInfinity$b;
+       var toString$7 = toString$k;
+       var requireObjectCoercible$6 = requireObjectCoercible$e;
 
-       // `thisNumberValue` abstract operation
-       // https://tc39.es/ecma262/#sec-thisnumbervalue
-       var thisNumberValue = function (value) {
-         if (typeof value != 'number' && classofRaw(value) != 'Number') {
-           throw TypeError('Incorrect invocation');
-         }
-         return +value;
-       };
+       var RangeError$5 = global$9.RangeError;
 
        // `String.prototype.repeat` method implementation
        // https://tc39.es/ecma262/#sec-string.prototype.repeat
        var stringRepeat = function repeat(count) {
-         var str = String(requireObjectCoercible(this));
+         var str = toString$7(requireObjectCoercible$6(this));
          var result = '';
-         var n = toInteger(count);
-         if (n < 0 || n == Infinity) throw RangeError('Wrong number of repetitions');
+         var n = toIntegerOrInfinity$1(count);
+         if (n < 0 || n == Infinity) throw RangeError$5('Wrong number of repetitions');
          for (;n > 0; (n >>>= 1) && (str += str)) if (n & 1) result += str;
          return result;
        };
 
-       var nativeToFixed = 1.0.toFixed;
-       var floor = Math.floor;
+       var $$q = _export;
+       var global$8 = global$1o;
+       var uncurryThis$a = functionUncurryThis;
+       var toIntegerOrInfinity = toIntegerOrInfinity$b;
+       var thisNumberValue$1 = thisNumberValue$3;
+       var $repeat$1 = stringRepeat;
+       var fails$7 = fails$V;
+
+       var RangeError$4 = global$8.RangeError;
+       var String$1 = global$8.String;
+       var floor$2 = Math.floor;
+       var repeat$2 = uncurryThis$a($repeat$1);
+       var stringSlice$3 = uncurryThis$a(''.slice);
+       var un$ToFixed = uncurryThis$a(1.0.toFixed);
 
-       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 pow$1 = function (x, n, acc) {
+         return n === 0 ? acc : n % 2 === 1 ? pow$1(x, n - 1, acc * x) : pow$1(x * x, n / 2, acc);
        };
 
        var log = function (x) {
          while (++index < 6) {
            c2 += n * data[index];
            data[index] = c2 % 1e7;
-           c2 = floor(c2 / 1e7);
+           c2 = floor$2(c2 / 1e7);
          }
        };
 
          var c = 0;
          while (--index >= 0) {
            c += data[index];
-           data[index] = floor(c / n);
+           data[index] = floor$2(c / n);
            c = (c % n) * 1e7;
          }
        };
          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;
+             var t = String$1(data[index]);
+             s = s === '' ? t : s + repeat$2('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(function () {
+       var FORCED$6 = fails$7(function () {
+         return un$ToFixed(0.00008, 3) !== '0.000' ||
+           un$ToFixed(0.9, 0) !== '1' ||
+           un$ToFixed(1.255, 2) !== '1.25' ||
+           un$ToFixed(1000000000000000128.0, 0) !== '1000000000000000128';
+       }) || !fails$7(function () {
          // V8 ~ Android 4.3-
-         nativeToFixed.call({});
+         un$ToFixed({});
        });
 
        // `Number.prototype.toFixed` method
        // https://tc39.es/ecma262/#sec-number.prototype.tofixed
-       _export({ target: 'Number', proto: true, forced: FORCED$4 }, {
+       $$q({ target: 'Number', proto: true, forced: FORCED$6 }, {
          toFixed: function toFixed(fractionDigits) {
-           var number = thisNumberValue(this);
-           var fractDigits = toInteger(fractionDigits);
+           var number = thisNumberValue$1(this);
+           var fractDigits = toIntegerOrInfinity(fractionDigits);
            var data = [0, 0, 0, 0, 0, 0];
            var sign = '';
            var result = '0';
            var e, z, j, k;
 
-           if (fractDigits < 0 || fractDigits > 20) throw RangeError('Incorrect fraction digits');
+           // TODO: ES2018 increased the maximum number of fraction digits to 100, need to improve the implementation
+           if (fractDigits < 0 || fractDigits > 20) throw RangeError$4('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 <= -1e21 || number >= 1e21) return String$1(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);
+             e = log(number * pow$1(2, 69, 1)) - 69;
+             z = e < 0 ? number * pow$1(2, -e, 1) : number / pow$1(2, e, 1);
              z *= 0x10000000000000;
              e = 52 - e;
              if (e > 0) {
                  multiply(data, 1e7, 0);
                  j -= 7;
                }
-               multiply(data, pow(10, j, 1), 0);
+               multiply(data, pow$1(10, j, 1), 0);
                j = e - 1;
                while (j >= 23) {
                  divide(data, 1 << 23);
              } else {
                multiply(data, 0, z);
                multiply(data, 1 << -e, 0);
-               result = dataToString(data) + stringRepeat.call('0', fractDigits);
+               result = dataToString(data) + repeat$2('0', fractDigits);
              }
            }
            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));
+               ? '0.' + repeat$2('0', fractDigits - k) + result
+               : stringSlice$3(result, 0, k - fractDigits) + '.' + stringSlice$3(result, k - fractDigits));
            } else {
              result = sign + result;
            } return result;
          }
        });
 
-       var globalIsFinite = global$2.isFinite;
+       var global$7 = global$1o;
+
+       var globalIsFinite = global$7.isFinite;
 
        // `Number.isFinite` method
        // https://tc39.es/ecma262/#sec-number.isfinite
        // eslint-disable-next-line es/no-number-isfinite -- safe
-       var numberIsFinite = Number.isFinite || function isFinite(it) {
+       var numberIsFinite$1 = Number.isFinite || function isFinite(it) {
          return typeof it == 'number' && globalIsFinite(it);
        };
 
+       var $$p = _export;
+       var numberIsFinite = numberIsFinite$1;
+
        // `Number.isFinite` method
        // https://tc39.es/ecma262/#sec-number.isfinite
-       _export({ target: 'Number', stat: true }, { isFinite: numberIsFinite });
+       $$p({ target: 'Number', stat: true }, { isFinite: numberIsFinite });
 
-       var fromCharCode = String.fromCharCode;
+       var $$o = _export;
+       var global$6 = global$1o;
+       var uncurryThis$9 = functionUncurryThis;
+       var toAbsoluteIndex = toAbsoluteIndex$9;
+
+       var RangeError$3 = global$6.RangeError;
+       var fromCharCode$1 = String.fromCharCode;
        // eslint-disable-next-line es/no-string-fromcodepoint -- required for testing
        var $fromCodePoint = String.fromCodePoint;
+       var join$2 = uncurryThis$9([].join);
 
        // length should be 1, old FF problem
        var INCORRECT_LENGTH = !!$fromCodePoint && $fromCodePoint.length != 1;
 
        // `String.fromCodePoint` method
        // https://tc39.es/ecma262/#sec-string.fromcodepoint
-       _export({ target: 'String', stat: true, forced: INCORRECT_LENGTH }, {
+       $$o({ target: 'String', stat: true, forced: INCORRECT_LENGTH }, {
          // eslint-disable-next-line no-unused-vars -- required for `.length`
          fromCodePoint: function fromCodePoint(x) {
            var elements = [];
            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 (toAbsoluteIndex(code, 0x10FFFF) !== code) throw RangeError$3(code + ' is not a valid code point');
+             elements[i] = code < 0x10000
+               ? fromCharCode$1(code)
+               : fromCharCode$1(((code -= 0x10000) >> 10) + 0xD800, code % 0x400 + 0xDC00);
+           } return join$2(elements, '');
          }
        });
 
+       var call$1 = functionCall;
+       var fixRegExpWellKnownSymbolLogic = fixRegexpWellKnownSymbolLogic;
+       var anObject = anObject$n;
+       var requireObjectCoercible$5 = requireObjectCoercible$e;
+       var sameValue = sameValue$1;
+       var toString$6 = toString$k;
+       var getMethod = getMethod$7;
+       var regExpExec = regexpExecAbstract;
+
        // @@search logic
-       fixRegexpWellKnownSymbolLogic('search', function (SEARCH, nativeSearch, maybeCallNative) {
+       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(this);
-             var searcher = regexp == undefined ? undefined : regexp[SEARCH];
-             return searcher !== undefined ? searcher.call(regexp, O) : new RegExp(regexp)[SEARCH](String(O));
+             var O = requireObjectCoercible$5(this);
+             var searcher = regexp == undefined ? undefined : getMethod(regexp, SEARCH);
+             return searcher ? call$1(searcher, regexp, O) : new RegExp(regexp)[SEARCH](toString$6(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;
-
              var rx = anObject(this);
-             var S = String(string);
+             var S = toString$6(string);
+             var res = maybeCallNative(nativeSearch, rx, S);
+
+             if (res.done) return res.value;
 
              var previousLastIndex = rx.lastIndex;
              if (!sameValue(previousLastIndex, 0)) rx.lastIndex = 0;
-             var result = regexpExecAbstract(rx, S);
+             var result = regExpExec(rx, S);
              if (!sameValue(rx.lastIndex, previousLastIndex)) rx.lastIndex = previousLastIndex;
              return result === null ? -1 : result.index;
            }
          ];
        });
 
-       var quickselect$1 = createCommonjsModule(function (module, exports) {
+       var rbush$2 = {exports: {}};
+
+       var quickselect$2 = {exports: {}};
+
+       (function (module, exports) {
          (function (global, factory) {
            module.exports = factory() ;
          })(commonjsGlobal, function () {
 
            return quickselect;
          });
-       });
+       })(quickselect$2);
 
-       var rbush_1 = rbush;
-       var _default$1 = rbush;
+       rbush$2.exports = rbush$1;
 
-       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
+       rbush$2.exports["default"] = rbush$1;
+
+       var quickselect$1 = quickselect$2.exports;
+
+       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
 
          this._maxEntries = Math.max(4, maxEntries || 9);
          this._minEntries = Math.max(2, Math.ceil(this._maxEntries * 0.4));
          this.clear();
        }
 
-       rbush.prototype = {
+       rbush$1.prototype = {
          all: function all() {
            return this._all(this.data, []);
          },
            stack.push(left, mid, mid, right);
          }
        }
-       rbush_1["default"] = _default$1;
 
-       var lineclip_1 = lineclip$1;
-       lineclip$1.polyline = lineclip$1;
-       lineclip$1.polygon = polygonclip$1; // Cohen-Sutherland line clippign algorithm, adapted to efficiently
+       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
 
-       function lineclip$1(points, bbox, result) {
+       function lineclip$2(points, bbox, result) {
          var len = points.length,
              codeA = bitCode$1(points[0], bbox),
              part = [],
          return code;
        }
 
+       var rbush = rbush$2.exports;
+       var lineclip$1 = lineclip_1;
        var whichPolygon_1 = whichPolygon;
 
        function whichPolygon(data) {
            }
          }
 
-         var tree = rbush_1().load(bboxes);
+         var tree = rbush().load(bboxes);
 
          function query(p, multi) {
            var output = [],
          if (insidePolygon(polygon, bboxCenter)) return true;
 
          for (var i = 0; i < polygon.length; i++) {
-           if (lineclip_1(polygon[i], bbox).length > 0) return true;
+           if (lineclip$1(polygon[i], bbox).length > 0) return true;
          }
 
          return false;
          return feature2 && feature2.properties.roadSpeedUnit || null;
        }
 
-       var RADIUS = 6378137;
-       var FLATTENING = 1 / 298.257223563;
-       var POLAR_RADIUS = 6356752.3142;
-       var wgs84 = {
-         RADIUS: RADIUS,
-         FLATTENING: FLATTENING,
-         POLAR_RADIUS: POLAR_RADIUS
-       };
+       function roadHeightUnit(query) {
+         var feature2 = smallestOrMatchingFeature(query);
+         return feature2 && feature2.properties.roadHeightUnit || null;
+       }
+
+       var geojsonArea = {};
+
+       var wgs84$1 = {};
+
+       wgs84$1.RADIUS = 6378137;
+       wgs84$1.FLATTENING = 1 / 298.257223563;
+       wgs84$1.POLAR_RADIUS = 6356752.3142;
 
-       var geometry_1 = geometry;
-       var ring = ringArea;
+       var wgs84 = wgs84$1;
+       geojsonArea.geometry = geometry;
+       geojsonArea.ring = ringArea;
 
        function geometry(_) {
          var area = 0,
          return _ * Math.PI / 180;
        }
 
-       var geojsonArea = {
-         geometry: geometry_1,
-         ring: ring
-       };
+       var inputValidation = {};
 
+       var $$n = _export;
        var $includes = arrayIncludes.includes;
-
+       var addToUnscopables$2 = addToUnscopables$6;
 
        // `Array.prototype.includes` method
        // https://tc39.es/ecma262/#sec-array.prototype.includes
-       _export({ target: 'Array', proto: true }, {
+       $$n({ target: 'Array', proto: true }, {
          includes: function includes(el /* , fromIndex = 0 */) {
            return $includes(this, el, arguments.length > 1 ? arguments[1] : undefined);
          }
        });
 
        // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables('includes');
+       addToUnscopables$2('includes');
 
-       var validateCenter_1$1 = function validateCenter(center) {
+       var validateCenter$1 = {};
+
+       validateCenter$1.validateCenter = function validateCenter(center) {
          var validCenterLengths = [2, 3];
 
          if (!Array.isArray(center) || !validCenterLengths.includes(center.length)) {
          }
        };
 
-       var validateCenter$1 = {
-         validateCenter: validateCenter_1$1
-       };
+       var validateRadius$1 = {};
 
-       var validateRadius_1$1 = function validateRadius(radius) {
+       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)));
          }
          }
        };
 
-       var validateRadius$1 = {
-         validateRadius: validateRadius_1$1
-       };
+       var validateNumberOfEdges$1 = {};
 
-       var validateNumberOfEdges_1$1 = function validateNumberOfEdges(numberOfEdges) {
+       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));
          }
        };
 
-       var validateNumberOfEdges$1 = {
-         validateNumberOfEdges: validateNumberOfEdges_1$1
-       };
+       var validateEarthRadius$1 = {};
 
-       var validateEarthRadius_1$1 = function validateEarthRadius(earthRadius) {
+       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 validateEarthRadius$1 = {
-         validateEarthRadius: validateEarthRadius_1$1
-       };
+       var validateBearing$1 = {};
 
-       var validateBearing_1$1 = function validateBearing(bearing) {
+       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 validateBearing$1 = {
-         validateBearing: validateBearing_1$1
-       };
-
        var validateCenter = validateCenter$1.validateCenter;
        var validateRadius = validateRadius$1.validateRadius;
        var validateNumberOfEdges = validateNumberOfEdges$1.validateNumberOfEdges;
          validateBearing(bearing);
        }
 
-       var validateCenter_1 = validateCenter;
-       var validateRadius_1 = validateRadius;
-       var validateNumberOfEdges_1 = validateNumberOfEdges;
-       var validateEarthRadius_1 = validateEarthRadius;
-       var validateBearing_1 = validateBearing;
-       var validateInput_1 = validateInput$1;
-       var inputValidation = {
-         validateCenter: validateCenter_1,
-         validateRadius: validateRadius_1,
-         validateNumberOfEdges: validateNumberOfEdges_1,
-         validateEarthRadius: validateEarthRadius_1,
-         validateBearing: validateBearing_1,
-         validateInput: validateInput_1
-       };
+       inputValidation.validateCenter = validateCenter;
+       inputValidation.validateRadius = validateRadius;
+       inputValidation.validateNumberOfEdges = validateNumberOfEdges;
+       inputValidation.validateEarthRadius = validateEarthRadius;
+       inputValidation.validateBearing = validateBearing;
+       inputValidation.validateInput = validateInput$1;
 
        var validateInput = inputValidation.validateInput;
        var defaultEarthRadius = 6378137; // equatorial Earth radius
          return argument === null || argument === undefined;
        }
 
+       var $$m = _export;
+
        // `Number.EPSILON` constant
        // https://tc39.es/ecma262/#sec-number.epsilon
-       _export({ target: 'Number', stat: true }, {
+       $$m({ target: 'Number', stat: true }, {
          EPSILON: Math.pow(2, -52)
        });
 
+       var uncurryThis$8 = functionUncurryThis;
+       var requireObjectCoercible$4 = requireObjectCoercible$e;
+       var toString$5 = toString$k;
+
        var quot = /"/g;
+       var replace$2 = uncurryThis$8(''.replace);
 
        // `CreateHTML` abstract operation
        // https://tc39.es/ecma262/#sec-createhtml
        var createHtml = function (string, tag, attribute, value) {
-         var S = String(requireObjectCoercible(string));
+         var S = toString$5(requireObjectCoercible$4(string));
          var p1 = '<' + tag;
-         if (attribute !== '') p1 += ' ' + attribute + '="' + String(value).replace(quot, '&quot;') + '"';
+         if (attribute !== '') p1 += ' ' + attribute + '="' + replace$2(toString$5(value), quot, '&quot;') + '"';
          return p1 + '>' + S + '</' + tag + '>';
        };
 
+       var fails$6 = fails$V;
+
        // check the existence of a method, lowercase
        // of a tag and escaping quotes in arguments
        var stringHtmlForced = function (METHOD_NAME) {
-         return fails(function () {
+         return fails$6(function () {
            var test = ''[METHOD_NAME]('"');
            return test !== test.toLowerCase() || test.split('"').length > 3;
          });
        };
 
+       var $$l = _export;
+       var createHTML = createHtml;
+       var forcedStringHTMLMethod = stringHtmlForced;
+
        // `String.prototype.link` method
        // https://tc39.es/ecma262/#sec-string.prototype.link
-       _export({ target: 'String', proto: true, forced: stringHtmlForced('link') }, {
+       $$l({ target: 'String', proto: true, forced: forcedStringHTMLMethod('link') }, {
          link: function link(url) {
-           return createHtml(this, 'a', 'href', url);
+           return createHTML(this, 'a', 'href', url);
          }
        });
 
          return node;
        }
 
-       function split(key, v, comparator) {
+       function split$2(key, v, comparator) {
          var left = null;
          var right = null;
 
          Tree.prototype.update = function (key, newKey, newData) {
            var comparator = this._comparator;
 
-           var _a = split(key, this._root, comparator),
+           var _a = split$2(key, this._root, comparator),
                left = _a.left,
                right = _a.right;
 
          };
 
          Tree.prototype.split = function (key) {
-           return split(key, this._root, this._comparator);
+           return split$2(key, this._root, this._comparator);
          };
 
          return Tree;
          difference: difference
        };
 
-       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);
-                 }
-               });
-             }
+       var geojsonPrecision = {exports: {}};
 
-             function multi(l) {
-               return l.map(point);
-             }
+       (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);
+               }
+             });
+           }
 
-             function poly(p) {
-               return p.map(multi);
-             }
+           function multi(l) {
+             return l.map(point);
+           }
 
-             function multiPoly(m) {
-               return m.map(poly);
-             }
+           function poly(p) {
+             return p.map(multi);
+           }
 
-             function geometry(obj) {
-               if (!obj) {
-                 return {};
-               }
+           function multiPoly(m) {
+             return m.map(poly);
+           }
 
-               switch (obj.type) {
-                 case "Point":
-                   obj.coordinates = point(obj.coordinates);
-                   return obj;
+           function geometry(obj) {
+             if (!obj) {
+               return {};
+             }
 
-                 case "LineString":
-                 case "MultiPoint":
-                   obj.coordinates = multi(obj.coordinates);
-                   return obj;
+             switch (obj.type) {
+               case "Point":
+                 obj.coordinates = point(obj.coordinates);
+                 return obj;
 
-                 case "Polygon":
-                 case "MultiLineString":
-                   obj.coordinates = poly(obj.coordinates);
-                   return obj;
+               case "LineString":
+               case "MultiPoint":
+                 obj.coordinates = multi(obj.coordinates);
+                 return obj;
 
-                 case "MultiPolygon":
-                   obj.coordinates = multiPoly(obj.coordinates);
-                   return obj;
+               case "Polygon":
+               case "MultiLineString":
+                 obj.coordinates = poly(obj.coordinates);
+                 return obj;
 
-                 case "GeometryCollection":
-                   obj.geometries = obj.geometries.map(geometry);
-                   return obj;
+               case "MultiPolygon":
+                 obj.coordinates = multiPoly(obj.coordinates);
+                 return obj;
 
-                 default:
-                   return {};
-               }
-             }
+               case "GeometryCollection":
+                 obj.geometries = obj.geometries.map(geometry);
+                 return obj;
 
-             function feature(obj) {
-               obj.geometry = geometry(obj.geometry);
-               return obj;
+               default:
+                 return {};
              }
+           }
 
-             function featureCollection(f) {
-               f.features = f.features.map(feature);
-               return f;
-             }
+           function feature(obj) {
+             obj.geometry = geometry(obj.geometry);
+             return obj;
+           }
 
-             function geometryCollection(g) {
-               g.geometries = g.geometries.map(geometry);
-               return g;
-             }
+           function featureCollection(f) {
+             f.features = f.features.map(feature);
+             return f;
+           }
 
-             if (!t) {
-               return t;
-             }
+           function geometryCollection(g) {
+             g.geometries = g.geometries.map(geometry);
+             return g;
+           }
 
-             switch (t.type) {
-               case "Feature":
-                 return feature(t);
+           if (!t) {
+             return t;
+           }
 
-               case "GeometryCollection":
-                 return geometryCollection(t);
+           switch (t.type) {
+             case "Feature":
+               return feature(t);
 
-               case "FeatureCollection":
-                 return featureCollection(t);
+             case "GeometryCollection":
+               return geometryCollection(t);
 
-               case "Point":
-               case "LineString":
-               case "Polygon":
-               case "MultiPoint":
-               case "MultiPolygon":
-               case "MultiLineString":
-                 return geometry(t);
+             case "FeatureCollection":
+               return featureCollection(t);
 
-               default:
-                 return t;
-             }
+             case "Point":
+             case "LineString":
+             case "Polygon":
+             case "MultiPoint":
+             case "MultiPolygon":
+             case "MultiLineString":
+               return geometry(t);
+
+             default:
+               return t;
            }
+         }
 
-           module.exports = parse;
-           module.exports.parse = parse;
-         })();
-       });
+         geojsonPrecision.exports = parse;
+         geojsonPrecision.exports.parse = parse;
+       })();
+
+       var precision = geojsonPrecision.exports;
 
-       var FORCED$3 = fails(function () {
+       var $$k = _export;
+       var fails$5 = fails$V;
+       var toObject$1 = toObject$i;
+       var toPrimitive = toPrimitive$3;
+
+       var FORCED$5 = fails$5(function () {
          return new Date(NaN).toJSON() !== null
            || Date.prototype.toJSON.call({ toISOString: function () { return 1; } }) !== 1;
        });
 
        // `Date.prototype.toJSON` method
        // https://tc39.es/ecma262/#sec-date.prototype.tojson
-       _export({ target: 'Date', proto: true, forced: FORCED$3 }, {
+       $$k({ target: 'Date', proto: true, forced: FORCED$5 }, {
          // eslint-disable-next-line no-unused-vars -- required for `.length`
          toJSON: function toJSON(key) {
-           var O = toObject(this);
-           var pv = toPrimitive(O);
+           var O = toObject$1(this);
+           var pv = toPrimitive(O, 'number');
            return typeof pv == 'number' && !isFinite(pv) ? null : O.toISOString();
          }
        });
 
+       var $$j = _export;
+       var call = functionCall;
+
        // `URL.prototype.toJSON` method
        // https://url.spec.whatwg.org/#dom-url-tojson
-       _export({ target: 'URL', proto: true, enumerable: true }, {
+       $$j({ target: 'URL', proto: true, enumerable: true }, {
          toJSON: function toJSON() {
-           return URL.prototype.toString.call(this);
+           return call(URL.prototype.toString, this);
          }
        });
 
                var EDGES = 10;
                var PRECISION = 3;
                var area = Math.PI * radius * radius;
-               var feature = this._cache[id] = geojsonPrecision({
+               var feature = this._cache[id] = precision({
                  type: 'Feature',
                  id: id,
                  properties: {
          return aRank > bRank ? 1 : aRank < bRank ? -1 : a.id.localeCompare(b.id);
        }
 
+       var $$i = _export;
+
        // `Number.MAX_SAFE_INTEGER` constant
        // https://tc39.es/ecma262/#sec-number.max_safe_integer
-       _export({ target: 'Number', stat: true }, {
+       $$i({ target: 'Number', stat: true }, {
          MAX_SAFE_INTEGER: 0x1FFFFFFFFFFFFF
        });
 
-       var aesJs = createCommonjsModule(function (module, exports) {
+       var aesJs = {exports: {}};
+
+       (function (module, exports) {
          (function (root) {
 
            function checkInt(value) {
              // https://github.com/amdjs/amdjs-api/wiki/AMD
            }
          })();
-       });
+       })(aesJs);
+
+       var aesjs = aesJs.exports;
 
        // 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));
        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 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);
+         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 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);
+         var text = aesjs.utils.utf8.fromBytes(decryptedBytes);
          return text;
        }
 
 
        // Like selection.property('value', ...), but avoids no-op value sets,
        // which can result in layout/repaint thrashing in some situations.
+
+       /** @returns {string} */
        function utilGetSetValue(selection, value) {
          function d3_selection_value(value) {
            function valueNull() {
          return _this;
        }
 
+       var $$h = _export;
        var $findIndex = arrayIteration.findIndex;
-
+       var addToUnscopables$1 = addToUnscopables$6;
 
        var FIND_INDEX = 'findIndex';
        var SKIPS_HOLES = true;
 
        // `Array.prototype.findIndex` method
        // https://tc39.es/ecma262/#sec-array.prototype.findindex
-       _export({ target: 'Array', proto: true, forced: SKIPS_HOLES }, {
+       $$h({ target: 'Array', proto: true, forced: SKIPS_HOLES }, {
          findIndex: function findIndex(callbackfn /* , that = undefined */) {
            return $findIndex(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
          }
        });
 
        // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
-       addToUnscopables(FIND_INDEX);
+       addToUnscopables$1(FIND_INDEX);
+
+       var global$5 = global$1o;
+       var isRegExp = isRegexp;
+
+       var TypeError$3 = global$5.TypeError;
 
        var notARegexp = function (it) {
-         if (isRegexp(it)) {
-           throw TypeError("The method doesn't accept regular expressions");
+         if (isRegExp(it)) {
+           throw TypeError$3("The method doesn't accept regular expressions");
          } return it;
        };
 
+       var wellKnownSymbol = wellKnownSymbol$t;
+
        var MATCH = wellKnownSymbol('match');
 
        var correctIsRegexpLogic = function (METHOD_NAME) {
          } return false;
        };
 
+       var $$g = _export;
+       var uncurryThis$7 = functionUncurryThis;
+       var notARegExp$2 = notARegexp;
+       var requireObjectCoercible$3 = requireObjectCoercible$e;
+       var toString$4 = toString$k;
+       var correctIsRegExpLogic$2 = correctIsRegexpLogic;
+
+       var stringIndexOf = uncurryThis$7(''.indexOf);
+
        // `String.prototype.includes` method
        // https://tc39.es/ecma262/#sec-string.prototype.includes
-       _export({ target: 'String', proto: true, forced: !correctIsRegexpLogic('includes') }, {
+       $$g({ target: 'String', proto: true, forced: !correctIsRegExpLogic$2('includes') }, {
          includes: function includes(searchString /* , position = 0 */) {
-           return !!~String(requireObjectCoercible(this))
-             .indexOf(notARegexp(searchString), arguments.length > 1 ? arguments[1] : undefined);
+           return !!~stringIndexOf(
+             toString$4(requireObjectCoercible$3(this)),
+             toString$4(notARegExp$2(searchString)),
+             arguments.length > 1 ? arguments[1] : undefined
+           );
          }
        });
 
-       var _mainLocalizer = coreLocalizer(); // singleton
+       /** Detect free variable `global` from Node.js. */
+       var freeGlobal = (typeof global === "undefined" ? "undefined" : _typeof(global)) == 'object' && global && global.Object === Object && global;
 
+       /** Detect free variable `self`. */
 
-       var _t = _mainLocalizer.t;
-       // coreLocalizer manages language and locale parameters including translated strings
-       //
+       var freeSelf = (typeof self === "undefined" ? "undefined" : _typeof(self)) == 'object' && self && self.Object === Object && self;
+       /** Used as a reference to the global object. */
 
-       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 root = freeGlobal || freeSelf || Function('return this')();
 
-         var _dataLocales = {}; // `localeStrings` is an object containing all _loaded_ locale codes -> string data.
-         // {
-         // en: { icons: {…}, toolbar: {…}, modes: {…}, operations: {…}, … },
-         // de: { icons: {…}, toolbar: {…}, modes: {…}, operations: {…}, … },
-         // …
-         // }
+       /** Built-in value references. */
 
-         var _localeStrings = {}; // the current locale
+       var _Symbol = root.Symbol;
 
-         var _localeCode = 'en-US'; // `_localeCodes` must contain `_localeCode` first, optionally followed by fallbacks
+       /** Used for built-in method references. */
 
-         var _localeCodes = ['en-US', 'en'];
-         var _languageCode = 'en';
-         var _textDirection = 'ltr';
-         var _usesMetric = false;
-         var _languageNames = {};
-         var _scriptNames = {}; // getters for the current locale parameters
+       var objectProto$1 = Object.prototype;
+       /** Used to check objects for own properties. */
 
-         localizer.localeCode = function () {
-           return _localeCode;
-         };
+       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.
+        */
 
-         localizer.localeCodes = function () {
-           return _localeCodes;
-         };
+       var nativeObjectToString$1 = objectProto$1.toString;
+       /** Built-in value references. */
 
-         localizer.languageCode = function () {
-           return _languageCode;
-         };
+       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`.
+        */
 
-         localizer.textDirection = function () {
-           return _textDirection;
-         };
+       function getRawTag(value) {
+         var isOwn = hasOwnProperty$2.call(value, symToStringTag$1),
+             tag = value[symToStringTag$1];
 
-         localizer.usesMetric = function () {
-           return _usesMetric;
-         };
+         try {
+           value[symToStringTag$1] = undefined;
+           var unmasked = true;
+         } catch (e) {}
 
-         localizer.languageNames = function () {
-           return _languageNames;
-         };
+         var result = nativeObjectToString$1.call(value);
 
-         localizer.scriptNames = function () {
-           return _scriptNames;
-         }; // The client app may want to manually set the locale, regardless of the
-         // settings provided by the browser
+         if (unmasked) {
+           if (isOwn) {
+             value[symToStringTag$1] = tag;
+           } else {
+             delete value[symToStringTag$1];
+           }
+         }
 
+         return result;
+       }
 
-         var _preferredLocaleCodes = [];
+       /** 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.
+        */
 
-         localizer.preferredLocaleCodes = function (codes) {
-           if (!arguments.length) return _preferredLocaleCodes;
+       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.
+        */
 
-           if (typeof codes === 'string') {
-             // be generous and accept delimited strings as input
-             _preferredLocaleCodes = codes.split(/,|;| /gi).filter(Boolean);
-           } else {
-             _preferredLocaleCodes = codes;
-           }
+       function objectToString(value) {
+         return nativeObjectToString.call(value);
+       }
 
-           return localizer;
-         };
+       /** `Object#toString` result references. */
 
-         var _loadPromise;
+       var nullTag = '[object Null]',
+           undefinedTag = '[object Undefined]';
+       /** Built-in value references. */
 
-         localizer.ensureLoaded = function () {
-           if (_loadPromise) return _loadPromise;
-           var filesToFetch = [// load the list of languages
-           'languages', // load the list of supported locales
-           'locales'];
-           var localeDirs = {
-             general: 'locales',
-             tagging: 'https://cdn.jsdelivr.net/npm/@openstreetmap/id-tagging-schema@3/dist/translations'
-           };
-           var fileMap = _mainFileFetcher.fileMap();
+       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`.
+        */
 
-           for (var scopeId in localeDirs) {
-             var key = "locales_index_".concat(scopeId);
-             fileMap[key] = localeDirs[scopeId] + '/index.min.json';
-             filesToFetch.push(key);
-           }
+       function baseGetTag(value) {
+         if (value == null) {
+           return value === undefined ? undefinedTag : nullTag;
+         }
 
-           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);
+         return symToStringTag && symToStringTag in Object(value) ? getRawTag(value) : objectToString(value);
+       }
 
-             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']);
+       /**
+        * 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';
+       }
 
-             _localeCodes = localesToUseFrom(requestedLocales); // Run iD in the highest-priority locale; the rest are fallbacks
+       /** `Object#toString` result references. */
 
-             _localeCode = _localeCodes[0];
-             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
+       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
+        */
 
+       function isSymbol(value) {
+         return _typeof(value) == 'symbol' || isObjectLike(value) && baseGetTag(value) == symbolTag;
+       }
 
-               _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
+       /**
+        * A specialized version of `_.map` for arrays without support for iteratee
+        * shorthands.
+        *
+        * @private
+        * @param {Array} [array] The array to iterate over.
+        * @param {Function} iteratee The function invoked per iteration.
+        * @returns {Array} Returns the new mapped array.
+        */
+       function arrayMap(array, iteratee) {
+         var index = -1,
+             length = array == null ? 0 : array.length,
+             result = Array(length);
 
+         while (++index < length) {
+           result[index] = iteratee(array[index], index, array);
+         }
 
-         function localesToUseFrom(requestedLocales) {
-           var supportedLocales = _dataLocales;
-           var toUse = [];
+         return result;
+       }
 
-           for (var i in requestedLocales) {
-             var locale = requestedLocales[i];
-             if (supportedLocales[locale]) toUse.push(locale);
+       /**
+        * Checks if `value` is classified as an `Array` object.
+        *
+        * @static
+        * @memberOf _
+        * @since 0.1.0
+        * @category Lang
+        * @param {*} value The value to check.
+        * @returns {boolean} Returns `true` if `value` is an array, else `false`.
+        * @example
+        *
+        * _.isArray([1, 2, 3]);
+        * // => true
+        *
+        * _.isArray(document.body.children);
+        * // => false
+        *
+        * _.isArray('abc');
+        * // => false
+        *
+        * _.isArray(_.noop);
+        * // => false
+        */
+       var isArray$1 = Array.isArray;
 
-             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
+       /** Used as references for various `Number` constants. */
 
+       var INFINITY = 1 / 0;
+       /** Used to convert symbols to primitives and strings. */
 
-           return utilArrayUniq(toUse);
+       var symbolProto = _Symbol ? _Symbol.prototype : undefined,
+           symbolToString = symbolProto ? symbolProto.toString : undefined;
+       /**
+        * The base implementation of `_.toString` which doesn't convert nullish
+        * values to empty strings.
+        *
+        * @private
+        * @param {*} value The value to process.
+        * @returns {string} Returns the string.
+        */
+
+       function baseToString(value) {
+         // Exit early for strings to avoid a performance hit in some environments.
+         if (typeof value == 'string') {
+           return value;
          }
 
-         function updateForCurrentLocale() {
-           if (!_localeCode) return;
-           _languageCode = _localeCode.split('-')[0];
-           var currentData = _dataLocales[_localeCode] || _dataLocales[_languageCode];
-           var hash = utilStringQs(window.location.hash);
+         if (isArray$1(value)) {
+           // Recursively convert values (susceptible to call stack limits).
+           return arrayMap(value, baseToString) + '';
+         }
 
-           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.general[locale].languageNames;
-           _scriptNames = _localeStrings.general[locale].scriptNames;
-           _usesMetric = _localeCode.slice(-3).toLowerCase() !== '-us';
+         if (isSymbol(value)) {
+           return symbolToString ? symbolToString.call(value) : '';
          }
-         /* Locales */
-         // Returns a Promise to load the strings for the requested locale
 
+         var result = value + '';
+         return result == '0' && 1 / value == -INFINITY ? '-0' : result;
+       }
 
-         localizer.loadLocale = function (locale, scopeId, directory) {
-           // US English is the default
-           if (locale.toLowerCase() === 'en-us') locale = 'en';
+       /** 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 (_localeStrings[scopeId] && _localeStrings[scopeId][locale]) {
-             // already loaded
-             return Promise.resolve(locale);
-           }
+       function trimmedEndIndex(string) {
+         var index = string.length;
 
-           var fileMap = _mainFileFetcher.fileMap();
-           var key = "locale_".concat(scopeId, "_").concat(locale);
-           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;
-           });
-         };
+         while (index-- && reWhitespace.test(string.charAt(index))) {}
 
-         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`
+         return index;
+       }
 
+       /** Used to match leading whitespace. */
 
-         function pluralRule(number, localeCode) {
-           // modern browsers have this functionality built-in
-           var rules = 'Intl' in window && Intl.PluralRules && new Intl.PluralRules(localeCode);
+       var reTrimStart = /^\s+/;
+       /**
+        * The base implementation of `_.trim`.
+        *
+        * @private
+        * @param {string} string The string to trim.
+        * @returns {string} Returns the trimmed string.
+        */
 
-           if (rules) {
-             return rules.select(number);
-           } // fallback to basic one/other, as in English
+       function baseTrim(string) {
+         return string ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '') : string;
+       }
 
+       /**
+        * 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);
 
-           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 value != null && (type == 'object' || type == 'function');
+       }
 
+       /** Used as references for various `Number` constants. */
 
-         localizer.tInfo = function (origStringId, replacements, locale) {
-           var stringId = origStringId.trim();
-           var scopeId = 'general';
+       var NAN = 0 / 0;
+       /** Used to detect bad signed hexadecimal string values. */
 
-           if (stringId[0] === '_') {
-             var split = stringId.split('.');
-             scopeId = split[0].slice(1);
-             stringId = split.slice(1).join('.');
-           }
+       var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
+       /** Used to detect binary string values. */
 
-           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 reIsBinary = /^0b[01]+$/i;
+       /** Used to detect octal string values. */
 
-           if (stringsKey.toLowerCase() === 'en-us') stringsKey = 'en';
-           var result = _localeStrings && _localeStrings[scopeId] && _localeStrings[scopeId][stringsKey];
+       var reIsOctal = /^0o[0-7]+$/i;
+       /** Built-in method references without a dependency on `root`. */
 
-           while (result !== undefined && path.length) {
-             result = result[path.pop()];
-           }
+       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 (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';
-                 });
+       function toNumber(value) {
+         if (typeof value == 'number') {
+           return value;
+         }
 
-                 if (number !== undefined) {
-                   var rule = pluralRule(number, locale);
+         if (isSymbol(value)) {
+           return NAN;
+         }
 
-                   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 (isObject$2(value)) {
+           var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
+           value = isObject$2(other) ? other + '' : other;
+         }
 
-               if (typeof result === 'string') {
-                 for (var key in replacements) {
-                   var value = replacements[key];
+         if (typeof value != 'string') {
+           return value === 0 ? value : +value;
+         }
 
-                   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();
-                     }
-                   }
+         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;
+       }
 
-                   var token = "{".concat(key, "}");
-                   var regex = new RegExp(token, 'g');
-                   result = result.replace(regex, value);
-                 }
-               }
-             }
+       /**
+        * Converts `value` to a string. An empty string is returned for `null`
+        * and `undefined` values. The sign of `-0` is preserved.
+        *
+        * @static
+        * @memberOf _
+        * @since 4.0.0
+        * @category Lang
+        * @param {*} value The value to convert.
+        * @returns {string} Returns the converted string.
+        * @example
+        *
+        * _.toString(null);
+        * // => ''
+        *
+        * _.toString(-0);
+        * // => '-0'
+        *
+        * _.toString([1, 2, 3]);
+        * // => '1,2,3'
+        */
 
-             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
+       function toString$3(value) {
+         return value == null ? '' : baseToString(value);
+       }
 
+       /**
+        * The base implementation of `_.propertyOf` without support for deep paths.
+        *
+        * @private
+        * @param {Object} object The object to query.
+        * @returns {Function} Returns the new accessor function.
+        */
+       function basePropertyOf(object) {
+         return function (key) {
+           return object == null ? undefined : object[key];
+         };
+       }
 
-           var index = _localeCodes.indexOf(locale);
+       /**
+        * 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.
+        */
 
-           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);
-           }
+       var now = function now() {
+         return root.Date.now();
+       };
 
-           if (replacements && 'default' in replacements) {
-             // Fallback to a default value if one is specified in `replacements`
-             return {
-               text: replacements["default"],
-               locale: null
-             };
-           }
+       /** Error message constants. */
 
-           var missing = "Missing ".concat(locale, " translation: ").concat(origStringId);
-           if (typeof console !== 'undefined') console.error(missing); // eslint-disable-line
+       var FUNC_ERROR_TEXT$1 = 'Expected a function';
+       /* Built-in method references for those with the same name as other `lodash` methods. */
 
-           return {
-             text: missing,
-             locale: 'en'
-           };
-         };
+       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);
+        */
 
-         localizer.hasTextForStringId = function (stringId) {
-           return !!localizer.tInfo(stringId, {
-             "default": 'nothing found'
-           }).locale;
-         }; // Returns only the localized text, discarding the locale info
+       function debounce(func, wait, options) {
+         var lastArgs,
+             lastThis,
+             maxWait,
+             result,
+             timerId,
+             lastCallTime,
+             lastInvokeTime = 0,
+             leading = false,
+             maxing = false,
+             trailing = true;
 
+         if (typeof func != 'function') {
+           throw new TypeError(FUNC_ERROR_TEXT$1);
+         }
 
-         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
+         wait = toNumber(wait) || 0;
 
+         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;
+         }
 
-         localizer.t.html = function (stringId, replacements, locale) {
-           var info = localizer.tInfo(stringId, replacements, locale); // text may be empty or undefined if `replacements.default` is
+         function invokeFunc(time) {
+           var args = lastArgs,
+               thisArg = lastThis;
+           lastArgs = lastThis = undefined;
+           lastInvokeTime = time;
+           result = func.apply(thisArg, args);
+           return result;
+         }
 
-           return info.text ? localizer.htmlForLocalizedText(info.text, info.locale) : '';
-         };
+         function leadingEdge(time) {
+           // Reset any `maxWait` timer.
+           lastInvokeTime = time; // Start the timer for the trailing edge.
 
-         localizer.htmlForLocalizedText = function (text, localeCode) {
-           return "<span class=\"localized-text\" lang=\"".concat(localeCode || 'unknown', "\">").concat(text, "</span>");
-         };
+           timerId = setTimeout(timerExpired, wait); // Invoke the leading edge.
 
-         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
+           return leading ? invokeFunc(time) : result;
+         }
 
+         function remainingWait(time) {
+           var timeSinceLastCall = time - lastCallTime,
+               timeSinceLastInvoke = time - lastInvokeTime,
+               timeWaiting = wait - timeSinceLastCall;
+           return maxing ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting;
+         }
 
-           if (options && options.localOnly) return null;
-           var langInfo = _dataLanguages[code];
+         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.
 
-           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
+           return lastCallTime === undefined || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;
+         }
 
-               if (_languageNames[base]) {
-                 // base language name in locale language
-                 var scriptCode = langInfo.script;
-                 var script = _scriptNames[scriptCode] || scriptCode; // e.g. "Serbian (Cyrillic)"
+         function timerExpired() {
+           var time = now();
 
-                 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
-                 });
-               }
-             }
-           }
+           if (shouldInvoke(time)) {
+             return trailingEdge(time);
+           } // Restart the timer.
 
-           return code; // if not found, use the code
-         };
 
-         return localizer;
-       }
+           timerId = setTimeout(timerExpired, remainingWait(time));
+         }
 
-       // `presetCollection` is a wrapper around an `Array` of presets `collection`,
-       // and decorated with some extra methods for searching and matching geometry
-       //
+         function trailingEdge(time) {
+           timerId = undefined; // Only invoke if we have `lastArgs` which means `func` has been
+           // debounced at least once.
 
-       function presetCollection(collection) {
-         var MAXRESULTS = 50;
-         var _this = {};
-         var _memo = {};
-         _this.collection = collection;
+           if (trailing && lastArgs) {
+             return invokeFunc(time);
+           }
 
-         _this.item = function (id) {
-           if (_memo[id]) return _memo[id];
+           lastArgs = lastThis = undefined;
+           return result;
+         }
 
-           var found = _this.collection.find(function (d) {
-             return d.id === id;
-           });
+         function cancel() {
+           if (timerId !== undefined) {
+             clearTimeout(timerId);
+           }
 
-           if (found) _memo[id] = found;
-           return found;
-         };
+           lastInvokeTime = 0;
+           lastArgs = lastCallTime = lastThis = timerId = undefined;
+         }
 
-         _this.index = function (id) {
-           return _this.collection.findIndex(function (d) {
-             return d.id === id;
-           });
-         };
+         function flush() {
+           return timerId === undefined ? result : trailingEdge(now());
+         }
 
-         _this.matchGeometry = function (geometry) {
-           return presetCollection(_this.collection.filter(function (d) {
-             return d.matchGeometry(geometry);
-           }));
-         };
+         function debounced() {
+           var time = now(),
+               isInvoking = shouldInvoke(time);
+           lastArgs = arguments;
+           lastThis = this;
+           lastCallTime = time;
 
-         _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, loc) {
-           if (!value) return _this; // don't remove diacritical characters since we're assuming the user is being intentional
-
-           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
+           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 leadingStrict(a) {
-             var index = a.indexOf(value);
-             return index === 0;
+           if (timerId === undefined) {
+             timerId = setTimeout(timerExpired, wait);
            }
 
-           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
+           return result;
+         }
 
-               if (value === aCompare) return -1;
-               if (value === bCompare) return 1; // priority for higher matchScore
+         debounced.cancel = cancel;
+         debounced.flush = flush;
+         return debounced;
+       }
 
-               var i = b.originalScore - a.originalScore;
-               if (i !== 0) return i; // priority if search string appears earlier in preset name
+       /** Used to map characters to HTML entities. */
 
-               i = aCompare.indexOf(value) - bCompare.indexOf(value);
-               if (i !== 0) return i; // priority for shorter preset names
+       var htmlEscapes = {
+         '&': '&amp;',
+         '<': '&lt;',
+         '>': '&gt;',
+         '"': '&quot;',
+         "'": '&#39;'
+       };
+       /**
+        * Used by `_.escape` to convert characters to HTML entities.
+        *
+        * @private
+        * @param {string} chr The matched character to escape.
+        * @returns {string} Returns the escaped character.
+        */
 
-               return aCompare.length - bCompare.length;
-             };
-           }
+       var escapeHtmlChar = basePropertyOf(htmlEscapes);
 
-           var pool = _this.collection;
+       /** Used to match HTML entities and HTML characters. */
 
-           if (Array.isArray(loc)) {
-             var validLocations = _mainLocations.locationsAt(loc);
-             pool = pool.filter(function (a) {
-               return !a.locationSetID || validLocations[a.locationSetID];
-             });
-           }
+       var reUnescapedHtml = /[&<>"']/g,
+           reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
+       /**
+        * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
+        * corresponding HTML entities.
+        *
+        * **Note:** No other characters are escaped. To escape additional
+        * characters use a third-party library like [_he_](https://mths.be/he).
+        *
+        * Though the ">" character is escaped for symmetry, characters like
+        * ">" and "/" don't need escaping in HTML and have no special meaning
+        * unless they're part of a tag or unquoted attribute value. See
+        * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
+        * (under "semi-related fun fact") for more details.
+        *
+        * When working with HTML you should always
+        * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
+        * XSS vectors.
+        *
+        * @static
+        * @since 0.1.0
+        * @memberOf _
+        * @category String
+        * @param {string} [string=''] The string to escape.
+        * @returns {string} Returns the escaped string.
+        * @example
+        *
+        * _.escape('fred, barney, & pebbles');
+        * // => 'fred, barney, &amp; pebbles'
+        */
 
-           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
+       function escape$4(string) {
+         string = toString$3(string);
+         return string && reHasUnescapedHtml.test(string) ? string.replace(reUnescapedHtml, escapeHtmlChar) : string;
+       }
 
-           var leadingNames = searchable.filter(function (a) {
-             return leading(a.searchName());
-           }).sort(sortPresets('searchName')); // matches value to preset suggestion name
+       /** Error message constants. */
 
-           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 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);
+        */
 
-           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
+       function throttle(func, wait, options) {
+         var leading = true,
+             trailing = true;
 
-           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
+         if (typeof func != 'function') {
+           throw new TypeError(FUNC_ERROR_TEXT);
+         }
 
-           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
+         if (isObject$2(options)) {
+           leading = 'leading' in options ? !!options.leading : leading;
+           trailing = 'trailing' in options ? !!options.trailing : trailing;
+         }
 
-           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 debounce(func, wait, {
+           'leading': leading,
+           'maxWait': wait,
+           'trailing': trailing
+         });
+       }
 
-           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);
+       var $$f = _export;
+       var lastIndexOf = arrayLastIndexOf;
 
-           if (geometry) {
-             if (typeof geometry === 'string') {
-               results.push(_this.fallback(geometry));
-             } else {
-               geometry.forEach(function (geom) {
-                 return results.push(_this.fallback(geom));
-               });
-             }
-           }
+       // `Array.prototype.lastIndexOf` method
+       // https://tc39.es/ecma262/#sec-array.prototype.lastindexof
+       // eslint-disable-next-line es/no-array-prototype-lastindexof -- required for testing
+       $$f({ target: 'Array', proto: true, forced: lastIndexOf !== [].lastIndexOf }, {
+         lastIndexOf: lastIndexOf
+       });
 
-           return presetCollection(utilArrayUniq(results));
-         };
+       /** Used to map HTML entities to characters. */
 
-         return _this;
-       }
+       var htmlUnescapes = {
+         '&amp;': '&',
+         '&lt;': '<',
+         '&gt;': '>',
+         '&quot;': '"',
+         '&#39;': "'"
+       };
+       /**
+        * Used by `_.unescape` to convert HTML entities to characters.
+        *
+        * @private
+        * @param {string} chr The matched character to unescape.
+        * @returns {string} Returns the unescaped character.
+        */
 
-       // `presetCategory` builds a `presetCollection` of member presets,
-       // decorated with some extra methods for searching and matching geometry
-       //
+       var unescapeHtmlChar = basePropertyOf(htmlUnescapes);
 
-       function presetCategory(categoryID, category, allPresets) {
-         var _this = Object.assign({}, category); // shallow copy
+       /** Used to match HTML entities and HTML characters. */
 
+       var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
+           reHasEscapedHtml = RegExp(reEscapedHtml.source);
+       /**
+        * The inverse of `_.escape`; this method converts the HTML entities
+        * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
+        * their corresponding characters.
+        *
+        * **Note:** No other HTML entities are unescaped. To unescape additional
+        * HTML entities use a third-party library like [_he_](https://mths.be/he).
+        *
+        * @static
+        * @memberOf _
+        * @since 0.6.0
+        * @category String
+        * @param {string} [string=''] The string to unescape.
+        * @returns {string} Returns the unescaped string.
+        * @example
+        *
+        * _.unescape('fred, barney, &amp; pebbles');
+        * // => 'fred, barney, & pebbles'
+        */
 
-         var _searchName; // cache
+       function unescape$3(string) {
+         string = toString$3(string);
+         return string && reHasEscapedHtml.test(string) ? string.replace(reEscapedHtml, unescapeHtmlChar) : string;
+       }
 
+       var global$4 = global$1o;
+       var isArray = isArray$8;
+       var lengthOfArrayLike$1 = lengthOfArrayLike$i;
+       var bind$3 = functionBindContext;
 
-         var _searchNameStripped; // cache
+       var TypeError$2 = global$4.TypeError;
 
+       // `FlattenIntoArray` abstract operation
+       // https://tc39.github.io/proposal-flatMap/#sec-FlattenIntoArray
+       var flattenIntoArray$1 = function (target, original, source, sourceLen, start, depth, mapper, thisArg) {
+         var targetIndex = start;
+         var sourceIndex = 0;
+         var mapFn = mapper ? bind$3(mapper, thisArg) : false;
+         var element, elementLen;
 
-         _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];
+         while (sourceIndex < sourceLen) {
+           if (sourceIndex in source) {
+             element = mapFn ? mapFn(source[sourceIndex], sourceIndex, original) : source[sourceIndex];
 
-             if (acc.indexOf(geometry) === -1) {
-               acc.push(geometry);
+             if (depth > 0 && isArray(element)) {
+               elementLen = lengthOfArrayLike$1(element);
+               targetIndex = flattenIntoArray$1(target, original, element, elementLen, targetIndex, depth - 1) - 1;
+             } else {
+               if (targetIndex >= 0x1FFFFFFFFFFFFF) throw TypeError$2('Exceed the acceptable array length');
+               target[targetIndex] = element;
              }
-           }
 
-           return acc;
-         }, []);
-
-         _this.matchGeometry = function (geom) {
-           return _this.geometry.indexOf(geom) >= 0;
-         };
+             targetIndex++;
+           }
+           sourceIndex++;
+         }
+         return targetIndex;
+       };
 
-         _this.matchAllGeometry = function (geometries) {
-           return _this.members.collection.some(function (preset) {
-             return preset.matchAllGeometry(geometries);
-           });
-         };
+       var flattenIntoArray_1 = flattenIntoArray$1;
 
-         _this.matchScore = function () {
-           return -1;
-         };
+       var $$e = _export;
+       var flattenIntoArray = flattenIntoArray_1;
+       var aCallable = aCallable$a;
+       var toObject = toObject$i;
+       var lengthOfArrayLike = lengthOfArrayLike$i;
+       var arraySpeciesCreate = arraySpeciesCreate$4;
 
-         _this.name = function () {
-           return _t("_tagging.presets.categories.".concat(categoryID, ".name"), {
-             'default': categoryID
-           });
-         };
+       // `Array.prototype.flatMap` method
+       // https://tc39.es/ecma262/#sec-array.prototype.flatmap
+       $$e({ target: 'Array', proto: true }, {
+         flatMap: function flatMap(callbackfn /* , thisArg */) {
+           var O = toObject(this);
+           var sourceLen = lengthOfArrayLike(O);
+           var A;
+           aCallable(callbackfn);
+           A = arraySpeciesCreate(O, 0);
+           A.length = flattenIntoArray(A, O, O, sourceLen, 0, 1, callbackfn, arguments.length > 1 ? arguments[1] : undefined);
+           return A;
+         }
+       });
 
-         _this.nameLabel = function () {
-           return _t.html("_tagging.presets.categories.".concat(categoryID, ".name"), {
-             'default': categoryID
-           });
-         };
+       // this method was added to unscopables after implementation
+       // in popular engines, so it's moved to a separate module
+       var addToUnscopables = addToUnscopables$6;
 
-         _this.terms = function () {
-           return [];
-         };
+       // https://tc39.es/ecma262/#sec-array.prototype-@@unscopables
+       addToUnscopables('flatMap');
 
-         _this.searchName = function () {
-           if (!_searchName) {
-             _searchName = (_this.suggestion ? _this.originalName : _this.name()).toLowerCase();
-           }
+       var $$d = _export;
+       var uncurryThis$6 = functionUncurryThis;
+       var getOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
+       var toLength$2 = toLength$c;
+       var toString$2 = toString$k;
+       var notARegExp$1 = notARegexp;
+       var requireObjectCoercible$2 = requireObjectCoercible$e;
+       var correctIsRegExpLogic$1 = correctIsRegexpLogic;
 
-           return _searchName;
-         };
+       // eslint-disable-next-line es/no-string-prototype-endswith -- safe
+       var un$EndsWith = uncurryThis$6(''.endsWith);
+       var slice$2 = uncurryThis$6(''.slice);
+       var min$1 = Math.min;
 
-         _this.searchNameStripped = function () {
-           if (!_searchNameStripped) {
-             _searchNameStripped = _this.searchName(); // split combined diacritical characters into their parts
+       var CORRECT_IS_REGEXP_LOGIC$1 = correctIsRegExpLogic$1('endsWith');
+       // 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, 'endsWith');
+         return descriptor && !descriptor.writable;
+       }();
 
-             if (_searchNameStripped.normalize) _searchNameStripped = _searchNameStripped.normalize('NFD'); // remove diacritics
+       // `String.prototype.endsWith` method
+       // https://tc39.es/ecma262/#sec-string.prototype.endswith
+       $$d({ target: 'String', proto: true, forced: !MDN_POLYFILL_BUG$1 && !CORRECT_IS_REGEXP_LOGIC$1 }, {
+         endsWith: function endsWith(searchString /* , endPosition = @length */) {
+           var that = toString$2(requireObjectCoercible$2(this));
+           notARegExp$1(searchString);
+           var endPosition = arguments.length > 1 ? arguments[1] : undefined;
+           var len = that.length;
+           var end = endPosition === undefined ? len : min$1(toLength$2(endPosition), len);
+           var search = toString$2(searchString);
+           return un$EndsWith
+             ? un$EndsWith(that, search, end)
+             : slice$2(that, end - search.length, end) === search;
+         }
+       });
 
-             _searchNameStripped = _searchNameStripped.replace(/[\u0300-\u036f]/g, '');
-           }
+       // https://github.com/tc39/proposal-string-pad-start-end
+       var uncurryThis$5 = functionUncurryThis;
+       var toLength$1 = toLength$c;
+       var toString$1 = toString$k;
+       var $repeat = stringRepeat;
+       var requireObjectCoercible$1 = requireObjectCoercible$e;
+
+       var repeat$1 = uncurryThis$5($repeat);
+       var stringSlice$2 = uncurryThis$5(''.slice);
+       var ceil = Math.ceil;
 
-           return _searchNameStripped;
+       // `String.prototype.{ padStart, padEnd }` methods implementation
+       var createMethod = function (IS_END) {
+         return function ($this, maxLength, fillString) {
+           var S = toString$1(requireObjectCoercible$1($this));
+           var intMaxLength = toLength$1(maxLength);
+           var stringLength = S.length;
+           var fillStr = fillString === undefined ? ' ' : toString$1(fillString);
+           var fillLen, stringFiller;
+           if (intMaxLength <= stringLength || fillStr == '') return S;
+           fillLen = intMaxLength - stringLength;
+           stringFiller = repeat$1(fillStr, ceil(fillLen / fillStr.length));
+           if (stringFiller.length > fillLen) stringFiller = stringSlice$2(stringFiller, 0, fillLen);
+           return IS_END ? S + stringFiller : stringFiller + S;
          };
+       };
 
-         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
-
+       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.id = fieldID; // for use in classes, element ids, css selectors
+       // https://github.com/zloirock/core-js/issues/280
+       var userAgent = engineUserAgent;
 
-         _this.safeid = utilSafeClassName(fieldID);
+       var stringPadWebkitBug = /Version\/10(?:\.\d+){1,2}(?: [\w./]+)?(?: Mobile\/\w+)? Safari\//.test(userAgent);
 
-         _this.matchGeometry = function (geom) {
-           return !_this.geometry || _this.geometry.indexOf(geom) !== -1;
-         };
+       var $$c = _export;
+       var $padEnd = stringPad.end;
+       var WEBKIT_BUG$1 = stringPadWebkitBug;
 
-         _this.matchAllGeometry = function (geometries) {
-           return !_this.geometry || geometries.every(function (geom) {
-             return _this.geometry.indexOf(geom) !== -1;
-           });
-         };
+       // `String.prototype.padEnd` method
+       // https://tc39.es/ecma262/#sec-string.prototype.padend
+       $$c({ target: 'String', proto: true, forced: WEBKIT_BUG$1 }, {
+         padEnd: function padEnd(maxLength /* , fillString = ' ' */) {
+           return $padEnd(this, maxLength, arguments.length > 1 ? arguments[1] : undefined);
+         }
+       });
 
-         _this.t = function (scope, options) {
-           return _t("_tagging.presets.fields.".concat(fieldID, ".").concat(scope), options);
-         };
+       var $$b = _export;
+       var $padStart = stringPad.start;
+       var WEBKIT_BUG = stringPadWebkitBug;
 
-         _this.t.html = function (scope, options) {
-           return _t.html("_tagging.presets.fields.".concat(fieldID, ".").concat(scope), options);
-         };
+       // `String.prototype.padStart` method
+       // https://tc39.es/ecma262/#sec-string.prototype.padstart
+       $$b({ target: 'String', proto: true, forced: WEBKIT_BUG }, {
+         padStart: function padStart(maxLength /* , fillString = ' ' */) {
+           return $padStart(this, maxLength, arguments.length > 1 ? arguments[1] : undefined);
+         }
+       });
 
-         _this.hasTextForStringId = function (scope) {
-           return _mainLocalizer.hasTextForStringId("_tagging.presets.fields.".concat(fieldID, ".").concat(scope));
-         };
+       var $$a = _export;
+       var $reduceRight = arrayReduce.right;
+       var arrayMethodIsStrict = arrayMethodIsStrict$9;
+       var CHROME_VERSION = engineV8Version;
+       var IS_NODE = engineIsNode;
 
-         _this.title = function () {
-           return _this.overrideLabel || _this.t('label', {
-             'default': fieldID
-           });
-         };
+       var STRICT_METHOD = arrayMethodIsStrict('reduceRight');
+       // 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;
 
-         _this.label = function () {
-           return _this.overrideLabel || _this.t.html('label', {
-             'default': fieldID
-           });
-         };
+       // `Array.prototype.reduceRight` method
+       // https://tc39.es/ecma262/#sec-array.prototype.reduceright
+       $$a({ target: 'Array', proto: true, forced: !STRICT_METHOD || CHROME_BUG }, {
+         reduceRight: function reduceRight(callbackfn /* , initialValue */) {
+           return $reduceRight(this, callbackfn, arguments.length, arguments.length > 1 ? arguments[1] : undefined);
+         }
+       });
 
-         var _placeholder = _this.placeholder;
+       var $$9 = _export;
+       var repeat = stringRepeat;
 
-         _this.placeholder = function () {
-           return _this.t('placeholder', {
-             'default': _placeholder
-           });
-         };
+       // `String.prototype.repeat` method
+       // https://tc39.es/ecma262/#sec-string.prototype.repeat
+       $$9({ target: 'String', proto: true }, {
+         repeat: repeat
+       });
 
-         _this.originalTerms = (_this.terms || []).join();
+       var $$8 = _export;
+       var uncurryThis$4 = functionUncurryThis;
+       var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
+       var toLength = toLength$c;
+       var toString = toString$k;
+       var notARegExp = notARegexp;
+       var requireObjectCoercible = requireObjectCoercible$e;
+       var correctIsRegExpLogic = correctIsRegexpLogic;
 
-         _this.terms = function () {
-           return _this.t('terms', {
-             'default': _this.originalTerms
-           }).toLowerCase().trim().split(/\s*,+\s*/);
-         };
+       // eslint-disable-next-line es/no-string-prototype-startswith -- safe
+       var un$StartsWith = uncurryThis$4(''.startsWith);
+       var stringSlice$1 = uncurryThis$4(''.slice);
+       var min = Math.min;
 
-         _this.increment = _this.type === 'number' ? _this.increment || 1 : undefined;
-         return _this;
-       }
+       var CORRECT_IS_REGEXP_LOGIC = correctIsRegExpLogic('startsWith');
+       // https://github.com/zloirock/core-js/pull/702
+       var MDN_POLYFILL_BUG = !CORRECT_IS_REGEXP_LOGIC && !!function () {
+         var descriptor = getOwnPropertyDescriptor(String.prototype, 'startsWith');
+         return descriptor && !descriptor.writable;
+       }();
 
-       // `Array.prototype.lastIndexOf` method
-       // https://tc39.es/ecma262/#sec-array.prototype.lastindexof
-       // eslint-disable-next-line es/no-array-prototype-lastindexof -- required for testing
-       _export({ target: 'Array', proto: true, forced: arrayLastIndexOf !== [].lastIndexOf }, {
-         lastIndexOf: arrayLastIndexOf
+       // `String.prototype.startsWith` method
+       // https://tc39.es/ecma262/#sec-string.prototype.startswith
+       $$8({ target: 'String', proto: true, forced: !MDN_POLYFILL_BUG && !CORRECT_IS_REGEXP_LOGIC }, {
+         startsWith: function startsWith(searchString /* , position = 0 */) {
+           var that = toString(requireObjectCoercible(this));
+           notARegExp(searchString);
+           var index = toLength(min(arguments.length > 1 ? arguments[1] : undefined, that.length));
+           var search = toString(searchString);
+           return un$StartsWith
+             ? un$StartsWith(that, search, index)
+             : stringSlice$1(that, index, index + search.length) === search;
+         }
        });
 
-       // `presetPreset` decorates a given `preset` Object
-       // with some extra methods for searching and matching geometry
-       //
+       var $$7 = _export;
+       var $trimEnd = stringTrim.end;
+       var forcedStringTrimMethod$1 = stringTrimForced;
 
-       function presetPreset(presetID, preset, addable, allFields, allPresets) {
-         allFields = allFields || {};
-         allPresets = allPresets || {};
+       var FORCED$4 = forcedStringTrimMethod$1('trimEnd');
 
-         var _this = Object.assign({}, preset); // shallow copy
+       var trimEnd = FORCED$4 ? function trimEnd() {
+         return $trimEnd(this);
+       // eslint-disable-next-line es/no-string-prototype-trimstart-trimend -- safe
+       } : ''.trimEnd;
 
+       // `String.prototype.{ trimEnd, trimRight }` methods
+       // https://tc39.es/ecma262/#sec-string.prototype.trimend
+       // https://tc39.es/ecma262/#String.prototype.trimright
+       $$7({ target: 'String', proto: true, name: 'trimEnd', forced: FORCED$4 }, {
+         trimEnd: trimEnd,
+         trimRight: trimEnd
+       });
 
-         var _addable = addable || false;
+       var $$6 = _export;
+       var $trimStart = stringTrim.start;
+       var forcedStringTrimMethod = stringTrimForced;
 
-         var _resolvedFields; // cache
+       var FORCED$3 = forcedStringTrimMethod('trimStart');
 
+       var trimStart = FORCED$3 ? function trimStart() {
+         return $trimStart(this);
+       // eslint-disable-next-line es/no-string-prototype-trimstart-trimend -- safe
+       } : ''.trimStart;
 
-         var _resolvedMoreFields; // cache
+       // `String.prototype.{ trimStart, trimLeft }` methods
+       // https://tc39.es/ecma262/#sec-string.prototype.trimstart
+       // https://tc39.es/ecma262/#String.prototype.trimleft
+       $$6({ target: 'String', proto: true, name: 'trimStart', forced: FORCED$3 }, {
+         trimStart: trimStart,
+         trimLeft: trimStart
+       });
 
+       var _mainLocalizer = coreLocalizer(); // singleton
 
-         var _searchName; // cache
 
+       var _t = _mainLocalizer.t;
+       // coreLocalizer manages language and locale parameters including translated strings
+       //
 
-         var _searchNameStripped; // cache
+       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: {…}, … },
+         // …
+         // }
 
-         _this.id = presetID;
-         _this.safeid = utilSafeClassName(presetID); // for use in css classes, selectors, element ids
+         var _localeStrings = {}; // the current locale
 
-         _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 || [];
+         var _localeCode = 'en-US'; // `_localeCodes` must contain `_localeCode` first, optionally followed by fallbacks
 
-         _this.fields = function () {
-           return _resolvedFields || (_resolvedFields = resolve('fields'));
+         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;
          };
 
-         _this.moreFields = function () {
-           return _resolvedMoreFields || (_resolvedMoreFields = resolve('moreFields'));
+         localizer.localeCodes = function () {
+           return _localeCodes;
          };
 
-         _this.resetFields = function () {
-           return _resolvedFields = _resolvedMoreFields = null;
+         localizer.languageCode = function () {
+           return _languageCode;
          };
 
-         _this.tags = _this.tags || {};
-         _this.addTags = _this.addTags || _this.tags;
-         _this.removeTags = _this.removeTags || _this.addTags;
-         _this.geometry = _this.geometry || [];
+         localizer.textDirection = function () {
+           return _textDirection;
+         };
 
-         _this.matchGeometry = function (geom) {
-           return _this.geometry.indexOf(geom) >= 0;
+         localizer.usesMetric = function () {
+           return _usesMetric;
          };
 
-         _this.matchAllGeometry = function (geoms) {
-           return geoms.every(_this.matchGeometry);
+         localizer.languageNames = function () {
+           return _languageNames;
          };
 
-         _this.matchScore = function (entityTags) {
-           var tags = _this.tags;
-           var seen = {};
-           var score = 0; // match on tags
+         localizer.scriptNames = function () {
+           return _scriptNames;
+         }; // The client app may want to manually set the locale, regardless of the
+         // settings provided by the browser
 
-           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 _preferredLocaleCodes = [];
 
+         localizer.preferredLocaleCodes = function (codes) {
+           if (!arguments.length) return _preferredLocaleCodes;
 
-           var addTags = _this.addTags;
+           if (typeof codes === 'string') {
+             // be generous and accept delimited strings as input
+             _preferredLocaleCodes = codes.split(/,|;| /gi).filter(Boolean);
+           } else {
+             _preferredLocaleCodes = codes;
+           }
 
-           for (var _k in addTags) {
-             if (!seen[_k] && entityTags[_k] === addTags[_k]) {
-               score += _this.originalScore;
+           return localizer;
+         };
+
+         var _loadPromise;
+
+         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();
+
+           for (var scopeId in localeDirs) {
+             var key = "locales_index_".concat(scopeId);
+
+             if (!fileMap[key]) {
+               fileMap[key] = localeDirs[scopeId] + '/index.min.json';
              }
+
+             filesToFetch.push(key);
            }
 
-           return score;
-         };
+           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);
 
-         _this.t = function (scope, options) {
-           var textID = "_tagging.presets.presets.".concat(presetID, ".").concat(scope);
-           return _t(textID, options);
-         };
+             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
 
-         _this.t.html = function (scope, options) {
-           var textID = "_tagging.presets.presets.".concat(presetID, ".").concat(scope);
-           return _t.html(textID, options);
-         };
 
-         _this.name = function () {
-           return _this.t('name', {
-             'default': _this.originalName
-           });
-         };
+             _localeCodes = localesToUseFrom(requestedLocales);
+             _localeCode = _localeCodes[0]; // Run iD in the highest-priority locale; the rest are fallbacks
 
-         _this.nameLabel = function () {
-           return _this.t.html('name', {
-             'default': _this.originalName
-           });
-         };
+             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
 
-         _this.subtitle = function () {
-           if (_this.suggestion) {
-             var path = presetID.split('/');
-             path.pop(); // remove brand name
 
-             return _t('_tagging.presets.presets.' + path.join('/') + '.name');
-           }
+               _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
 
-           return null;
-         };
 
-         _this.subtitleLabel = function () {
-           if (_this.suggestion) {
-             var path = presetID.split('/');
-             path.pop(); // remove brand name
+         function localesToUseFrom(requestedLocales) {
+           var supportedLocales = _dataLocales;
+           var toUse = [];
 
-             return _t.html('_tagging.presets.presets.' + path.join('/') + '.name');
-           }
+           for (var i in requestedLocales) {
+             var locale = requestedLocales[i];
+             if (supportedLocales[locale]) toUse.push(locale);
 
-           return null;
-         };
+             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
 
-         _this.terms = function () {
-           return _this.t('terms', {
-             'default': _this.originalTerms
-           }).toLowerCase().trim().split(/\s*,+\s*/);
-         };
 
-         _this.searchName = function () {
-           if (!_searchName) {
-             _searchName = (_this.suggestion ? _this.originalName : _this.name()).toLowerCase();
+           return utilArrayUniq(toUse);
+         }
+
+         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';
            }
 
-           return _searchName;
-         };
+           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
 
-         _this.searchNameStripped = function () {
-           if (!_searchNameStripped) {
-             _searchNameStripped = _this.searchName(); // split combined diacritical characters into their parts
 
-             if (_searchNameStripped.normalize) _searchNameStripped = _searchNameStripped.normalize('NFD'); // remove diacritics
+         localizer.loadLocale = function (locale, scopeId, directory) {
+           // US English is the default
+           if (locale.toLowerCase() === 'en-us') locale = 'en';
 
-             _searchNameStripped = _searchNameStripped.replace(/[\u0300-\u036f]/g, '');
+           if (_localeStrings[scopeId] && _localeStrings[scopeId][locale]) {
+             // already loaded
+             return Promise.resolve(locale);
            }
 
-           return _searchNameStripped;
-         };
+           var fileMap = _mainFileFetcher.fileMap();
+           var key = "locale_".concat(scopeId, "_").concat(locale);
 
-         _this.isFallback = function () {
-           var tagCount = Object.keys(_this.tags).length;
-           return tagCount === 0 || tagCount === 1 && _this.tags.hasOwnProperty('area');
-         };
+           if (!fileMap[key]) {
+             fileMap[key] = "".concat(directory, "/").concat(locale, ".min.json");
+           }
 
-         _this.addable = function (val) {
-           if (!arguments.length) return _addable;
-           _addable = val;
-           return _this;
+           return _mainFileFetcher.get(key).then(function (d) {
+             if (!_localeStrings[scopeId]) _localeStrings[scopeId] = {};
+             _localeStrings[scopeId][locale] = d[locale];
+             return locale;
+           });
          };
 
-         _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'];
+         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`
 
-           if (qid) {
-             return {
-               qid: qid
-             };
-           } // Lookup documentation on OSM Wikibase...
 
+         function pluralRule(number, localeCode) {
+           // modern browsers have this functionality built-in
+           var rules = 'Intl' in window && Intl.PluralRules && new Intl.PluralRules(localeCode);
 
-           var key = _this.originalReference.key || Object.keys(utilObjectOmit(_this.tags, 'name'))[0];
-           var value = _this.originalReference.value || _this.tags[key];
+           if (rules) {
+             return rules.select(number);
+           } // fallback to basic one/other, as in English
 
-           if (value === '*') {
-             return {
-               key: key
-             };
-           } else {
-             return {
-               key: key,
-               value: value
-             };
-           }
-         };
 
-         _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));
+           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
+         */
 
-           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;
-         };
+         localizer.tInfo = function (origStringId, replacements, locale) {
+           var stringId = origStringId.trim();
+           var scopeId = 'general';
 
-         _this.setTags = function (tags, geometry, skipFieldDefaults) {
-           var addTags = _this.addTags;
-           tags = Object.assign({}, tags); // shallow copy
+           if (stringId[0] === '_') {
+             var split = stringId.split('.');
+             scopeId = split[0].slice(1);
+             stringId = split.slice(1).join('.');
+           }
 
-           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`)
+           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 && _localeStrings[scopeId] && _localeStrings[scopeId][stringsKey];
 
-           if (!addTags.hasOwnProperty('area')) {
-             delete tags.area;
+           while (result !== undefined && path.length) {
+             result = result[path.pop()];
+           }
 
-             if (geometry === 'area') {
-               var needsAreaTag = true;
+           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 (_this.geometry.indexOf('line') === -1) {
-                 for (var _k2 in addTags) {
-                   if (_k2 in osmAreaKeys) {
-                     needsAreaTag = false;
-                     break;
+                 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 (needsAreaTag) {
-                 tags.area = 'yes';
+               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);
+                 }
                }
              }
+
+             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(origStringId, replacements, fallback);
            }
 
-           if (geometry && !skipFieldDefaults) {
-             _this.fields().forEach(function (field) {
-               if (field.matchGeometry(geometry) && field.key && !tags[field.key] && field["default"]) {
-                 tags[field.key] = field["default"];
-               }
-             });
+           if (replacements && 'default' in replacements) {
+             // Fallback to a default value if one is specified in `replacements`
+             return {
+               text: replacements["default"],
+               locale: null
+             };
            }
 
-           return tags;
-         }; // For a preset without fields, use the fields of the parent preset.
-         // Replace {preset} placeholders with the fields of the specified presets.
+           var missing = "Missing ".concat(locale, " translation: ").concat(origStringId);
+           if (typeof console !== 'undefined') console.error(missing); // eslint-disable-line
 
+           return {
+             text: missing,
+             locale: 'en'
+           };
+         };
 
-         function resolve(which) {
-           var fieldIDs = which === 'fields' ? _this.originalFields : _this.originalMoreFields;
-           var resolved = [];
-           fieldIDs.forEach(function (fieldID) {
-             var match = fieldID.match(/\{(.*)\}/);
+         localizer.hasTextForStringId = function (stringId) {
+           return !!localizer.tInfo(stringId, {
+             "default": 'nothing found'
+           }).locale;
+         }; // Returns only the localized text, discarding the locale info
 
-             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
 
-           if (!resolved.length) {
-             var endIndex = _this.id.lastIndexOf('/');
+         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 parentID = endIndex && _this.id.substring(0, endIndex);
+         /**
+          * @deprecated This method is considered deprecated. Instead, use the direct DOM manipulating
+          *             method `t.append`.
+          */
 
-             if (parentID) {
-               resolved = inheritFields(parentID, which);
-             }
-           }
 
-           return utilArrayUniq(resolved); // returns an array of fields to inherit from the given presetID, if found
+         localizer.t.html = function (stringId, replacements, locale) {
+           // replacement string might be html unsafe, so we need to escape it except if it is explicitly marked as html code
+           replacements = Object.assign({}, replacements);
 
-           function inheritFields(presetID, which) {
-             var parent = allPresets[presetID];
-             if (!parent) return [];
+           for (var k in replacements) {
+             if (typeof replacements[k] === 'string') {
+               replacements[k] = escape$4(replacements[k]);
+             }
 
-             if (which === 'fields') {
-               return parent.fields().filter(shouldInherit);
-             } else if (which === 'moreFields') {
-               return parent.moreFields();
-             } else {
-               return [];
+             if (_typeof(replacements[k]) === 'object' && typeof replacements[k].html === 'string') {
+               replacements[k] = replacements[k].html;
              }
-           } // Skip `fields` for the keys which define the preset.
-           // These are usually `typeCombo` fields like `shop=*`
+           }
 
+           var info = localizer.tInfo(stringId, replacements, locale); // text may be empty or undefined if `replacements.default` is
 
-           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;
+           if (info.text) {
+             return "<span class=\"localized-text\" lang=\"".concat(info.locale || 'und', "\">").concat(info.text, "</span>");
+           } else {
+             return '';
            }
-         }
-
-         return _this;
-       }
+         }; // Adds localized text wrapped as an HTML span element with locale info to the DOM
 
-       var _mainPresetIndex = presetIndex(); // singleton
-       // `presetIndex` wraps a `presetCollection`
-       // with methods for loading new data and returning defaults
-       //
 
-       function presetIndex() {
-         var dispatch = dispatch$8('favoritePreset', 'recentsChange');
-         var MAXRECENTS = 30; // seed the preset lists with geometry fallbacks
+         localizer.t.append = function (stringId, replacements, locale) {
+           return function (selection) {
+             var info = localizer.tInfo(stringId, replacements, locale);
+             return selection.append('span').attr('class', 'localized-text').attr('lang', info.locale || 'und').text((replacements && replacements.prefix || '') + info.text + (replacements && replacements.suffix || ''));
+           };
+         };
 
-         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
-         });
+         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
 
-         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
+           if (options && options.localOnly) return null;
+           var langInfo = _dataLanguages[code];
 
-         var _recents;
+           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
 
-         var _favorites; // Index of presets by (geometry, tag key).
+               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
+                 });
+               }
+             }
+           }
 
-         var _geometryIndex = {
-           point: {},
-           vertex: {},
-           line: {},
-           area: {},
-           relation: {}
+           return code; // if not found, use the code
          };
 
-         var _loadPromise;
+         return localizer;
+       }
 
-         _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]
-             });
+       // `presetCollection` is a wrapper around an `Array` of presets `collection`,
+       // and decorated with some extra methods for searching and matching geometry
+       //
 
-             osmSetAreaKeys(_this.areaKeys());
-             osmSetPointTags(_this.pointTags());
-             osmSetVertexTags(_this.vertexTags());
+       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;
            });
-         }; // `merge` accepts an object containing new preset data (all properties optional):
-         // {
-         //   fields: {},
-         //   presets: {},
-         //   categories: {},
-         //   defaults: {},
-         //   featureCollection: {}
-         //}
 
+           if (found) _memo[id] = found;
+           return found;
+         };
 
-         _this.merge = function (d) {
-           var newLocationSets = []; // Merge Fields
+         _this.index = function (id) {
+           return _this.collection.findIndex(function (d) {
+             return d.id === id;
+           });
+         };
 
-           if (d.fields) {
-             Object.keys(d.fields).forEach(function (fieldID) {
-               var f = d.fields[fieldID];
+         _this.matchGeometry = function (geometry) {
+           return presetCollection(_this.collection.filter(function (d) {
+             return d.matchGeometry(geometry);
+           }));
+         };
 
-               if (f) {
-                 // add or replace
-                 f = presetField(fieldID, f);
-                 if (f.locationSet) newLocationSets.push(f);
-                 _fields[fieldID] = f;
-               } else {
-                 // remove
-                 delete _fields[fieldID];
-               }
+         _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);
              });
-           } // Merge Presets
+           }));
+         };
 
+         _this.fallback = function (geometry) {
+           var id = geometry;
+           if (id === 'vertex') id = 'point';
+           return _this.item(id);
+         };
 
-           if (d.presets) {
-             Object.keys(d.presets).forEach(function (presetID) {
-               var p = d.presets[presetID];
+         _this.search = function (value, geometry, loc) {
+           if (!value) return _this; // don't remove diacritical characters since we're assuming the user is being intentional
 
-               if (p) {
-                 // add or replace
-                 var isAddable = !_addablePresetIDs || _addablePresetIDs.has(presetID);
+           value = value.toLowerCase().trim(); // match at name beginning or just after a space (e.g. "office" -> match "Law Office")
 
-                 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];
+           function leading(a) {
+             var index = a.indexOf(value);
+             return index === 0 || a[index - 1] === ' ';
+           } // match at name beginning only
 
-                 if (existing && !existing.isFallback()) {
-                   delete _presets[presetID];
-                 }
-               }
-             });
-           } // Merge Categories
 
+           function leadingStrict(a) {
+             var index = a.indexOf(value);
+             return index === 0;
+           }
 
-           if (d.categories) {
-             Object.keys(d.categories).forEach(function (categoryID) {
-               var c = d.categories[categoryID];
+           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
 
-               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
+               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
 
-           _this.collection = Object.values(_presets).concat(Object.values(_categories)); // Merge Defaults
+               i = aCompare.indexOf(value) - bCompare.indexOf(value);
+               if (i !== 0) return i; // priority for shorter preset names
 
-           if (d.defaults) {
-             Object.keys(d.defaults).forEach(function (geometry) {
-               var def = d.defaults[geometry];
+               return aCompare.length - bCompare.length;
+             };
+           }
 
-               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
+           var pool = _this.collection;
 
+           if (Array.isArray(loc)) {
+             var validLocations = _mainLocations.locationsAt(loc);
+             pool = pool.filter(function (a) {
+               return !a.locationSetID || validLocations[a.locationSetID];
+             });
+           }
 
-           _universal = Object.values(_fields).filter(function (field) {
-             return field.universal;
-           }); // Reset all the preset fields - they'll need to be resolved again
+           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
 
-           Object.values(_presets).forEach(function (preset) {
-             return preset.resetFields();
-           }); // Rebuild geometry index
+           var leadingNames = searchable.filter(function (a) {
+             return leading(a.searchName());
+           }).sort(sortPresets('searchName')); // matches value to preset suggestion name
 
-           _geometryIndex = {
-             point: {},
-             vertex: {},
-             line: {},
-             area: {},
-             relation: {}
-           };
+           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
 
-           _this.collection.forEach(function (preset) {
-             (preset.geometry || []).forEach(function (geometry) {
-               var g = _geometryIndex[geometry];
+           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
 
-               for (var key in preset.tags) {
-                 (g[key] = g[key] || []).push(preset);
-               }
-             });
-           }); // Merge Custom Features
+           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
 
+           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
 
-           if (d.featureCollection && Array.isArray(d.featureCollection.features)) {
-             _mainLocations.mergeCustomGeoJSON(d.featureCollection);
-           } // Resolve all locationSet features.
+           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
 
+           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);
 
-           if (newLocationSets.length) {
-             _mainLocations.mergeLocationSets(newLocationSets);
+           if (geometry) {
+             if (typeof geometry === 'string') {
+               results.push(_this.fallback(geometry));
+             } else {
+               geometry.forEach(function (geom) {
+                 return results.push(_this.fallback(geom));
+               });
+             }
            }
 
-           return _this;
+           return presetCollection(utilArrayUniq(results));
          };
 
-         _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;
+       }
 
-             var entityExtent = entity.extent(resolver);
-             return _this.matchTags(entity.tags, geometry, entityExtent.center());
-           });
-         };
+       // `presetCategory` builds a `presetCollection` of member presets,
+       // decorated with some extra methods for searching and matching geometry
+       //
 
-         _this.matchTags = function (tags, geometry, loc) {
-           var geometryMatches = _geometryIndex[geometry];
-           var address;
-           var best = -1;
-           var match;
-           var validLocations;
+       function presetCategory(categoryID, category, allPresets) {
+         var _this = Object.assign({}, category); // shallow copy
 
-           if (Array.isArray(loc)) {
-             validLocations = _mainLocations.locationsAt(loc);
-           }
 
-           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 _searchName; // cache
 
-             var keyMatches = geometryMatches[k];
-             if (!keyMatches) continue;
 
-             for (var i = 0; i < keyMatches.length; i++) {
-               var candidate = keyMatches[i]; // discard candidate preset if location is not valid at `loc`
+         var _searchNameStripped; // cache
 
-               if (validLocations && candidate.locationSetID) {
-                 if (!validLocations[candidate.locationSetID]) continue;
-               }
 
-               var score = candidate.matchScore(tags);
+         _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];
 
-               if (score > best) {
-                 best = score;
-                 match = candidate;
-               }
+             if (acc.indexOf(geometry) === -1) {
+               acc.push(geometry);
              }
            }
 
-           if (address && (!match || match.isFallback())) {
-             match = address;
-           }
+           return acc;
+         }, []);
 
-           return match || _this.fallback(geometry);
+         _this.matchGeometry = function (geom) {
+           return _this.geometry.indexOf(geom) >= 0;
          };
 
-         _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;
+         _this.matchAllGeometry = function (geometries) {
+           return _this.members.collection.some(function (preset) {
+             return preset.matchAllGeometry(geometries);
            });
-         }; // 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.matchScore = function () {
+           return -1;
+         };
 
-         _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
+         _this.name = function () {
+           return _t("_tagging.presets.categories.".concat(categoryID, ".name"), {
+             'default': categoryID
+           });
+         };
 
-           var presets = _this.collection.filter(function (p) {
-             return !p.suggestion && !p.replacement;
-           }); // keeplist
+         _this.nameLabel = function () {
+           return _t.html("_tagging.presets.categories.".concat(categoryID, ".name"), {
+             'default': categoryID
+           });
+         };
 
+         _this.terms = function () {
+           return [];
+         };
 
-           presets.forEach(function (p) {
-             var keys = p.tags && Object.keys(p.tags);
-             var key = keys && keys.length && keys[0]; // pick the first tag
+         _this.searchName = function () {
+           if (!_searchName) {
+             _searchName = (_this.suggestion ? _this.originalName : _this.name()).toLowerCase();
+           }
 
-             if (!key) return;
-             if (ignore.indexOf(key) !== -1) return;
+           return _searchName;
+         };
 
-             if (p.geometry.indexOf('area') !== -1) {
-               // probably an area..
-               areaKeys[key] = areaKeys[key] || {};
-             }
-           }); // discardlist
+         _this.searchNameStripped = function () {
+           if (!_searchNameStripped) {
+             _searchNameStripped = _this.searchName(); // split combined diacritical characters into their parts
 
-           presets.forEach(function (p) {
-             var key;
+             if (_searchNameStripped.normalize) _searchNameStripped = _searchNameStripped.normalize('NFD'); // remove diacritics
 
-             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];
+             _searchNameStripped = _searchNameStripped.replace(/[\u0300-\u036f]/g, '');
+           }
 
-               if (key in areaKeys && // probably an area...
-               p.geometry.indexOf('line') !== -1 && // but sometimes a line
-               value !== '*') {
-                 areaKeys[key][value] = true;
-               }
-             }
-           });
-           return areaKeys;
+           return _searchNameStripped;
          };
 
-         _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
+         return _this;
+       }
 
-             var keys = d.tags && Object.keys(d.tags);
-             var key = keys && keys.length && keys[0]; // pick the first tag
+       // `presetField` decorates a given `field` Object
+       // with some extra methods for searching and matching geometry
+       //
 
-             if (!key) return pointTags; // if this can be a point
+       function presetField(fieldID, field) {
+         var _this = Object.assign({}, field); // shallow copy
 
-             if (d.geometry.indexOf('point') !== -1) {
-               pointTags[key] = pointTags[key] || {};
-               pointTags[key][d.tags[key]] = true;
-             }
 
-             return pointTags;
-           }, {});
-         };
+         _this.id = fieldID; // for use in classes, element ids, css selectors
 
-         _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
+         _this.safeid = utilSafeClassName(fieldID);
 
-             var keys = d.tags && Object.keys(d.tags);
-             var key = keys && keys.length && keys[0]; // pick the first tag
+         _this.matchGeometry = function (geom) {
+           return !_this.geometry || _this.geometry.indexOf(geom) !== -1;
+         };
 
-             if (!key) return vertexTags; // if this can be a vertex
+         _this.matchAllGeometry = function (geometries) {
+           return !_this.geometry || geometries.every(function (geom) {
+             return _this.geometry.indexOf(geom) !== -1;
+           });
+         };
 
-             if (d.geometry.indexOf('vertex') !== -1) {
-               vertexTags[key] = vertexTags[key] || {};
-               vertexTags[key][d.tags[key]] = true;
-             }
+         _this.t = function (scope, options) {
+           return _t("_tagging.presets.fields.".concat(fieldID, ".").concat(scope), options);
+         };
 
-             return vertexTags;
-           }, {});
+         _this.t.html = function (scope, options) {
+           return _t.html("_tagging.presets.fields.".concat(fieldID, ".").concat(scope), options);
          };
 
-         _this.field = function (id) {
-           return _fields[id];
+         _this.hasTextForStringId = function (scope) {
+           return _mainLocalizer.hasTextForStringId("_tagging.presets.fields.".concat(fieldID, ".").concat(scope));
          };
 
-         _this.universal = function () {
-           return _universal;
+         _this.title = function () {
+           return _this.overrideLabel || _this.t('label', {
+             'default': fieldID
+           });
          };
 
-         _this.defaults = function (geometry, n, startWithRecents, loc) {
-           var recents = [];
+         _this.label = function () {
+           return _this.overrideLabel || _this.t.html('label', {
+             'default': fieldID
+           });
+         };
 
-           if (startWithRecents) {
-             recents = _this.recent().matchGeometry(geometry).collection.slice(0, 4);
-           }
+         var _placeholder = _this.placeholder;
 
-           var defaults;
+         _this.placeholder = function () {
+           return _this.t('placeholder', {
+             'default': _placeholder
+           });
+         };
 
-           if (_addablePresetIDs) {
-             defaults = Array.from(_addablePresetIDs).map(function (id) {
-               var preset = _this.item(id);
+         _this.originalTerms = (_this.terms || []).join();
 
-               if (preset && preset.matchGeometry(geometry)) return preset;
-               return null;
-             }).filter(Boolean);
-           } else {
-             defaults = _defaults[geometry].collection.concat(_this.fallback(geometry));
-           }
+         _this.terms = function () {
+           return _this.t('terms', {
+             'default': _this.originalTerms
+           }).toLowerCase().trim().split(/\s*,+\s*/);
+         };
 
-           var result = presetCollection(utilArrayUniq(recents.concat(defaults)).slice(0, n - 1));
+         _this.increment = _this.type === 'number' ? _this.increment || 1 : undefined;
+         return _this;
+       }
 
-           if (Array.isArray(loc)) {
-             var validLocations = _mainLocations.locationsAt(loc);
-             result.collection = result.collection.filter(function (a) {
-               return !a.locationSetID || validLocations[a.locationSetID];
-             });
-           }
+       // `presetPreset` decorates a given `preset` Object
+       // with some extra methods for searching and matching geometry
+       //
 
-           return result;
-         }; // pass a Set of addable preset ids
+       function presetPreset(presetID, preset, addable, allFields, allPresets) {
+         allFields = allFields || {};
+         allPresets = allPresets || {};
 
+         var _this = Object.assign({}, preset); // shallow copy
 
-         _this.addablePresetIDs = function (val) {
-           if (!arguments.length) return _addablePresetIDs; // accept and convert arrays
 
-           if (Array.isArray(val)) val = new Set(val);
-           _addablePresetIDs = val;
+         var _addable = addable || false;
 
-           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);
-             });
-           }
+         var _resolvedFields; // cache
 
-           return _this;
-         };
 
-         _this.recent = function () {
-           return presetCollection(utilArrayUniq(_this.getRecents().map(function (d) {
-             return d.preset;
-           })));
-         };
+         var _resolvedMoreFields; // cache
 
-         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;
-           };
+         var _searchName; // cache
 
-           item.minified = function () {
-             return {
-               pID: item.preset.id
-             };
-           };
 
-           return item;
-         }
+         var _searchNameStripped; // cache
 
-         function ribbonItemForMinified(d, source) {
-           if (d && d.pID) {
-             var preset = _this.item(d.pID);
 
-             if (!preset) return null;
-             return RibbonItem(preset, source);
-           }
+         _this.id = presetID;
+         _this.safeid = utilSafeClassName(presetID); // for use in css classes, selectors, element ids
 
-           return null;
-         }
+         _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.getGenericRibbonItems = function () {
-           return ['point', 'line', 'area'].map(function (id) {
-             return RibbonItem(_this.item(id), 'generic');
-           });
+         _this.fields = function () {
+           return _resolvedFields || (_resolvedFields = resolve('fields'));
          };
 
-         _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);
+         _this.moreFields = function () {
+           return _resolvedMoreFields || (_resolvedMoreFields = resolve('moreFields'));
          };
 
-         function setRecents(items) {
-           _recents = items;
-           var minifiedItems = items.map(function (d) {
-             return d.minified();
-           });
-           corePreferences('preset_recents', JSON.stringify(minifiedItems));
-           dispatch.call('recentsChange');
-         }
-
-         _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.resetFields = function () {
+           return _resolvedFields = _resolvedMoreFields = null;
          };
 
-         _this.addRecent = function (preset, besidePreset, after) {
-           var recents = _this.getRecents();
+         _this.tags = _this.tags || {};
+         _this.addTags = _this.addTags || _this.tags;
+         _this.removeTags = _this.removeTags || _this.addTags;
+         _this.geometry = _this.geometry || [];
 
-           var beforeItem = _this.recentMatching(besidePreset);
+         _this.matchGeometry = function (geom) {
+           return _this.geometry.indexOf(geom) >= 0;
+         };
 
-           var toIndex = recents.indexOf(beforeItem);
-           if (after) toIndex += 1;
-           var newItem = RibbonItem(preset, 'recent');
-           recents.splice(toIndex, 0, newItem);
-           setRecents(recents);
+         _this.matchAllGeometry = function (geoms) {
+           return geoms.every(_this.matchGeometry);
          };
 
-         _this.removeRecent = function (preset) {
-           var item = _this.recentMatching(preset);
+         _this.matchScore = function (entityTags) {
+           var tags = _this.tags;
+           var seen = {};
+           var score = 0; // match on tags
 
-           if (item) {
-             var items = _this.getRecents();
+           for (var k in tags) {
+             seen[k] = true;
 
-             items.splice(items.indexOf(item), 1);
-             setRecents(items);
-           }
-         };
+             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
 
-         _this.recentMatching = function (preset) {
-           var items = _this.getRecents();
 
-           for (var i in items) {
-             if (items[i].matches(preset)) {
-               return items[i];
+           var addTags = _this.addTags;
+
+           for (var _k in addTags) {
+             if (!seen[_k] && entityTags[_k] === addTags[_k]) {
+               score += _this.originalScore;
              }
            }
 
-           return null;
+           return score;
          };
 
-         _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.t = function (scope, options) {
+           var textID = "_tagging.presets.presets.".concat(presetID, ".").concat(scope);
+           return _t(textID, options);
          };
 
-         _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.t.html = function (scope, options) {
+           var textID = "_tagging.presets.presets.".concat(presetID, ".").concat(scope);
+           return _t.html(textID, options);
          };
 
-         _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)
+         _this.name = function () {
+           return _this.t('name', {
+             'default': _this.originalName
+           });
+         };
 
+         _this.nameLabel = function () {
+           return _this.t.html('name', {
+             'default': _this.originalName
+           });
+         };
 
-           while (items.length >= MAXRECENTS) {
-             items.pop();
-           } // prepend array
+         _this.subtitle = function () {
+           if (_this.suggestion) {
+             var path = presetID.split('/');
+             path.pop(); // remove brand name
 
+             return _t('_tagging.presets.presets.' + path.join('/') + '.name');
+           }
 
-           items.unshift(item);
-           setRecents(items);
+           return 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');
-         }
+         _this.subtitleLabel = function () {
+           if (_this.suggestion) {
+             var path = presetID.split('/');
+             path.pop(); // remove brand name
 
-         _this.addFavorite = function (preset, besidePreset, after) {
-           var favorites = _this.getFavorites();
+             return _t.html('_tagging.presets.presets.' + path.join('/') + '.name');
+           }
 
-           var beforeItem = _this.favoriteMatching(besidePreset);
+           return null;
+         };
 
-           var toIndex = favorites.indexOf(beforeItem);
-           if (after) toIndex += 1;
-           var newItem = RibbonItem(preset, 'favorite');
-           favorites.splice(toIndex, 0, newItem);
-           setFavorites(favorites);
+         _this.terms = function () {
+           return _this.t('terms', {
+             'default': _this.originalTerms
+           }).toLowerCase().trim().split(/\s*,+\s*/);
          };
 
-         _this.toggleFavorite = function (preset) {
-           var favs = _this.getFavorites();
+         _this.searchName = function () {
+           if (!_searchName) {
+             _searchName = (_this.suggestion ? _this.originalName : _this.name()).toLowerCase();
+           }
 
-           var favorite = _this.favoriteMatching(preset);
+           return _searchName;
+         };
 
-           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
+         _this.searchNameStripped = function () {
+           if (!_searchNameStripped) {
+             _searchNameStripped = _this.searchName(); // split combined diacritical characters into their parts
 
+             if (_searchNameStripped.normalize) _searchNameStripped = _searchNameStripped.normalize('NFD'); // remove diacritics
 
-             favs.push(RibbonItem(preset, 'favorite'));
+             _searchNameStripped = _searchNameStripped.replace(/[\u0300-\u036f]/g, '');
            }
 
-           setFavorites(favs);
+           return _searchNameStripped;
          };
 
-         _this.removeFavorite = function (preset) {
-           var item = _this.favoriteMatching(preset);
-
-           if (item) {
-             var items = _this.getFavorites();
+         _this.isFallback = function () {
+           var tagCount = Object.keys(_this.tags).length;
+           return tagCount === 0 || tagCount === 1 && _this.tags.hasOwnProperty('area');
+         };
 
-             items.splice(items.indexOf(item), 1);
-             setFavorites(items);
-           }
+         _this.addable = function (val) {
+           if (!arguments.length) return _addable;
+           _addable = val;
+           return _this;
          };
 
-         _this.getFavorites = function () {
-           if (!_favorites) {
-             // fetch from local storage
-             var rawFavorites = JSON.parse(corePreferences('preset_favorites'));
+         _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'];
 
-             if (!rawFavorites) {
-               rawFavorites = [];
-               corePreferences('preset_favorites', JSON.stringify(rawFavorites));
-             }
+           if (qid) {
+             return {
+               qid: qid
+             };
+           } // Lookup documentation on OSM Wikibase...
 
-             _favorites = rawFavorites.reduce(function (output, d) {
-               var item = ribbonItemForMinified(d, 'favorite');
-               if (item && item.preset.addable()) output.push(item);
-               return output;
-             }, []);
-           }
 
-           return _favorites;
+           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.favoriteMatching = function (preset) {
-           var favs = _this.getFavorites();
+         _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));
 
-           for (var index in favs) {
-             if (favs[index].matches(preset)) {
-               return favs[index];
-             }
+           if (geometry && !skipFieldDefaults) {
+             _this.fields().forEach(function (field) {
+               if (field.matchGeometry(geometry) && field.key && field["default"] === tags[field.key]) {
+                 delete tags[field.key];
+               }
+             });
            }
 
-           return null;
+           delete tags.area;
+           return tags;
          };
 
-         return utilRebind(_this, dispatch, 'on');
-       }
+         _this.setTags = function (tags, geometry, skipFieldDefaults) {
+           var addTags = _this.addTags;
+           tags = Object.assign({}, tags); // shallow copy
 
-       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 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`)
 
-         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));
-           }
-         }
+           if (!addTags.hasOwnProperty('area')) {
+             delete tags.area;
 
-         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 (geometry === 'area') {
+               var needsAreaTag = true;
 
-           if ((oldVal || oldVal === '') && (newVal === undefined || newVal !== oldVal)) {
-             tagDiff.push({
-               type: '-',
-               key: k,
-               oldVal: oldVal,
-               newVal: newVal,
-               display: '- ' + k + '=' + oldVal
-             });
+               if (_this.geometry.indexOf('line') === -1) {
+                 for (var _k2 in addTags) {
+                   if (_k2 in osmAreaKeys) {
+                     needsAreaTag = false;
+                     break;
+                   }
+                 }
+               }
+
+               if (needsAreaTag) {
+                 tags.area = 'yes';
+               }
+             }
            }
 
-           if ((newVal || newVal === '') && (oldVal === undefined || newVal !== oldVal)) {
-             tagDiff.push({
-               type: '+',
-               key: k,
-               oldVal: oldVal,
-               newVal: newVal,
-               display: '+ ' + k + '=' + newVal
+           if (geometry && !skipFieldDefaults) {
+             _this.fields().forEach(function (field) {
+               if (field.matchGeometry(geometry) && field.key && !tags[field.key] && field["default"]) {
+                 tags[field.key] = field["default"];
+               }
              });
            }
-         });
-         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);
-           });
-         }
-       } // returns an selector to select entity ids for:
-       //  - entityIDs passed in
-       //  - deep descendant entityIDs for any of those entities that are relations
+           return tags;
+         }; // For a preset without fields, use the fields of the parent preset.
+         // Replace {preset} placeholders with the fields of the specified presets.
 
-       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 resolve(which) {
+           var fieldIDs = which === 'fields' ? _this.originalFields : _this.originalMoreFields;
+           var resolved = [];
+           fieldIDs.forEach(function (fieldID) {
+             var match = fieldID.match(/\{(.*)\}/);
 
-         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
+             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
 
-       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));
+           if (!resolved.length) {
+             var endIndex = _this.id.lastIndexOf('/');
 
-         function collectDeepDescendants(id) {
-           if (seen.has(id)) return;
-           seen.add(id);
+             var parentID = endIndex && _this.id.substring(0, endIndex);
 
-           if (!idsSet.has(id)) {
-             returners.add(id);
+             if (parentID) {
+               resolved = inheritFields(parentID, which);
+             }
            }
 
-           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
+           return utilArrayUniq(resolved); // returns an array of fields to inherit from the given presetID, if found
 
-       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 inheritFields(presetID, which) {
+             var parent = allPresets[presetID];
+             if (!parent) return [];
 
-       function utilGetAllNodes(ids, graph) {
-         var seen = new Set();
-         var nodes = new Set();
-         ids.forEach(collectNodes);
-         return Array.from(nodes);
+             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 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
+           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 _this;
        }
-       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 = [];
 
-         if (tags.network) {
-           keyComponents.push('network');
-         }
+       var _mainPresetIndex = presetIndex(); // singleton
+       // `presetIndex` wraps a `presetCollection`
+       // with methods for loading new data and returning defaults
+       //
 
-         if (tags.ref) {
-           keyComponents.push('ref');
-         } // Routes may need more disambiguation based on direction or destination
+       function presetIndex() {
+         var dispatch = dispatch$8('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
+         });
 
-         if (entity.tags.route) {
-           if (tags.direction) {
-             keyComponents.push('direction');
-           } else if (tags.from && tags.to) {
-             keyComponents.push('from');
-             keyComponents.push('to');
+         var _this = presetCollection([POINT, LINE, AREA, RELATION]);
 
-             if (tags.via) {
-               keyComponents.push('via');
-             }
-           }
-         }
+         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 (keyComponents.length) {
-           name = _t('inspector.display_name.' + keyComponents.join('_'), tags);
-         }
+         var _recents;
 
-         return name;
-       }
-       function utilDisplayNameForPath(entity) {
-         var name = utilDisplayName(entity);
-         var isFirefox = utilDetect().browser.toLowerCase().indexOf('firefox') > -1;
+         var _favorites; // Index of presets by (geometry, tag key).
 
-         if (!isFirefox && name && rtlRegex.test(name)) {
-           name = fixRTLTextForSvg(name);
-         }
 
-         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"
-       //
+         var _geometryIndex = {
+           point: {},
+           vertex: {},
+           line: {},
+           area: {},
+           relation: {}
+         };
 
-       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());
+         var _loadPromise;
 
-         if (verbose) {
-           result = [presetName, displayName].filter(Boolean).join(' ');
-         } else {
-           result = displayName || presetName;
-         } // Fallback to the OSM type (node/way/relation)
+         _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 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 ]
-       // }
 
-       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
+         _this.merge = function (d) {
+           var newLocationSets = []; // Merge Fields
 
-         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 (d.fields) {
+             Object.keys(d.fields).forEach(function (fieldID) {
+               var f = d.fields[fieldID];
 
-             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];
-                 }
+               if (f) {
+                 // add or replace
+                 f = presetField(fieldID, f);
+                 if (f.locationSet) newLocationSets.push(f);
+                 _fields[fieldID] = f;
                } else {
-                 // type is array
-                 if (tags[key].indexOf(value) === -1) {
-                   // subsequent alternate value, add to array
-                   tags[key].push(value);
-                 }
+                 // remove
+                 delete _fields[fieldID];
                }
-             }
+             });
+           } // Merge Presets
 
-             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
+           if (d.presets) {
+             Object.keys(d.presets).forEach(function (presetID) {
+               var p = d.presets[presetID];
 
-           tags[key] = tags[key].sort(function (val1, val2) {
-             var key = key; // capture
+               if (p) {
+                 // add or replace
+                 var isAddable = !_addablePresetIDs || _addablePresetIDs.has(presetID);
 
-             var count2 = tagCounts[key + '=' + val2];
-             var count1 = tagCounts[key + '=' + val1];
+                 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 (count2 !== count1) {
-               return count2 - count1;
-             }
+                 if (existing && !existing.isFallback()) {
+                   delete _presets[presetID];
+                 }
+               }
+             });
+           } // Merge Categories
 
-             if (val2 && val1) {
-               return val1.localeCompare(val2);
-             }
 
-             return val1 ? 1 : -1;
-           });
-         }
+           if (d.categories) {
+             Object.keys(d.categories).forEach(function (categoryID) {
+               var c = d.categories[categoryID];
 
-         return tags;
-       }
-       function utilStringQs(str) {
-         var i = 0; // advance past any leading '?' or '#' characters
+               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
 
-         while (i < str.length && (str[i] === '?' || str[i] === '#')) {
-           i++;
-         }
 
-         str = str.slice(i);
-         return str.split('&').reduce(function (obj, pair) {
-           var parts = pair.split('=');
+           _this.collection = Object.values(_presets).concat(Object.values(_categories)); // Merge Defaults
 
-           if (parts.length === 2) {
-             obj[parts[0]] = null === parts[1] ? '' : decodeURIComponent(parts[1]);
-           }
+           if (d.defaults) {
+             Object.keys(d.defaults).forEach(function (geometry) {
+               var def = d.defaults[geometry];
 
-           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);
-         }
+               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
 
-         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;
-           }
-         }
+           _universal = Object.values(_fields).filter(function (field) {
+             return field.universal;
+           }); // Reset all the preset fields - they'll need to be resolved again
 
-         return false;
-       }
-       function utilPrefixCSSProperty(property) {
-         var prefixes = ['webkit', 'ms', 'Moz', 'O'];
-         var i = -1;
-         var n = prefixes.length;
-         var s = document.body.style;
+           Object.values(_presets).forEach(function (preset) {
+             return preset.resetFields();
+           }); // Rebuild geometry index
 
-         if (property.toLowerCase() in s) {
-           return property.toLowerCase();
-         }
+           _geometryIndex = {
+             point: {},
+             vertex: {},
+             line: {},
+             area: {},
+             relation: {}
+           };
 
-         while (++i < n) {
-           if (prefixes[i] + property in s) {
-             return '-' + prefixes[i].toLowerCase() + property.replace(/([A-Z])/g, '-$1').toLowerCase();
-           }
-         }
+           _this.collection.forEach(function (preset) {
+             (preset.geometry || []).forEach(function (geometry) {
+               var g = _geometryIndex[geometry];
 
-         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.
+               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
 
-       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;
 
-         for (i = 0; i <= b.length; i++) {
-           matrix[i] = [i];
-         }
+           if (d.featureCollection && Array.isArray(d.featureCollection.features)) {
+             _mainLocations.mergeCustomGeoJSON(d.featureCollection);
+           } // Resolve all locationSet features.
 
-         for (j = 0; j <= a.length; j++) {
-           matrix[0][j] = j;
-         }
 
-         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
-             }
+           if (newLocationSets.length) {
+             _mainLocations.mergeLocationSets(newLocationSets);
            }
-         }
-
-         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];
+           return _this;
          };
-       }
-       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;
-         }
+         _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
 
-         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 (geometry === 'vertex' && entity.isOnAddressLine(resolver)) {
+               geometry = 'point';
+             }
 
-       function utilFunctor(value) {
-         if (typeof value === 'function') return value;
-         return function () {
-           return value;
+             var entityExtent = entity.extent(resolver);
+             return _this.matchTags(entity.tags, geometry, entityExtent.center());
+           });
          };
-       }
-       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;
+         _this.matchTags = function (tags, geometry, loc) {
+           var keyIndex = _geometryIndex[geometry];
+           var bestScore = -1;
+           var bestMatch;
+           var matchCandidates = [];
 
-         if (str.length === 0) {
-           return hash;
-         }
+           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);
 
-         for (var i = 0; i < str.length; i++) {
-           var _char = str.charCodeAt(i);
+               if (score === -1) {
+                 continue;
+               }
 
-           hash = (hash << 5) - hash + _char;
-           hash = hash & hash; // Convert to 32bit integer
-         }
+               matchCandidates.push({
+                 score: score,
+                 candidate: candidate
+               });
 
-         return hash;
-       } // Returns version of `str` with all runs of special characters replaced by `_`;
-       // suitable for HTML ids, classes, selectors, etc.
+               if (score > bestScore) {
+                 bestScore = score;
+                 bestMatch = candidate;
+               }
+             }
+           }
 
-       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 (bestMatch && bestMatch.locationSetID && bestMatch.locationSetID !== '+[Q2]' && Array.isArray(loc)) {
+             var validLocations = _mainLocations.locationsAt(loc);
 
-       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.
+             if (!validLocations[bestMatch.locationSetID]) {
+               matchCandidates.sort(function (a, b) {
+                 return a.score < b.score ? 1 : -1;
+               });
 
-       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.
+               for (var _i = 0; _i < matchCandidates.length; _i++) {
+                 var candidateScore = matchCandidates[_i];
 
-       function utilUnicodeCharsTruncated(str, limit) {
-         return Array.from(str).slice(0, limit).join('');
-       } // Variation of d3.json (https://github.com/d3/d3-fetch/blob/master/src/json.js)
+                 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
 
-       function utilFetchJson(resourse, init) {
-         return fetch(resourse, init).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;
-           return response.json();
-         });
-       }
 
-       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).
+           if (!bestMatch || bestMatch.isFallback()) {
+             for (var _k in tags) {
+               if (/^addr:/.test(_k) && keyIndex['addr:*'] && keyIndex['addr:*']['*']) {
+                 bestMatch = keyIndex['addr:*']['*'][0];
+                 break;
+               }
+             }
+           }
 
+           return bestMatch || _this.fallback(geometry);
+         };
 
-         return new osmEntity().initialize(arguments);
-       }
+         _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
 
-       osmEntity.id = function (type) {
-         return osmEntity.id.fromOSM(type, osmEntity.id.next[type]--);
-       };
+             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.
 
-       osmEntity.id.next = {
-         changeset: -1,
-         node: -1,
-         way: -1,
-         relation: -1
-       };
 
-       osmEntity.id.fromOSM = function (type, id) {
-         return type[0] + id;
-       };
+         _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
 
-       osmEntity.id.toOSM = function (id) {
-         return id.slice(1);
-       };
+           var presets = _this.collection.filter(function (p) {
+             return !p.suggestion && !p.replacement;
+           }); // keeplist
 
-       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().
 
+           presets.forEach(function (p) {
+             var keys = p.tags && Object.keys(p.tags);
+             var key = keys && keys.length && keys[0]; // pick the first tag
 
-       osmEntity.key = function (entity) {
-         return entity.id + 'v' + (entity.v || 0);
-       };
+             if (!key) return;
+             if (ignore.indexOf(key) !== -1) return;
 
-       var _deprecatedTagValuesByKey;
+             if (p.geometry.indexOf('area') !== -1) {
+               // probably an area..
+               areaKeys[key] = areaKeys[key] || {};
+             }
+           }); // discardlist
 
-       osmEntity.deprecatedTagValuesByKey = function (dataDeprecated) {
-         if (!_deprecatedTagValuesByKey) {
-           _deprecatedTagValuesByKey = {};
-           dataDeprecated.forEach(function (d) {
-             var oldKeys = Object.keys(d.old);
+           presets.forEach(function (p) {
+             var key;
 
-             if (oldKeys.length === 1) {
-               var oldKey = oldKeys[0];
-               var oldValue = d.old[oldKey];
+             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 (oldValue !== '*') {
-                 if (!_deprecatedTagValuesByKey[oldKey]) {
-                   _deprecatedTagValuesByKey[oldKey] = [oldValue];
-                 } else {
-                   _deprecatedTagValuesByKey[oldKey].push(oldValue);
-                 }
+               if (key in areaKeys && // probably an area...
+               p.geometry.indexOf('line') !== -1 && // but sometimes a line
+               value !== '*') {
+                 areaKeys[key][value] = true;
                }
              }
            });
-         }
+           return areaKeys;
+         };
 
-         return _deprecatedTagValuesByKey;
-       };
+         _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
 
-       osmEntity.prototype = {
-         tags: {},
-         initialize: function initialize(sources) {
-           for (var i = 0; i < sources.length; ++i) {
-             var source = sources[i];
+             var keys = d.tags && Object.keys(d.tags);
+             var key = keys && keys.length && keys[0]; // pick the first tag
 
-             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 (!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;
              }
-           }
 
-           if (!this.id && this.type) {
-             this.id = osmEntity.id(this.type);
-           }
+             return pointTags;
+           }, {});
+         };
 
-           if (!this.hasOwnProperty('visible')) {
-             this.visible = true;
-           }
+         _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
 
-           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);
-           }
+             var keys = d.tags && Object.keys(d.tags);
+             var key = keys && keys.length && keys[0]; // pick the first tag
 
-           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
+             if (!key) return vertexTags; // if this can be a vertex
 
-           var changed = false;
+             if (d.geometry.indexOf('vertex') !== -1) {
+               vertexTags[key] = vertexTags[key] || {};
+               vertexTags[key][d.tags[key]] = true;
+             }
 
-           for (var k in tags) {
-             var t1 = merged[k];
-             var t2 = tags[k];
+             return vertexTags;
+           }, {});
+         };
 
-             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()
-               );
-             }
-           }
+         _this.field = function (id) {
+           return _fields[id];
+         };
 
-           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;
-         },
-         isDegenerate: function isDegenerate() {
-           return true;
-         },
-         deprecatedTags: function deprecatedTags(dataDeprecated) {
-           var tags = this.tags; // if there are no tags, none can be deprecated
+         _this.universal = function () {
+           return _universal;
+         };
 
-           if (Object.keys(tags).length === 0) return [];
-           var deprecated = [];
-           dataDeprecated.forEach(function (d) {
-             var oldKeys = Object.keys(d.old);
+         _this.defaults = function (geometry, n, startWithRecents, loc) {
+           var recents = [];
 
-             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 (startWithRecents) {
+             recents = _this.recent().matchGeometry(geometry).collection.slice(0, 4);
+           }
 
-               if (hasExistingValues) return;
-             }
+           var defaults;
 
-             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 (_addablePresetIDs) {
+             defaults = Array.from(_addablePresetIDs).map(function (id) {
+               var preset = _this.item(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;
-                   }
-                 }
-               }
+               if (preset && preset.matchGeometry(geometry)) return preset;
+               return null;
+             }).filter(Boolean);
+           } else {
+             defaults = _defaults[geometry].collection.concat(_this.fallback(geometry));
+           }
 
-               return false;
+           var result = presetCollection(utilArrayUniq(recents.concat(defaults)).slice(0, n - 1));
+
+           if (Array.isArray(loc)) {
+             var validLocations = _mainLocations.locationsAt(loc);
+             result.collection = result.collection.filter(function (a) {
+               return !a.locationSetID || validLocations[a.locationSetID];
              });
+           }
 
-             if (matchesDeprecatedTags) {
-               deprecated.push(d);
-             }
-           });
-           return deprecated;
-         }
-       };
+           return result;
+         }; // pass a Set of addable preset ids
 
-       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
+         _this.addablePresetIDs = function (val) {
+           if (!arguments.length) return _addablePresetIDs; // accept and convert arrays
 
-         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
-         };
-       }
+           if (Array.isArray(val)) val = new Set(val);
+           _addablePresetIDs = val;
 
-       function getLaneCount(tags, isOneWay) {
-         var count;
+           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);
+             });
+           }
 
-         if (tags.lanes) {
-           count = parseInt(tags.lanes, 10);
+           return _this;
+         };
 
-           if (count > 0) {
-             return count;
-           }
-         }
+         _this.recent = function () {
+           return presetCollection(utilArrayUniq(_this.getRecents().map(function (d) {
+             return d.preset;
+           })));
+         };
 
-         switch (tags.highway) {
-           case 'trunk':
-           case 'motorway':
-             count = isOneWay ? 2 : 4;
-             break;
+         function RibbonItem(preset, source) {
+           var item = {};
+           item.preset = preset;
+           item.source = source;
 
-           default:
-             count = isOneWay ? 1 : 2;
-             break;
-         }
+           item.isFavorite = function () {
+             return item.source === 'favorite';
+           };
 
-         return count;
-       }
+           item.isRecent = function () {
+             return item.source === 'recent';
+           };
 
-       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);
-       }
+           item.matches = function (preset) {
+             return item.preset.id === preset.id;
+           };
 
-       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;
+           item.minified = function () {
+             return {
+               pID: item.preset.id
+             };
+           };
 
-         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;
-           }
+           return item;
+         }
 
-           forward = laneCount - bothways - backward;
-         } else if (isNaN(backward)) {
-           if (forward > laneCount - bothways) {
-             forward = laneCount - bothways;
+         function ribbonItemForMinified(d, source) {
+           if (d && d.pID) {
+             var preset = _this.item(d.pID);
+
+             if (!preset) return null;
+             return RibbonItem(preset, source);
            }
 
-           backward = laneCount - bothways - forward;
+           return null;
          }
 
-         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;
+         _this.getGenericRibbonItems = function () {
+           return ['point', 'line', 'area'].map(function (id) {
+             return RibbonItem(_this.item(id), 'generic');
            });
-         });
-       }
+         };
 
-       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;
-         });
-       }
+         _this.getAddable = function () {
+           if (!_addablePresetIDs) return [];
+           return _addablePresetIDs.map(function (id) {
+             var preset = _this.item(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 (preset) return RibbonItem(preset, 'addable');
+             return null;
+           }).filter(Boolean);
+         };
 
-       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;
-         });
-       }
-
-       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;
+         function setRecents(items) {
+           _recents = items;
+           var minifiedItems = items.map(function (d) {
+             return d.minified();
            });
+           corePreferences('preset_recents', JSON.stringify(minifiedItems));
+           dispatch.call('recentsChange');
          }
 
-         if (data.unspecified) {
-           data.unspecified.forEach(function (l, i) {
-             if (!lanesObj.unspecified[i]) lanesObj.unspecified[i] = {};
-             lanesObj.unspecified[i][key] = l;
-           });
-         }
-       }
+         _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;
+             }, []);
+           }
 
-       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();
+           return _recents;
+         };
 
-             for (var i = 0; i < this.nodes.length; i++) {
-               var node = resolver.hasEntity(this.nodes[i]);
+         _this.addRecent = function (preset, besidePreset, after) {
+           var recents = _this.getRecents();
 
-               if (node) {
-                 extent._extend(node.extent());
-               }
-             }
+           var beforeItem = _this.recentMatching(besidePreset);
 
-             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..
+           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 (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
-             }
-           };
+           if (item) {
+             var items = _this.getRecents();
 
-           for (var key in averageWidths) {
-             if (this.tags[key] && averageWidths[key][this.tags[key]]) {
-               var width = averageWidths[key][this.tags[key]];
+             items.splice(items.indexOf(item), 1);
+             setRecents(items);
+           }
+         };
 
-               if (key === 'highway') {
-                 var laneCount = this.tags.lanes && parseInt(this.tags.lanes, 10);
-                 if (!laneCount) laneCount = this.isOneWay() ? 1 : 2;
-                 return width * laneCount;
-               }
+         _this.recentMatching = function (preset) {
+           var items = _this.getRecents();
 
-               return width;
+           for (var i in items) {
+             if (items[i].matches(preset)) {
+               return items[i];
              }
            }
 
            return null;
-         },
-         isOneWay: function isOneWay() {
-           // explicit oneway tag..
-           var values = {
-             'yes': true,
-             '1': true,
-             '-1': true,
-             'reversible': true,
-             'alternating': true,
-             'no': false,
-             '0': false
-           };
-
-           if (values[this.tags.oneway] !== undefined) {
-             return values[this.tags.oneway];
-           } // implied oneway tag..
-
-
-           for (var key in this.tags) {
-             if (key in osmOneWayTags && this.tags[key] in osmOneWayTags[key]) {
-               return true;
-             }
-           }
+         };
 
-           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];
+         _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;
+         };
 
-             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];
-               }
-             }
-           }
+         _this.moveRecent = function (item, beforeItem) {
+           var recents = _this.getRecents();
 
-           return null;
-         },
-         isSided: function isSided() {
-           if (this.tags.two_sided === 'yes') {
-             return false;
-           }
+           var fromIndex = recents.indexOf(item);
+           var toIndex = recents.indexOf(beforeItem);
 
-           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;
+           var items = _this.moveItem(recents, fromIndex, toIndex);
 
-           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 (items) setRecents(items);
+         };
 
-             if (curr === 0) {
-               continue;
-             } else if (prev && curr !== prev) {
-               return false;
-             }
+         _this.setMostRecent = function (preset) {
+           if (preset.searchable === false) return;
 
-             prev = curr;
-           }
+           var items = _this.getRecents();
 
-           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;
-             }
-           }
+           var item = _this.recentMatching(preset);
 
-           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 (item) {
+             items.splice(items.indexOf(item), 1);
+           } else {
+             item = RibbonItem(preset, 'recent');
+           } // remove the last recent (first in, first out)
 
-           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
-               });
-             }
+           while (items.length >= MAXRECENTS) {
+             items.pop();
+           } // prepend array
 
-             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;
-           }
+           items.unshift(item);
+           setRecents(items);
+         };
 
-           nodes = nodes.filter(noRepeatNodes);
-           return this.update({
-             nodes: nodes
+         function setFavorites(items) {
+           _favorites = items;
+           var minifiedItems = items.map(function (d) {
+             return d.minified();
            });
-         },
-         // 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;
-
-           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..
+           corePreferences('preset_favorites', JSON.stringify(minifiedItems)); // call update
 
+           dispatch.call('favoritePreset');
+         }
 
-           if (isClosed) {
-             var connector = this.first(); // leading connectors..
+         _this.addFavorite = function (preset, besidePreset, after) {
+           var favorites = _this.getFavorites();
 
-             var i = 1;
+           var beforeItem = _this.favoriteMatching(besidePreset);
 
-             while (i < nodes.length && nodes.length > 2 && nodes[i] === connector) {
-               nodes.splice(i, 1);
-               if (index > i) index--;
-             } // trailing connectors..
+           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();
 
-             i = nodes.length - 1;
+           var favorite = _this.favoriteMatching(preset);
 
-             while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
-               nodes.splice(i, 1);
-               if (index > i) index--;
-               i = nodes.length - 1;
-             }
-           }
+           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
 
-           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]);
+             favs.push(RibbonItem(preset, 'favorite'));
            }
 
-           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;
+           setFavorites(favs);
+         };
 
-           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..
+         _this.removeFavorite = function (preset) {
+           var item = _this.favoriteMatching(preset);
 
+           if (item) {
+             var items = _this.getFavorites();
 
-           if (isClosed) {
-             var connector = this.first(); // leading connectors..
+             items.splice(items.indexOf(item), 1);
+             setFavorites(items);
+           }
+         };
 
-             var i = 1;
+         _this.getFavorites = function () {
+           if (!_favorites) {
+             // fetch from local storage
+             var rawFavorites = JSON.parse(corePreferences('preset_favorites'));
 
-             while (i < nodes.length && nodes.length > 2 && nodes[i] === connector) {
-               nodes.splice(i, 1);
-               if (index > i) index--;
-             } // trailing connectors..
+             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;
+             }, []);
+           }
 
-             i = nodes.length - 1;
+           return _favorites;
+         };
 
-             while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
-               nodes.splice(i, 1);
-               if (index === i) index = 0; // update leading connector instead
+         _this.favoriteMatching = function (preset) {
+           var favs = _this.getFavorites();
 
-               i = nodes.length - 1;
+           for (var index in favs) {
+             if (favs[index].matches(preset)) {
+               return favs[index];
              }
            }
 
-           nodes.splice(index, 1, id);
-           nodes = nodes.filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..
+           return null;
+         };
 
-           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
-             nodes.push(nodes[0]);
-           }
+         return utilRebind(_this, dispatch, 'on');
+       }
 
-           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;
-             }
-           }
+       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;
 
-           nodes = nodes.filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..
+         for (var i = 0; i < array.length; i++) {
+           val = array[i];
+           entity = typeof val === 'string' ? graph.hasEntity(val) : val;
 
-           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
-             nodes.push(nodes[0]);
+           if (entity) {
+             extent._extend(entity.extent(graph));
            }
+         }
 
-           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..
+         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 (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
-             nodes.push(nodes[0]);
+           if ((oldVal || oldVal === '') && (newVal === undefined || newVal !== oldVal)) {
+             tagDiff.push({
+               type: '-',
+               key: k,
+               oldVal: oldVal,
+               newVal: newVal,
+               display: '- ' + k + '=' + oldVal
+             });
            }
 
-           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)
-             }
-           };
-
-           if (changeset_id) {
-             r.way['@changeset'] = changeset_id;
+           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
 
-           return r;
-         },
-         asGeoJSON: function asGeoJSON(resolver) {
-           return resolver["transient"](this, 'GeoJSON', function () {
-             var coordinates = resolver.childNodes(this).map(function (n) {
-               return n.loc;
-             });
+       function utilEntityOrMemberSelector(ids, graph) {
+         var seen = new Set(ids);
+         ids.forEach(collectShallowDescendants);
+         return utilEntitySelector(Array.from(seen));
 
-             if (this.isArea() && this.isClosed()) {
-               return {
-                 type: 'Polygon',
-                 coordinates: [coordinates]
-               };
-             } else {
-               return {
-                 type: 'LineString',
-                 coordinates: coordinates
-               };
-             }
+         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);
            });
-         },
-         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;
-               })]
-             };
-
-             if (!this.isClosed() && nodes.length) {
-               json.coordinates[0].push(nodes[0].loc);
-             }
+         }
+       } // returns an selector to select entity ids for:
+       //  - entityIDs passed in
+       //  - deep descendant entityIDs for any of those entities that are relations
 
-             var area = d3_geoArea(json); // Heuristic for detecting counterclockwise winding order. Assumes
-             // that OpenStreetMap polygons are not hemisphere-spanning.
+       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
 
-             if (area > 2 * Math.PI) {
-               json.coordinates[0] = json.coordinates[0].reverse();
-               area = d3_geoArea(json);
-             }
+       function utilEntityAndDeepMemberIDs(ids, graph) {
+         var seen = new Set();
+         ids.forEach(collectDeepDescendants);
+         return Array.from(seen);
 
-             return isNaN(area) ? 0 : area;
-           });
+         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
          }
-       }); // Filter function to eliminate consecutive duplicates.
+       } // returns an selector to select entity ids for:
+       //  - deep descendant entityIDs for any of those entities that are relations
 
-       function noRepeatNodes(node, i, arr) {
-         return i === 0 || node !== arr[i - 1];
-       }
+       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));
 
-       //
-       // 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 collectDeepDescendants(id) {
+           if (seen.has(id)) return;
+           seen.add(id);
 
-       function osmOldMultipolygonOuterMemberOfRelation(entity, graph) {
-         if (entity.type !== 'relation' || !entity.isMultipolygon() || Object.keys(entity.tags).filter(osmIsInterestingTag).length > 1) {
-           return false;
+           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
          }
+       } // Adds or removes highlight styling for the specified entities
 
-         var outerMember;
+       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
 
-         for (var memberIndex in entity.members) {
-           var member = entity.members[memberIndex];
+       function utilGetAllNodes(ids, graph) {
+         var seen = new Set();
+         var nodes = new Set();
+         ids.forEach(collectNodes);
+         return Array.from(nodes);
 
-           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);
+         function collectNodes(id) {
+           if (seen.has(id)) return;
+           seen.add(id);
+           var entity = graph.hasEntity(id);
+           if (!entity) return;
 
-             if (Object.keys(outerMember.tags).filter(osmIsInterestingTag).length === 0) {
-               return false;
-             }
+           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
            }
          }
+       }
+       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 = [];
 
-         return outerMember;
-       } // For fixing up rendering of multipolygons with tags on the outer member.
-       // https://github.com/openstreetmap/iD/issues/613
-
-       function osmIsOldMultipolygonOuterMember(entity, graph) {
-         if (entity.type !== 'way' || Object.keys(entity.tags).filter(osmIsInterestingTag).length === 0) {
-           return false;
+         if (tags.network) {
+           keyComponents.push('network');
          }
 
-         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;
-         }
+         if (tags.ref) {
+           keyComponents.push('ref');
+         } // Routes may need more disambiguation based on direction or destination
 
-         var members = parent.members,
-             member;
 
-         for (var i = 0; i < members.length; i++) {
-           member = members[i];
+         if (entity.tags.route) {
+           if (tags.direction) {
+             keyComponents.push('direction');
+           } else if (tags.from && tags.to) {
+             keyComponents.push('from');
+             keyComponents.push('to');
 
-           if (member.id === entity.id && member.role && member.role !== 'outer') {
-             // Not outer member
-             return false;
+             if (tags.via) {
+               keyComponents.push('via');
+             }
            }
+         }
 
-           if (member.id !== entity.id && (!member.role || member.role === 'outer')) {
-             // Not a simple multipolygon
-             return false;
-           }
+         if (keyComponents.length) {
+           name = _t('inspector.display_name.' + keyComponents.join('_'), tags);
          }
 
-         return parent;
+         return name;
        }
-       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];
+       function utilDisplayNameForPath(entity) {
+         var name = utilDisplayName(entity);
+         var isFirefox = utilDetect().browser.toLowerCase().indexOf('firefox') > -1;
+         var isNewChromium = Number(utilDetect().version.split('.')[0]) >= 96.0;
 
-         if (!parent.isMultipolygon() || Object.keys(parent.tags).filter(osmIsInterestingTag).length > 1) {
-           return false;
+         if (!isFirefox && !isNewChromium && name && rtlRegex.test(name)) {
+           name = fixRTLTextForSvg(name);
          }
 
-         var members = parent.members,
-             member,
-             outerMember;
+         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"
+       //
 
-         for (var i = 0; i < members.length; i++) {
-           member = members[i];
+       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());
 
-           if (!member.role || member.role === 'outer') {
-             if (outerMember) return false; // Not a simple multipolygon
+         if (verbose) {
+           result = [presetName, displayName].filter(Boolean).join(' ');
+         } else {
+           result = displayName || presetName;
+         } // Fallback to the OSM type (node/way/relation)
 
-             outerMember = member;
-           }
-         }
 
-         if (!outerMember) return false;
-         var outerEntity = graph.hasEntity(outerMember.id);
+         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 ]
+       // }
 
-         if (!outerEntity || !Object.keys(outerEntity.tags).filter(osmIsInterestingTag).length) {
-           return false;
-         }
+       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
 
-         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.
-       //
+         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`
 
-       function osmJoinWays(toJoin, graph) {
-         function resolve(member) {
-           return graph.childNodes(graph.entity(member.id));
-         }
+             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 reverse(item) {
-           var action = actionReverse(item.id, {
-             reverseOneway: true
+             var tagHash = key + '=' + value;
+             if (!tagCounts[tagHash]) tagCounts[tagHash] = 0;
+             tagCounts[tagHash] += 1;
            });
-           sequences.actions.push(action);
-           return item instanceof osmWay ? action(graph).entity(item.id) : item;
-         } // make a copy containing only the items to join
+         });
 
+         for (var key in tags) {
+           if (!Array.isArray(tags[key])) continue; // sort values by frequency then alphabetically
 
-         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)
+           tags[key] = tags[key].sort(function (val1, val2) {
+             var key = key; // capture
 
-         var i;
-         var joinAsMembers = true;
+             var count2 = tagCounts[key + '=' + val2];
+             var count1 = tagCounts[key + '=' + val1];
 
-         for (i = 0; i < toJoin.length; i++) {
-           if (toJoin[i] instanceof osmWay) {
-             joinAsMembers = false;
-             break;
-           }
-         }
+             if (count2 !== count1) {
+               return count2 - count1;
+             }
 
-         var sequences = [];
-         sequences.actions = [];
+             if (val2 && val1) {
+               return val1.localeCompare(val2);
+             }
 
-         while (toJoin.length) {
-           // start a new sequence
-           var item = toJoin.shift();
-           var currWays = [item];
-           var currNodes = resolve(item).slice(); // add to it
+             return val1 ? 1 : -1;
+           });
+         }
 
-           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.
+         return tags;
+       }
+       function utilStringQs(str) {
+         var i = 0; // advance past any leading '?' or '#' characters
 
-             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.
+         while (i < str.length && (str[i] === '?' || str[i] === '#')) {
+           i++;
+         }
 
-               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];
-               }
-
-               if (nodes[0] === end) {
-                 fn = currNodes.push; // join to end
-
-                 nodes = nodes.slice(1);
-                 break;
-               } else if (nodes[nodes.length - 1] === end) {
-                 fn = currNodes.push; // join to end
-
-                 nodes = nodes.slice(0, -1).reverse();
-                 item = reverse(item);
-                 break;
-               } else if (nodes[nodes.length - 1] === start) {
-                 fn = currNodes.unshift; // join to beginning
-
-                 nodes = nodes.slice(0, -1);
-                 break;
-               } else if (nodes[0] === start) {
-                 fn = currNodes.unshift; // join to beginning
-
-                 nodes = nodes.slice(1).reverse();
-                 item = reverse(item);
-                 break;
-               } else {
-                 fn = nodes = null;
-               }
-             }
-
-             if (!nodes) {
-               // couldn't find a joinable way/member
-               break;
-             }
+         str = str.slice(i);
+         return str.split('&').reduce(function (obj, pair) {
+           var parts = pair.split('=');
 
-             fn.apply(currWays, [item]);
-             fn.apply(currNodes, nodes);
-             toJoin.splice(i, 1);
+           if (parts.length === 2) {
+             obj[parts[0]] = null === parts[1] ? '' : decodeURIComponent(parts[1]);
            }
 
-           currWays.nodes = currNodes;
-           sequences.push(currWays);
+           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);
          }
 
-         return sequences;
+         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 actionAddMember(relationId, member, memberIndex, insertPair) {
-         return function action(graph) {
-           var relation = graph.entity(relationId); // There are some special rules for Public Transport v2 routes.
+         while (++i < n) {
+           if (prefixes[i] + property in s) {
+             return prefixes[i] + property;
+           }
+         }
 
-           var isPTv2 = /stop|platform/.test(member.role);
+         return false;
+       }
+       function utilPrefixCSSProperty(property) {
+         var prefixes = ['webkit', 'ms', 'Moz', 'O'];
+         var i = -1;
+         var n = prefixes.length;
+         var s = document.body.style;
 
-           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 (property.toLowerCase() in s) {
+           return property.toLowerCase();
+         }
 
-             graph = graph.replace(relation.addMember(member, memberIndex));
+         while (++i < n) {
+           if (prefixes[i] + property in s) {
+             return '-' + prefixes[i].toLowerCase() + property.replace(/([A-Z])/g, '-$1').toLowerCase();
            }
+         }
 
-           return graph;
-         }; // Add a way member into the relation "wherever it makes sense".
-         // In this situation we were not supplied a memberIndex.
+         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 addWayMember(relation, graph) {
-           var groups, tempWay, item, i, j, k; // remove PTv2 stops and platforms before doing anything.
+       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;
 
-           var PTv2members = [];
-           var members = [];
+         for (i = 0; i <= b.length; i++) {
+           matrix[i] = [i];
+         }
 
-           for (i = 0; i < relation.members.length; i++) {
-             var m = relation.members[i];
+         for (j = 0; j <= a.length; j++) {
+           matrix[0][j] = j;
+         }
 
-             if (/stop|platform/.test(m.role)) {
-               PTv2members.push(m);
+         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 {
-               members.push(m);
+               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
              }
            }
+         }
 
-           relation = relation.update({
-             members: members
+         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]
 
-           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);
-           }
+       function utilWrap(index, length) {
+         if (index < 0) {
+           index += Math.ceil(-index / length) * length;
+         }
 
-           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
+         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
+        */
 
-           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
+       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/
 
-             for (j = 0; j < members.length; j++) {
-               if (members[j].index === startIndex) {
-                 break;
-               }
-             } // k = each member in segment
+       function utilHashcode(str) {
+         var hash = 0;
 
+         if (str.length === 0) {
+           return hash;
+         }
 
-             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 = 0; i < str.length; i++) {
+           var _char = str.charCodeAt(i);
 
-               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
+           hash = (hash << 5) - hash + _char;
+           hash = hash & hash; // Convert to 32bit integer
+         }
 
+         return hash;
+       } // Returns version of `str` with all runs of special characters replaced by `_`;
+       // suitable for HTML ids, classes, selectors, etc.
 
-               if (k > 0) {
-                 if (j + k >= members.length || item.index !== members[j + k].index) {
-                   moveMember(members, item.index, j + k);
-                 }
-               }
+       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.
 
-               nodes.splice(0, way.nodes.length - 1);
-             }
-           }
+       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.
 
-           if (tempWay) {
-             graph = graph.remove(tempWay);
-           } // Final pass: skip dead items, split pairs, remove index properties
+       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('');
+       }
 
-           var wayMembers = [];
+       function toNumericID(id) {
+         var match = id.match(/^[cnwr](-?\d+)$/);
 
-           for (i = 0; i < members.length; i++) {
-             item = members[i];
-             if (item.index === -1) continue;
+         if (match) {
+           return parseInt(match[1], 10);
+         }
 
-             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
+         return NaN;
+       }
 
+       function compareNumericIDs(left, right) {
+         if (isNaN(left) && isNaN(right)) return -1;
+         if (isNaN(left)) return 1;
+         if (isNaN(right)) return -1;
+         if (Math.sign(left) !== Math.sign(right)) return -Math.sign(left);
+         if (Math.sign(left) < 0) return Math.sign(right - left);
+         return Math.sign(left - right);
+       } // Returns -1 if the first parameter ID is older than the second,
+       // 1 if the second parameter is older, 0 if they are the same.
+       // If both IDs are test IDs, the function returns -1.
 
-           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 moveMember(arr, findIndex, toIndex) {
-             var i;
+       function utilCompareIDs(left, right) {
+         return compareNumericIDs(toNumericID(left), toNumericID(right));
+       } // Returns the chronologically oldest ID in the list.
+       // Database IDs (with positive numbers) before editor ones (with negative numbers).
+       // Among each category, the closest number to 0 is the oldest.
+       // Test IDs (any string that does not conform to OSM's ID scheme) are taken last.
 
-             for (i = 0; i < arr.length; i++) {
-               if (arr[i].index === findIndex) {
-                 break;
-               }
-             }
+       function utilOldestID(ids) {
+         if (ids.length === 0) {
+           return undefined;
+         }
 
-             var item = Object.assign({}, arr[i]); // shallow copy
+         var oldestIDIndex = 0;
+         var oldestID = toNumericID(ids[0]);
 
-             arr[i].index = -1; // mark as dead
+         for (var i = 1; i < ids.length; i++) {
+           var num = toNumericID(ids[i]);
 
-             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
+           if (compareNumericIDs(oldestID, num) === 1) {
+             oldestIDIndex = i;
+             oldestID = num;
+           }
+         }
 
+         return ids[oldestIDIndex];
+       }
 
-           function withIndex(arr) {
-             var result = new Array(arr.length);
+       function osmEntity(attrs) {
+         // For prototypal inheritance.
+         if (this instanceof osmEntity) return; // Create the appropriate subtype.
 
-             for (var i = 0; i < arr.length; i++) {
-               result[i] = Object.assign({}, arr[i]); // shallow copy
+         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).
 
-               result[i].index = i;
-             }
 
-             return result;
-           }
-         }
+         return new osmEntity().initialize(arguments);
        }
 
-       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.
+       osmEntity.id = function (type) {
+         return osmEntity.id.fromOSM(type, osmEntity.id.next[type]--);
+       };
 
-                 return;
-               }
-             }
-           });
-           return graph;
-         };
-       }
+       osmEntity.id.next = {
+         changeset: -1,
+         node: -1,
+         way: -1,
+         relation: -1
+       };
 
-       // 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));
-         };
-       }
+       osmEntity.id.fromOSM = function (type, id) {
+         return type[0] + id;
+       };
 
-       function actionChangeMember(relationId, member, memberIndex) {
-         return function (graph) {
-           return graph.replace(graph.entity(relationId).updateMember(member, memberIndex));
-         };
-       }
+       osmEntity.id.toOSM = function (id) {
+         var match = id.match(/^[cnwr](-?\d+)$/);
 
-       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
+         if (match) {
+           return match[1];
+         }
 
-           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
-           }));
-         };
-       }
+         return '';
+       };
 
-       function actionChangeTags(entityId, tags) {
-         return function (graph) {
-           var entity = graph.entity(entityId);
-           return graph.replace(entity.update({
-             tags: tags
-           }));
-         };
-       }
+       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().
 
-       function osmNode() {
-         if (!(this instanceof osmNode)) {
-           return new osmNode().initialize(arguments);
-         } else if (arguments.length) {
-           this.initialize(arguments);
-         }
-       }
-       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
+       osmEntity.key = function (entity) {
+         return entity.id + 'v' + (entity.v || 0);
+       };
 
-             var re = /:direction$/i;
-             var keys = Object.keys(this.tags);
+       var _deprecatedTagValuesByKey;
 
-             for (i = 0; i < keys.length; i++) {
-               if (re.test(keys[i])) {
-                 val = this.tags[keys[i]].toLowerCase();
-                 break;
+       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);
+                 }
                }
              }
-           }
+           });
+         }
 
-           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
+         return _deprecatedTagValuesByKey;
+       };
 
+       osmEntity.prototype = {
+         tags: {},
+         initialize: function initialize(sources) {
+           for (var i = 0; i < sources.length; ++i) {
+             var source = sources[i];
 
-             if (v !== '' && !isNaN(+v)) {
-               results.push(+v);
-               return;
-             } // string direction - inspect parent ways
+             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);
+           }
 
-             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;
+           if (!this.hasOwnProperty('visible')) {
+             this.visible = true;
+           }
 
-               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
-                   }
+           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);
+           }
 
-                   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);
+           return this;
          },
-         isCrossing: function isCrossing() {
-           return this.tags.highway === 'crossing' || this.tags.railway && this.tags.railway.indexOf('crossing') !== -1;
+         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;
          },
-         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;
+         osmId: function osmId() {
+           return osmEntity.id.toOSM(this.id);
+         },
+         isNew: function isNew() {
+           var osmId = osmEntity.id.toOSM(this.id);
+           return osmId.length === 0 || osmId[0] === '-';
+         },
+         update: function update(attrs) {
+           return osmEntity(this, attrs, {
+             v: 1 + (this.v || 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();
+         mergeTags: function mergeTags(tags) {
+           var merged = Object.assign({}, this.tags); // shallow copy
 
-               if (way.isClosed()) {
-                 nodes.pop();
-               } // ignore connecting node if closed
-               // return true if vertex appears multiple times (way is self intersecting)
+           var changed = false;
 
+           for (var k in tags) {
+             var t1 = merged[k];
+             var t2 = tags[k];
 
-               return nodes.indexOf(this.id) !== nodes.lastIndexOf(this.id);
+             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 false;
-           });
+           return changed ? this.update({
+             tags: merged
+           }) : this;
          },
-         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';
-             });
+         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';
            });
          },
-         isIntersection: function isIntersection(resolver) {
-           return this.parentIntersectionWays(resolver).length > 1;
+         hasParentRelations: function hasParentRelations(resolver) {
+           return resolver.parentRelations(this).length > 0;
          },
-         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;
-           });
+         hasInterestingTags: function hasInterestingTags() {
+           return Object.keys(this.tags).some(osmIsInterestingTag);
          },
-         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;
-           });
+         isHighwayIntersection: function isHighwayIntersection() {
+           return false;
          },
-         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;
+         isDegenerate: function isDegenerate() {
+           return true;
          },
-         asGeoJSON: function asGeoJSON() {
-           return {
-             type: 'Point',
-             coordinates: this.loc
-           };
-         }
-       });
-
-       function actionCircularize(wayId, projection, maxAngle) {
-         maxAngle = (maxAngle || 20) * Math.PI / 180;
+         deprecatedTags: function deprecatedTags(dataDeprecated) {
+           var tags = this.tags; // if there are no tags, none can be deprecated
 
-         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 (Object.keys(tags).length === 0) return [];
+           var deprecated = [];
+           dataDeprecated.forEach(function (d) {
+             var oldKeys = Object.keys(d.old);
 
-           if (!way.isConvex(graph)) {
-             graph = action.makeConvex(graph);
-           }
+             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
 
-           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 (hasExistingValues) return;
+             }
 
-           if (!keyNodes.length) {
-             keyNodes = [nodes[0]];
-             keyPoints = [points[0]];
-           }
+             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 (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.
+               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;
+             });
 
-           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;
+             if (matchesDeprecatedTags) {
+               deprecated.push(d);
+             }
+           });
+           return deprecated;
+         }
+       };
 
-             if (indexRange < 0) {
-               indexRange += nodes.length;
-             } // position this key node
+       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
 
-             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
+         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
+         };
+       }
 
-             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
+       function getLaneCount(tags, isOneWay) {
+         var count;
 
-             if (totalAngle * sign > 0) {
-               totalAngle = -sign * (2 * Math.PI - Math.abs(totalAngle));
-             }
+         if (tags.lanes) {
+           count = parseInt(tags.lanes, 10);
 
-             do {
-               numberNewPoints++;
-               eachAngle = totalAngle / (indexRange + numberNewPoints);
-             } while (Math.abs(eachAngle) > maxAngle); // move existing nodes
+           if (count > 0) {
+             return count;
+           }
+         }
 
+         switch (tags.highway) {
+           case 'trunk':
+           case 'motorway':
+             count = isOneWay ? 2 : 4;
+             break;
 
-             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
+           default:
+             count = isOneWay ? 1 : 2;
+             break;
+         }
 
+         return count;
+       }
 
-             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 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);
+       }
 
-               var min = Infinity;
+       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;
 
-               for (var nodeId in nearNodes) {
-                 var nearAngle = nearNodes[nodeId];
-                 var dist = Math.abs(nearAngle - angle);
+         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;
+           }
 
-                 if (dist < min) {
-                   min = dist;
-                   origNode = origNodes[nodeId];
-                 }
-               }
+           forward = laneCount - bothways - backward;
+         } else if (isNaN(backward)) {
+           if (forward > laneCount - bothways) {
+             forward = laneCount - bothways;
+           }
 
-               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..
+           backward = laneCount - bothways - forward;
+         }
 
+         return {
+           forward: forward,
+           backward: backward,
+           bothways: bothways
+         };
+       }
 
-             if (indexRange === 1 && inBetweenNodes.length) {
-               var startIndex1 = way.nodes.lastIndexOf(startNode.id);
-               var endIndex1 = way.nodes.lastIndexOf(endNode.id);
-               var wayDirection1 = endIndex1 - startIndex1;
+       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;
+           });
+         });
+       }
 
-               if (wayDirection1 < -1) {
-                 wayDirection1 = 1;
-               }
+       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;
+         });
+       }
 
-               var parentWays = graph.parentWays(keyNodes[i]);
+       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;
+         });
+       }
 
-               for (j = 0; j < parentWays.length; j++) {
-                 var sharedWay = parentWays[j];
-                 if (sharedWay === way) continue;
+       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;
+         });
+       }
 
-                 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;
+       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 (wayDirection2 < -1) {
-                     wayDirection2 = 1;
-                   }
+         if (data.backward) {
+           data.backward.forEach(function (l, i) {
+             if (!lanesObj.backward[i]) lanesObj.backward[i] = {};
+             lanesObj.backward[i][key] = l;
+           });
+         }
 
-                   if (wayDirection1 !== wayDirection2) {
-                     inBetweenNodes.reverse();
-                     insertAt = startIndex2;
-                   }
+         if (data.unspecified) {
+           data.unspecified.forEach(function (l, i) {
+             if (!lanesObj.unspecified[i]) lanesObj.unspecified[i] = {};
+             lanesObj.unspecified[i][key] = l;
+           });
+         }
+       }
 
-                   for (k = 0; k < inBetweenNodes.length; k++) {
-                     sharedWay = sharedWay.addNode(inBetweenNodes[k], insertAt + k);
-                   }
+       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();
 
-                   graph = graph.replace(sharedWay);
-                 }
+             for (var i = 0; i < this.nodes.length; i++) {
+               var node = resolver.hasEntity(this.nodes[i]);
+
+               if (node) {
+                 extent._extend(node.extent());
                }
              }
-           } // 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;
-         };
-
-         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);
+             return extent;
            });
-           var sign = d3_polygonArea(points) > 0 ? 1 : -1;
-           var hull = d3_polygonHull(points);
-           var i, j; // D3 convex hulls go counterclockwise..
+         },
+         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 (sign === -1) {
-             nodes.reverse();
-             points.reverse();
-           }
 
-           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;
+           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
+             }
+           };
 
-             if (indexRange < 0) {
-               indexRange += nodes.length;
-             } // move interior nodes to the surface of the convex hull..
+           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;
+               }
 
-             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);
+               return width;
              }
            }
 
-           return graph;
-         };
+           return null;
+         },
+         isOneWay: function isOneWay() {
+           // explicit oneway tag..
+           var values = {
+             'yes': true,
+             '1': true,
+             '-1': true,
+             'reversible': true,
+             'alternating': true,
+             'no': false,
+             '0': false
+           };
 
-         action.disabled = function (graph) {
-           if (!graph.entity(wayId).isClosed()) {
-             return 'not_closed';
-           } //disable when already circular
+           if (values[this.tags.oneway] !== undefined) {
+             return values[this.tags.oneway];
+           } // implied oneway tag..
 
 
-           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;
+           for (var key in this.tags) {
+             if (key in osmOneWayTags && this.tags[key] in osmOneWayTags[key]) {
+               return true;
+             }
+           }
 
-           if (hull.length !== points.length || hull.length < 3) {
+           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 (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];
+               }
+             }
+           }
+
+           return null;
+         },
+         isSided: function isSided() {
+           if (this.tags.two_sided === 'yes') {
              return false;
            }
 
-           var centroid = d3_polygonCentroid(points);
-           var radius = geoVecLengthSquare(centroid, points[0]);
-           var i, actualPoint; // compare distances between centroid and points
+           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;
 
-           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%)
+           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 (diff > 0.05 * radius) {
+             if (curr === 0) {
+               continue;
+             } else if (prev && curr !== prev) {
                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;
+             prev = curr;
+           }
 
-             if (angle < 0) {
-               angle = -angle;
+           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 (angle > Math.PI) {
-               angle = 2 * Math.PI - angle;
-             }
+           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 (angle > maxAngle + epsilonAngle) {
-               return false;
+           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 'already_circular';
-         };
+             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..
 
-         action.transitionable = true;
-         return action;
-       }
+           while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
+             nodes.splice(i, 1);
+             i = nodes.length - 1;
+           }
 
-       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
+           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;
 
-           if (geometries.point) return false; // delete if this node only be a vertex
+           if (index === undefined) {
+             index = max;
+           }
 
-           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 (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..
 
-           return !node.hasInterestingTags();
-         }
 
-         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 (isClosed) {
+             var connector = this.first(); // leading connectors..
 
-             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);
+             var i = 1;
 
-             if (canDeleteNode(node, graph)) {
-               graph = graph.remove(node);
-             }
-           });
-           return graph.remove(way);
-         };
+             while (i < nodes.length && nodes.length > 2 && nodes[i] === connector) {
+               nodes.splice(i, 1);
+               if (index > i) index--;
+             } // trailing connectors..
 
-         return action;
-       }
 
-       function actionDeleteMultiple(ids) {
-         var actions = {
-           way: actionDeleteWay,
-           node: actionDeleteNode,
-           relation: actionDeleteRelation
-         };
+             i = nodes.length - 1;
 
-         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);
+             while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
+               nodes.splice(i, 1);
+               if (index > i) index--;
+               i = nodes.length - 1;
              }
-           });
-           return graph;
-         };
+           }
 
-         return action;
-       }
+           nodes.splice(index, 0, id);
+           nodes = nodes.filter(noRepeatNodes); // If the way was closed before, append a connector node to keep it closed..
 
-       function actionDeleteRelation(relationID, allowUntaggedMembers) {
-         function canDeleteEntity(entity, graph) {
-           return !graph.parentWays(entity).length && !graph.parentRelations(entity).length && !entity.hasInterestingTags() && !allowUntaggedMembers;
-         }
+           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
+             nodes.push(nodes[0]);
+           }
 
-         var action = function action(graph) {
-           var relation = graph.entity(relationID);
-           graph.parentRelations(relation).forEach(function (parent) {
-             parent = parent.removeMembersWithID(relationID);
-             graph = graph.replace(parent);
+           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 (parent.isDegenerate()) {
-               graph = actionDeleteRelation(parent.id)(graph);
+           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 (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;
+
+             while (i > 0 && nodes.length > 1 && nodes[i] === connector) {
+               nodes.splice(i, 1);
+               if (index === i) index = 0; // update leading connector instead
+
+               i = nodes.length - 1;
              }
+           }
+
+           nodes.splice(index, 1, 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]);
+           }
+
+           return this.update({
+             nodes: nodes
            });
-           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);
+         },
+         // 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();
 
-             if (canDeleteEntity(entity, graph)) {
-               graph = actionDeleteMultiple([memberID])(graph);
+           for (var i = 0; i < nodes.length; i++) {
+             if (nodes[i] === needleID) {
+               nodes[i] = replacementID;
              }
+           }
+
+           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]);
+           }
+
+           return this.update({
+             nodes: nodes
            });
-           return graph.remove(relation);
-         };
+         },
+         // 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..
 
-         return action;
-       }
+           if (isClosed && (nodes.length === 1 || nodes[0] !== nodes[nodes.length - 1])) {
+             nodes.push(nodes[0]);
+           }
 
-       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);
+           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)
+             }
+           };
 
-             if (parent.isDegenerate()) {
-               graph = actionDeleteWay(parent.id)(graph);
+           if (changeset_id) {
+             r.way['@changeset'] = changeset_id;
+           }
+
+           return r;
+         },
+         asGeoJSON: function asGeoJSON(resolver) {
+           return resolver["transient"](this, 'GeoJSON', function () {
+             var coordinates = resolver.childNodes(this).map(function (n) {
+               return n.loc;
+             });
+
+             if (this.isArea() && this.isClosed()) {
+               return {
+                 type: 'Polygon',
+                 coordinates: [coordinates]
+               };
+             } else {
+               return {
+                 type: 'LineString',
+                 coordinates: coordinates
+               };
              }
            });
-           graph.parentRelations(node).forEach(function (parent) {
-             parent = parent.removeMembersWithID(nodeId);
-             graph = graph.replace(parent);
+         },
+         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;
+               })]
+             };
 
-             if (parent.isDegenerate()) {
-               graph = actionDeleteRelation(parent.id)(graph);
+             if (!this.isClosed() && nodes.length) {
+               json.coordinates[0].push(nodes[0].loc);
+             }
+
+             var area = d3_geoArea(json); // Heuristic for detecting counterclockwise winding order. Assumes
+             // that OpenStreetMap polygons are not hemisphere-spanning.
+
+             if (area > 2 * Math.PI) {
+               json.coordinates[0] = json.coordinates[0].reverse();
+               area = d3_geoArea(json);
              }
+
+             return isNaN(area) ? 0 : area;
            });
-           return graph.remove(node);
-         };
+         }
+       }); // Filter function to eliminate consecutive duplicates.
 
-         return action;
+       function noRepeatNodes(node, i, arr) {
+         return i === 0 || node !== arr[i - 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
+       // 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 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
+       function osmOldMultipolygonOuterMemberOfRelation(entity, graph) {
+         if (entity.type !== 'relation' || !entity.isMultipolygon() || Object.keys(entity.tags).filter(osmIsInterestingTag).length > 1) {
+           return false;
+         }
 
-           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.
+         var outerMember;
 
+         for (var memberIndex in entity.members) {
+           var member = entity.members[memberIndex];
 
-           for (i = 0; i < nodeIDs.length; i++) {
-             node = graph.entity(nodeIDs[i]);
-             if (node.id === survivor.id) continue;
-             parents = graph.parentWays(node);
+           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);
 
-             for (j = 0; j < parents.length; j++) {
-               graph = graph.replace(parents[j].replaceNode(node.id, survivor.id));
+             if (Object.keys(outerMember.tags).filter(osmIsInterestingTag).length === 0) {
+               return false;
              }
+           }
+         }
 
-             parents = graph.parentRelations(node);
+         return outerMember;
+       } // For fixing up rendering of multipolygons with tags on the outer member.
+       // https://github.com/openstreetmap/iD/issues/613
 
-             for (j = 0; j < parents.length; j++) {
-               graph = graph.replace(parents[j].replaceMember(node, survivor));
-             }
+       function osmIsOldMultipolygonOuterMember(entity, graph) {
+         if (entity.type !== 'way' || Object.keys(entity.tags).filter(osmIsInterestingTag).length === 0) {
+           return false;
+         }
 
-             survivor = survivor.mergeTags(node.tags);
-             graph = actionDeleteNode(node.id)(graph);
-           }
+         var parents = graph.parentRelations(entity);
+         if (parents.length !== 1) return false;
+         var parent = parents[0];
 
-           graph = graph.replace(survivor); // find and delete any degenerate ways created by connecting adjacent vertices
+         if (!parent.isMultipolygon() || Object.keys(parent.tags).filter(osmIsInterestingTag).length > 1) {
+           return false;
+         }
 
-           parents = graph.parentWays(survivor);
+         var members = parent.members,
+             member;
 
-           for (i = 0; i < parents.length; i++) {
-             if (parents[i].isDegenerate()) {
-               graph = actionDeleteWay(parents[i].id)(graph);
-             }
+         for (var i = 0; i < members.length; i++) {
+           member = members[i];
+
+           if (member.id === entity.id && member.role && member.role !== 'outer') {
+             // Not outer member
+             return false;
            }
 
-           return graph;
-         };
+           if (member.id !== entity.id && (!member.role || member.role === 'outer')) {
+             // Not a simple multipolygon
+             return false;
+           }
+         }
 
-         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 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];
 
-           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 (!parent.isMultipolygon() || Object.keys(parent.tags).filter(osmIsInterestingTag).length > 1) {
+           return false;
+         }
 
+         var members = parent.members,
+             member,
+             outerMember;
 
-           for (i = 0; i < nodeIDs.length; i++) {
-             node = graph.entity(nodeIDs[i]);
-             relations = graph.parentRelations(node);
+         for (var i = 0; i < members.length; i++) {
+           member = members[i];
 
-             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
+           if (!member.role || member.role === 'outer') {
+             if (outerMember) return false; // Not a simple multipolygon
 
-               if (relation.hasFromViaTo()) {
-                 restrictionIDs.push(relation.id);
-               }
+             outerMember = member;
+           }
+         }
 
-               if (seen[relation.id] !== undefined && seen[relation.id] !== role) {
-                 return 'relation';
-               } else {
-                 seen[relation.id] = role;
-               }
-             }
-           } // gather restrictions for parent ways
+         if (!outerMember) return false;
+         var outerEntity = graph.hasEntity(outerMember.id);
 
+         if (!outerEntity || !Object.keys(outerEntity.tags).filter(osmIsInterestingTag).length) {
+           return false;
+         }
 
-           for (i = 0; i < nodeIDs.length; i++) {
-             node = graph.entity(nodeIDs[i]);
-             var parents = graph.parentWays(node);
+         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 (j = 0; j < parents.length; j++) {
-               var parent = parents[j];
-               relations = graph.parentRelations(parent);
+       function osmJoinWays(toJoin, graph) {
+         function resolve(member) {
+           return graph.childNodes(graph.entity(member.id));
+         }
 
-               for (k = 0; k < relations.length; k++) {
-                 relation = relations[k];
+         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
 
-                 if (relation.hasFromViaTo()) {
-                   restrictionIDs.push(relation.id);
-                 }
-               }
-             }
-           } // test restrictions
 
+         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)
 
-           restrictionIDs = utilArrayUniq(restrictionIDs);
+         var i;
+         var joinAsMembers = true;
 
-           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 (i = 0; i < toJoin.length; i++) {
+           if (toJoin[i] instanceof osmWay) {
+             joinAsMembers = false;
+             break;
+           }
+         }
 
-             var nodes = {
-               from: [],
-               via: [],
-               to: [],
-               keyfrom: [],
-               keyto: []
-             };
+         var sequences = [];
+         sequences.actions = [];
 
-             for (j = 0; j < relation.members.length; j++) {
-               collectNodes(relation.members[j], nodes);
-             }
+         while (toJoin.length) {
+           // start a new sequence
+           var item = toJoin.shift();
+           var currWays = [item];
+           var currNodes = resolve(item).slice(); // add to it
 
-             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 (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.
 
-             for (j = 0; j < nodeIDs.length; j++) {
-               var n = nodeIDs[j];
+             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.
 
-               if (nodes.from.indexOf(n) !== -1) {
-                 connectFrom = true;
+               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];
                }
 
-               if (nodes.via.indexOf(n) !== -1) {
-                 connectVia = true;
-               }
+               if (nodes[0] === end) {
+                 fn = currNodes.push; // join to end
 
-               if (nodes.to.indexOf(n) !== -1) {
-                 connectTo = true;
-               }
+                 nodes = nodes.slice(1);
+                 break;
+               } else if (nodes[nodes.length - 1] === end) {
+                 fn = currNodes.push; // join to end
 
-               if (nodes.keyfrom.indexOf(n) !== -1) {
-                 connectKeyFrom = true;
-               }
+                 nodes = nodes.slice(0, -1).reverse();
+                 item = reverse(item);
+                 break;
+               } else if (nodes[nodes.length - 1] === start) {
+                 fn = currNodes.unshift; // join to beginning
 
-               if (nodes.keyto.indexOf(n) !== -1) {
-                 connectKeyTo = true;
+                 nodes = nodes.slice(0, -1);
+                 break;
+               } else if (nodes[0] === start) {
+                 fn = currNodes.unshift; // join to beginning
+
+                 nodes = nodes.slice(1).reverse();
+                 item = reverse(item);
+                 break;
+               } else {
+                 fn = nodes = null;
                }
              }
 
-             if (connectFrom && connectTo && !isUturn) {
-               return 'restriction';
+             if (!nodes) {
+               // couldn't find a joinable way/member
+               break;
              }
 
-             if (connectFrom && connectVia) {
-               return 'restriction';
-             }
+             fn.apply(currWays, [item]);
+             fn.apply(currNodes, nodes);
+             toJoin.splice(i, 1);
+           }
 
-             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.
+           currWays.nodes = currNodes;
+           sequences.push(currWays);
+         }
 
+         return sequences;
+       }
 
-             if (connectKeyFrom || connectKeyTo) {
-               if (nodeIDs.length !== 2) {
-                 return 'restriction';
-               }
+       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 n0 = null;
-               var n1 = null;
-
-               for (j = 0; j < memberWays.length; j++) {
-                 way = memberWays[j];
-
-                 if (way.contains(nodeIDs[0])) {
-                   n0 = nodeIDs[0];
-                 }
-
-                 if (way.contains(nodeIDs[1])) {
-                   n1 = nodeIDs[1];
-                 }
-               }
-
-               if (n0 && n1) {
-                 // both nodes are part of the restriction
-                 var ok = false;
-
-                 for (j = 0; j < memberWays.length; j++) {
-                   way = memberWays[j];
+           var isPTv2 = /stop|platform/.test(member.role);
 
-                   if (way.areAdjacent(n0, n1)) {
-                     ok = true;
-                     break;
-                   }
-                 }
+           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 (!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)
+             graph = graph.replace(relation.addMember(member, memberIndex));
+           }
 
+           return graph;
+         }; // Add a way member into the relation "wherever it makes sense".
+         // In this situation we were not supplied a memberIndex.
 
-             for (j = 0; j < memberWays.length; j++) {
-               way = memberWays[j].update({}); // make copy
+         function addWayMember(relation, graph) {
+           var groups, tempWay, insertPairIsReversed, item, i, j, k; // remove PTv2 stops and platforms before doing anything.
 
-               for (k = 0; k < nodeIDs.length; k++) {
-                 if (nodeIDs[k] === survivor.id) continue;
+           var PTv2members = [];
+           var members = [];
 
-                 if (way.areAdjacent(nodeIDs[k], survivor.id)) {
-                   way = way.removeNode(nodeIDs[k]);
-                 } else {
-                   way = way.replaceNode(nodeIDs[k], survivor.id);
-                 }
-               }
+           for (i = 0; i < relation.members.length; i++) {
+             var m = relation.members[i];
 
-               if (way.isDegenerate()) {
-                 return 'restriction';
-               }
+             if (/stop|platform/.test(m.role)) {
+               PTv2members.push(m);
+             } else {
+               members.push(m);
              }
            }
 
-           return false; // if a key node appears multiple times (indexOf !== lastIndexOf) it's a FROM-VIA or TO-VIA junction
-
-           function hasDuplicates(n, i, arr) {
-             return arr.indexOf(n) !== arr.lastIndexOf(n);
-           }
+           relation = relation.update({
+             members: members
+           });
 
-           function keyNodeFilter(froms, tos) {
-             return function (n) {
-               return froms.indexOf(n) === -1 && tos.indexOf(n) === -1;
+           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 || []; // Insert pair is reversed if the inserted way comes before the original one.
+             // (Except when they form a loop.)
 
-           function collectNodes(member, collection) {
-             var entity = graph.hasEntity(member.id);
-             if (!entity) return;
-             var role = member.role || '';
+             var originalWay = graph.entity(insertPair.originalID);
+             var insertedWay = graph.entity(insertPair.insertedID);
+             insertPairIsReversed = originalWay.nodes.length > 0 && insertedWay.nodes.length > 0 && insertedWay.nodes[insertedWay.nodes.length - 1] === originalWay.nodes[0] && originalWay.nodes[originalWay.nodes.length - 1] !== insertedWay.nodes[0];
+           } 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);
+           }
 
-             if (!collection[role]) {
-               collection[role] = [];
-             }
+           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 (member.type === 'node') {
-               collection[role].push(member.id);
+           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 (role === 'via') {
-                 collection.keyfrom.push(member.id);
-                 collection.keyto.push(member.id);
+             for (j = 0; j < members.length; j++) {
+               if (members[j].index === startIndex) {
+                 break;
                }
-             } else if (member.type === 'way') {
-               collection[role].push.apply(collection[role], entity.nodes);
+             } // k = each member in segment
 
-               if (role === 'from' || role === 'via') {
-                 collection.keyfrom.push(entity.first());
-                 collection.keyfrom.push(entity.last());
-               }
 
-               if (role === 'to' || role === 'via') {
-                 collection.keyto.push(entity.first());
-                 collection.keyto.push(entity.last());
-               }
-             }
-           }
-         };
+             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
 
-         return action;
-       }
+               if (tempWay && item.id === tempWay.id) {
+                 var reverse = nodes[0].id !== insertPair.nodes[0] ^ insertPairIsReversed;
 
-       function actionCopyEntities(ids, fromGraph) {
-         var _copies = {};
+                 if (reverse) {
+                   item.pair = [{
+                     id: insertPair.insertedID,
+                     type: 'way',
+                     role: item.role
+                   }, {
+                     id: insertPair.originalID,
+                     type: 'way',
+                     role: item.role
+                   }];
+                 } else {
+                   item.pair = [{
+                     id: insertPair.originalID,
+                     type: 'way',
+                     role: item.role
+                   }, {
+                     id: insertPair.insertedID,
+                     type: 'way',
+                     role: item.role
+                   }];
+                 }
+               } // reorder `members` if necessary
 
-         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]);
-           }
+               if (k > 0) {
+                 if (j + k >= members.length || item.index !== members[j + k].index) {
+                   moveMember(members, item.index, j + k);
+                 }
+               }
 
-           return graph;
-         };
+               nodes.splice(0, way.nodes.length - 1);
+             }
+           }
 
-         action.copies = function () {
-           return _copies;
-         };
+           if (tempWay) {
+             graph = graph.remove(tempWay);
+           } // Final pass: skip dead items, split pairs, remove index properties
 
-         return action;
-       }
 
-       function actionDeleteMember(relationId, memberIndex) {
-         return function (graph) {
-           var relation = graph.entity(relationId).removeMember(memberIndex);
-           graph = graph.replace(relation);
+           var wayMembers = [];
 
-           if (relation.isDegenerate()) {
-             graph = actionDeleteRelation(relation.id)(graph);
-           }
+           for (i = 0; i < members.length; i++) {
+             item = members[i];
+             if (item.index === -1) continue;
 
-           return graph;
-         };
-       }
+             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
 
-       function actionDiscardTags(difference, discardTags) {
-         discardTags = discardTags || {};
-         return function (graph) {
-           difference.modified().forEach(checkTags);
-           difference.created().forEach(checkTags);
-           return graph;
 
-           function checkTags(entity) {
-             var keys = Object.keys(entity.tags);
-             var didDiscard = false;
-             var tags = {};
+           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
+           //
 
-             for (var i = 0; i < keys.length; i++) {
-               var k = keys[i];
+           function moveMember(arr, findIndex, toIndex) {
+             var i;
 
-               if (discardTags[k] || !entity.tags[k]) {
-                 didDiscard = true;
-               } else {
-                 tags[k] = entity.tags[k];
+             for (i = 0; i < arr.length; i++) {
+               if (arr[i].index === findIndex) {
+                 break;
                }
              }
 
-             if (didDiscard) {
-               graph = graph.replace(entity.update({
-                 tags: tags
-               }));
-             }
-           }
-         };
-       }
-
-       //
-       // 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
-       //
+             var item = Object.assign({}, arr[i]); // shallow copy
 
-       function actionDisconnect(nodeId, newNodeId) {
-         var wayIds;
+             arr[i].index = -1; // mark as dead
 
-         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);
+             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
 
-             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;
-         };
 
-         action.connections = function (graph) {
-           var candidates = [];
-           var keeping = false;
-           var parentWays = graph.parentWays(graph.entity(nodeId));
-           var way, waynode;
+           function withIndex(arr) {
+             var result = new Array(arr.length);
 
-           for (var i = 0; i < parentWays.length; i++) {
-             way = parentWays[i];
+             for (var i = 0; i < arr.length; i++) {
+               result[i] = Object.assign({}, arr[i]); // shallow copy
 
-             if (wayIds && wayIds.indexOf(way.id) === -1) {
-               keeping = true;
-               continue;
+               result[i].index = i;
              }
 
-             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;
-                   }
-
-                   candidates.push({
-                     wayID: way.id,
-                     index: j
-                   });
-                 }
-               }
-             }
+             return result;
            }
+         }
+       }
 
-           return keeping ? candidates : candidates.slice(1);
-         };
+       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.
 
-         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;
+                 return;
                }
-             });
+             }
            });
-           if (sharedRelation) return 'relation';
+           return graph;
          };
+       }
 
-         action.limitWays = function (val) {
-           if (!arguments.length) return wayIds;
-           wayIds = val;
-           return action;
+       // 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));
          };
-
-         return action;
        }
 
-       function actionExtract(entityID, projection) {
-         var extractedNodeID;
+       function actionChangeMember(relationId, member, memberIndex) {
+         return function (graph) {
+           return graph.replace(graph.entity(relationId).updateMember(member, memberIndex));
+         };
+       }
 
-         var action = function action(graph) {
+       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
 
-           if (entity.type === 'node') {
-             return extractFromNode(entity, graph);
-           }
-
-           return extractFromWayOrRelation(entity, graph);
+           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 extractFromNode(node, graph) {
-           extractedNodeID = node.id; // Create a new node to replace the one we will detach
+       function actionChangeTags(entityId, tags) {
+         return function (graph) {
+           var entity = graph.entity(entityId);
+           return graph.replace(entity.update({
+             tags: tags
+           }));
+         };
+       }
 
-           var replacement = osmNode({
-             loc: node.loc
+       function osmNode() {
+         if (!(this instanceof osmNode)) {
+           return new osmNode().initialize(arguments);
+         } else if (arguments.length) {
+           this.initialize(arguments);
+         }
+       }
+       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';
            });
-           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
+         },
+         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?
 
-           return graph.parentRelations(node).reduce(function (accGraph, parentRel) {
-             return accGraph.replace(parentRel.replaceMember(node, replacement));
-           }, graph);
-         }
+           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
 
-         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);
+             var re = /:direction$/i;
+             var keys = Object.keys(this.tags);
 
-           if (!extractedLoc || !isFinite(extractedLoc[0]) || !isFinite(extractedLoc[1])) {
-             extractedLoc = entity.extent(graph).center();
+             for (i = 0; i < keys.length; i++) {
+               if (re.test(keys[i])) {
+                 val = this.tags[keys[i]].toLowerCase();
+                 break;
+               }
+             }
            }
 
-           var indoorAreaValues = {
-             area: true,
-             corridor: true,
-             elevator: true,
-             level: true,
-             room: true
+           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 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
-
-           var pointTags = {};
-
-           for (var key in entityTags) {
-             if (entity.type === 'relation' && key === 'type') {
-               continue;
-             }
+           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
 
-             if (keysToRetain.indexOf(key) !== -1) {
-               continue;
-             }
 
-             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
+             if (v !== '' && !isNaN(+v)) {
+               results.push(+v);
+               return;
+             } // string direction - inspect parent ways
 
 
-             if (isIndoorArea && key === 'indoor') {
-               continue;
-             } // copy the tag from the entity to the point
+             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;
 
+               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
+                   }
 
-             pointTags[key] = entityTags[key]; // leave addresses and some other tags so they're on both features
+                   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 (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
+             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();
 
+               if (way.isClosed()) {
+                 nodes.pop();
+               } // ignore connecting node if closed
+               // return true if vertex appears multiple times (way is self intersecting)
 
-             delete entityTags[key];
-           }
 
-           if (!isBuilding && !isIndoorArea && fromGeometry === 'area') {
-             // ensure that areas keep area geometry
-             entityTags.area = 'yes';
-           }
+               return nodes.indexOf(this.id) !== nodes.lastIndexOf(this.id);
+             }
 
-           var replacement = osmNode({
-             loc: extractedLoc,
-             tags: pointTags
+             return false;
            });
-           graph = graph.replace(replacement);
-           extractedNodeID = replacement.id;
-           return graph.replace(entity.update({
-             tags: entityTags
-           }));
+         },
+         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
+           };
          }
+       });
 
-         action.getExtractedNodeID = function () {
-           return extractedNodeID;
-         };
+       function actionCircularize(wayId, projection, maxAngle) {
+         maxAngle = (maxAngle || 20) * Math.PI / 180;
 
-         return action;
-       }
+         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;
+           });
 
-       //
-       // 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 (!way.isConvex(graph)) {
+             graph = action.makeConvex(graph);
+           }
 
-       function actionJoin(ids) {
-         function groupEntitiesByGeometry(graph) {
-           var entities = ids.map(function (id) {
-             return graph.entity(id);
+           var nodes = utilArrayUniq(graph.childNodes(way));
+           var keyNodes = nodes.filter(function (n) {
+             return graph.parentWays(n).length !== 1;
            });
-           return Object.assign({
-             line: []
-           }, utilArrayGroupBy(entities, function (entity) {
-             return entity.geometry(graph);
-           }));
-         }
+           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
 
-         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
+           if (!keyNodes.length) {
+             keyNodes = [nodes[0]];
+             keyPoints = [points[0]];
+           }
 
-           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 (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.
 
-           for (var i = 0; i < ways.length; i++) {
-             if (!ways[i].isNew()) {
-               survivorID = ways[i].id;
-               break;
-             }
-           }
 
-           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.
+           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;
 
-           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 (indexRange < 0) {
+               indexRange += nodes.length;
+             } // position this key node
 
-           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 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
 
-             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;
+             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
+
+             if (totalAngle * sign > 0) {
+               totalAngle = -sign * (2 * Math.PI - Math.abs(totalAngle));
              }
 
-             survivor = survivor.mergeTags(multipolygon.tags);
-             graph = graph.replace(survivor);
-             graph = actionDeleteRelation(multipolygon.id, true
-             /* allow untagged members */
-             )(graph);
-             var tags = Object.assign({}, survivor.tags);
+             do {
+               numberNewPoints++;
+               eachAngle = totalAngle / (indexRange + numberNewPoints);
+             } while (Math.abs(eachAngle) > maxAngle); // move existing nodes
 
-             if (survivor.geometry(graph) !== 'area') {
-               // ensure the feature persists as an area
-               tags.area = 'yes';
-             }
 
-             delete tags.type; // remove type=multipolygon
+             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
 
-             survivor = survivor.update({
-               tags: tags
-             });
-             graph = graph.replace(survivor);
-           }
 
-           checkForSimpleMultipolygon();
-           return graph;
-         }; // Returns the number of nodes the resultant way is expected to have
+             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
 
+               var min = Infinity;
 
-         action.resultingWayNodesLength = function (graph) {
-           return ids.reduce(function (count, id) {
-             return count + graph.entity(id).nodes.length;
-           }, 0) - ids.length - 1;
-         };
+               for (var nodeId in nearNodes) {
+                 var nearAngle = nearNodes[nodeId];
+                 var dist = Math.abs(nearAngle - angle);
 
-         action.disabled = function (graph) {
-           var geometries = groupEntitiesByGeometry(graph);
+                 if (dist < min) {
+                   min = dist;
+                   origNode = origNodes[nodeId];
+                 }
+               }
 
-           if (ids.length < 2 || ids.length !== geometries.line.length) {
-             return 'not_eligible';
-           }
+               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..
 
-           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 (indexRange === 1 && inBetweenNodes.length) {
+               var startIndex1 = way.nodes.lastIndexOf(startNode.id);
+               var endIndex1 = way.nodes.lastIndexOf(endNode.id);
+               var wayDirection1 = endIndex1 - startIndex1;
 
+               if (wayDirection1 < -1) {
+                 wayDirection1 = 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
+               var parentWays = graph.parentWays(keyNodes[i]);
 
-               var common = utilArrayIntersection(joined[0].nodes.map(function (n) {
-                 return n.loc.toString();
-               }), intersections.map(function (n) {
-                 return n.toString();
-               }));
+               for (j = 0; j < parentWays.length; j++) {
+                 var sharedWay = parentWays[j];
+                 if (sharedWay === way) continue;
 
-               if (common.length !== intersections.length) {
-                 return 'paths_intersect';
+                 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;
+
+                   if (wayDirection2 < -1) {
+                     wayDirection2 = 1;
+                   }
+
+                   if (wayDirection1 !== wayDirection2) {
+                     inBetweenNodes.reverse();
+                     insertAt = startIndex2;
+                   }
+
+                   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
 
-           var nodeIds = joined[0].nodes.map(function (n) {
+
+           ids = 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;
-               }
-             });
+           });
+           ids.push(ids[0]);
+           way = way.update({
+             nodes: ids
+           });
+           graph = graph.replace(way);
+           return graph;
+         };
 
-             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;
-               }
-             }
+         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 (relation) {
-             return 'restriction';
+           if (sign === -1) {
+             nodes.reverse();
+             points.reverse();
            }
 
-           if (conflicting) {
-             return 'conflicting_tags';
+           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;
+
+             if (indexRange < 0) {
+               indexRange += nodes.length;
+             } // move interior nodes to the surface of the convex hull..
+
+
+             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);
+             }
            }
+
+           return graph;
          };
 
-         return action;
-       }
+         action.disabled = function (graph) {
+           if (!graph.entity(wayId).isClosed()) {
+             return 'not_closed';
+           } //disable when already circular
 
-       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);
-           }));
-         }
 
-         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;
+           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;
 
-             for (var i = 0; i < nodes.length; i++) {
-               var node = nodes[i];
+           if (hull.length !== points.length || hull.length < 3) {
+             return false;
+           }
 
-               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
+           var centroid = d3_polygonCentroid(points);
+           var radius = geoVecLengthSquare(centroid, points[0]);
+           var i, actualPoint; // compare distances between centroid and points
 
+           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%)
 
-               graph = graph.replace(point.update({
-                 tags: {},
-                 loc: node.loc
-               }));
-               target = target.replaceNode(node.id, point.id);
-               graph = graph.replace(target);
-               removeNode = node;
-               break;
+             if (diff > 0.05 * radius) {
+               return false;
              }
+           } //check if central angles are smaller than maxAngle
 
-             graph = graph.remove(removeNode);
-           });
-
-           if (target.tags.area === 'yes') {
-             var tags = Object.assign({}, target.tags); // shallow copy
 
-             delete tags.area;
+           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;
 
-             if (osmTagSuggestingArea(tags)) {
-               // remove the `area` tag if area geometry is now implied - #3851
-               target = target.update({
-                 tags: tags
-               });
-               graph = graph.replace(target);
+             if (angle < 0) {
+               angle = -angle;
              }
-           }
-
-           return graph;
-         };
 
-         action.disabled = function (graph) {
-           var geometries = groupEntitiesByGeometry(graph);
+             if (angle > Math.PI) {
+               angle = 2 * Math.PI - angle;
+             }
 
-           if (geometries.point.length === 0 || geometries.area.length + geometries.line.length !== 1 || geometries.relation.length !== 0) {
-             return 'not_eligible';
+             if (angle > maxAngle + epsilonAngle) {
+               return false;
+             }
            }
+
+           return 'already_circular';
          };
 
+         action.transitionable = true;
          return action;
        }
 
-       //
-       // 1. move all the nodes to a common location
-       // 2. `actionConnect` them
-
-       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]);
+       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 (node.hasInterestingTags()) {
-               interestingLoc = ++interestingCount === 1 ? node.loc : null;
-             }
+           if (geometries.point) return false; // delete if this node only be a vertex
 
-             sum = geoVecAdd(sum, node.loc);
-           }
+           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
 
-           return interestingLoc || geoVecScale(sum, 1 / nodeIDs.length);
+           return !node.hasInterestingTags();
          }
 
          var action = function action(graph) {
-           if (nodeIDs.length < 2) return graph;
-           var toLoc = loc;
-
-           if (!toLoc) {
-             toLoc = chooseLoc(graph);
-           }
-
-           for (var i = 0; i < nodeIDs.length; i++) {
-             var node = graph.entity(nodeIDs[i]);
+           var way = graph.entity(wayID);
+           graph.parentRelations(way).forEach(function (parent) {
+             parent = parent.removeMembersWithID(wayID);
+             graph = graph.replace(parent);
 
-             if (node.loc !== toLoc) {
-               graph = graph.replace(node.move(toLoc));
+             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);
 
-           return actionConnect(nodeIDs)(graph);
+             if (canDeleteNode(node, graph)) {
+               graph = graph.remove(node);
+             }
+           });
+           return graph.remove(way);
          };
 
-         action.disabled = function (graph) {
-           if (nodeIDs.length < 2) return 'not_eligible';
+         return action;
+       }
 
-           for (var i = 0; i < nodeIDs.length; i++) {
-             var entity = graph.entity(nodeIDs[i]);
-             if (entity.type !== 'node') return 'not_eligible';
-           }
+       function actionDeleteMultiple(ids) {
+         var actions = {
+           way: actionDeleteWay,
+           node: actionDeleteNode,
+           relation: actionDeleteRelation
+         };
 
-           return actionConnect(nodeIDs).disabled(graph);
+         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;
        }
 
-       function osmChangeset() {
-         if (!(this instanceof osmChangeset)) {
-           return new osmChangeset().initialize(arguments);
-         } else if (arguments.length) {
-           this.initialize(arguments);
+       function actionDeleteRelation(relationID, allowUntaggedMembers) {
+         function canDeleteEntity(entity, graph) {
+           return !graph.parentWays(entity).length && !graph.parentRelations(entity).length && !entity.hasInterestingTags() && !allowUntaggedMembers;
          }
-       }
-       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;
 
-           function nest(x, order) {
-             var groups = {};
+         var action = function action(graph) {
+           var relation = graph.entity(relationID);
+           graph.parentRelations(relation).forEach(function (parent) {
+             parent = parent.removeMembersWithID(relationID);
+             graph = graph.replace(parent);
 
-             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 (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);
 
-             var ordered = {};
-             order.forEach(function (o) {
-               if (groups[o]) ordered[o] = groups[o];
-             });
-             return ordered;
-           } // sort relations in a changeset by dependencies
+             if (canDeleteEntity(entity, graph)) {
+               graph = actionDeleteMultiple([memberID])(graph);
+             }
+           });
+           return graph.remove(relation);
+         };
 
+         return action;
+       }
 
-           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
+       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 (parent.isDegenerate()) {
+               graph = actionDeleteWay(parent.id)(graph);
+             }
+           });
+           graph.parentRelations(node).forEach(function (parent) {
+             parent = parent.removeMembersWithID(nodeId);
+             graph = graph.replace(parent);
 
-             function isNew(item) {
-               return !sorted[item['@id']] && !processing.find(function (proc) {
-                 return proc['@id'] === item['@id'];
-               });
+             if (parent.isDegenerate()) {
+               graph = actionDeleteRelation(parent.id)(graph);
              }
+           });
+           return graph.remove(node);
+         };
 
-             var processing = [];
-             var sorted = {};
-             var relations = changes.relation;
-             if (!relations) return changes;
+         return action;
+       }
 
-             for (var i = 0; i < relations.length; i++) {
-               var relation = relations[i]; // skip relation if already sorted
+       //
+       // First choose a node to be the survivor, with preference given
+       // to the oldest existing (not new) and "interesting" 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 (!sorted[relation['@id']]) {
-                 processing.push(relation);
-               }
+       function actionConnect(nodeIDs) {
+         var action = function action(graph) {
+           var survivor;
+           var node;
+           var parents;
+           var i, j; // Select the node with the ID passed as parameter if it is in the list,
+           // otherwise select the node with the oldest ID as the survivor, or the
+           // last one if there are only new nodes.
 
-               while (processing.length > 0) {
-                 var next = processing[0],
-                     deps = next.member.map(resolve).filter(Boolean).filter(isNew);
+           nodeIDs.reverse();
+           var interestingIDs = [];
 
-                 if (deps.length === 0) {
-                   sorted[next['@id']] = next;
-                   processing.shift();
-                 } else {
-                   processing = deps.concat(processing);
-                 }
+           for (i = 0; i < nodeIDs.length; i++) {
+             node = graph.entity(nodeIDs[i]);
+
+             if (node.hasInterestingTags()) {
+               if (!node.isNew()) {
+                 interestingIDs.push(node.id);
                }
              }
-
-             changes.relation = Object.values(sorted);
-             return changes;
            }
 
-           function rep(entity) {
-             return entity.asJXON(changeset_id);
-           }
+           survivor = graph.entity(utilOldestID(interestingIDs.length > 0 ? interestingIDs : nodeIDs)); // Replace all non-surviving nodes with the survivor and merge tags.
 
-           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
-               })
+           for (i = 0; i < nodeIDs.length; i++) {
+             node = graph.entity(nodeIDs[i]);
+             if (node.id === survivor.id) continue;
+             parents = graph.parentWays(node);
+
+             for (j = 0; j < parents.length; j++) {
+               graph = graph.replace(parents[j].replaceNode(node.id, survivor.id));
              }
-           };
-         },
-         asGeoJSON: function asGeoJSON() {
-           return {};
-         }
-       });
 
-       function osmNote() {
-         if (!(this instanceof osmNote)) {
-           return new osmNote().initialize(arguments);
-         } else if (arguments.length) {
-           this.initialize(arguments);
-         }
-       }
+             parents = graph.parentRelations(node);
 
-       osmNote.id = function () {
-         return osmNote.id.next--;
-       };
+             for (j = 0; j < parents.length; j++) {
+               graph = graph.replace(parents[j].replaceMember(node, survivor));
+             }
 
-       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];
+             survivor = survivor.mergeTags(node.tags);
+             graph = actionDeleteNode(node.id)(graph);
+           }
 
-             for (var prop in source) {
-               if (Object.prototype.hasOwnProperty.call(source, prop)) {
-                 if (source[prop] === undefined) {
-                   delete this[prop];
-                 } else {
-                   this[prop] = source[prop];
-                 }
-               }
+           graph = graph.replace(survivor); // find and delete any degenerate ways created by connecting adjacent vertices
+
+           parents = graph.parentWays(survivor);
+
+           for (i = 0; i < parents.length; i++) {
+             if (parents[i].isDegenerate()) {
+               graph = actionDeleteWay(parents[i].id)(graph);
              }
            }
 
-           if (!this.id) {
-             this.id = osmNote.id().toString();
-           }
+           return graph;
+         };
 
-           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
-           });
-         }
-       });
+         action.disabled = function (graph) {
+           var seen = {};
+           var restrictionIDs = [];
+           var survivor;
+           var node, way;
+           var relations, relation, role;
+           var i, j, k; // Select the node with the oldest ID as the survivor.
 
-       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);
+           survivor = graph.entity(utilOldestID(nodeIDs)); // 1. disable if the nodes being connected have conflicting relation roles
 
-       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;
-       };
+           for (i = 0; i < nodeIDs.length; i++) {
+             node = graph.entity(nodeIDs[i]);
+             relations = graph.parentRelations(node);
 
-       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();
+             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
 
-             for (var i = 0; i < this.members.length; i++) {
-               var member = resolver.hasEntity(this.members[i].id);
+               if (relation.hasFromViaTo()) {
+                 restrictionIDs.push(relation.id);
+               }
 
-               if (member) {
-                 extent._extend(member.extent(resolver, memo));
+               if (seen[relation.id] !== undefined && seen[relation.id] !== role) {
+                 return 'relation';
+               } else {
+                 seen[relation.id] = role;
                }
              }
+           } // gather restrictions for parent ways
 
-             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);
 
-           for (var i = 0; i < this.members.length; i++) {
-             result[i] = Object.assign({}, this.members[i], {
-               index: i
-             });
-           }
+           for (i = 0; i < nodeIDs.length; i++) {
+             node = graph.entity(nodeIDs[i]);
+             var parents = graph.parentWays(node);
 
-           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 (j = 0; j < parents.length; j++) {
+               var parent = parents[j];
+               relations = graph.parentRelations(parent);
 
-           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 (k = 0; k < relations.length; k++) {
+                 relation = relations[k];
 
-           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
-               });
+                 if (relation.hasFromViaTo()) {
+                   restrictionIDs.push(relation.id);
+                 }
+               }
              }
-           }
-         },
-         // 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
-               });
+           } // test restrictions
+
+
+           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: []
+             };
+
+             for (j = 0; j < relation.members.length; j++) {
+               collectNodes(relation.members[j], nodes);
              }
-           }
-         },
-         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 = [];
 
-           for (var i = 0; i < this.members.length; i++) {
-             var member = this.members[i];
+             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 (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
-               });
+             for (j = 0; j < nodeIDs.length; j++) {
+               var n = nodeIDs[j];
+
+               if (nodes.from.indexOf(n) !== -1) {
+                 connectFrom = true;
+               }
+
+               if (nodes.via.indexOf(n) !== -1) {
+                 connectVia = true;
+               }
+
+               if (nodes.to.indexOf(n) !== -1) {
+                 connectTo = true;
+               }
+
+               if (nodes.keyfrom.indexOf(n) !== -1) {
+                 connectKeyFrom = true;
+               }
+
+               if (nodes.keyto.indexOf(n) !== -1) {
+                 connectKeyTo = true;
+               }
              }
-           }
 
-           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]
+             if (connectFrom && connectTo && !isUturn) {
+               return 'restriction';
+             }
+
+             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];
+
+                 if (way.contains(nodeIDs[0])) {
+                   n0 = nodeIDs[0];
+                 }
+
+                 if (way.contains(nodeIDs[1])) {
+                   n1 = nodeIDs[1];
+                 }
+               }
+
+               if (n0 && n1) {
+                 // both nodes are part of the restriction
+                 var ok = false;
+
+                 for (j = 0; j < memberWays.length; j++) {
+                   way = memberWays[j];
+
+                   if (way.areAdjacent(n0, n1)) {
+                     ok = true;
+                     break;
                    }
-                 };
-               }, this)
+                 }
+
+                 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;
+
+                 if (way.areAdjacent(nodeIDs[k], survivor.id)) {
+                   way = way.removeNode(nodeIDs[k]);
+                 } else {
+                   way = way.replaceNode(nodeIDs[k], survivor.id);
+                 }
+               }
+
+               if (way.isDegenerate()) {
+                 return 'restriction';
+               }
              }
-           };
+           }
 
-           if (changeset_id) {
-             r.relation['@changeset'] = changeset_id;
+           return false; // if a key node appears multiple times (indexOf !== lastIndexOf) it's a FROM-VIA or TO-VIA junction
+
+           function hasDuplicates(n, i, arr) {
+             return arr.indexOf(n) !== arr.lastIndexOf(n);
            }
 
-           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));
-                 })
-               };
+           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 || '';
+
+             if (!collection[role]) {
+               collection[role] = [];
              }
-           });
-         },
-         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;
+
+             if (member.type === 'node') {
+               collection[role].push(member.id);
+
+               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());
+               }
+
+               if (role === 'to' || role === 'via') {
+                 collection.keyto.push(entity.first());
+                 collection.keyto.push(entity.last());
+               }
              }
            }
+         };
 
-           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;
+         return action;
+       }
+
+       function actionCopyEntities(ids, fromGraph) {
+         var _copies = {};
+
+         var action = function action(graph) {
+           ids.forEach(function (id) {
+             fromGraph.entity(id).copy(fromGraph, _copies);
            });
-           outers = osmJoinWays(outers, resolver);
-           inners = osmJoinWays(inners, resolver);
 
-           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]);
+           for (var id in _copies) {
+             graph = graph.replace(_copies[id]);
+           }
+
+           return graph;
+         };
+
+         action.copies = function () {
+           return _copies;
+         };
+
+         return action;
+       }
+
+       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;
+         };
+       }
+
+       function actionDiscardTags(difference, discardTags) {
+         discardTags = discardTags || {};
+         return function (graph) {
+           difference.modified().forEach(checkTags);
+           difference.created().forEach(checkTags);
+           return graph;
+
+           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];
+               }
              }
 
-             return sequence.nodes.map(function (node) {
-               return node.loc;
+             if (didDiscard) {
+               graph = graph.replace(entity.update({
+                 tags: tags
+               }));
+             }
+           }
+         };
+       }
+
+       //
+       // 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 actionDisconnect(nodeId, newNodeId) {
+         var wayIds;
+         var disconnectableRelationTypes = {
+           'associatedStreet': true,
+           'enforcement': true,
+           'site': true
+         };
+
+         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);
 
-           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];
+             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;
+         };
 
-           function findOuter(inner) {
-             var o, outer;
+         action.connections = function (graph) {
+           var candidates = [];
+           var keeping = false;
+           var parentWays = graph.parentWays(graph.entity(nodeId));
+           var way, waynode;
 
-             for (o = 0; o < outers.length; o++) {
-               outer = outers[o];
+           for (var i = 0; i < parentWays.length; i++) {
+             way = parentWays[i];
 
-               if (geoPolygonContainsPolygon(outer, inner)) {
-                 return o;
-               }
+             if (wayIds && wayIds.indexOf(way.id) === -1) {
+               keeping = true;
+               continue;
              }
 
-             for (o = 0; o < outers.length; o++) {
-               outer = outers[o];
+             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;
+                   }
+
+                   candidates.push({
+                     wayID: way.id,
+                     index: j
+                   });
+                 }
+               }
+             }
+           }
+
+           return keeping ? candidates : candidates.slice(1);
+         };
+
+         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.filter(function (relation) {
+               return !disconnectableRelationTypes[relation.tags.type];
+             }).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';
+         };
+
+         action.limitWays = function (val) {
+           if (!arguments.length) return wayIds;
+           wayIds = val;
+           return action;
+         };
+
+         return action;
+       }
+
+       function actionExtract(entityID, projection) {
+         var extractedNodeID;
+
+         var action = function action(graph) {
+           var entity = graph.entity(entityID);
+
+           if (entity.type === 'node') {
+             return extractFromNode(entity, graph);
+           }
+
+           return extractFromWayOrRelation(entity, graph);
+         };
+
+         function extractFromNode(node, graph) {
+           extractedNodeID = node.id; // Create a new node to replace the one we will detach
+
+           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
+
+           return graph.parentRelations(node).reduce(function (accGraph, parentRel) {
+             return accGraph.replace(parentRel.replaceMember(node, replacement));
+           }, graph);
+         }
+
+         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);
+
+           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
+
+           var pointTags = {};
+
+           for (var key in entityTags) {
+             if (entity.type === 'relation' && key === 'type') {
+               continue;
+             }
+
+             if (keysToRetain.indexOf(key) !== -1) {
+               continue;
+             }
+
+             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
+
+
+             if (isIndoorArea && key === 'indoor') {
+               continue;
+             } // copy the tag from the entity to the point
+
+
+             pointTags[key] = entityTags[key]; // leave addresses and some other tags so they're on both features
+
+             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
+
+
+             delete entityTags[key];
+           }
+
+           if (!isBuilding && !isIndoorArea && fromGeometry === 'area') {
+             // ensure that areas keep area geometry
+             entityTags.area = 'yes';
+           }
+
+           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;
+         };
+
+         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
+       //
+
+       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 action = function action(graph) {
+           var ways = ids.map(graph.entity, graph); // 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 survivorID = utilOldestID(ways.map(function (way) {
+             return way.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;
+           });
+           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.
+
+           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
+
+           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];
+
+             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;
+             }
+
+             survivor = survivor.mergeTags(multipolygon.tags);
+             graph = graph.replace(survivor);
+             graph = actionDeleteRelation(multipolygon.id, true
+             /* allow untagged members */
+             )(graph);
+             var tags = Object.assign({}, survivor.tags);
+
+             if (survivor.geometry(graph) !== 'area') {
+               // ensure the feature persists as an area
+               tags.area = 'yes';
+             }
+
+             delete tags.type; // remove type=multipolygon
+
+             survivor = survivor.update({
+               tags: tags
+             });
+             graph = graph.replace(survivor);
+           }
+
+           checkForSimpleMultipolygon();
+           return graph;
+         }; // Returns the number of nodes the resultant way is expected to have
+
+
+         action.resultingWayNodesLength = function (graph) {
+           return ids.reduce(function (count, id) {
+             return count + graph.entity(id).nodes.length;
+           }, 0) - ids.length - 1;
+         };
+
+         action.disabled = function (graph) {
+           var geometries = groupEntitiesByGeometry(graph);
+
+           if (ids.length < 2 || ids.length !== geometries.line.length) {
+             return 'not_eligible';
+           }
+
+           var joined = osmJoinWays(ids.map(graph.entity, graph), graph);
+
+           if (joined.length > 1) {
+             return 'not_adjacent';
+           }
+
+           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.
+
+           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;
+             });
+           };
+
+           var relsA = sortedParentRelations(ids[0]);
+
+           for (i = 1; i < ids.length; i++) {
+             var relsB = sortedParentRelations(ids[i]);
+
+             if (!utilArrayIdentical(relsA, relsB)) {
+               return 'conflicting_relations';
+             }
+           } // Loop through all combinations of path-pairs
+           // to check potential intersections between all pairs
+
+
+           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';
+               }
+             }
+           }
+
+           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';
+           }
+
+           if (conflicting) {
+             return 'conflicting_tags';
+           }
+         };
+
+         return action;
+       }
+
+       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);
+           }));
+         }
+
+         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;
+
+             if (!point.isNew()) {
+               // Try to preserve the original point if it already has
+               // an ID in the database.
+               var inserted = false;
+
+               var canBeReplaced = function canBeReplaced(node) {
+                 return !(graph.parentWays(node).length > 1 || graph.parentRelations(node).length);
+               };
+
+               var replaceNode = function replaceNode(node) {
+                 graph = graph.replace(point.update({
+                   tags: node.tags,
+                   loc: node.loc
+                 }));
+                 target = target.replaceNode(node.id, point.id);
+                 graph = graph.replace(target);
+                 removeNode = node;
+                 inserted = true;
+               };
+
+               var i;
+               var node; // First, try to replace a new child node on the target way.
+
+               for (i = 0; i < nodes.length; i++) {
+                 node = nodes[i];
+
+                 if (canBeReplaced(node) && node.isNew()) {
+                   replaceNode(node);
+                   break;
+                 }
+               }
+
+               if (!inserted && point.hasInterestingTags()) {
+                 // No new child node found, try to find an existing, but
+                 // uninteresting child node instead.
+                 for (i = 0; i < nodes.length; i++) {
+                   node = nodes[i];
+
+                   if (canBeReplaced(node) && !node.hasInterestingTags()) {
+                     replaceNode(node);
+                     break;
+                   }
+                 }
+
+                 if (!inserted) {
+                   // Still not inserted, try to find an existing, interesting,
+                   // but more recent child node.
+                   for (i = 0; i < nodes.length; i++) {
+                     node = nodes[i];
+
+                     if (canBeReplaced(node) && utilCompareIDs(point.id, node.id) < 0) {
+                       replaceNode(node);
+                       break;
+                     }
+                   }
+                 } // If the point still hasn't been inserted, we give up.
+                 // There are more interesting or older nodes on the way.
+
+               }
+             }
+
+             graph = graph.remove(removeNode);
+           });
+
+           if (target.tags.area === 'yes') {
+             var tags = Object.assign({}, target.tags); // shallow copy
+
+             delete tags.area;
+
+             if (osmTagSuggestingArea(tags)) {
+               // remove the `area` tag if area geometry is now implied - #3851
+               target = target.update({
+                 tags: tags
+               });
+               graph = graph.replace(target);
+             }
+           }
+
+           return graph;
+         };
+
+         action.disabled = function (graph) {
+           var geometries = groupEntitiesByGeometry(graph);
+
+           if (geometries.point.length === 0 || geometries.area.length + geometries.line.length !== 1 || geometries.relation.length !== 0) {
+             return 'not_eligible';
+           }
+         };
+
+         return action;
+       }
+
+       //
+       // 1. move all the nodes to a common location
+       // 2. `actionConnect` them
+
+       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);
+           }
+
+           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);
+           }
+
+           for (var i = 0; i < nodeIDs.length; i++) {
+             var node = graph.entity(nodeIDs[i]);
+
+             if (node.loc !== toLoc) {
+               graph = graph.replace(node.move(toLoc));
+             }
+           }
+
+           return actionConnect(nodeIDs)(graph);
+         };
+
+         action.disabled = function (graph) {
+           if (nodeIDs.length < 2) return 'not_eligible';
+
+           for (var i = 0; i < nodeIDs.length; i++) {
+             var entity = graph.entity(nodeIDs[i]);
+             if (entity.type !== 'node') return 'not_eligible';
+           }
+
+           return actionConnect(nodeIDs).disabled(graph);
+         };
+
+         return action;
+       }
+
+       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;
+
+           function nest(x, order) {
+             var groups = {};
+
+             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]);
+             }
+
+             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
+
+
+             function isNew(item) {
+               return !sorted[item['@id']] && !processing.find(function (proc) {
+                 return proc['@id'] === item['@id'];
+               });
+             }
+
+             var processing = [];
+             var sorted = {};
+             var relations = changes.relation;
+             if (!relations) return changes;
+
+             for (var i = 0; i < relations.length; i++) {
+               var relation = relations[i]; // skip relation if already sorted
+
+               if (!sorted[relation['@id']]) {
+                 processing.push(relation);
+               }
+
+               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;
+           }
+
+           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 {};
+         }
+       });
+
+       function osmNote() {
+         if (!(this instanceof osmNote)) {
+           return new osmNote().initialize(arguments);
+         } else if (arguments.length) {
+           this.initialize(arguments);
+         }
+       }
+
+       osmNote.id = function () {
+         return osmNote.id.next--;
+       };
+
+       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];
+
+             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.id = osmNote.id().toString();
+           }
+
+           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
+           });
+         }
+       });
+
+       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);
+
+       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();
+
+             for (var i = 0; i < this.members.length; i++) {
+               var member = resolver.hasEntity(this.members[i].id);
+
+               if (member) {
+                 extent._extend(member.extent(resolver, memo));
+               }
+             }
+
+             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);
+
+           for (var i = 0; i < this.members.length; i++) {
+             result[i] = Object.assign({}, this.members[i], {
+               index: i
+             });
+           }
+
+           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
+               }));
+             }
+           }
+
+           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
+               });
+             }
+           }
+         },
+         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 = [];
+
+           for (var i = 0; i < this.members.length; i++) {
+             var member = this.members[i];
+
+             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
+               });
+             }
+           }
+
+           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 (changeset_id) {
+             r.relation['@changeset'] = changeset_id;
+           }
+
+           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;
+             }
+           }
+
+           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;
+         },
+         isConnectivity: function isConnectivity() {
+           return !!(this.tags.type && this.tags.type.match(/^connectivity:?/));
+         },
+         // 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 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]);
+             }
+
+             return sequence.nodes.map(function (node) {
+               return node.loc;
+             });
+           };
+
+           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 findOuter(inner) {
+             var o, outer;
+
+             for (o = 0; o < outers.length; o++) {
+               outer = outers[o];
+
+               if (geoPolygonContainsPolygon(outer, inner)) {
+                 return o;
+               }
+             }
+
+             for (o = 0; o < outers.length; o++) {
+               outer = outers[o];
+
+               if (geoPolygonIntersectsPolygon(outer, inner, false)) {
+                 return o;
+               }
+             }
+           }
+
+           for (var i = 0; i < inners.length; i++) {
+             var inner = inners[i];
+
+             if (d3_geoArea({
+               type: 'Polygon',
+               coordinates: [inner]
+             }) < 2 * Math.PI) {
+               inner = inner.reverse();
+             }
+
+             var o = findOuter(inners[i]);
+
+             if (o !== undefined) {
+               result[o].push(inners[i]);
+             } else {
+               result.push([inners[i]]); // Invalid geometry
+             }
+           }
+
+           return result;
+         }
+       });
+
+       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
+
+           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);
+           }
+         }
+
+         _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
+
+         }], [{
+           key: "id",
+           value: function id() {
+             return this.nextId--;
+           }
+         }]);
+
+         return QAItem;
+       }();
+       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 _wayIDs; // the strategy for picking which way will have a new version and which way is newly created
+
+
+         var _keepHistoryOn = 'longest'; // 'longest', 'first'
+         // The IDs of the ways actually created by running this action
+
+         var _createdWayIDs = [];
+
+         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.
+
+
+         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
+
+
+           length = 0;
+
+           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;
+
+           for (i = wrap(idxA - 1); i !== idxA; i = wrap(i - 1)) {
+             length += dist(graph, nodes[i], nodes[wrap(i + 1)]);
+
+             if (length < lengths[i]) {
+               lengths[i] = length;
+             }
+           } // determine best opposite node to split
+
+
+           for (i = 0; i < nodes.length; i++) {
+             var cost = lengths[i] / dist(graph, nodes[idxA], nodes[i]);
+
+             if (cost > best) {
+               idxB = i;
+               best = cost;
+             }
+           }
+
+           return idxB;
+         }
+
+         function totalLengthBetweenNodes(graph, nodes) {
+           var totalLength = 0;
+
+           for (var i = 0; i < nodes.length - 1; i++) {
+             totalLength += dist(graph, nodes[i], nodes[i + 1]);
+           }
+
+           return totalLength;
+         }
+
+         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);
+
+           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));
+             }
+           } 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 (_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 (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
+               });
+             }
+           }
+
+           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
+
+             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 (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 (wayVia && utilArrayIntersection(wayB.nodes, wayVia.nodes).length) {
+                         keepB = true;
+                         break;
+                       }
+                     }
+                   }
+                 }
+
+                 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)
+
+             } 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 (!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);
+
+           return graph;
+         }
+
+         var action = function action(graph) {
+           _createdWayIDs = [];
+           var newWayIndex = 0;
+
+           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;
+             }
+           }
+
+           return graph;
+         };
+
+         action.getCreatedWayIDs = function () {
+           return _createdWayIDs;
+         };
+
+         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 (hasLine) {
+               return splittableParents.filter(function (parent) {
+                 return parent.geometry(graph) === 'line';
+               });
+             }
+           }
+
+           return splittableParents;
+
+           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 (parent.isClosed()) return true; // otherwise, we can't split nodes at their endpoints.
+
+             for (var i = 1; i < parent.nodes.length - 1; i++) {
+               if (parent.nodes[i] === nodeId) return true;
+             }
+
+             return false;
+           }
+         };
+
+         action.ways = function (graph) {
+           return utilArrayUniq([].concat.apply([], nodeIds.map(function (nodeId) {
+             return action.waysForNode(nodeId, graph);
+           })));
+         };
+
+         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';
+             }
+           }
+         };
+
+         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;
+       }
+
+       function coreGraph(other, mutable) {
+         if (!(this instanceof coreGraph)) return new coreGraph(other, mutable);
+
+         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]);
+         }
+
+         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 (!entity) {
+             entity = this.entities.__proto__[id]; // eslint-disable-line no-proto
+           }
+
+           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] = {});
+
+           if (transients[key] !== undefined) {
+             return transients[key];
+           }
+
+           transients[key] = fn.call(entity);
+           return transients[key];
+         },
+         parentWays: function parentWays(entity) {
+           var parents = this._parentWays[entity.id];
+           var result = [];
+
+           if (parents) {
+             parents.forEach(function (id) {
+               result.push(this.entity(id));
+             }, this);
+           }
+
+           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 = [];
+
+           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 = [];
+
+           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;
+
+           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
+
+             base.entities[entity.id] = entity;
+
+             this._updateCalculated(undefined, entity, base.parentWays, base.parentRels); // Restore provisionally-deleted nodes that are discovered to have an extant parent
+
+
+             if (entity.type === 'way') {
+               for (j = 0; j < entity.nodes.length; j++) {
+                 id = entity.nodes[j];
+
+                 for (k = 1; k < stack.length; k++) {
+                   var ents = stack[k].entities;
+
+                   if (ents.hasOwnProperty(id) && ents[id] === undefined) {
+                     delete ents[id];
+                   }
+                 }
+               }
+             }
+           }
+
+           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 (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);
+             }
+
+             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;
+             }) : [];
+
+             if (oldentity && entity) {
+               removed = utilArrayDifference(oldentityMemberIDs, entityMemberIDs);
+               added = utilArrayDifference(entityMemberIDs, oldentityMemberIDs);
+             } else if (oldentity) {
+               removed = oldentityMemberIDs;
+               added = [];
+             } else if (entity) {
+               removed = [];
+               added = entityMemberIDs;
+             }
+
+             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);
+             }
+
+             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);
+
+             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);
+
+             delete this.entities[id];
+           });
+         },
+         update: function update() {
+           var graph = this.frozen ? coreGraph(this, true) : this;
+
+           for (var i = 0; i < arguments.length; i++) {
+             arguments[i].call(graph, graph);
+           }
+
+           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);
+
+           for (var i in entities) {
+             this.entities[i] = entities[i];
+
+             this._updateCalculated(base.entities[i], this.entities[i]);
+           }
+
+           return this;
+         }
+       };
+
+       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 vgraph = coreGraph(); // virtual graph
+
+         var i, j, k;
+
+         function memberOfRestriction(entity) {
+           return graph.parentRelations(entity).some(function (r) {
+             return r.isRestriction();
+           });
+         }
+
+         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];
+         }
+
+         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
+
+         var actions = []; // STEP 1:  walk the graph outwards from starting vertex to search
+         //  for more key vertices and ways to include in the intersection..
+
+         while (checkVertices.length) {
+           vertex = checkVertices.pop(); // check this vertex for parent ways that are roads
+
+           checkWays = graph.parentWays(vertex);
+           var hasWays = false;
+
+           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
+
+             hasWays = true; // check the way's children for more key vertices
+
+             nodes = utilArrayUniq(graph.childNodes(way));
+
+             for (j = 0; j < nodes.length; j++) {
+               node = nodes[j];
+               if (node === vertex) continue; // same thing
+
+               if (vertices.indexOf(node) !== -1) continue; // seen it already
+
+               if (geoSphericalDistance(node.loc, startNode.loc) > maxDistance) continue; // too far from start
+               // a key vertex will have parents that are also roads
+
+               var hasParents = false;
+               parents = graph.parentWays(node);
+
+               for (k = 0; k < parents.length; k++) {
+                 parent = parents[k];
+                 if (parent === way) continue; // same thing
+
+                 if (ways.indexOf(parent) !== -1) continue; // seen it already
+
+                 if (!isRoad(parent)) continue; // not a road
+
+                 hasParents = true;
+                 break;
+               }
+
+               if (hasParents) {
+                 checkVertices.push(node);
+               }
+             }
+           }
+
+           if (hasWays) {
+             vertices.push(vertex);
+           }
+         }
+
+         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);
+           }
+         }); // 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');
+
+           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
+
+         osmEntity.id.next.way = origCount; // STEP 5:  Update arrays to point to vgraph entities
+
+         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.
+
+         function withMetadata(way, vertexIds) {
+           var __oneWay = way.isOneWay(); // which affixes are key vertices?
+
+
+           var __first = vertexIds.indexOf(way.first()) !== -1;
+
+           var __last = vertexIds.indexOf(way.last()) !== -1; // what roles is this way eligible for?
+
+
+           var __via = __first && __last;
+
+           var __from = __first && !__oneWay || __last;
+
+           var __to = __first || __last && !__oneWay;
+
+           return way.update({
+             __first: __first,
+             __last: __last,
+             __from: __from,
+             __via: __via,
+             __to: __to,
+             __oneWay: __oneWay
+           });
+         }
+
+         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
+
+         var keepGoing;
+         var removeWayIds = [];
+         var removeVertexIds = [];
+
+         do {
+           keepGoing = false;
+           checkVertices = vertexIds.slice();
+
+           for (i = 0; i < checkVertices.length; i++) {
+             var vertexId = checkVertices[i];
+             vertex = vgraph.hasEntity(vertexId);
+
+             if (!vertex) {
+               if (vertexIds.indexOf(vertexId) !== -1) {
+                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
+               }
+
+               removeVertexIds.push(vertexId);
+               continue;
+             }
+
+             parents = vgraph.parentWays(vertex);
+
+             if (parents.length < 3) {
+               if (vertexIds.indexOf(vertexId) !== -1) {
+                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
+               }
+             }
+
+             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 (aIsLeaf && !bIsLeaf) {
+                 leaf = a;
+                 survivor = b;
+               } else if (!aIsLeaf && bIsLeaf) {
+                 leaf = b;
+                 survivor = a;
+               }
+
+               if (leaf && survivor) {
+                 survivor = withMetadata(survivor, vertexIds); // update survivor way
+
+                 vgraph = vgraph.replace(survivor).remove(leaf); // update graph
+
+                 removeWayIds.push(leaf.id);
+                 keepGoing = true;
+               }
+             }
+
+             parents = vgraph.parentWays(vertex);
+
+             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
+               }
+
+               removeVertexIds.push(vertexId);
+               keepGoing = true;
+             }
+
+             if (parents.length < 1) {
+               // vertex is no longer attached to anything
+               vgraph = vgraph.remove(vertex);
+             }
+           }
+         } 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.
+         //
+
+         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
+
+           function step(entity, currPath, currRestrictions, matchedRestriction) {
+             currPath = (currPath || []).slice(); // shallow copy
+
+             if (currPath.length >= maxPathLength) return;
+             currPath.push(entity.id);
+             currRestrictions = (currRestrictions || []).slice(); // shallow copy
+
+             var i, j;
+
+             if (entity.type === 'node') {
+               var parents = vgraph.parentWays(entity);
+               var nextWays = []; // which ways can we step into?
+
+               for (i = 0; i < parents.length; i++) {
+                 var way = parents[i]; // if next way is a oneway incoming to this vertex, skip
+
+                 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`)
+
+                 var restrict = null;
+
+                 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?
+
+                   var matchesFrom = f.id === fromWayId;
+                   var matchesViaTo = false;
+                   var isAlongOnlyPath = false;
+
+                   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 = [];
+
+                       for (k = 2; k < currPath.length; k += 2) {
+                         // k = 2 skips FROM
+                         pathVias.push(currPath[k]); // (path goes way-node-way...)
+                       }
+
+                       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)
+
+
+                   if (restrict && restrict.direct) break;
+                 }
+
+                 nextWays.push({
+                   way: way,
+                   restrict: restrict
+                 });
+               }
+
+               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)
+
+                 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);
+
+                 if (turn) {
+                   if (matchedRestriction) {
+                     turn.restrictionID = matchedRestriction.id;
+                     turn.no = matchedRestriction.no;
+                     turn.only = matchedRestriction.only;
+                     turn.direct = matchedRestriction.direct;
+                   }
+
+                   turns.push(osmTurn(turn));
+                 }
+
+                 if (currPath[0] === currPath[2]) return; // if we made a u-turn - stop here
+               }
+
+               if (matchedRestriction && matchedRestriction.end) return; // don't advance any further
+               // which nodes can we step into?
+
+               var n1 = vgraph.entity(entity.first());
+               var n2 = vgraph.entity(entity.last());
+               var dist = geoSphericalDistance(n1.loc, n2.loc);
+               var nextNodes = [];
+
+               if (currPath.length > 1) {
+                 if (dist > maxDistance) return; // the next node is too far
+
+                 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 (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
+               }
+
+               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
+
+                   var isOnlyVia = false;
+                   var v = r.membersByRole('via');
+
+                   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 (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
+
+
+           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];
+
+             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
+               }
+             }
+
+             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];
+             }
+           }
+         };
+
+         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;
+         }
+
+         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 ((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';
+       }
+
+       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);
+           }
+
+           function isContained(d, i) {
+             return contained[i].some(function (val) {
+               return val;
+             });
+           }
+
+           function filterContained(d) {
+             return d.filter(isContained);
+           }
+
+           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.
+           // Keep the oldest multipolygon alive if it exists.
+
+
+           var relation;
+
+           if (entities.multipolygon.length > 0) {
+             var oldestID = utilOldestID(entities.multipolygon.map(function (entity) {
+               return entity.id;
+             }));
+             relation = entities.multipolygon.find(function (entity) {
+               return entity.id === oldestID;
+             });
+           } else {
+             relation = osmRelation({
+               id: newRelationId,
+               tags: {
+                 type: 'multipolygon'
+               }
+             });
+           }
+
+           entities.multipolygon.forEach(function (m) {
+             if (m.id !== relation.id) {
+               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';
+             }
+
+             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'])
+           }));
+         };
+
+         action.disabled = function (graph) {
+           var entities = groupEntities(graph);
+
+           if (entities.other.length > 0 || entities.closedWay.length + entities.multipolygon.length < 2) {
+             return 'not_eligible';
+           }
+
+           if (!entities.multipolygon.every(function (r) {
+             return r.isComplete(graph);
+           })) {
+             return 'incomplete_relation';
+           }
+
+           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;
+       }
+
+       var DESCRIPTORS$1 = descriptors;
+       var objectDefinePropertyModule = objectDefineProperty;
+       var regExpFlags = regexpFlags$1;
+       var fails$4 = fails$V;
+
+       var RegExpPrototype = RegExp.prototype;
+
+       var FORCED$2 = DESCRIPTORS$1 && fails$4(function () {
+         // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
+         return Object.getOwnPropertyDescriptor(RegExpPrototype, 'flags').get.call({ dotAll: true, sticky: true }) !== 'sy';
+       });
+
+       // `RegExp.prototype.flags` getter
+       // https://tc39.es/ecma262/#sec-get-regexp.prototype.flags
+       if (FORCED$2) objectDefinePropertyModule.f(RegExpPrototype, 'flags', {
+         configurable: true,
+         get: regExpFlags
+       });
+
+       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;
+
+           if (Array.isArray(a)) {
+             length = a.length;
+             if (length != b.length) return false;
+
+             for (i = length; i-- !== 0;) {
+               if (!equal(a[i], b[i])) return false;
+             }
+
+             return true;
+           }
+
+           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;
+           }
+
+           for (i = length; i-- !== 0;) {
+             var key = keys[i];
+             if (!equal(a[key], b[key])) return false;
+           }
+
+           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 = {};
+
+         for (var j = 0; j < buffer2.length; j++) {
+           var item = buffer2[j];
+
+           if (equivalenceClasses[item]) {
+             equivalenceClasses[item].push(j);
+           } else {
+             equivalenceClasses[item] = [j];
+           }
+         }
+
+         var NULLRESULT = {
+           buffer1index: -1,
+           buffer2index: -1,
+           chain: null
+         };
+         var candidates = [NULLRESULT];
+
+         for (var i = 0; i < buffer1.length; i++) {
+           var _item = buffer1[i];
+           var buffer2indices = equivalenceClasses[_item] || [];
+           var r = 0;
+           var c = candidates[0];
+
+           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 (s < candidates.length) {
+               var newCandidate = {
+                 buffer1index: i,
+                 buffer2index: _j,
+                 chain: candidates[s]
+               };
+
+               if (r === candidates.length) {
+                 candidates.push(c);
+               } else {
+                 candidates[r] = c;
+               }
+
+               r = s + 1;
+               c = newCandidate;
+
+               if (r === candidates.length) {
+                 break; // no point in examining further (j)s
+               }
+             }
+           }
+
+           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].
+
+
+         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.
+
+
+       function diffIndices(buffer1, buffer2) {
+         var lcs = LCS(buffer1, buffer2);
+         var result = [];
+         var tail1 = buffer1.length;
+         var tail2 = buffer2.length;
+
+         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;
+
+           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)
+             });
+           }
+         }
+
+         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)
+       //
+
+
+       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 = [];
+
+         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])
+
+           });
+         }
+
+         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;
+           }
+         }
+
+         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
+
+             regionEnd = Math.max(regionEnd, nextHunkStart + nextHunk.oLength);
+             regionHunks.push(hunks.shift());
+           }
+
+           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]
+             };
+
+             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 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;
+         }
+
+         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`
+
+
+       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 = [];
+
+         function flushOk() {
+           if (okBuffer.length) {
+             results.push({
+               ok: okBuffer
+             });
+           }
+
+           okBuffer = [];
+         }
+
+         function isFalseConflict(a, b) {
+           if (a.length !== b.length) return false;
+
+           for (var i = 0; i < a.length; i++) {
+             if (a[i] !== b[i]) return false;
+           }
+
+           return true;
+         }
+
+         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;
+
+               (_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;
+       }
+
+       var lodash = {exports: {}};
+
+       (function (module, exports) {
+         (function () {
+           /** Used as a safe reference for `undefined` in pre-ES5 environments. */
+           var undefined$1;
+           /** Used as the semantic version number. */
+
+           var VERSION = '4.17.21';
+           /** Used as the size to enable large array optimizations. */
+
+           var LARGE_ARRAY_SIZE = 200;
+           /** Error message constants. */
+
+           var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',
+               FUNC_ERROR_TEXT = 'Expected a function',
+               INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';
+           /** Used to stand-in for `undefined` hash values. */
+
+           var HASH_UNDEFINED = '__lodash_hash_undefined__';
+           /** Used as the maximum memoize cache size. */
+
+           var MAX_MEMOIZE_SIZE = 500;
+           /** Used as the internal argument placeholder. */
+
+           var PLACEHOLDER = '__lodash_placeholder__';
+           /** Used to compose bitmasks for cloning. */
+
+           var CLONE_DEEP_FLAG = 1,
+               CLONE_FLAT_FLAG = 2,
+               CLONE_SYMBOLS_FLAG = 4;
+           /** Used to compose bitmasks for value comparisons. */
+
+           var COMPARE_PARTIAL_FLAG = 1,
+               COMPARE_UNORDERED_FLAG = 2;
+           /** Used to compose bitmasks for function metadata. */
+
+           var WRAP_BIND_FLAG = 1,
+               WRAP_BIND_KEY_FLAG = 2,
+               WRAP_CURRY_BOUND_FLAG = 4,
+               WRAP_CURRY_FLAG = 8,
+               WRAP_CURRY_RIGHT_FLAG = 16,
+               WRAP_PARTIAL_FLAG = 32,
+               WRAP_PARTIAL_RIGHT_FLAG = 64,
+               WRAP_ARY_FLAG = 128,
+               WRAP_REARG_FLAG = 256,
+               WRAP_FLIP_FLAG = 512;
+           /** Used as default options for `_.truncate`. */
+
+           var DEFAULT_TRUNC_LENGTH = 30,
+               DEFAULT_TRUNC_OMISSION = '...';
+           /** Used to detect hot functions by number of calls within a span of milliseconds. */
+
+           var HOT_COUNT = 800,
+               HOT_SPAN = 16;
+           /** Used to indicate the type of lazy iteratees. */
+
+           var LAZY_FILTER_FLAG = 1,
+               LAZY_MAP_FLAG = 2,
+               LAZY_WHILE_FLAG = 3;
+           /** Used as references for various `Number` constants. */
+
+           var INFINITY = 1 / 0,
+               MAX_SAFE_INTEGER = 9007199254740991,
+               MAX_INTEGER = 1.7976931348623157e+308,
+               NAN = 0 / 0;
+           /** Used as references for the maximum length and index of an array. */
+
+           var MAX_ARRAY_LENGTH = 4294967295,
+               MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
+               HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;
+           /** Used to associate wrap methods with their bit flags. */
+
+           var wrapFlags = [['ary', WRAP_ARY_FLAG], ['bind', WRAP_BIND_FLAG], ['bindKey', WRAP_BIND_KEY_FLAG], ['curry', WRAP_CURRY_FLAG], ['curryRight', WRAP_CURRY_RIGHT_FLAG], ['flip', WRAP_FLIP_FLAG], ['partial', WRAP_PARTIAL_FLAG], ['partialRight', WRAP_PARTIAL_RIGHT_FLAG], ['rearg', WRAP_REARG_FLAG]];
+           /** `Object#toString` result references. */
+
+           var argsTag = '[object Arguments]',
+               arrayTag = '[object Array]',
+               asyncTag = '[object AsyncFunction]',
+               boolTag = '[object Boolean]',
+               dateTag = '[object Date]',
+               domExcTag = '[object DOMException]',
+               errorTag = '[object Error]',
+               funcTag = '[object Function]',
+               genTag = '[object GeneratorFunction]',
+               mapTag = '[object Map]',
+               numberTag = '[object Number]',
+               nullTag = '[object Null]',
+               objectTag = '[object Object]',
+               promiseTag = '[object Promise]',
+               proxyTag = '[object Proxy]',
+               regexpTag = '[object RegExp]',
+               setTag = '[object Set]',
+               stringTag = '[object String]',
+               symbolTag = '[object Symbol]',
+               undefinedTag = '[object Undefined]',
+               weakMapTag = '[object WeakMap]',
+               weakSetTag = '[object WeakSet]';
+           var arrayBufferTag = '[object ArrayBuffer]',
+               dataViewTag = '[object DataView]',
+               float32Tag = '[object Float32Array]',
+               float64Tag = '[object Float64Array]',
+               int8Tag = '[object Int8Array]',
+               int16Tag = '[object Int16Array]',
+               int32Tag = '[object Int32Array]',
+               uint8Tag = '[object Uint8Array]',
+               uint8ClampedTag = '[object Uint8ClampedArray]',
+               uint16Tag = '[object Uint16Array]',
+               uint32Tag = '[object Uint32Array]';
+           /** Used to match empty string literals in compiled template source. */
+
+           var reEmptyStringLeading = /\b__p \+= '';/g,
+               reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
+               reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;
+           /** Used to match HTML entities and HTML characters. */
+
+           var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,
+               reUnescapedHtml = /[&<>"']/g,
+               reHasEscapedHtml = RegExp(reEscapedHtml.source),
+               reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
+           /** Used to match template delimiters. */
+
+           var reEscape = /<%-([\s\S]+?)%>/g,
+               reEvaluate = /<%([\s\S]+?)%>/g,
+               reInterpolate = /<%=([\s\S]+?)%>/g;
+           /** Used to match property names within property paths. */
+
+           var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/,
+               reIsPlainProp = /^\w*$/,
+               rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;
+           /**
+            * Used to match `RegExp`
+            * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
+            */
+
+           var reRegExpChar = /[\\^$.*+?()[\]{}|]/g,
+               reHasRegExpChar = RegExp(reRegExpChar.source);
+           /** Used to match leading whitespace. */
+
+           var reTrimStart = /^\s+/;
+           /** Used to match a single whitespace character. */
+
+           var reWhitespace = /\s/;
+           /** Used to match wrap detail comments. */
+
+           var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/,
+               reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/,
+               reSplitDetails = /,? & /;
+           /** Used to match words composed of alphanumeric characters. */
+
+           var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;
+           /**
+            * Used to validate the `validate` option in `_.template` variable.
+            *
+            * Forbids characters which could potentially change the meaning of the function argument definition:
+            * - "()," (modification of function parameters)
+            * - "=" (default value)
+            * - "[]{}" (destructuring of function parameters)
+            * - "/" (beginning of a comment)
+            * - whitespace
+            */
+
+           var reForbiddenIdentifierChars = /[()=,{}\[\]\/\s]/;
+           /** Used to match backslashes in property paths. */
+
+           var reEscapeChar = /\\(\\)?/g;
+           /**
+            * Used to match
+            * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
+            */
+
+           var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
+           /** Used to match `RegExp` flags from their coerced string values. */
+
+           var reFlags = /\w*$/;
+           /** Used to detect bad signed hexadecimal string values. */
+
+           var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
+           /** Used to detect binary string values. */
+
+           var reIsBinary = /^0b[01]+$/i;
+           /** Used to detect host constructors (Safari). */
+
+           var reIsHostCtor = /^\[object .+?Constructor\]$/;
+           /** Used to detect octal string values. */
+
+           var reIsOctal = /^0o[0-7]+$/i;
+           /** Used to detect unsigned integer values. */
+
+           var reIsUint = /^(?:0|[1-9]\d*)$/;
+           /** Used to match Latin Unicode letters (excluding mathematical operators). */
+
+           var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
+           /** Used to ensure capturing order of template delimiters. */
+
+           var reNoMatch = /($^)/;
+           /** Used to match unescaped characters in compiled string literals. */
+
+           var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
+           /** Used to compose unicode character classes. */
+
+           var rsAstralRange = "\\ud800-\\udfff",
+               rsComboMarksRange = "\\u0300-\\u036f",
+               reComboHalfMarksRange = "\\ufe20-\\ufe2f",
+               rsComboSymbolsRange = "\\u20d0-\\u20ff",
+               rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,
+               rsDingbatRange = "\\u2700-\\u27bf",
+               rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
+               rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
+               rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
+               rsPunctuationRange = "\\u2000-\\u206f",
+               rsSpaceRange = " \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000",
+               rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
+               rsVarRange = "\\ufe0e\\ufe0f",
+               rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;
+           /** Used to compose unicode capture groups. */
+
+           var rsApos = "['\u2019]",
+               rsAstral = '[' + rsAstralRange + ']',
+               rsBreak = '[' + rsBreakRange + ']',
+               rsCombo = '[' + rsComboRange + ']',
+               rsDigits = '\\d+',
+               rsDingbat = '[' + rsDingbatRange + ']',
+               rsLower = '[' + rsLowerRange + ']',
+               rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
+               rsFitz = "\\ud83c[\\udffb-\\udfff]",
+               rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
+               rsNonAstral = '[^' + rsAstralRange + ']',
+               rsRegional = "(?:\\ud83c[\\udde6-\\uddff]){2}",
+               rsSurrPair = "[\\ud800-\\udbff][\\udc00-\\udfff]",
+               rsUpper = '[' + rsUpperRange + ']',
+               rsZWJ = "\\u200d";
+           /** Used to compose unicode regexes. */
+
+           var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',
+               rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',
+               rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
+               rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
+               reOptMod = rsModifier + '?',
+               rsOptVar = '[' + rsVarRange + ']?',
+               rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
+               rsOrdLower = '\\d*(?:1st|2nd|3rd|(?![123])\\dth)(?=\\b|[A-Z_])',
+               rsOrdUpper = '\\d*(?:1ST|2ND|3RD|(?![123])\\dTH)(?=\\b|[a-z_])',
+               rsSeq = rsOptVar + reOptMod + rsOptJoin,
+               rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
+               rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
+           /** Used to match apostrophes. */
+
+           var reApos = RegExp(rsApos, 'g');
+           /**
+            * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
+            * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
+            */
+
+           var reComboMark = RegExp(rsCombo, 'g');
+           /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
+
+           var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+           /** Used to match complex or compound words. */
+
+           var reUnicodeWord = RegExp([rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')', rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, rsUpper + '+' + rsOptContrUpper, rsOrdUpper, rsOrdLower, rsDigits, rsEmoji].join('|'), 'g');
+           /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
+
+           var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');
+           /** Used to detect strings that need a more robust regexp to match words. */
+
+           var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;
+           /** Used to assign default `context` object properties. */
+
+           var contextProps = ['Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array', 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object', 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array', 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap', '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'];
+           /** Used to make template sourceURLs easier to identify. */
+
+           var templateCounter = -1;
+           /** Used to identify `toStringTag` values of typed arrays. */
+
+           var typedArrayTags = {};
+           typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = typedArrayTags[uint32Tag] = true;
+           typedArrayTags[argsTag] = typedArrayTags[arrayTag] = typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = typedArrayTags[errorTag] = typedArrayTags[funcTag] = typedArrayTags[mapTag] = typedArrayTags[numberTag] = typedArrayTags[objectTag] = typedArrayTags[regexpTag] = typedArrayTags[setTag] = typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false;
+           /** Used to identify `toStringTag` values supported by `_.clone`. */
+
+           var cloneableTags = {};
+           cloneableTags[argsTag] = cloneableTags[arrayTag] = cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] = cloneableTags[boolTag] = cloneableTags[dateTag] = cloneableTags[float32Tag] = cloneableTags[float64Tag] = cloneableTags[int8Tag] = cloneableTags[int16Tag] = cloneableTags[int32Tag] = cloneableTags[mapTag] = cloneableTags[numberTag] = cloneableTags[objectTag] = cloneableTags[regexpTag] = cloneableTags[setTag] = cloneableTags[stringTag] = cloneableTags[symbolTag] = cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] = cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
+           cloneableTags[errorTag] = cloneableTags[funcTag] = cloneableTags[weakMapTag] = false;
+           /** Used to map Latin Unicode letters to basic Latin letters. */
+
+           var deburredLetters = {
+             // Latin-1 Supplement block.
+             '\xc0': 'A',
+             '\xc1': 'A',
+             '\xc2': 'A',
+             '\xc3': 'A',
+             '\xc4': 'A',
+             '\xc5': 'A',
+             '\xe0': 'a',
+             '\xe1': 'a',
+             '\xe2': 'a',
+             '\xe3': 'a',
+             '\xe4': 'a',
+             '\xe5': 'a',
+             '\xc7': 'C',
+             '\xe7': 'c',
+             '\xd0': 'D',
+             '\xf0': 'd',
+             '\xc8': 'E',
+             '\xc9': 'E',
+             '\xca': 'E',
+             '\xcb': 'E',
+             '\xe8': 'e',
+             '\xe9': 'e',
+             '\xea': 'e',
+             '\xeb': 'e',
+             '\xcc': 'I',
+             '\xcd': 'I',
+             '\xce': 'I',
+             '\xcf': 'I',
+             '\xec': 'i',
+             '\xed': 'i',
+             '\xee': 'i',
+             '\xef': 'i',
+             '\xd1': 'N',
+             '\xf1': 'n',
+             '\xd2': 'O',
+             '\xd3': 'O',
+             '\xd4': 'O',
+             '\xd5': 'O',
+             '\xd6': 'O',
+             '\xd8': 'O',
+             '\xf2': 'o',
+             '\xf3': 'o',
+             '\xf4': 'o',
+             '\xf5': 'o',
+             '\xf6': 'o',
+             '\xf8': 'o',
+             '\xd9': 'U',
+             '\xda': 'U',
+             '\xdb': 'U',
+             '\xdc': 'U',
+             '\xf9': 'u',
+             '\xfa': 'u',
+             '\xfb': 'u',
+             '\xfc': 'u',
+             '\xdd': 'Y',
+             '\xfd': 'y',
+             '\xff': 'y',
+             '\xc6': 'Ae',
+             '\xe6': 'ae',
+             '\xde': 'Th',
+             '\xfe': 'th',
+             '\xdf': 'ss',
+             // Latin Extended-A block.
+             "\u0100": 'A',
+             "\u0102": 'A',
+             "\u0104": 'A',
+             "\u0101": 'a',
+             "\u0103": 'a',
+             "\u0105": 'a',
+             "\u0106": 'C',
+             "\u0108": 'C',
+             "\u010A": 'C',
+             "\u010C": 'C',
+             "\u0107": 'c',
+             "\u0109": 'c',
+             "\u010B": 'c',
+             "\u010D": 'c',
+             "\u010E": 'D',
+             "\u0110": 'D',
+             "\u010F": 'd',
+             "\u0111": 'd',
+             "\u0112": 'E',
+             "\u0114": 'E',
+             "\u0116": 'E',
+             "\u0118": 'E',
+             "\u011A": 'E',
+             "\u0113": 'e',
+             "\u0115": 'e',
+             "\u0117": 'e',
+             "\u0119": 'e',
+             "\u011B": 'e',
+             "\u011C": 'G',
+             "\u011E": 'G',
+             "\u0120": 'G',
+             "\u0122": 'G',
+             "\u011D": 'g',
+             "\u011F": 'g',
+             "\u0121": 'g',
+             "\u0123": 'g',
+             "\u0124": 'H',
+             "\u0126": 'H',
+             "\u0125": 'h',
+             "\u0127": 'h',
+             "\u0128": 'I',
+             "\u012A": 'I',
+             "\u012C": 'I',
+             "\u012E": 'I',
+             "\u0130": 'I',
+             "\u0129": 'i',
+             "\u012B": 'i',
+             "\u012D": 'i',
+             "\u012F": 'i',
+             "\u0131": 'i',
+             "\u0134": 'J',
+             "\u0135": 'j',
+             "\u0136": 'K',
+             "\u0137": 'k',
+             "\u0138": 'k',
+             "\u0139": 'L',
+             "\u013B": 'L',
+             "\u013D": 'L',
+             "\u013F": 'L',
+             "\u0141": 'L',
+             "\u013A": 'l',
+             "\u013C": 'l',
+             "\u013E": 'l',
+             "\u0140": 'l',
+             "\u0142": 'l',
+             "\u0143": 'N',
+             "\u0145": 'N',
+             "\u0147": 'N',
+             "\u014A": 'N',
+             "\u0144": 'n',
+             "\u0146": 'n',
+             "\u0148": 'n',
+             "\u014B": 'n',
+             "\u014C": 'O',
+             "\u014E": 'O',
+             "\u0150": 'O',
+             "\u014D": 'o',
+             "\u014F": 'o',
+             "\u0151": 'o',
+             "\u0154": 'R',
+             "\u0156": 'R',
+             "\u0158": 'R',
+             "\u0155": 'r',
+             "\u0157": 'r',
+             "\u0159": 'r',
+             "\u015A": 'S',
+             "\u015C": 'S',
+             "\u015E": 'S',
+             "\u0160": 'S',
+             "\u015B": 's',
+             "\u015D": 's',
+             "\u015F": 's',
+             "\u0161": 's',
+             "\u0162": 'T',
+             "\u0164": 'T',
+             "\u0166": 'T',
+             "\u0163": 't',
+             "\u0165": 't',
+             "\u0167": 't',
+             "\u0168": 'U',
+             "\u016A": 'U',
+             "\u016C": 'U',
+             "\u016E": 'U',
+             "\u0170": 'U',
+             "\u0172": 'U',
+             "\u0169": 'u',
+             "\u016B": 'u',
+             "\u016D": 'u',
+             "\u016F": 'u',
+             "\u0171": 'u',
+             "\u0173": 'u',
+             "\u0174": 'W',
+             "\u0175": 'w',
+             "\u0176": 'Y',
+             "\u0177": 'y',
+             "\u0178": 'Y',
+             "\u0179": 'Z',
+             "\u017B": 'Z',
+             "\u017D": 'Z',
+             "\u017A": 'z',
+             "\u017C": 'z',
+             "\u017E": 'z',
+             "\u0132": 'IJ',
+             "\u0133": 'ij',
+             "\u0152": 'Oe',
+             "\u0153": 'oe',
+             "\u0149": "'n",
+             "\u017F": 's'
+           };
+           /** Used to map characters to HTML entities. */
+
+           var htmlEscapes = {
+             '&': '&amp;',
+             '<': '&lt;',
+             '>': '&gt;',
+             '"': '&quot;',
+             "'": '&#39;'
+           };
+           /** Used to map HTML entities to characters. */
+
+           var htmlUnescapes = {
+             '&amp;': '&',
+             '&lt;': '<',
+             '&gt;': '>',
+             '&quot;': '"',
+             '&#39;': "'"
+           };
+           /** Used to escape characters for inclusion in compiled string literals. */
+
+           var stringEscapes = {
+             '\\': '\\',
+             "'": "'",
+             '\n': 'n',
+             '\r': 'r',
+             "\u2028": 'u2028',
+             "\u2029": 'u2029'
+           };
+           /** Built-in method references without a dependency on `root`. */
+
+           var freeParseFloat = parseFloat,
+               freeParseInt = parseInt;
+           /** Detect free variable `global` from Node.js. */
+
+           var freeGlobal = _typeof(commonjsGlobal) == 'object' && commonjsGlobal && commonjsGlobal.Object === Object && commonjsGlobal;
+           /** Detect free variable `self`. */
+
+           var freeSelf = (typeof self === "undefined" ? "undefined" : _typeof(self)) == 'object' && self && self.Object === Object && self;
+           /** Used as a reference to the global object. */
+
+           var root = freeGlobal || freeSelf || Function('return this')();
+           /** Detect free variable `exports`. */
+
+           var freeExports = exports && !exports.nodeType && exports;
+           /** Detect free variable `module`. */
+
+           var freeModule = freeExports && 'object' == 'object' && module && !module.nodeType && module;
+           /** Detect the popular CommonJS extension `module.exports`. */
+
+           var moduleExports = freeModule && freeModule.exports === freeExports;
+           /** Detect free variable `process` from Node.js. */
+
+           var freeProcess = moduleExports && freeGlobal.process;
+           /** Used to access faster Node.js helpers. */
+
+           var nodeUtil = function () {
+             try {
+               // Use `util.types` for Node.js 10+.
+               var types = freeModule && freeModule.require && freeModule.require('util').types;
+
+               if (types) {
+                 return types;
+               } // Legacy `process.binding('util')` for Node.js < 10.
+
+
+               return freeProcess && freeProcess.binding && freeProcess.binding('util');
+             } catch (e) {}
+           }();
+           /* Node.js helper references. */
+
+
+           var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,
+               nodeIsDate = nodeUtil && nodeUtil.isDate,
+               nodeIsMap = nodeUtil && nodeUtil.isMap,
+               nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,
+               nodeIsSet = nodeUtil && nodeUtil.isSet,
+               nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;
+           /*--------------------------------------------------------------------------*/
+
+           /**
+            * A faster alternative to `Function#apply`, this function invokes `func`
+            * with the `this` binding of `thisArg` and the arguments of `args`.
+            *
+            * @private
+            * @param {Function} func The function to invoke.
+            * @param {*} thisArg The `this` binding of `func`.
+            * @param {Array} args The arguments to invoke `func` with.
+            * @returns {*} Returns the result of `func`.
+            */
+
+           function apply(func, thisArg, args) {
+             switch (args.length) {
+               case 0:
+                 return func.call(thisArg);
+
+               case 1:
+                 return func.call(thisArg, args[0]);
+
+               case 2:
+                 return func.call(thisArg, args[0], args[1]);
+
+               case 3:
+                 return func.call(thisArg, args[0], args[1], args[2]);
+             }
+
+             return func.apply(thisArg, args);
+           }
+           /**
+            * A specialized version of `baseAggregator` for arrays.
+            *
+            * @private
+            * @param {Array} [array] The array to iterate over.
+            * @param {Function} setter The function to set `accumulator` values.
+            * @param {Function} iteratee The iteratee to transform keys.
+            * @param {Object} accumulator The initial aggregated object.
+            * @returns {Function} Returns `accumulator`.
+            */
+
+
+           function arrayAggregator(array, setter, iteratee, accumulator) {
+             var index = -1,
+                 length = array == null ? 0 : array.length;
+
+             while (++index < length) {
+               var value = array[index];
+               setter(accumulator, value, iteratee(value), array);
+             }
+
+             return accumulator;
+           }
+           /**
+            * A specialized version of `_.forEach` for arrays without support for
+            * iteratee shorthands.
+            *
+            * @private
+            * @param {Array} [array] The array to iterate over.
+            * @param {Function} iteratee The function invoked per iteration.
+            * @returns {Array} Returns `array`.
+            */
+
+
+           function arrayEach(array, iteratee) {
+             var index = -1,
+                 length = array == null ? 0 : array.length;
+
+             while (++index < length) {
+               if (iteratee(array[index], index, array) === false) {
+                 break;
+               }
+             }
+
+             return array;
+           }
+           /**
+            * A specialized version of `_.forEachRight` for arrays without support for
+            * iteratee shorthands.
+            *
+            * @private
+            * @param {Array} [array] The array to iterate over.
+            * @param {Function} iteratee The function invoked per iteration.
+            * @returns {Array} Returns `array`.
+            */
+
+
+           function arrayEachRight(array, iteratee) {
+             var length = array == null ? 0 : array.length;
+
+             while (length--) {
+               if (iteratee(array[length], length, array) === false) {
+                 break;
+               }
+             }
+
+             return array;
+           }
+           /**
+            * A specialized version of `_.every` for arrays without support for
+            * iteratee shorthands.
+            *
+            * @private
+            * @param {Array} [array] The array to iterate over.
+            * @param {Function} predicate The function invoked per iteration.
+            * @returns {boolean} Returns `true` if all elements pass the predicate check,
+            *  else `false`.
+            */
+
+
+           function arrayEvery(array, predicate) {
+             var index = -1,
+                 length = array == null ? 0 : array.length;
+
+             while (++index < length) {
+               if (!predicate(array[index], index, array)) {
+                 return false;
+               }
+             }
+
+             return true;
+           }
+           /**
+            * A specialized version of `_.filter` for arrays without support for
+            * iteratee shorthands.
+            *
+            * @private
+            * @param {Array} [array] The array to iterate over.
+            * @param {Function} predicate The function invoked per iteration.
+            * @returns {Array} Returns the new filtered array.
+            */
+
+
+           function arrayFilter(array, predicate) {
+             var index = -1,
+                 length = array == null ? 0 : array.length,
+                 resIndex = 0,
+                 result = [];
+
+             while (++index < length) {
+               var value = array[index];
+
+               if (predicate(value, index, array)) {
+                 result[resIndex++] = value;
+               }
+             }
+
+             return result;
+           }
+           /**
+            * A specialized version of `_.includes` for arrays without support for
+            * specifying an index to search from.
+            *
+            * @private
+            * @param {Array} [array] The array to inspect.
+            * @param {*} target The value to search for.
+            * @returns {boolean} Returns `true` if `target` is found, else `false`.
+            */
+
+
+           function arrayIncludes(array, value) {
+             var length = array == null ? 0 : array.length;
+             return !!length && baseIndexOf(array, value, 0) > -1;
+           }
+           /**
+            * This function is like `arrayIncludes` except that it accepts a comparator.
+            *
+            * @private
+            * @param {Array} [array] The array to inspect.
+            * @param {*} target The value to search for.
+            * @param {Function} comparator The comparator invoked per element.
+            * @returns {boolean} Returns `true` if `target` is found, else `false`.
+            */
+
+
+           function arrayIncludesWith(array, value, comparator) {
+             var index = -1,
+                 length = array == null ? 0 : array.length;
+
+             while (++index < length) {
+               if (comparator(value, array[index])) {
+                 return true;
+               }
+             }
+
+             return false;
+           }
+           /**
+            * A specialized version of `_.map` for arrays without support for iteratee
+            * shorthands.
+            *
+            * @private
+            * @param {Array} [array] The array to iterate over.
+            * @param {Function} iteratee The function invoked per iteration.
+            * @returns {Array} Returns the new mapped array.
+            */
+
+
+           function arrayMap(array, iteratee) {
+             var index = -1,
+                 length = array == null ? 0 : array.length,
+                 result = Array(length);
+
+             while (++index < length) {
+               result[index] = iteratee(array[index], index, array);
+             }
+
+             return result;
+           }
+           /**
+            * Appends the elements of `values` to `array`.
+            *
+            * @private
+            * @param {Array} array The array to modify.
+            * @param {Array} values The values to append.
+            * @returns {Array} Returns `array`.
+            */
+
+
+           function arrayPush(array, values) {
+             var index = -1,
+                 length = values.length,
+                 offset = array.length;
+
+             while (++index < length) {
+               array[offset + index] = values[index];
+             }
+
+             return array;
+           }
+           /**
+            * A specialized version of `_.reduce` for arrays without support for
+            * iteratee shorthands.
+            *
+            * @private
+            * @param {Array} [array] The array to iterate over.
+            * @param {Function} iteratee The function invoked per iteration.
+            * @param {*} [accumulator] The initial value.
+            * @param {boolean} [initAccum] Specify using the first element of `array` as
+            *  the initial value.
+            * @returns {*} Returns the accumulated value.
+            */
+
+
+           function arrayReduce(array, iteratee, accumulator, initAccum) {
+             var index = -1,
+                 length = array == null ? 0 : array.length;
+
+             if (initAccum && length) {
+               accumulator = array[++index];
+             }
+
+             while (++index < length) {
+               accumulator = iteratee(accumulator, array[index], index, array);
+             }
+
+             return accumulator;
+           }
+           /**
+            * A specialized version of `_.reduceRight` for arrays without support for
+            * iteratee shorthands.
+            *
+            * @private
+            * @param {Array} [array] The array to iterate over.
+            * @param {Function} iteratee The function invoked per iteration.
+            * @param {*} [accumulator] The initial value.
+            * @param {boolean} [initAccum] Specify using the last element of `array` as
+            *  the initial value.
+            * @returns {*} Returns the accumulated value.
+            */
+
+
+           function arrayReduceRight(array, iteratee, accumulator, initAccum) {
+             var length = array == null ? 0 : array.length;
+
+             if (initAccum && length) {
+               accumulator = array[--length];
+             }
+
+             while (length--) {
+               accumulator = iteratee(accumulator, array[length], length, array);
+             }
+
+             return accumulator;
+           }
+           /**
+            * A specialized version of `_.some` for arrays without support for iteratee
+            * shorthands.
+            *
+            * @private
+            * @param {Array} [array] The array to iterate over.
+            * @param {Function} predicate The function invoked per iteration.
+            * @returns {boolean} Returns `true` if any element passes the predicate check,
+            *  else `false`.
+            */
+
+
+           function arraySome(array, predicate) {
+             var index = -1,
+                 length = array == null ? 0 : array.length;
+
+             while (++index < length) {
+               if (predicate(array[index], index, array)) {
+                 return true;
+               }
+             }
+
+             return false;
+           }
+           /**
+            * Gets the size of an ASCII `string`.
+            *
+            * @private
+            * @param {string} string The string inspect.
+            * @returns {number} Returns the string size.
+            */
+
+
+           var asciiSize = baseProperty('length');
+           /**
+            * Converts an ASCII `string` to an array.
+            *
+            * @private
+            * @param {string} string The string to convert.
+            * @returns {Array} Returns the converted array.
+            */
+
+           function asciiToArray(string) {
+             return string.split('');
+           }
+           /**
+            * Splits an ASCII `string` into an array of its words.
+            *
+            * @private
+            * @param {string} The string to inspect.
+            * @returns {Array} Returns the words of `string`.
+            */
+
+
+           function asciiWords(string) {
+             return string.match(reAsciiWord) || [];
+           }
+           /**
+            * The base implementation of methods like `_.findKey` and `_.findLastKey`,
+            * without support for iteratee shorthands, which iterates over `collection`
+            * using `eachFunc`.
+            *
+            * @private
+            * @param {Array|Object} collection The collection to inspect.
+            * @param {Function} predicate The function invoked per iteration.
+            * @param {Function} eachFunc The function to iterate over `collection`.
+            * @returns {*} Returns the found element or its key, else `undefined`.
+            */
+
+
+           function baseFindKey(collection, predicate, eachFunc) {
+             var result;
+             eachFunc(collection, function (value, key, collection) {
+               if (predicate(value, key, collection)) {
+                 result = key;
+                 return false;
+               }
+             });
+             return result;
+           }
+           /**
+            * The base implementation of `_.findIndex` and `_.findLastIndex` without
+            * support for iteratee shorthands.
+            *
+            * @private
+            * @param {Array} array The array to inspect.
+            * @param {Function} predicate The function invoked per iteration.
+            * @param {number} fromIndex The index to search from.
+            * @param {boolean} [fromRight] Specify iterating from right to left.
+            * @returns {number} Returns the index of the matched value, else `-1`.
+            */
+
+
+           function baseFindIndex(array, predicate, fromIndex, fromRight) {
+             var length = array.length,
+                 index = fromIndex + (fromRight ? 1 : -1);
+
+             while (fromRight ? index-- : ++index < length) {
+               if (predicate(array[index], index, array)) {
+                 return index;
+               }
+             }
+
+             return -1;
+           }
+           /**
+            * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
+            *
+            * @private
+            * @param {Array} array The array to inspect.
+            * @param {*} value The value to search for.
+            * @param {number} fromIndex The index to search from.
+            * @returns {number} Returns the index of the matched value, else `-1`.
+            */
+
+
+           function baseIndexOf(array, value, fromIndex) {
+             return value === value ? strictIndexOf(array, value, fromIndex) : baseFindIndex(array, baseIsNaN, fromIndex);
+           }
+           /**
+            * This function is like `baseIndexOf` except that it accepts a comparator.
+            *
+            * @private
+            * @param {Array} array The array to inspect.
+            * @param {*} value The value to search for.
+            * @param {number} fromIndex The index to search from.
+            * @param {Function} comparator The comparator invoked per element.
+            * @returns {number} Returns the index of the matched value, else `-1`.
+            */
+
+
+           function baseIndexOfWith(array, value, fromIndex, comparator) {
+             var index = fromIndex - 1,
+                 length = array.length;
+
+             while (++index < length) {
+               if (comparator(array[index], value)) {
+                 return index;
+               }
+             }
+
+             return -1;
+           }
+           /**
+            * The base implementation of `_.isNaN` without support for number objects.
+            *
+            * @private
+            * @param {*} value The value to check.
+            * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
+            */
+
+
+           function baseIsNaN(value) {
+             return value !== value;
+           }
+           /**
+            * The base implementation of `_.mean` and `_.meanBy` without support for
+            * iteratee shorthands.
+            *
+            * @private
+            * @param {Array} array The array to iterate over.
+            * @param {Function} iteratee The function invoked per iteration.
+            * @returns {number} Returns the mean.
+            */
+
+
+           function baseMean(array, iteratee) {
+             var length = array == null ? 0 : array.length;
+             return length ? baseSum(array, iteratee) / length : NAN;
+           }
+           /**
+            * The base implementation of `_.property` without support for deep paths.
+            *
+            * @private
+            * @param {string} key The key of the property to get.
+            * @returns {Function} Returns the new accessor function.
+            */
+
+
+           function baseProperty(key) {
+             return function (object) {
+               return object == null ? undefined$1 : object[key];
+             };
+           }
+           /**
+            * The base implementation of `_.propertyOf` without support for deep paths.
+            *
+            * @private
+            * @param {Object} object The object to query.
+            * @returns {Function} Returns the new accessor function.
+            */
+
+
+           function basePropertyOf(object) {
+             return function (key) {
+               return object == null ? undefined$1 : object[key];
+             };
+           }
+           /**
+            * The base implementation of `_.reduce` and `_.reduceRight`, without support
+            * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
+            *
+            * @private
+            * @param {Array|Object} collection The collection to iterate over.
+            * @param {Function} iteratee The function invoked per iteration.
+            * @param {*} accumulator The initial value.
+            * @param {boolean} initAccum Specify using the first or last element of
+            *  `collection` as the initial value.
+            * @param {Function} eachFunc The function to iterate over `collection`.
+            * @returns {*} Returns the accumulated value.
+            */
+
+
+           function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
+             eachFunc(collection, function (value, index, collection) {
+               accumulator = initAccum ? (initAccum = false, value) : iteratee(accumulator, value, index, collection);
+             });
+             return accumulator;
+           }
+           /**
+            * The base implementation of `_.sortBy` which uses `comparer` to define the
+            * sort order of `array` and replaces criteria objects with their corresponding
+            * values.
+            *
+            * @private
+            * @param {Array} array The array to sort.
+            * @param {Function} comparer The function to define sort order.
+            * @returns {Array} Returns `array`.
+            */
+
+
+           function baseSortBy(array, comparer) {
+             var length = array.length;
+             array.sort(comparer);
+
+             while (length--) {
+               array[length] = array[length].value;
+             }
+
+             return array;
+           }
+           /**
+            * The base implementation of `_.sum` and `_.sumBy` without support for
+            * iteratee shorthands.
+            *
+            * @private
+            * @param {Array} array The array to iterate over.
+            * @param {Function} iteratee The function invoked per iteration.
+            * @returns {number} Returns the sum.
+            */
+
+
+           function baseSum(array, iteratee) {
+             var result,
+                 index = -1,
+                 length = array.length;
+
+             while (++index < length) {
+               var current = iteratee(array[index]);
+
+               if (current !== undefined$1) {
+                 result = result === undefined$1 ? current : result + current;
+               }
+             }
+
+             return result;
+           }
+           /**
+            * The base implementation of `_.times` without support for iteratee shorthands
+            * or max array length checks.
+            *
+            * @private
+            * @param {number} n The number of times to invoke `iteratee`.
+            * @param {Function} iteratee The function invoked per iteration.
+            * @returns {Array} Returns the array of results.
+            */
+
+
+           function baseTimes(n, iteratee) {
+             var index = -1,
+                 result = Array(n);
+
+             while (++index < n) {
+               result[index] = iteratee(index);
+             }
+
+             return result;
+           }
+           /**
+            * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
+            * of key-value pairs for `object` corresponding to the property names of `props`.
+            *
+            * @private
+            * @param {Object} object The object to query.
+            * @param {Array} props The property names to get values for.
+            * @returns {Object} Returns the key-value pairs.
+            */
+
+
+           function baseToPairs(object, props) {
+             return arrayMap(props, function (key) {
+               return [key, object[key]];
+             });
+           }
+           /**
+            * The base implementation of `_.trim`.
+            *
+            * @private
+            * @param {string} string The string to trim.
+            * @returns {string} Returns the trimmed string.
+            */
+
+
+           function baseTrim(string) {
+             return string ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '') : string;
+           }
+           /**
+            * The base implementation of `_.unary` without support for storing metadata.
+            *
+            * @private
+            * @param {Function} func The function to cap arguments for.
+            * @returns {Function} Returns the new capped function.
+            */
+
+
+           function baseUnary(func) {
+             return function (value) {
+               return func(value);
+             };
+           }
+           /**
+            * The base implementation of `_.values` and `_.valuesIn` which creates an
+            * array of `object` property values corresponding to the property names
+            * of `props`.
+            *
+            * @private
+            * @param {Object} object The object to query.
+            * @param {Array} props The property names to get values for.
+            * @returns {Object} Returns the array of property values.
+            */
+
+
+           function baseValues(object, props) {
+             return arrayMap(props, function (key) {
+               return object[key];
+             });
+           }
+           /**
+            * Checks if a `cache` value for `key` exists.
+            *
+            * @private
+            * @param {Object} cache The cache to query.
+            * @param {string} key The key of the entry to check.
+            * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
+            */
+
+
+           function cacheHas(cache, key) {
+             return cache.has(key);
+           }
+           /**
+            * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
+            * that is not found in the character symbols.
+            *
+            * @private
+            * @param {Array} strSymbols The string symbols to inspect.
+            * @param {Array} chrSymbols The character symbols to find.
+            * @returns {number} Returns the index of the first unmatched string symbol.
+            */
+
+
+           function charsStartIndex(strSymbols, chrSymbols) {
+             var index = -1,
+                 length = strSymbols.length;
+
+             while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
+
+             return index;
+           }
+           /**
+            * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
+            * that is not found in the character symbols.
+            *
+            * @private
+            * @param {Array} strSymbols The string symbols to inspect.
+            * @param {Array} chrSymbols The character symbols to find.
+            * @returns {number} Returns the index of the last unmatched string symbol.
+            */
+
+
+           function charsEndIndex(strSymbols, chrSymbols) {
+             var index = strSymbols.length;
+
+             while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
+
+             return index;
+           }
+           /**
+            * Gets the number of `placeholder` occurrences in `array`.
+            *
+            * @private
+            * @param {Array} array The array to inspect.
+            * @param {*} placeholder The placeholder to search for.
+            * @returns {number} Returns the placeholder count.
+            */
+
+
+           function countHolders(array, placeholder) {
+             var length = array.length,
+                 result = 0;
+
+             while (length--) {
+               if (array[length] === placeholder) {
+                 ++result;
+               }
+             }
+
+             return result;
+           }
+           /**
+            * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
+            * letters to basic Latin letters.
+            *
+            * @private
+            * @param {string} letter The matched letter to deburr.
+            * @returns {string} Returns the deburred letter.
+            */
+
+
+           var deburrLetter = basePropertyOf(deburredLetters);
+           /**
+            * Used by `_.escape` to convert characters to HTML entities.
+            *
+            * @private
+            * @param {string} chr The matched character to escape.
+            * @returns {string} Returns the escaped character.
+            */
+
+           var escapeHtmlChar = basePropertyOf(htmlEscapes);
+           /**
+            * Used by `_.template` to escape characters for inclusion in compiled string literals.
+            *
+            * @private
+            * @param {string} chr The matched character to escape.
+            * @returns {string} Returns the escaped character.
+            */
+
+           function escapeStringChar(chr) {
+             return '\\' + stringEscapes[chr];
+           }
+           /**
+            * Gets the value at `key` of `object`.
+            *
+            * @private
+            * @param {Object} [object] The object to query.
+            * @param {string} key The key of the property to get.
+            * @returns {*} Returns the property value.
+            */
+
+
+           function getValue(object, key) {
+             return object == null ? undefined$1 : object[key];
+           }
+           /**
+            * Checks if `string` contains Unicode symbols.
+            *
+            * @private
+            * @param {string} string The string to inspect.
+            * @returns {boolean} Returns `true` if a symbol is found, else `false`.
+            */
+
+
+           function hasUnicode(string) {
+             return reHasUnicode.test(string);
+           }
+           /**
+            * Checks if `string` contains a word composed of Unicode symbols.
+            *
+            * @private
+            * @param {string} string The string to inspect.
+            * @returns {boolean} Returns `true` if a word is found, else `false`.
+            */
+
+
+           function hasUnicodeWord(string) {
+             return reHasUnicodeWord.test(string);
+           }
+           /**
+            * Converts `iterator` to an array.
+            *
+            * @private
+            * @param {Object} iterator The iterator to convert.
+            * @returns {Array} Returns the converted array.
+            */
+
+
+           function iteratorToArray(iterator) {
+             var data,
+                 result = [];
+
+             while (!(data = iterator.next()).done) {
+               result.push(data.value);
+             }
+
+             return result;
+           }
+           /**
+            * Converts `map` to its key-value pairs.
+            *
+            * @private
+            * @param {Object} map The map to convert.
+            * @returns {Array} Returns the key-value pairs.
+            */
+
+
+           function mapToArray(map) {
+             var index = -1,
+                 result = Array(map.size);
+             map.forEach(function (value, key) {
+               result[++index] = [key, value];
+             });
+             return result;
+           }
+           /**
+            * Creates a unary function that invokes `func` with its argument transformed.
+            *
+            * @private
+            * @param {Function} func The function to wrap.
+            * @param {Function} transform The argument transform.
+            * @returns {Function} Returns the new function.
+            */
+
+
+           function overArg(func, transform) {
+             return function (arg) {
+               return func(transform(arg));
+             };
+           }
+           /**
+            * Replaces all `placeholder` elements in `array` with an internal placeholder
+            * and returns an array of their indexes.
+            *
+            * @private
+            * @param {Array} array The array to modify.
+            * @param {*} placeholder The placeholder to replace.
+            * @returns {Array} Returns the new array of placeholder indexes.
+            */
+
+
+           function replaceHolders(array, placeholder) {
+             var index = -1,
+                 length = array.length,
+                 resIndex = 0,
+                 result = [];
+
+             while (++index < length) {
+               var value = array[index];
+
+               if (value === placeholder || value === PLACEHOLDER) {
+                 array[index] = PLACEHOLDER;
+                 result[resIndex++] = index;
+               }
+             }
+
+             return result;
+           }
+           /**
+            * Converts `set` to an array of its values.
+            *
+            * @private
+            * @param {Object} set The set to convert.
+            * @returns {Array} Returns the values.
+            */
+
+
+           function setToArray(set) {
+             var index = -1,
+                 result = Array(set.size);
+             set.forEach(function (value) {
+               result[++index] = value;
+             });
+             return result;
+           }
+           /**
+            * Converts `set` to its value-value pairs.
+            *
+            * @private
+            * @param {Object} set The set to convert.
+            * @returns {Array} Returns the value-value pairs.
+            */
+
+
+           function setToPairs(set) {
+             var index = -1,
+                 result = Array(set.size);
+             set.forEach(function (value) {
+               result[++index] = [value, value];
+             });
+             return result;
+           }
+           /**
+            * A specialized version of `_.indexOf` which performs strict equality
+            * comparisons of values, i.e. `===`.
+            *
+            * @private
+            * @param {Array} array The array to inspect.
+            * @param {*} value The value to search for.
+            * @param {number} fromIndex The index to search from.
+            * @returns {number} Returns the index of the matched value, else `-1`.
+            */
+
+
+           function strictIndexOf(array, value, fromIndex) {
+             var index = fromIndex - 1,
+                 length = array.length;
+
+             while (++index < length) {
+               if (array[index] === value) {
+                 return index;
+               }
+             }
+
+             return -1;
+           }
+           /**
+            * A specialized version of `_.lastIndexOf` which performs strict equality
+            * comparisons of values, i.e. `===`.
+            *
+            * @private
+            * @param {Array} array The array to inspect.
+            * @param {*} value The value to search for.
+            * @param {number} fromIndex The index to search from.
+            * @returns {number} Returns the index of the matched value, else `-1`.
+            */
+
+
+           function strictLastIndexOf(array, value, fromIndex) {
+             var index = fromIndex + 1;
+
+             while (index--) {
+               if (array[index] === value) {
+                 return index;
+               }
+             }
+
+             return index;
+           }
+           /**
+            * Gets the number of symbols in `string`.
+            *
+            * @private
+            * @param {string} string The string to inspect.
+            * @returns {number} Returns the string size.
+            */
+
+
+           function stringSize(string) {
+             return hasUnicode(string) ? unicodeSize(string) : asciiSize(string);
+           }
+           /**
+            * Converts `string` to an array.
+            *
+            * @private
+            * @param {string} string The string to convert.
+            * @returns {Array} Returns the converted array.
+            */
+
+
+           function stringToArray(string) {
+             return hasUnicode(string) ? unicodeToArray(string) : asciiToArray(string);
+           }
+           /**
+            * 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.
+            */
+
+
+           function trimmedEndIndex(string) {
+             var index = string.length;
+
+             while (index-- && reWhitespace.test(string.charAt(index))) {}
+
+             return index;
+           }
+           /**
+            * Used by `_.unescape` to convert HTML entities to characters.
+            *
+            * @private
+            * @param {string} chr The matched character to unescape.
+            * @returns {string} Returns the unescaped character.
+            */
+
+
+           var unescapeHtmlChar = basePropertyOf(htmlUnescapes);
+           /**
+            * Gets the size of a Unicode `string`.
+            *
+            * @private
+            * @param {string} string The string inspect.
+            * @returns {number} Returns the string size.
+            */
+
+           function unicodeSize(string) {
+             var result = reUnicode.lastIndex = 0;
+
+             while (reUnicode.test(string)) {
+               ++result;
+             }
+
+             return result;
+           }
+           /**
+            * Converts a Unicode `string` to an array.
+            *
+            * @private
+            * @param {string} string The string to convert.
+            * @returns {Array} Returns the converted array.
+            */
+
+
+           function unicodeToArray(string) {
+             return string.match(reUnicode) || [];
+           }
+           /**
+            * Splits a Unicode `string` into an array of its words.
+            *
+            * @private
+            * @param {string} The string to inspect.
+            * @returns {Array} Returns the words of `string`.
+            */
+
+
+           function unicodeWords(string) {
+             return string.match(reUnicodeWord) || [];
+           }
+           /*--------------------------------------------------------------------------*/
+
+           /**
+            * Create a new pristine `lodash` function using the `context` object.
+            *
+            * @static
+            * @memberOf _
+            * @since 1.1.0
+            * @category Util
+            * @param {Object} [context=root] The context object.
+            * @returns {Function} Returns a new `lodash` function.
+            * @example
+            *
+            * _.mixin({ 'foo': _.constant('foo') });
+            *
+            * var lodash = _.runInContext();
+            * lodash.mixin({ 'bar': lodash.constant('bar') });
+            *
+            * _.isFunction(_.foo);
+            * // => true
+            * _.isFunction(_.bar);
+            * // => false
+            *
+            * lodash.isFunction(lodash.foo);
+            * // => false
+            * lodash.isFunction(lodash.bar);
+            * // => true
+            *
+            * // Create a suped-up `defer` in Node.js.
+            * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
+            */
+
+
+           var runInContext = function runInContext(context) {
+             context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));
+             /** Built-in constructor references. */
+
+             var Array = context.Array,
+                 Date = context.Date,
+                 Error = context.Error,
+                 Function = context.Function,
+                 Math = context.Math,
+                 Object = context.Object,
+                 RegExp = context.RegExp,
+                 String = context.String,
+                 TypeError = context.TypeError;
+             /** Used for built-in method references. */
+
+             var arrayProto = Array.prototype,
+                 funcProto = Function.prototype,
+                 objectProto = Object.prototype;
+             /** Used to detect overreaching core-js shims. */
+
+             var coreJsData = context['__core-js_shared__'];
+             /** Used to resolve the decompiled source of functions. */
+
+             var funcToString = funcProto.toString;
+             /** Used to check objects for own properties. */
+
+             var hasOwnProperty = objectProto.hasOwnProperty;
+             /** Used to generate unique IDs. */
+
+             var idCounter = 0;
+             /** Used to detect methods masquerading as native. */
+
+             var maskSrcKey = function () {
+               var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
+               return uid ? 'Symbol(src)_1.' + uid : '';
+             }();
+             /**
+              * Used to resolve the
+              * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+              * of values.
+              */
+
+
+             var nativeObjectToString = objectProto.toString;
+             /** Used to infer the `Object` constructor. */
+
+             var objectCtorString = funcToString.call(Object);
+             /** Used to restore the original `_` reference in `_.noConflict`. */
+
+             var oldDash = root._;
+             /** Used to detect if a method is native. */
+
+             var reIsNative = RegExp('^' + funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&').replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$');
+             /** Built-in value references. */
+
+             var Buffer = moduleExports ? context.Buffer : undefined$1,
+                 _Symbol = context.Symbol,
+                 Uint8Array = context.Uint8Array,
+                 allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined$1,
+                 getPrototype = overArg(Object.getPrototypeOf, Object),
+                 objectCreate = Object.create,
+                 propertyIsEnumerable = objectProto.propertyIsEnumerable,
+                 splice = arrayProto.splice,
+                 spreadableSymbol = _Symbol ? _Symbol.isConcatSpreadable : undefined$1,
+                 symIterator = _Symbol ? _Symbol.iterator : undefined$1,
+                 symToStringTag = _Symbol ? _Symbol.toStringTag : undefined$1;
+
+             var defineProperty = function () {
+               try {
+                 var func = getNative(Object, 'defineProperty');
+                 func({}, '', {});
+                 return func;
+               } catch (e) {}
+             }();
+             /** Mocked built-ins. */
+
+
+             var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,
+                 ctxNow = Date && Date.now !== root.Date.now && Date.now,
+                 ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;
+             /* Built-in method references for those with the same name as other `lodash` methods. */
+
+             var nativeCeil = Math.ceil,
+                 nativeFloor = Math.floor,
+                 nativeGetSymbols = Object.getOwnPropertySymbols,
+                 nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined$1,
+                 nativeIsFinite = context.isFinite,
+                 nativeJoin = arrayProto.join,
+                 nativeKeys = overArg(Object.keys, Object),
+                 nativeMax = Math.max,
+                 nativeMin = Math.min,
+                 nativeNow = Date.now,
+                 nativeParseInt = context.parseInt,
+                 nativeRandom = Math.random,
+                 nativeReverse = arrayProto.reverse;
+             /* Built-in method references that are verified to be native. */
+
+             var DataView = getNative(context, 'DataView'),
+                 Map = getNative(context, 'Map'),
+                 Promise = getNative(context, 'Promise'),
+                 Set = getNative(context, 'Set'),
+                 WeakMap = getNative(context, 'WeakMap'),
+                 nativeCreate = getNative(Object, 'create');
+             /** Used to store function metadata. */
+
+             var metaMap = WeakMap && new WeakMap();
+             /** Used to lookup unminified function names. */
+
+             var realNames = {};
+             /** Used to detect maps, sets, and weakmaps. */
+
+             var dataViewCtorString = toSource(DataView),
+                 mapCtorString = toSource(Map),
+                 promiseCtorString = toSource(Promise),
+                 setCtorString = toSource(Set),
+                 weakMapCtorString = toSource(WeakMap);
+             /** Used to convert symbols to primitives and strings. */
+
+             var symbolProto = _Symbol ? _Symbol.prototype : undefined$1,
+                 symbolValueOf = symbolProto ? symbolProto.valueOf : undefined$1,
+                 symbolToString = symbolProto ? symbolProto.toString : undefined$1;
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates a `lodash` object which wraps `value` to enable implicit method
+              * chain sequences. Methods that operate on and return arrays, collections,
+              * and functions can be chained together. Methods that retrieve a single value
+              * or may return a primitive value will automatically end the chain sequence
+              * and return the unwrapped value. Otherwise, the value must be unwrapped
+              * with `_#value`.
+              *
+              * Explicit chain sequences, which must be unwrapped with `_#value`, may be
+              * enabled using `_.chain`.
+              *
+              * The execution of chained methods is lazy, that is, it's deferred until
+              * `_#value` is implicitly or explicitly called.
+              *
+              * Lazy evaluation allows several methods to support shortcut fusion.
+              * Shortcut fusion is an optimization to merge iteratee calls; this avoids
+              * the creation of intermediate arrays and can greatly reduce the number of
+              * iteratee executions. Sections of a chain sequence qualify for shortcut
+              * fusion if the section is applied to an array and iteratees accept only
+              * one argument. The heuristic for whether a section qualifies for shortcut
+              * fusion is subject to change.
+              *
+              * Chaining is supported in custom builds as long as the `_#value` method is
+              * directly or indirectly included in the build.
+              *
+              * In addition to lodash methods, wrappers have `Array` and `String` methods.
+              *
+              * The wrapper `Array` methods are:
+              * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
+              *
+              * The wrapper `String` methods are:
+              * `replace` and `split`
+              *
+              * The wrapper methods that support shortcut fusion are:
+              * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
+              * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
+              * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
+              *
+              * The chainable wrapper methods are:
+              * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
+              * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
+              * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
+              * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
+              * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
+              * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
+              * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
+              * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
+              * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
+              * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
+              * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
+              * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
+              * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
+              * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
+              * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
+              * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
+              * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
+              * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
+              * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
+              * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
+              * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
+              * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
+              * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
+              * `zipObject`, `zipObjectDeep`, and `zipWith`
+              *
+              * The wrapper methods that are **not** chainable by default are:
+              * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
+              * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
+              * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
+              * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
+              * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
+              * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
+              * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
+              * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
+              * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
+              * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
+              * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
+              * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
+              * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
+              * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
+              * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
+              * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
+              * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
+              * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
+              * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
+              * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
+              * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
+              * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
+              * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
+              * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
+              * `upperFirst`, `value`, and `words`
+              *
+              * @name _
+              * @constructor
+              * @category Seq
+              * @param {*} value The value to wrap in a `lodash` instance.
+              * @returns {Object} Returns the new `lodash` wrapper instance.
+              * @example
+              *
+              * function square(n) {
+              *   return n * n;
+              * }
+              *
+              * var wrapped = _([1, 2, 3]);
+              *
+              * // Returns an unwrapped value.
+              * wrapped.reduce(_.add);
+              * // => 6
+              *
+              * // Returns a wrapped value.
+              * var squares = wrapped.map(square);
+              *
+              * _.isArray(squares);
+              * // => false
+              *
+              * _.isArray(squares.value());
+              * // => true
+              */
+
+             function lodash(value) {
+               if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
+                 if (value instanceof LodashWrapper) {
+                   return value;
+                 }
+
+                 if (hasOwnProperty.call(value, '__wrapped__')) {
+                   return wrapperClone(value);
+                 }
+               }
+
+               return new LodashWrapper(value);
+             }
+             /**
+              * The base implementation of `_.create` without support for assigning
+              * properties to the created object.
+              *
+              * @private
+              * @param {Object} proto The object to inherit from.
+              * @returns {Object} Returns the new object.
+              */
+
+
+             var baseCreate = function () {
+               function object() {}
+
+               return function (proto) {
+                 if (!isObject(proto)) {
+                   return {};
+                 }
+
+                 if (objectCreate) {
+                   return objectCreate(proto);
+                 }
+
+                 object.prototype = proto;
+                 var result = new object();
+                 object.prototype = undefined$1;
+                 return result;
+               };
+             }();
+             /**
+              * The function whose prototype chain sequence wrappers inherit from.
+              *
+              * @private
+              */
+
+
+             function baseLodash() {// No operation performed.
+             }
+             /**
+              * The base constructor for creating `lodash` wrapper objects.
+              *
+              * @private
+              * @param {*} value The value to wrap.
+              * @param {boolean} [chainAll] Enable explicit method chain sequences.
+              */
+
+
+             function LodashWrapper(value, chainAll) {
+               this.__wrapped__ = value;
+               this.__actions__ = [];
+               this.__chain__ = !!chainAll;
+               this.__index__ = 0;
+               this.__values__ = undefined$1;
+             }
+             /**
+              * By default, the template delimiters used by lodash are like those in
+              * embedded Ruby (ERB) as well as ES2015 template strings. Change the
+              * following template settings to use alternative delimiters.
+              *
+              * @static
+              * @memberOf _
+              * @type {Object}
+              */
+
+
+             lodash.templateSettings = {
+               /**
+                * Used to detect `data` property values to be HTML-escaped.
+                *
+                * @memberOf _.templateSettings
+                * @type {RegExp}
+                */
+               'escape': reEscape,
+
+               /**
+                * Used to detect code to be evaluated.
+                *
+                * @memberOf _.templateSettings
+                * @type {RegExp}
+                */
+               'evaluate': reEvaluate,
+
+               /**
+                * Used to detect `data` property values to inject.
+                *
+                * @memberOf _.templateSettings
+                * @type {RegExp}
+                */
+               'interpolate': reInterpolate,
+
+               /**
+                * Used to reference the data object in the template text.
+                *
+                * @memberOf _.templateSettings
+                * @type {string}
+                */
+               'variable': '',
+
+               /**
+                * Used to import variables into the compiled template.
+                *
+                * @memberOf _.templateSettings
+                * @type {Object}
+                */
+               'imports': {
+                 /**
+                  * A reference to the `lodash` function.
+                  *
+                  * @memberOf _.templateSettings.imports
+                  * @type {Function}
+                  */
+                 '_': lodash
+               }
+             }; // Ensure wrappers are instances of `baseLodash`.
+
+             lodash.prototype = baseLodash.prototype;
+             lodash.prototype.constructor = lodash;
+             LodashWrapper.prototype = baseCreate(baseLodash.prototype);
+             LodashWrapper.prototype.constructor = LodashWrapper;
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
+              *
+              * @private
+              * @constructor
+              * @param {*} value The value to wrap.
+              */
+
+             function LazyWrapper(value) {
+               this.__wrapped__ = value;
+               this.__actions__ = [];
+               this.__dir__ = 1;
+               this.__filtered__ = false;
+               this.__iteratees__ = [];
+               this.__takeCount__ = MAX_ARRAY_LENGTH;
+               this.__views__ = [];
+             }
+             /**
+              * Creates a clone of the lazy wrapper object.
+              *
+              * @private
+              * @name clone
+              * @memberOf LazyWrapper
+              * @returns {Object} Returns the cloned `LazyWrapper` object.
+              */
+
+
+             function lazyClone() {
+               var result = new LazyWrapper(this.__wrapped__);
+               result.__actions__ = copyArray(this.__actions__);
+               result.__dir__ = this.__dir__;
+               result.__filtered__ = this.__filtered__;
+               result.__iteratees__ = copyArray(this.__iteratees__);
+               result.__takeCount__ = this.__takeCount__;
+               result.__views__ = copyArray(this.__views__);
+               return result;
+             }
+             /**
+              * Reverses the direction of lazy iteration.
+              *
+              * @private
+              * @name reverse
+              * @memberOf LazyWrapper
+              * @returns {Object} Returns the new reversed `LazyWrapper` object.
+              */
+
+
+             function lazyReverse() {
+               if (this.__filtered__) {
+                 var result = new LazyWrapper(this);
+                 result.__dir__ = -1;
+                 result.__filtered__ = true;
+               } else {
+                 result = this.clone();
+                 result.__dir__ *= -1;
+               }
+
+               return result;
+             }
+             /**
+              * Extracts the unwrapped value from its lazy wrapper.
+              *
+              * @private
+              * @name value
+              * @memberOf LazyWrapper
+              * @returns {*} Returns the unwrapped value.
+              */
+
+
+             function lazyValue() {
+               var array = this.__wrapped__.value(),
+                   dir = this.__dir__,
+                   isArr = isArray(array),
+                   isRight = dir < 0,
+                   arrLength = isArr ? array.length : 0,
+                   view = getView(0, arrLength, this.__views__),
+                   start = view.start,
+                   end = view.end,
+                   length = end - start,
+                   index = isRight ? end : start - 1,
+                   iteratees = this.__iteratees__,
+                   iterLength = iteratees.length,
+                   resIndex = 0,
+                   takeCount = nativeMin(length, this.__takeCount__);
+
+               if (!isArr || !isRight && arrLength == length && takeCount == length) {
+                 return baseWrapperValue(array, this.__actions__);
+               }
+
+               var result = [];
+
+               outer: while (length-- && resIndex < takeCount) {
+                 index += dir;
+                 var iterIndex = -1,
+                     value = array[index];
+
+                 while (++iterIndex < iterLength) {
+                   var data = iteratees[iterIndex],
+                       iteratee = data.iteratee,
+                       type = data.type,
+                       computed = iteratee(value);
+
+                   if (type == LAZY_MAP_FLAG) {
+                     value = computed;
+                   } else if (!computed) {
+                     if (type == LAZY_FILTER_FLAG) {
+                       continue outer;
+                     } else {
+                       break outer;
+                     }
+                   }
+                 }
+
+                 result[resIndex++] = value;
+               }
+
+               return result;
+             } // Ensure `LazyWrapper` is an instance of `baseLodash`.
+
+
+             LazyWrapper.prototype = baseCreate(baseLodash.prototype);
+             LazyWrapper.prototype.constructor = LazyWrapper;
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates a hash object.
+              *
+              * @private
+              * @constructor
+              * @param {Array} [entries] The key-value pairs to cache.
+              */
+
+             function Hash(entries) {
+               var index = -1,
+                   length = entries == null ? 0 : entries.length;
+               this.clear();
+
+               while (++index < length) {
+                 var entry = entries[index];
+                 this.set(entry[0], entry[1]);
+               }
+             }
+             /**
+              * Removes all key-value entries from the hash.
+              *
+              * @private
+              * @name clear
+              * @memberOf Hash
+              */
+
+
+             function hashClear() {
+               this.__data__ = nativeCreate ? nativeCreate(null) : {};
+               this.size = 0;
+             }
+             /**
+              * Removes `key` and its value from the hash.
+              *
+              * @private
+              * @name delete
+              * @memberOf Hash
+              * @param {Object} hash The hash to modify.
+              * @param {string} key The key of the value to remove.
+              * @returns {boolean} Returns `true` if the entry was removed, else `false`.
+              */
+
+
+             function hashDelete(key) {
+               var result = this.has(key) && delete this.__data__[key];
+               this.size -= result ? 1 : 0;
+               return result;
+             }
+             /**
+              * Gets the hash value for `key`.
+              *
+              * @private
+              * @name get
+              * @memberOf Hash
+              * @param {string} key The key of the value to get.
+              * @returns {*} Returns the entry value.
+              */
+
+
+             function hashGet(key) {
+               var data = this.__data__;
+
+               if (nativeCreate) {
+                 var result = data[key];
+                 return result === HASH_UNDEFINED ? undefined$1 : result;
+               }
+
+               return hasOwnProperty.call(data, key) ? data[key] : undefined$1;
+             }
+             /**
+              * Checks if a hash value for `key` exists.
+              *
+              * @private
+              * @name has
+              * @memberOf Hash
+              * @param {string} key The key of the entry to check.
+              * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
+              */
+
+
+             function hashHas(key) {
+               var data = this.__data__;
+               return nativeCreate ? data[key] !== undefined$1 : hasOwnProperty.call(data, key);
+             }
+             /**
+              * Sets the hash `key` to `value`.
+              *
+              * @private
+              * @name set
+              * @memberOf Hash
+              * @param {string} key The key of the value to set.
+              * @param {*} value The value to set.
+              * @returns {Object} Returns the hash instance.
+              */
+
+
+             function hashSet(key, value) {
+               var data = this.__data__;
+               this.size += this.has(key) ? 0 : 1;
+               data[key] = nativeCreate && value === undefined$1 ? HASH_UNDEFINED : value;
+               return this;
+             } // Add methods to `Hash`.
+
+
+             Hash.prototype.clear = hashClear;
+             Hash.prototype['delete'] = hashDelete;
+             Hash.prototype.get = hashGet;
+             Hash.prototype.has = hashHas;
+             Hash.prototype.set = hashSet;
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates an list cache object.
+              *
+              * @private
+              * @constructor
+              * @param {Array} [entries] The key-value pairs to cache.
+              */
+
+             function ListCache(entries) {
+               var index = -1,
+                   length = entries == null ? 0 : entries.length;
+               this.clear();
+
+               while (++index < length) {
+                 var entry = entries[index];
+                 this.set(entry[0], entry[1]);
+               }
+             }
+             /**
+              * Removes all key-value entries from the list cache.
+              *
+              * @private
+              * @name clear
+              * @memberOf ListCache
+              */
+
+
+             function listCacheClear() {
+               this.__data__ = [];
+               this.size = 0;
+             }
+             /**
+              * Removes `key` and its value from the list cache.
+              *
+              * @private
+              * @name delete
+              * @memberOf ListCache
+              * @param {string} key The key of the value to remove.
+              * @returns {boolean} Returns `true` if the entry was removed, else `false`.
+              */
+
+
+             function listCacheDelete(key) {
+               var data = this.__data__,
+                   index = assocIndexOf(data, key);
+
+               if (index < 0) {
+                 return false;
+               }
+
+               var lastIndex = data.length - 1;
+
+               if (index == lastIndex) {
+                 data.pop();
+               } else {
+                 splice.call(data, index, 1);
+               }
+
+               --this.size;
+               return true;
+             }
+             /**
+              * Gets the list cache value for `key`.
+              *
+              * @private
+              * @name get
+              * @memberOf ListCache
+              * @param {string} key The key of the value to get.
+              * @returns {*} Returns the entry value.
+              */
+
+
+             function listCacheGet(key) {
+               var data = this.__data__,
+                   index = assocIndexOf(data, key);
+               return index < 0 ? undefined$1 : data[index][1];
+             }
+             /**
+              * Checks if a list cache value for `key` exists.
+              *
+              * @private
+              * @name has
+              * @memberOf ListCache
+              * @param {string} key The key of the entry to check.
+              * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
+              */
+
+
+             function listCacheHas(key) {
+               return assocIndexOf(this.__data__, key) > -1;
+             }
+             /**
+              * Sets the list cache `key` to `value`.
+              *
+              * @private
+              * @name set
+              * @memberOf ListCache
+              * @param {string} key The key of the value to set.
+              * @param {*} value The value to set.
+              * @returns {Object} Returns the list cache instance.
+              */
+
+
+             function listCacheSet(key, value) {
+               var data = this.__data__,
+                   index = assocIndexOf(data, key);
+
+               if (index < 0) {
+                 ++this.size;
+                 data.push([key, value]);
+               } else {
+                 data[index][1] = value;
+               }
+
+               return this;
+             } // Add methods to `ListCache`.
+
+
+             ListCache.prototype.clear = listCacheClear;
+             ListCache.prototype['delete'] = listCacheDelete;
+             ListCache.prototype.get = listCacheGet;
+             ListCache.prototype.has = listCacheHas;
+             ListCache.prototype.set = listCacheSet;
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates a map cache object to store key-value pairs.
+              *
+              * @private
+              * @constructor
+              * @param {Array} [entries] The key-value pairs to cache.
+              */
+
+             function MapCache(entries) {
+               var index = -1,
+                   length = entries == null ? 0 : entries.length;
+               this.clear();
+
+               while (++index < length) {
+                 var entry = entries[index];
+                 this.set(entry[0], entry[1]);
+               }
+             }
+             /**
+              * Removes all key-value entries from the map.
+              *
+              * @private
+              * @name clear
+              * @memberOf MapCache
+              */
+
+
+             function mapCacheClear() {
+               this.size = 0;
+               this.__data__ = {
+                 'hash': new Hash(),
+                 'map': new (Map || ListCache)(),
+                 'string': new Hash()
+               };
+             }
+             /**
+              * Removes `key` and its value from the map.
+              *
+              * @private
+              * @name delete
+              * @memberOf MapCache
+              * @param {string} key The key of the value to remove.
+              * @returns {boolean} Returns `true` if the entry was removed, else `false`.
+              */
+
+
+             function mapCacheDelete(key) {
+               var result = getMapData(this, key)['delete'](key);
+               this.size -= result ? 1 : 0;
+               return result;
+             }
+             /**
+              * Gets the map value for `key`.
+              *
+              * @private
+              * @name get
+              * @memberOf MapCache
+              * @param {string} key The key of the value to get.
+              * @returns {*} Returns the entry value.
+              */
+
+
+             function mapCacheGet(key) {
+               return getMapData(this, key).get(key);
+             }
+             /**
+              * Checks if a map value for `key` exists.
+              *
+              * @private
+              * @name has
+              * @memberOf MapCache
+              * @param {string} key The key of the entry to check.
+              * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
+              */
+
+
+             function mapCacheHas(key) {
+               return getMapData(this, key).has(key);
+             }
+             /**
+              * Sets the map `key` to `value`.
+              *
+              * @private
+              * @name set
+              * @memberOf MapCache
+              * @param {string} key The key of the value to set.
+              * @param {*} value The value to set.
+              * @returns {Object} Returns the map cache instance.
+              */
+
+
+             function mapCacheSet(key, value) {
+               var data = getMapData(this, key),
+                   size = data.size;
+               data.set(key, value);
+               this.size += data.size == size ? 0 : 1;
+               return this;
+             } // Add methods to `MapCache`.
+
+
+             MapCache.prototype.clear = mapCacheClear;
+             MapCache.prototype['delete'] = mapCacheDelete;
+             MapCache.prototype.get = mapCacheGet;
+             MapCache.prototype.has = mapCacheHas;
+             MapCache.prototype.set = mapCacheSet;
+             /*------------------------------------------------------------------------*/
+
+             /**
+              *
+              * Creates an array cache object to store unique values.
+              *
+              * @private
+              * @constructor
+              * @param {Array} [values] The values to cache.
+              */
+
+             function SetCache(values) {
+               var index = -1,
+                   length = values == null ? 0 : values.length;
+               this.__data__ = new MapCache();
+
+               while (++index < length) {
+                 this.add(values[index]);
+               }
+             }
+             /**
+              * Adds `value` to the array cache.
+              *
+              * @private
+              * @name add
+              * @memberOf SetCache
+              * @alias push
+              * @param {*} value The value to cache.
+              * @returns {Object} Returns the cache instance.
+              */
+
+
+             function setCacheAdd(value) {
+               this.__data__.set(value, HASH_UNDEFINED);
+
+               return this;
+             }
+             /**
+              * Checks if `value` is in the array cache.
+              *
+              * @private
+              * @name has
+              * @memberOf SetCache
+              * @param {*} value The value to search for.
+              * @returns {number} Returns `true` if `value` is found, else `false`.
+              */
+
+
+             function setCacheHas(value) {
+               return this.__data__.has(value);
+             } // Add methods to `SetCache`.
+
+
+             SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
+             SetCache.prototype.has = setCacheHas;
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates a stack cache object to store key-value pairs.
+              *
+              * @private
+              * @constructor
+              * @param {Array} [entries] The key-value pairs to cache.
+              */
+
+             function Stack(entries) {
+               var data = this.__data__ = new ListCache(entries);
+               this.size = data.size;
+             }
+             /**
+              * Removes all key-value entries from the stack.
+              *
+              * @private
+              * @name clear
+              * @memberOf Stack
+              */
+
+
+             function stackClear() {
+               this.__data__ = new ListCache();
+               this.size = 0;
+             }
+             /**
+              * Removes `key` and its value from the stack.
+              *
+              * @private
+              * @name delete
+              * @memberOf Stack
+              * @param {string} key The key of the value to remove.
+              * @returns {boolean} Returns `true` if the entry was removed, else `false`.
+              */
+
+
+             function stackDelete(key) {
+               var data = this.__data__,
+                   result = data['delete'](key);
+               this.size = data.size;
+               return result;
+             }
+             /**
+              * Gets the stack value for `key`.
+              *
+              * @private
+              * @name get
+              * @memberOf Stack
+              * @param {string} key The key of the value to get.
+              * @returns {*} Returns the entry value.
+              */
+
+
+             function stackGet(key) {
+               return this.__data__.get(key);
+             }
+             /**
+              * Checks if a stack value for `key` exists.
+              *
+              * @private
+              * @name has
+              * @memberOf Stack
+              * @param {string} key The key of the entry to check.
+              * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
+              */
+
+
+             function stackHas(key) {
+               return this.__data__.has(key);
+             }
+             /**
+              * Sets the stack `key` to `value`.
+              *
+              * @private
+              * @name set
+              * @memberOf Stack
+              * @param {string} key The key of the value to set.
+              * @param {*} value The value to set.
+              * @returns {Object} Returns the stack cache instance.
+              */
+
+
+             function stackSet(key, value) {
+               var data = this.__data__;
+
+               if (data instanceof ListCache) {
+                 var pairs = data.__data__;
+
+                 if (!Map || pairs.length < LARGE_ARRAY_SIZE - 1) {
+                   pairs.push([key, value]);
+                   this.size = ++data.size;
+                   return this;
+                 }
+
+                 data = this.__data__ = new MapCache(pairs);
+               }
+
+               data.set(key, value);
+               this.size = data.size;
+               return this;
+             } // Add methods to `Stack`.
+
+
+             Stack.prototype.clear = stackClear;
+             Stack.prototype['delete'] = stackDelete;
+             Stack.prototype.get = stackGet;
+             Stack.prototype.has = stackHas;
+             Stack.prototype.set = stackSet;
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates an array of the enumerable property names of the array-like `value`.
+              *
+              * @private
+              * @param {*} value The value to query.
+              * @param {boolean} inherited Specify returning inherited property names.
+              * @returns {Array} Returns the array of property names.
+              */
+
+             function arrayLikeKeys(value, inherited) {
+               var isArr = isArray(value),
+                   isArg = !isArr && isArguments(value),
+                   isBuff = !isArr && !isArg && isBuffer(value),
+                   isType = !isArr && !isArg && !isBuff && isTypedArray(value),
+                   skipIndexes = isArr || isArg || isBuff || isType,
+                   result = skipIndexes ? baseTimes(value.length, String) : [],
+                   length = result.length;
+
+               for (var key in value) {
+                 if ((inherited || hasOwnProperty.call(value, key)) && !(skipIndexes && ( // Safari 9 has enumerable `arguments.length` in strict mode.
+                 key == 'length' || // Node.js 0.10 has enumerable non-index properties on buffers.
+                 isBuff && (key == 'offset' || key == 'parent') || // PhantomJS 2 has enumerable non-index properties on typed arrays.
+                 isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset') || // Skip index properties.
+                 isIndex(key, length)))) {
+                   result.push(key);
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * A specialized version of `_.sample` for arrays.
+              *
+              * @private
+              * @param {Array} array The array to sample.
+              * @returns {*} Returns the random element.
+              */
+
+
+             function arraySample(array) {
+               var length = array.length;
+               return length ? array[baseRandom(0, length - 1)] : undefined$1;
+             }
+             /**
+              * A specialized version of `_.sampleSize` for arrays.
+              *
+              * @private
+              * @param {Array} array The array to sample.
+              * @param {number} n The number of elements to sample.
+              * @returns {Array} Returns the random elements.
+              */
+
+
+             function arraySampleSize(array, n) {
+               return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
+             }
+             /**
+              * A specialized version of `_.shuffle` for arrays.
+              *
+              * @private
+              * @param {Array} array The array to shuffle.
+              * @returns {Array} Returns the new shuffled array.
+              */
+
+
+             function arrayShuffle(array) {
+               return shuffleSelf(copyArray(array));
+             }
+             /**
+              * This function is like `assignValue` except that it doesn't assign
+              * `undefined` values.
+              *
+              * @private
+              * @param {Object} object The object to modify.
+              * @param {string} key The key of the property to assign.
+              * @param {*} value The value to assign.
+              */
+
+
+             function assignMergeValue(object, key, value) {
+               if (value !== undefined$1 && !eq(object[key], value) || value === undefined$1 && !(key in object)) {
+                 baseAssignValue(object, key, value);
+               }
+             }
+             /**
+              * Assigns `value` to `key` of `object` if the existing value is not equivalent
+              * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * for equality comparisons.
+              *
+              * @private
+              * @param {Object} object The object to modify.
+              * @param {string} key The key of the property to assign.
+              * @param {*} value The value to assign.
+              */
+
+
+             function assignValue(object, key, value) {
+               var objValue = object[key];
+
+               if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) || value === undefined$1 && !(key in object)) {
+                 baseAssignValue(object, key, value);
+               }
+             }
+             /**
+              * Gets the index at which the `key` is found in `array` of key-value pairs.
+              *
+              * @private
+              * @param {Array} array The array to inspect.
+              * @param {*} key The key to search for.
+              * @returns {number} Returns the index of the matched value, else `-1`.
+              */
+
+
+             function assocIndexOf(array, key) {
+               var length = array.length;
+
+               while (length--) {
+                 if (eq(array[length][0], key)) {
+                   return length;
+                 }
+               }
+
+               return -1;
+             }
+             /**
+              * Aggregates elements of `collection` on `accumulator` with keys transformed
+              * by `iteratee` and values set by `setter`.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} setter The function to set `accumulator` values.
+              * @param {Function} iteratee The iteratee to transform keys.
+              * @param {Object} accumulator The initial aggregated object.
+              * @returns {Function} Returns `accumulator`.
+              */
+
+
+             function baseAggregator(collection, setter, iteratee, accumulator) {
+               baseEach(collection, function (value, key, collection) {
+                 setter(accumulator, value, iteratee(value), collection);
+               });
+               return accumulator;
+             }
+             /**
+              * The base implementation of `_.assign` without support for multiple sources
+              * or `customizer` functions.
+              *
+              * @private
+              * @param {Object} object The destination object.
+              * @param {Object} source The source object.
+              * @returns {Object} Returns `object`.
+              */
+
+
+             function baseAssign(object, source) {
+               return object && copyObject(source, keys(source), object);
+             }
+             /**
+              * The base implementation of `_.assignIn` without support for multiple sources
+              * or `customizer` functions.
+              *
+              * @private
+              * @param {Object} object The destination object.
+              * @param {Object} source The source object.
+              * @returns {Object} Returns `object`.
+              */
+
+
+             function baseAssignIn(object, source) {
+               return object && copyObject(source, keysIn(source), object);
+             }
+             /**
+              * The base implementation of `assignValue` and `assignMergeValue` without
+              * value checks.
+              *
+              * @private
+              * @param {Object} object The object to modify.
+              * @param {string} key The key of the property to assign.
+              * @param {*} value The value to assign.
+              */
+
+
+             function baseAssignValue(object, key, value) {
+               if (key == '__proto__' && defineProperty) {
+                 defineProperty(object, key, {
+                   'configurable': true,
+                   'enumerable': true,
+                   'value': value,
+                   'writable': true
+                 });
+               } else {
+                 object[key] = value;
+               }
+             }
+             /**
+              * The base implementation of `_.at` without support for individual paths.
+              *
+              * @private
+              * @param {Object} object The object to iterate over.
+              * @param {string[]} paths The property paths to pick.
+              * @returns {Array} Returns the picked elements.
+              */
+
+
+             function baseAt(object, paths) {
+               var index = -1,
+                   length = paths.length,
+                   result = Array(length),
+                   skip = object == null;
+
+               while (++index < length) {
+                 result[index] = skip ? undefined$1 : get(object, paths[index]);
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.clamp` which doesn't coerce arguments.
+              *
+              * @private
+              * @param {number} number The number to clamp.
+              * @param {number} [lower] The lower bound.
+              * @param {number} upper The upper bound.
+              * @returns {number} Returns the clamped number.
+              */
+
+
+             function baseClamp(number, lower, upper) {
+               if (number === number) {
+                 if (upper !== undefined$1) {
+                   number = number <= upper ? number : upper;
+                 }
+
+                 if (lower !== undefined$1) {
+                   number = number >= lower ? number : lower;
+                 }
+               }
+
+               return number;
+             }
+             /**
+              * The base implementation of `_.clone` and `_.cloneDeep` which tracks
+              * traversed objects.
+              *
+              * @private
+              * @param {*} value The value to clone.
+              * @param {boolean} bitmask The bitmask flags.
+              *  1 - Deep clone
+              *  2 - Flatten inherited properties
+              *  4 - Clone symbols
+              * @param {Function} [customizer] The function to customize cloning.
+              * @param {string} [key] The key of `value`.
+              * @param {Object} [object] The parent object of `value`.
+              * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
+              * @returns {*} Returns the cloned value.
+              */
+
+
+             function baseClone(value, bitmask, customizer, key, object, stack) {
+               var result,
+                   isDeep = bitmask & CLONE_DEEP_FLAG,
+                   isFlat = bitmask & CLONE_FLAT_FLAG,
+                   isFull = bitmask & CLONE_SYMBOLS_FLAG;
+
+               if (customizer) {
+                 result = object ? customizer(value, key, object, stack) : customizer(value);
+               }
+
+               if (result !== undefined$1) {
+                 return result;
+               }
+
+               if (!isObject(value)) {
+                 return value;
+               }
+
+               var isArr = isArray(value);
+
+               if (isArr) {
+                 result = initCloneArray(value);
+
+                 if (!isDeep) {
+                   return copyArray(value, result);
+                 }
+               } else {
+                 var tag = getTag(value),
+                     isFunc = tag == funcTag || tag == genTag;
+
+                 if (isBuffer(value)) {
+                   return cloneBuffer(value, isDeep);
+                 }
+
+                 if (tag == objectTag || tag == argsTag || isFunc && !object) {
+                   result = isFlat || isFunc ? {} : initCloneObject(value);
+
+                   if (!isDeep) {
+                     return isFlat ? copySymbolsIn(value, baseAssignIn(result, value)) : copySymbols(value, baseAssign(result, value));
+                   }
+                 } else {
+                   if (!cloneableTags[tag]) {
+                     return object ? value : {};
+                   }
+
+                   result = initCloneByTag(value, tag, isDeep);
+                 }
+               } // Check for circular references and return its corresponding clone.
+
+
+               stack || (stack = new Stack());
+               var stacked = stack.get(value);
+
+               if (stacked) {
+                 return stacked;
+               }
+
+               stack.set(value, result);
+
+               if (isSet(value)) {
+                 value.forEach(function (subValue) {
+                   result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));
+                 });
+               } else if (isMap(value)) {
+                 value.forEach(function (subValue, key) {
+                   result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));
+                 });
+               }
+
+               var keysFunc = isFull ? isFlat ? getAllKeysIn : getAllKeys : isFlat ? keysIn : keys;
+               var props = isArr ? undefined$1 : keysFunc(value);
+               arrayEach(props || value, function (subValue, key) {
+                 if (props) {
+                   key = subValue;
+                   subValue = value[key];
+                 } // Recursively populate clone (susceptible to call stack limits).
+
+
+                 assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
+               });
+               return result;
+             }
+             /**
+              * The base implementation of `_.conforms` which doesn't clone `source`.
+              *
+              * @private
+              * @param {Object} source The object of property predicates to conform to.
+              * @returns {Function} Returns the new spec function.
+              */
+
+
+             function baseConforms(source) {
+               var props = keys(source);
+               return function (object) {
+                 return baseConformsTo(object, source, props);
+               };
+             }
+             /**
+              * The base implementation of `_.conformsTo` which accepts `props` to check.
+              *
+              * @private
+              * @param {Object} object The object to inspect.
+              * @param {Object} source The object of property predicates to conform to.
+              * @returns {boolean} Returns `true` if `object` conforms, else `false`.
+              */
+
+
+             function baseConformsTo(object, source, props) {
+               var length = props.length;
+
+               if (object == null) {
+                 return !length;
+               }
+
+               object = Object(object);
+
+               while (length--) {
+                 var key = props[length],
+                     predicate = source[key],
+                     value = object[key];
+
+                 if (value === undefined$1 && !(key in object) || !predicate(value)) {
+                   return false;
+                 }
+               }
+
+               return true;
+             }
+             /**
+              * The base implementation of `_.delay` and `_.defer` which accepts `args`
+              * to provide to `func`.
+              *
+              * @private
+              * @param {Function} func The function to delay.
+              * @param {number} wait The number of milliseconds to delay invocation.
+              * @param {Array} args The arguments to provide to `func`.
+              * @returns {number|Object} Returns the timer id or timeout object.
+              */
+
+
+             function baseDelay(func, wait, args) {
+               if (typeof func != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               return setTimeout(function () {
+                 func.apply(undefined$1, args);
+               }, wait);
+             }
+             /**
+              * The base implementation of methods like `_.difference` without support
+              * for excluding multiple arrays or iteratee shorthands.
+              *
+              * @private
+              * @param {Array} array The array to inspect.
+              * @param {Array} values The values to exclude.
+              * @param {Function} [iteratee] The iteratee invoked per element.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns the new array of filtered values.
+              */
+
+
+             function baseDifference(array, values, iteratee, comparator) {
+               var index = -1,
+                   includes = arrayIncludes,
+                   isCommon = true,
+                   length = array.length,
+                   result = [],
+                   valuesLength = values.length;
+
+               if (!length) {
+                 return result;
+               }
+
+               if (iteratee) {
+                 values = arrayMap(values, baseUnary(iteratee));
+               }
+
+               if (comparator) {
+                 includes = arrayIncludesWith;
+                 isCommon = false;
+               } else if (values.length >= LARGE_ARRAY_SIZE) {
+                 includes = cacheHas;
+                 isCommon = false;
+                 values = new SetCache(values);
+               }
+
+               outer: while (++index < length) {
+                 var value = array[index],
+                     computed = iteratee == null ? value : iteratee(value);
+                 value = comparator || value !== 0 ? value : 0;
+
+                 if (isCommon && computed === computed) {
+                   var valuesIndex = valuesLength;
+
+                   while (valuesIndex--) {
+                     if (values[valuesIndex] === computed) {
+                       continue outer;
+                     }
+                   }
+
+                   result.push(value);
+                 } else if (!includes(values, computed, comparator)) {
+                   result.push(value);
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.forEach` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} iteratee The function invoked per iteration.
+              * @returns {Array|Object} Returns `collection`.
+              */
+
+
+             var baseEach = createBaseEach(baseForOwn);
+             /**
+              * The base implementation of `_.forEachRight` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} iteratee The function invoked per iteration.
+              * @returns {Array|Object} Returns `collection`.
+              */
+
+             var baseEachRight = createBaseEach(baseForOwnRight, true);
+             /**
+              * The base implementation of `_.every` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} predicate The function invoked per iteration.
+              * @returns {boolean} Returns `true` if all elements pass the predicate check,
+              *  else `false`
+              */
+
+             function baseEvery(collection, predicate) {
+               var result = true;
+               baseEach(collection, function (value, index, collection) {
+                 result = !!predicate(value, index, collection);
+                 return result;
+               });
+               return result;
+             }
+             /**
+              * The base implementation of methods like `_.max` and `_.min` which accepts a
+              * `comparator` to determine the extremum value.
+              *
+              * @private
+              * @param {Array} array The array to iterate over.
+              * @param {Function} iteratee The iteratee invoked per iteration.
+              * @param {Function} comparator The comparator used to compare values.
+              * @returns {*} Returns the extremum value.
+              */
+
+
+             function baseExtremum(array, iteratee, comparator) {
+               var index = -1,
+                   length = array.length;
+
+               while (++index < length) {
+                 var value = array[index],
+                     current = iteratee(value);
+
+                 if (current != null && (computed === undefined$1 ? current === current && !isSymbol(current) : comparator(current, computed))) {
+                   var computed = current,
+                       result = value;
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.fill` without an iteratee call guard.
+              *
+              * @private
+              * @param {Array} array The array to fill.
+              * @param {*} value The value to fill `array` with.
+              * @param {number} [start=0] The start position.
+              * @param {number} [end=array.length] The end position.
+              * @returns {Array} Returns `array`.
+              */
+
+
+             function baseFill(array, value, start, end) {
+               var length = array.length;
+               start = toInteger(start);
+
+               if (start < 0) {
+                 start = -start > length ? 0 : length + start;
+               }
+
+               end = end === undefined$1 || end > length ? length : toInteger(end);
+
+               if (end < 0) {
+                 end += length;
+               }
+
+               end = start > end ? 0 : toLength(end);
+
+               while (start < end) {
+                 array[start++] = value;
+               }
+
+               return array;
+             }
+             /**
+              * The base implementation of `_.filter` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} predicate The function invoked per iteration.
+              * @returns {Array} Returns the new filtered array.
+              */
+
+
+             function baseFilter(collection, predicate) {
+               var result = [];
+               baseEach(collection, function (value, index, collection) {
+                 if (predicate(value, index, collection)) {
+                   result.push(value);
+                 }
+               });
+               return result;
+             }
+             /**
+              * The base implementation of `_.flatten` with support for restricting flattening.
+              *
+              * @private
+              * @param {Array} array The array to flatten.
+              * @param {number} depth The maximum recursion depth.
+              * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
+              * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
+              * @param {Array} [result=[]] The initial result value.
+              * @returns {Array} Returns the new flattened array.
+              */
+
+
+             function baseFlatten(array, depth, predicate, isStrict, result) {
+               var index = -1,
+                   length = array.length;
+               predicate || (predicate = isFlattenable);
+               result || (result = []);
+
+               while (++index < length) {
+                 var value = array[index];
+
+                 if (depth > 0 && predicate(value)) {
+                   if (depth > 1) {
+                     // Recursively flatten arrays (susceptible to call stack limits).
+                     baseFlatten(value, depth - 1, predicate, isStrict, result);
+                   } else {
+                     arrayPush(result, value);
+                   }
+                 } else if (!isStrict) {
+                   result[result.length] = value;
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `baseForOwn` which iterates over `object`
+              * properties returned by `keysFunc` and invokes `iteratee` for each property.
+              * Iteratee functions may exit iteration early by explicitly returning `false`.
+              *
+              * @private
+              * @param {Object} object The object to iterate over.
+              * @param {Function} iteratee The function invoked per iteration.
+              * @param {Function} keysFunc The function to get the keys of `object`.
+              * @returns {Object} Returns `object`.
+              */
+
+
+             var baseFor = createBaseFor();
+             /**
+              * This function is like `baseFor` except that it iterates over properties
+              * in the opposite order.
+              *
+              * @private
+              * @param {Object} object The object to iterate over.
+              * @param {Function} iteratee The function invoked per iteration.
+              * @param {Function} keysFunc The function to get the keys of `object`.
+              * @returns {Object} Returns `object`.
+              */
+
+             var baseForRight = createBaseFor(true);
+             /**
+              * The base implementation of `_.forOwn` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Object} object The object to iterate over.
+              * @param {Function} iteratee The function invoked per iteration.
+              * @returns {Object} Returns `object`.
+              */
+
+             function baseForOwn(object, iteratee) {
+               return object && baseFor(object, iteratee, keys);
+             }
+             /**
+              * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Object} object The object to iterate over.
+              * @param {Function} iteratee The function invoked per iteration.
+              * @returns {Object} Returns `object`.
+              */
+
+
+             function baseForOwnRight(object, iteratee) {
+               return object && baseForRight(object, iteratee, keys);
+             }
+             /**
+              * The base implementation of `_.functions` which creates an array of
+              * `object` function property names filtered from `props`.
+              *
+              * @private
+              * @param {Object} object The object to inspect.
+              * @param {Array} props The property names to filter.
+              * @returns {Array} Returns the function names.
+              */
+
+
+             function baseFunctions(object, props) {
+               return arrayFilter(props, function (key) {
+                 return isFunction(object[key]);
+               });
+             }
+             /**
+              * The base implementation of `_.get` without support for default values.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @param {Array|string} path The path of the property to get.
+              * @returns {*} Returns the resolved value.
+              */
+
+
+             function baseGet(object, path) {
+               path = castPath(path, object);
+               var index = 0,
+                   length = path.length;
+
+               while (object != null && index < length) {
+                 object = object[toKey(path[index++])];
+               }
+
+               return index && index == length ? object : undefined$1;
+             }
+             /**
+              * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
+              * `keysFunc` and `symbolsFunc` to get the enumerable property names and
+              * symbols of `object`.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @param {Function} keysFunc The function to get the keys of `object`.
+              * @param {Function} symbolsFunc The function to get the symbols of `object`.
+              * @returns {Array} Returns the array of property names and symbols.
+              */
+
+
+             function baseGetAllKeys(object, keysFunc, symbolsFunc) {
+               var result = keysFunc(object);
+               return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
+             }
+             /**
+              * The base implementation of `getTag` without fallbacks for buggy environments.
+              *
+              * @private
+              * @param {*} value The value to query.
+              * @returns {string} Returns the `toStringTag`.
+              */
+
+
+             function baseGetTag(value) {
+               if (value == null) {
+                 return value === undefined$1 ? undefinedTag : nullTag;
+               }
+
+               return symToStringTag && symToStringTag in Object(value) ? getRawTag(value) : objectToString(value);
+             }
+             /**
+              * The base implementation of `_.gt` which doesn't coerce arguments.
+              *
+              * @private
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @returns {boolean} Returns `true` if `value` is greater than `other`,
+              *  else `false`.
+              */
+
+
+             function baseGt(value, other) {
+               return value > other;
+             }
+             /**
+              * The base implementation of `_.has` without support for deep paths.
+              *
+              * @private
+              * @param {Object} [object] The object to query.
+              * @param {Array|string} key The key to check.
+              * @returns {boolean} Returns `true` if `key` exists, else `false`.
+              */
+
+
+             function baseHas(object, key) {
+               return object != null && hasOwnProperty.call(object, key);
+             }
+             /**
+              * The base implementation of `_.hasIn` without support for deep paths.
+              *
+              * @private
+              * @param {Object} [object] The object to query.
+              * @param {Array|string} key The key to check.
+              * @returns {boolean} Returns `true` if `key` exists, else `false`.
+              */
+
+
+             function baseHasIn(object, key) {
+               return object != null && key in Object(object);
+             }
+             /**
+              * The base implementation of `_.inRange` which doesn't coerce arguments.
+              *
+              * @private
+              * @param {number} number The number to check.
+              * @param {number} start The start of the range.
+              * @param {number} end The end of the range.
+              * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
+              */
+
+
+             function baseInRange(number, start, end) {
+               return number >= nativeMin(start, end) && number < nativeMax(start, end);
+             }
+             /**
+              * The base implementation of methods like `_.intersection`, without support
+              * for iteratee shorthands, that accepts an array of arrays to inspect.
+              *
+              * @private
+              * @param {Array} arrays The arrays to inspect.
+              * @param {Function} [iteratee] The iteratee invoked per element.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns the new array of shared values.
+              */
+
+
+             function baseIntersection(arrays, iteratee, comparator) {
+               var includes = comparator ? arrayIncludesWith : arrayIncludes,
+                   length = arrays[0].length,
+                   othLength = arrays.length,
+                   othIndex = othLength,
+                   caches = Array(othLength),
+                   maxLength = Infinity,
+                   result = [];
+
+               while (othIndex--) {
+                 var array = arrays[othIndex];
+
+                 if (othIndex && iteratee) {
+                   array = arrayMap(array, baseUnary(iteratee));
+                 }
+
+                 maxLength = nativeMin(array.length, maxLength);
+                 caches[othIndex] = !comparator && (iteratee || length >= 120 && array.length >= 120) ? new SetCache(othIndex && array) : undefined$1;
+               }
+
+               array = arrays[0];
+               var index = -1,
+                   seen = caches[0];
+
+               outer: while (++index < length && result.length < maxLength) {
+                 var value = array[index],
+                     computed = iteratee ? iteratee(value) : value;
+                 value = comparator || value !== 0 ? value : 0;
+
+                 if (!(seen ? cacheHas(seen, computed) : includes(result, computed, comparator))) {
+                   othIndex = othLength;
+
+                   while (--othIndex) {
+                     var cache = caches[othIndex];
+
+                     if (!(cache ? cacheHas(cache, computed) : includes(arrays[othIndex], computed, comparator))) {
+                       continue outer;
+                     }
+                   }
+
+                   if (seen) {
+                     seen.push(computed);
+                   }
+
+                   result.push(value);
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.invert` and `_.invertBy` which inverts
+              * `object` with values transformed by `iteratee` and set by `setter`.
+              *
+              * @private
+              * @param {Object} object The object to iterate over.
+              * @param {Function} setter The function to set `accumulator` values.
+              * @param {Function} iteratee The iteratee to transform values.
+              * @param {Object} accumulator The initial inverted object.
+              * @returns {Function} Returns `accumulator`.
+              */
+
+
+             function baseInverter(object, setter, iteratee, accumulator) {
+               baseForOwn(object, function (value, key, object) {
+                 setter(accumulator, iteratee(value), key, object);
+               });
+               return accumulator;
+             }
+             /**
+              * The base implementation of `_.invoke` without support for individual
+              * method arguments.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @param {Array|string} path The path of the method to invoke.
+              * @param {Array} args The arguments to invoke the method with.
+              * @returns {*} Returns the result of the invoked method.
+              */
+
+
+             function baseInvoke(object, path, args) {
+               path = castPath(path, object);
+               object = parent(object, path);
+               var func = object == null ? object : object[toKey(last(path))];
+               return func == null ? undefined$1 : apply(func, object, args);
+             }
+             /**
+              * The base implementation of `_.isArguments`.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is an `arguments` object,
+              */
+
+
+             function baseIsArguments(value) {
+               return isObjectLike(value) && baseGetTag(value) == argsTag;
+             }
+             /**
+              * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
+              */
+
+
+             function baseIsArrayBuffer(value) {
+               return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;
+             }
+             /**
+              * The base implementation of `_.isDate` without Node.js optimizations.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
+              */
+
+
+             function baseIsDate(value) {
+               return isObjectLike(value) && baseGetTag(value) == dateTag;
+             }
+             /**
+              * The base implementation of `_.isEqual` which supports partial comparisons
+              * and tracks traversed objects.
+              *
+              * @private
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @param {boolean} bitmask The bitmask flags.
+              *  1 - Unordered comparison
+              *  2 - Partial comparison
+              * @param {Function} [customizer] The function to customize comparisons.
+              * @param {Object} [stack] Tracks traversed `value` and `other` objects.
+              * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+              */
+
+
+             function baseIsEqual(value, other, bitmask, customizer, stack) {
+               if (value === other) {
+                 return true;
+               }
+
+               if (value == null || other == null || !isObjectLike(value) && !isObjectLike(other)) {
+                 return value !== value && other !== other;
+               }
+
+               return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
+             }
+             /**
+              * A specialized version of `baseIsEqual` for arrays and objects which performs
+              * deep comparisons and tracks traversed objects enabling objects with circular
+              * references to be compared.
+              *
+              * @private
+              * @param {Object} object The object to compare.
+              * @param {Object} other The other object to compare.
+              * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+              * @param {Function} customizer The function to customize comparisons.
+              * @param {Function} equalFunc The function to determine equivalents of values.
+              * @param {Object} [stack] Tracks traversed `object` and `other` objects.
+              * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
+              */
+
+
+             function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
+               var objIsArr = isArray(object),
+                   othIsArr = isArray(other),
+                   objTag = objIsArr ? arrayTag : getTag(object),
+                   othTag = othIsArr ? arrayTag : getTag(other);
+               objTag = objTag == argsTag ? objectTag : objTag;
+               othTag = othTag == argsTag ? objectTag : othTag;
+               var objIsObj = objTag == objectTag,
+                   othIsObj = othTag == objectTag,
+                   isSameTag = objTag == othTag;
+
+               if (isSameTag && isBuffer(object)) {
+                 if (!isBuffer(other)) {
+                   return false;
+                 }
+
+                 objIsArr = true;
+                 objIsObj = false;
+               }
+
+               if (isSameTag && !objIsObj) {
+                 stack || (stack = new Stack());
+                 return objIsArr || isTypedArray(object) ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
+               }
+
+               if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
+                 var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
+                     othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
+
+                 if (objIsWrapped || othIsWrapped) {
+                   var objUnwrapped = objIsWrapped ? object.value() : object,
+                       othUnwrapped = othIsWrapped ? other.value() : other;
+                   stack || (stack = new Stack());
+                   return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
+                 }
+               }
+
+               if (!isSameTag) {
+                 return false;
+               }
+
+               stack || (stack = new Stack());
+               return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
+             }
+             /**
+              * The base implementation of `_.isMap` without Node.js optimizations.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a map, else `false`.
+              */
+
+
+             function baseIsMap(value) {
+               return isObjectLike(value) && getTag(value) == mapTag;
+             }
+             /**
+              * The base implementation of `_.isMatch` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Object} object The object to inspect.
+              * @param {Object} source The object of property values to match.
+              * @param {Array} matchData The property names, values, and compare flags to match.
+              * @param {Function} [customizer] The function to customize comparisons.
+              * @returns {boolean} Returns `true` if `object` is a match, else `false`.
+              */
+
+
+             function baseIsMatch(object, source, matchData, customizer) {
+               var index = matchData.length,
+                   length = index,
+                   noCustomizer = !customizer;
+
+               if (object == null) {
+                 return !length;
+               }
+
+               object = Object(object);
+
+               while (index--) {
+                 var data = matchData[index];
+
+                 if (noCustomizer && data[2] ? data[1] !== object[data[0]] : !(data[0] in object)) {
+                   return false;
+                 }
+               }
+
+               while (++index < length) {
+                 data = matchData[index];
+                 var key = data[0],
+                     objValue = object[key],
+                     srcValue = data[1];
+
+                 if (noCustomizer && data[2]) {
+                   if (objValue === undefined$1 && !(key in object)) {
+                     return false;
+                   }
+                 } else {
+                   var stack = new Stack();
+
+                   if (customizer) {
+                     var result = customizer(objValue, srcValue, key, object, source, stack);
+                   }
+
+                   if (!(result === undefined$1 ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack) : result)) {
+                     return false;
+                   }
+                 }
+               }
+
+               return true;
+             }
+             /**
+              * The base implementation of `_.isNative` without bad shim checks.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a native function,
+              *  else `false`.
+              */
+
+
+             function baseIsNative(value) {
+               if (!isObject(value) || isMasked(value)) {
+                 return false;
+               }
+
+               var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
+               return pattern.test(toSource(value));
+             }
+             /**
+              * The base implementation of `_.isRegExp` without Node.js optimizations.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
+              */
+
+
+             function baseIsRegExp(value) {
+               return isObjectLike(value) && baseGetTag(value) == regexpTag;
+             }
+             /**
+              * The base implementation of `_.isSet` without Node.js optimizations.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a set, else `false`.
+              */
+
+
+             function baseIsSet(value) {
+               return isObjectLike(value) && getTag(value) == setTag;
+             }
+             /**
+              * The base implementation of `_.isTypedArray` without Node.js optimizations.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
+              */
+
+
+             function baseIsTypedArray(value) {
+               return isObjectLike(value) && isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
+             }
+             /**
+              * The base implementation of `_.iteratee`.
+              *
+              * @private
+              * @param {*} [value=_.identity] The value to convert to an iteratee.
+              * @returns {Function} Returns the iteratee.
+              */
+
+
+             function baseIteratee(value) {
+               // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
+               // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
+               if (typeof value == 'function') {
+                 return value;
+               }
+
+               if (value == null) {
+                 return identity;
+               }
+
+               if (_typeof(value) == 'object') {
+                 return isArray(value) ? baseMatchesProperty(value[0], value[1]) : baseMatches(value);
+               }
+
+               return property(value);
+             }
+             /**
+              * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of property names.
+              */
+
+
+             function baseKeys(object) {
+               if (!isPrototype(object)) {
+                 return nativeKeys(object);
+               }
+
+               var result = [];
+
+               for (var key in Object(object)) {
+                 if (hasOwnProperty.call(object, key) && key != 'constructor') {
+                   result.push(key);
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of property names.
+              */
+
+
+             function baseKeysIn(object) {
+               if (!isObject(object)) {
+                 return nativeKeysIn(object);
+               }
+
+               var isProto = isPrototype(object),
+                   result = [];
+
+               for (var key in object) {
+                 if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
+                   result.push(key);
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.lt` which doesn't coerce arguments.
+              *
+              * @private
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @returns {boolean} Returns `true` if `value` is less than `other`,
+              *  else `false`.
+              */
+
+
+             function baseLt(value, other) {
+               return value < other;
+             }
+             /**
+              * The base implementation of `_.map` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} iteratee The function invoked per iteration.
+              * @returns {Array} Returns the new mapped array.
+              */
+
+
+             function baseMap(collection, iteratee) {
+               var index = -1,
+                   result = isArrayLike(collection) ? Array(collection.length) : [];
+               baseEach(collection, function (value, key, collection) {
+                 result[++index] = iteratee(value, key, collection);
+               });
+               return result;
+             }
+             /**
+              * The base implementation of `_.matches` which doesn't clone `source`.
+              *
+              * @private
+              * @param {Object} source The object of property values to match.
+              * @returns {Function} Returns the new spec function.
+              */
+
+
+             function baseMatches(source) {
+               var matchData = getMatchData(source);
+
+               if (matchData.length == 1 && matchData[0][2]) {
+                 return matchesStrictComparable(matchData[0][0], matchData[0][1]);
+               }
+
+               return function (object) {
+                 return object === source || baseIsMatch(object, source, matchData);
+               };
+             }
+             /**
+              * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
+              *
+              * @private
+              * @param {string} path The path of the property to get.
+              * @param {*} srcValue The value to match.
+              * @returns {Function} Returns the new spec function.
+              */
+
+
+             function baseMatchesProperty(path, srcValue) {
+               if (isKey(path) && isStrictComparable(srcValue)) {
+                 return matchesStrictComparable(toKey(path), srcValue);
+               }
+
+               return function (object) {
+                 var objValue = get(object, path);
+                 return objValue === undefined$1 && objValue === srcValue ? hasIn(object, path) : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);
+               };
+             }
+             /**
+              * The base implementation of `_.merge` without support for multiple sources.
+              *
+              * @private
+              * @param {Object} object The destination object.
+              * @param {Object} source The source object.
+              * @param {number} srcIndex The index of `source`.
+              * @param {Function} [customizer] The function to customize merged values.
+              * @param {Object} [stack] Tracks traversed source values and their merged
+              *  counterparts.
+              */
+
+
+             function baseMerge(object, source, srcIndex, customizer, stack) {
+               if (object === source) {
+                 return;
+               }
+
+               baseFor(source, function (srcValue, key) {
+                 stack || (stack = new Stack());
+
+                 if (isObject(srcValue)) {
+                   baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
+                 } else {
+                   var newValue = customizer ? customizer(safeGet(object, key), srcValue, key + '', object, source, stack) : undefined$1;
+
+                   if (newValue === undefined$1) {
+                     newValue = srcValue;
+                   }
+
+                   assignMergeValue(object, key, newValue);
+                 }
+               }, keysIn);
+             }
+             /**
+              * A specialized version of `baseMerge` for arrays and objects which performs
+              * deep merges and tracks traversed objects enabling objects with circular
+              * references to be merged.
+              *
+              * @private
+              * @param {Object} object The destination object.
+              * @param {Object} source The source object.
+              * @param {string} key The key of the value to merge.
+              * @param {number} srcIndex The index of `source`.
+              * @param {Function} mergeFunc The function to merge values.
+              * @param {Function} [customizer] The function to customize assigned values.
+              * @param {Object} [stack] Tracks traversed source values and their merged
+              *  counterparts.
+              */
+
+
+             function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
+               var objValue = safeGet(object, key),
+                   srcValue = safeGet(source, key),
+                   stacked = stack.get(srcValue);
+
+               if (stacked) {
+                 assignMergeValue(object, key, stacked);
+                 return;
+               }
+
+               var newValue = customizer ? customizer(objValue, srcValue, key + '', object, source, stack) : undefined$1;
+               var isCommon = newValue === undefined$1;
+
+               if (isCommon) {
+                 var isArr = isArray(srcValue),
+                     isBuff = !isArr && isBuffer(srcValue),
+                     isTyped = !isArr && !isBuff && isTypedArray(srcValue);
+                 newValue = srcValue;
+
+                 if (isArr || isBuff || isTyped) {
+                   if (isArray(objValue)) {
+                     newValue = objValue;
+                   } else if (isArrayLikeObject(objValue)) {
+                     newValue = copyArray(objValue);
+                   } else if (isBuff) {
+                     isCommon = false;
+                     newValue = cloneBuffer(srcValue, true);
+                   } else if (isTyped) {
+                     isCommon = false;
+                     newValue = cloneTypedArray(srcValue, true);
+                   } else {
+                     newValue = [];
+                   }
+                 } else if (isPlainObject(srcValue) || isArguments(srcValue)) {
+                   newValue = objValue;
+
+                   if (isArguments(objValue)) {
+                     newValue = toPlainObject(objValue);
+                   } else if (!isObject(objValue) || isFunction(objValue)) {
+                     newValue = initCloneObject(srcValue);
+                   }
+                 } else {
+                   isCommon = false;
+                 }
+               }
+
+               if (isCommon) {
+                 // Recursively merge objects and arrays (susceptible to call stack limits).
+                 stack.set(srcValue, newValue);
+                 mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
+                 stack['delete'](srcValue);
+               }
+
+               assignMergeValue(object, key, newValue);
+             }
+             /**
+              * The base implementation of `_.nth` which doesn't coerce arguments.
+              *
+              * @private
+              * @param {Array} array The array to query.
+              * @param {number} n The index of the element to return.
+              * @returns {*} Returns the nth element of `array`.
+              */
+
+
+             function baseNth(array, n) {
+               var length = array.length;
+
+               if (!length) {
+                 return;
+               }
+
+               n += n < 0 ? length : 0;
+               return isIndex(n, length) ? array[n] : undefined$1;
+             }
+             /**
+              * The base implementation of `_.orderBy` without param guards.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
+              * @param {string[]} orders The sort orders of `iteratees`.
+              * @returns {Array} Returns the new sorted array.
+              */
+
+
+             function baseOrderBy(collection, iteratees, orders) {
+               if (iteratees.length) {
+                 iteratees = arrayMap(iteratees, function (iteratee) {
+                   if (isArray(iteratee)) {
+                     return function (value) {
+                       return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);
+                     };
+                   }
+
+                   return iteratee;
+                 });
+               } else {
+                 iteratees = [identity];
+               }
+
+               var index = -1;
+               iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
+               var result = baseMap(collection, function (value, key, collection) {
+                 var criteria = arrayMap(iteratees, function (iteratee) {
+                   return iteratee(value);
+                 });
+                 return {
+                   'criteria': criteria,
+                   'index': ++index,
+                   'value': value
+                 };
+               });
+               return baseSortBy(result, function (object, other) {
+                 return compareMultiple(object, other, orders);
+               });
+             }
+             /**
+              * The base implementation of `_.pick` without support for individual
+              * property identifiers.
+              *
+              * @private
+              * @param {Object} object The source object.
+              * @param {string[]} paths The property paths to pick.
+              * @returns {Object} Returns the new object.
+              */
+
+
+             function basePick(object, paths) {
+               return basePickBy(object, paths, function (value, path) {
+                 return hasIn(object, path);
+               });
+             }
+             /**
+              * The base implementation of  `_.pickBy` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Object} object The source object.
+              * @param {string[]} paths The property paths to pick.
+              * @param {Function} predicate The function invoked per property.
+              * @returns {Object} Returns the new object.
+              */
+
+
+             function basePickBy(object, paths, predicate) {
+               var index = -1,
+                   length = paths.length,
+                   result = {};
+
+               while (++index < length) {
+                 var path = paths[index],
+                     value = baseGet(object, path);
+
+                 if (predicate(value, path)) {
+                   baseSet(result, castPath(path, object), value);
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * A specialized version of `baseProperty` which supports deep paths.
+              *
+              * @private
+              * @param {Array|string} path The path of the property to get.
+              * @returns {Function} Returns the new accessor function.
+              */
+
+
+             function basePropertyDeep(path) {
+               return function (object) {
+                 return baseGet(object, path);
+               };
+             }
+             /**
+              * The base implementation of `_.pullAllBy` without support for iteratee
+              * shorthands.
+              *
+              * @private
+              * @param {Array} array The array to modify.
+              * @param {Array} values The values to remove.
+              * @param {Function} [iteratee] The iteratee invoked per element.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns `array`.
+              */
+
+
+             function basePullAll(array, values, iteratee, comparator) {
+               var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
+                   index = -1,
+                   length = values.length,
+                   seen = array;
+
+               if (array === values) {
+                 values = copyArray(values);
+               }
+
+               if (iteratee) {
+                 seen = arrayMap(array, baseUnary(iteratee));
+               }
+
+               while (++index < length) {
+                 var fromIndex = 0,
+                     value = values[index],
+                     computed = iteratee ? iteratee(value) : value;
+
+                 while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
+                   if (seen !== array) {
+                     splice.call(seen, fromIndex, 1);
+                   }
+
+                   splice.call(array, fromIndex, 1);
+                 }
+               }
+
+               return array;
+             }
+             /**
+              * The base implementation of `_.pullAt` without support for individual
+              * indexes or capturing the removed elements.
+              *
+              * @private
+              * @param {Array} array The array to modify.
+              * @param {number[]} indexes The indexes of elements to remove.
+              * @returns {Array} Returns `array`.
+              */
+
+
+             function basePullAt(array, indexes) {
+               var length = array ? indexes.length : 0,
+                   lastIndex = length - 1;
+
+               while (length--) {
+                 var index = indexes[length];
+
+                 if (length == lastIndex || index !== previous) {
+                   var previous = index;
+
+                   if (isIndex(index)) {
+                     splice.call(array, index, 1);
+                   } else {
+                     baseUnset(array, index);
+                   }
+                 }
+               }
+
+               return array;
+             }
+             /**
+              * The base implementation of `_.random` without support for returning
+              * floating-point numbers.
+              *
+              * @private
+              * @param {number} lower The lower bound.
+              * @param {number} upper The upper bound.
+              * @returns {number} Returns the random number.
+              */
+
+
+             function baseRandom(lower, upper) {
+               return lower + nativeFloor(nativeRandom() * (upper - lower + 1));
+             }
+             /**
+              * The base implementation of `_.range` and `_.rangeRight` which doesn't
+              * coerce arguments.
+              *
+              * @private
+              * @param {number} start The start of the range.
+              * @param {number} end The end of the range.
+              * @param {number} step The value to increment or decrement by.
+              * @param {boolean} [fromRight] Specify iterating from right to left.
+              * @returns {Array} Returns the range of numbers.
+              */
+
+
+             function baseRange(start, end, step, fromRight) {
+               var index = -1,
+                   length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),
+                   result = Array(length);
+
+               while (length--) {
+                 result[fromRight ? length : ++index] = start;
+                 start += step;
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.repeat` which doesn't coerce arguments.
+              *
+              * @private
+              * @param {string} string The string to repeat.
+              * @param {number} n The number of times to repeat the string.
+              * @returns {string} Returns the repeated string.
+              */
+
+
+             function baseRepeat(string, n) {
+               var result = '';
+
+               if (!string || n < 1 || n > MAX_SAFE_INTEGER) {
+                 return result;
+               } // Leverage the exponentiation by squaring algorithm for a faster repeat.
+               // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
+
+
+               do {
+                 if (n % 2) {
+                   result += string;
+                 }
+
+                 n = nativeFloor(n / 2);
+
+                 if (n) {
+                   string += string;
+                 }
+               } while (n);
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.rest` which doesn't validate or coerce arguments.
+              *
+              * @private
+              * @param {Function} func The function to apply a rest parameter to.
+              * @param {number} [start=func.length-1] The start position of the rest parameter.
+              * @returns {Function} Returns the new function.
+              */
+
+
+             function baseRest(func, start) {
+               return setToString(overRest(func, start, identity), func + '');
+             }
+             /**
+              * The base implementation of `_.sample`.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to sample.
+              * @returns {*} Returns the random element.
+              */
+
+
+             function baseSample(collection) {
+               return arraySample(values(collection));
+             }
+             /**
+              * The base implementation of `_.sampleSize` without param guards.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to sample.
+              * @param {number} n The number of elements to sample.
+              * @returns {Array} Returns the random elements.
+              */
+
+
+             function baseSampleSize(collection, n) {
+               var array = values(collection);
+               return shuffleSelf(array, baseClamp(n, 0, array.length));
+             }
+             /**
+              * The base implementation of `_.set`.
+              *
+              * @private
+              * @param {Object} object The object to modify.
+              * @param {Array|string} path The path of the property to set.
+              * @param {*} value The value to set.
+              * @param {Function} [customizer] The function to customize path creation.
+              * @returns {Object} Returns `object`.
+              */
+
+
+             function baseSet(object, path, value, customizer) {
+               if (!isObject(object)) {
+                 return object;
+               }
+
+               path = castPath(path, object);
+               var index = -1,
+                   length = path.length,
+                   lastIndex = length - 1,
+                   nested = object;
+
+               while (nested != null && ++index < length) {
+                 var key = toKey(path[index]),
+                     newValue = value;
+
+                 if (key === '__proto__' || key === 'constructor' || key === 'prototype') {
+                   return object;
+                 }
+
+                 if (index != lastIndex) {
+                   var objValue = nested[key];
+                   newValue = customizer ? customizer(objValue, key, nested) : undefined$1;
+
+                   if (newValue === undefined$1) {
+                     newValue = isObject(objValue) ? objValue : isIndex(path[index + 1]) ? [] : {};
+                   }
+                 }
+
+                 assignValue(nested, key, newValue);
+                 nested = nested[key];
+               }
+
+               return object;
+             }
+             /**
+              * The base implementation of `setData` without support for hot loop shorting.
+              *
+              * @private
+              * @param {Function} func The function to associate metadata with.
+              * @param {*} data The metadata.
+              * @returns {Function} Returns `func`.
+              */
+
+
+             var baseSetData = !metaMap ? identity : function (func, data) {
+               metaMap.set(func, data);
+               return func;
+             };
+             /**
+              * The base implementation of `setToString` without support for hot loop shorting.
+              *
+              * @private
+              * @param {Function} func The function to modify.
+              * @param {Function} string The `toString` result.
+              * @returns {Function} Returns `func`.
+              */
+
+             var baseSetToString = !defineProperty ? identity : function (func, string) {
+               return defineProperty(func, 'toString', {
+                 'configurable': true,
+                 'enumerable': false,
+                 'value': constant(string),
+                 'writable': true
+               });
+             };
+             /**
+              * The base implementation of `_.shuffle`.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to shuffle.
+              * @returns {Array} Returns the new shuffled array.
+              */
+
+             function baseShuffle(collection) {
+               return shuffleSelf(values(collection));
+             }
+             /**
+              * The base implementation of `_.slice` without an iteratee call guard.
+              *
+              * @private
+              * @param {Array} array The array to slice.
+              * @param {number} [start=0] The start position.
+              * @param {number} [end=array.length] The end position.
+              * @returns {Array} Returns the slice of `array`.
+              */
+
+
+             function baseSlice(array, start, end) {
+               var index = -1,
+                   length = array.length;
+
+               if (start < 0) {
+                 start = -start > length ? 0 : length + start;
+               }
+
+               end = end > length ? length : end;
+
+               if (end < 0) {
+                 end += length;
+               }
+
+               length = start > end ? 0 : end - start >>> 0;
+               start >>>= 0;
+               var result = Array(length);
+
+               while (++index < length) {
+                 result[index] = array[index + start];
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.some` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} predicate The function invoked per iteration.
+              * @returns {boolean} Returns `true` if any element passes the predicate check,
+              *  else `false`.
+              */
+
+
+             function baseSome(collection, predicate) {
+               var result;
+               baseEach(collection, function (value, index, collection) {
+                 result = predicate(value, index, collection);
+                 return !result;
+               });
+               return !!result;
+             }
+             /**
+              * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
+              * performs a binary search of `array` to determine the index at which `value`
+              * should be inserted into `array` in order to maintain its sort order.
+              *
+              * @private
+              * @param {Array} array The sorted array to inspect.
+              * @param {*} value The value to evaluate.
+              * @param {boolean} [retHighest] Specify returning the highest qualified index.
+              * @returns {number} Returns the index at which `value` should be inserted
+              *  into `array`.
+              */
+
+
+             function baseSortedIndex(array, value, retHighest) {
+               var low = 0,
+                   high = array == null ? low : array.length;
+
+               if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
+                 while (low < high) {
+                   var mid = low + high >>> 1,
+                       computed = array[mid];
+
+                   if (computed !== null && !isSymbol(computed) && (retHighest ? computed <= value : computed < value)) {
+                     low = mid + 1;
+                   } else {
+                     high = mid;
+                   }
+                 }
+
+                 return high;
+               }
+
+               return baseSortedIndexBy(array, value, identity, retHighest);
+             }
+             /**
+              * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
+              * which invokes `iteratee` for `value` and each element of `array` to compute
+              * their sort ranking. The iteratee is invoked with one argument; (value).
+              *
+              * @private
+              * @param {Array} array The sorted array to inspect.
+              * @param {*} value The value to evaluate.
+              * @param {Function} iteratee The iteratee invoked per element.
+              * @param {boolean} [retHighest] Specify returning the highest qualified index.
+              * @returns {number} Returns the index at which `value` should be inserted
+              *  into `array`.
+              */
+
+
+             function baseSortedIndexBy(array, value, iteratee, retHighest) {
+               var low = 0,
+                   high = array == null ? 0 : array.length;
+
+               if (high === 0) {
+                 return 0;
+               }
+
+               value = iteratee(value);
+               var valIsNaN = value !== value,
+                   valIsNull = value === null,
+                   valIsSymbol = isSymbol(value),
+                   valIsUndefined = value === undefined$1;
+
+               while (low < high) {
+                 var mid = nativeFloor((low + high) / 2),
+                     computed = iteratee(array[mid]),
+                     othIsDefined = computed !== undefined$1,
+                     othIsNull = computed === null,
+                     othIsReflexive = computed === computed,
+                     othIsSymbol = isSymbol(computed);
+
+                 if (valIsNaN) {
+                   var setLow = retHighest || othIsReflexive;
+                 } else if (valIsUndefined) {
+                   setLow = othIsReflexive && (retHighest || othIsDefined);
+                 } else if (valIsNull) {
+                   setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
+                 } else if (valIsSymbol) {
+                   setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
+                 } else if (othIsNull || othIsSymbol) {
+                   setLow = false;
+                 } else {
+                   setLow = retHighest ? computed <= value : computed < value;
+                 }
+
+                 if (setLow) {
+                   low = mid + 1;
+                 } else {
+                   high = mid;
+                 }
+               }
+
+               return nativeMin(high, MAX_ARRAY_INDEX);
+             }
+             /**
+              * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
+              * support for iteratee shorthands.
+              *
+              * @private
+              * @param {Array} array The array to inspect.
+              * @param {Function} [iteratee] The iteratee invoked per element.
+              * @returns {Array} Returns the new duplicate free array.
+              */
+
+
+             function baseSortedUniq(array, iteratee) {
+               var index = -1,
+                   length = array.length,
+                   resIndex = 0,
+                   result = [];
+
+               while (++index < length) {
+                 var value = array[index],
+                     computed = iteratee ? iteratee(value) : value;
+
+                 if (!index || !eq(computed, seen)) {
+                   var seen = computed;
+                   result[resIndex++] = value === 0 ? 0 : value;
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.toNumber` which doesn't ensure correct
+              * conversions of binary, hexadecimal, or octal string values.
+              *
+              * @private
+              * @param {*} value The value to process.
+              * @returns {number} Returns the number.
+              */
+
+
+             function baseToNumber(value) {
+               if (typeof value == 'number') {
+                 return value;
+               }
+
+               if (isSymbol(value)) {
+                 return NAN;
+               }
+
+               return +value;
+             }
+             /**
+              * The base implementation of `_.toString` which doesn't convert nullish
+              * values to empty strings.
+              *
+              * @private
+              * @param {*} value The value to process.
+              * @returns {string} Returns the string.
+              */
+
+
+             function baseToString(value) {
+               // Exit early for strings to avoid a performance hit in some environments.
+               if (typeof value == 'string') {
+                 return value;
+               }
+
+               if (isArray(value)) {
+                 // Recursively convert values (susceptible to call stack limits).
+                 return arrayMap(value, baseToString) + '';
+               }
+
+               if (isSymbol(value)) {
+                 return symbolToString ? symbolToString.call(value) : '';
+               }
+
+               var result = value + '';
+               return result == '0' && 1 / value == -INFINITY ? '-0' : result;
+             }
+             /**
+              * The base implementation of `_.uniqBy` without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Array} array The array to inspect.
+              * @param {Function} [iteratee] The iteratee invoked per element.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns the new duplicate free array.
+              */
+
+
+             function baseUniq(array, iteratee, comparator) {
+               var index = -1,
+                   includes = arrayIncludes,
+                   length = array.length,
+                   isCommon = true,
+                   result = [],
+                   seen = result;
+
+               if (comparator) {
+                 isCommon = false;
+                 includes = arrayIncludesWith;
+               } else if (length >= LARGE_ARRAY_SIZE) {
+                 var set = iteratee ? null : createSet(array);
+
+                 if (set) {
+                   return setToArray(set);
+                 }
+
+                 isCommon = false;
+                 includes = cacheHas;
+                 seen = new SetCache();
+               } else {
+                 seen = iteratee ? [] : result;
+               }
+
+               outer: while (++index < length) {
+                 var value = array[index],
+                     computed = iteratee ? iteratee(value) : value;
+                 value = comparator || value !== 0 ? value : 0;
+
+                 if (isCommon && computed === computed) {
+                   var seenIndex = seen.length;
+
+                   while (seenIndex--) {
+                     if (seen[seenIndex] === computed) {
+                       continue outer;
+                     }
+                   }
+
+                   if (iteratee) {
+                     seen.push(computed);
+                   }
+
+                   result.push(value);
+                 } else if (!includes(seen, computed, comparator)) {
+                   if (seen !== result) {
+                     seen.push(computed);
+                   }
+
+                   result.push(value);
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * The base implementation of `_.unset`.
+              *
+              * @private
+              * @param {Object} object The object to modify.
+              * @param {Array|string} path The property path to unset.
+              * @returns {boolean} Returns `true` if the property is deleted, else `false`.
+              */
+
+
+             function baseUnset(object, path) {
+               path = castPath(path, object);
+               object = parent(object, path);
+               return object == null || delete object[toKey(last(path))];
+             }
+             /**
+              * The base implementation of `_.update`.
+              *
+              * @private
+              * @param {Object} object The object to modify.
+              * @param {Array|string} path The path of the property to update.
+              * @param {Function} updater The function to produce the updated value.
+              * @param {Function} [customizer] The function to customize path creation.
+              * @returns {Object} Returns `object`.
+              */
+
+
+             function baseUpdate(object, path, updater, customizer) {
+               return baseSet(object, path, updater(baseGet(object, path)), customizer);
+             }
+             /**
+              * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
+              * without support for iteratee shorthands.
+              *
+              * @private
+              * @param {Array} array The array to query.
+              * @param {Function} predicate The function invoked per iteration.
+              * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
+              * @param {boolean} [fromRight] Specify iterating from right to left.
+              * @returns {Array} Returns the slice of `array`.
+              */
+
+
+             function baseWhile(array, predicate, isDrop, fromRight) {
+               var length = array.length,
+                   index = fromRight ? length : -1;
+
+               while ((fromRight ? index-- : ++index < length) && predicate(array[index], index, array)) {}
+
+               return isDrop ? baseSlice(array, fromRight ? 0 : index, fromRight ? index + 1 : length) : baseSlice(array, fromRight ? index + 1 : 0, fromRight ? length : index);
+             }
+             /**
+              * The base implementation of `wrapperValue` which returns the result of
+              * performing a sequence of actions on the unwrapped `value`, where each
+              * successive action is supplied the return value of the previous.
+              *
+              * @private
+              * @param {*} value The unwrapped value.
+              * @param {Array} actions Actions to perform to resolve the unwrapped value.
+              * @returns {*} Returns the resolved value.
+              */
+
+
+             function baseWrapperValue(value, actions) {
+               var result = value;
+
+               if (result instanceof LazyWrapper) {
+                 result = result.value();
+               }
+
+               return arrayReduce(actions, function (result, action) {
+                 return action.func.apply(action.thisArg, arrayPush([result], action.args));
+               }, result);
+             }
+             /**
+              * The base implementation of methods like `_.xor`, without support for
+              * iteratee shorthands, that accepts an array of arrays to inspect.
+              *
+              * @private
+              * @param {Array} arrays The arrays to inspect.
+              * @param {Function} [iteratee] The iteratee invoked per element.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns the new array of values.
+              */
+
+
+             function baseXor(arrays, iteratee, comparator) {
+               var length = arrays.length;
+
+               if (length < 2) {
+                 return length ? baseUniq(arrays[0]) : [];
+               }
+
+               var index = -1,
+                   result = Array(length);
+
+               while (++index < length) {
+                 var array = arrays[index],
+                     othIndex = -1;
+
+                 while (++othIndex < length) {
+                   if (othIndex != index) {
+                     result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
+                   }
+                 }
+               }
+
+               return baseUniq(baseFlatten(result, 1), iteratee, comparator);
+             }
+             /**
+              * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
+              *
+              * @private
+              * @param {Array} props The property identifiers.
+              * @param {Array} values The property values.
+              * @param {Function} assignFunc The function to assign values.
+              * @returns {Object} Returns the new object.
+              */
+
+
+             function baseZipObject(props, values, assignFunc) {
+               var index = -1,
+                   length = props.length,
+                   valsLength = values.length,
+                   result = {};
+
+               while (++index < length) {
+                 var value = index < valsLength ? values[index] : undefined$1;
+                 assignFunc(result, props[index], value);
+               }
+
+               return result;
+             }
+             /**
+              * Casts `value` to an empty array if it's not an array like object.
+              *
+              * @private
+              * @param {*} value The value to inspect.
+              * @returns {Array|Object} Returns the cast array-like object.
+              */
+
+
+             function castArrayLikeObject(value) {
+               return isArrayLikeObject(value) ? value : [];
+             }
+             /**
+              * Casts `value` to `identity` if it's not a function.
+              *
+              * @private
+              * @param {*} value The value to inspect.
+              * @returns {Function} Returns cast function.
+              */
+
+
+             function castFunction(value) {
+               return typeof value == 'function' ? value : identity;
+             }
+             /**
+              * Casts `value` to a path array if it's not one.
+              *
+              * @private
+              * @param {*} value The value to inspect.
+              * @param {Object} [object] The object to query keys on.
+              * @returns {Array} Returns the cast property path array.
+              */
+
+
+             function castPath(value, object) {
+               if (isArray(value)) {
+                 return value;
+               }
+
+               return isKey(value, object) ? [value] : stringToPath(toString(value));
+             }
+             /**
+              * A `baseRest` alias which can be replaced with `identity` by module
+              * replacement plugins.
+              *
+              * @private
+              * @type {Function}
+              * @param {Function} func The function to apply a rest parameter to.
+              * @returns {Function} Returns the new function.
+              */
+
+
+             var castRest = baseRest;
+             /**
+              * Casts `array` to a slice if it's needed.
+              *
+              * @private
+              * @param {Array} array The array to inspect.
+              * @param {number} start The start position.
+              * @param {number} [end=array.length] The end position.
+              * @returns {Array} Returns the cast slice.
+              */
+
+             function castSlice(array, start, end) {
+               var length = array.length;
+               end = end === undefined$1 ? length : end;
+               return !start && end >= length ? array : baseSlice(array, start, end);
+             }
+             /**
+              * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).
+              *
+              * @private
+              * @param {number|Object} id The timer id or timeout object of the timer to clear.
+              */
+
+
+             var clearTimeout = ctxClearTimeout || function (id) {
+               return root.clearTimeout(id);
+             };
+             /**
+              * Creates a clone of  `buffer`.
+              *
+              * @private
+              * @param {Buffer} buffer The buffer to clone.
+              * @param {boolean} [isDeep] Specify a deep clone.
+              * @returns {Buffer} Returns the cloned buffer.
+              */
+
+
+             function cloneBuffer(buffer, isDeep) {
+               if (isDeep) {
+                 return buffer.slice();
+               }
+
+               var length = buffer.length,
+                   result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);
+               buffer.copy(result);
+               return result;
+             }
+             /**
+              * Creates a clone of `arrayBuffer`.
+              *
+              * @private
+              * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
+              * @returns {ArrayBuffer} Returns the cloned array buffer.
+              */
+
+
+             function cloneArrayBuffer(arrayBuffer) {
+               var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
+               new Uint8Array(result).set(new Uint8Array(arrayBuffer));
+               return result;
+             }
+             /**
+              * Creates a clone of `dataView`.
+              *
+              * @private
+              * @param {Object} dataView The data view to clone.
+              * @param {boolean} [isDeep] Specify a deep clone.
+              * @returns {Object} Returns the cloned data view.
+              */
+
+
+             function cloneDataView(dataView, isDeep) {
+               var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
+               return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
+             }
+             /**
+              * Creates a clone of `regexp`.
+              *
+              * @private
+              * @param {Object} regexp The regexp to clone.
+              * @returns {Object} Returns the cloned regexp.
+              */
+
+
+             function cloneRegExp(regexp) {
+               var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
+               result.lastIndex = regexp.lastIndex;
+               return result;
+             }
+             /**
+              * Creates a clone of the `symbol` object.
+              *
+              * @private
+              * @param {Object} symbol The symbol object to clone.
+              * @returns {Object} Returns the cloned symbol object.
+              */
+
+
+             function cloneSymbol(symbol) {
+               return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
+             }
+             /**
+              * Creates a clone of `typedArray`.
+              *
+              * @private
+              * @param {Object} typedArray The typed array to clone.
+              * @param {boolean} [isDeep] Specify a deep clone.
+              * @returns {Object} Returns the cloned typed array.
+              */
+
+
+             function cloneTypedArray(typedArray, isDeep) {
+               var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
+               return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
+             }
+             /**
+              * Compares values to sort them in ascending order.
+              *
+              * @private
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @returns {number} Returns the sort order indicator for `value`.
+              */
+
+
+             function compareAscending(value, other) {
+               if (value !== other) {
+                 var valIsDefined = value !== undefined$1,
+                     valIsNull = value === null,
+                     valIsReflexive = value === value,
+                     valIsSymbol = isSymbol(value);
+                 var othIsDefined = other !== undefined$1,
+                     othIsNull = other === null,
+                     othIsReflexive = other === other,
+                     othIsSymbol = isSymbol(other);
+
+                 if (!othIsNull && !othIsSymbol && !valIsSymbol && value > other || valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol || valIsNull && othIsDefined && othIsReflexive || !valIsDefined && othIsReflexive || !valIsReflexive) {
+                   return 1;
+                 }
+
+                 if (!valIsNull && !valIsSymbol && !othIsSymbol && value < other || othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol || othIsNull && valIsDefined && valIsReflexive || !othIsDefined && valIsReflexive || !othIsReflexive) {
+                   return -1;
+                 }
+               }
+
+               return 0;
+             }
+             /**
+              * Used by `_.orderBy` to compare multiple properties of a value to another
+              * and stable sort them.
+              *
+              * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
+              * specify an order of "desc" for descending or "asc" for ascending sort order
+              * of corresponding values.
+              *
+              * @private
+              * @param {Object} object The object to compare.
+              * @param {Object} other The other object to compare.
+              * @param {boolean[]|string[]} orders The order to sort by for each property.
+              * @returns {number} Returns the sort order indicator for `object`.
+              */
+
+
+             function compareMultiple(object, other, orders) {
+               var index = -1,
+                   objCriteria = object.criteria,
+                   othCriteria = other.criteria,
+                   length = objCriteria.length,
+                   ordersLength = orders.length;
+
+               while (++index < length) {
+                 var result = compareAscending(objCriteria[index], othCriteria[index]);
+
+                 if (result) {
+                   if (index >= ordersLength) {
+                     return result;
+                   }
+
+                   var order = orders[index];
+                   return result * (order == 'desc' ? -1 : 1);
+                 }
+               } // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
+               // that causes it, under certain circumstances, to provide the same value for
+               // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
+               // for more details.
+               //
+               // This also ensures a stable sort in V8 and other engines.
+               // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
+
+
+               return object.index - other.index;
+             }
+             /**
+              * Creates an array that is the composition of partially applied arguments,
+              * placeholders, and provided arguments into a single array of arguments.
+              *
+              * @private
+              * @param {Array} args The provided arguments.
+              * @param {Array} partials The arguments to prepend to those provided.
+              * @param {Array} holders The `partials` placeholder indexes.
+              * @params {boolean} [isCurried] Specify composing for a curried function.
+              * @returns {Array} Returns the new array of composed arguments.
+              */
+
+
+             function composeArgs(args, partials, holders, isCurried) {
+               var argsIndex = -1,
+                   argsLength = args.length,
+                   holdersLength = holders.length,
+                   leftIndex = -1,
+                   leftLength = partials.length,
+                   rangeLength = nativeMax(argsLength - holdersLength, 0),
+                   result = Array(leftLength + rangeLength),
+                   isUncurried = !isCurried;
+
+               while (++leftIndex < leftLength) {
+                 result[leftIndex] = partials[leftIndex];
+               }
+
+               while (++argsIndex < holdersLength) {
+                 if (isUncurried || argsIndex < argsLength) {
+                   result[holders[argsIndex]] = args[argsIndex];
+                 }
+               }
+
+               while (rangeLength--) {
+                 result[leftIndex++] = args[argsIndex++];
+               }
+
+               return result;
+             }
+             /**
+              * This function is like `composeArgs` except that the arguments composition
+              * is tailored for `_.partialRight`.
+              *
+              * @private
+              * @param {Array} args The provided arguments.
+              * @param {Array} partials The arguments to append to those provided.
+              * @param {Array} holders The `partials` placeholder indexes.
+              * @params {boolean} [isCurried] Specify composing for a curried function.
+              * @returns {Array} Returns the new array of composed arguments.
+              */
+
+
+             function composeArgsRight(args, partials, holders, isCurried) {
+               var argsIndex = -1,
+                   argsLength = args.length,
+                   holdersIndex = -1,
+                   holdersLength = holders.length,
+                   rightIndex = -1,
+                   rightLength = partials.length,
+                   rangeLength = nativeMax(argsLength - holdersLength, 0),
+                   result = Array(rangeLength + rightLength),
+                   isUncurried = !isCurried;
+
+               while (++argsIndex < rangeLength) {
+                 result[argsIndex] = args[argsIndex];
+               }
+
+               var offset = argsIndex;
+
+               while (++rightIndex < rightLength) {
+                 result[offset + rightIndex] = partials[rightIndex];
+               }
+
+               while (++holdersIndex < holdersLength) {
+                 if (isUncurried || argsIndex < argsLength) {
+                   result[offset + holders[holdersIndex]] = args[argsIndex++];
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * Copies the values of `source` to `array`.
+              *
+              * @private
+              * @param {Array} source The array to copy values from.
+              * @param {Array} [array=[]] The array to copy values to.
+              * @returns {Array} Returns `array`.
+              */
+
+
+             function copyArray(source, array) {
+               var index = -1,
+                   length = source.length;
+               array || (array = Array(length));
+
+               while (++index < length) {
+                 array[index] = source[index];
+               }
+
+               return array;
+             }
+             /**
+              * Copies properties of `source` to `object`.
+              *
+              * @private
+              * @param {Object} source The object to copy properties from.
+              * @param {Array} props The property identifiers to copy.
+              * @param {Object} [object={}] The object to copy properties to.
+              * @param {Function} [customizer] The function to customize copied values.
+              * @returns {Object} Returns `object`.
+              */
+
+
+             function copyObject(source, props, object, customizer) {
+               var isNew = !object;
+               object || (object = {});
+               var index = -1,
+                   length = props.length;
+
+               while (++index < length) {
+                 var key = props[index];
+                 var newValue = customizer ? customizer(object[key], source[key], key, object, source) : undefined$1;
+
+                 if (newValue === undefined$1) {
+                   newValue = source[key];
+                 }
+
+                 if (isNew) {
+                   baseAssignValue(object, key, newValue);
+                 } else {
+                   assignValue(object, key, newValue);
+                 }
+               }
+
+               return object;
+             }
+             /**
+              * Copies own symbols of `source` to `object`.
+              *
+              * @private
+              * @param {Object} source The object to copy symbols from.
+              * @param {Object} [object={}] The object to copy symbols to.
+              * @returns {Object} Returns `object`.
+              */
+
+
+             function copySymbols(source, object) {
+               return copyObject(source, getSymbols(source), object);
+             }
+             /**
+              * Copies own and inherited symbols of `source` to `object`.
+              *
+              * @private
+              * @param {Object} source The object to copy symbols from.
+              * @param {Object} [object={}] The object to copy symbols to.
+              * @returns {Object} Returns `object`.
+              */
+
+
+             function copySymbolsIn(source, object) {
+               return copyObject(source, getSymbolsIn(source), object);
+             }
+             /**
+              * Creates a function like `_.groupBy`.
+              *
+              * @private
+              * @param {Function} setter The function to set accumulator values.
+              * @param {Function} [initializer] The accumulator object initializer.
+              * @returns {Function} Returns the new aggregator function.
+              */
+
+
+             function createAggregator(setter, initializer) {
+               return function (collection, iteratee) {
+                 var func = isArray(collection) ? arrayAggregator : baseAggregator,
+                     accumulator = initializer ? initializer() : {};
+                 return func(collection, setter, getIteratee(iteratee, 2), accumulator);
+               };
+             }
+             /**
+              * Creates a function like `_.assign`.
+              *
+              * @private
+              * @param {Function} assigner The function to assign values.
+              * @returns {Function} Returns the new assigner function.
+              */
+
+
+             function createAssigner(assigner) {
+               return baseRest(function (object, sources) {
+                 var index = -1,
+                     length = sources.length,
+                     customizer = length > 1 ? sources[length - 1] : undefined$1,
+                     guard = length > 2 ? sources[2] : undefined$1;
+                 customizer = assigner.length > 3 && typeof customizer == 'function' ? (length--, customizer) : undefined$1;
+
+                 if (guard && isIterateeCall(sources[0], sources[1], guard)) {
+                   customizer = length < 3 ? undefined$1 : customizer;
+                   length = 1;
+                 }
+
+                 object = Object(object);
+
+                 while (++index < length) {
+                   var source = sources[index];
+
+                   if (source) {
+                     assigner(object, source, index, customizer);
+                   }
+                 }
+
+                 return object;
+               });
+             }
+             /**
+              * Creates a `baseEach` or `baseEachRight` function.
+              *
+              * @private
+              * @param {Function} eachFunc The function to iterate over a collection.
+              * @param {boolean} [fromRight] Specify iterating from right to left.
+              * @returns {Function} Returns the new base function.
+              */
+
+
+             function createBaseEach(eachFunc, fromRight) {
+               return function (collection, iteratee) {
+                 if (collection == null) {
+                   return collection;
+                 }
+
+                 if (!isArrayLike(collection)) {
+                   return eachFunc(collection, iteratee);
+                 }
+
+                 var length = collection.length,
+                     index = fromRight ? length : -1,
+                     iterable = Object(collection);
+
+                 while (fromRight ? index-- : ++index < length) {
+                   if (iteratee(iterable[index], index, iterable) === false) {
+                     break;
+                   }
+                 }
+
+                 return collection;
+               };
+             }
+             /**
+              * Creates a base function for methods like `_.forIn` and `_.forOwn`.
+              *
+              * @private
+              * @param {boolean} [fromRight] Specify iterating from right to left.
+              * @returns {Function} Returns the new base function.
+              */
+
+
+             function createBaseFor(fromRight) {
+               return function (object, iteratee, keysFunc) {
+                 var index = -1,
+                     iterable = Object(object),
+                     props = keysFunc(object),
+                     length = props.length;
+
+                 while (length--) {
+                   var key = props[fromRight ? length : ++index];
+
+                   if (iteratee(iterable[key], key, iterable) === false) {
+                     break;
+                   }
+                 }
+
+                 return object;
+               };
+             }
+             /**
+              * Creates a function that wraps `func` to invoke it with the optional `this`
+              * binding of `thisArg`.
+              *
+              * @private
+              * @param {Function} func The function to wrap.
+              * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
+              * @param {*} [thisArg] The `this` binding of `func`.
+              * @returns {Function} Returns the new wrapped function.
+              */
+
+
+             function createBind(func, bitmask, thisArg) {
+               var isBind = bitmask & WRAP_BIND_FLAG,
+                   Ctor = createCtor(func);
+
+               function wrapper() {
+                 var fn = this && this !== root && this instanceof wrapper ? Ctor : func;
+                 return fn.apply(isBind ? thisArg : this, arguments);
+               }
+
+               return wrapper;
+             }
+             /**
+              * Creates a function like `_.lowerFirst`.
+              *
+              * @private
+              * @param {string} methodName The name of the `String` case method to use.
+              * @returns {Function} Returns the new case function.
+              */
+
+
+             function createCaseFirst(methodName) {
+               return function (string) {
+                 string = toString(string);
+                 var strSymbols = hasUnicode(string) ? stringToArray(string) : undefined$1;
+                 var chr = strSymbols ? strSymbols[0] : string.charAt(0);
+                 var trailing = strSymbols ? castSlice(strSymbols, 1).join('') : string.slice(1);
+                 return chr[methodName]() + trailing;
+               };
+             }
+             /**
+              * Creates a function like `_.camelCase`.
+              *
+              * @private
+              * @param {Function} callback The function to combine each word.
+              * @returns {Function} Returns the new compounder function.
+              */
+
+
+             function createCompounder(callback) {
+               return function (string) {
+                 return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
+               };
+             }
+             /**
+              * Creates a function that produces an instance of `Ctor` regardless of
+              * whether it was invoked as part of a `new` expression or by `call` or `apply`.
+              *
+              * @private
+              * @param {Function} Ctor The constructor to wrap.
+              * @returns {Function} Returns the new wrapped function.
+              */
+
+
+             function createCtor(Ctor) {
+               return function () {
+                 // Use a `switch` statement to work with class constructors. See
+                 // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
+                 // for more details.
+                 var args = arguments;
+
+                 switch (args.length) {
+                   case 0:
+                     return new Ctor();
+
+                   case 1:
+                     return new Ctor(args[0]);
+
+                   case 2:
+                     return new Ctor(args[0], args[1]);
+
+                   case 3:
+                     return new Ctor(args[0], args[1], args[2]);
+
+                   case 4:
+                     return new Ctor(args[0], args[1], args[2], args[3]);
+
+                   case 5:
+                     return new Ctor(args[0], args[1], args[2], args[3], args[4]);
+
+                   case 6:
+                     return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
+
+                   case 7:
+                     return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
+                 }
+
+                 var thisBinding = baseCreate(Ctor.prototype),
+                     result = Ctor.apply(thisBinding, args); // Mimic the constructor's `return` behavior.
+                 // See https://es5.github.io/#x13.2.2 for more details.
+
+                 return isObject(result) ? result : thisBinding;
+               };
+             }
+             /**
+              * Creates a function that wraps `func` to enable currying.
+              *
+              * @private
+              * @param {Function} func The function to wrap.
+              * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
+              * @param {number} arity The arity of `func`.
+              * @returns {Function} Returns the new wrapped function.
+              */
+
+
+             function createCurry(func, bitmask, arity) {
+               var Ctor = createCtor(func);
+
+               function wrapper() {
+                 var length = arguments.length,
+                     args = Array(length),
+                     index = length,
+                     placeholder = getHolder(wrapper);
+
+                 while (index--) {
+                   args[index] = arguments[index];
+                 }
+
+                 var holders = length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder ? [] : replaceHolders(args, placeholder);
+                 length -= holders.length;
+
+                 if (length < arity) {
+                   return createRecurry(func, bitmask, createHybrid, wrapper.placeholder, undefined$1, args, holders, undefined$1, undefined$1, arity - length);
+                 }
+
+                 var fn = this && this !== root && this instanceof wrapper ? Ctor : func;
+                 return apply(fn, this, args);
+               }
+
+               return wrapper;
+             }
+             /**
+              * Creates a `_.find` or `_.findLast` function.
+              *
+              * @private
+              * @param {Function} findIndexFunc The function to find the collection index.
+              * @returns {Function} Returns the new find function.
+              */
+
+
+             function createFind(findIndexFunc) {
+               return function (collection, predicate, fromIndex) {
+                 var iterable = Object(collection);
+
+                 if (!isArrayLike(collection)) {
+                   var iteratee = getIteratee(predicate, 3);
+                   collection = keys(collection);
+
+                   predicate = function predicate(key) {
+                     return iteratee(iterable[key], key, iterable);
+                   };
+                 }
+
+                 var index = findIndexFunc(collection, predicate, fromIndex);
+                 return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined$1;
+               };
+             }
+             /**
+              * Creates a `_.flow` or `_.flowRight` function.
+              *
+              * @private
+              * @param {boolean} [fromRight] Specify iterating from right to left.
+              * @returns {Function} Returns the new flow function.
+              */
+
+
+             function createFlow(fromRight) {
+               return flatRest(function (funcs) {
+                 var length = funcs.length,
+                     index = length,
+                     prereq = LodashWrapper.prototype.thru;
+
+                 if (fromRight) {
+                   funcs.reverse();
+                 }
+
+                 while (index--) {
+                   var func = funcs[index];
+
+                   if (typeof func != 'function') {
+                     throw new TypeError(FUNC_ERROR_TEXT);
+                   }
+
+                   if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
+                     var wrapper = new LodashWrapper([], true);
+                   }
+                 }
+
+                 index = wrapper ? index : length;
+
+                 while (++index < length) {
+                   func = funcs[index];
+                   var funcName = getFuncName(func),
+                       data = funcName == 'wrapper' ? getData(func) : undefined$1;
+
+                   if (data && isLaziable(data[0]) && data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) && !data[4].length && data[9] == 1) {
+                     wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
+                   } else {
+                     wrapper = func.length == 1 && isLaziable(func) ? wrapper[funcName]() : wrapper.thru(func);
+                   }
+                 }
+
+                 return function () {
+                   var args = arguments,
+                       value = args[0];
+
+                   if (wrapper && args.length == 1 && isArray(value)) {
+                     return wrapper.plant(value).value();
+                   }
+
+                   var index = 0,
+                       result = length ? funcs[index].apply(this, args) : value;
+
+                   while (++index < length) {
+                     result = funcs[index].call(this, result);
+                   }
+
+                   return result;
+                 };
+               });
+             }
+             /**
+              * Creates a function that wraps `func` to invoke it with optional `this`
+              * binding of `thisArg`, partial application, and currying.
+              *
+              * @private
+              * @param {Function|string} func The function or method name to wrap.
+              * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
+              * @param {*} [thisArg] The `this` binding of `func`.
+              * @param {Array} [partials] The arguments to prepend to those provided to
+              *  the new function.
+              * @param {Array} [holders] The `partials` placeholder indexes.
+              * @param {Array} [partialsRight] The arguments to append to those provided
+              *  to the new function.
+              * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
+              * @param {Array} [argPos] The argument positions of the new function.
+              * @param {number} [ary] The arity cap of `func`.
+              * @param {number} [arity] The arity of `func`.
+              * @returns {Function} Returns the new wrapped function.
+              */
+
+
+             function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
+               var isAry = bitmask & WRAP_ARY_FLAG,
+                   isBind = bitmask & WRAP_BIND_FLAG,
+                   isBindKey = bitmask & WRAP_BIND_KEY_FLAG,
+                   isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),
+                   isFlip = bitmask & WRAP_FLIP_FLAG,
+                   Ctor = isBindKey ? undefined$1 : createCtor(func);
+
+               function wrapper() {
+                 var length = arguments.length,
+                     args = Array(length),
+                     index = length;
+
+                 while (index--) {
+                   args[index] = arguments[index];
+                 }
+
+                 if (isCurried) {
+                   var placeholder = getHolder(wrapper),
+                       holdersCount = countHolders(args, placeholder);
+                 }
+
+                 if (partials) {
+                   args = composeArgs(args, partials, holders, isCurried);
+                 }
+
+                 if (partialsRight) {
+                   args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
+                 }
+
+                 length -= holdersCount;
+
+                 if (isCurried && length < arity) {
+                   var newHolders = replaceHolders(args, placeholder);
+                   return createRecurry(func, bitmask, createHybrid, wrapper.placeholder, thisArg, args, newHolders, argPos, ary, arity - length);
+                 }
+
+                 var thisBinding = isBind ? thisArg : this,
+                     fn = isBindKey ? thisBinding[func] : func;
+                 length = args.length;
+
+                 if (argPos) {
+                   args = reorder(args, argPos);
+                 } else if (isFlip && length > 1) {
+                   args.reverse();
+                 }
+
+                 if (isAry && ary < length) {
+                   args.length = ary;
+                 }
+
+                 if (this && this !== root && this instanceof wrapper) {
+                   fn = Ctor || createCtor(fn);
+                 }
+
+                 return fn.apply(thisBinding, args);
+               }
+
+               return wrapper;
+             }
+             /**
+              * Creates a function like `_.invertBy`.
+              *
+              * @private
+              * @param {Function} setter The function to set accumulator values.
+              * @param {Function} toIteratee The function to resolve iteratees.
+              * @returns {Function} Returns the new inverter function.
+              */
+
+
+             function createInverter(setter, toIteratee) {
+               return function (object, iteratee) {
+                 return baseInverter(object, setter, toIteratee(iteratee), {});
+               };
+             }
+             /**
+              * Creates a function that performs a mathematical operation on two values.
+              *
+              * @private
+              * @param {Function} operator The function to perform the operation.
+              * @param {number} [defaultValue] The value used for `undefined` arguments.
+              * @returns {Function} Returns the new mathematical operation function.
+              */
+
+
+             function createMathOperation(operator, defaultValue) {
+               return function (value, other) {
+                 var result;
+
+                 if (value === undefined$1 && other === undefined$1) {
+                   return defaultValue;
+                 }
+
+                 if (value !== undefined$1) {
+                   result = value;
+                 }
+
+                 if (other !== undefined$1) {
+                   if (result === undefined$1) {
+                     return other;
+                   }
+
+                   if (typeof value == 'string' || typeof other == 'string') {
+                     value = baseToString(value);
+                     other = baseToString(other);
+                   } else {
+                     value = baseToNumber(value);
+                     other = baseToNumber(other);
+                   }
+
+                   result = operator(value, other);
+                 }
+
+                 return result;
+               };
+             }
+             /**
+              * Creates a function like `_.over`.
+              *
+              * @private
+              * @param {Function} arrayFunc The function to iterate over iteratees.
+              * @returns {Function} Returns the new over function.
+              */
+
+
+             function createOver(arrayFunc) {
+               return flatRest(function (iteratees) {
+                 iteratees = arrayMap(iteratees, baseUnary(getIteratee()));
+                 return baseRest(function (args) {
+                   var thisArg = this;
+                   return arrayFunc(iteratees, function (iteratee) {
+                     return apply(iteratee, thisArg, args);
+                   });
+                 });
+               });
+             }
+             /**
+              * Creates the padding for `string` based on `length`. The `chars` string
+              * is truncated if the number of characters exceeds `length`.
+              *
+              * @private
+              * @param {number} length The padding length.
+              * @param {string} [chars=' '] The string used as padding.
+              * @returns {string} Returns the padding for `string`.
+              */
+
+
+             function createPadding(length, chars) {
+               chars = chars === undefined$1 ? ' ' : baseToString(chars);
+               var charsLength = chars.length;
+
+               if (charsLength < 2) {
+                 return charsLength ? baseRepeat(chars, length) : chars;
+               }
+
+               var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));
+               return hasUnicode(chars) ? castSlice(stringToArray(result), 0, length).join('') : result.slice(0, length);
+             }
+             /**
+              * Creates a function that wraps `func` to invoke it with the `this` binding
+              * of `thisArg` and `partials` prepended to the arguments it receives.
+              *
+              * @private
+              * @param {Function} func The function to wrap.
+              * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
+              * @param {*} thisArg The `this` binding of `func`.
+              * @param {Array} partials The arguments to prepend to those provided to
+              *  the new function.
+              * @returns {Function} Returns the new wrapped function.
+              */
+
+
+             function createPartial(func, bitmask, thisArg, partials) {
+               var isBind = bitmask & WRAP_BIND_FLAG,
+                   Ctor = createCtor(func);
+
+               function wrapper() {
+                 var argsIndex = -1,
+                     argsLength = arguments.length,
+                     leftIndex = -1,
+                     leftLength = partials.length,
+                     args = Array(leftLength + argsLength),
+                     fn = this && this !== root && this instanceof wrapper ? Ctor : func;
+
+                 while (++leftIndex < leftLength) {
+                   args[leftIndex] = partials[leftIndex];
+                 }
+
+                 while (argsLength--) {
+                   args[leftIndex++] = arguments[++argsIndex];
+                 }
+
+                 return apply(fn, isBind ? thisArg : this, args);
+               }
+
+               return wrapper;
+             }
+             /**
+              * Creates a `_.range` or `_.rangeRight` function.
+              *
+              * @private
+              * @param {boolean} [fromRight] Specify iterating from right to left.
+              * @returns {Function} Returns the new range function.
+              */
+
+
+             function createRange(fromRight) {
+               return function (start, end, step) {
+                 if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
+                   end = step = undefined$1;
+                 } // Ensure the sign of `-0` is preserved.
+
+
+                 start = toFinite(start);
+
+                 if (end === undefined$1) {
+                   end = start;
+                   start = 0;
+                 } else {
+                   end = toFinite(end);
+                 }
+
+                 step = step === undefined$1 ? start < end ? 1 : -1 : toFinite(step);
+                 return baseRange(start, end, step, fromRight);
+               };
+             }
+             /**
+              * Creates a function that performs a relational operation on two values.
+              *
+              * @private
+              * @param {Function} operator The function to perform the operation.
+              * @returns {Function} Returns the new relational operation function.
+              */
+
+
+             function createRelationalOperation(operator) {
+               return function (value, other) {
+                 if (!(typeof value == 'string' && typeof other == 'string')) {
+                   value = toNumber(value);
+                   other = toNumber(other);
+                 }
+
+                 return operator(value, other);
+               };
+             }
+             /**
+              * Creates a function that wraps `func` to continue currying.
+              *
+              * @private
+              * @param {Function} func The function to wrap.
+              * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
+              * @param {Function} wrapFunc The function to create the `func` wrapper.
+              * @param {*} placeholder The placeholder value.
+              * @param {*} [thisArg] The `this` binding of `func`.
+              * @param {Array} [partials] The arguments to prepend to those provided to
+              *  the new function.
+              * @param {Array} [holders] The `partials` placeholder indexes.
+              * @param {Array} [argPos] The argument positions of the new function.
+              * @param {number} [ary] The arity cap of `func`.
+              * @param {number} [arity] The arity of `func`.
+              * @returns {Function} Returns the new wrapped function.
+              */
+
+
+             function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
+               var isCurry = bitmask & WRAP_CURRY_FLAG,
+                   newHolders = isCurry ? holders : undefined$1,
+                   newHoldersRight = isCurry ? undefined$1 : holders,
+                   newPartials = isCurry ? partials : undefined$1,
+                   newPartialsRight = isCurry ? undefined$1 : partials;
+               bitmask |= isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG;
+               bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);
+
+               if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
+                 bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);
+               }
+
+               var newData = [func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, newHoldersRight, argPos, ary, arity];
+               var result = wrapFunc.apply(undefined$1, newData);
+
+               if (isLaziable(func)) {
+                 setData(result, newData);
+               }
+
+               result.placeholder = placeholder;
+               return setWrapToString(result, func, bitmask);
+             }
+             /**
+              * Creates a function like `_.round`.
+              *
+              * @private
+              * @param {string} methodName The name of the `Math` method to use when rounding.
+              * @returns {Function} Returns the new round function.
+              */
+
+
+             function createRound(methodName) {
+               var func = Math[methodName];
+               return function (number, precision) {
+                 number = toNumber(number);
+                 precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);
+
+                 if (precision && nativeIsFinite(number)) {
+                   // Shift with exponential notation to avoid floating-point issues.
+                   // See [MDN](https://mdn.io/round#Examples) for more details.
+                   var pair = (toString(number) + 'e').split('e'),
+                       value = func(pair[0] + 'e' + (+pair[1] + precision));
+                   pair = (toString(value) + 'e').split('e');
+                   return +(pair[0] + 'e' + (+pair[1] - precision));
+                 }
+
+                 return func(number);
+               };
+             }
+             /**
+              * Creates a set object of `values`.
+              *
+              * @private
+              * @param {Array} values The values to add to the set.
+              * @returns {Object} Returns the new set.
+              */
+
+
+             var createSet = !(Set && 1 / setToArray(new Set([, -0]))[1] == INFINITY) ? noop : function (values) {
+               return new Set(values);
+             };
+             /**
+              * Creates a `_.toPairs` or `_.toPairsIn` function.
+              *
+              * @private
+              * @param {Function} keysFunc The function to get the keys of a given object.
+              * @returns {Function} Returns the new pairs function.
+              */
+
+             function createToPairs(keysFunc) {
+               return function (object) {
+                 var tag = getTag(object);
+
+                 if (tag == mapTag) {
+                   return mapToArray(object);
+                 }
+
+                 if (tag == setTag) {
+                   return setToPairs(object);
+                 }
+
+                 return baseToPairs(object, keysFunc(object));
+               };
+             }
+             /**
+              * Creates a function that either curries or invokes `func` with optional
+              * `this` binding and partially applied arguments.
+              *
+              * @private
+              * @param {Function|string} func The function or method name to wrap.
+              * @param {number} bitmask The bitmask flags.
+              *    1 - `_.bind`
+              *    2 - `_.bindKey`
+              *    4 - `_.curry` or `_.curryRight` of a bound function
+              *    8 - `_.curry`
+              *   16 - `_.curryRight`
+              *   32 - `_.partial`
+              *   64 - `_.partialRight`
+              *  128 - `_.rearg`
+              *  256 - `_.ary`
+              *  512 - `_.flip`
+              * @param {*} [thisArg] The `this` binding of `func`.
+              * @param {Array} [partials] The arguments to be partially applied.
+              * @param {Array} [holders] The `partials` placeholder indexes.
+              * @param {Array} [argPos] The argument positions of the new function.
+              * @param {number} [ary] The arity cap of `func`.
+              * @param {number} [arity] The arity of `func`.
+              * @returns {Function} Returns the new wrapped function.
+              */
+
+
+             function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
+               var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
+
+               if (!isBindKey && typeof func != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               var length = partials ? partials.length : 0;
+
+               if (!length) {
+                 bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
+                 partials = holders = undefined$1;
+               }
+
+               ary = ary === undefined$1 ? ary : nativeMax(toInteger(ary), 0);
+               arity = arity === undefined$1 ? arity : toInteger(arity);
+               length -= holders ? holders.length : 0;
+
+               if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
+                 var partialsRight = partials,
+                     holdersRight = holders;
+                 partials = holders = undefined$1;
+               }
+
+               var data = isBindKey ? undefined$1 : getData(func);
+               var newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];
+
+               if (data) {
+                 mergeData(newData, data);
+               }
+
+               func = newData[0];
+               bitmask = newData[1];
+               thisArg = newData[2];
+               partials = newData[3];
+               holders = newData[4];
+               arity = newData[9] = newData[9] === undefined$1 ? isBindKey ? 0 : func.length : nativeMax(newData[9] - length, 0);
+
+               if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
+                 bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
+               }
+
+               if (!bitmask || bitmask == WRAP_BIND_FLAG) {
+                 var result = createBind(func, bitmask, thisArg);
+               } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
+                 result = createCurry(func, bitmask, arity);
+               } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
+                 result = createPartial(func, bitmask, thisArg, partials);
+               } else {
+                 result = createHybrid.apply(undefined$1, newData);
+               }
+
+               var setter = data ? baseSetData : setData;
+               return setWrapToString(setter(result, newData), func, bitmask);
+             }
+             /**
+              * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
+              * of source objects to the destination object for all destination properties
+              * that resolve to `undefined`.
+              *
+              * @private
+              * @param {*} objValue The destination value.
+              * @param {*} srcValue The source value.
+              * @param {string} key The key of the property to assign.
+              * @param {Object} object The parent object of `objValue`.
+              * @returns {*} Returns the value to assign.
+              */
+
+
+             function customDefaultsAssignIn(objValue, srcValue, key, object) {
+               if (objValue === undefined$1 || eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key)) {
+                 return srcValue;
+               }
+
+               return objValue;
+             }
+             /**
+              * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
+              * objects into destination objects that are passed thru.
+              *
+              * @private
+              * @param {*} objValue The destination value.
+              * @param {*} srcValue The source value.
+              * @param {string} key The key of the property to merge.
+              * @param {Object} object The parent object of `objValue`.
+              * @param {Object} source The parent object of `srcValue`.
+              * @param {Object} [stack] Tracks traversed source values and their merged
+              *  counterparts.
+              * @returns {*} Returns the value to assign.
+              */
+
+
+             function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
+               if (isObject(objValue) && isObject(srcValue)) {
+                 // Recursively merge objects and arrays (susceptible to call stack limits).
+                 stack.set(srcValue, objValue);
+                 baseMerge(objValue, srcValue, undefined$1, customDefaultsMerge, stack);
+                 stack['delete'](srcValue);
+               }
+
+               return objValue;
+             }
+             /**
+              * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
+              * objects.
+              *
+              * @private
+              * @param {*} value The value to inspect.
+              * @param {string} key The key of the property to inspect.
+              * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
+              */
+
+
+             function customOmitClone(value) {
+               return isPlainObject(value) ? undefined$1 : value;
+             }
+             /**
+              * A specialized version of `baseIsEqualDeep` for arrays with support for
+              * partial deep comparisons.
+              *
+              * @private
+              * @param {Array} array The array to compare.
+              * @param {Array} other The other array to compare.
+              * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+              * @param {Function} customizer The function to customize comparisons.
+              * @param {Function} equalFunc The function to determine equivalents of values.
+              * @param {Object} stack Tracks traversed `array` and `other` objects.
+              * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
+              */
+
+
+             function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
+               var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
+                   arrLength = array.length,
+                   othLength = other.length;
+
+               if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
+                 return false;
+               } // Check that cyclic values are equal.
+
+
+               var arrStacked = stack.get(array);
+               var othStacked = stack.get(other);
+
+               if (arrStacked && othStacked) {
+                 return arrStacked == other && othStacked == array;
+               }
+
+               var index = -1,
+                   result = true,
+                   seen = bitmask & COMPARE_UNORDERED_FLAG ? new SetCache() : undefined$1;
+               stack.set(array, other);
+               stack.set(other, array); // Ignore non-index properties.
+
+               while (++index < arrLength) {
+                 var arrValue = array[index],
+                     othValue = other[index];
+
+                 if (customizer) {
+                   var compared = isPartial ? customizer(othValue, arrValue, index, other, array, stack) : customizer(arrValue, othValue, index, array, other, stack);
+                 }
+
+                 if (compared !== undefined$1) {
+                   if (compared) {
+                     continue;
+                   }
+
+                   result = false;
+                   break;
+                 } // Recursively compare arrays (susceptible to call stack limits).
+
+
+                 if (seen) {
+                   if (!arraySome(other, function (othValue, othIndex) {
+                     if (!cacheHas(seen, othIndex) && (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
+                       return seen.push(othIndex);
+                     }
+                   })) {
+                     result = false;
+                     break;
+                   }
+                 } else if (!(arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
+                   result = false;
+                   break;
+                 }
+               }
+
+               stack['delete'](array);
+               stack['delete'](other);
+               return result;
+             }
+             /**
+              * A specialized version of `baseIsEqualDeep` for comparing objects of
+              * the same `toStringTag`.
+              *
+              * **Note:** This function only supports comparing values with tags of
+              * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
+              *
+              * @private
+              * @param {Object} object The object to compare.
+              * @param {Object} other The other object to compare.
+              * @param {string} tag The `toStringTag` of the objects to compare.
+              * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+              * @param {Function} customizer The function to customize comparisons.
+              * @param {Function} equalFunc The function to determine equivalents of values.
+              * @param {Object} stack Tracks traversed `object` and `other` objects.
+              * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
+              */
+
+
+             function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
+               switch (tag) {
+                 case dataViewTag:
+                   if (object.byteLength != other.byteLength || object.byteOffset != other.byteOffset) {
+                     return false;
+                   }
+
+                   object = object.buffer;
+                   other = other.buffer;
+
+                 case arrayBufferTag:
+                   if (object.byteLength != other.byteLength || !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
+                     return false;
+                   }
+
+                   return true;
+
+                 case boolTag:
+                 case dateTag:
+                 case numberTag:
+                   // Coerce booleans to `1` or `0` and dates to milliseconds.
+                   // Invalid dates are coerced to `NaN`.
+                   return eq(+object, +other);
+
+                 case errorTag:
+                   return object.name == other.name && object.message == other.message;
+
+                 case regexpTag:
+                 case stringTag:
+                   // Coerce regexes to strings and treat strings, primitives and objects,
+                   // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
+                   // for more details.
+                   return object == other + '';
+
+                 case mapTag:
+                   var convert = mapToArray;
+
+                 case setTag:
+                   var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
+                   convert || (convert = setToArray);
+
+                   if (object.size != other.size && !isPartial) {
+                     return false;
+                   } // Assume cyclic values are equal.
+
+
+                   var stacked = stack.get(object);
+
+                   if (stacked) {
+                     return stacked == other;
+                   }
+
+                   bitmask |= COMPARE_UNORDERED_FLAG; // Recursively compare objects (susceptible to call stack limits).
+
+                   stack.set(object, other);
+                   var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
+                   stack['delete'](object);
+                   return result;
+
+                 case symbolTag:
+                   if (symbolValueOf) {
+                     return symbolValueOf.call(object) == symbolValueOf.call(other);
+                   }
+
+               }
+
+               return false;
+             }
+             /**
+              * A specialized version of `baseIsEqualDeep` for objects with support for
+              * partial deep comparisons.
+              *
+              * @private
+              * @param {Object} object The object to compare.
+              * @param {Object} other The other object to compare.
+              * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
+              * @param {Function} customizer The function to customize comparisons.
+              * @param {Function} equalFunc The function to determine equivalents of values.
+              * @param {Object} stack Tracks traversed `object` and `other` objects.
+              * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
+              */
+
+
+             function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
+               var isPartial = bitmask & COMPARE_PARTIAL_FLAG,
+                   objProps = getAllKeys(object),
+                   objLength = objProps.length,
+                   othProps = getAllKeys(other),
+                   othLength = othProps.length;
+
+               if (objLength != othLength && !isPartial) {
+                 return false;
+               }
+
+               var index = objLength;
+
+               while (index--) {
+                 var key = objProps[index];
+
+                 if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {
+                   return false;
+                 }
+               } // Check that cyclic values are equal.
+
+
+               var objStacked = stack.get(object);
+               var othStacked = stack.get(other);
+
+               if (objStacked && othStacked) {
+                 return objStacked == other && othStacked == object;
+               }
+
+               var result = true;
+               stack.set(object, other);
+               stack.set(other, object);
+               var skipCtor = isPartial;
+
+               while (++index < objLength) {
+                 key = objProps[index];
+                 var objValue = object[key],
+                     othValue = other[key];
+
+                 if (customizer) {
+                   var compared = isPartial ? customizer(othValue, objValue, key, other, object, stack) : customizer(objValue, othValue, key, object, other, stack);
+                 } // Recursively compare objects (susceptible to call stack limits).
+
+
+                 if (!(compared === undefined$1 ? objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack) : compared)) {
+                   result = false;
+                   break;
+                 }
+
+                 skipCtor || (skipCtor = key == 'constructor');
+               }
+
+               if (result && !skipCtor) {
+                 var objCtor = object.constructor,
+                     othCtor = other.constructor; // Non `Object` object instances with different constructors are not equal.
+
+                 if (objCtor != othCtor && 'constructor' in object && 'constructor' in other && !(typeof objCtor == 'function' && objCtor instanceof objCtor && typeof othCtor == 'function' && othCtor instanceof othCtor)) {
+                   result = false;
+                 }
+               }
+
+               stack['delete'](object);
+               stack['delete'](other);
+               return result;
+             }
+             /**
+              * A specialized version of `baseRest` which flattens the rest array.
+              *
+              * @private
+              * @param {Function} func The function to apply a rest parameter to.
+              * @returns {Function} Returns the new function.
+              */
+
+
+             function flatRest(func) {
+               return setToString(overRest(func, undefined$1, flatten), func + '');
+             }
+             /**
+              * Creates an array of own enumerable property names and symbols of `object`.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of property names and symbols.
+              */
+
+
+             function getAllKeys(object) {
+               return baseGetAllKeys(object, keys, getSymbols);
+             }
+             /**
+              * Creates an array of own and inherited enumerable property names and
+              * symbols of `object`.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of property names and symbols.
+              */
+
+
+             function getAllKeysIn(object) {
+               return baseGetAllKeys(object, keysIn, getSymbolsIn);
+             }
+             /**
+              * Gets metadata for `func`.
+              *
+              * @private
+              * @param {Function} func The function to query.
+              * @returns {*} Returns the metadata for `func`.
+              */
+
+
+             var getData = !metaMap ? noop : function (func) {
+               return metaMap.get(func);
+             };
+             /**
+              * Gets the name of `func`.
+              *
+              * @private
+              * @param {Function} func The function to query.
+              * @returns {string} Returns the function name.
+              */
+
+             function getFuncName(func) {
+               var result = func.name + '',
+                   array = realNames[result],
+                   length = hasOwnProperty.call(realNames, result) ? array.length : 0;
+
+               while (length--) {
+                 var data = array[length],
+                     otherFunc = data.func;
+
+                 if (otherFunc == null || otherFunc == func) {
+                   return data.name;
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * Gets the argument placeholder value for `func`.
+              *
+              * @private
+              * @param {Function} func The function to inspect.
+              * @returns {*} Returns the placeholder value.
+              */
+
+
+             function getHolder(func) {
+               var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;
+               return object.placeholder;
+             }
+             /**
+              * Gets the appropriate "iteratee" function. If `_.iteratee` is customized,
+              * this function returns the custom method, otherwise it returns `baseIteratee`.
+              * If arguments are provided, the chosen function is invoked with them and
+              * its result is returned.
+              *
+              * @private
+              * @param {*} [value] The value to convert to an iteratee.
+              * @param {number} [arity] The arity of the created iteratee.
+              * @returns {Function} Returns the chosen function or its result.
+              */
+
+
+             function getIteratee() {
+               var result = lodash.iteratee || iteratee;
+               result = result === iteratee ? baseIteratee : result;
+               return arguments.length ? result(arguments[0], arguments[1]) : result;
+             }
+             /**
+              * Gets the data for `map`.
+              *
+              * @private
+              * @param {Object} map The map to query.
+              * @param {string} key The reference key.
+              * @returns {*} Returns the map data.
+              */
+
+
+             function getMapData(map, key) {
+               var data = map.__data__;
+               return isKeyable(key) ? data[typeof key == 'string' ? 'string' : 'hash'] : data.map;
+             }
+             /**
+              * Gets the property names, values, and compare flags of `object`.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the match data of `object`.
+              */
+
+
+             function getMatchData(object) {
+               var result = keys(object),
+                   length = result.length;
+
+               while (length--) {
+                 var key = result[length],
+                     value = object[key];
+                 result[length] = [key, value, isStrictComparable(value)];
+               }
+
+               return result;
+             }
+             /**
+              * Gets the native function at `key` of `object`.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @param {string} key The key of the method to get.
+              * @returns {*} Returns the function if it's native, else `undefined`.
+              */
+
+
+             function getNative(object, key) {
+               var value = getValue(object, key);
+               return baseIsNative(value) ? value : undefined$1;
+             }
+             /**
+              * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
+              *
+              * @private
+              * @param {*} value The value to query.
+              * @returns {string} Returns the raw `toStringTag`.
+              */
+
+
+             function getRawTag(value) {
+               var isOwn = hasOwnProperty.call(value, symToStringTag),
+                   tag = value[symToStringTag];
+
+               try {
+                 value[symToStringTag] = undefined$1;
+                 var unmasked = true;
+               } catch (e) {}
+
+               var result = nativeObjectToString.call(value);
+
+               if (unmasked) {
+                 if (isOwn) {
+                   value[symToStringTag] = tag;
+                 } else {
+                   delete value[symToStringTag];
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * Creates an array of the own enumerable symbols of `object`.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of symbols.
+              */
+
+
+             var getSymbols = !nativeGetSymbols ? stubArray : function (object) {
+               if (object == null) {
+                 return [];
+               }
+
+               object = Object(object);
+               return arrayFilter(nativeGetSymbols(object), function (symbol) {
+                 return propertyIsEnumerable.call(object, symbol);
+               });
+             };
+             /**
+              * Creates an array of the own and inherited enumerable symbols of `object`.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of symbols.
+              */
+
+             var getSymbolsIn = !nativeGetSymbols ? stubArray : function (object) {
+               var result = [];
+
+               while (object) {
+                 arrayPush(result, getSymbols(object));
+                 object = getPrototype(object);
+               }
+
+               return result;
+             };
+             /**
+              * Gets the `toStringTag` of `value`.
+              *
+              * @private
+              * @param {*} value The value to query.
+              * @returns {string} Returns the `toStringTag`.
+              */
+
+             var getTag = baseGetTag; // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
+
+             if (DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag || Map && getTag(new Map()) != mapTag || Promise && getTag(Promise.resolve()) != promiseTag || Set && getTag(new Set()) != setTag || WeakMap && getTag(new WeakMap()) != weakMapTag) {
+               getTag = function getTag(value) {
+                 var result = baseGetTag(value),
+                     Ctor = result == objectTag ? value.constructor : undefined$1,
+                     ctorString = Ctor ? toSource(Ctor) : '';
+
+                 if (ctorString) {
+                   switch (ctorString) {
+                     case dataViewCtorString:
+                       return dataViewTag;
+
+                     case mapCtorString:
+                       return mapTag;
+
+                     case promiseCtorString:
+                       return promiseTag;
+
+                     case setCtorString:
+                       return setTag;
+
+                     case weakMapCtorString:
+                       return weakMapTag;
+                   }
+                 }
+
+                 return result;
+               };
+             }
+             /**
+              * Gets the view, applying any `transforms` to the `start` and `end` positions.
+              *
+              * @private
+              * @param {number} start The start of the view.
+              * @param {number} end The end of the view.
+              * @param {Array} transforms The transformations to apply to the view.
+              * @returns {Object} Returns an object containing the `start` and `end`
+              *  positions of the view.
+              */
+
+
+             function getView(start, end, transforms) {
+               var index = -1,
+                   length = transforms.length;
+
+               while (++index < length) {
+                 var data = transforms[index],
+                     size = data.size;
+
+                 switch (data.type) {
+                   case 'drop':
+                     start += size;
+                     break;
+
+                   case 'dropRight':
+                     end -= size;
+                     break;
+
+                   case 'take':
+                     end = nativeMin(end, start + size);
+                     break;
+
+                   case 'takeRight':
+                     start = nativeMax(start, end - size);
+                     break;
+                 }
+               }
+
+               return {
+                 'start': start,
+                 'end': end
+               };
+             }
+             /**
+              * Extracts wrapper details from the `source` body comment.
+              *
+              * @private
+              * @param {string} source The source to inspect.
+              * @returns {Array} Returns the wrapper details.
+              */
+
+
+             function getWrapDetails(source) {
+               var match = source.match(reWrapDetails);
+               return match ? match[1].split(reSplitDetails) : [];
+             }
+             /**
+              * Checks if `path` exists on `object`.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @param {Array|string} path The path to check.
+              * @param {Function} hasFunc The function to check properties.
+              * @returns {boolean} Returns `true` if `path` exists, else `false`.
+              */
+
+
+             function hasPath(object, path, hasFunc) {
+               path = castPath(path, object);
+               var index = -1,
+                   length = path.length,
+                   result = false;
+
+               while (++index < length) {
+                 var key = toKey(path[index]);
+
+                 if (!(result = object != null && hasFunc(object, key))) {
+                   break;
+                 }
+
+                 object = object[key];
+               }
+
+               if (result || ++index != length) {
+                 return result;
+               }
+
+               length = object == null ? 0 : object.length;
+               return !!length && isLength(length) && isIndex(key, length) && (isArray(object) || isArguments(object));
+             }
+             /**
+              * Initializes an array clone.
+              *
+              * @private
+              * @param {Array} array The array to clone.
+              * @returns {Array} Returns the initialized clone.
+              */
+
+
+             function initCloneArray(array) {
+               var length = array.length,
+                   result = new array.constructor(length); // Add properties assigned by `RegExp#exec`.
+
+               if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
+                 result.index = array.index;
+                 result.input = array.input;
+               }
+
+               return result;
+             }
+             /**
+              * Initializes an object clone.
+              *
+              * @private
+              * @param {Object} object The object to clone.
+              * @returns {Object} Returns the initialized clone.
+              */
+
+
+             function initCloneObject(object) {
+               return typeof object.constructor == 'function' && !isPrototype(object) ? baseCreate(getPrototype(object)) : {};
+             }
+             /**
+              * Initializes an object clone based on its `toStringTag`.
+              *
+              * **Note:** This function only supports cloning values with tags of
+              * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.
+              *
+              * @private
+              * @param {Object} object The object to clone.
+              * @param {string} tag The `toStringTag` of the object to clone.
+              * @param {boolean} [isDeep] Specify a deep clone.
+              * @returns {Object} Returns the initialized clone.
+              */
+
+
+             function initCloneByTag(object, tag, isDeep) {
+               var Ctor = object.constructor;
+
+               switch (tag) {
+                 case arrayBufferTag:
+                   return cloneArrayBuffer(object);
+
+                 case boolTag:
+                 case dateTag:
+                   return new Ctor(+object);
+
+                 case dataViewTag:
+                   return cloneDataView(object, isDeep);
+
+                 case float32Tag:
+                 case float64Tag:
+                 case int8Tag:
+                 case int16Tag:
+                 case int32Tag:
+                 case uint8Tag:
+                 case uint8ClampedTag:
+                 case uint16Tag:
+                 case uint32Tag:
+                   return cloneTypedArray(object, isDeep);
+
+                 case mapTag:
+                   return new Ctor();
+
+                 case numberTag:
+                 case stringTag:
+                   return new Ctor(object);
+
+                 case regexpTag:
+                   return cloneRegExp(object);
+
+                 case setTag:
+                   return new Ctor();
+
+                 case symbolTag:
+                   return cloneSymbol(object);
+               }
+             }
+             /**
+              * Inserts wrapper `details` in a comment at the top of the `source` body.
+              *
+              * @private
+              * @param {string} source The source to modify.
+              * @returns {Array} details The details to insert.
+              * @returns {string} Returns the modified source.
+              */
+
+
+             function insertWrapDetails(source, details) {
+               var length = details.length;
+
+               if (!length) {
+                 return source;
+               }
+
+               var lastIndex = length - 1;
+               details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
+               details = details.join(length > 2 ? ', ' : ' ');
+               return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
+             }
+             /**
+              * Checks if `value` is a flattenable `arguments` object or array.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
+              */
+
+
+             function isFlattenable(value) {
+               return isArray(value) || isArguments(value) || !!(spreadableSymbol && value && value[spreadableSymbol]);
+             }
+             /**
+              * Checks if `value` is a valid array-like index.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
+              * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
+              */
+
+
+             function isIndex(value, length) {
+               var type = _typeof(value);
+
+               length = length == null ? MAX_SAFE_INTEGER : length;
+               return !!length && (type == 'number' || type != 'symbol' && reIsUint.test(value)) && value > -1 && value % 1 == 0 && value < length;
+             }
+             /**
+              * Checks if the given arguments are from an iteratee call.
+              *
+              * @private
+              * @param {*} value The potential iteratee value argument.
+              * @param {*} index The potential iteratee index or key argument.
+              * @param {*} object The potential iteratee object argument.
+              * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
+              *  else `false`.
+              */
+
+
+             function isIterateeCall(value, index, object) {
+               if (!isObject(object)) {
+                 return false;
+               }
+
+               var type = _typeof(index);
+
+               if (type == 'number' ? isArrayLike(object) && isIndex(index, object.length) : type == 'string' && index in object) {
+                 return eq(object[index], value);
+               }
+
+               return false;
+             }
+             /**
+              * Checks if `value` is a property name and not a property path.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @param {Object} [object] The object to query keys on.
+              * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
+              */
+
+
+             function isKey(value, object) {
+               if (isArray(value)) {
+                 return false;
+               }
+
+               var type = _typeof(value);
+
+               if (type == 'number' || type == 'symbol' || type == 'boolean' || value == null || isSymbol(value)) {
+                 return true;
+               }
+
+               return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || object != null && value in Object(object);
+             }
+             /**
+              * Checks if `value` is suitable for use as unique object key.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
+              */
+
+
+             function isKeyable(value) {
+               var type = _typeof(value);
+
+               return type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean' ? value !== '__proto__' : value === null;
+             }
+             /**
+              * Checks if `func` has a lazy counterpart.
+              *
+              * @private
+              * @param {Function} func The function to check.
+              * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
+              *  else `false`.
+              */
+
+
+             function isLaziable(func) {
+               var funcName = getFuncName(func),
+                   other = lodash[funcName];
+
+               if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
+                 return false;
+               }
+
+               if (func === other) {
+                 return true;
+               }
+
+               var data = getData(other);
+               return !!data && func === data[0];
+             }
+             /**
+              * Checks if `func` has its source masked.
+              *
+              * @private
+              * @param {Function} func The function to check.
+              * @returns {boolean} Returns `true` if `func` is masked, else `false`.
+              */
+
+
+             function isMasked(func) {
+               return !!maskSrcKey && maskSrcKey in func;
+             }
+             /**
+              * Checks if `func` is capable of being masked.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
+              */
+
+
+             var isMaskable = coreJsData ? isFunction : stubFalse;
+             /**
+              * Checks if `value` is likely a prototype object.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
+              */
+
+             function isPrototype(value) {
+               var Ctor = value && value.constructor,
+                   proto = typeof Ctor == 'function' && Ctor.prototype || objectProto;
+               return value === proto;
+             }
+             /**
+              * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
+              *
+              * @private
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` if suitable for strict
+              *  equality comparisons, else `false`.
+              */
+
+
+             function isStrictComparable(value) {
+               return value === value && !isObject(value);
+             }
+             /**
+              * A specialized version of `matchesProperty` for source values suitable
+              * for strict equality comparisons, i.e. `===`.
+              *
+              * @private
+              * @param {string} key The key of the property to get.
+              * @param {*} srcValue The value to match.
+              * @returns {Function} Returns the new spec function.
+              */
+
+
+             function matchesStrictComparable(key, srcValue) {
+               return function (object) {
+                 if (object == null) {
+                   return false;
+                 }
+
+                 return object[key] === srcValue && (srcValue !== undefined$1 || key in Object(object));
+               };
+             }
+             /**
+              * A specialized version of `_.memoize` which clears the memoized function's
+              * cache when it exceeds `MAX_MEMOIZE_SIZE`.
+              *
+              * @private
+              * @param {Function} func The function to have its output memoized.
+              * @returns {Function} Returns the new memoized function.
+              */
+
+
+             function memoizeCapped(func) {
+               var result = memoize(func, function (key) {
+                 if (cache.size === MAX_MEMOIZE_SIZE) {
+                   cache.clear();
+                 }
+
+                 return key;
+               });
+               var cache = result.cache;
+               return result;
+             }
+             /**
+              * Merges the function metadata of `source` into `data`.
+              *
+              * Merging metadata reduces the number of wrappers used to invoke a function.
+              * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
+              * may be applied regardless of execution order. Methods like `_.ary` and
+              * `_.rearg` modify function arguments, making the order in which they are
+              * executed important, preventing the merging of metadata. However, we make
+              * an exception for a safe combined case where curried functions have `_.ary`
+              * and or `_.rearg` applied.
+              *
+              * @private
+              * @param {Array} data The destination metadata.
+              * @param {Array} source The source metadata.
+              * @returns {Array} Returns `data`.
+              */
+
+
+             function mergeData(data, source) {
+               var bitmask = data[1],
+                   srcBitmask = source[1],
+                   newBitmask = bitmask | srcBitmask,
+                   isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);
+               var isCombo = srcBitmask == WRAP_ARY_FLAG && bitmask == WRAP_CURRY_FLAG || srcBitmask == WRAP_ARY_FLAG && bitmask == WRAP_REARG_FLAG && data[7].length <= source[8] || srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG) && source[7].length <= source[8] && bitmask == WRAP_CURRY_FLAG; // Exit early if metadata can't be merged.
+
+               if (!(isCommon || isCombo)) {
+                 return data;
+               } // Use source `thisArg` if available.
+
+
+               if (srcBitmask & WRAP_BIND_FLAG) {
+                 data[2] = source[2]; // Set when currying a bound function.
+
+                 newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;
+               } // Compose partial arguments.
+
+
+               var value = source[3];
+
+               if (value) {
+                 var partials = data[3];
+                 data[3] = partials ? composeArgs(partials, value, source[4]) : value;
+                 data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];
+               } // Compose partial right arguments.
+
+
+               value = source[5];
+
+               if (value) {
+                 partials = data[5];
+                 data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
+                 data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];
+               } // Use source `argPos` if available.
+
+
+               value = source[7];
+
+               if (value) {
+                 data[7] = value;
+               } // Use source `ary` if it's smaller.
+
+
+               if (srcBitmask & WRAP_ARY_FLAG) {
+                 data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
+               } // Use source `arity` if one is not provided.
+
+
+               if (data[9] == null) {
+                 data[9] = source[9];
+               } // Use source `func` and merge bitmasks.
+
+
+               data[0] = source[0];
+               data[1] = newBitmask;
+               return data;
+             }
+             /**
+              * This function is like
+              * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
+              * except that it includes inherited enumerable properties.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of property names.
+              */
+
+
+             function nativeKeysIn(object) {
+               var result = [];
+
+               if (object != null) {
+                 for (var key in Object(object)) {
+                   result.push(key);
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * Converts `value` to a string using `Object.prototype.toString`.
+              *
+              * @private
+              * @param {*} value The value to convert.
+              * @returns {string} Returns the converted string.
+              */
+
+
+             function objectToString(value) {
+               return nativeObjectToString.call(value);
+             }
+             /**
+              * A specialized version of `baseRest` which transforms the rest array.
+              *
+              * @private
+              * @param {Function} func The function to apply a rest parameter to.
+              * @param {number} [start=func.length-1] The start position of the rest parameter.
+              * @param {Function} transform The rest array transform.
+              * @returns {Function} Returns the new function.
+              */
+
+
+             function overRest(func, start, transform) {
+               start = nativeMax(start === undefined$1 ? func.length - 1 : start, 0);
+               return function () {
+                 var args = arguments,
+                     index = -1,
+                     length = nativeMax(args.length - start, 0),
+                     array = Array(length);
+
+                 while (++index < length) {
+                   array[index] = args[start + index];
+                 }
+
+                 index = -1;
+                 var otherArgs = Array(start + 1);
+
+                 while (++index < start) {
+                   otherArgs[index] = args[index];
+                 }
+
+                 otherArgs[start] = transform(array);
+                 return apply(func, this, otherArgs);
+               };
+             }
+             /**
+              * Gets the parent value at `path` of `object`.
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @param {Array} path The path to get the parent value of.
+              * @returns {*} Returns the parent value.
+              */
+
+
+             function parent(object, path) {
+               return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
+             }
+             /**
+              * Reorder `array` according to the specified indexes where the element at
+              * the first index is assigned as the first element, the element at
+              * the second index is assigned as the second element, and so on.
+              *
+              * @private
+              * @param {Array} array The array to reorder.
+              * @param {Array} indexes The arranged array indexes.
+              * @returns {Array} Returns `array`.
+              */
+
+
+             function reorder(array, indexes) {
+               var arrLength = array.length,
+                   length = nativeMin(indexes.length, arrLength),
+                   oldArray = copyArray(array);
+
+               while (length--) {
+                 var index = indexes[length];
+                 array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined$1;
+               }
+
+               return array;
+             }
+             /**
+              * Gets the value at `key`, unless `key` is "__proto__" or "constructor".
+              *
+              * @private
+              * @param {Object} object The object to query.
+              * @param {string} key The key of the property to get.
+              * @returns {*} Returns the property value.
+              */
+
+
+             function safeGet(object, key) {
+               if (key === 'constructor' && typeof object[key] === 'function') {
+                 return;
+               }
+
+               if (key == '__proto__') {
+                 return;
+               }
+
+               return object[key];
+             }
+             /**
+              * Sets metadata for `func`.
+              *
+              * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
+              * period of time, it will trip its breaker and transition to an identity
+              * function to avoid garbage collection pauses in V8. See
+              * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
+              * for more details.
+              *
+              * @private
+              * @param {Function} func The function to associate metadata with.
+              * @param {*} data The metadata.
+              * @returns {Function} Returns `func`.
+              */
+
+
+             var setData = shortOut(baseSetData);
+             /**
+              * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).
+              *
+              * @private
+              * @param {Function} func The function to delay.
+              * @param {number} wait The number of milliseconds to delay invocation.
+              * @returns {number|Object} Returns the timer id or timeout object.
+              */
+
+             var setTimeout = ctxSetTimeout || function (func, wait) {
+               return root.setTimeout(func, wait);
+             };
+             /**
+              * Sets the `toString` method of `func` to return `string`.
+              *
+              * @private
+              * @param {Function} func The function to modify.
+              * @param {Function} string The `toString` result.
+              * @returns {Function} Returns `func`.
+              */
+
+
+             var setToString = shortOut(baseSetToString);
+             /**
+              * Sets the `toString` method of `wrapper` to mimic the source of `reference`
+              * with wrapper details in a comment at the top of the source body.
+              *
+              * @private
+              * @param {Function} wrapper The function to modify.
+              * @param {Function} reference The reference function.
+              * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
+              * @returns {Function} Returns `wrapper`.
+              */
+
+             function setWrapToString(wrapper, reference, bitmask) {
+               var source = reference + '';
+               return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
+             }
+             /**
+              * Creates a function that'll short out and invoke `identity` instead
+              * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
+              * milliseconds.
+              *
+              * @private
+              * @param {Function} func The function to restrict.
+              * @returns {Function} Returns the new shortable function.
+              */
+
+
+             function shortOut(func) {
+               var count = 0,
+                   lastCalled = 0;
+               return function () {
+                 var stamp = nativeNow(),
+                     remaining = HOT_SPAN - (stamp - lastCalled);
+                 lastCalled = stamp;
+
+                 if (remaining > 0) {
+                   if (++count >= HOT_COUNT) {
+                     return arguments[0];
+                   }
+                 } else {
+                   count = 0;
+                 }
+
+                 return func.apply(undefined$1, arguments);
+               };
+             }
+             /**
+              * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
+              *
+              * @private
+              * @param {Array} array The array to shuffle.
+              * @param {number} [size=array.length] The size of `array`.
+              * @returns {Array} Returns `array`.
+              */
+
+
+             function shuffleSelf(array, size) {
+               var index = -1,
+                   length = array.length,
+                   lastIndex = length - 1;
+               size = size === undefined$1 ? length : size;
+
+               while (++index < size) {
+                 var rand = baseRandom(index, lastIndex),
+                     value = array[rand];
+                 array[rand] = array[index];
+                 array[index] = value;
+               }
+
+               array.length = size;
+               return array;
+             }
+             /**
+              * Converts `string` to a property path array.
+              *
+              * @private
+              * @param {string} string The string to convert.
+              * @returns {Array} Returns the property path array.
+              */
+
+
+             var stringToPath = memoizeCapped(function (string) {
+               var result = [];
+
+               if (string.charCodeAt(0) === 46
+               /* . */
+               ) {
+                 result.push('');
+               }
+
+               string.replace(rePropName, function (match, number, quote, subString) {
+                 result.push(quote ? subString.replace(reEscapeChar, '$1') : number || match);
+               });
+               return result;
+             });
+             /**
+              * Converts `value` to a string key if it's not a string or symbol.
+              *
+              * @private
+              * @param {*} value The value to inspect.
+              * @returns {string|symbol} Returns the key.
+              */
+
+             function toKey(value) {
+               if (typeof value == 'string' || isSymbol(value)) {
+                 return value;
+               }
+
+               var result = value + '';
+               return result == '0' && 1 / value == -INFINITY ? '-0' : result;
+             }
+             /**
+              * Converts `func` to its source code.
+              *
+              * @private
+              * @param {Function} func The function to convert.
+              * @returns {string} Returns the source code.
+              */
+
+
+             function toSource(func) {
+               if (func != null) {
+                 try {
+                   return funcToString.call(func);
+                 } catch (e) {}
+
+                 try {
+                   return func + '';
+                 } catch (e) {}
+               }
+
+               return '';
+             }
+             /**
+              * Updates wrapper `details` based on `bitmask` flags.
+              *
+              * @private
+              * @returns {Array} details The details to modify.
+              * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
+              * @returns {Array} Returns `details`.
+              */
+
+
+             function updateWrapDetails(details, bitmask) {
+               arrayEach(wrapFlags, function (pair) {
+                 var value = '_.' + pair[0];
+
+                 if (bitmask & pair[1] && !arrayIncludes(details, value)) {
+                   details.push(value);
+                 }
+               });
+               return details.sort();
+             }
+             /**
+              * Creates a clone of `wrapper`.
+              *
+              * @private
+              * @param {Object} wrapper The wrapper to clone.
+              * @returns {Object} Returns the cloned wrapper.
+              */
+
+
+             function wrapperClone(wrapper) {
+               if (wrapper instanceof LazyWrapper) {
+                 return wrapper.clone();
+               }
+
+               var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
+               result.__actions__ = copyArray(wrapper.__actions__);
+               result.__index__ = wrapper.__index__;
+               result.__values__ = wrapper.__values__;
+               return result;
+             }
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates an array of elements split into groups the length of `size`.
+              * If `array` can't be split evenly, the final chunk will be the remaining
+              * elements.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to process.
+              * @param {number} [size=1] The length of each chunk
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Array} Returns the new array of chunks.
+              * @example
+              *
+              * _.chunk(['a', 'b', 'c', 'd'], 2);
+              * // => [['a', 'b'], ['c', 'd']]
+              *
+              * _.chunk(['a', 'b', 'c', 'd'], 3);
+              * // => [['a', 'b', 'c'], ['d']]
+              */
+
+
+             function chunk(array, size, guard) {
+               if (guard ? isIterateeCall(array, size, guard) : size === undefined$1) {
+                 size = 1;
+               } else {
+                 size = nativeMax(toInteger(size), 0);
+               }
+
+               var length = array == null ? 0 : array.length;
+
+               if (!length || size < 1) {
+                 return [];
+               }
+
+               var index = 0,
+                   resIndex = 0,
+                   result = Array(nativeCeil(length / size));
+
+               while (index < length) {
+                 result[resIndex++] = baseSlice(array, index, index += size);
+               }
+
+               return result;
+             }
+             /**
+              * Creates an array with all falsey values removed. The values `false`, `null`,
+              * `0`, `""`, `undefined`, and `NaN` are falsey.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to compact.
+              * @returns {Array} Returns the new array of filtered values.
+              * @example
+              *
+              * _.compact([0, 1, false, 2, '', 3]);
+              * // => [1, 2, 3]
+              */
+
+
+             function compact(array) {
+               var index = -1,
+                   length = array == null ? 0 : array.length,
+                   resIndex = 0,
+                   result = [];
+
+               while (++index < length) {
+                 var value = array[index];
+
+                 if (value) {
+                   result[resIndex++] = value;
+                 }
+               }
+
+               return result;
+             }
+             /**
+              * Creates a new array concatenating `array` with any additional arrays
+              * and/or values.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to concatenate.
+              * @param {...*} [values] The values to concatenate.
+              * @returns {Array} Returns the new concatenated array.
+              * @example
+              *
+              * var array = [1];
+              * var other = _.concat(array, 2, [3], [[4]]);
+              *
+              * console.log(other);
+              * // => [1, 2, 3, [4]]
+              *
+              * console.log(array);
+              * // => [1]
+              */
+
+
+             function concat() {
+               var length = arguments.length;
+
+               if (!length) {
+                 return [];
+               }
+
+               var args = Array(length - 1),
+                   array = arguments[0],
+                   index = length;
+
+               while (index--) {
+                 args[index - 1] = arguments[index];
+               }
+
+               return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
+             }
+             /**
+              * Creates an array of `array` values not included in the other given arrays
+              * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * for equality comparisons. The order and references of result values are
+              * determined by the first array.
+              *
+              * **Note:** Unlike `_.pullAll`, this method returns a new array.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {...Array} [values] The values to exclude.
+              * @returns {Array} Returns the new array of filtered values.
+              * @see _.without, _.xor
+              * @example
+              *
+              * _.difference([2, 1], [2, 3]);
+              * // => [1]
+              */
+
+
+             var difference = baseRest(function (array, values) {
+               return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) : [];
+             });
+             /**
+              * This method is like `_.difference` except that it accepts `iteratee` which
+              * is invoked for each element of `array` and `values` to generate the criterion
+              * by which they're compared. The order and references of result values are
+              * determined by the first array. The iteratee is invoked with one argument:
+              * (value).
+              *
+              * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {...Array} [values] The values to exclude.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {Array} Returns the new array of filtered values.
+              * @example
+              *
+              * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
+              * // => [1.2]
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
+              * // => [{ 'x': 2 }]
+              */
+
+             var differenceBy = baseRest(function (array, values) {
+               var iteratee = last(values);
+
+               if (isArrayLikeObject(iteratee)) {
+                 iteratee = undefined$1;
+               }
+
+               return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2)) : [];
+             });
+             /**
+              * This method is like `_.difference` except that it accepts `comparator`
+              * which is invoked to compare elements of `array` to `values`. The order and
+              * references of result values are determined by the first array. The comparator
+              * is invoked with two arguments: (arrVal, othVal).
+              *
+              * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {...Array} [values] The values to exclude.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns the new array of filtered values.
+              * @example
+              *
+              * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
+              *
+              * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
+              * // => [{ 'x': 2, 'y': 1 }]
+              */
+
+             var differenceWith = baseRest(function (array, values) {
+               var comparator = last(values);
+
+               if (isArrayLikeObject(comparator)) {
+                 comparator = undefined$1;
+               }
+
+               return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined$1, comparator) : [];
+             });
+             /**
+              * Creates a slice of `array` with `n` elements dropped from the beginning.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.5.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @param {number} [n=1] The number of elements to drop.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * _.drop([1, 2, 3]);
+              * // => [2, 3]
+              *
+              * _.drop([1, 2, 3], 2);
+              * // => [3]
+              *
+              * _.drop([1, 2, 3], 5);
+              * // => []
+              *
+              * _.drop([1, 2, 3], 0);
+              * // => [1, 2, 3]
+              */
+
+             function drop(array, n, guard) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return [];
+               }
+
+               n = guard || n === undefined$1 ? 1 : toInteger(n);
+               return baseSlice(array, n < 0 ? 0 : n, length);
+             }
+             /**
+              * Creates a slice of `array` with `n` elements dropped from the end.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @param {number} [n=1] The number of elements to drop.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * _.dropRight([1, 2, 3]);
+              * // => [1, 2]
+              *
+              * _.dropRight([1, 2, 3], 2);
+              * // => [1]
+              *
+              * _.dropRight([1, 2, 3], 5);
+              * // => []
+              *
+              * _.dropRight([1, 2, 3], 0);
+              * // => [1, 2, 3]
+              */
+
+
+             function dropRight(array, n, guard) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return [];
+               }
+
+               n = guard || n === undefined$1 ? 1 : toInteger(n);
+               n = length - n;
+               return baseSlice(array, 0, n < 0 ? 0 : n);
+             }
+             /**
+              * Creates a slice of `array` excluding elements dropped from the end.
+              * Elements are dropped until `predicate` returns falsey. The predicate is
+              * invoked with three arguments: (value, index, array).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney',  'active': true },
+              *   { 'user': 'fred',    'active': false },
+              *   { 'user': 'pebbles', 'active': false }
+              * ];
+              *
+              * _.dropRightWhile(users, function(o) { return !o.active; });
+              * // => objects for ['barney']
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
+              * // => objects for ['barney', 'fred']
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.dropRightWhile(users, ['active', false]);
+              * // => objects for ['barney']
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.dropRightWhile(users, 'active');
+              * // => objects for ['barney', 'fred', 'pebbles']
+              */
+
+
+             function dropRightWhile(array, predicate) {
+               return array && array.length ? baseWhile(array, getIteratee(predicate, 3), true, true) : [];
+             }
+             /**
+              * Creates a slice of `array` excluding elements dropped from the beginning.
+              * Elements are dropped until `predicate` returns falsey. The predicate is
+              * invoked with three arguments: (value, index, array).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney',  'active': false },
+              *   { 'user': 'fred',    'active': false },
+              *   { 'user': 'pebbles', 'active': true }
+              * ];
+              *
+              * _.dropWhile(users, function(o) { return !o.active; });
+              * // => objects for ['pebbles']
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.dropWhile(users, { 'user': 'barney', 'active': false });
+              * // => objects for ['fred', 'pebbles']
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.dropWhile(users, ['active', false]);
+              * // => objects for ['pebbles']
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.dropWhile(users, 'active');
+              * // => objects for ['barney', 'fred', 'pebbles']
+              */
+
+
+             function dropWhile(array, predicate) {
+               return array && array.length ? baseWhile(array, getIteratee(predicate, 3), true) : [];
+             }
+             /**
+              * Fills elements of `array` with `value` from `start` up to, but not
+              * including, `end`.
+              *
+              * **Note:** This method mutates `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.2.0
+              * @category Array
+              * @param {Array} array The array to fill.
+              * @param {*} value The value to fill `array` with.
+              * @param {number} [start=0] The start position.
+              * @param {number} [end=array.length] The end position.
+              * @returns {Array} Returns `array`.
+              * @example
+              *
+              * var array = [1, 2, 3];
+              *
+              * _.fill(array, 'a');
+              * console.log(array);
+              * // => ['a', 'a', 'a']
+              *
+              * _.fill(Array(3), 2);
+              * // => [2, 2, 2]
+              *
+              * _.fill([4, 6, 8, 10], '*', 1, 3);
+              * // => [4, '*', '*', 10]
+              */
+
+
+             function fill(array, value, start, end) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return [];
+               }
+
+               if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
+                 start = 0;
+                 end = length;
+               }
+
+               return baseFill(array, value, start, end);
+             }
+             /**
+              * This method is like `_.find` except that it returns the index of the first
+              * element `predicate` returns truthy for instead of the element itself.
+              *
+              * @static
+              * @memberOf _
+              * @since 1.1.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @param {number} [fromIndex=0] The index to search from.
+              * @returns {number} Returns the index of the found element, else `-1`.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney',  'active': false },
+              *   { 'user': 'fred',    'active': false },
+              *   { 'user': 'pebbles', 'active': true }
+              * ];
+              *
+              * _.findIndex(users, function(o) { return o.user == 'barney'; });
+              * // => 0
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.findIndex(users, { 'user': 'fred', 'active': false });
+              * // => 1
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.findIndex(users, ['active', false]);
+              * // => 0
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.findIndex(users, 'active');
+              * // => 2
+              */
+
+
+             function findIndex(array, predicate, fromIndex) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return -1;
+               }
+
+               var index = fromIndex == null ? 0 : toInteger(fromIndex);
+
+               if (index < 0) {
+                 index = nativeMax(length + index, 0);
+               }
+
+               return baseFindIndex(array, getIteratee(predicate, 3), index);
+             }
+             /**
+              * This method is like `_.findIndex` except that it iterates over elements
+              * of `collection` from right to left.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @param {number} [fromIndex=array.length-1] The index to search from.
+              * @returns {number} Returns the index of the found element, else `-1`.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney',  'active': true },
+              *   { 'user': 'fred',    'active': false },
+              *   { 'user': 'pebbles', 'active': false }
+              * ];
+              *
+              * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
+              * // => 2
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.findLastIndex(users, { 'user': 'barney', 'active': true });
+              * // => 0
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.findLastIndex(users, ['active', false]);
+              * // => 2
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.findLastIndex(users, 'active');
+              * // => 0
+              */
+
+
+             function findLastIndex(array, predicate, fromIndex) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return -1;
+               }
+
+               var index = length - 1;
+
+               if (fromIndex !== undefined$1) {
+                 index = toInteger(fromIndex);
+                 index = fromIndex < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
+               }
+
+               return baseFindIndex(array, getIteratee(predicate, 3), index, true);
+             }
+             /**
+              * Flattens `array` a single level deep.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to flatten.
+              * @returns {Array} Returns the new flattened array.
+              * @example
+              *
+              * _.flatten([1, [2, [3, [4]], 5]]);
+              * // => [1, 2, [3, [4]], 5]
+              */
+
+
+             function flatten(array) {
+               var length = array == null ? 0 : array.length;
+               return length ? baseFlatten(array, 1) : [];
+             }
+             /**
+              * Recursively flattens `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to flatten.
+              * @returns {Array} Returns the new flattened array.
+              * @example
+              *
+              * _.flattenDeep([1, [2, [3, [4]], 5]]);
+              * // => [1, 2, 3, 4, 5]
+              */
+
+
+             function flattenDeep(array) {
+               var length = array == null ? 0 : array.length;
+               return length ? baseFlatten(array, INFINITY) : [];
+             }
+             /**
+              * Recursively flatten `array` up to `depth` times.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.4.0
+              * @category Array
+              * @param {Array} array The array to flatten.
+              * @param {number} [depth=1] The maximum recursion depth.
+              * @returns {Array} Returns the new flattened array.
+              * @example
+              *
+              * var array = [1, [2, [3, [4]], 5]];
+              *
+              * _.flattenDepth(array, 1);
+              * // => [1, 2, [3, [4]], 5]
+              *
+              * _.flattenDepth(array, 2);
+              * // => [1, 2, 3, [4], 5]
+              */
+
+
+             function flattenDepth(array, depth) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return [];
+               }
+
+               depth = depth === undefined$1 ? 1 : toInteger(depth);
+               return baseFlatten(array, depth);
+             }
+             /**
+              * The inverse of `_.toPairs`; this method returns an object composed
+              * from key-value `pairs`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} pairs The key-value pairs.
+              * @returns {Object} Returns the new object.
+              * @example
+              *
+              * _.fromPairs([['a', 1], ['b', 2]]);
+              * // => { 'a': 1, 'b': 2 }
+              */
+
+
+             function fromPairs(pairs) {
+               var index = -1,
+                   length = pairs == null ? 0 : pairs.length,
+                   result = {};
+
+               while (++index < length) {
+                 var pair = pairs[index];
+                 result[pair[0]] = pair[1];
+               }
+
+               return result;
+             }
+             /**
+              * Gets the first element of `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @alias first
+              * @category Array
+              * @param {Array} array The array to query.
+              * @returns {*} Returns the first element of `array`.
+              * @example
+              *
+              * _.head([1, 2, 3]);
+              * // => 1
+              *
+              * _.head([]);
+              * // => undefined
+              */
+
+
+             function head(array) {
+               return array && array.length ? array[0] : undefined$1;
+             }
+             /**
+              * Gets the index at which the first occurrence of `value` is found in `array`
+              * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * for equality comparisons. If `fromIndex` is negative, it's used as the
+              * offset from the end of `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {*} value The value to search for.
+              * @param {number} [fromIndex=0] The index to search from.
+              * @returns {number} Returns the index of the matched value, else `-1`.
+              * @example
+              *
+              * _.indexOf([1, 2, 1, 2], 2);
+              * // => 1
+              *
+              * // Search from the `fromIndex`.
+              * _.indexOf([1, 2, 1, 2], 2, 2);
+              * // => 3
+              */
+
+
+             function indexOf(array, value, fromIndex) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return -1;
+               }
+
+               var index = fromIndex == null ? 0 : toInteger(fromIndex);
+
+               if (index < 0) {
+                 index = nativeMax(length + index, 0);
+               }
+
+               return baseIndexOf(array, value, index);
+             }
+             /**
+              * Gets all but the last element of `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * _.initial([1, 2, 3]);
+              * // => [1, 2]
+              */
+
+
+             function initial(array) {
+               var length = array == null ? 0 : array.length;
+               return length ? baseSlice(array, 0, -1) : [];
+             }
+             /**
+              * Creates an array of unique values that are included in all given arrays
+              * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * for equality comparisons. The order and references of result values are
+              * determined by the first array.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to inspect.
+              * @returns {Array} Returns the new array of intersecting values.
+              * @example
+              *
+              * _.intersection([2, 1], [2, 3]);
+              * // => [2]
+              */
+
+
+             var intersection = baseRest(function (arrays) {
+               var mapped = arrayMap(arrays, castArrayLikeObject);
+               return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped) : [];
+             });
+             /**
+              * This method is like `_.intersection` except that it accepts `iteratee`
+              * which is invoked for each element of each `arrays` to generate the criterion
+              * by which they're compared. The order and references of result values are
+              * determined by the first array. The iteratee is invoked with one argument:
+              * (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to inspect.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {Array} Returns the new array of intersecting values.
+              * @example
+              *
+              * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
+              * // => [2.1]
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
+              * // => [{ 'x': 1 }]
+              */
+
+             var intersectionBy = baseRest(function (arrays) {
+               var iteratee = last(arrays),
+                   mapped = arrayMap(arrays, castArrayLikeObject);
+
+               if (iteratee === last(mapped)) {
+                 iteratee = undefined$1;
+               } else {
+                 mapped.pop();
+               }
+
+               return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped, getIteratee(iteratee, 2)) : [];
+             });
+             /**
+              * This method is like `_.intersection` except that it accepts `comparator`
+              * which is invoked to compare elements of `arrays`. The order and references
+              * of result values are determined by the first array. The comparator is
+              * invoked with two arguments: (arrVal, othVal).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to inspect.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns the new array of intersecting values.
+              * @example
+              *
+              * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
+              * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
+              *
+              * _.intersectionWith(objects, others, _.isEqual);
+              * // => [{ 'x': 1, 'y': 2 }]
+              */
+
+             var intersectionWith = baseRest(function (arrays) {
+               var comparator = last(arrays),
+                   mapped = arrayMap(arrays, castArrayLikeObject);
+               comparator = typeof comparator == 'function' ? comparator : undefined$1;
+
+               if (comparator) {
+                 mapped.pop();
+               }
+
+               return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped, undefined$1, comparator) : [];
+             });
+             /**
+              * Converts all elements in `array` into a string separated by `separator`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to convert.
+              * @param {string} [separator=','] The element separator.
+              * @returns {string} Returns the joined string.
+              * @example
+              *
+              * _.join(['a', 'b', 'c'], '~');
+              * // => 'a~b~c'
+              */
+
+             function join(array, separator) {
+               return array == null ? '' : nativeJoin.call(array, separator);
+             }
+             /**
+              * Gets the last element of `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @returns {*} Returns the last element of `array`.
+              * @example
+              *
+              * _.last([1, 2, 3]);
+              * // => 3
+              */
+
+
+             function last(array) {
+               var length = array == null ? 0 : array.length;
+               return length ? array[length - 1] : undefined$1;
+             }
+             /**
+              * This method is like `_.indexOf` except that it iterates over elements of
+              * `array` from right to left.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {*} value The value to search for.
+              * @param {number} [fromIndex=array.length-1] The index to search from.
+              * @returns {number} Returns the index of the matched value, else `-1`.
+              * @example
+              *
+              * _.lastIndexOf([1, 2, 1, 2], 2);
+              * // => 3
+              *
+              * // Search from the `fromIndex`.
+              * _.lastIndexOf([1, 2, 1, 2], 2, 2);
+              * // => 1
+              */
+
+
+             function lastIndexOf(array, value, fromIndex) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return -1;
+               }
+
+               var index = length;
+
+               if (fromIndex !== undefined$1) {
+                 index = toInteger(fromIndex);
+                 index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);
+               }
+
+               return value === value ? strictLastIndexOf(array, value, index) : baseFindIndex(array, baseIsNaN, index, true);
+             }
+             /**
+              * Gets the element at index `n` of `array`. If `n` is negative, the nth
+              * element from the end is returned.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.11.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @param {number} [n=0] The index of the element to return.
+              * @returns {*} Returns the nth element of `array`.
+              * @example
+              *
+              * var array = ['a', 'b', 'c', 'd'];
+              *
+              * _.nth(array, 1);
+              * // => 'b'
+              *
+              * _.nth(array, -2);
+              * // => 'c';
+              */
+
+
+             function nth(array, n) {
+               return array && array.length ? baseNth(array, toInteger(n)) : undefined$1;
+             }
+             /**
+              * Removes all given values from `array` using
+              * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * for equality comparisons.
+              *
+              * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
+              * to remove elements from an array by predicate.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @category Array
+              * @param {Array} array The array to modify.
+              * @param {...*} [values] The values to remove.
+              * @returns {Array} Returns `array`.
+              * @example
+              *
+              * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
+              *
+              * _.pull(array, 'a', 'c');
+              * console.log(array);
+              * // => ['b', 'b']
+              */
+
+
+             var pull = baseRest(pullAll);
+             /**
+              * This method is like `_.pull` except that it accepts an array of values to remove.
+              *
+              * **Note:** Unlike `_.difference`, this method mutates `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to modify.
+              * @param {Array} values The values to remove.
+              * @returns {Array} Returns `array`.
+              * @example
+              *
+              * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
+              *
+              * _.pullAll(array, ['a', 'c']);
+              * console.log(array);
+              * // => ['b', 'b']
+              */
+
+             function pullAll(array, values) {
+               return array && array.length && values && values.length ? basePullAll(array, values) : array;
+             }
+             /**
+              * This method is like `_.pullAll` except that it accepts `iteratee` which is
+              * invoked for each element of `array` and `values` to generate the criterion
+              * by which they're compared. The iteratee is invoked with one argument: (value).
+              *
+              * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to modify.
+              * @param {Array} values The values to remove.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {Array} Returns `array`.
+              * @example
+              *
+              * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
+              *
+              * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
+              * console.log(array);
+              * // => [{ 'x': 2 }]
+              */
+
+
+             function pullAllBy(array, values, iteratee) {
+               return array && array.length && values && values.length ? basePullAll(array, values, getIteratee(iteratee, 2)) : array;
+             }
+             /**
+              * This method is like `_.pullAll` except that it accepts `comparator` which
+              * is invoked to compare elements of `array` to `values`. The comparator is
+              * invoked with two arguments: (arrVal, othVal).
+              *
+              * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.6.0
+              * @category Array
+              * @param {Array} array The array to modify.
+              * @param {Array} values The values to remove.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns `array`.
+              * @example
+              *
+              * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
+              *
+              * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
+              * console.log(array);
+              * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
+              */
+
+
+             function pullAllWith(array, values, comparator) {
+               return array && array.length && values && values.length ? basePullAll(array, values, undefined$1, comparator) : array;
+             }
+             /**
+              * Removes elements from `array` corresponding to `indexes` and returns an
+              * array of removed elements.
+              *
+              * **Note:** Unlike `_.at`, this method mutates `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to modify.
+              * @param {...(number|number[])} [indexes] The indexes of elements to remove.
+              * @returns {Array} Returns the new array of removed elements.
+              * @example
+              *
+              * var array = ['a', 'b', 'c', 'd'];
+              * var pulled = _.pullAt(array, [1, 3]);
+              *
+              * console.log(array);
+              * // => ['a', 'c']
+              *
+              * console.log(pulled);
+              * // => ['b', 'd']
+              */
+
+
+             var pullAt = flatRest(function (array, indexes) {
+               var length = array == null ? 0 : array.length,
+                   result = baseAt(array, indexes);
+               basePullAt(array, arrayMap(indexes, function (index) {
+                 return isIndex(index, length) ? +index : index;
+               }).sort(compareAscending));
+               return result;
+             });
+             /**
+              * Removes all elements from `array` that `predicate` returns truthy for
+              * and returns an array of the removed elements. The predicate is invoked
+              * with three arguments: (value, index, array).
+              *
+              * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
+              * to pull elements from an array by value.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @category Array
+              * @param {Array} array The array to modify.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the new array of removed elements.
+              * @example
+              *
+              * var array = [1, 2, 3, 4];
+              * var evens = _.remove(array, function(n) {
+              *   return n % 2 == 0;
+              * });
+              *
+              * console.log(array);
+              * // => [1, 3]
+              *
+              * console.log(evens);
+              * // => [2, 4]
+              */
+
+             function remove(array, predicate) {
+               var result = [];
+
+               if (!(array && array.length)) {
+                 return result;
+               }
+
+               var index = -1,
+                   indexes = [],
+                   length = array.length;
+               predicate = getIteratee(predicate, 3);
+
+               while (++index < length) {
+                 var value = array[index];
+
+                 if (predicate(value, index, array)) {
+                   result.push(value);
+                   indexes.push(index);
+                 }
+               }
+
+               basePullAt(array, indexes);
+               return result;
+             }
+             /**
+              * Reverses `array` so that the first element becomes the last, the second
+              * element becomes the second to last, and so on.
+              *
+              * **Note:** This method mutates `array` and is based on
+              * [`Array#reverse`](https://mdn.io/Array/reverse).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to modify.
+              * @returns {Array} Returns `array`.
+              * @example
+              *
+              * var array = [1, 2, 3];
+              *
+              * _.reverse(array);
+              * // => [3, 2, 1]
+              *
+              * console.log(array);
+              * // => [3, 2, 1]
+              */
+
+
+             function reverse(array) {
+               return array == null ? array : nativeReverse.call(array);
+             }
+             /**
+              * Creates a slice of `array` from `start` up to, but not including, `end`.
+              *
+              * **Note:** This method is used instead of
+              * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
+              * returned.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to slice.
+              * @param {number} [start=0] The start position.
+              * @param {number} [end=array.length] The end position.
+              * @returns {Array} Returns the slice of `array`.
+              */
+
+
+             function slice(array, start, end) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return [];
+               }
+
+               if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
+                 start = 0;
+                 end = length;
+               } else {
+                 start = start == null ? 0 : toInteger(start);
+                 end = end === undefined$1 ? length : toInteger(end);
+               }
+
+               return baseSlice(array, start, end);
+             }
+             /**
+              * Uses a binary search to determine the lowest index at which `value`
+              * should be inserted into `array` in order to maintain its sort order.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The sorted array to inspect.
+              * @param {*} value The value to evaluate.
+              * @returns {number} Returns the index at which `value` should be inserted
+              *  into `array`.
+              * @example
+              *
+              * _.sortedIndex([30, 50], 40);
+              * // => 1
+              */
+
+
+             function sortedIndex(array, value) {
+               return baseSortedIndex(array, value);
+             }
+             /**
+              * This method is like `_.sortedIndex` except that it accepts `iteratee`
+              * which is invoked for `value` and each element of `array` to compute their
+              * sort ranking. The iteratee is invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The sorted array to inspect.
+              * @param {*} value The value to evaluate.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {number} Returns the index at which `value` should be inserted
+              *  into `array`.
+              * @example
+              *
+              * var objects = [{ 'x': 4 }, { 'x': 5 }];
+              *
+              * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
+              * // => 0
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
+              * // => 0
+              */
+
+
+             function sortedIndexBy(array, value, iteratee) {
+               return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));
+             }
+             /**
+              * This method is like `_.indexOf` except that it performs a binary
+              * search on a sorted `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {*} value The value to search for.
+              * @returns {number} Returns the index of the matched value, else `-1`.
+              * @example
+              *
+              * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
+              * // => 1
+              */
+
+
+             function sortedIndexOf(array, value) {
+               var length = array == null ? 0 : array.length;
+
+               if (length) {
+                 var index = baseSortedIndex(array, value);
+
+                 if (index < length && eq(array[index], value)) {
+                   return index;
+                 }
+               }
+
+               return -1;
+             }
+             /**
+              * This method is like `_.sortedIndex` except that it returns the highest
+              * index at which `value` should be inserted into `array` in order to
+              * maintain its sort order.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The sorted array to inspect.
+              * @param {*} value The value to evaluate.
+              * @returns {number} Returns the index at which `value` should be inserted
+              *  into `array`.
+              * @example
+              *
+              * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
+              * // => 4
+              */
+
+
+             function sortedLastIndex(array, value) {
+               return baseSortedIndex(array, value, true);
+             }
+             /**
+              * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
+              * which is invoked for `value` and each element of `array` to compute their
+              * sort ranking. The iteratee is invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The sorted array to inspect.
+              * @param {*} value The value to evaluate.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {number} Returns the index at which `value` should be inserted
+              *  into `array`.
+              * @example
+              *
+              * var objects = [{ 'x': 4 }, { 'x': 5 }];
+              *
+              * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
+              * // => 1
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
+              * // => 1
+              */
+
+
+             function sortedLastIndexBy(array, value, iteratee) {
+               return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);
+             }
+             /**
+              * This method is like `_.lastIndexOf` except that it performs a binary
+              * search on a sorted `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {*} value The value to search for.
+              * @returns {number} Returns the index of the matched value, else `-1`.
+              * @example
+              *
+              * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
+              * // => 3
+              */
+
+
+             function sortedLastIndexOf(array, value) {
+               var length = array == null ? 0 : array.length;
+
+               if (length) {
+                 var index = baseSortedIndex(array, value, true) - 1;
+
+                 if (eq(array[index], value)) {
+                   return index;
+                 }
+               }
+
+               return -1;
+             }
+             /**
+              * This method is like `_.uniq` except that it's designed and optimized
+              * for sorted arrays.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @returns {Array} Returns the new duplicate free array.
+              * @example
+              *
+              * _.sortedUniq([1, 1, 2]);
+              * // => [1, 2]
+              */
+
+
+             function sortedUniq(array) {
+               return array && array.length ? baseSortedUniq(array) : [];
+             }
+             /**
+              * This method is like `_.uniqBy` except that it's designed and optimized
+              * for sorted arrays.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {Function} [iteratee] The iteratee invoked per element.
+              * @returns {Array} Returns the new duplicate free array.
+              * @example
+              *
+              * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
+              * // => [1.1, 2.3]
+              */
+
+
+             function sortedUniqBy(array, iteratee) {
+               return array && array.length ? baseSortedUniq(array, getIteratee(iteratee, 2)) : [];
+             }
+             /**
+              * Gets all but the first element of `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * _.tail([1, 2, 3]);
+              * // => [2, 3]
+              */
+
+
+             function tail(array) {
+               var length = array == null ? 0 : array.length;
+               return length ? baseSlice(array, 1, length) : [];
+             }
+             /**
+              * Creates a slice of `array` with `n` elements taken from the beginning.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @param {number} [n=1] The number of elements to take.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * _.take([1, 2, 3]);
+              * // => [1]
+              *
+              * _.take([1, 2, 3], 2);
+              * // => [1, 2]
+              *
+              * _.take([1, 2, 3], 5);
+              * // => [1, 2, 3]
+              *
+              * _.take([1, 2, 3], 0);
+              * // => []
+              */
+
+
+             function take(array, n, guard) {
+               if (!(array && array.length)) {
+                 return [];
+               }
+
+               n = guard || n === undefined$1 ? 1 : toInteger(n);
+               return baseSlice(array, 0, n < 0 ? 0 : n);
+             }
+             /**
+              * Creates a slice of `array` with `n` elements taken from the end.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @param {number} [n=1] The number of elements to take.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * _.takeRight([1, 2, 3]);
+              * // => [3]
+              *
+              * _.takeRight([1, 2, 3], 2);
+              * // => [2, 3]
+              *
+              * _.takeRight([1, 2, 3], 5);
+              * // => [1, 2, 3]
+              *
+              * _.takeRight([1, 2, 3], 0);
+              * // => []
+              */
+
+
+             function takeRight(array, n, guard) {
+               var length = array == null ? 0 : array.length;
+
+               if (!length) {
+                 return [];
+               }
+
+               n = guard || n === undefined$1 ? 1 : toInteger(n);
+               n = length - n;
+               return baseSlice(array, n < 0 ? 0 : n, length);
+             }
+             /**
+              * Creates a slice of `array` with elements taken from the end. Elements are
+              * taken until `predicate` returns falsey. The predicate is invoked with
+              * three arguments: (value, index, array).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney',  'active': true },
+              *   { 'user': 'fred',    'active': false },
+              *   { 'user': 'pebbles', 'active': false }
+              * ];
+              *
+              * _.takeRightWhile(users, function(o) { return !o.active; });
+              * // => objects for ['fred', 'pebbles']
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
+              * // => objects for ['pebbles']
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.takeRightWhile(users, ['active', false]);
+              * // => objects for ['fred', 'pebbles']
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.takeRightWhile(users, 'active');
+              * // => []
+              */
+
+
+             function takeRightWhile(array, predicate) {
+               return array && array.length ? baseWhile(array, getIteratee(predicate, 3), false, true) : [];
+             }
+             /**
+              * Creates a slice of `array` with elements taken from the beginning. Elements
+              * are taken until `predicate` returns falsey. The predicate is invoked with
+              * three arguments: (value, index, array).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Array
+              * @param {Array} array The array to query.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the slice of `array`.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney',  'active': false },
+              *   { 'user': 'fred',    'active': false },
+              *   { 'user': 'pebbles', 'active': true }
+              * ];
+              *
+              * _.takeWhile(users, function(o) { return !o.active; });
+              * // => objects for ['barney', 'fred']
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.takeWhile(users, { 'user': 'barney', 'active': false });
+              * // => objects for ['barney']
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.takeWhile(users, ['active', false]);
+              * // => objects for ['barney', 'fred']
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.takeWhile(users, 'active');
+              * // => []
+              */
+
+
+             function takeWhile(array, predicate) {
+               return array && array.length ? baseWhile(array, getIteratee(predicate, 3)) : [];
+             }
+             /**
+              * Creates an array of unique values, in order, from all given arrays using
+              * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * for equality comparisons.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to inspect.
+              * @returns {Array} Returns the new array of combined values.
+              * @example
+              *
+              * _.union([2], [1, 2]);
+              * // => [2, 1]
+              */
+
+
+             var union = baseRest(function (arrays) {
+               return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
+             });
+             /**
+              * This method is like `_.union` except that it accepts `iteratee` which is
+              * invoked for each element of each `arrays` to generate the criterion by
+              * which uniqueness is computed. Result values are chosen from the first
+              * array in which the value occurs. The iteratee is invoked with one argument:
+              * (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to inspect.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {Array} Returns the new array of combined values.
+              * @example
+              *
+              * _.unionBy([2.1], [1.2, 2.3], Math.floor);
+              * // => [2.1, 1.2]
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
+              * // => [{ 'x': 1 }, { 'x': 2 }]
+              */
+
+             var unionBy = baseRest(function (arrays) {
+               var iteratee = last(arrays);
+
+               if (isArrayLikeObject(iteratee)) {
+                 iteratee = undefined$1;
+               }
+
+               return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));
+             });
+             /**
+              * This method is like `_.union` except that it accepts `comparator` which
+              * is invoked to compare elements of `arrays`. Result values are chosen from
+              * the first array in which the value occurs. The comparator is invoked
+              * with two arguments: (arrVal, othVal).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to inspect.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns the new array of combined values.
+              * @example
+              *
+              * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
+              * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
+              *
+              * _.unionWith(objects, others, _.isEqual);
+              * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
+              */
+
+             var unionWith = baseRest(function (arrays) {
+               var comparator = last(arrays);
+               comparator = typeof comparator == 'function' ? comparator : undefined$1;
+               return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined$1, comparator);
+             });
+             /**
+              * Creates a duplicate-free version of an array, using
+              * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * for equality comparisons, in which only the first occurrence of each element
+              * is kept. The order of result values is determined by the order they occur
+              * in the array.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @returns {Array} Returns the new duplicate free array.
+              * @example
+              *
+              * _.uniq([2, 1, 2]);
+              * // => [2, 1]
+              */
+
+             function uniq(array) {
+               return array && array.length ? baseUniq(array) : [];
+             }
+             /**
+              * This method is like `_.uniq` except that it accepts `iteratee` which is
+              * invoked for each element in `array` to generate the criterion by which
+              * uniqueness is computed. The order of result values is determined by the
+              * order they occur in the array. The iteratee is invoked with one argument:
+              * (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {Array} Returns the new duplicate free array.
+              * @example
+              *
+              * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
+              * // => [2.1, 1.2]
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
+              * // => [{ 'x': 1 }, { 'x': 2 }]
+              */
+
+
+             function uniqBy(array, iteratee) {
+               return array && array.length ? baseUniq(array, getIteratee(iteratee, 2)) : [];
+             }
+             /**
+              * This method is like `_.uniq` except that it accepts `comparator` which
+              * is invoked to compare elements of `array`. The order of result values is
+              * determined by the order they occur in the array.The comparator is invoked
+              * with two arguments: (arrVal, othVal).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns the new duplicate free array.
+              * @example
+              *
+              * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
+              *
+              * _.uniqWith(objects, _.isEqual);
+              * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
+              */
+
+
+             function uniqWith(array, comparator) {
+               comparator = typeof comparator == 'function' ? comparator : undefined$1;
+               return array && array.length ? baseUniq(array, undefined$1, comparator) : [];
+             }
+             /**
+              * This method is like `_.zip` except that it accepts an array of grouped
+              * elements and creates an array regrouping the elements to their pre-zip
+              * configuration.
+              *
+              * @static
+              * @memberOf _
+              * @since 1.2.0
+              * @category Array
+              * @param {Array} array The array of grouped elements to process.
+              * @returns {Array} Returns the new array of regrouped elements.
+              * @example
+              *
+              * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
+              * // => [['a', 1, true], ['b', 2, false]]
+              *
+              * _.unzip(zipped);
+              * // => [['a', 'b'], [1, 2], [true, false]]
+              */
+
+
+             function unzip(array) {
+               if (!(array && array.length)) {
+                 return [];
+               }
+
+               var length = 0;
+               array = arrayFilter(array, function (group) {
+                 if (isArrayLikeObject(group)) {
+                   length = nativeMax(group.length, length);
+                   return true;
+                 }
+               });
+               return baseTimes(length, function (index) {
+                 return arrayMap(array, baseProperty(index));
+               });
+             }
+             /**
+              * This method is like `_.unzip` except that it accepts `iteratee` to specify
+              * how regrouped values should be combined. The iteratee is invoked with the
+              * elements of each group: (...group).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.8.0
+              * @category Array
+              * @param {Array} array The array of grouped elements to process.
+              * @param {Function} [iteratee=_.identity] The function to combine
+              *  regrouped values.
+              * @returns {Array} Returns the new array of regrouped elements.
+              * @example
+              *
+              * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
+              * // => [[1, 10, 100], [2, 20, 200]]
+              *
+              * _.unzipWith(zipped, _.add);
+              * // => [3, 30, 300]
+              */
+
+
+             function unzipWith(array, iteratee) {
+               if (!(array && array.length)) {
+                 return [];
+               }
+
+               var result = unzip(array);
+
+               if (iteratee == null) {
+                 return result;
+               }
+
+               return arrayMap(result, function (group) {
+                 return apply(iteratee, undefined$1, group);
+               });
+             }
+             /**
+              * Creates an array excluding all given values using
+              * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * for equality comparisons.
+              *
+              * **Note:** Unlike `_.pull`, this method returns a new array.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {Array} array The array to inspect.
+              * @param {...*} [values] The values to exclude.
+              * @returns {Array} Returns the new array of filtered values.
+              * @see _.difference, _.xor
+              * @example
+              *
+              * _.without([2, 1, 2, 3], 1, 2);
+              * // => [3]
+              */
+
+
+             var without = baseRest(function (array, values) {
+               return isArrayLikeObject(array) ? baseDifference(array, values) : [];
+             });
+             /**
+              * Creates an array of unique values that is the
+              * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
+              * of the given arrays. The order of result values is determined by the order
+              * they occur in the arrays.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.4.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to inspect.
+              * @returns {Array} Returns the new array of filtered values.
+              * @see _.difference, _.without
+              * @example
+              *
+              * _.xor([2, 1], [2, 3]);
+              * // => [1, 3]
+              */
+
+             var xor = baseRest(function (arrays) {
+               return baseXor(arrayFilter(arrays, isArrayLikeObject));
+             });
+             /**
+              * This method is like `_.xor` except that it accepts `iteratee` which is
+              * invoked for each element of each `arrays` to generate the criterion by
+              * which by which they're compared. The order of result values is determined
+              * by the order they occur in the arrays. The iteratee is invoked with one
+              * argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to inspect.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {Array} Returns the new array of filtered values.
+              * @example
+              *
+              * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
+              * // => [1.2, 3.4]
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
+              * // => [{ 'x': 2 }]
+              */
+
+             var xorBy = baseRest(function (arrays) {
+               var iteratee = last(arrays);
+
+               if (isArrayLikeObject(iteratee)) {
+                 iteratee = undefined$1;
+               }
+
+               return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));
+             });
+             /**
+              * This method is like `_.xor` except that it accepts `comparator` which is
+              * invoked to compare elements of `arrays`. The order of result values is
+              * determined by the order they occur in the arrays. The comparator is invoked
+              * with two arguments: (arrVal, othVal).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to inspect.
+              * @param {Function} [comparator] The comparator invoked per element.
+              * @returns {Array} Returns the new array of filtered values.
+              * @example
+              *
+              * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
+              * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
+              *
+              * _.xorWith(objects, others, _.isEqual);
+              * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
+              */
+
+             var xorWith = baseRest(function (arrays) {
+               var comparator = last(arrays);
+               comparator = typeof comparator == 'function' ? comparator : undefined$1;
+               return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined$1, comparator);
+             });
+             /**
+              * Creates an array of grouped elements, the first of which contains the
+              * first elements of the given arrays, the second of which contains the
+              * second elements of the given arrays, and so on.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to process.
+              * @returns {Array} Returns the new array of grouped elements.
+              * @example
+              *
+              * _.zip(['a', 'b'], [1, 2], [true, false]);
+              * // => [['a', 1, true], ['b', 2, false]]
+              */
+
+             var zip = baseRest(unzip);
+             /**
+              * This method is like `_.fromPairs` except that it accepts two arrays,
+              * one of property identifiers and one of corresponding values.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.4.0
+              * @category Array
+              * @param {Array} [props=[]] The property identifiers.
+              * @param {Array} [values=[]] The property values.
+              * @returns {Object} Returns the new object.
+              * @example
+              *
+              * _.zipObject(['a', 'b'], [1, 2]);
+              * // => { 'a': 1, 'b': 2 }
+              */
+
+             function zipObject(props, values) {
+               return baseZipObject(props || [], values || [], assignValue);
+             }
+             /**
+              * This method is like `_.zipObject` except that it supports property paths.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.1.0
+              * @category Array
+              * @param {Array} [props=[]] The property identifiers.
+              * @param {Array} [values=[]] The property values.
+              * @returns {Object} Returns the new object.
+              * @example
+              *
+              * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
+              * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
+              */
+
+
+             function zipObjectDeep(props, values) {
+               return baseZipObject(props || [], values || [], baseSet);
+             }
+             /**
+              * This method is like `_.zip` except that it accepts `iteratee` to specify
+              * how grouped values should be combined. The iteratee is invoked with the
+              * elements of each group: (...group).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.8.0
+              * @category Array
+              * @param {...Array} [arrays] The arrays to process.
+              * @param {Function} [iteratee=_.identity] The function to combine
+              *  grouped values.
+              * @returns {Array} Returns the new array of grouped elements.
+              * @example
+              *
+              * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
+              *   return a + b + c;
+              * });
+              * // => [111, 222]
+              */
+
+
+             var zipWith = baseRest(function (arrays) {
+               var length = arrays.length,
+                   iteratee = length > 1 ? arrays[length - 1] : undefined$1;
+               iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined$1;
+               return unzipWith(arrays, iteratee);
+             });
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates a `lodash` wrapper instance that wraps `value` with explicit method
+              * chain sequences enabled. The result of such sequences must be unwrapped
+              * with `_#value`.
+              *
+              * @static
+              * @memberOf _
+              * @since 1.3.0
+              * @category Seq
+              * @param {*} value The value to wrap.
+              * @returns {Object} Returns the new `lodash` wrapper instance.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney',  'age': 36 },
+              *   { 'user': 'fred',    'age': 40 },
+              *   { 'user': 'pebbles', 'age': 1 }
+              * ];
+              *
+              * var youngest = _
+              *   .chain(users)
+              *   .sortBy('age')
+              *   .map(function(o) {
+              *     return o.user + ' is ' + o.age;
+              *   })
+              *   .head()
+              *   .value();
+              * // => 'pebbles is 1'
+              */
+
+             function chain(value) {
+               var result = lodash(value);
+               result.__chain__ = true;
+               return result;
+             }
+             /**
+              * This method invokes `interceptor` and returns `value`. The interceptor
+              * is invoked with one argument; (value). The purpose of this method is to
+              * "tap into" a method chain sequence in order to modify intermediate results.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Seq
+              * @param {*} value The value to provide to `interceptor`.
+              * @param {Function} interceptor The function to invoke.
+              * @returns {*} Returns `value`.
+              * @example
+              *
+              * _([1, 2, 3])
+              *  .tap(function(array) {
+              *    // Mutate input array.
+              *    array.pop();
+              *  })
+              *  .reverse()
+              *  .value();
+              * // => [2, 1]
+              */
+
+
+             function tap(value, interceptor) {
+               interceptor(value);
+               return value;
+             }
+             /**
+              * This method is like `_.tap` except that it returns the result of `interceptor`.
+              * The purpose of this method is to "pass thru" values replacing intermediate
+              * results in a method chain sequence.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Seq
+              * @param {*} value The value to provide to `interceptor`.
+              * @param {Function} interceptor The function to invoke.
+              * @returns {*} Returns the result of `interceptor`.
+              * @example
+              *
+              * _('  abc  ')
+              *  .chain()
+              *  .trim()
+              *  .thru(function(value) {
+              *    return [value];
+              *  })
+              *  .value();
+              * // => ['abc']
+              */
+
+
+             function thru(value, interceptor) {
+               return interceptor(value);
+             }
+             /**
+              * This method is the wrapper version of `_.at`.
+              *
+              * @name at
+              * @memberOf _
+              * @since 1.0.0
+              * @category Seq
+              * @param {...(string|string[])} [paths] The property paths to pick.
+              * @returns {Object} Returns the new `lodash` wrapper instance.
+              * @example
+              *
+              * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
+              *
+              * _(object).at(['a[0].b.c', 'a[1]']).value();
+              * // => [3, 4]
+              */
+
+
+             var wrapperAt = flatRest(function (paths) {
+               var length = paths.length,
+                   start = length ? paths[0] : 0,
+                   value = this.__wrapped__,
+                   interceptor = function interceptor(object) {
+                 return baseAt(object, paths);
+               };
+
+               if (length > 1 || this.__actions__.length || !(value instanceof LazyWrapper) || !isIndex(start)) {
+                 return this.thru(interceptor);
+               }
+
+               value = value.slice(start, +start + (length ? 1 : 0));
+
+               value.__actions__.push({
+                 'func': thru,
+                 'args': [interceptor],
+                 'thisArg': undefined$1
+               });
+
+               return new LodashWrapper(value, this.__chain__).thru(function (array) {
+                 if (length && !array.length) {
+                   array.push(undefined$1);
+                 }
+
+                 return array;
+               });
+             });
+             /**
+              * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
+              *
+              * @name chain
+              * @memberOf _
+              * @since 0.1.0
+              * @category Seq
+              * @returns {Object} Returns the new `lodash` wrapper instance.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney', 'age': 36 },
+              *   { 'user': 'fred',   'age': 40 }
+              * ];
+              *
+              * // A sequence without explicit chaining.
+              * _(users).head();
+              * // => { 'user': 'barney', 'age': 36 }
+              *
+              * // A sequence with explicit chaining.
+              * _(users)
+              *   .chain()
+              *   .head()
+              *   .pick('user')
+              *   .value();
+              * // => { 'user': 'barney' }
+              */
+
+             function wrapperChain() {
+               return chain(this);
+             }
+             /**
+              * Executes the chain sequence and returns the wrapped result.
+              *
+              * @name commit
+              * @memberOf _
+              * @since 3.2.0
+              * @category Seq
+              * @returns {Object} Returns the new `lodash` wrapper instance.
+              * @example
+              *
+              * var array = [1, 2];
+              * var wrapped = _(array).push(3);
+              *
+              * console.log(array);
+              * // => [1, 2]
+              *
+              * wrapped = wrapped.commit();
+              * console.log(array);
+              * // => [1, 2, 3]
+              *
+              * wrapped.last();
+              * // => 3
+              *
+              * console.log(array);
+              * // => [1, 2, 3]
+              */
+
+
+             function wrapperCommit() {
+               return new LodashWrapper(this.value(), this.__chain__);
+             }
+             /**
+              * Gets the next value on a wrapped object following the
+              * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
+              *
+              * @name next
+              * @memberOf _
+              * @since 4.0.0
+              * @category Seq
+              * @returns {Object} Returns the next iterator value.
+              * @example
+              *
+              * var wrapped = _([1, 2]);
+              *
+              * wrapped.next();
+              * // => { 'done': false, 'value': 1 }
+              *
+              * wrapped.next();
+              * // => { 'done': false, 'value': 2 }
+              *
+              * wrapped.next();
+              * // => { 'done': true, 'value': undefined }
+              */
+
+
+             function wrapperNext() {
+               if (this.__values__ === undefined$1) {
+                 this.__values__ = toArray(this.value());
+               }
+
+               var done = this.__index__ >= this.__values__.length,
+                   value = done ? undefined$1 : this.__values__[this.__index__++];
+               return {
+                 'done': done,
+                 'value': value
+               };
+             }
+             /**
+              * Enables the wrapper to be iterable.
+              *
+              * @name Symbol.iterator
+              * @memberOf _
+              * @since 4.0.0
+              * @category Seq
+              * @returns {Object} Returns the wrapper object.
+              * @example
+              *
+              * var wrapped = _([1, 2]);
+              *
+              * wrapped[Symbol.iterator]() === wrapped;
+              * // => true
+              *
+              * Array.from(wrapped);
+              * // => [1, 2]
+              */
+
+
+             function wrapperToIterator() {
+               return this;
+             }
+             /**
+              * Creates a clone of the chain sequence planting `value` as the wrapped value.
+              *
+              * @name plant
+              * @memberOf _
+              * @since 3.2.0
+              * @category Seq
+              * @param {*} value The value to plant.
+              * @returns {Object} Returns the new `lodash` wrapper instance.
+              * @example
+              *
+              * function square(n) {
+              *   return n * n;
+              * }
+              *
+              * var wrapped = _([1, 2]).map(square);
+              * var other = wrapped.plant([3, 4]);
+              *
+              * other.value();
+              * // => [9, 16]
+              *
+              * wrapped.value();
+              * // => [1, 4]
+              */
+
+
+             function wrapperPlant(value) {
+               var result,
+                   parent = this;
+
+               while (parent instanceof baseLodash) {
+                 var clone = wrapperClone(parent);
+                 clone.__index__ = 0;
+                 clone.__values__ = undefined$1;
+
+                 if (result) {
+                   previous.__wrapped__ = clone;
+                 } else {
+                   result = clone;
+                 }
+
+                 var previous = clone;
+                 parent = parent.__wrapped__;
+               }
+
+               previous.__wrapped__ = value;
+               return result;
+             }
+             /**
+              * This method is the wrapper version of `_.reverse`.
+              *
+              * **Note:** This method mutates the wrapped array.
+              *
+              * @name reverse
+              * @memberOf _
+              * @since 0.1.0
+              * @category Seq
+              * @returns {Object} Returns the new `lodash` wrapper instance.
+              * @example
+              *
+              * var array = [1, 2, 3];
+              *
+              * _(array).reverse().value()
+              * // => [3, 2, 1]
+              *
+              * console.log(array);
+              * // => [3, 2, 1]
+              */
+
+
+             function wrapperReverse() {
+               var value = this.__wrapped__;
+
+               if (value instanceof LazyWrapper) {
+                 var wrapped = value;
+
+                 if (this.__actions__.length) {
+                   wrapped = new LazyWrapper(this);
+                 }
+
+                 wrapped = wrapped.reverse();
+
+                 wrapped.__actions__.push({
+                   'func': thru,
+                   'args': [reverse],
+                   'thisArg': undefined$1
+                 });
+
+                 return new LodashWrapper(wrapped, this.__chain__);
+               }
+
+               return this.thru(reverse);
+             }
+             /**
+              * Executes the chain sequence to resolve the unwrapped value.
+              *
+              * @name value
+              * @memberOf _
+              * @since 0.1.0
+              * @alias toJSON, valueOf
+              * @category Seq
+              * @returns {*} Returns the resolved unwrapped value.
+              * @example
+              *
+              * _([1, 2, 3]).value();
+              * // => [1, 2, 3]
+              */
+
+
+             function wrapperValue() {
+               return baseWrapperValue(this.__wrapped__, this.__actions__);
+             }
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Creates an object composed of keys generated from the results of running
+              * each element of `collection` thru `iteratee`. The corresponding value of
+              * each key is the number of times the key was returned by `iteratee`. The
+              * iteratee is invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 0.5.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
+              * @returns {Object} Returns the composed aggregate object.
+              * @example
+              *
+              * _.countBy([6.1, 4.2, 6.3], Math.floor);
+              * // => { '4': 1, '6': 2 }
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.countBy(['one', 'two', 'three'], 'length');
+              * // => { '3': 2, '5': 1 }
+              */
+
+
+             var countBy = createAggregator(function (result, value, key) {
+               if (hasOwnProperty.call(result, key)) {
+                 ++result[key];
+               } else {
+                 baseAssignValue(result, key, 1);
+               }
+             });
+             /**
+              * Checks if `predicate` returns truthy for **all** elements of `collection`.
+              * Iteration is stopped once `predicate` returns falsey. The predicate is
+              * invoked with three arguments: (value, index|key, collection).
+              *
+              * **Note:** This method returns `true` for
+              * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
+              * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
+              * elements of empty collections.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {boolean} Returns `true` if all elements pass the predicate check,
+              *  else `false`.
+              * @example
+              *
+              * _.every([true, 1, null, 'yes'], Boolean);
+              * // => false
+              *
+              * var users = [
+              *   { 'user': 'barney', 'age': 36, 'active': false },
+              *   { 'user': 'fred',   'age': 40, 'active': false }
+              * ];
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.every(users, { 'user': 'barney', 'active': false });
+              * // => false
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.every(users, ['active', false]);
+              * // => true
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.every(users, 'active');
+              * // => false
+              */
+
+             function every(collection, predicate, guard) {
+               var func = isArray(collection) ? arrayEvery : baseEvery;
+
+               if (guard && isIterateeCall(collection, predicate, guard)) {
+                 predicate = undefined$1;
+               }
+
+               return func(collection, getIteratee(predicate, 3));
+             }
+             /**
+              * Iterates over elements of `collection`, returning an array of all elements
+              * `predicate` returns truthy for. The predicate is invoked with three
+              * arguments: (value, index|key, collection).
+              *
+              * **Note:** Unlike `_.remove`, this method returns a new array.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the new filtered array.
+              * @see _.reject
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney', 'age': 36, 'active': true },
+              *   { 'user': 'fred',   'age': 40, 'active': false }
+              * ];
+              *
+              * _.filter(users, function(o) { return !o.active; });
+              * // => objects for ['fred']
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.filter(users, { 'age': 36, 'active': true });
+              * // => objects for ['barney']
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.filter(users, ['active', false]);
+              * // => objects for ['fred']
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.filter(users, 'active');
+              * // => objects for ['barney']
+              *
+              * // Combining several predicates using `_.overEvery` or `_.overSome`.
+              * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));
+              * // => objects for ['fred', 'barney']
+              */
+
+
+             function filter(collection, predicate) {
+               var func = isArray(collection) ? arrayFilter : baseFilter;
+               return func(collection, getIteratee(predicate, 3));
+             }
+             /**
+              * Iterates over elements of `collection`, returning the first element
+              * `predicate` returns truthy for. The predicate is invoked with three
+              * arguments: (value, index|key, collection).
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to inspect.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @param {number} [fromIndex=0] The index to search from.
+              * @returns {*} Returns the matched element, else `undefined`.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney',  'age': 36, 'active': true },
+              *   { 'user': 'fred',    'age': 40, 'active': false },
+              *   { 'user': 'pebbles', 'age': 1,  'active': true }
+              * ];
+              *
+              * _.find(users, function(o) { return o.age < 40; });
+              * // => object for 'barney'
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.find(users, { 'age': 1, 'active': true });
+              * // => object for 'pebbles'
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.find(users, ['active', false]);
+              * // => object for 'fred'
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.find(users, 'active');
+              * // => object for 'barney'
+              */
+
+
+             var find = createFind(findIndex);
+             /**
+              * This method is like `_.find` except that it iterates over elements of
+              * `collection` from right to left.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to inspect.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @param {number} [fromIndex=collection.length-1] The index to search from.
+              * @returns {*} Returns the matched element, else `undefined`.
+              * @example
+              *
+              * _.findLast([1, 2, 3, 4], function(n) {
+              *   return n % 2 == 1;
+              * });
+              * // => 3
+              */
+
+             var findLast = createFind(findLastIndex);
+             /**
+              * Creates a flattened array of values by running each element in `collection`
+              * thru `iteratee` and flattening the mapped results. The iteratee is invoked
+              * with three arguments: (value, index|key, collection).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the new flattened array.
+              * @example
+              *
+              * function duplicate(n) {
+              *   return [n, n];
+              * }
+              *
+              * _.flatMap([1, 2], duplicate);
+              * // => [1, 1, 2, 2]
+              */
+
+             function flatMap(collection, iteratee) {
+               return baseFlatten(map(collection, iteratee), 1);
+             }
+             /**
+              * This method is like `_.flatMap` except that it recursively flattens the
+              * mapped results.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.7.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the new flattened array.
+              * @example
+              *
+              * function duplicate(n) {
+              *   return [[[n, n]]];
+              * }
+              *
+              * _.flatMapDeep([1, 2], duplicate);
+              * // => [1, 1, 2, 2]
+              */
+
+
+             function flatMapDeep(collection, iteratee) {
+               return baseFlatten(map(collection, iteratee), INFINITY);
+             }
+             /**
+              * This method is like `_.flatMap` except that it recursively flattens the
+              * mapped results up to `depth` times.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.7.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @param {number} [depth=1] The maximum recursion depth.
+              * @returns {Array} Returns the new flattened array.
+              * @example
+              *
+              * function duplicate(n) {
+              *   return [[[n, n]]];
+              * }
+              *
+              * _.flatMapDepth([1, 2], duplicate, 2);
+              * // => [[1, 1], [2, 2]]
+              */
+
+
+             function flatMapDepth(collection, iteratee, depth) {
+               depth = depth === undefined$1 ? 1 : toInteger(depth);
+               return baseFlatten(map(collection, iteratee), depth);
+             }
+             /**
+              * Iterates over elements of `collection` and invokes `iteratee` for each element.
+              * The iteratee is invoked with three arguments: (value, index|key, collection).
+              * Iteratee functions may exit iteration early by explicitly returning `false`.
+              *
+              * **Note:** As with other "Collections" methods, objects with a "length"
+              * property are iterated like arrays. To avoid this behavior use `_.forIn`
+              * or `_.forOwn` for object iteration.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @alias each
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Array|Object} Returns `collection`.
+              * @see _.forEachRight
+              * @example
+              *
+              * _.forEach([1, 2], function(value) {
+              *   console.log(value);
+              * });
+              * // => Logs `1` then `2`.
+              *
+              * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
+              *   console.log(key);
+              * });
+              * // => Logs 'a' then 'b' (iteration order is not guaranteed).
+              */
+
+
+             function forEach(collection, iteratee) {
+               var func = isArray(collection) ? arrayEach : baseEach;
+               return func(collection, getIteratee(iteratee, 3));
+             }
+             /**
+              * This method is like `_.forEach` except that it iterates over elements of
+              * `collection` from right to left.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @alias eachRight
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Array|Object} Returns `collection`.
+              * @see _.forEach
+              * @example
+              *
+              * _.forEachRight([1, 2], function(value) {
+              *   console.log(value);
+              * });
+              * // => Logs `2` then `1`.
+              */
+
+
+             function forEachRight(collection, iteratee) {
+               var func = isArray(collection) ? arrayEachRight : baseEachRight;
+               return func(collection, getIteratee(iteratee, 3));
+             }
+             /**
+              * Creates an object composed of keys generated from the results of running
+              * each element of `collection` thru `iteratee`. The order of grouped values
+              * is determined by the order they occur in `collection`. The corresponding
+              * value of each key is an array of elements responsible for generating the
+              * key. The iteratee is invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
+              * @returns {Object} Returns the composed aggregate object.
+              * @example
+              *
+              * _.groupBy([6.1, 4.2, 6.3], Math.floor);
+              * // => { '4': [4.2], '6': [6.1, 6.3] }
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.groupBy(['one', 'two', 'three'], 'length');
+              * // => { '3': ['one', 'two'], '5': ['three'] }
+              */
+
+
+             var groupBy = createAggregator(function (result, value, key) {
+               if (hasOwnProperty.call(result, key)) {
+                 result[key].push(value);
+               } else {
+                 baseAssignValue(result, key, [value]);
+               }
+             });
+             /**
+              * Checks if `value` is in `collection`. If `collection` is a string, it's
+              * checked for a substring of `value`, otherwise
+              * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * is used for equality comparisons. If `fromIndex` is negative, it's used as
+              * the offset from the end of `collection`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object|string} collection The collection to inspect.
+              * @param {*} value The value to search for.
+              * @param {number} [fromIndex=0] The index to search from.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
+              * @returns {boolean} Returns `true` if `value` is found, else `false`.
+              * @example
+              *
+              * _.includes([1, 2, 3], 1);
+              * // => true
+              *
+              * _.includes([1, 2, 3], 1, 2);
+              * // => false
+              *
+              * _.includes({ 'a': 1, 'b': 2 }, 1);
+              * // => true
+              *
+              * _.includes('abcd', 'bc');
+              * // => true
+              */
+
+             function includes(collection, value, fromIndex, guard) {
+               collection = isArrayLike(collection) ? collection : values(collection);
+               fromIndex = fromIndex && !guard ? toInteger(fromIndex) : 0;
+               var length = collection.length;
+
+               if (fromIndex < 0) {
+                 fromIndex = nativeMax(length + fromIndex, 0);
+               }
+
+               return isString(collection) ? fromIndex <= length && collection.indexOf(value, fromIndex) > -1 : !!length && baseIndexOf(collection, value, fromIndex) > -1;
+             }
+             /**
+              * Invokes the method at `path` of each element in `collection`, returning
+              * an array of the results of each invoked method. Any additional arguments
+              * are provided to each invoked method. If `path` is a function, it's invoked
+              * for, and `this` bound to, each element in `collection`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Array|Function|string} path The path of the method to invoke or
+              *  the function invoked per iteration.
+              * @param {...*} [args] The arguments to invoke each method with.
+              * @returns {Array} Returns the array of results.
+              * @example
+              *
+              * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
+              * // => [[1, 5, 7], [1, 2, 3]]
+              *
+              * _.invokeMap([123, 456], String.prototype.split, '');
+              * // => [['1', '2', '3'], ['4', '5', '6']]
+              */
+
+
+             var invokeMap = baseRest(function (collection, path, args) {
+               var index = -1,
+                   isFunc = typeof path == 'function',
+                   result = isArrayLike(collection) ? Array(collection.length) : [];
+               baseEach(collection, function (value) {
+                 result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
+               });
+               return result;
+             });
+             /**
+              * Creates an object composed of keys generated from the results of running
+              * each element of `collection` thru `iteratee`. The corresponding value of
+              * each key is the last element responsible for generating the key. The
+              * iteratee is invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
+              * @returns {Object} Returns the composed aggregate object.
+              * @example
+              *
+              * var array = [
+              *   { 'dir': 'left', 'code': 97 },
+              *   { 'dir': 'right', 'code': 100 }
+              * ];
+              *
+              * _.keyBy(array, function(o) {
+              *   return String.fromCharCode(o.code);
+              * });
+              * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
+              *
+              * _.keyBy(array, 'dir');
+              * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
+              */
+
+             var keyBy = createAggregator(function (result, value, key) {
+               baseAssignValue(result, key, value);
+             });
+             /**
+              * Creates an array of values by running each element in `collection` thru
+              * `iteratee`. The iteratee is invoked with three arguments:
+              * (value, index|key, collection).
+              *
+              * Many lodash methods are guarded to work as iteratees for methods like
+              * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
+              *
+              * The guarded methods are:
+              * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
+              * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
+              * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
+              * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the new mapped array.
+              * @example
+              *
+              * function square(n) {
+              *   return n * n;
+              * }
+              *
+              * _.map([4, 8], square);
+              * // => [16, 64]
+              *
+              * _.map({ 'a': 4, 'b': 8 }, square);
+              * // => [16, 64] (iteration order is not guaranteed)
+              *
+              * var users = [
+              *   { 'user': 'barney' },
+              *   { 'user': 'fred' }
+              * ];
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.map(users, 'user');
+              * // => ['barney', 'fred']
+              */
+
+             function map(collection, iteratee) {
+               var func = isArray(collection) ? arrayMap : baseMap;
+               return func(collection, getIteratee(iteratee, 3));
+             }
+             /**
+              * This method is like `_.sortBy` except that it allows specifying the sort
+              * orders of the iteratees to sort by. If `orders` is unspecified, all values
+              * are sorted in ascending order. Otherwise, specify an order of "desc" for
+              * descending or "asc" for ascending sort order of corresponding values.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
+              *  The iteratees to sort by.
+              * @param {string[]} [orders] The sort orders of `iteratees`.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
+              * @returns {Array} Returns the new sorted array.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'fred',   'age': 48 },
+              *   { 'user': 'barney', 'age': 34 },
+              *   { 'user': 'fred',   'age': 40 },
+              *   { 'user': 'barney', 'age': 36 }
+              * ];
+              *
+              * // Sort by `user` in ascending order and by `age` in descending order.
+              * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
+              * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
+              */
+
+
+             function orderBy(collection, iteratees, orders, guard) {
+               if (collection == null) {
+                 return [];
+               }
+
+               if (!isArray(iteratees)) {
+                 iteratees = iteratees == null ? [] : [iteratees];
+               }
+
+               orders = guard ? undefined$1 : orders;
+
+               if (!isArray(orders)) {
+                 orders = orders == null ? [] : [orders];
+               }
+
+               return baseOrderBy(collection, iteratees, orders);
+             }
+             /**
+              * Creates an array of elements split into two groups, the first of which
+              * contains elements `predicate` returns truthy for, the second of which
+              * contains elements `predicate` returns falsey for. The predicate is
+              * invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the array of grouped elements.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney',  'age': 36, 'active': false },
+              *   { 'user': 'fred',    'age': 40, 'active': true },
+              *   { 'user': 'pebbles', 'age': 1,  'active': false }
+              * ];
+              *
+              * _.partition(users, function(o) { return o.active; });
+              * // => objects for [['fred'], ['barney', 'pebbles']]
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.partition(users, { 'age': 1, 'active': false });
+              * // => objects for [['pebbles'], ['barney', 'fred']]
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.partition(users, ['active', false]);
+              * // => objects for [['barney', 'pebbles'], ['fred']]
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.partition(users, 'active');
+              * // => objects for [['fred'], ['barney', 'pebbles']]
+              */
+
+
+             var partition = createAggregator(function (result, value, key) {
+               result[key ? 0 : 1].push(value);
+             }, function () {
+               return [[], []];
+             });
+             /**
+              * Reduces `collection` to a value which is the accumulated result of running
+              * each element in `collection` thru `iteratee`, where each successive
+              * invocation is supplied the return value of the previous. If `accumulator`
+              * is not given, the first element of `collection` is used as the initial
+              * value. The iteratee is invoked with four arguments:
+              * (accumulator, value, index|key, collection).
+              *
+              * Many lodash methods are guarded to work as iteratees for methods like
+              * `_.reduce`, `_.reduceRight`, and `_.transform`.
+              *
+              * The guarded methods are:
+              * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
+              * and `sortBy`
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @param {*} [accumulator] The initial value.
+              * @returns {*} Returns the accumulated value.
+              * @see _.reduceRight
+              * @example
+              *
+              * _.reduce([1, 2], function(sum, n) {
+              *   return sum + n;
+              * }, 0);
+              * // => 3
+              *
+              * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
+              *   (result[value] || (result[value] = [])).push(key);
+              *   return result;
+              * }, {});
+              * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
+              */
+
+             function reduce(collection, iteratee, accumulator) {
+               var func = isArray(collection) ? arrayReduce : baseReduce,
+                   initAccum = arguments.length < 3;
+               return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);
+             }
+             /**
+              * This method is like `_.reduce` except that it iterates over elements of
+              * `collection` from right to left.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @param {*} [accumulator] The initial value.
+              * @returns {*} Returns the accumulated value.
+              * @see _.reduce
+              * @example
+              *
+              * var array = [[0, 1], [2, 3], [4, 5]];
+              *
+              * _.reduceRight(array, function(flattened, other) {
+              *   return flattened.concat(other);
+              * }, []);
+              * // => [4, 5, 2, 3, 0, 1]
+              */
+
+
+             function reduceRight(collection, iteratee, accumulator) {
+               var func = isArray(collection) ? arrayReduceRight : baseReduce,
+                   initAccum = arguments.length < 3;
+               return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
+             }
+             /**
+              * The opposite of `_.filter`; this method returns the elements of `collection`
+              * that `predicate` does **not** return truthy for.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the new filtered array.
+              * @see _.filter
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney', 'age': 36, 'active': false },
+              *   { 'user': 'fred',   'age': 40, 'active': true }
+              * ];
+              *
+              * _.reject(users, function(o) { return !o.active; });
+              * // => objects for ['fred']
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.reject(users, { 'age': 40, 'active': true });
+              * // => objects for ['barney']
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.reject(users, ['active', false]);
+              * // => objects for ['fred']
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.reject(users, 'active');
+              * // => objects for ['barney']
+              */
+
+
+             function reject(collection, predicate) {
+               var func = isArray(collection) ? arrayFilter : baseFilter;
+               return func(collection, negate(getIteratee(predicate, 3)));
+             }
+             /**
+              * Gets a random element from `collection`.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to sample.
+              * @returns {*} Returns the random element.
+              * @example
+              *
+              * _.sample([1, 2, 3, 4]);
+              * // => 2
+              */
+
+
+             function sample(collection) {
+               var func = isArray(collection) ? arraySample : baseSample;
+               return func(collection);
+             }
+             /**
+              * Gets `n` random elements at unique keys from `collection` up to the
+              * size of `collection`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to sample.
+              * @param {number} [n=1] The number of elements to sample.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Array} Returns the random elements.
+              * @example
+              *
+              * _.sampleSize([1, 2, 3], 2);
+              * // => [3, 1]
+              *
+              * _.sampleSize([1, 2, 3], 4);
+              * // => [2, 3, 1]
+              */
+
+
+             function sampleSize(collection, n, guard) {
+               if (guard ? isIterateeCall(collection, n, guard) : n === undefined$1) {
+                 n = 1;
+               } else {
+                 n = toInteger(n);
+               }
+
+               var func = isArray(collection) ? arraySampleSize : baseSampleSize;
+               return func(collection, n);
+             }
+             /**
+              * Creates an array of shuffled values, using a version of the
+              * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to shuffle.
+              * @returns {Array} Returns the new shuffled array.
+              * @example
+              *
+              * _.shuffle([1, 2, 3, 4]);
+              * // => [4, 1, 3, 2]
+              */
+
+
+             function shuffle(collection) {
+               var func = isArray(collection) ? arrayShuffle : baseShuffle;
+               return func(collection);
+             }
+             /**
+              * Gets the size of `collection` by returning its length for array-like
+              * values or the number of own enumerable string keyed properties for objects.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object|string} collection The collection to inspect.
+              * @returns {number} Returns the collection size.
+              * @example
+              *
+              * _.size([1, 2, 3]);
+              * // => 3
+              *
+              * _.size({ 'a': 1, 'b': 2 });
+              * // => 2
+              *
+              * _.size('pebbles');
+              * // => 7
+              */
+
+
+             function size(collection) {
+               if (collection == null) {
+                 return 0;
+               }
+
+               if (isArrayLike(collection)) {
+                 return isString(collection) ? stringSize(collection) : collection.length;
+               }
+
+               var tag = getTag(collection);
+
+               if (tag == mapTag || tag == setTag) {
+                 return collection.size;
+               }
+
+               return baseKeys(collection).length;
+             }
+             /**
+              * Checks if `predicate` returns truthy for **any** element of `collection`.
+              * Iteration is stopped once `predicate` returns truthy. The predicate is
+              * invoked with three arguments: (value, index|key, collection).
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {boolean} Returns `true` if any element passes the predicate check,
+              *  else `false`.
+              * @example
+              *
+              * _.some([null, 0, 'yes', false], Boolean);
+              * // => true
+              *
+              * var users = [
+              *   { 'user': 'barney', 'active': true },
+              *   { 'user': 'fred',   'active': false }
+              * ];
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.some(users, { 'user': 'barney', 'active': false });
+              * // => false
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.some(users, ['active', false]);
+              * // => true
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.some(users, 'active');
+              * // => true
+              */
+
+
+             function some(collection, predicate, guard) {
+               var func = isArray(collection) ? arraySome : baseSome;
+
+               if (guard && isIterateeCall(collection, predicate, guard)) {
+                 predicate = undefined$1;
+               }
+
+               return func(collection, getIteratee(predicate, 3));
+             }
+             /**
+              * Creates an array of elements, sorted in ascending order by the results of
+              * running each element in a collection thru each iteratee. This method
+              * performs a stable sort, that is, it preserves the original sort order of
+              * equal elements. The iteratees are invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Collection
+              * @param {Array|Object} collection The collection to iterate over.
+              * @param {...(Function|Function[])} [iteratees=[_.identity]]
+              *  The iteratees to sort by.
+              * @returns {Array} Returns the new sorted array.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'fred',   'age': 48 },
+              *   { 'user': 'barney', 'age': 36 },
+              *   { 'user': 'fred',   'age': 30 },
+              *   { 'user': 'barney', 'age': 34 }
+              * ];
+              *
+              * _.sortBy(users, [function(o) { return o.user; }]);
+              * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]
+              *
+              * _.sortBy(users, ['user', 'age']);
+              * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]
+              */
+
+
+             var sortBy = baseRest(function (collection, iteratees) {
+               if (collection == null) {
+                 return [];
+               }
+
+               var length = iteratees.length;
+
+               if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
+                 iteratees = [];
+               } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
+                 iteratees = [iteratees[0]];
+               }
+
+               return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
+             });
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * 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 now = ctxNow || function () {
+               return root.Date.now();
+             };
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * The opposite of `_.before`; this method creates a function that invokes
+              * `func` once it's called `n` or more times.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Function
+              * @param {number} n The number of calls before `func` is invoked.
+              * @param {Function} func The function to restrict.
+              * @returns {Function} Returns the new restricted function.
+              * @example
+              *
+              * var saves = ['profile', 'settings'];
+              *
+              * var done = _.after(saves.length, function() {
+              *   console.log('done saving!');
+              * });
+              *
+              * _.forEach(saves, function(type) {
+              *   asyncSave({ 'type': type, 'complete': done });
+              * });
+              * // => Logs 'done saving!' after the two async saves have completed.
+              */
+
+
+             function after(n, func) {
+               if (typeof func != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               n = toInteger(n);
+               return function () {
+                 if (--n < 1) {
+                   return func.apply(this, arguments);
+                 }
+               };
+             }
+             /**
+              * Creates a function that invokes `func`, with up to `n` arguments,
+              * ignoring any additional arguments.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Function
+              * @param {Function} func The function to cap arguments for.
+              * @param {number} [n=func.length] The arity cap.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Function} Returns the new capped function.
+              * @example
+              *
+              * _.map(['6', '8', '10'], _.ary(parseInt, 1));
+              * // => [6, 8, 10]
+              */
+
+
+             function ary(func, n, guard) {
+               n = guard ? undefined$1 : n;
+               n = func && n == null ? func.length : n;
+               return createWrap(func, WRAP_ARY_FLAG, undefined$1, undefined$1, undefined$1, undefined$1, n);
+             }
+             /**
+              * Creates a function that invokes `func`, with the `this` binding and arguments
+              * of the created function, while it's called less than `n` times. Subsequent
+              * calls to the created function return the result of the last `func` invocation.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Function
+              * @param {number} n The number of calls at which `func` is no longer invoked.
+              * @param {Function} func The function to restrict.
+              * @returns {Function} Returns the new restricted function.
+              * @example
+              *
+              * jQuery(element).on('click', _.before(5, addContactToList));
+              * // => Allows adding up to 4 contacts to the list.
+              */
+
+
+             function before(n, func) {
+               var result;
+
+               if (typeof func != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               n = toInteger(n);
+               return function () {
+                 if (--n > 0) {
+                   result = func.apply(this, arguments);
+                 }
+
+                 if (n <= 1) {
+                   func = undefined$1;
+                 }
+
+                 return result;
+               };
+             }
+             /**
+              * Creates a function that invokes `func` with the `this` binding of `thisArg`
+              * and `partials` prepended to the arguments it receives.
+              *
+              * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
+              * may be used as a placeholder for partially applied arguments.
+              *
+              * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
+              * property of bound functions.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Function
+              * @param {Function} func The function to bind.
+              * @param {*} thisArg The `this` binding of `func`.
+              * @param {...*} [partials] The arguments to be partially applied.
+              * @returns {Function} Returns the new bound function.
+              * @example
+              *
+              * function greet(greeting, punctuation) {
+              *   return greeting + ' ' + this.user + punctuation;
+              * }
+              *
+              * var object = { 'user': 'fred' };
+              *
+              * var bound = _.bind(greet, object, 'hi');
+              * bound('!');
+              * // => 'hi fred!'
+              *
+              * // Bound with placeholders.
+              * var bound = _.bind(greet, object, _, '!');
+              * bound('hi');
+              * // => 'hi fred!'
+              */
+
+
+             var bind = baseRest(function (func, thisArg, partials) {
+               var bitmask = WRAP_BIND_FLAG;
+
+               if (partials.length) {
+                 var holders = replaceHolders(partials, getHolder(bind));
+                 bitmask |= WRAP_PARTIAL_FLAG;
+               }
+
+               return createWrap(func, bitmask, thisArg, partials, holders);
+             });
+             /**
+              * Creates a function that invokes the method at `object[key]` with `partials`
+              * prepended to the arguments it receives.
+              *
+              * This method differs from `_.bind` by allowing bound functions to reference
+              * methods that may be redefined or don't yet exist. See
+              * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
+              * for more details.
+              *
+              * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
+              * builds, may be used as a placeholder for partially applied arguments.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.10.0
+              * @category Function
+              * @param {Object} object The object to invoke the method on.
+              * @param {string} key The key of the method.
+              * @param {...*} [partials] The arguments to be partially applied.
+              * @returns {Function} Returns the new bound function.
+              * @example
+              *
+              * var object = {
+              *   'user': 'fred',
+              *   'greet': function(greeting, punctuation) {
+              *     return greeting + ' ' + this.user + punctuation;
+              *   }
+              * };
+              *
+              * var bound = _.bindKey(object, 'greet', 'hi');
+              * bound('!');
+              * // => 'hi fred!'
+              *
+              * object.greet = function(greeting, punctuation) {
+              *   return greeting + 'ya ' + this.user + punctuation;
+              * };
+              *
+              * bound('!');
+              * // => 'hiya fred!'
+              *
+              * // Bound with placeholders.
+              * var bound = _.bindKey(object, 'greet', _, '!');
+              * bound('hi');
+              * // => 'hiya fred!'
+              */
+
+             var bindKey = baseRest(function (object, key, partials) {
+               var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;
+
+               if (partials.length) {
+                 var holders = replaceHolders(partials, getHolder(bindKey));
+                 bitmask |= WRAP_PARTIAL_FLAG;
+               }
+
+               return createWrap(key, bitmask, object, partials, holders);
+             });
+             /**
+              * Creates a function that accepts arguments of `func` and either invokes
+              * `func` returning its result, if at least `arity` number of arguments have
+              * been provided, or returns a function that accepts the remaining `func`
+              * arguments, and so on. The arity of `func` may be specified if `func.length`
+              * is not sufficient.
+              *
+              * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
+              * may be used as a placeholder for provided arguments.
+              *
+              * **Note:** This method doesn't set the "length" property of curried functions.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @category Function
+              * @param {Function} func The function to curry.
+              * @param {number} [arity=func.length] The arity of `func`.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Function} Returns the new curried function.
+              * @example
+              *
+              * var abc = function(a, b, c) {
+              *   return [a, b, c];
+              * };
+              *
+              * var curried = _.curry(abc);
+              *
+              * curried(1)(2)(3);
+              * // => [1, 2, 3]
+              *
+              * curried(1, 2)(3);
+              * // => [1, 2, 3]
+              *
+              * curried(1, 2, 3);
+              * // => [1, 2, 3]
+              *
+              * // Curried with placeholders.
+              * curried(1)(_, 3)(2);
+              * // => [1, 2, 3]
+              */
+
+             function curry(func, arity, guard) {
+               arity = guard ? undefined$1 : arity;
+               var result = createWrap(func, WRAP_CURRY_FLAG, undefined$1, undefined$1, undefined$1, undefined$1, undefined$1, arity);
+               result.placeholder = curry.placeholder;
+               return result;
+             }
+             /**
+              * This method is like `_.curry` except that arguments are applied to `func`
+              * in the manner of `_.partialRight` instead of `_.partial`.
+              *
+              * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
+              * builds, may be used as a placeholder for provided arguments.
+              *
+              * **Note:** This method doesn't set the "length" property of curried functions.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Function
+              * @param {Function} func The function to curry.
+              * @param {number} [arity=func.length] The arity of `func`.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Function} Returns the new curried function.
+              * @example
+              *
+              * var abc = function(a, b, c) {
+              *   return [a, b, c];
+              * };
+              *
+              * var curried = _.curryRight(abc);
+              *
+              * curried(3)(2)(1);
+              * // => [1, 2, 3]
+              *
+              * curried(2, 3)(1);
+              * // => [1, 2, 3]
+              *
+              * curried(1, 2, 3);
+              * // => [1, 2, 3]
+              *
+              * // Curried with placeholders.
+              * curried(3)(1, _)(2);
+              * // => [1, 2, 3]
+              */
+
+
+             function curryRight(func, arity, guard) {
+               arity = guard ? undefined$1 : arity;
+               var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined$1, undefined$1, undefined$1, undefined$1, undefined$1, arity);
+               result.placeholder = curryRight.placeholder;
+               return result;
+             }
+             /**
+              * 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);
+              */
+
+
+             function debounce(func, wait, options) {
+               var lastArgs,
+                   lastThis,
+                   maxWait,
+                   result,
+                   timerId,
+                   lastCallTime,
+                   lastInvokeTime = 0,
+                   leading = false,
+                   maxing = false,
+                   trailing = true;
+
+               if (typeof func != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               wait = toNumber(wait) || 0;
+
+               if (isObject(options)) {
+                 leading = !!options.leading;
+                 maxing = 'maxWait' in options;
+                 maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;
+                 trailing = 'trailing' in options ? !!options.trailing : trailing;
+               }
+
+               function invokeFunc(time) {
+                 var args = lastArgs,
+                     thisArg = lastThis;
+                 lastArgs = lastThis = undefined$1;
+                 lastInvokeTime = time;
+                 result = func.apply(thisArg, args);
+                 return result;
+               }
+
+               function leadingEdge(time) {
+                 // Reset any `maxWait` timer.
+                 lastInvokeTime = time; // Start the timer for the trailing edge.
+
+                 timerId = setTimeout(timerExpired, wait); // Invoke the leading edge.
+
+                 return leading ? invokeFunc(time) : result;
+               }
+
+               function remainingWait(time) {
+                 var timeSinceLastCall = time - lastCallTime,
+                     timeSinceLastInvoke = time - lastInvokeTime,
+                     timeWaiting = wait - timeSinceLastCall;
+                 return maxing ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting;
+               }
+
+               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.
+
+                 return lastCallTime === undefined$1 || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;
+               }
+
+               function timerExpired() {
+                 var time = now();
+
+                 if (shouldInvoke(time)) {
+                   return trailingEdge(time);
+                 } // Restart the timer.
+
+
+                 timerId = setTimeout(timerExpired, remainingWait(time));
+               }
+
+               function trailingEdge(time) {
+                 timerId = undefined$1; // Only invoke if we have `lastArgs` which means `func` has been
+                 // debounced at least once.
+
+                 if (trailing && lastArgs) {
+                   return invokeFunc(time);
+                 }
+
+                 lastArgs = lastThis = undefined$1;
+                 return result;
+               }
+
+               function cancel() {
+                 if (timerId !== undefined$1) {
+                   clearTimeout(timerId);
+                 }
+
+                 lastInvokeTime = 0;
+                 lastArgs = lastCallTime = lastThis = timerId = undefined$1;
+               }
+
+               function flush() {
+                 return timerId === undefined$1 ? result : trailingEdge(now());
+               }
+
+               function debounced() {
+                 var time = now(),
+                     isInvoking = shouldInvoke(time);
+                 lastArgs = arguments;
+                 lastThis = this;
+                 lastCallTime = time;
+
+                 if (isInvoking) {
+                   if (timerId === undefined$1) {
+                     return leadingEdge(lastCallTime);
+                   }
+
+                   if (maxing) {
+                     // Handle invocations in a tight loop.
+                     clearTimeout(timerId);
+                     timerId = setTimeout(timerExpired, wait);
+                     return invokeFunc(lastCallTime);
+                   }
+                 }
+
+                 if (timerId === undefined$1) {
+                   timerId = setTimeout(timerExpired, wait);
+                 }
+
+                 return result;
+               }
+
+               debounced.cancel = cancel;
+               debounced.flush = flush;
+               return debounced;
+             }
+             /**
+              * Defers invoking the `func` until the current call stack has cleared. Any
+              * additional arguments are provided to `func` when it's invoked.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Function
+              * @param {Function} func The function to defer.
+              * @param {...*} [args] The arguments to invoke `func` with.
+              * @returns {number} Returns the timer id.
+              * @example
+              *
+              * _.defer(function(text) {
+              *   console.log(text);
+              * }, 'deferred');
+              * // => Logs 'deferred' after one millisecond.
+              */
+
+
+             var defer = baseRest(function (func, args) {
+               return baseDelay(func, 1, args);
+             });
+             /**
+              * Invokes `func` after `wait` milliseconds. Any additional arguments are
+              * provided to `func` when it's invoked.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Function
+              * @param {Function} func The function to delay.
+              * @param {number} wait The number of milliseconds to delay invocation.
+              * @param {...*} [args] The arguments to invoke `func` with.
+              * @returns {number} Returns the timer id.
+              * @example
+              *
+              * _.delay(function(text) {
+              *   console.log(text);
+              * }, 1000, 'later');
+              * // => Logs 'later' after one second.
+              */
+
+             var delay = baseRest(function (func, wait, args) {
+               return baseDelay(func, toNumber(wait) || 0, args);
+             });
+             /**
+              * Creates a function that invokes `func` with arguments reversed.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Function
+              * @param {Function} func The function to flip arguments for.
+              * @returns {Function} Returns the new flipped function.
+              * @example
+              *
+              * var flipped = _.flip(function() {
+              *   return _.toArray(arguments);
+              * });
+              *
+              * flipped('a', 'b', 'c', 'd');
+              * // => ['d', 'c', 'b', 'a']
+              */
+
+             function flip(func) {
+               return createWrap(func, WRAP_FLIP_FLAG);
+             }
+             /**
+              * Creates a function that memoizes the result of `func`. If `resolver` is
+              * provided, it determines the cache key for storing the result based on the
+              * arguments provided to the memoized function. By default, the first argument
+              * provided to the memoized function is used as the map cache key. The `func`
+              * is invoked with the `this` binding of the memoized function.
+              *
+              * **Note:** The cache is exposed as the `cache` property on the memoized
+              * function. Its creation may be customized by replacing the `_.memoize.Cache`
+              * constructor with one whose instances implement the
+              * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
+              * method interface of `clear`, `delete`, `get`, `has`, and `set`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Function
+              * @param {Function} func The function to have its output memoized.
+              * @param {Function} [resolver] The function to resolve the cache key.
+              * @returns {Function} Returns the new memoized function.
+              * @example
+              *
+              * var object = { 'a': 1, 'b': 2 };
+              * var other = { 'c': 3, 'd': 4 };
+              *
+              * var values = _.memoize(_.values);
+              * values(object);
+              * // => [1, 2]
+              *
+              * values(other);
+              * // => [3, 4]
+              *
+              * object.a = 2;
+              * values(object);
+              * // => [1, 2]
+              *
+              * // Modify the result cache.
+              * values.cache.set(object, ['a', 'b']);
+              * values(object);
+              * // => ['a', 'b']
+              *
+              * // Replace `_.memoize.Cache`.
+              * _.memoize.Cache = WeakMap;
+              */
+
+
+             function memoize(func, resolver) {
+               if (typeof func != 'function' || resolver != null && typeof resolver != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               var memoized = function memoized() {
+                 var args = arguments,
+                     key = resolver ? resolver.apply(this, args) : args[0],
+                     cache = memoized.cache;
+
+                 if (cache.has(key)) {
+                   return cache.get(key);
+                 }
+
+                 var result = func.apply(this, args);
+                 memoized.cache = cache.set(key, result) || cache;
+                 return result;
+               };
+
+               memoized.cache = new (memoize.Cache || MapCache)();
+               return memoized;
+             } // Expose `MapCache`.
+
+
+             memoize.Cache = MapCache;
+             /**
+              * Creates a function that negates the result of the predicate `func`. The
+              * `func` predicate is invoked with the `this` binding and arguments of the
+              * created function.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Function
+              * @param {Function} predicate The predicate to negate.
+              * @returns {Function} Returns the new negated function.
+              * @example
+              *
+              * function isEven(n) {
+              *   return n % 2 == 0;
+              * }
+              *
+              * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
+              * // => [1, 3, 5]
+              */
+
+             function negate(predicate) {
+               if (typeof predicate != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               return function () {
+                 var args = arguments;
+
+                 switch (args.length) {
+                   case 0:
+                     return !predicate.call(this);
+
+                   case 1:
+                     return !predicate.call(this, args[0]);
+
+                   case 2:
+                     return !predicate.call(this, args[0], args[1]);
+
+                   case 3:
+                     return !predicate.call(this, args[0], args[1], args[2]);
+                 }
+
+                 return !predicate.apply(this, args);
+               };
+             }
+             /**
+              * Creates a function that is restricted to invoking `func` once. Repeat calls
+              * to the function return the value of the first invocation. The `func` is
+              * invoked with the `this` binding and arguments of the created function.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Function
+              * @param {Function} func The function to restrict.
+              * @returns {Function} Returns the new restricted function.
+              * @example
+              *
+              * var initialize = _.once(createApplication);
+              * initialize();
+              * initialize();
+              * // => `createApplication` is invoked once
+              */
+
+
+             function once(func) {
+               return before(2, func);
+             }
+             /**
+              * Creates a function that invokes `func` with its arguments transformed.
+              *
+              * @static
+              * @since 4.0.0
+              * @memberOf _
+              * @category Function
+              * @param {Function} func The function to wrap.
+              * @param {...(Function|Function[])} [transforms=[_.identity]]
+              *  The argument transforms.
+              * @returns {Function} Returns the new function.
+              * @example
+              *
+              * function doubled(n) {
+              *   return n * 2;
+              * }
+              *
+              * function square(n) {
+              *   return n * n;
+              * }
+              *
+              * var func = _.overArgs(function(x, y) {
+              *   return [x, y];
+              * }, [square, doubled]);
+              *
+              * func(9, 3);
+              * // => [81, 6]
+              *
+              * func(10, 5);
+              * // => [100, 10]
+              */
+
+
+             var overArgs = castRest(function (func, transforms) {
+               transforms = transforms.length == 1 && isArray(transforms[0]) ? arrayMap(transforms[0], baseUnary(getIteratee())) : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));
+               var funcsLength = transforms.length;
+               return baseRest(function (args) {
+                 var index = -1,
+                     length = nativeMin(args.length, funcsLength);
+
+                 while (++index < length) {
+                   args[index] = transforms[index].call(this, args[index]);
+                 }
+
+                 return apply(func, this, args);
+               });
+             });
+             /**
+              * Creates a function that invokes `func` with `partials` prepended to the
+              * arguments it receives. This method is like `_.bind` except it does **not**
+              * alter the `this` binding.
+              *
+              * The `_.partial.placeholder` value, which defaults to `_` in monolithic
+              * builds, may be used as a placeholder for partially applied arguments.
+              *
+              * **Note:** This method doesn't set the "length" property of partially
+              * applied functions.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.2.0
+              * @category Function
+              * @param {Function} func The function to partially apply arguments to.
+              * @param {...*} [partials] The arguments to be partially applied.
+              * @returns {Function} Returns the new partially applied function.
+              * @example
+              *
+              * function greet(greeting, name) {
+              *   return greeting + ' ' + name;
+              * }
+              *
+              * var sayHelloTo = _.partial(greet, 'hello');
+              * sayHelloTo('fred');
+              * // => 'hello fred'
+              *
+              * // Partially applied with placeholders.
+              * var greetFred = _.partial(greet, _, 'fred');
+              * greetFred('hi');
+              * // => 'hi fred'
+              */
+
+             var partial = baseRest(function (func, partials) {
+               var holders = replaceHolders(partials, getHolder(partial));
+               return createWrap(func, WRAP_PARTIAL_FLAG, undefined$1, partials, holders);
+             });
+             /**
+              * This method is like `_.partial` except that partially applied arguments
+              * are appended to the arguments it receives.
+              *
+              * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
+              * builds, may be used as a placeholder for partially applied arguments.
+              *
+              * **Note:** This method doesn't set the "length" property of partially
+              * applied functions.
+              *
+              * @static
+              * @memberOf _
+              * @since 1.0.0
+              * @category Function
+              * @param {Function} func The function to partially apply arguments to.
+              * @param {...*} [partials] The arguments to be partially applied.
+              * @returns {Function} Returns the new partially applied function.
+              * @example
+              *
+              * function greet(greeting, name) {
+              *   return greeting + ' ' + name;
+              * }
+              *
+              * var greetFred = _.partialRight(greet, 'fred');
+              * greetFred('hi');
+              * // => 'hi fred'
+              *
+              * // Partially applied with placeholders.
+              * var sayHelloTo = _.partialRight(greet, 'hello', _);
+              * sayHelloTo('fred');
+              * // => 'hello fred'
+              */
+
+             var partialRight = baseRest(function (func, partials) {
+               var holders = replaceHolders(partials, getHolder(partialRight));
+               return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined$1, partials, holders);
+             });
+             /**
+              * Creates a function that invokes `func` with arguments arranged according
+              * to the specified `indexes` where the argument value at the first index is
+              * provided as the first argument, the argument value at the second index is
+              * provided as the second argument, and so on.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Function
+              * @param {Function} func The function to rearrange arguments for.
+              * @param {...(number|number[])} indexes The arranged argument indexes.
+              * @returns {Function} Returns the new function.
+              * @example
+              *
+              * var rearged = _.rearg(function(a, b, c) {
+              *   return [a, b, c];
+              * }, [2, 0, 1]);
+              *
+              * rearged('b', 'c', 'a')
+              * // => ['a', 'b', 'c']
+              */
+
+             var rearg = flatRest(function (func, indexes) {
+               return createWrap(func, WRAP_REARG_FLAG, undefined$1, undefined$1, undefined$1, indexes);
+             });
+             /**
+              * Creates a function that invokes `func` with the `this` binding of the
+              * created function and arguments from `start` and beyond provided as
+              * an array.
+              *
+              * **Note:** This method is based on the
+              * [rest parameter](https://mdn.io/rest_parameters).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Function
+              * @param {Function} func The function to apply a rest parameter to.
+              * @param {number} [start=func.length-1] The start position of the rest parameter.
+              * @returns {Function} Returns the new function.
+              * @example
+              *
+              * var say = _.rest(function(what, names) {
+              *   return what + ' ' + _.initial(names).join(', ') +
+              *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
+              * });
+              *
+              * say('hello', 'fred', 'barney', 'pebbles');
+              * // => 'hello fred, barney, & pebbles'
+              */
+
+             function rest(func, start) {
+               if (typeof func != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               start = start === undefined$1 ? start : toInteger(start);
+               return baseRest(func, start);
+             }
+             /**
+              * Creates a function that invokes `func` with the `this` binding of the
+              * create function and an array of arguments much like
+              * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
+              *
+              * **Note:** This method is based on the
+              * [spread operator](https://mdn.io/spread_operator).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.2.0
+              * @category Function
+              * @param {Function} func The function to spread arguments over.
+              * @param {number} [start=0] The start position of the spread.
+              * @returns {Function} Returns the new function.
+              * @example
+              *
+              * var say = _.spread(function(who, what) {
+              *   return who + ' says ' + what;
+              * });
+              *
+              * say(['fred', 'hello']);
+              * // => 'fred says hello'
+              *
+              * var numbers = Promise.all([
+              *   Promise.resolve(40),
+              *   Promise.resolve(36)
+              * ]);
+              *
+              * numbers.then(_.spread(function(x, y) {
+              *   return x + y;
+              * }));
+              * // => a Promise of 76
+              */
+
+
+             function spread(func, start) {
+               if (typeof func != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               start = start == null ? 0 : nativeMax(toInteger(start), 0);
+               return baseRest(function (args) {
+                 var array = args[start],
+                     otherArgs = castSlice(args, 0, start);
+
+                 if (array) {
+                   arrayPush(otherArgs, array);
+                 }
+
+                 return apply(func, this, otherArgs);
+               });
+             }
+             /**
+              * 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);
+              */
+
+
+             function throttle(func, wait, options) {
+               var leading = true,
+                   trailing = true;
+
+               if (typeof func != 'function') {
+                 throw new TypeError(FUNC_ERROR_TEXT);
+               }
+
+               if (isObject(options)) {
+                 leading = 'leading' in options ? !!options.leading : leading;
+                 trailing = 'trailing' in options ? !!options.trailing : trailing;
+               }
+
+               return debounce(func, wait, {
+                 'leading': leading,
+                 'maxWait': wait,
+                 'trailing': trailing
+               });
+             }
+             /**
+              * Creates a function that accepts up to one argument, ignoring any
+              * additional arguments.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Function
+              * @param {Function} func The function to cap arguments for.
+              * @returns {Function} Returns the new capped function.
+              * @example
+              *
+              * _.map(['6', '8', '10'], _.unary(parseInt));
+              * // => [6, 8, 10]
+              */
+
+
+             function unary(func) {
+               return ary(func, 1);
+             }
+             /**
+              * Creates a function that provides `value` to `wrapper` as its first
+              * argument. Any additional arguments provided to the function are appended
+              * to those provided to the `wrapper`. The wrapper is invoked with the `this`
+              * binding of the created function.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Function
+              * @param {*} value The value to wrap.
+              * @param {Function} [wrapper=identity] The wrapper function.
+              * @returns {Function} Returns the new function.
+              * @example
+              *
+              * var p = _.wrap(_.escape, function(func, text) {
+              *   return '<p>' + func(text) + '</p>';
+              * });
+              *
+              * p('fred, barney, & pebbles');
+              * // => '<p>fred, barney, &amp; pebbles</p>'
+              */
+
+
+             function wrap(value, wrapper) {
+               return partial(castFunction(wrapper), value);
+             }
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Casts `value` as an array if it's not one.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.4.0
+              * @category Lang
+              * @param {*} value The value to inspect.
+              * @returns {Array} Returns the cast array.
+              * @example
+              *
+              * _.castArray(1);
+              * // => [1]
+              *
+              * _.castArray({ 'a': 1 });
+              * // => [{ 'a': 1 }]
+              *
+              * _.castArray('abc');
+              * // => ['abc']
+              *
+              * _.castArray(null);
+              * // => [null]
+              *
+              * _.castArray(undefined);
+              * // => [undefined]
+              *
+              * _.castArray();
+              * // => []
+              *
+              * var array = [1, 2, 3];
+              * console.log(_.castArray(array) === array);
+              * // => true
+              */
+
+
+             function castArray() {
+               if (!arguments.length) {
+                 return [];
+               }
+
+               var value = arguments[0];
+               return isArray(value) ? value : [value];
+             }
+             /**
+              * Creates a shallow clone of `value`.
+              *
+              * **Note:** This method is loosely based on the
+              * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
+              * and supports cloning arrays, array buffers, booleans, date objects, maps,
+              * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
+              * arrays. The own enumerable properties of `arguments` objects are cloned
+              * as plain objects. An empty object is returned for uncloneable values such
+              * as error objects, functions, DOM nodes, and WeakMaps.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to clone.
+              * @returns {*} Returns the cloned value.
+              * @see _.cloneDeep
+              * @example
+              *
+              * var objects = [{ 'a': 1 }, { 'b': 2 }];
+              *
+              * var shallow = _.clone(objects);
+              * console.log(shallow[0] === objects[0]);
+              * // => true
+              */
+
+
+             function clone(value) {
+               return baseClone(value, CLONE_SYMBOLS_FLAG);
+             }
+             /**
+              * This method is like `_.clone` except that it accepts `customizer` which
+              * is invoked to produce the cloned value. If `customizer` returns `undefined`,
+              * cloning is handled by the method instead. The `customizer` is invoked with
+              * up to four arguments; (value [, index|key, object, stack]).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to clone.
+              * @param {Function} [customizer] The function to customize cloning.
+              * @returns {*} Returns the cloned value.
+              * @see _.cloneDeepWith
+              * @example
+              *
+              * function customizer(value) {
+              *   if (_.isElement(value)) {
+              *     return value.cloneNode(false);
+              *   }
+              * }
+              *
+              * var el = _.cloneWith(document.body, customizer);
+              *
+              * console.log(el === document.body);
+              * // => false
+              * console.log(el.nodeName);
+              * // => 'BODY'
+              * console.log(el.childNodes.length);
+              * // => 0
+              */
+
+
+             function cloneWith(value, customizer) {
+               customizer = typeof customizer == 'function' ? customizer : undefined$1;
+               return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);
+             }
+             /**
+              * This method is like `_.clone` except that it recursively clones `value`.
+              *
+              * @static
+              * @memberOf _
+              * @since 1.0.0
+              * @category Lang
+              * @param {*} value The value to recursively clone.
+              * @returns {*} Returns the deep cloned value.
+              * @see _.clone
+              * @example
+              *
+              * var objects = [{ 'a': 1 }, { 'b': 2 }];
+              *
+              * var deep = _.cloneDeep(objects);
+              * console.log(deep[0] === objects[0]);
+              * // => false
+              */
+
+
+             function cloneDeep(value) {
+               return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);
+             }
+             /**
+              * This method is like `_.cloneWith` except that it recursively clones `value`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to recursively clone.
+              * @param {Function} [customizer] The function to customize cloning.
+              * @returns {*} Returns the deep cloned value.
+              * @see _.cloneWith
+              * @example
+              *
+              * function customizer(value) {
+              *   if (_.isElement(value)) {
+              *     return value.cloneNode(true);
+              *   }
+              * }
+              *
+              * var el = _.cloneDeepWith(document.body, customizer);
+              *
+              * console.log(el === document.body);
+              * // => false
+              * console.log(el.nodeName);
+              * // => 'BODY'
+              * console.log(el.childNodes.length);
+              * // => 20
+              */
+
+
+             function cloneDeepWith(value, customizer) {
+               customizer = typeof customizer == 'function' ? customizer : undefined$1;
+               return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);
+             }
+             /**
+              * Checks if `object` conforms to `source` by invoking the predicate
+              * properties of `source` with the corresponding property values of `object`.
+              *
+              * **Note:** This method is equivalent to `_.conforms` when `source` is
+              * partially applied.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.14.0
+              * @category Lang
+              * @param {Object} object The object to inspect.
+              * @param {Object} source The object of property predicates to conform to.
+              * @returns {boolean} Returns `true` if `object` conforms, else `false`.
+              * @example
+              *
+              * var object = { 'a': 1, 'b': 2 };
+              *
+              * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
+              * // => true
+              *
+              * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
+              * // => false
+              */
+
+
+             function conformsTo(object, source) {
+               return source == null || baseConformsTo(object, source, keys(source));
+             }
+             /**
+              * Performs a
+              * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
+              * comparison between two values to determine if they are equivalent.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+              * @example
+              *
+              * var object = { 'a': 1 };
+              * var other = { 'a': 1 };
+              *
+              * _.eq(object, object);
+              * // => true
+              *
+              * _.eq(object, other);
+              * // => false
+              *
+              * _.eq('a', 'a');
+              * // => true
+              *
+              * _.eq('a', Object('a'));
+              * // => false
+              *
+              * _.eq(NaN, NaN);
+              * // => true
+              */
+
+
+             function eq(value, other) {
+               return value === other || value !== value && other !== other;
+             }
+             /**
+              * Checks if `value` is greater than `other`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.9.0
+              * @category Lang
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @returns {boolean} Returns `true` if `value` is greater than `other`,
+              *  else `false`.
+              * @see _.lt
+              * @example
+              *
+              * _.gt(3, 1);
+              * // => true
+              *
+              * _.gt(3, 3);
+              * // => false
+              *
+              * _.gt(1, 3);
+              * // => false
+              */
+
+
+             var gt = createRelationalOperation(baseGt);
+             /**
+              * Checks if `value` is greater than or equal to `other`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.9.0
+              * @category Lang
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @returns {boolean} Returns `true` if `value` is greater than or equal to
+              *  `other`, else `false`.
+              * @see _.lte
+              * @example
+              *
+              * _.gte(3, 1);
+              * // => true
+              *
+              * _.gte(3, 3);
+              * // => true
+              *
+              * _.gte(1, 3);
+              * // => false
+              */
+
+             var gte = createRelationalOperation(function (value, other) {
+               return value >= other;
+             });
+             /**
+              * Checks if `value` is likely an `arguments` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is an `arguments` object,
+              *  else `false`.
+              * @example
+              *
+              * _.isArguments(function() { return arguments; }());
+              * // => true
+              *
+              * _.isArguments([1, 2, 3]);
+              * // => false
+              */
+
+             var isArguments = baseIsArguments(function () {
+               return arguments;
+             }()) ? baseIsArguments : function (value) {
+               return isObjectLike(value) && hasOwnProperty.call(value, 'callee') && !propertyIsEnumerable.call(value, 'callee');
+             };
+             /**
+              * Checks if `value` is classified as an `Array` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is an array, else `false`.
+              * @example
+              *
+              * _.isArray([1, 2, 3]);
+              * // => true
+              *
+              * _.isArray(document.body.children);
+              * // => false
+              *
+              * _.isArray('abc');
+              * // => false
+              *
+              * _.isArray(_.noop);
+              * // => false
+              */
+
+             var isArray = Array.isArray;
+             /**
+              * Checks if `value` is classified as an `ArrayBuffer` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.3.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
+              * @example
+              *
+              * _.isArrayBuffer(new ArrayBuffer(2));
+              * // => true
+              *
+              * _.isArrayBuffer(new Array(2));
+              * // => false
+              */
+
+             var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;
+             /**
+              * Checks if `value` is array-like. A value is considered array-like if it's
+              * not a function and has a `value.length` that's an integer greater than or
+              * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
+              * @example
+              *
+              * _.isArrayLike([1, 2, 3]);
+              * // => true
+              *
+              * _.isArrayLike(document.body.children);
+              * // => true
+              *
+              * _.isArrayLike('abc');
+              * // => true
+              *
+              * _.isArrayLike(_.noop);
+              * // => false
+              */
+
+             function isArrayLike(value) {
+               return value != null && isLength(value.length) && !isFunction(value);
+             }
+             /**
+              * This method is like `_.isArrayLike` except that it also checks if `value`
+              * is an object.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is an array-like object,
+              *  else `false`.
+              * @example
+              *
+              * _.isArrayLikeObject([1, 2, 3]);
+              * // => true
+              *
+              * _.isArrayLikeObject(document.body.children);
+              * // => true
+              *
+              * _.isArrayLikeObject('abc');
+              * // => false
+              *
+              * _.isArrayLikeObject(_.noop);
+              * // => false
+              */
+
+
+             function isArrayLikeObject(value) {
+               return isObjectLike(value) && isArrayLike(value);
+             }
+             /**
+              * Checks if `value` is classified as a boolean primitive or object.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
+              * @example
+              *
+              * _.isBoolean(false);
+              * // => true
+              *
+              * _.isBoolean(null);
+              * // => false
+              */
+
+
+             function isBoolean(value) {
+               return value === true || value === false || isObjectLike(value) && baseGetTag(value) == boolTag;
+             }
+             /**
+              * Checks if `value` is a buffer.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.3.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
+              * @example
+              *
+              * _.isBuffer(new Buffer(2));
+              * // => true
+              *
+              * _.isBuffer(new Uint8Array(2));
+              * // => false
+              */
+
+
+             var isBuffer = nativeIsBuffer || stubFalse;
+             /**
+              * Checks if `value` is classified as a `Date` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
+              * @example
+              *
+              * _.isDate(new Date);
+              * // => true
+              *
+              * _.isDate('Mon April 23 2012');
+              * // => false
+              */
+
+             var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;
+             /**
+              * Checks if `value` is likely a DOM element.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
+              * @example
+              *
+              * _.isElement(document.body);
+              * // => true
+              *
+              * _.isElement('<body>');
+              * // => false
+              */
+
+             function isElement(value) {
+               return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
+             }
+             /**
+              * Checks if `value` is an empty object, collection, map, or set.
+              *
+              * Objects are considered empty if they have no own enumerable string keyed
+              * properties.
+              *
+              * Array-like values such as `arguments` objects, arrays, buffers, strings, or
+              * jQuery-like collections are considered empty if they have a `length` of `0`.
+              * Similarly, maps and sets are considered empty if they have a `size` of `0`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is empty, else `false`.
+              * @example
+              *
+              * _.isEmpty(null);
+              * // => true
+              *
+              * _.isEmpty(true);
+              * // => true
+              *
+              * _.isEmpty(1);
+              * // => true
+              *
+              * _.isEmpty([1, 2, 3]);
+              * // => false
+              *
+              * _.isEmpty({ 'a': 1 });
+              * // => false
+              */
+
+
+             function isEmpty(value) {
+               if (value == null) {
+                 return true;
+               }
+
+               if (isArrayLike(value) && (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' || isBuffer(value) || isTypedArray(value) || isArguments(value))) {
+                 return !value.length;
+               }
+
+               var tag = getTag(value);
+
+               if (tag == mapTag || tag == setTag) {
+                 return !value.size;
+               }
+
+               if (isPrototype(value)) {
+                 return !baseKeys(value).length;
+               }
+
+               for (var key in value) {
+                 if (hasOwnProperty.call(value, key)) {
+                   return false;
+                 }
+               }
+
+               return true;
+             }
+             /**
+              * Performs a deep comparison between two values to determine if they are
+              * equivalent.
+              *
+              * **Note:** This method supports comparing arrays, array buffers, booleans,
+              * date objects, error objects, maps, numbers, `Object` objects, regexes,
+              * sets, strings, symbols, and typed arrays. `Object` objects are compared
+              * by their own, not inherited, enumerable properties. Functions and DOM
+              * nodes are compared by strict equality, i.e. `===`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+              * @example
+              *
+              * var object = { 'a': 1 };
+              * var other = { 'a': 1 };
+              *
+              * _.isEqual(object, other);
+              * // => true
+              *
+              * object === other;
+              * // => false
+              */
+
+
+             function isEqual(value, other) {
+               return baseIsEqual(value, other);
+             }
+             /**
+              * This method is like `_.isEqual` except that it accepts `customizer` which
+              * is invoked to compare values. If `customizer` returns `undefined`, comparisons
+              * are handled by the method instead. The `customizer` is invoked with up to
+              * six arguments: (objValue, othValue [, index|key, object, other, stack]).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @param {Function} [customizer] The function to customize comparisons.
+              * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
+              * @example
+              *
+              * function isGreeting(value) {
+              *   return /^h(?:i|ello)$/.test(value);
+              * }
+              *
+              * function customizer(objValue, othValue) {
+              *   if (isGreeting(objValue) && isGreeting(othValue)) {
+              *     return true;
+              *   }
+              * }
+              *
+              * var array = ['hello', 'goodbye'];
+              * var other = ['hi', 'goodbye'];
+              *
+              * _.isEqualWith(array, other, customizer);
+              * // => true
+              */
+
+
+             function isEqualWith(value, other, customizer) {
+               customizer = typeof customizer == 'function' ? customizer : undefined$1;
+               var result = customizer ? customizer(value, other) : undefined$1;
+               return result === undefined$1 ? baseIsEqual(value, other, undefined$1, customizer) : !!result;
+             }
+             /**
+              * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
+              * `SyntaxError`, `TypeError`, or `URIError` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
+              * @example
+              *
+              * _.isError(new Error);
+              * // => true
+              *
+              * _.isError(Error);
+              * // => false
+              */
+
+
+             function isError(value) {
+               if (!isObjectLike(value)) {
+                 return false;
+               }
+
+               var tag = baseGetTag(value);
+               return tag == errorTag || tag == domExcTag || typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value);
+             }
+             /**
+              * Checks if `value` is a finite primitive number.
+              *
+              * **Note:** This method is based on
+              * [`Number.isFinite`](https://mdn.io/Number/isFinite).
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
+              * @example
+              *
+              * _.isFinite(3);
+              * // => true
+              *
+              * _.isFinite(Number.MIN_VALUE);
+              * // => true
+              *
+              * _.isFinite(Infinity);
+              * // => false
+              *
+              * _.isFinite('3');
+              * // => false
+              */
+
+
+             function isFinite(value) {
+               return typeof value == 'number' && nativeIsFinite(value);
+             }
+             /**
+              * Checks if `value` is classified as a `Function` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a function, else `false`.
+              * @example
+              *
+              * _.isFunction(_);
+              * // => true
+              *
+              * _.isFunction(/abc/);
+              * // => false
+              */
+
+
+             function isFunction(value) {
+               if (!isObject(value)) {
+                 return false;
+               } // The use of `Object#toString` avoids issues with the `typeof` operator
+               // in Safari 9 which returns 'object' for typed arrays and other constructors.
+
+
+               var tag = baseGetTag(value);
+               return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
+             }
+             /**
+              * Checks if `value` is an integer.
+              *
+              * **Note:** This method is based on
+              * [`Number.isInteger`](https://mdn.io/Number/isInteger).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
+              * @example
+              *
+              * _.isInteger(3);
+              * // => true
+              *
+              * _.isInteger(Number.MIN_VALUE);
+              * // => false
+              *
+              * _.isInteger(Infinity);
+              * // => false
+              *
+              * _.isInteger('3');
+              * // => false
+              */
+
+
+             function isInteger(value) {
+               return typeof value == 'number' && value == toInteger(value);
+             }
+             /**
+              * Checks if `value` is a valid array-like length.
+              *
+              * **Note:** This method is loosely based on
+              * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
+              * @example
+              *
+              * _.isLength(3);
+              * // => true
+              *
+              * _.isLength(Number.MIN_VALUE);
+              * // => false
+              *
+              * _.isLength(Infinity);
+              * // => false
+              *
+              * _.isLength('3');
+              * // => false
+              */
+
+
+             function isLength(value) {
+               return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
+             }
+             /**
+              * 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(value) {
+               var type = _typeof(value);
+
+               return value != null && (type == 'object' || type == 'function');
+             }
+             /**
+              * 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';
+             }
+             /**
+              * Checks if `value` is classified as a `Map` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.3.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a map, else `false`.
+              * @example
+              *
+              * _.isMap(new Map);
+              * // => true
+              *
+              * _.isMap(new WeakMap);
+              * // => false
+              */
+
+
+             var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;
+             /**
+              * Performs a partial deep comparison between `object` and `source` to
+              * determine if `object` contains equivalent property values.
+              *
+              * **Note:** This method is equivalent to `_.matches` when `source` is
+              * partially applied.
+              *
+              * Partial comparisons will match empty array and empty object `source`
+              * values against any array or object value, respectively. See `_.isEqual`
+              * for a list of supported value comparisons.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Lang
+              * @param {Object} object The object to inspect.
+              * @param {Object} source The object of property values to match.
+              * @returns {boolean} Returns `true` if `object` is a match, else `false`.
+              * @example
+              *
+              * var object = { 'a': 1, 'b': 2 };
+              *
+              * _.isMatch(object, { 'b': 2 });
+              * // => true
+              *
+              * _.isMatch(object, { 'b': 1 });
+              * // => false
+              */
+
+             function isMatch(object, source) {
+               return object === source || baseIsMatch(object, source, getMatchData(source));
+             }
+             /**
+              * This method is like `_.isMatch` except that it accepts `customizer` which
+              * is invoked to compare values. If `customizer` returns `undefined`, comparisons
+              * are handled by the method instead. The `customizer` is invoked with five
+              * arguments: (objValue, srcValue, index|key, object, source).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {Object} object The object to inspect.
+              * @param {Object} source The object of property values to match.
+              * @param {Function} [customizer] The function to customize comparisons.
+              * @returns {boolean} Returns `true` if `object` is a match, else `false`.
+              * @example
+              *
+              * function isGreeting(value) {
+              *   return /^h(?:i|ello)$/.test(value);
+              * }
+              *
+              * function customizer(objValue, srcValue) {
+              *   if (isGreeting(objValue) && isGreeting(srcValue)) {
+              *     return true;
+              *   }
+              * }
+              *
+              * var object = { 'greeting': 'hello' };
+              * var source = { 'greeting': 'hi' };
+              *
+              * _.isMatchWith(object, source, customizer);
+              * // => true
+              */
+
+
+             function isMatchWith(object, source, customizer) {
+               customizer = typeof customizer == 'function' ? customizer : undefined$1;
+               return baseIsMatch(object, source, getMatchData(source), customizer);
+             }
+             /**
+              * Checks if `value` is `NaN`.
+              *
+              * **Note:** This method is based on
+              * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
+              * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
+              * `undefined` and other non-number values.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
+              * @example
+              *
+              * _.isNaN(NaN);
+              * // => true
+              *
+              * _.isNaN(new Number(NaN));
+              * // => true
+              *
+              * isNaN(undefined);
+              * // => true
+              *
+              * _.isNaN(undefined);
+              * // => false
+              */
+
+
+             function isNaN(value) {
+               // An `NaN` primitive is the only value that is not equal to itself.
+               // Perform the `toStringTag` check first to avoid errors with some
+               // ActiveX objects in IE.
+               return isNumber(value) && value != +value;
+             }
+             /**
+              * Checks if `value` is a pristine native function.
+              *
+              * **Note:** This method can't reliably detect native functions in the presence
+              * of the core-js package because core-js circumvents this kind of detection.
+              * Despite multiple requests, the core-js maintainer has made it clear: any
+              * attempt to fix the detection will be obstructed. As a result, we're left
+              * with little choice but to throw an error. Unfortunately, this also affects
+              * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
+              * which rely on core-js.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a native function,
+              *  else `false`.
+              * @example
+              *
+              * _.isNative(Array.prototype.push);
+              * // => true
+              *
+              * _.isNative(_);
+              * // => false
+              */
+
+
+             function isNative(value) {
+               if (isMaskable(value)) {
+                 throw new Error(CORE_ERROR_TEXT);
+               }
+
+               return baseIsNative(value);
+             }
+             /**
+              * Checks if `value` is `null`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
+              * @example
+              *
+              * _.isNull(null);
+              * // => true
+              *
+              * _.isNull(void 0);
+              * // => false
+              */
+
+
+             function isNull(value) {
+               return value === null;
+             }
+             /**
+              * Checks if `value` is `null` or `undefined`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
+              * @example
+              *
+              * _.isNil(null);
+              * // => true
+              *
+              * _.isNil(void 0);
+              * // => true
+              *
+              * _.isNil(NaN);
+              * // => false
+              */
+
+
+             function isNil(value) {
+               return value == null;
+             }
+             /**
+              * Checks if `value` is classified as a `Number` primitive or object.
+              *
+              * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
+              * classified as numbers, use the `_.isFinite` method.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a number, else `false`.
+              * @example
+              *
+              * _.isNumber(3);
+              * // => true
+              *
+              * _.isNumber(Number.MIN_VALUE);
+              * // => true
+              *
+              * _.isNumber(Infinity);
+              * // => true
+              *
+              * _.isNumber('3');
+              * // => false
+              */
+
+
+             function isNumber(value) {
+               return typeof value == 'number' || isObjectLike(value) && baseGetTag(value) == numberTag;
+             }
+             /**
+              * Checks if `value` is a plain object, that is, an object created by the
+              * `Object` constructor or one with a `[[Prototype]]` of `null`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.8.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              * }
+              *
+              * _.isPlainObject(new Foo);
+              * // => false
+              *
+              * _.isPlainObject([1, 2, 3]);
+              * // => false
+              *
+              * _.isPlainObject({ 'x': 0, 'y': 0 });
+              * // => true
+              *
+              * _.isPlainObject(Object.create(null));
+              * // => true
+              */
+
+
+             function isPlainObject(value) {
+               if (!isObjectLike(value) || baseGetTag(value) != objectTag) {
+                 return false;
+               }
+
+               var proto = getPrototype(value);
+
+               if (proto === null) {
+                 return true;
+               }
+
+               var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;
+               return typeof Ctor == 'function' && Ctor instanceof Ctor && funcToString.call(Ctor) == objectCtorString;
+             }
+             /**
+              * Checks if `value` is classified as a `RegExp` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.1.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
+              * @example
+              *
+              * _.isRegExp(/abc/);
+              * // => true
+              *
+              * _.isRegExp('/abc/');
+              * // => false
+              */
+
+
+             var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;
+             /**
+              * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
+              * double precision number which isn't the result of a rounded unsafe integer.
+              *
+              * **Note:** This method is based on
+              * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
+              * @example
+              *
+              * _.isSafeInteger(3);
+              * // => true
+              *
+              * _.isSafeInteger(Number.MIN_VALUE);
+              * // => false
+              *
+              * _.isSafeInteger(Infinity);
+              * // => false
+              *
+              * _.isSafeInteger('3');
+              * // => false
+              */
+
+             function isSafeInteger(value) {
+               return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;
+             }
+             /**
+              * Checks if `value` is classified as a `Set` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.3.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a set, else `false`.
+              * @example
+              *
+              * _.isSet(new Set);
+              * // => true
+              *
+              * _.isSet(new WeakSet);
+              * // => false
+              */
+
+
+             var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;
+             /**
+              * Checks if `value` is classified as a `String` primitive or object.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a string, else `false`.
+              * @example
+              *
+              * _.isString('abc');
+              * // => true
+              *
+              * _.isString(1);
+              * // => false
+              */
+
+             function isString(value) {
+               return typeof value == 'string' || !isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag;
+             }
+             /**
+              * 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
+              */
+
+
+             function isSymbol(value) {
+               return _typeof(value) == 'symbol' || isObjectLike(value) && baseGetTag(value) == symbolTag;
+             }
+             /**
+              * Checks if `value` is classified as a typed array.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
+              * @example
+              *
+              * _.isTypedArray(new Uint8Array);
+              * // => true
+              *
+              * _.isTypedArray([]);
+              * // => false
+              */
+
+
+             var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;
+             /**
+              * Checks if `value` is `undefined`.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
+              * @example
+              *
+              * _.isUndefined(void 0);
+              * // => true
+              *
+              * _.isUndefined(null);
+              * // => false
+              */
+
+             function isUndefined(value) {
+               return value === undefined$1;
+             }
+             /**
+              * Checks if `value` is classified as a `WeakMap` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.3.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
+              * @example
+              *
+              * _.isWeakMap(new WeakMap);
+              * // => true
+              *
+              * _.isWeakMap(new Map);
+              * // => false
+              */
+
+
+             function isWeakMap(value) {
+               return isObjectLike(value) && getTag(value) == weakMapTag;
+             }
+             /**
+              * Checks if `value` is classified as a `WeakSet` object.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.3.0
+              * @category Lang
+              * @param {*} value The value to check.
+              * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
+              * @example
+              *
+              * _.isWeakSet(new WeakSet);
+              * // => true
+              *
+              * _.isWeakSet(new Set);
+              * // => false
+              */
+
+
+             function isWeakSet(value) {
+               return isObjectLike(value) && baseGetTag(value) == weakSetTag;
+             }
+             /**
+              * Checks if `value` is less than `other`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.9.0
+              * @category Lang
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @returns {boolean} Returns `true` if `value` is less than `other`,
+              *  else `false`.
+              * @see _.gt
+              * @example
+              *
+              * _.lt(1, 3);
+              * // => true
+              *
+              * _.lt(3, 3);
+              * // => false
+              *
+              * _.lt(3, 1);
+              * // => false
+              */
+
+
+             var lt = createRelationalOperation(baseLt);
+             /**
+              * Checks if `value` is less than or equal to `other`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.9.0
+              * @category Lang
+              * @param {*} value The value to compare.
+              * @param {*} other The other value to compare.
+              * @returns {boolean} Returns `true` if `value` is less than or equal to
+              *  `other`, else `false`.
+              * @see _.gte
+              * @example
+              *
+              * _.lte(1, 3);
+              * // => true
+              *
+              * _.lte(3, 3);
+              * // => true
+              *
+              * _.lte(3, 1);
+              * // => false
+              */
+
+             var lte = createRelationalOperation(function (value, other) {
+               return value <= other;
+             });
+             /**
+              * Converts `value` to an array.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Lang
+              * @param {*} value The value to convert.
+              * @returns {Array} Returns the converted array.
+              * @example
+              *
+              * _.toArray({ 'a': 1, 'b': 2 });
+              * // => [1, 2]
+              *
+              * _.toArray('abc');
+              * // => ['a', 'b', 'c']
+              *
+              * _.toArray(1);
+              * // => []
+              *
+              * _.toArray(null);
+              * // => []
+              */
+
+             function toArray(value) {
+               if (!value) {
+                 return [];
+               }
+
+               if (isArrayLike(value)) {
+                 return isString(value) ? stringToArray(value) : copyArray(value);
+               }
+
+               if (symIterator && value[symIterator]) {
+                 return iteratorToArray(value[symIterator]());
+               }
+
+               var tag = getTag(value),
+                   func = tag == mapTag ? mapToArray : tag == setTag ? setToArray : values;
+               return func(value);
+             }
+             /**
+              * Converts `value` to a finite number.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.12.0
+              * @category Lang
+              * @param {*} value The value to convert.
+              * @returns {number} Returns the converted number.
+              * @example
+              *
+              * _.toFinite(3.2);
+              * // => 3.2
+              *
+              * _.toFinite(Number.MIN_VALUE);
+              * // => 5e-324
+              *
+              * _.toFinite(Infinity);
+              * // => 1.7976931348623157e+308
+              *
+              * _.toFinite('3.2');
+              * // => 3.2
+              */
+
+
+             function toFinite(value) {
+               if (!value) {
+                 return value === 0 ? value : 0;
+               }
+
+               value = toNumber(value);
+
+               if (value === INFINITY || value === -INFINITY) {
+                 var sign = value < 0 ? -1 : 1;
+                 return sign * MAX_INTEGER;
+               }
+
+               return value === value ? value : 0;
+             }
+             /**
+              * Converts `value` to an integer.
+              *
+              * **Note:** This method is loosely based on
+              * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to convert.
+              * @returns {number} Returns the converted integer.
+              * @example
+              *
+              * _.toInteger(3.2);
+              * // => 3
+              *
+              * _.toInteger(Number.MIN_VALUE);
+              * // => 0
+              *
+              * _.toInteger(Infinity);
+              * // => 1.7976931348623157e+308
+              *
+              * _.toInteger('3.2');
+              * // => 3
+              */
+
+
+             function toInteger(value) {
+               var result = toFinite(value),
+                   remainder = result % 1;
+               return result === result ? remainder ? result - remainder : result : 0;
+             }
+             /**
+              * Converts `value` to an integer suitable for use as the length of an
+              * array-like object.
+              *
+              * **Note:** This method is based on
+              * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to convert.
+              * @returns {number} Returns the converted integer.
+              * @example
+              *
+              * _.toLength(3.2);
+              * // => 3
+              *
+              * _.toLength(Number.MIN_VALUE);
+              * // => 0
+              *
+              * _.toLength(Infinity);
+              * // => 4294967295
+              *
+              * _.toLength('3.2');
+              * // => 3
+              */
+
+
+             function toLength(value) {
+               return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;
+             }
+             /**
+              * 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
+              */
+
+
+             function toNumber(value) {
+               if (typeof value == 'number') {
+                 return value;
+               }
+
+               if (isSymbol(value)) {
+                 return NAN;
+               }
+
+               if (isObject(value)) {
+                 var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
+                 value = isObject(other) ? other + '' : other;
+               }
+
+               if (typeof value != 'string') {
+                 return value === 0 ? value : +value;
+               }
+
+               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;
+             }
+             /**
+              * Converts `value` to a plain object flattening inherited enumerable string
+              * keyed properties of `value` to own properties of the plain object.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Lang
+              * @param {*} value The value to convert.
+              * @returns {Object} Returns the converted plain object.
+              * @example
+              *
+              * function Foo() {
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.assign({ 'a': 1 }, new Foo);
+              * // => { 'a': 1, 'b': 2 }
+              *
+              * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
+              * // => { 'a': 1, 'b': 2, 'c': 3 }
+              */
+
+
+             function toPlainObject(value) {
+               return copyObject(value, keysIn(value));
+             }
+             /**
+              * Converts `value` to a safe integer. A safe integer can be compared and
+              * represented correctly.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to convert.
+              * @returns {number} Returns the converted integer.
+              * @example
+              *
+              * _.toSafeInteger(3.2);
+              * // => 3
+              *
+              * _.toSafeInteger(Number.MIN_VALUE);
+              * // => 0
+              *
+              * _.toSafeInteger(Infinity);
+              * // => 9007199254740991
+              *
+              * _.toSafeInteger('3.2');
+              * // => 3
+              */
+
+
+             function toSafeInteger(value) {
+               return value ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER) : value === 0 ? value : 0;
+             }
+             /**
+              * Converts `value` to a string. An empty string is returned for `null`
+              * and `undefined` values. The sign of `-0` is preserved.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Lang
+              * @param {*} value The value to convert.
+              * @returns {string} Returns the converted string.
+              * @example
+              *
+              * _.toString(null);
+              * // => ''
+              *
+              * _.toString(-0);
+              * // => '-0'
+              *
+              * _.toString([1, 2, 3]);
+              * // => '1,2,3'
+              */
+
+
+             function toString(value) {
+               return value == null ? '' : baseToString(value);
+             }
+             /*------------------------------------------------------------------------*/
+
+             /**
+              * Assigns own enumerable string keyed properties of source objects to the
+              * destination object. Source objects are applied from left to right.
+              * Subsequent sources overwrite property assignments of previous sources.
+              *
+              * **Note:** This method mutates `object` and is loosely based on
+              * [`Object.assign`](https://mdn.io/Object/assign).
+              *
+              * @static
+              * @memberOf _
+              * @since 0.10.0
+              * @category Object
+              * @param {Object} object The destination object.
+              * @param {...Object} [sources] The source objects.
+              * @returns {Object} Returns `object`.
+              * @see _.assignIn
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              * }
+              *
+              * function Bar() {
+              *   this.c = 3;
+              * }
+              *
+              * Foo.prototype.b = 2;
+              * Bar.prototype.d = 4;
+              *
+              * _.assign({ 'a': 0 }, new Foo, new Bar);
+              * // => { 'a': 1, 'c': 3 }
+              */
+
+
+             var assign = createAssigner(function (object, source) {
+               if (isPrototype(source) || isArrayLike(source)) {
+                 copyObject(source, keys(source), object);
+                 return;
+               }
+
+               for (var key in source) {
+                 if (hasOwnProperty.call(source, key)) {
+                   assignValue(object, key, source[key]);
+                 }
+               }
+             });
+             /**
+              * This method is like `_.assign` except that it iterates over own and
+              * inherited source properties.
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @alias extend
+              * @category Object
+              * @param {Object} object The destination object.
+              * @param {...Object} [sources] The source objects.
+              * @returns {Object} Returns `object`.
+              * @see _.assign
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              * }
+              *
+              * function Bar() {
+              *   this.c = 3;
+              * }
+              *
+              * Foo.prototype.b = 2;
+              * Bar.prototype.d = 4;
+              *
+              * _.assignIn({ 'a': 0 }, new Foo, new Bar);
+              * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
+              */
+
+             var assignIn = createAssigner(function (object, source) {
+               copyObject(source, keysIn(source), object);
+             });
+             /**
+              * This method is like `_.assignIn` except that it accepts `customizer`
+              * which is invoked to produce the assigned values. If `customizer` returns
+              * `undefined`, assignment is handled by the method instead. The `customizer`
+              * is invoked with five arguments: (objValue, srcValue, key, object, source).
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @alias extendWith
+              * @category Object
+              * @param {Object} object The destination object.
+              * @param {...Object} sources The source objects.
+              * @param {Function} [customizer] The function to customize assigned values.
+              * @returns {Object} Returns `object`.
+              * @see _.assignWith
+              * @example
+              *
+              * function customizer(objValue, srcValue) {
+              *   return _.isUndefined(objValue) ? srcValue : objValue;
+              * }
+              *
+              * var defaults = _.partialRight(_.assignInWith, customizer);
+              *
+              * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
+              * // => { 'a': 1, 'b': 2 }
+              */
+
+             var assignInWith = createAssigner(function (object, source, srcIndex, customizer) {
+               copyObject(source, keysIn(source), object, customizer);
+             });
+             /**
+              * This method is like `_.assign` except that it accepts `customizer`
+              * which is invoked to produce the assigned values. If `customizer` returns
+              * `undefined`, assignment is handled by the method instead. The `customizer`
+              * is invoked with five arguments: (objValue, srcValue, key, object, source).
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Object
+              * @param {Object} object The destination object.
+              * @param {...Object} sources The source objects.
+              * @param {Function} [customizer] The function to customize assigned values.
+              * @returns {Object} Returns `object`.
+              * @see _.assignInWith
+              * @example
+              *
+              * function customizer(objValue, srcValue) {
+              *   return _.isUndefined(objValue) ? srcValue : objValue;
+              * }
+              *
+              * var defaults = _.partialRight(_.assignWith, customizer);
+              *
+              * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
+              * // => { 'a': 1, 'b': 2 }
+              */
+
+             var assignWith = createAssigner(function (object, source, srcIndex, customizer) {
+               copyObject(source, keys(source), object, customizer);
+             });
+             /**
+              * Creates an array of values corresponding to `paths` of `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 1.0.0
+              * @category Object
+              * @param {Object} object The object to iterate over.
+              * @param {...(string|string[])} [paths] The property paths to pick.
+              * @returns {Array} Returns the picked values.
+              * @example
+              *
+              * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
+              *
+              * _.at(object, ['a[0].b.c', 'a[1]']);
+              * // => [3, 4]
+              */
+
+             var at = flatRest(baseAt);
+             /**
+              * Creates an object that inherits from the `prototype` object. If a
+              * `properties` object is given, its own enumerable string keyed properties
+              * are assigned to the created object.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.3.0
+              * @category Object
+              * @param {Object} prototype The object to inherit from.
+              * @param {Object} [properties] The properties to assign to the object.
+              * @returns {Object} Returns the new object.
+              * @example
+              *
+              * function Shape() {
+              *   this.x = 0;
+              *   this.y = 0;
+              * }
+              *
+              * function Circle() {
+              *   Shape.call(this);
+              * }
+              *
+              * Circle.prototype = _.create(Shape.prototype, {
+              *   'constructor': Circle
+              * });
+              *
+              * var circle = new Circle;
+              * circle instanceof Circle;
+              * // => true
+              *
+              * circle instanceof Shape;
+              * // => true
+              */
+
+             function create(prototype, properties) {
+               var result = baseCreate(prototype);
+               return properties == null ? result : baseAssign(result, properties);
+             }
+             /**
+              * Assigns own and inherited enumerable string keyed properties of source
+              * objects to the destination object for all destination properties that
+              * resolve to `undefined`. Source objects are applied from left to right.
+              * Once a property is set, additional values of the same property are ignored.
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Object
+              * @param {Object} object The destination object.
+              * @param {...Object} [sources] The source objects.
+              * @returns {Object} Returns `object`.
+              * @see _.defaultsDeep
+              * @example
+              *
+              * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
+              * // => { 'a': 1, 'b': 2 }
+              */
+
+
+             var defaults = baseRest(function (object, sources) {
+               object = Object(object);
+               var index = -1;
+               var length = sources.length;
+               var guard = length > 2 ? sources[2] : undefined$1;
+
+               if (guard && isIterateeCall(sources[0], sources[1], guard)) {
+                 length = 1;
+               }
+
+               while (++index < length) {
+                 var source = sources[index];
+                 var props = keysIn(source);
+                 var propsIndex = -1;
+                 var propsLength = props.length;
+
+                 while (++propsIndex < propsLength) {
+                   var key = props[propsIndex];
+                   var value = object[key];
+
+                   if (value === undefined$1 || eq(value, objectProto[key]) && !hasOwnProperty.call(object, key)) {
+                     object[key] = source[key];
+                   }
+                 }
+               }
+
+               return object;
+             });
+             /**
+              * This method is like `_.defaults` except that it recursively assigns
+              * default properties.
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.10.0
+              * @category Object
+              * @param {Object} object The destination object.
+              * @param {...Object} [sources] The source objects.
+              * @returns {Object} Returns `object`.
+              * @see _.defaults
+              * @example
+              *
+              * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
+              * // => { 'a': { 'b': 2, 'c': 3 } }
+              */
+
+             var defaultsDeep = baseRest(function (args) {
+               args.push(undefined$1, customDefaultsMerge);
+               return apply(mergeWith, undefined$1, args);
+             });
+             /**
+              * This method is like `_.find` except that it returns the key of the first
+              * element `predicate` returns truthy for instead of the element itself.
+              *
+              * @static
+              * @memberOf _
+              * @since 1.1.0
+              * @category Object
+              * @param {Object} object The object to inspect.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {string|undefined} Returns the key of the matched element,
+              *  else `undefined`.
+              * @example
+              *
+              * var users = {
+              *   'barney':  { 'age': 36, 'active': true },
+              *   'fred':    { 'age': 40, 'active': false },
+              *   'pebbles': { 'age': 1,  'active': true }
+              * };
+              *
+              * _.findKey(users, function(o) { return o.age < 40; });
+              * // => 'barney' (iteration order is not guaranteed)
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.findKey(users, { 'age': 1, 'active': true });
+              * // => 'pebbles'
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.findKey(users, ['active', false]);
+              * // => 'fred'
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.findKey(users, 'active');
+              * // => 'barney'
+              */
+
+             function findKey(object, predicate) {
+               return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);
+             }
+             /**
+              * This method is like `_.findKey` except that it iterates over elements of
+              * a collection in the opposite order.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @category Object
+              * @param {Object} object The object to inspect.
+              * @param {Function} [predicate=_.identity] The function invoked per iteration.
+              * @returns {string|undefined} Returns the key of the matched element,
+              *  else `undefined`.
+              * @example
+              *
+              * var users = {
+              *   'barney':  { 'age': 36, 'active': true },
+              *   'fred':    { 'age': 40, 'active': false },
+              *   'pebbles': { 'age': 1,  'active': true }
+              * };
+              *
+              * _.findLastKey(users, function(o) { return o.age < 40; });
+              * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.findLastKey(users, { 'age': 36, 'active': true });
+              * // => 'barney'
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.findLastKey(users, ['active', false]);
+              * // => 'fred'
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.findLastKey(users, 'active');
+              * // => 'pebbles'
+              */
+
+
+             function findLastKey(object, predicate) {
+               return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);
+             }
+             /**
+              * Iterates over own and inherited enumerable string keyed properties of an
+              * object and invokes `iteratee` for each property. The iteratee is invoked
+              * with three arguments: (value, key, object). Iteratee functions may exit
+              * iteration early by explicitly returning `false`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.3.0
+              * @category Object
+              * @param {Object} object The object to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Object} Returns `object`.
+              * @see _.forInRight
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.forIn(new Foo, function(value, key) {
+              *   console.log(key);
+              * });
+              * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
+              */
+
+
+             function forIn(object, iteratee) {
+               return object == null ? object : baseFor(object, getIteratee(iteratee, 3), keysIn);
+             }
+             /**
+              * This method is like `_.forIn` except that it iterates over properties of
+              * `object` in the opposite order.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @category Object
+              * @param {Object} object The object to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Object} Returns `object`.
+              * @see _.forIn
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.forInRight(new Foo, function(value, key) {
+              *   console.log(key);
+              * });
+              * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
+              */
+
+
+             function forInRight(object, iteratee) {
+               return object == null ? object : baseForRight(object, getIteratee(iteratee, 3), keysIn);
+             }
+             /**
+              * Iterates over own enumerable string keyed properties of an object and
+              * invokes `iteratee` for each property. The iteratee is invoked with three
+              * arguments: (value, key, object). Iteratee functions may exit iteration
+              * early by explicitly returning `false`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.3.0
+              * @category Object
+              * @param {Object} object The object to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Object} Returns `object`.
+              * @see _.forOwnRight
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.forOwn(new Foo, function(value, key) {
+              *   console.log(key);
+              * });
+              * // => Logs 'a' then 'b' (iteration order is not guaranteed).
+              */
+
+
+             function forOwn(object, iteratee) {
+               return object && baseForOwn(object, getIteratee(iteratee, 3));
+             }
+             /**
+              * This method is like `_.forOwn` except that it iterates over properties of
+              * `object` in the opposite order.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.0.0
+              * @category Object
+              * @param {Object} object The object to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Object} Returns `object`.
+              * @see _.forOwn
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.forOwnRight(new Foo, function(value, key) {
+              *   console.log(key);
+              * });
+              * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
+              */
+
+
+             function forOwnRight(object, iteratee) {
+               return object && baseForOwnRight(object, getIteratee(iteratee, 3));
+             }
+             /**
+              * Creates an array of function property names from own enumerable properties
+              * of `object`.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Object
+              * @param {Object} object The object to inspect.
+              * @returns {Array} Returns the function names.
+              * @see _.functionsIn
+              * @example
+              *
+              * function Foo() {
+              *   this.a = _.constant('a');
+              *   this.b = _.constant('b');
+              * }
+              *
+              * Foo.prototype.c = _.constant('c');
+              *
+              * _.functions(new Foo);
+              * // => ['a', 'b']
+              */
+
+
+             function functions(object) {
+               return object == null ? [] : baseFunctions(object, keys(object));
+             }
+             /**
+              * Creates an array of function property names from own and inherited
+              * enumerable properties of `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Object
+              * @param {Object} object The object to inspect.
+              * @returns {Array} Returns the function names.
+              * @see _.functions
+              * @example
+              *
+              * function Foo() {
+              *   this.a = _.constant('a');
+              *   this.b = _.constant('b');
+              * }
+              *
+              * Foo.prototype.c = _.constant('c');
+              *
+              * _.functionsIn(new Foo);
+              * // => ['a', 'b', 'c']
+              */
+
+
+             function functionsIn(object) {
+               return object == null ? [] : baseFunctions(object, keysIn(object));
+             }
+             /**
+              * Gets the value at `path` of `object`. If the resolved value is
+              * `undefined`, the `defaultValue` is returned in its place.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.7.0
+              * @category Object
+              * @param {Object} object The object to query.
+              * @param {Array|string} path The path of the property to get.
+              * @param {*} [defaultValue] The value returned for `undefined` resolved values.
+              * @returns {*} Returns the resolved value.
+              * @example
+              *
+              * var object = { 'a': [{ 'b': { 'c': 3 } }] };
+              *
+              * _.get(object, 'a[0].b.c');
+              * // => 3
+              *
+              * _.get(object, ['a', '0', 'b', 'c']);
+              * // => 3
+              *
+              * _.get(object, 'a.b.c', 'default');
+              * // => 'default'
+              */
+
+
+             function get(object, path, defaultValue) {
+               var result = object == null ? undefined$1 : baseGet(object, path);
+               return result === undefined$1 ? defaultValue : result;
+             }
+             /**
+              * Checks if `path` is a direct property of `object`.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Object
+              * @param {Object} object The object to query.
+              * @param {Array|string} path The path to check.
+              * @returns {boolean} Returns `true` if `path` exists, else `false`.
+              * @example
+              *
+              * var object = { 'a': { 'b': 2 } };
+              * var other = _.create({ 'a': _.create({ 'b': 2 }) });
+              *
+              * _.has(object, 'a');
+              * // => true
+              *
+              * _.has(object, 'a.b');
+              * // => true
+              *
+              * _.has(object, ['a', 'b']);
+              * // => true
+              *
+              * _.has(other, 'a');
+              * // => false
+              */
+
+
+             function has(object, path) {
+               return object != null && hasPath(object, path, baseHas);
+             }
+             /**
+              * Checks if `path` is a direct or inherited property of `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Object
+              * @param {Object} object The object to query.
+              * @param {Array|string} path The path to check.
+              * @returns {boolean} Returns `true` if `path` exists, else `false`.
+              * @example
+              *
+              * var object = _.create({ 'a': _.create({ 'b': 2 }) });
+              *
+              * _.hasIn(object, 'a');
+              * // => true
+              *
+              * _.hasIn(object, 'a.b');
+              * // => true
+              *
+              * _.hasIn(object, ['a', 'b']);
+              * // => true
+              *
+              * _.hasIn(object, 'b');
+              * // => false
+              */
+
+
+             function hasIn(object, path) {
+               return object != null && hasPath(object, path, baseHasIn);
+             }
+             /**
+              * Creates an object composed of the inverted keys and values of `object`.
+              * If `object` contains duplicate values, subsequent values overwrite
+              * property assignments of previous values.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.7.0
+              * @category Object
+              * @param {Object} object The object to invert.
+              * @returns {Object} Returns the new inverted object.
+              * @example
+              *
+              * var object = { 'a': 1, 'b': 2, 'c': 1 };
+              *
+              * _.invert(object);
+              * // => { '1': 'c', '2': 'b' }
+              */
+
+
+             var invert = createInverter(function (result, value, key) {
+               if (value != null && typeof value.toString != 'function') {
+                 value = nativeObjectToString.call(value);
+               }
+
+               result[value] = key;
+             }, constant(identity));
+             /**
+              * This method is like `_.invert` except that the inverted object is generated
+              * from the results of running each element of `object` thru `iteratee`. The
+              * corresponding inverted value of each inverted key is an array of keys
+              * responsible for generating the inverted value. The iteratee is invoked
+              * with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.1.0
+              * @category Object
+              * @param {Object} object The object to invert.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {Object} Returns the new inverted object.
+              * @example
+              *
+              * var object = { 'a': 1, 'b': 2, 'c': 1 };
+              *
+              * _.invertBy(object);
+              * // => { '1': ['a', 'c'], '2': ['b'] }
+              *
+              * _.invertBy(object, function(value) {
+              *   return 'group' + value;
+              * });
+              * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
+              */
+
+             var invertBy = createInverter(function (result, value, key) {
+               if (value != null && typeof value.toString != 'function') {
+                 value = nativeObjectToString.call(value);
+               }
+
+               if (hasOwnProperty.call(result, value)) {
+                 result[value].push(key);
+               } else {
+                 result[value] = [key];
+               }
+             }, getIteratee);
+             /**
+              * Invokes the method at `path` of `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Object
+              * @param {Object} object The object to query.
+              * @param {Array|string} path The path of the method to invoke.
+              * @param {...*} [args] The arguments to invoke the method with.
+              * @returns {*} Returns the result of the invoked method.
+              * @example
+              *
+              * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
+              *
+              * _.invoke(object, 'a[0].b.c.slice', 1, 3);
+              * // => [2, 3]
+              */
+
+             var invoke = baseRest(baseInvoke);
+             /**
+              * Creates an array of the own enumerable property names of `object`.
+              *
+              * **Note:** Non-object values are coerced to objects. See the
+              * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
+              * for more details.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Object
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of property names.
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.keys(new Foo);
+              * // => ['a', 'b'] (iteration order is not guaranteed)
+              *
+              * _.keys('hi');
+              * // => ['0', '1']
+              */
+
+             function keys(object) {
+               return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
+             }
+             /**
+              * Creates an array of the own and inherited enumerable property names of `object`.
+              *
+              * **Note:** Non-object values are coerced to objects.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Object
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of property names.
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.keysIn(new Foo);
+              * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
+              */
+
 
-               if (geoPolygonIntersectsPolygon(outer, inner, false)) {
-                 return o;
-               }
+             function keysIn(object) {
+               return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
              }
-           }
+             /**
+              * The opposite of `_.mapValues`; this method creates an object with the
+              * same values as `object` and keys generated by running each own enumerable
+              * string keyed property of `object` thru `iteratee`. The iteratee is invoked
+              * with three arguments: (value, key, object).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.8.0
+              * @category Object
+              * @param {Object} object The object to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Object} Returns the new mapped object.
+              * @see _.mapValues
+              * @example
+              *
+              * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
+              *   return key + value;
+              * });
+              * // => { 'a1': 1, 'b2': 2 }
+              */
 
-           for (var i = 0; i < inners.length; i++) {
-             var inner = inners[i];
 
-             if (d3_geoArea({
-               type: 'Polygon',
-               coordinates: [inner]
-             }) < 2 * Math.PI) {
-               inner = inner.reverse();
+             function mapKeys(object, iteratee) {
+               var result = {};
+               iteratee = getIteratee(iteratee, 3);
+               baseForOwn(object, function (value, key, object) {
+                 baseAssignValue(result, iteratee(value, key, object), value);
+               });
+               return result;
              }
+             /**
+              * Creates an object with the same keys as `object` and values generated
+              * by running each own enumerable string keyed property of `object` thru
+              * `iteratee`. The iteratee is invoked with three arguments:
+              * (value, key, object).
+              *
+              * @static
+              * @memberOf _
+              * @since 2.4.0
+              * @category Object
+              * @param {Object} object The object to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Object} Returns the new mapped object.
+              * @see _.mapKeys
+              * @example
+              *
+              * var users = {
+              *   'fred':    { 'user': 'fred',    'age': 40 },
+              *   'pebbles': { 'user': 'pebbles', 'age': 1 }
+              * };
+              *
+              * _.mapValues(users, function(o) { return o.age; });
+              * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.mapValues(users, 'age');
+              * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
+              */
 
-             var o = findOuter(inners[i]);
 
-             if (o !== undefined) {
-               result[o].push(inners[i]);
-             } else {
-               result.push([inners[i]]); // Invalid geometry
+             function mapValues(object, iteratee) {
+               var result = {};
+               iteratee = getIteratee(iteratee, 3);
+               baseForOwn(object, function (value, key, object) {
+                 baseAssignValue(result, key, iteratee(value, key, object));
+               });
+               return result;
              }
-           }
-
-           return result;
-         }
-       });
+             /**
+              * This method is like `_.assign` except that it recursively merges own and
+              * inherited enumerable string keyed properties of source objects into the
+              * destination object. Source properties that resolve to `undefined` are
+              * skipped if a destination value exists. Array and plain object properties
+              * are merged recursively. Other objects and value types are overridden by
+              * assignment. Source objects are applied from left to right. Subsequent
+              * sources overwrite property assignments of previous sources.
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.5.0
+              * @category Object
+              * @param {Object} object The destination object.
+              * @param {...Object} [sources] The source objects.
+              * @returns {Object} Returns `object`.
+              * @example
+              *
+              * var object = {
+              *   'a': [{ 'b': 2 }, { 'd': 4 }]
+              * };
+              *
+              * var other = {
+              *   'a': [{ 'c': 3 }, { 'e': 5 }]
+              * };
+              *
+              * _.merge(object, other);
+              * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
+              */
 
-       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
+             var merge = createAssigner(function (object, source, srcIndex) {
+               baseMerge(object, source, srcIndex);
+             });
+             /**
+              * This method is like `_.merge` except that it accepts `customizer` which
+              * is invoked to produce the merged values of the destination and source
+              * properties. If `customizer` returns `undefined`, merging is handled by the
+              * method instead. The `customizer` is invoked with six arguments:
+              * (objValue, srcValue, key, object, source, stack).
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Object
+              * @param {Object} object The destination object.
+              * @param {...Object} sources The source objects.
+              * @param {Function} customizer The function to customize assigned values.
+              * @returns {Object} Returns `object`.
+              * @example
+              *
+              * function customizer(objValue, srcValue) {
+              *   if (_.isArray(objValue)) {
+              *     return objValue.concat(srcValue);
+              *   }
+              * }
+              *
+              * var object = { 'a': [1], 'b': [2] };
+              * var other = { 'a': [3], 'b': [4] };
+              *
+              * _.mergeWith(object, other, customizer);
+              * // => { 'a': [1, 3], 'b': [2, 4] }
+              */
 
-           this.id = id ? id : "".concat(QAItem.id());
-           this.update(props); // Some QA services have marker icons to differentiate issues
+             var mergeWith = createAssigner(function (object, source, srcIndex, customizer) {
+               baseMerge(object, source, srcIndex, customizer);
+             });
+             /**
+              * The opposite of `_.pick`; this method creates an object composed of the
+              * own and inherited enumerable property paths of `object` that are not omitted.
+              *
+              * **Note:** This method is considerably slower than `_.pick`.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Object
+              * @param {Object} object The source object.
+              * @param {...(string|string[])} [paths] The property paths to omit.
+              * @returns {Object} Returns the new object.
+              * @example
+              *
+              * var object = { 'a': 1, 'b': '2', 'c': 3 };
+              *
+              * _.omit(object, ['a', 'c']);
+              * // => { 'b': '2' }
+              */
 
-           if (service && typeof service.getIcon === 'function') {
-             this.icon = service.getIcon(itemType);
-           }
-         }
+             var omit = flatRest(function (object, paths) {
+               var result = {};
 
-         _createClass$1(QAItem, [{
-           key: "update",
-           value: function update(props) {
-             var _this = this;
+               if (object == null) {
+                 return result;
+               }
 
-             // 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
+               var isDeep = false;
+               paths = arrayMap(paths, function (path) {
+                 path = castPath(path, object);
+                 isDeep || (isDeep = path.length > 1);
+                 return path;
+               });
+               copyObject(object, getAllKeysIn(object), result);
 
-         }], [{
-           key: "id",
-           value: function id() {
-             return this.nextId--;
-           }
-         }]);
+               if (isDeep) {
+                 result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);
+               }
 
-         return QAItem;
-       }();
-       QAItem.nextId = -1;
+               var length = paths.length;
 
-       //
-       // 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
-       //
+               while (length--) {
+                 baseUnset(result, paths[length]);
+               }
 
-       function actionSplit(nodeIds, newWayIds) {
-         // accept single ID for backwards-compatiblity
-         if (typeof nodeIds === 'string') nodeIds = [nodeIds];
+               return result;
+             });
+             /**
+              * The opposite of `_.pickBy`; this method creates an object composed of
+              * the own and inherited enumerable string keyed properties of `object` that
+              * `predicate` doesn't return truthy for. The predicate is invoked with two
+              * arguments: (value, key).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Object
+              * @param {Object} object The source object.
+              * @param {Function} [predicate=_.identity] The function invoked per property.
+              * @returns {Object} Returns the new object.
+              * @example
+              *
+              * var object = { 'a': 1, 'b': '2', 'c': 3 };
+              *
+              * _.omitBy(object, _.isNumber);
+              * // => { 'b': '2' }
+              */
 
-         var _wayIDs; // the strategy for picking which way will have a new version and which way is newly created
+             function omitBy(object, predicate) {
+               return pickBy(object, negate(getIteratee(predicate)));
+             }
+             /**
+              * Creates an object composed of the picked `object` properties.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Object
+              * @param {Object} object The source object.
+              * @param {...(string|string[])} [paths] The property paths to pick.
+              * @returns {Object} Returns the new object.
+              * @example
+              *
+              * var object = { 'a': 1, 'b': '2', 'c': 3 };
+              *
+              * _.pick(object, ['a', 'c']);
+              * // => { 'a': 1, 'c': 3 }
+              */
 
 
-         var _keepHistoryOn = 'longest'; // 'longest', 'first'
-         // The IDs of the ways actually created by running this action
+             var pick = flatRest(function (object, paths) {
+               return object == null ? {} : basePick(object, paths);
+             });
+             /**
+              * Creates an object composed of the `object` properties `predicate` returns
+              * truthy for. The predicate is invoked with two arguments: (value, key).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Object
+              * @param {Object} object The source object.
+              * @param {Function} [predicate=_.identity] The function invoked per property.
+              * @returns {Object} Returns the new object.
+              * @example
+              *
+              * var object = { 'a': 1, 'b': '2', 'c': 3 };
+              *
+              * _.pickBy(object, _.isNumber);
+              * // => { 'a': 1, 'c': 3 }
+              */
 
-         var _createdWayIDs = [];
+             function pickBy(object, predicate) {
+               if (object == null) {
+                 return {};
+               }
 
-         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.
+               var props = arrayMap(getAllKeysIn(object), function (prop) {
+                 return [prop];
+               });
+               predicate = getIteratee(predicate);
+               return basePickBy(object, props, function (value, path) {
+                 return predicate(value, path[0]);
+               });
+             }
+             /**
+              * This method is like `_.get` except that if the resolved value is a
+              * function it's invoked with the `this` binding of its parent object and
+              * its result is returned.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Object
+              * @param {Object} object The object to query.
+              * @param {Array|string} path The path of the property to resolve.
+              * @param {*} [defaultValue] The value returned for `undefined` resolved values.
+              * @returns {*} Returns the resolved value.
+              * @example
+              *
+              * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
+              *
+              * _.result(object, 'a[0].b.c1');
+              * // => 3
+              *
+              * _.result(object, 'a[0].b.c2');
+              * // => 4
+              *
+              * _.result(object, 'a[0].b.c3', 'default');
+              * // => 'default'
+              *
+              * _.result(object, 'a[0].b.c3', _.constant('default'));
+              * // => 'default'
+              */
 
 
-         function splitArea(nodes, idxA, graph) {
-           var lengths = new Array(nodes.length);
-           var length;
-           var i;
-           var best = 0;
-           var idxB;
+             function result(object, path, defaultValue) {
+               path = castPath(path, object);
+               var index = -1,
+                   length = path.length; // Ensure the loop is entered when path is empty.
 
-           function wrap(index) {
-             return utilWrap(index, nodes.length);
-           } // calculate lengths
+               if (!length) {
+                 length = 1;
+                 object = undefined$1;
+               }
 
+               while (++index < length) {
+                 var value = object == null ? undefined$1 : object[toKey(path[index])];
 
-           length = 0;
+                 if (value === undefined$1) {
+                   index = length;
+                   value = defaultValue;
+                 }
 
-           for (i = wrap(idxA + 1); i !== idxA; i = wrap(i + 1)) {
-             length += dist(graph, nodes[i], nodes[wrap(i - 1)]);
-             lengths[i] = length;
-           }
+                 object = isFunction(value) ? value.call(object) : value;
+               }
 
-           length = 0;
+               return object;
+             }
+             /**
+              * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
+              * it's created. Arrays are created for missing index properties while objects
+              * are created for all other missing properties. Use `_.setWith` to customize
+              * `path` creation.
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.7.0
+              * @category Object
+              * @param {Object} object The object to modify.
+              * @param {Array|string} path The path of the property to set.
+              * @param {*} value The value to set.
+              * @returns {Object} Returns `object`.
+              * @example
+              *
+              * var object = { 'a': [{ 'b': { 'c': 3 } }] };
+              *
+              * _.set(object, 'a[0].b.c', 4);
+              * console.log(object.a[0].b.c);
+              * // => 4
+              *
+              * _.set(object, ['x', '0', 'y', 'z'], 5);
+              * console.log(object.x[0].y.z);
+              * // => 5
+              */
 
-           for (i = wrap(idxA - 1); i !== idxA; i = wrap(i - 1)) {
-             length += dist(graph, nodes[i], nodes[wrap(i + 1)]);
 
-             if (length < lengths[i]) {
-               lengths[i] = length;
+             function set(object, path, value) {
+               return object == null ? object : baseSet(object, path, value);
              }
-           } // determine best opposite node to split
-
+             /**
+              * This method is like `_.set` except that it accepts `customizer` which is
+              * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
+              * path creation is handled by the method instead. The `customizer` is invoked
+              * with three arguments: (nsValue, key, nsObject).
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Object
+              * @param {Object} object The object to modify.
+              * @param {Array|string} path The path of the property to set.
+              * @param {*} value The value to set.
+              * @param {Function} [customizer] The function to customize assigned values.
+              * @returns {Object} Returns `object`.
+              * @example
+              *
+              * var object = {};
+              *
+              * _.setWith(object, '[0][1]', 'a', Object);
+              * // => { '0': { '1': 'a' } }
+              */
 
-           for (i = 0; i < nodes.length; i++) {
-             var cost = lengths[i] / dist(graph, nodes[idxA], nodes[i]);
 
-             if (cost > best) {
-               idxB = i;
-               best = cost;
+             function setWith(object, path, value, customizer) {
+               customizer = typeof customizer == 'function' ? customizer : undefined$1;
+               return object == null ? object : baseSet(object, path, value, customizer);
              }
-           }
-
-           return idxB;
-         }
+             /**
+              * Creates an array of own enumerable string keyed-value pairs for `object`
+              * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
+              * entries are returned.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @alias entries
+              * @category Object
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the key-value pairs.
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.toPairs(new Foo);
+              * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
+              */
 
-         function totalLengthBetweenNodes(graph, nodes) {
-           var totalLength = 0;
 
-           for (var i = 0; i < nodes.length - 1; i++) {
-             totalLength += dist(graph, nodes[i], nodes[i + 1]);
-           }
+             var toPairs = createToPairs(keys);
+             /**
+              * Creates an array of own and inherited enumerable string keyed-value pairs
+              * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
+              * or set, its entries are returned.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @alias entriesIn
+              * @category Object
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the key-value pairs.
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.toPairsIn(new Foo);
+              * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
+              */
 
-           return totalLength;
-         }
+             var toPairsIn = createToPairs(keysIn);
+             /**
+              * An alternative to `_.reduce`; this method transforms `object` to a new
+              * `accumulator` object which is the result of running each of its own
+              * enumerable string keyed properties thru `iteratee`, with each invocation
+              * potentially mutating the `accumulator` object. If `accumulator` is not
+              * provided, a new object with the same `[[Prototype]]` will be used. The
+              * iteratee is invoked with four arguments: (accumulator, value, key, object).
+              * Iteratee functions may exit iteration early by explicitly returning `false`.
+              *
+              * @static
+              * @memberOf _
+              * @since 1.3.0
+              * @category Object
+              * @param {Object} object The object to iterate over.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @param {*} [accumulator] The custom accumulator value.
+              * @returns {*} Returns the accumulated value.
+              * @example
+              *
+              * _.transform([2, 3, 4], function(result, n) {
+              *   result.push(n *= n);
+              *   return n % 2 == 0;
+              * }, []);
+              * // => [4, 9]
+              *
+              * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
+              *   (result[value] || (result[value] = [])).push(key);
+              * }, {});
+              * // => { '1': ['a', 'c'], '2': ['b'] }
+              */
 
-         function split(graph, nodeId, wayA, newWayId) {
-           var wayB = osmWay({
-             id: newWayId,
-             tags: wayA.tags
-           }); // `wayB` is the NEW way
+             function transform(object, iteratee, accumulator) {
+               var isArr = isArray(object),
+                   isArrLike = isArr || isBuffer(object) || isTypedArray(object);
+               iteratee = getIteratee(iteratee, 4);
 
-           var origNodes = wayA.nodes.slice();
-           var nodesA;
-           var nodesB;
-           var isArea = wayA.isArea();
-           var isOuter = osmIsOldMultipolygonOuterMember(wayA, graph);
+               if (accumulator == null) {
+                 var Ctor = object && object.constructor;
 
-           if (wayA.isClosed()) {
-             var nodes = wayA.nodes.slice(0, -1);
-             var idxA = nodes.indexOf(nodeId);
-             var idxB = splitArea(nodes, idxA, graph);
+                 if (isArrLike) {
+                   accumulator = isArr ? new Ctor() : [];
+                 } else if (isObject(object)) {
+                   accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
+                 } else {
+                   accumulator = {};
+                 }
+               }
 
-             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));
+               (isArrLike ? arrayEach : baseForOwn)(object, function (value, index, object) {
+                 return iteratee(accumulator, value, index, object);
+               });
+               return accumulator;
              }
-           } else {
-             var idx = wayA.nodes.indexOf(nodeId, 1);
-             nodesA = wayA.nodes.slice(0, idx + 1);
-             nodesB = wayA.nodes.slice(idx);
-           }
+             /**
+              * Removes the property at `path` of `object`.
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Object
+              * @param {Object} object The object to modify.
+              * @param {Array|string} path The path of the property to unset.
+              * @returns {boolean} Returns `true` if the property is deleted, else `false`.
+              * @example
+              *
+              * var object = { 'a': [{ 'b': { 'c': 7 } }] };
+              * _.unset(object, 'a[0].b.c');
+              * // => true
+              *
+              * console.log(object);
+              * // => { 'a': [{ 'b': {} }] };
+              *
+              * _.unset(object, ['a', '0', 'b', 'c']);
+              * // => true
+              *
+              * console.log(object);
+              * // => { 'a': [{ 'b': {} }] };
+              */
 
-           var lengthA = totalLengthBetweenNodes(graph, nodesA);
-           var lengthB = totalLengthBetweenNodes(graph, nodesB);
 
-           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
-             });
-           }
+             function unset(object, path) {
+               return object == null ? true : baseUnset(object, path);
+             }
+             /**
+              * This method is like `_.set` except that accepts `updater` to produce the
+              * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
+              * is invoked with one argument: (value).
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.6.0
+              * @category Object
+              * @param {Object} object The object to modify.
+              * @param {Array|string} path The path of the property to set.
+              * @param {Function} updater The function to produce the updated value.
+              * @returns {Object} Returns `object`.
+              * @example
+              *
+              * var object = { 'a': [{ 'b': { 'c': 3 } }] };
+              *
+              * _.update(object, 'a[0].b.c', function(n) { return n * n; });
+              * console.log(object.a[0].b.c);
+              * // => 9
+              *
+              * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
+              * console.log(object.x[0].y.z);
+              * // => 0
+              */
 
-           if (wayA.tags.step_count) {
-             // divide up the the step count proportionally between the two ways
-             var stepCount = parseFloat(wayA.tags.step_count);
 
-             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
-               });
+             function update(object, path, updater) {
+               return object == null ? object : baseUpdate(object, path, castFunction(updater));
              }
-           }
+             /**
+              * This method is like `_.update` except that it accepts `customizer` which is
+              * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
+              * path creation is handled by the method instead. The `customizer` is invoked
+              * with three arguments: (nsValue, key, nsObject).
+              *
+              * **Note:** This method mutates `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.6.0
+              * @category Object
+              * @param {Object} object The object to modify.
+              * @param {Array|string} path The path of the property to set.
+              * @param {Function} updater The function to produce the updated value.
+              * @param {Function} [customizer] The function to customize assigned values.
+              * @returns {Object} Returns `object`.
+              * @example
+              *
+              * var object = {};
+              *
+              * _.updateWith(object, '[0][1]', _.constant('a'), Object);
+              * // => { '0': { '1': 'a' } }
+              */
 
-           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
 
-             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
+             function updateWith(object, path, updater, customizer) {
+               customizer = typeof customizer == 'function' ? customizer : undefined$1;
+               return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
+             }
+             /**
+              * Creates an array of the own enumerable string keyed property values of `object`.
+              *
+              * **Note:** Non-object values are coerced to objects.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Object
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of property values.
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.values(new Foo);
+              * // => [1, 2] (iteration order is not guaranteed)
+              *
+              * _.values('hi');
+              * // => ['h', 'i']
+              */
 
-               if (f.id === wayA.id || t.id === wayA.id) {
-                 var keepB = false;
 
-                 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);
+             function values(object) {
+               return object == null ? [] : baseValues(object, keys(object));
+             }
+             /**
+              * Creates an array of the own and inherited enumerable string keyed property
+              * values of `object`.
+              *
+              * **Note:** Non-object values are coerced to objects.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Object
+              * @param {Object} object The object to query.
+              * @returns {Array} Returns the array of property values.
+              * @example
+              *
+              * function Foo() {
+              *   this.a = 1;
+              *   this.b = 2;
+              * }
+              *
+              * Foo.prototype.c = 3;
+              *
+              * _.valuesIn(new Foo);
+              * // => [1, 2, 3] (iteration order is not guaranteed)
+              */
 
-                       if (wayVia && utilArrayIntersection(wayB.nodes, wayVia.nodes).length) {
-                         keepB = true;
-                         break;
-                       }
-                     }
-                   }
-                 }
 
-                 if (keepB) {
-                   relation = relation.replaceMember(wayA, wayB);
-                   graph = graph.replace(relation);
-                 } // 2. split a VIA
+             function valuesIn(object) {
+               return object == null ? [] : baseValues(object, keysIn(object));
+             }
+             /*------------------------------------------------------------------------*/
 
-               } 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)
+             /**
+              * Clamps `number` within the inclusive `lower` and `upper` bounds.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Number
+              * @param {number} number The number to clamp.
+              * @param {number} [lower] The lower bound.
+              * @param {number} upper The upper bound.
+              * @returns {number} Returns the clamped number.
+              * @example
+              *
+              * _.clamp(-10, -5, 5);
+              * // => -5
+              *
+              * _.clamp(10, -5, 5);
+              * // => 5
+              */
 
-             } else {
-               if (relation === isOuter) {
-                 graph = graph.replace(relation.mergeTags(wayA.tags));
-                 graph = graph.replace(wayA.update({
-                   tags: {}
-                 }));
-                 graph = graph.replace(wayB.update({
-                   tags: {}
-                 }));
+
+             function clamp(number, lower, upper) {
+               if (upper === undefined$1) {
+                 upper = lower;
+                 lower = undefined$1;
                }
 
-               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 (upper !== undefined$1) {
+                 upper = toNumber(upper);
+                 upper = upper === upper ? upper : 0;
+               }
 
-           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: {}
-             }));
-           }
+               if (lower !== undefined$1) {
+                 lower = toNumber(lower);
+                 lower = lower === lower ? lower : 0;
+               }
 
-           _createdWayIDs.push(wayB.id);
+               return baseClamp(toNumber(number), lower, upper);
+             }
+             /**
+              * Checks if `n` is between `start` and up to, but not including, `end`. If
+              * `end` is not specified, it's set to `start` with `start` then set to `0`.
+              * If `start` is greater than `end` the params are swapped to support
+              * negative ranges.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.3.0
+              * @category Number
+              * @param {number} number The number to check.
+              * @param {number} [start=0] The start of the range.
+              * @param {number} end The end of the range.
+              * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
+              * @see _.range, _.rangeRight
+              * @example
+              *
+              * _.inRange(3, 2, 4);
+              * // => true
+              *
+              * _.inRange(4, 8);
+              * // => true
+              *
+              * _.inRange(4, 2);
+              * // => false
+              *
+              * _.inRange(2, 2);
+              * // => false
+              *
+              * _.inRange(1.2, 2);
+              * // => true
+              *
+              * _.inRange(5.2, 4);
+              * // => false
+              *
+              * _.inRange(-3, -2, -6);
+              * // => true
+              */
 
-           return graph;
-         }
 
-         var action = function action(graph) {
-           _createdWayIDs = [];
-           var newWayIndex = 0;
+             function inRange(number, start, end) {
+               start = toFinite(start);
 
-           for (var i = 0; i < nodeIds.length; i++) {
-             var nodeId = nodeIds[i];
-             var candidates = action.waysForNode(nodeId, graph);
+               if (end === undefined$1) {
+                 end = start;
+                 start = 0;
+               } else {
+                 end = toFinite(end);
+               }
 
-             for (var j = 0; j < candidates.length; j++) {
-               graph = split(graph, nodeId, candidates[j], newWayIds && newWayIds[newWayIndex]);
-               newWayIndex += 1;
+               number = toNumber(number);
+               return baseInRange(number, start, end);
              }
-           }
-
-           return graph;
-         };
+             /**
+              * Produces a random number between the inclusive `lower` and `upper` bounds.
+              * If only one argument is provided a number between `0` and the given number
+              * is returned. If `floating` is `true`, or either `lower` or `upper` are
+              * floats, a floating-point number is returned instead of an integer.
+              *
+              * **Note:** JavaScript follows the IEEE-754 standard for resolving
+              * floating-point values which can produce unexpected results.
+              *
+              * @static
+              * @memberOf _
+              * @since 0.7.0
+              * @category Number
+              * @param {number} [lower=0] The lower bound.
+              * @param {number} [upper=1] The upper bound.
+              * @param {boolean} [floating] Specify returning a floating-point number.
+              * @returns {number} Returns the random number.
+              * @example
+              *
+              * _.random(0, 5);
+              * // => an integer between 0 and 5
+              *
+              * _.random(5);
+              * // => also an integer between 0 and 5
+              *
+              * _.random(5, true);
+              * // => a floating-point number between 0 and 5
+              *
+              * _.random(1.2, 5.2);
+              * // => a floating-point number between 1.2 and 5.2
+              */
 
-         action.getCreatedWayIDs = function () {
-           return _createdWayIDs;
-         };
 
-         action.waysForNode = function (nodeId, graph) {
-           var node = graph.entity(nodeId);
-           var splittableParents = graph.parentWays(node).filter(isSplittable);
+             function random(lower, upper, floating) {
+               if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
+                 upper = floating = undefined$1;
+               }
 
-           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 (floating === undefined$1) {
+                 if (typeof upper == 'boolean') {
+                   floating = upper;
+                   upper = undefined$1;
+                 } else if (typeof lower == 'boolean') {
+                   floating = lower;
+                   lower = undefined$1;
+                 }
+               }
 
-             if (hasLine) {
-               return splittableParents.filter(function (parent) {
-                 return parent.geometry(graph) === 'line';
-               });
-             }
-           }
+               if (lower === undefined$1 && upper === undefined$1) {
+                 lower = 0;
+                 upper = 1;
+               } else {
+                 lower = toFinite(lower);
 
-           return splittableParents;
+                 if (upper === undefined$1) {
+                   upper = lower;
+                   lower = 0;
+                 } else {
+                   upper = toFinite(upper);
+                 }
+               }
 
-           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 (lower > upper) {
+                 var temp = lower;
+                 lower = upper;
+                 upper = temp;
+               }
 
-             if (parent.isClosed()) return true; // otherwise, we can't split nodes at their endpoints.
+               if (floating || lower % 1 || upper % 1) {
+                 var rand = nativeRandom();
+                 return nativeMin(lower + rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1))), upper);
+               }
 
-             for (var i = 1; i < parent.nodes.length - 1; i++) {
-               if (parent.nodes[i] === nodeId) return true;
+               return baseRandom(lower, upper);
              }
+             /*------------------------------------------------------------------------*/
 
-             return false;
-           }
-         };
+             /**
+              * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the camel cased string.
+              * @example
+              *
+              * _.camelCase('Foo Bar');
+              * // => 'fooBar'
+              *
+              * _.camelCase('--foo-bar--');
+              * // => 'fooBar'
+              *
+              * _.camelCase('__FOO_BAR__');
+              * // => 'fooBar'
+              */
 
-         action.ways = function (graph) {
-           return utilArrayUniq([].concat.apply([], nodeIds.map(function (nodeId) {
-             return action.waysForNode(nodeId, graph);
-           })));
-         };
 
-         action.disabled = function (graph) {
-           for (var i = 0; i < nodeIds.length; i++) {
-             var nodeId = nodeIds[i];
-             var candidates = action.waysForNode(nodeId, graph);
+             var camelCase = createCompounder(function (result, word, index) {
+               word = word.toLowerCase();
+               return result + (index ? capitalize(word) : word);
+             });
+             /**
+              * Converts the first character of `string` to upper case and the remaining
+              * to lower case.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to capitalize.
+              * @returns {string} Returns the capitalized string.
+              * @example
+              *
+              * _.capitalize('FRED');
+              * // => 'Fred'
+              */
 
-             if (candidates.length === 0 || _wayIDs && _wayIDs.length !== candidates.length) {
-               return 'not_eligible';
+             function capitalize(string) {
+               return upperFirst(toString(string).toLowerCase());
              }
-           }
-         };
+             /**
+              * Deburrs `string` by converting
+              * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
+              * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
+              * letters to basic Latin letters and removing
+              * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to deburr.
+              * @returns {string} Returns the deburred string.
+              * @example
+              *
+              * _.deburr('déjà vu');
+              * // => 'deja vu'
+              */
 
-         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;
-         };
+             function deburr(string) {
+               string = toString(string);
+               return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
+             }
+             /**
+              * Checks if `string` ends with the given target string.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to inspect.
+              * @param {string} [target] The string to search for.
+              * @param {number} [position=string.length] The position to search up to.
+              * @returns {boolean} Returns `true` if `string` ends with `target`,
+              *  else `false`.
+              * @example
+              *
+              * _.endsWith('abc', 'c');
+              * // => true
+              *
+              * _.endsWith('abc', 'b');
+              * // => false
+              *
+              * _.endsWith('abc', 'b', 2);
+              * // => true
+              */
 
-         return action;
-       }
 
-       function coreGraph(other, mutable) {
-         if (!(this instanceof coreGraph)) return new coreGraph(other, mutable);
+             function endsWith(string, target, position) {
+               string = toString(string);
+               target = baseToString(target);
+               var length = string.length;
+               position = position === undefined$1 ? length : baseClamp(toInteger(position), 0, length);
+               var end = position;
+               position -= target.length;
+               return position >= 0 && string.slice(position, end) == target;
+             }
+             /**
+              * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
+              * corresponding HTML entities.
+              *
+              * **Note:** No other characters are escaped. To escape additional
+              * characters use a third-party library like [_he_](https://mths.be/he).
+              *
+              * Though the ">" character is escaped for symmetry, characters like
+              * ">" and "/" don't need escaping in HTML and have no special meaning
+              * unless they're part of a tag or unquoted attribute value. See
+              * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
+              * (under "semi-related fun fact") for more details.
+              *
+              * When working with HTML you should always
+              * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
+              * XSS vectors.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category String
+              * @param {string} [string=''] The string to escape.
+              * @returns {string} Returns the escaped string.
+              * @example
+              *
+              * _.escape('fred, barney, & pebbles');
+              * // => 'fred, barney, &amp; pebbles'
+              */
 
-         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]);
-         }
 
-         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
+             function escape(string) {
+               string = toString(string);
+               return string && reHasUnescapedHtml.test(string) ? string.replace(reUnescapedHtml, escapeHtmlChar) : string;
+             }
+             /**
+              * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
+              * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to escape.
+              * @returns {string} Returns the escaped string.
+              * @example
+              *
+              * _.escapeRegExp('[lodash](https://lodash.com/)');
+              * // => '\[lodash\]\(https://lodash\.com/\)'
+              */
 
-           if (!entity) {
-             entity = this.entities.__proto__[id]; // eslint-disable-line no-proto
-           }
 
-           if (!entity) {
-             throw new Error('entity ' + id + ' not found');
-           }
+             function escapeRegExp(string) {
+               string = toString(string);
+               return string && reHasRegExpChar.test(string) ? string.replace(reRegExpChar, '\\$&') : string;
+             }
+             /**
+              * Converts `string` to
+              * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the kebab cased string.
+              * @example
+              *
+              * _.kebabCase('Foo Bar');
+              * // => 'foo-bar'
+              *
+              * _.kebabCase('fooBar');
+              * // => 'foo-bar'
+              *
+              * _.kebabCase('__FOO_BAR__');
+              * // => 'foo-bar'
+              */
 
-           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];
-           }
+             var kebabCase = createCompounder(function (result, word, index) {
+               return result + (index ? '-' : '') + word.toLowerCase();
+             });
+             /**
+              * Converts `string`, as space separated words, to lower case.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the lower cased string.
+              * @example
+              *
+              * _.lowerCase('--Foo-Bar--');
+              * // => 'foo bar'
+              *
+              * _.lowerCase('fooBar');
+              * // => 'foo bar'
+              *
+              * _.lowerCase('__FOO_BAR__');
+              * // => 'foo bar'
+              */
 
-           transients[key] = fn.call(entity);
-           return transients[key];
-         },
-         parentWays: function parentWays(entity) {
-           var parents = this._parentWays[entity.id];
-           var result = [];
+             var lowerCase = createCompounder(function (result, word, index) {
+               return result + (index ? ' ' : '') + word.toLowerCase();
+             });
+             /**
+              * Converts the first character of `string` to lower case.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the converted string.
+              * @example
+              *
+              * _.lowerFirst('Fred');
+              * // => 'fred'
+              *
+              * _.lowerFirst('FRED');
+              * // => 'fRED'
+              */
 
-           if (parents) {
-             parents.forEach(function (id) {
-               result.push(this.entity(id));
-             }, this);
-           }
+             var lowerFirst = createCaseFirst('toLowerCase');
+             /**
+              * Pads `string` on the left and right sides if it's shorter than `length`.
+              * Padding characters are truncated if they can't be evenly divided by `length`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to pad.
+              * @param {number} [length=0] The padding length.
+              * @param {string} [chars=' '] The string used as padding.
+              * @returns {string} Returns the padded string.
+              * @example
+              *
+              * _.pad('abc', 8);
+              * // => '  abc   '
+              *
+              * _.pad('abc', 8, '_-');
+              * // => '_-abc_-_'
+              *
+              * _.pad('abc', 3);
+              * // => 'abc'
+              */
 
-           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 = [];
+             function pad(string, length, chars) {
+               string = toString(string);
+               length = toInteger(length);
+               var strLength = length ? stringSize(string) : 0;
 
-           if (parents) {
-             parents.forEach(function (id) {
-               result.push(this.entity(id));
-             }, this);
-           }
+               if (!length || strLength >= length) {
+                 return string;
+               }
 
-           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 = [];
+               var mid = (length - strLength) / 2;
+               return createPadding(nativeFloor(mid), chars) + string + createPadding(nativeCeil(mid), chars);
+             }
+             /**
+              * Pads `string` on the right side if it's shorter than `length`. Padding
+              * characters are truncated if they exceed `length`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to pad.
+              * @param {number} [length=0] The padding length.
+              * @param {string} [chars=' '] The string used as padding.
+              * @returns {string} Returns the padded string.
+              * @example
+              *
+              * _.padEnd('abc', 6);
+              * // => 'abc   '
+              *
+              * _.padEnd('abc', 6, '_-');
+              * // => 'abc_-_'
+              *
+              * _.padEnd('abc', 3);
+              * // => 'abc'
+              */
 
-           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;
 
-           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
+             function padEnd(string, length, chars) {
+               string = toString(string);
+               length = toInteger(length);
+               var strLength = length ? stringSize(string) : 0;
+               return length && strLength < length ? string + createPadding(length - strLength, chars) : string;
+             }
+             /**
+              * Pads `string` on the left side if it's shorter than `length`. Padding
+              * characters are truncated if they exceed `length`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to pad.
+              * @param {number} [length=0] The padding length.
+              * @param {string} [chars=' '] The string used as padding.
+              * @returns {string} Returns the padded string.
+              * @example
+              *
+              * _.padStart('abc', 6);
+              * // => '   abc'
+              *
+              * _.padStart('abc', 6, '_-');
+              * // => '_-_abc'
+              *
+              * _.padStart('abc', 3);
+              * // => 'abc'
+              */
 
-             base.entities[entity.id] = entity;
 
-             this._updateCalculated(undefined, entity, base.parentWays, base.parentRels); // Restore provisionally-deleted nodes that are discovered to have an extant parent
+             function padStart(string, length, chars) {
+               string = toString(string);
+               length = toInteger(length);
+               var strLength = length ? stringSize(string) : 0;
+               return length && strLength < length ? createPadding(length - strLength, chars) + string : string;
+             }
+             /**
+              * Converts `string` to an integer of the specified radix. If `radix` is
+              * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
+              * hexadecimal, in which case a `radix` of `16` is used.
+              *
+              * **Note:** This method aligns with the
+              * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
+              *
+              * @static
+              * @memberOf _
+              * @since 1.1.0
+              * @category String
+              * @param {string} string The string to convert.
+              * @param {number} [radix=10] The radix to interpret `value` by.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {number} Returns the converted integer.
+              * @example
+              *
+              * _.parseInt('08');
+              * // => 8
+              *
+              * _.map(['6', '08', '10'], _.parseInt);
+              * // => [6, 8, 10]
+              */
 
 
-             if (entity.type === 'way') {
-               for (j = 0; j < entity.nodes.length; j++) {
-                 id = entity.nodes[j];
+             function parseInt(string, radix, guard) {
+               if (guard || radix == null) {
+                 radix = 0;
+               } else if (radix) {
+                 radix = +radix;
+               }
 
-                 for (k = 1; k < stack.length; k++) {
-                   var ents = stack[k].entities;
+               return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
+             }
+             /**
+              * Repeats the given string `n` times.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to repeat.
+              * @param {number} [n=1] The number of times to repeat the string.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {string} Returns the repeated string.
+              * @example
+              *
+              * _.repeat('*', 3);
+              * // => '***'
+              *
+              * _.repeat('abc', 2);
+              * // => 'abcabc'
+              *
+              * _.repeat('abc', 0);
+              * // => ''
+              */
 
-                   if (ents.hasOwnProperty(id) && ents[id] === undefined) {
-                     delete ents[id];
-                   }
-                 }
+
+             function repeat(string, n, guard) {
+               if (guard ? isIterateeCall(string, n, guard) : n === undefined$1) {
+                 n = 1;
+               } else {
+                 n = toInteger(n);
                }
-             }
-           }
 
-           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);
+               return baseRepeat(toString(string), n);
              }
-           }, 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;
+             /**
+              * Replaces matches for `pattern` in `string` with `replacement`.
+              *
+              * **Note:** This method is based on
+              * [`String#replace`](https://mdn.io/String/replace).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to modify.
+              * @param {RegExp|string} pattern The pattern to replace.
+              * @param {Function|string} replacement The match replacement.
+              * @returns {string} Returns the modified string.
+              * @example
+              *
+              * _.replace('Hi Fred', 'Fred', 'Barney');
+              * // => 'Hi Barney'
+              */
 
-           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);
+             function replace() {
+               var args = arguments,
+                   string = toString(args[0]);
+               return args.length < 3 ? string : string.replace(args[1], args[2]);
              }
+             /**
+              * Converts `string` to
+              * [snake case](https://en.wikipedia.org/wiki/Snake_case).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the snake cased string.
+              * @example
+              *
+              * _.snakeCase('Foo Bar');
+              * // => 'foo_bar'
+              *
+              * _.snakeCase('fooBar');
+              * // => 'foo_bar'
+              *
+              * _.snakeCase('--FOO-BAR--');
+              * // => 'foo_bar'
+              */
 
-             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;
-             }) : [];
 
-             if (oldentity && entity) {
-               removed = utilArrayDifference(oldentityMemberIDs, entityMemberIDs);
-               added = utilArrayDifference(entityMemberIDs, oldentityMemberIDs);
-             } else if (oldentity) {
-               removed = oldentityMemberIDs;
-               added = [];
-             } else if (entity) {
-               removed = [];
-               added = entityMemberIDs;
-             }
+             var snakeCase = createCompounder(function (result, word, index) {
+               return result + (index ? '_' : '') + word.toLowerCase();
+             });
+             /**
+              * Splits `string` by `separator`.
+              *
+              * **Note:** This method is based on
+              * [`String#split`](https://mdn.io/String/split).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to split.
+              * @param {RegExp|string} separator The separator pattern to split by.
+              * @param {number} [limit] The length to truncate results to.
+              * @returns {Array} Returns the string segments.
+              * @example
+              *
+              * _.split('a-b-c', '-', 2);
+              * // => ['a', 'b']
+              */
 
-             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);
-             }
+             function split(string, separator, limit) {
+               if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
+                 separator = limit = undefined$1;
+               }
 
-             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);
+               limit = limit === undefined$1 ? MAX_ARRAY_LENGTH : limit >>> 0;
 
-             this.entities[entity.id] = entity;
-           });
-         },
-         remove: function remove(entity) {
-           return this.update(function () {
-             this._updateCalculated(entity, undefined);
+               if (!limit) {
+                 return [];
+               }
 
-             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);
+               string = toString(string);
 
-             delete this.entities[id];
-           });
-         },
-         update: function update() {
-           var graph = this.frozen ? coreGraph(this, true) : this;
+               if (string && (typeof separator == 'string' || separator != null && !isRegExp(separator))) {
+                 separator = baseToString(separator);
 
-           for (var i = 0; i < arguments.length; i++) {
-             arguments[i].call(graph, graph);
-           }
+                 if (!separator && hasUnicode(string)) {
+                   return castSlice(stringToArray(string), 0, limit);
+                 }
+               }
 
-           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);
+               return string.split(separator, limit);
+             }
+             /**
+              * Converts `string` to
+              * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
+              *
+              * @static
+              * @memberOf _
+              * @since 3.1.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the start cased string.
+              * @example
+              *
+              * _.startCase('--foo-bar--');
+              * // => 'Foo Bar'
+              *
+              * _.startCase('fooBar');
+              * // => 'Foo Bar'
+              *
+              * _.startCase('__FOO_BAR__');
+              * // => 'FOO BAR'
+              */
 
-           for (var i in entities) {
-             this.entities[i] = entities[i];
 
-             this._updateCalculated(base.entities[i], this.entities[i]);
-           }
+             var startCase = createCompounder(function (result, word, index) {
+               return result + (index ? ' ' : '') + upperFirst(word);
+             });
+             /**
+              * Checks if `string` starts with the given target string.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to inspect.
+              * @param {string} [target] The string to search for.
+              * @param {number} [position=0] The position to search from.
+              * @returns {boolean} Returns `true` if `string` starts with `target`,
+              *  else `false`.
+              * @example
+              *
+              * _.startsWith('abc', 'a');
+              * // => true
+              *
+              * _.startsWith('abc', 'b');
+              * // => false
+              *
+              * _.startsWith('abc', 'b', 1);
+              * // => true
+              */
 
-           return this;
-         }
-       };
+             function startsWith(string, target, position) {
+               string = toString(string);
+               position = position == null ? 0 : baseClamp(toInteger(position), 0, string.length);
+               target = baseToString(target);
+               return string.slice(position, position + target.length) == target;
+             }
+             /**
+              * Creates a compiled template function that can interpolate data properties
+              * in "interpolate" delimiters, HTML-escape interpolated data properties in
+              * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
+              * properties may be accessed as free variables in the template. If a setting
+              * object is given, it takes precedence over `_.templateSettings` values.
+              *
+              * **Note:** In the development build `_.template` utilizes
+              * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
+              * for easier debugging.
+              *
+              * For more information on precompiling templates see
+              * [lodash's custom builds documentation](https://lodash.com/custom-builds).
+              *
+              * For more information on Chrome extension sandboxes see
+              * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category String
+              * @param {string} [string=''] The template string.
+              * @param {Object} [options={}] The options object.
+              * @param {RegExp} [options.escape=_.templateSettings.escape]
+              *  The HTML "escape" delimiter.
+              * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
+              *  The "evaluate" delimiter.
+              * @param {Object} [options.imports=_.templateSettings.imports]
+              *  An object to import into the template as free variables.
+              * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
+              *  The "interpolate" delimiter.
+              * @param {string} [options.sourceURL='lodash.templateSources[n]']
+              *  The sourceURL of the compiled template.
+              * @param {string} [options.variable='obj']
+              *  The data object variable name.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Function} Returns the compiled template function.
+              * @example
+              *
+              * // Use the "interpolate" delimiter to create a compiled template.
+              * var compiled = _.template('hello <%= user %>!');
+              * compiled({ 'user': 'fred' });
+              * // => 'hello fred!'
+              *
+              * // Use the HTML "escape" delimiter to escape data property values.
+              * var compiled = _.template('<b><%- value %></b>');
+              * compiled({ 'value': '<script>' });
+              * // => '<b>&lt;script&gt;</b>'
+              *
+              * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
+              * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
+              * compiled({ 'users': ['fred', 'barney'] });
+              * // => '<li>fred</li><li>barney</li>'
+              *
+              * // Use the internal `print` function in "evaluate" delimiters.
+              * var compiled = _.template('<% print("hello " + user); %>!');
+              * compiled({ 'user': 'barney' });
+              * // => 'hello barney!'
+              *
+              * // Use the ES template literal delimiter as an "interpolate" delimiter.
+              * // Disable support by replacing the "interpolate" delimiter.
+              * var compiled = _.template('hello ${ user }!');
+              * compiled({ 'user': 'pebbles' });
+              * // => 'hello pebbles!'
+              *
+              * // Use backslashes to treat delimiters as plain text.
+              * var compiled = _.template('<%= "\\<%- value %\\>" %>');
+              * compiled({ 'value': 'ignored' });
+              * // => '<%- value %>'
+              *
+              * // Use the `imports` option to import `jQuery` as `jq`.
+              * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
+              * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
+              * compiled({ 'users': ['fred', 'barney'] });
+              * // => '<li>fred</li><li>barney</li>'
+              *
+              * // Use the `sourceURL` option to specify a custom sourceURL for the template.
+              * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
+              * compiled(data);
+              * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
+              *
+              * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
+              * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
+              * compiled.source;
+              * // => function(data) {
+              * //   var __t, __p = '';
+              * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
+              * //   return __p;
+              * // }
+              *
+              * // Use custom template delimiters.
+              * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
+              * var compiled = _.template('hello {{ user }}!');
+              * compiled({ 'user': 'mustache' });
+              * // => 'hello mustache!'
+              *
+              * // Use the `source` property to inline compiled templates for meaningful
+              * // line numbers in error messages and stack traces.
+              * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
+              *   var JST = {\
+              *     "main": ' + _.template(mainText).source + '\
+              *   };\
+              * ');
+              */
 
-       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
+             function template(string, options, guard) {
+               // Based on John Resig's `tmpl` implementation
+               // (http://ejohn.org/blog/javascript-micro-templating/)
+               // and Laura Doktorova's doT.js (https://github.com/olado/doT).
+               var settings = lodash.templateSettings;
 
-         var vgraph = coreGraph(); // virtual graph
+               if (guard && isIterateeCall(string, options, guard)) {
+                 options = undefined$1;
+               }
 
-         var i, j, k;
+               string = toString(string);
+               options = assignInWith({}, options, settings, customDefaultsAssignIn);
+               var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
+                   importsKeys = keys(imports),
+                   importsValues = baseValues(imports, importsKeys);
+               var isEscaping,
+                   isEvaluating,
+                   index = 0,
+                   interpolate = options.interpolate || reNoMatch,
+                   source = "__p += '"; // Compile the regexp to match each delimiter.
 
-         function memberOfRestriction(entity) {
-           return graph.parentRelations(entity).some(function (r) {
-             return r.isRestriction();
-           });
-         }
+               var reDelimiters = RegExp((options.escape || reNoMatch).source + '|' + interpolate.source + '|' + (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' + (options.evaluate || reNoMatch).source + '|$', 'g'); // Use a sourceURL for easier debugging.
+               // The sourceURL gets injected into the source that's eval-ed, so be careful
+               // to normalize all kinds of whitespace, so e.g. newlines (and unicode versions of it) can't sneak in
+               // and escape the comment, thus injecting code that gets evaled.
 
-         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];
-         }
+               var sourceURL = '//# sourceURL=' + (hasOwnProperty.call(options, 'sourceURL') ? (options.sourceURL + '').replace(/\s/g, ' ') : 'lodash.templateSources[' + ++templateCounter + ']') + '\n';
+               string.replace(reDelimiters, function (match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
+                 interpolateValue || (interpolateValue = esTemplateValue); // Escape characters that can't be included in string literals.
+
+                 source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar); // Replace delimiters with snippets.
+
+                 if (escapeValue) {
+                   isEscaping = true;
+                   source += "' +\n__e(" + escapeValue + ") +\n'";
+                 }
 
-         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
+                 if (evaluateValue) {
+                   isEvaluating = true;
+                   source += "';\n" + evaluateValue + ";\n__p += '";
+                 }
 
-         var actions = []; // STEP 1:  walk the graph outwards from starting vertex to search
-         //  for more key vertices and ways to include in the intersection..
+                 if (interpolateValue) {
+                   source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
+                 }
 
-         while (checkVertices.length) {
-           vertex = checkVertices.pop(); // check this vertex for parent ways that are roads
+                 index = offset + match.length; // The JS engine embedded in Adobe products needs `match` returned in
+                 // order to produce the correct `offset` value.
 
-           checkWays = graph.parentWays(vertex);
-           var hasWays = false;
+                 return match;
+               });
+               source += "';\n"; // If `variable` is not specified wrap a with-statement around the generated
+               // code to add the data object to the top of the scope chain.
 
-           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 variable = hasOwnProperty.call(options, 'variable') && options.variable;
 
-             hasWays = true; // check the way's children for more key vertices
+               if (!variable) {
+                 source = 'with (obj) {\n' + source + '\n}\n';
+               } // Throw an error if a forbidden character was found in `variable`, to prevent
+               // potential command injection attacks.
+               else if (reForbiddenIdentifierChars.test(variable)) {
+                 throw new Error(INVALID_TEMPL_VAR_ERROR_TEXT);
+               } // Cleanup code by stripping empty strings.
 
-             nodes = utilArrayUniq(graph.childNodes(way));
 
-             for (j = 0; j < nodes.length; j++) {
-               node = nodes[j];
-               if (node === vertex) continue; // same thing
+               source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source).replace(reEmptyStringMiddle, '$1').replace(reEmptyStringTrailing, '$1;'); // Frame code as the function body.
 
-               if (vertices.indexOf(node) !== -1) continue; // seen it already
+               source = 'function(' + (variable || 'obj') + ') {\n' + (variable ? '' : 'obj || (obj = {});\n') + "var __t, __p = ''" + (isEscaping ? ', __e = _.escape' : '') + (isEvaluating ? ', __j = Array.prototype.join;\n' + "function print() { __p += __j.call(arguments, '') }\n" : ';\n') + source + 'return __p\n}';
+               var result = attempt(function () {
+                 return Function(importsKeys, sourceURL + 'return ' + source).apply(undefined$1, importsValues);
+               }); // Provide the compiled function's source by its `toString` method or
+               // the `source` property as a convenience for inlining compiled templates.
 
-               if (geoSphericalDistance(node.loc, startNode.loc) > maxDistance) continue; // too far from start
-               // a key vertex will have parents that are also roads
+               result.source = source;
 
-               var hasParents = false;
-               parents = graph.parentWays(node);
+               if (isError(result)) {
+                 throw result;
+               }
 
-               for (k = 0; k < parents.length; k++) {
-                 parent = parents[k];
-                 if (parent === way) continue; // same thing
+               return result;
+             }
+             /**
+              * Converts `string`, as a whole, to lower case just like
+              * [String#toLowerCase](https://mdn.io/toLowerCase).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the lower cased string.
+              * @example
+              *
+              * _.toLower('--Foo-Bar--');
+              * // => '--foo-bar--'
+              *
+              * _.toLower('fooBar');
+              * // => 'foobar'
+              *
+              * _.toLower('__FOO_BAR__');
+              * // => '__foo_bar__'
+              */
 
-                 if (ways.indexOf(parent) !== -1) continue; // seen it already
 
-                 if (!isRoad(parent)) continue; // not a road
+             function toLower(value) {
+               return toString(value).toLowerCase();
+             }
+             /**
+              * Converts `string`, as a whole, to upper case just like
+              * [String#toUpperCase](https://mdn.io/toUpperCase).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the upper cased string.
+              * @example
+              *
+              * _.toUpper('--foo-bar--');
+              * // => '--FOO-BAR--'
+              *
+              * _.toUpper('fooBar');
+              * // => 'FOOBAR'
+              *
+              * _.toUpper('__foo_bar__');
+              * // => '__FOO_BAR__'
+              */
 
-                 hasParents = true;
-                 break;
+
+             function toUpper(value) {
+               return toString(value).toUpperCase();
+             }
+             /**
+              * Removes leading and trailing whitespace or specified characters from `string`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to trim.
+              * @param {string} [chars=whitespace] The characters to trim.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {string} Returns the trimmed string.
+              * @example
+              *
+              * _.trim('  abc  ');
+              * // => 'abc'
+              *
+              * _.trim('-_-abc-_-', '_-');
+              * // => 'abc'
+              *
+              * _.map(['  foo  ', '  bar  '], _.trim);
+              * // => ['foo', 'bar']
+              */
+
+
+             function trim(string, chars, guard) {
+               string = toString(string);
+
+               if (string && (guard || chars === undefined$1)) {
+                 return baseTrim(string);
                }
 
-               if (hasParents) {
-                 checkVertices.push(node);
+               if (!string || !(chars = baseToString(chars))) {
+                 return string;
                }
+
+               var strSymbols = stringToArray(string),
+                   chrSymbols = stringToArray(chars),
+                   start = charsStartIndex(strSymbols, chrSymbols),
+                   end = charsEndIndex(strSymbols, chrSymbols) + 1;
+               return castSlice(strSymbols, start, end).join('');
              }
-           }
+             /**
+              * Removes trailing whitespace or specified characters from `string`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to trim.
+              * @param {string} [chars=whitespace] The characters to trim.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {string} Returns the trimmed string.
+              * @example
+              *
+              * _.trimEnd('  abc  ');
+              * // => '  abc'
+              *
+              * _.trimEnd('-_-abc-_-', '_-');
+              * // => '-_-abc'
+              */
 
-           if (hasWays) {
-             vertices.push(vertex);
-           }
-         }
 
-         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
+             function trimEnd(string, chars, guard) {
+               string = toString(string);
 
-         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));
+               if (string && (guard || chars === undefined$1)) {
+                 return string.slice(0, trimmedEndIndex(string) + 1);
+               }
+
+               if (!string || !(chars = baseToString(chars))) {
+                 return string;
                }
+
+               var strSymbols = stringToArray(string),
+                   end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;
+               return castSlice(strSymbols, 0, end).join('');
              }
-           });
-         }); // STEP 3:  Force all oneways to be drawn in the forward direction
+             /**
+              * Removes leading whitespace or specified characters from `string`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to trim.
+              * @param {string} [chars=whitespace] The characters to trim.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {string} Returns the trimmed string.
+              * @example
+              *
+              * _.trimStart('  abc  ');
+              * // => 'abc  '
+              *
+              * _.trimStart('-_-abc-_-', '_-');
+              * // => 'abc-_-'
+              */
 
-         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);
-           }
-         }); // STEP 4:  Split ways on key vertices
+             function trimStart(string, chars, guard) {
+               string = toString(string);
 
-         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');
+               if (string && (guard || chars === undefined$1)) {
+                 return string.replace(reTrimStart, '');
+               }
 
-           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
+               if (!string || !(chars = baseToString(chars))) {
+                 return string;
+               }
 
-         osmEntity.id.next.way = origCount; // STEP 5:  Update arrays to point to vgraph entities
+               var strSymbols = stringToArray(string),
+                   start = charsStartIndex(strSymbols, stringToArray(chars));
+               return castSlice(strSymbols, start).join('');
+             }
+             /**
+              * Truncates `string` if it's longer than the given maximum string length.
+              * The last characters of the truncated string are replaced with the omission
+              * string which defaults to "...".
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to truncate.
+              * @param {Object} [options={}] The options object.
+              * @param {number} [options.length=30] The maximum string length.
+              * @param {string} [options.omission='...'] The string to indicate text is omitted.
+              * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
+              * @returns {string} Returns the truncated string.
+              * @example
+              *
+              * _.truncate('hi-diddly-ho there, neighborino');
+              * // => 'hi-diddly-ho there, neighbo...'
+              *
+              * _.truncate('hi-diddly-ho there, neighborino', {
+              *   'length': 24,
+              *   'separator': ' '
+              * });
+              * // => 'hi-diddly-ho there,...'
+              *
+              * _.truncate('hi-diddly-ho there, neighborino', {
+              *   'length': 24,
+              *   'separator': /,? +/
+              * });
+              * // => 'hi-diddly-ho there...'
+              *
+              * _.truncate('hi-diddly-ho there, neighborino', {
+              *   'omission': ' [...]'
+              * });
+              * // => 'hi-diddly-ho there, neig [...]'
+              */
 
-         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.
 
-         function withMetadata(way, vertexIds) {
-           var __oneWay = way.isOneWay(); // which affixes are key vertices?
+             function truncate(string, options) {
+               var length = DEFAULT_TRUNC_LENGTH,
+                   omission = DEFAULT_TRUNC_OMISSION;
 
+               if (isObject(options)) {
+                 var separator = 'separator' in options ? options.separator : separator;
+                 length = 'length' in options ? toInteger(options.length) : length;
+                 omission = 'omission' in options ? baseToString(options.omission) : omission;
+               }
 
-           var __first = vertexIds.indexOf(way.first()) !== -1;
+               string = toString(string);
+               var strLength = string.length;
 
-           var __last = vertexIds.indexOf(way.last()) !== -1; // what roles is this way eligible for?
+               if (hasUnicode(string)) {
+                 var strSymbols = stringToArray(string);
+                 strLength = strSymbols.length;
+               }
 
+               if (length >= strLength) {
+                 return string;
+               }
 
-           var __via = __first && __last;
+               var end = length - stringSize(omission);
 
-           var __from = __first && !__oneWay || __last;
+               if (end < 1) {
+                 return omission;
+               }
 
-           var __to = __first || __last && !__oneWay;
+               var result = strSymbols ? castSlice(strSymbols, 0, end).join('') : string.slice(0, end);
 
-           return way.update({
-             __first: __first,
-             __last: __last,
-             __from: __from,
-             __via: __via,
-             __to: __to,
-             __oneWay: __oneWay
-           });
-         }
+               if (separator === undefined$1) {
+                 return result + omission;
+               }
 
-         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
+               if (strSymbols) {
+                 end += result.length - end;
+               }
 
-         var keepGoing;
-         var removeWayIds = [];
-         var removeVertexIds = [];
+               if (isRegExp(separator)) {
+                 if (string.slice(end).search(separator)) {
+                   var match,
+                       substring = result;
 
-         do {
-           keepGoing = false;
-           checkVertices = vertexIds.slice();
+                   if (!separator.global) {
+                     separator = RegExp(separator.source, toString(reFlags.exec(separator)) + 'g');
+                   }
 
-           for (i = 0; i < checkVertices.length; i++) {
-             var vertexId = checkVertices[i];
-             vertex = vgraph.hasEntity(vertexId);
+                   separator.lastIndex = 0;
 
-             if (!vertex) {
-               if (vertexIds.indexOf(vertexId) !== -1) {
-                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
+                   while (match = separator.exec(substring)) {
+                     var newEnd = match.index;
+                   }
+
+                   result = result.slice(0, newEnd === undefined$1 ? end : newEnd);
+                 }
+               } else if (string.indexOf(baseToString(separator), end) != end) {
+                 var index = result.lastIndexOf(separator);
+
+                 if (index > -1) {
+                   result = result.slice(0, index);
+                 }
                }
 
-               removeVertexIds.push(vertexId);
-               continue;
+               return result + omission;
              }
+             /**
+              * The inverse of `_.escape`; this method converts the HTML entities
+              * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
+              * their corresponding characters.
+              *
+              * **Note:** No other HTML entities are unescaped. To unescape additional
+              * HTML entities use a third-party library like [_he_](https://mths.be/he).
+              *
+              * @static
+              * @memberOf _
+              * @since 0.6.0
+              * @category String
+              * @param {string} [string=''] The string to unescape.
+              * @returns {string} Returns the unescaped string.
+              * @example
+              *
+              * _.unescape('fred, barney, &amp; pebbles');
+              * // => 'fred, barney, & pebbles'
+              */
 
-             parents = vgraph.parentWays(vertex);
 
-             if (parents.length < 3) {
-               if (vertexIds.indexOf(vertexId) !== -1) {
-                 vertexIds.splice(vertexIds.indexOf(vertexId), 1); // stop checking this one
-               }
+             function unescape(string) {
+               string = toString(string);
+               return string && reHasEscapedHtml.test(string) ? string.replace(reEscapedHtml, unescapeHtmlChar) : string;
              }
+             /**
+              * Converts `string`, as space separated words, to upper case.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the upper cased string.
+              * @example
+              *
+              * _.upperCase('--foo-bar');
+              * // => 'FOO BAR'
+              *
+              * _.upperCase('fooBar');
+              * // => 'FOO BAR'
+              *
+              * _.upperCase('__foo_bar__');
+              * // => 'FOO BAR'
+              */
 
-             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 (aIsLeaf && !bIsLeaf) {
-                 leaf = a;
-                 survivor = b;
-               } else if (!aIsLeaf && bIsLeaf) {
-                 leaf = b;
-                 survivor = a;
-               }
+             var upperCase = createCompounder(function (result, word, index) {
+               return result + (index ? ' ' : '') + word.toUpperCase();
+             });
+             /**
+              * Converts the first character of `string` to upper case.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category String
+              * @param {string} [string=''] The string to convert.
+              * @returns {string} Returns the converted string.
+              * @example
+              *
+              * _.upperFirst('fred');
+              * // => 'Fred'
+              *
+              * _.upperFirst('FRED');
+              * // => 'FRED'
+              */
 
-               if (leaf && survivor) {
-                 survivor = withMetadata(survivor, vertexIds); // update survivor way
+             var upperFirst = createCaseFirst('toUpperCase');
+             /**
+              * Splits `string` into an array of its words.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category String
+              * @param {string} [string=''] The string to inspect.
+              * @param {RegExp|string} [pattern] The pattern to match words.
+              * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+              * @returns {Array} Returns the words of `string`.
+              * @example
+              *
+              * _.words('fred, barney, & pebbles');
+              * // => ['fred', 'barney', 'pebbles']
+              *
+              * _.words('fred, barney, & pebbles', /[^, ]+/g);
+              * // => ['fred', 'barney', '&', 'pebbles']
+              */
 
-                 vgraph = vgraph.replace(survivor).remove(leaf); // update graph
+             function words(string, pattern, guard) {
+               string = toString(string);
+               pattern = guard ? undefined$1 : pattern;
 
-                 removeWayIds.push(leaf.id);
-                 keepGoing = true;
+               if (pattern === undefined$1) {
+                 return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
                }
+
+               return string.match(pattern) || [];
              }
+             /*------------------------------------------------------------------------*/
 
-             parents = vgraph.parentWays(vertex);
+             /**
+              * Attempts to invoke `func`, returning either the result or the caught error
+              * object. Any additional arguments are provided to `func` when it's invoked.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Util
+              * @param {Function} func The function to attempt.
+              * @param {...*} [args] The arguments to invoke `func` with.
+              * @returns {*} Returns the `func` result or error object.
+              * @example
+              *
+              * // Avoid throwing errors for invalid selectors.
+              * var elements = _.attempt(function(selector) {
+              *   return document.querySelectorAll(selector);
+              * }, '>_>');
+              *
+              * if (_.isError(elements)) {
+              *   elements = [];
+              * }
+              */
 
-             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 attempt = baseRest(function (func, args) {
+               try {
+                 return apply(func, undefined$1, args);
+               } catch (e) {
+                 return isError(e) ? e : new Error(e);
                }
+             });
+             /**
+              * Binds methods of an object to the object itself, overwriting the existing
+              * method.
+              *
+              * **Note:** This method doesn't set the "length" property of bound functions.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Util
+              * @param {Object} object The object to bind and assign the bound methods to.
+              * @param {...(string|string[])} methodNames The object method names to bind.
+              * @returns {Object} Returns `object`.
+              * @example
+              *
+              * var view = {
+              *   'label': 'docs',
+              *   'click': function() {
+              *     console.log('clicked ' + this.label);
+              *   }
+              * };
+              *
+              * _.bindAll(view, ['click']);
+              * jQuery(element).on('click', view.click);
+              * // => Logs 'clicked docs' when clicked.
+              */
 
-               removeVertexIds.push(vertexId);
-               keepGoing = true;
+             var bindAll = flatRest(function (object, methodNames) {
+               arrayEach(methodNames, function (key) {
+                 key = toKey(key);
+                 baseAssignValue(object, key, bind(object[key], object));
+               });
+               return object;
+             });
+             /**
+              * Creates a function that iterates over `pairs` and invokes the corresponding
+              * function of the first predicate to return truthy. The predicate-function
+              * pairs are invoked with the `this` binding and arguments of the created
+              * function.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Util
+              * @param {Array} pairs The predicate-function pairs.
+              * @returns {Function} Returns the new composite function.
+              * @example
+              *
+              * var func = _.cond([
+              *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
+              *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
+              *   [_.stubTrue,                      _.constant('no match')]
+              * ]);
+              *
+              * func({ 'a': 1, 'b': 2 });
+              * // => 'matches A'
+              *
+              * func({ 'a': 0, 'b': 1 });
+              * // => 'matches B'
+              *
+              * func({ 'a': '1', 'b': '2' });
+              * // => 'no match'
+              */
+
+             function cond(pairs) {
+               var length = pairs == null ? 0 : pairs.length,
+                   toIteratee = getIteratee();
+               pairs = !length ? [] : arrayMap(pairs, function (pair) {
+                 if (typeof pair[1] != 'function') {
+                   throw new TypeError(FUNC_ERROR_TEXT);
+                 }
+
+                 return [toIteratee(pair[0]), pair[1]];
+               });
+               return baseRest(function (args) {
+                 var index = -1;
+
+                 while (++index < length) {
+                   var pair = pairs[index];
+
+                   if (apply(pair[0], this, args)) {
+                     return apply(pair[1], this, args);
+                   }
+                 }
+               });
              }
+             /**
+              * Creates a function that invokes the predicate properties of `source` with
+              * the corresponding property values of a given object, returning `true` if
+              * all predicates return truthy, else `false`.
+              *
+              * **Note:** The created function is equivalent to `_.conformsTo` with
+              * `source` partially applied.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Util
+              * @param {Object} source The object of property predicates to conform to.
+              * @returns {Function} Returns the new spec function.
+              * @example
+              *
+              * var objects = [
+              *   { 'a': 2, 'b': 1 },
+              *   { 'a': 1, 'b': 2 }
+              * ];
+              *
+              * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
+              * // => [{ 'a': 1, 'b': 2 }]
+              */
 
-             if (parents.length < 1) {
-               // vertex is no longer attached to anything
-               vgraph = vgraph.remove(vertex);
+
+             function conforms(source) {
+               return baseConforms(baseClone(source, CLONE_DEEP_FLAG));
              }
-           }
-         } while (keepGoing);
+             /**
+              * Creates a function that returns `value`.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.4.0
+              * @category Util
+              * @param {*} value The value to return from the new function.
+              * @returns {Function} Returns the new constant function.
+              * @example
+              *
+              * var objects = _.times(2, _.constant({ 'a': 1 }));
+              *
+              * console.log(objects);
+              * // => [{ 'a': 1 }, { 'a': 1 }]
+              *
+              * console.log(objects[0] === objects[1]);
+              * // => true
+              */
 
-         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.
-         //
+             function constant(value) {
+               return function () {
+                 return value;
+               };
+             }
+             /**
+              * Checks `value` to determine whether a default value should be returned in
+              * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
+              * or `undefined`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.14.0
+              * @category Util
+              * @param {*} value The value to check.
+              * @param {*} defaultValue The default value.
+              * @returns {*} Returns the resolved value.
+              * @example
+              *
+              * _.defaultTo(1, 10);
+              * // => 1
+              *
+              * _.defaultTo(undefined, 10);
+              * // => 10
+              */
 
-         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
+             function defaultTo(value, defaultValue) {
+               return value == null || value !== value ? defaultValue : value;
+             }
+             /**
+              * Creates a function that returns the result of invoking the given functions
+              * with the `this` binding of the created function, where each successive
+              * invocation is supplied the return value of the previous.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Util
+              * @param {...(Function|Function[])} [funcs] The functions to invoke.
+              * @returns {Function} Returns the new composite function.
+              * @see _.flowRight
+              * @example
+              *
+              * function square(n) {
+              *   return n * n;
+              * }
+              *
+              * var addSquare = _.flow([_.add, square]);
+              * addSquare(1, 2);
+              * // => 9
+              */
 
-           function step(entity, currPath, currRestrictions, matchedRestriction) {
-             currPath = (currPath || []).slice(); // shallow copy
 
-             if (currPath.length >= maxPathLength) return;
-             currPath.push(entity.id);
-             currRestrictions = (currRestrictions || []).slice(); // shallow copy
+             var flow = createFlow();
+             /**
+              * This method is like `_.flow` except that it creates a function that
+              * invokes the given functions from right to left.
+              *
+              * @static
+              * @since 3.0.0
+              * @memberOf _
+              * @category Util
+              * @param {...(Function|Function[])} [funcs] The functions to invoke.
+              * @returns {Function} Returns the new composite function.
+              * @see _.flow
+              * @example
+              *
+              * function square(n) {
+              *   return n * n;
+              * }
+              *
+              * var addSquare = _.flowRight([square, _.add]);
+              * addSquare(1, 2);
+              * // => 9
+              */
 
-             var i, j;
+             var flowRight = createFlow(true);
+             /**
+              * This method returns the first argument it receives.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Util
+              * @param {*} value Any value.
+              * @returns {*} Returns `value`.
+              * @example
+              *
+              * var object = { 'a': 1 };
+              *
+              * console.log(_.identity(object) === object);
+              * // => true
+              */
 
-             if (entity.type === 'node') {
-               var parents = vgraph.parentWays(entity);
-               var nextWays = []; // which ways can we step into?
+             function identity(value) {
+               return value;
+             }
+             /**
+              * Creates a function that invokes `func` with the arguments of the created
+              * function. If `func` is a property name, the created function returns the
+              * property value for a given element. If `func` is an array or object, the
+              * created function returns `true` for elements that contain the equivalent
+              * source properties, otherwise it returns `false`.
+              *
+              * @static
+              * @since 4.0.0
+              * @memberOf _
+              * @category Util
+              * @param {*} [func=_.identity] The value to convert to a callback.
+              * @returns {Function} Returns the callback.
+              * @example
+              *
+              * var users = [
+              *   { 'user': 'barney', 'age': 36, 'active': true },
+              *   { 'user': 'fred',   'age': 40, 'active': false }
+              * ];
+              *
+              * // The `_.matches` iteratee shorthand.
+              * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
+              * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
+              *
+              * // The `_.matchesProperty` iteratee shorthand.
+              * _.filter(users, _.iteratee(['user', 'fred']));
+              * // => [{ 'user': 'fred', 'age': 40 }]
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.map(users, _.iteratee('user'));
+              * // => ['barney', 'fred']
+              *
+              * // Create custom iteratee shorthands.
+              * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
+              *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
+              *     return func.test(string);
+              *   };
+              * });
+              *
+              * _.filter(['abc', 'def'], /ef/);
+              * // => ['def']
+              */
 
-               for (i = 0; i < parents.length; i++) {
-                 var way = parents[i]; // if next way is a oneway incoming to this vertex, skip
 
-                 if (way.__oneWay && way.nodes[0] !== entity.id) continue; // if we have seen it before (allowing for an initial u-turn), skip
+             function iteratee(func) {
+               return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG));
+             }
+             /**
+              * Creates a function that performs a partial deep comparison between a given
+              * object and `source`, returning `true` if the given object has equivalent
+              * property values, else `false`.
+              *
+              * **Note:** The created function is equivalent to `_.isMatch` with `source`
+              * partially applied.
+              *
+              * Partial comparisons will match empty array and empty object `source`
+              * values against any array or object value, respectively. See `_.isEqual`
+              * for a list of supported value comparisons.
+              *
+              * **Note:** Multiple values can be checked by combining several matchers
+              * using `_.overSome`
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Util
+              * @param {Object} source The object of property values to match.
+              * @returns {Function} Returns the new spec function.
+              * @example
+              *
+              * var objects = [
+              *   { 'a': 1, 'b': 2, 'c': 3 },
+              *   { 'a': 4, 'b': 5, 'c': 6 }
+              * ];
+              *
+              * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
+              * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
+              *
+              * // Checking for several possible values
+              * _.filter(objects, _.overSome([_.matches({ 'a': 1 }), _.matches({ 'a': 4 })]));
+              * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
+              */
 
-                 if (currPath.indexOf(way.id) !== -1 && currPath.length >= 3) continue; // Check all "current" restrictions (where we've already walked the `FROM`)
 
-                 var restrict = null;
+             function matches(source) {
+               return baseMatches(baseClone(source, CLONE_DEEP_FLAG));
+             }
+             /**
+              * Creates a function that performs a partial deep comparison between the
+              * value at `path` of a given object to `srcValue`, returning `true` if the
+              * object value is equivalent, else `false`.
+              *
+              * **Note:** Partial comparisons will match empty array and empty object
+              * `srcValue` values against any array or object value, respectively. See
+              * `_.isEqual` for a list of supported value comparisons.
+              *
+              * **Note:** Multiple values can be checked by combining several matchers
+              * using `_.overSome`
+              *
+              * @static
+              * @memberOf _
+              * @since 3.2.0
+              * @category Util
+              * @param {Array|string} path The path of the property to get.
+              * @param {*} srcValue The value to match.
+              * @returns {Function} Returns the new spec function.
+              * @example
+              *
+              * var objects = [
+              *   { 'a': 1, 'b': 2, 'c': 3 },
+              *   { 'a': 4, 'b': 5, 'c': 6 }
+              * ];
+              *
+              * _.find(objects, _.matchesProperty('a', 4));
+              * // => { 'a': 4, 'b': 5, 'c': 6 }
+              *
+              * // Checking for several possible values
+              * _.filter(objects, _.overSome([_.matchesProperty('a', 1), _.matchesProperty('a', 4)]));
+              * // => [{ 'a': 1, 'b': 2, 'c': 3 }, { 'a': 4, 'b': 5, 'c': 6 }]
+              */
 
-                 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?
 
-                   var matchesFrom = f.id === fromWayId;
-                   var matchesViaTo = false;
-                   var isAlongOnlyPath = false;
+             function matchesProperty(path, srcValue) {
+               return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG));
+             }
+             /**
+              * Creates a function that invokes the method at `path` of a given object.
+              * Any additional arguments are provided to the invoked method.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.7.0
+              * @category Util
+              * @param {Array|string} path The path of the method to invoke.
+              * @param {...*} [args] The arguments to invoke the method with.
+              * @returns {Function} Returns the new invoker function.
+              * @example
+              *
+              * var objects = [
+              *   { 'a': { 'b': _.constant(2) } },
+              *   { 'a': { 'b': _.constant(1) } }
+              * ];
+              *
+              * _.map(objects, _.method('a.b'));
+              * // => [2, 1]
+              *
+              * _.map(objects, _.method(['a', 'b']));
+              * // => [2, 1]
+              */
+
+
+             var method = baseRest(function (path, args) {
+               return function (object) {
+                 return baseInvoke(object, path, args);
+               };
+             });
+             /**
+              * The opposite of `_.method`; this method creates a function that invokes
+              * the method at a given path of `object`. Any additional arguments are
+              * provided to the invoked method.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.7.0
+              * @category Util
+              * @param {Object} object The object to query.
+              * @param {...*} [args] The arguments to invoke the method with.
+              * @returns {Function} Returns the new invoker function.
+              * @example
+              *
+              * var array = _.times(3, _.constant),
+              *     object = { 'a': array, 'b': array, 'c': array };
+              *
+              * _.map(['a[2]', 'c[0]'], _.methodOf(object));
+              * // => [2, 0]
+              *
+              * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
+              * // => [2, 0]
+              */
+
+             var methodOf = baseRest(function (object, args) {
+               return function (path) {
+                 return baseInvoke(object, path, args);
+               };
+             });
+             /**
+              * Adds all own enumerable string keyed function properties of a source
+              * object to the destination object. If `object` is a function, then methods
+              * are added to its prototype as well.
+              *
+              * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
+              * avoid conflicts caused by modifying the original.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Util
+              * @param {Function|Object} [object=lodash] The destination object.
+              * @param {Object} source The object of functions to add.
+              * @param {Object} [options={}] The options object.
+              * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
+              * @returns {Function|Object} Returns `object`.
+              * @example
+              *
+              * function vowels(string) {
+              *   return _.filter(string, function(v) {
+              *     return /[aeiou]/i.test(v);
+              *   });
+              * }
+              *
+              * _.mixin({ 'vowels': vowels });
+              * _.vowels('fred');
+              * // => ['e']
+              *
+              * _('fred').vowels().value();
+              * // => ['e']
+              *
+              * _.mixin({ 'vowels': vowels }, { 'chain': false });
+              * _('fred').vowels();
+              * // => ['e']
+              */
+
+             function mixin(object, source, options) {
+               var props = keys(source),
+                   methodNames = baseFunctions(source, props);
+
+               if (options == null && !(isObject(source) && (methodNames.length || !props.length))) {
+                 options = source;
+                 source = object;
+                 object = this;
+                 methodNames = baseFunctions(source, keys(source));
+               }
+
+               var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
+                   isFunc = isFunction(object);
+               arrayEach(methodNames, function (methodName) {
+                 var func = source[methodName];
+                 object[methodName] = func;
+
+                 if (isFunc) {
+                   object.prototype[methodName] = function () {
+                     var chainAll = this.__chain__;
+
+                     if (chain || chainAll) {
+                       var result = object(this.__wrapped__),
+                           actions = result.__actions__ = copyArray(this.__actions__);
+                       actions.push({
+                         'func': func,
+                         'args': arguments,
+                         'thisArg': object
+                       });
+                       result.__chain__ = chainAll;
+                       return result;
+                     }
+
+                     return func.apply(object, arrayPush([this.value()], arguments));
+                   };
+                 }
+               });
+               return object;
+             }
+             /**
+              * Reverts the `_` variable to its previous value and returns a reference to
+              * the `lodash` function.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Util
+              * @returns {Function} Returns the `lodash` function.
+              * @example
+              *
+              * var lodash = _.noConflict();
+              */
 
-                   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 = [];
 
-                       for (k = 2; k < currPath.length; k += 2) {
-                         // k = 2 skips FROM
-                         pathVias.push(currPath[k]); // (path goes way-node-way...)
-                       }
+             function noConflict() {
+               if (root._ === this) {
+                 root._ = oldDash;
+               }
 
-                       var restrictionVias = [];
+               return this;
+             }
+             /**
+              * This method returns `undefined`.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.3.0
+              * @category Util
+              * @example
+              *
+              * _.times(2, _.noop);
+              * // => [undefined, undefined]
+              */
 
-                       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;
-                       }
-                     }
-                   }
+             function noop() {// No operation performed.
+             }
+             /**
+              * Creates a function that gets the argument at index `n`. If `n` is negative,
+              * the nth argument from the end is returned.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Util
+              * @param {number} [n=0] The index of the argument to return.
+              * @returns {Function} Returns the new pass-thru function.
+              * @example
+              *
+              * var func = _.nthArg(1);
+              * func('a', 'b', 'c', 'd');
+              * // => 'b'
+              *
+              * var func = _.nthArg(-2);
+              * func('a', 'b', 'c', 'd');
+              * // => 'c'
+              */
 
-                   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)
 
+             function nthArg(n) {
+               n = toInteger(n);
+               return baseRest(function (args) {
+                 return baseNth(args, n);
+               });
+             }
+             /**
+              * Creates a function that invokes `iteratees` with the arguments it receives
+              * and returns their results.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Util
+              * @param {...(Function|Function[])} [iteratees=[_.identity]]
+              *  The iteratees to invoke.
+              * @returns {Function} Returns the new function.
+              * @example
+              *
+              * var func = _.over([Math.max, Math.min]);
+              *
+              * func(1, 2, 3, 4);
+              * // => [4, 1]
+              */
 
-                   if (restrict && restrict.direct) break;
-                 }
 
-                 nextWays.push({
-                   way: way,
-                   restrict: restrict
-                 });
-               }
+             var over = createOver(arrayMap);
+             /**
+              * Creates a function that checks if **all** of the `predicates` return
+              * truthy when invoked with the arguments it receives.
+              *
+              * Following shorthands are possible for providing predicates.
+              * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
+              * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Util
+              * @param {...(Function|Function[])} [predicates=[_.identity]]
+              *  The predicates to check.
+              * @returns {Function} Returns the new function.
+              * @example
+              *
+              * var func = _.overEvery([Boolean, isFinite]);
+              *
+              * func('1');
+              * // => true
+              *
+              * func(null);
+              * // => false
+              *
+              * func(NaN);
+              * // => false
+              */
 
-               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)
+             var overEvery = createOver(arrayEvery);
+             /**
+              * Creates a function that checks if **any** of the `predicates` return
+              * truthy when invoked with the arguments it receives.
+              *
+              * Following shorthands are possible for providing predicates.
+              * Pass an `Object` and it will be used as an parameter for `_.matches` to create the predicate.
+              * Pass an `Array` of parameters for `_.matchesProperty` and the predicate will be created using them.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Util
+              * @param {...(Function|Function[])} [predicates=[_.identity]]
+              *  The predicates to check.
+              * @returns {Function} Returns the new function.
+              * @example
+              *
+              * var func = _.overSome([Boolean, isFinite]);
+              *
+              * func('1');
+              * // => true
+              *
+              * func(null);
+              * // => true
+              *
+              * func(NaN);
+              * // => false
+              *
+              * var matchesFunc = _.overSome([{ 'a': 1 }, { 'a': 2 }])
+              * var matchesPropertyFunc = _.overSome([['a', 1], ['a', 2]])
+              */
 
-                 if (matchedRestriction && matchedRestriction.direct === false) {
-                   for (i = 0; i < turnPath.length; i++) {
-                     if (turnPath[i] === matchedRestriction.from) {
-                       turnPath = turnPath.slice(i);
-                       break;
-                     }
-                   }
-                 }
+             var overSome = createOver(arraySome);
+             /**
+              * Creates a function that returns the value at `path` of a given object.
+              *
+              * @static
+              * @memberOf _
+              * @since 2.4.0
+              * @category Util
+              * @param {Array|string} path The path of the property to get.
+              * @returns {Function} Returns the new accessor function.
+              * @example
+              *
+              * var objects = [
+              *   { 'a': { 'b': 2 } },
+              *   { 'a': { 'b': 1 } }
+              * ];
+              *
+              * _.map(objects, _.property('a.b'));
+              * // => [2, 1]
+              *
+              * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
+              * // => [1, 2]
+              */
 
-                 var turn = pathToTurn(turnPath);
+             function property(path) {
+               return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
+             }
+             /**
+              * The opposite of `_.property`; this method creates a function that returns
+              * the value at a given path of `object`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.0.0
+              * @category Util
+              * @param {Object} object The object to query.
+              * @returns {Function} Returns the new accessor function.
+              * @example
+              *
+              * var array = [0, 1, 2],
+              *     object = { 'a': array, 'b': array, 'c': array };
+              *
+              * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
+              * // => [2, 0]
+              *
+              * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
+              * // => [2, 0]
+              */
 
-                 if (turn) {
-                   if (matchedRestriction) {
-                     turn.restrictionID = matchedRestriction.id;
-                     turn.no = matchedRestriction.no;
-                     turn.only = matchedRestriction.only;
-                     turn.direct = matchedRestriction.direct;
-                   }
 
-                   turns.push(osmTurn(turn));
-                 }
+             function propertyOf(object) {
+               return function (path) {
+                 return object == null ? undefined$1 : baseGet(object, path);
+               };
+             }
+             /**
+              * Creates an array of numbers (positive and/or negative) progressing from
+              * `start` up to, but not including, `end`. A step of `-1` is used if a negative
+              * `start` is specified without an `end` or `step`. If `end` is not specified,
+              * it's set to `start` with `start` then set to `0`.
+              *
+              * **Note:** JavaScript follows the IEEE-754 standard for resolving
+              * floating-point values which can produce unexpected results.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Util
+              * @param {number} [start=0] The start of the range.
+              * @param {number} end The end of the range.
+              * @param {number} [step=1] The value to increment or decrement by.
+              * @returns {Array} Returns the range of numbers.
+              * @see _.inRange, _.rangeRight
+              * @example
+              *
+              * _.range(4);
+              * // => [0, 1, 2, 3]
+              *
+              * _.range(-4);
+              * // => [0, -1, -2, -3]
+              *
+              * _.range(1, 5);
+              * // => [1, 2, 3, 4]
+              *
+              * _.range(0, 20, 5);
+              * // => [0, 5, 10, 15]
+              *
+              * _.range(0, -4, -1);
+              * // => [0, -1, -2, -3]
+              *
+              * _.range(1, 4, 0);
+              * // => [1, 1, 1]
+              *
+              * _.range(0);
+              * // => []
+              */
 
-                 if (currPath[0] === currPath[2]) return; // if we made a u-turn - stop here
-               }
 
-               if (matchedRestriction && matchedRestriction.end) return; // don't advance any further
-               // which nodes can we step into?
+             var range = createRange();
+             /**
+              * This method is like `_.range` except that it populates values in
+              * descending order.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Util
+              * @param {number} [start=0] The start of the range.
+              * @param {number} end The end of the range.
+              * @param {number} [step=1] The value to increment or decrement by.
+              * @returns {Array} Returns the range of numbers.
+              * @see _.inRange, _.range
+              * @example
+              *
+              * _.rangeRight(4);
+              * // => [3, 2, 1, 0]
+              *
+              * _.rangeRight(-4);
+              * // => [-3, -2, -1, 0]
+              *
+              * _.rangeRight(1, 5);
+              * // => [4, 3, 2, 1]
+              *
+              * _.rangeRight(0, 20, 5);
+              * // => [15, 10, 5, 0]
+              *
+              * _.rangeRight(0, -4, -1);
+              * // => [-3, -2, -1, 0]
+              *
+              * _.rangeRight(1, 4, 0);
+              * // => [1, 1, 1]
+              *
+              * _.rangeRight(0);
+              * // => []
+              */
 
-               var n1 = vgraph.entity(entity.first());
-               var n2 = vgraph.entity(entity.last());
-               var dist = geoSphericalDistance(n1.loc, n2.loc);
-               var nextNodes = [];
+             var rangeRight = createRange(true);
+             /**
+              * This method returns a new empty array.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.13.0
+              * @category Util
+              * @returns {Array} Returns the new empty array.
+              * @example
+              *
+              * var arrays = _.times(2, _.stubArray);
+              *
+              * console.log(arrays);
+              * // => [[], []]
+              *
+              * console.log(arrays[0] === arrays[1]);
+              * // => false
+              */
 
-               if (currPath.length > 1) {
-                 if (dist > maxDistance) return; // the next node is too far
+             function stubArray() {
+               return [];
+             }
+             /**
+              * This method returns `false`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.13.0
+              * @category Util
+              * @returns {boolean} Returns `false`.
+              * @example
+              *
+              * _.times(2, _.stubFalse);
+              * // => [false, false]
+              */
 
-                 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
-               }
+             function stubFalse() {
+               return false;
+             }
+             /**
+              * This method returns a new empty object.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.13.0
+              * @category Util
+              * @returns {Object} Returns the new empty object.
+              * @example
+              *
+              * var objects = _.times(2, _.stubObject);
+              *
+              * console.log(objects);
+              * // => [{}, {}]
+              *
+              * console.log(objects[0] === objects[1]);
+              * // => false
+              */
 
-               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
-               }
 
-               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
+             function stubObject() {
+               return {};
+             }
+             /**
+              * This method returns an empty string.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.13.0
+              * @category Util
+              * @returns {string} Returns the empty string.
+              * @example
+              *
+              * _.times(2, _.stubString);
+              * // => ['', '']
+              */
 
-                   var isOnlyVia = false;
-                   var v = r.membersByRole('via');
 
-                   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);
+             function stubString() {
+               return '';
+             }
+             /**
+              * This method returns `true`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.13.0
+              * @category Util
+              * @returns {boolean} Returns `true`.
+              * @example
+              *
+              * _.times(2, _.stubTrue);
+              * // => [true, true]
+              */
 
-                       if (viaWay.first() === nextNode.id || viaWay.last() === nextNode.id) {
-                         isOnlyVia = true;
-                         break;
-                       }
-                     }
-                   }
 
-                   return isOnlyVia;
-                 });
-                 step(nextNode, currPath, currRestrictions.concat(fromRestrictions), false);
-               });
+             function stubTrue() {
+               return true;
              }
-           } // assumes path is alternating way-node-way of odd length
+             /**
+              * Invokes the iteratee `n` times, returning an array of the results of
+              * each invocation. The iteratee is invoked with one argument; (index).
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Util
+              * @param {number} n The number of times to invoke `iteratee`.
+              * @param {Function} [iteratee=_.identity] The function invoked per iteration.
+              * @returns {Array} Returns the array of results.
+              * @example
+              *
+              * _.times(3, String);
+              * // => ['0', '1', '2']
+              *
+              *  _.times(4, _.constant(0));
+              * // => [0, 0, 0, 0]
+              */
 
 
-           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];
+             function times(n, iteratee) {
+               n = toInteger(n);
 
-             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 (n < 1 || n > MAX_SAFE_INTEGER) {
+                 return [];
+               }
 
-               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
+               var index = MAX_ARRAY_LENGTH,
+                   length = nativeMin(n, MAX_ARRAY_LENGTH);
+               iteratee = getIteratee(iteratee);
+               n -= MAX_ARRAY_LENGTH;
+               var result = baseTimes(length, iteratee);
+
+               while (++index < n) {
+                 iteratee(index);
                }
+
+               return result;
              }
+             /**
+              * Converts `value` to a property path array.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Util
+              * @param {*} value The value to convert.
+              * @returns {Array} Returns the new property path array.
+              * @example
+              *
+              * _.toPath('a.b.c');
+              * // => ['a', 'b', 'c']
+              *
+              * _.toPath('a[0].b.c');
+              * // => ['a', '0', 'b', 'c']
+              */
 
-             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];
+             function toPath(value) {
+               if (isArray(value)) {
+                 return arrayMap(value, toKey);
+               }
+
+               return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
              }
-           }
-         };
+             /**
+              * Generates a unique ID. If `prefix` is given, the ID is appended to it.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Util
+              * @param {string} [prefix=''] The value to prefix the ID with.
+              * @returns {string} Returns the unique ID.
+              * @example
+              *
+              * _.uniqueId('contact_');
+              * // => 'contact_104'
+              *
+              * _.uniqueId();
+              * // => '105'
+              */
 
-         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;
-         }
+             function uniqueId(prefix) {
+               var id = ++idCounter;
+               return toString(prefix) + id;
+             }
+             /*------------------------------------------------------------------------*/
 
-         if (fromNode === toNode) {
-           return 'no_u_turn';
-         }
+             /**
+              * Adds two numbers.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.4.0
+              * @category Math
+              * @param {number} augend The first number in an addition.
+              * @param {number} addend The second number in an addition.
+              * @returns {number} Returns the total.
+              * @example
+              *
+              * _.add(6, 4);
+              * // => 10
+              */
 
-         if ((angle < 23 || angle > 336) && fromOneWay && toOneWay) {
-           return 'no_u_turn'; // wider tolerance for u-turn if both ways are oneway
-         }
 
-         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)
-         }
+             var add = createMathOperation(function (augend, addend) {
+               return augend + addend;
+             }, 0);
+             /**
+              * Computes `number` rounded up to `precision`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.10.0
+              * @category Math
+              * @param {number} number The number to round up.
+              * @param {number} [precision=0] The precision to round up to.
+              * @returns {number} Returns the rounded up number.
+              * @example
+              *
+              * _.ceil(4.006);
+              * // => 5
+              *
+              * _.ceil(6.004, 2);
+              * // => 6.01
+              *
+              * _.ceil(6040, -2);
+              * // => 6100
+              */
 
-         if (angle < 158) {
-           return 'no_right_turn';
-         }
+             var ceil = createRound('ceil');
+             /**
+              * Divide two numbers.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.7.0
+              * @category Math
+              * @param {number} dividend The first number in a division.
+              * @param {number} divisor The second number in a division.
+              * @returns {number} Returns the quotient.
+              * @example
+              *
+              * _.divide(6, 4);
+              * // => 1.5
+              */
 
-         if (angle > 202) {
-           return 'no_left_turn';
-         }
+             var divide = createMathOperation(function (dividend, divisor) {
+               return dividend / divisor;
+             }, 1);
+             /**
+              * Computes `number` rounded down to `precision`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.10.0
+              * @category Math
+              * @param {number} number The number to round down.
+              * @param {number} [precision=0] The precision to round down to.
+              * @returns {number} Returns the rounded down number.
+              * @example
+              *
+              * _.floor(4.006);
+              * // => 4
+              *
+              * _.floor(0.046, 2);
+              * // => 0.04
+              *
+              * _.floor(4060, -2);
+              * // => 4000
+              */
 
-         return 'no_straight_on';
-       }
+             var floor = createRound('floor');
+             /**
+              * Computes the maximum value of `array`. If `array` is empty or falsey,
+              * `undefined` is returned.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Math
+              * @param {Array} array The array to iterate over.
+              * @returns {*} Returns the maximum value.
+              * @example
+              *
+              * _.max([4, 2, 8, 6]);
+              * // => 8
+              *
+              * _.max([]);
+              * // => undefined
+              */
 
-       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';
+             function max(array) {
+               return array && array.length ? baseExtremum(array, identity, baseGt) : undefined$1;
              }
-           });
-           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.
+             /**
+              * This method is like `_.max` except that it accepts `iteratee` which is
+              * invoked for each element in `array` to generate the criterion by which
+              * the value is ranked. The iteratee is invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Math
+              * @param {Array} array The array to iterate over.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {*} Returns the maximum value.
+              * @example
+              *
+              * var objects = [{ 'n': 1 }, { 'n': 2 }];
+              *
+              * _.maxBy(objects, function(o) { return o.n; });
+              * // => { 'n': 2 }
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.maxBy(objects, 'n');
+              * // => { 'n': 2 }
+              */
 
-           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;
+             function maxBy(array, iteratee) {
+               return array && array.length ? baseExtremum(array, getIteratee(iteratee, 2), baseGt) : undefined$1;
+             }
+             /**
+              * Computes the mean of the values in `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Math
+              * @param {Array} array The array to iterate over.
+              * @returns {number} Returns the mean.
+              * @example
+              *
+              * _.mean([4, 2, 8, 6]);
+              * // => 5
+              */
 
-           while (polygons.length) {
-             extractUncontained(polygons);
-             polygons = polygons.filter(isContained);
-             contained = contained.filter(isContained).map(filterContained);
-           }
 
-           function isContained(d, i) {
-             return contained[i].some(function (val) {
-               return val;
-             });
-           }
+             function mean(array) {
+               return baseMean(array, identity);
+             }
+             /**
+              * This method is like `_.mean` except that it accepts `iteratee` which is
+              * invoked for each element in `array` to generate the value to be averaged.
+              * The iteratee is invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.7.0
+              * @category Math
+              * @param {Array} array The array to iterate over.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {number} Returns the mean.
+              * @example
+              *
+              * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
+              *
+              * _.meanBy(objects, function(o) { return o.n; });
+              * // => 5
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.meanBy(objects, 'n');
+              * // => 5
+              */
 
-           function filterContained(d) {
-             return d.filter(isContained);
-           }
 
-           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
+             function meanBy(array, iteratee) {
+               return baseMean(array, getIteratee(iteratee, 2));
+             }
+             /**
+              * Computes the minimum value of `array`. If `array` is empty or falsey,
+              * `undefined` is returned.
+              *
+              * @static
+              * @since 0.1.0
+              * @memberOf _
+              * @category Math
+              * @param {Array} array The array to iterate over.
+              * @returns {*} Returns the minimum value.
+              * @example
+              *
+              * _.min([4, 2, 8, 6]);
+              * // => 2
+              *
+              * _.min([]);
+              * // => undefined
+              */
 
 
-           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';
+             function min(array) {
+               return array && array.length ? baseExtremum(array, identity, baseLt) : undefined$1;
              }
+             /**
+              * This method is like `_.min` except that it accepts `iteratee` which is
+              * invoked for each element in `array` to generate the criterion by which
+              * the value is ranked. The iteratee is invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Math
+              * @param {Array} array The array to iterate over.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {*} Returns the minimum value.
+              * @example
+              *
+              * var objects = [{ 'n': 1 }, { 'n': 2 }];
+              *
+              * _.minBy(objects, function(o) { return o.n; });
+              * // => { 'n': 1 }
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.minBy(objects, 'n');
+              * // => { 'n': 1 }
+              */
 
-             if (members.some(isThisOuter)) {
-               relation = relation.mergeTags(way.tags);
-               graph = graph.replace(way.update({
-                 tags: {}
-               }));
+
+             function minBy(array, iteratee) {
+               return array && array.length ? baseExtremum(array, getIteratee(iteratee, 2), baseLt) : undefined$1;
              }
-           });
-           return graph.replace(relation.update({
-             members: members,
-             tags: utilObjectOmit(relation.tags, ['area'])
-           }));
-         };
+             /**
+              * Multiply two numbers.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.7.0
+              * @category Math
+              * @param {number} multiplier The first number in a multiplication.
+              * @param {number} multiplicand The second number in a multiplication.
+              * @returns {number} Returns the product.
+              * @example
+              *
+              * _.multiply(6, 4);
+              * // => 24
+              */
 
-         action.disabled = function (graph) {
-           var entities = groupEntities(graph);
 
-           if (entities.other.length > 0 || entities.closedWay.length + entities.multipolygon.length < 2) {
-             return 'not_eligible';
-           }
+             var multiply = createMathOperation(function (multiplier, multiplicand) {
+               return multiplier * multiplicand;
+             }, 1);
+             /**
+              * Computes `number` rounded to `precision`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.10.0
+              * @category Math
+              * @param {number} number The number to round.
+              * @param {number} [precision=0] The precision to round to.
+              * @returns {number} Returns the rounded number.
+              * @example
+              *
+              * _.round(4.006);
+              * // => 4
+              *
+              * _.round(4.006, 2);
+              * // => 4.01
+              *
+              * _.round(4060, -2);
+              * // => 4100
+              */
 
-           if (!entities.multipolygon.every(function (r) {
-             return r.isComplete(graph);
-           })) {
-             return 'incomplete_relation';
-           }
+             var round = createRound('round');
+             /**
+              * Subtract two numbers.
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Math
+              * @param {number} minuend The first number in a subtraction.
+              * @param {number} subtrahend The second number in a subtraction.
+              * @returns {number} Returns the difference.
+              * @example
+              *
+              * _.subtract(6, 4);
+              * // => 2
+              */
 
-           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;
-             });
+             var subtract = createMathOperation(function (minuend, subtrahend) {
+               return minuend - subtrahend;
+             }, 0);
+             /**
+              * Computes the sum of the values in `array`.
+              *
+              * @static
+              * @memberOf _
+              * @since 3.4.0
+              * @category Math
+              * @param {Array} array The array to iterate over.
+              * @returns {number} Returns the sum.
+              * @example
+              *
+              * _.sum([4, 2, 8, 6]);
+              * // => 20
+              */
 
-             if (sharedMultipolygons.length) {
-               // don't create a new multipolygon if it'd be redundant
-               return 'not_eligible';
+             function sum(array) {
+               return array && array.length ? baseSum(array, identity) : 0;
              }
-           } 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;
-       }
+             /**
+              * This method is like `_.sum` except that it accepts `iteratee` which is
+              * invoked for each element in `array` to generate the value to be summed.
+              * The iteratee is invoked with one argument: (value).
+              *
+              * @static
+              * @memberOf _
+              * @since 4.0.0
+              * @category Math
+              * @param {Array} array The array to iterate over.
+              * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
+              * @returns {number} Returns the sum.
+              * @example
+              *
+              * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
+              *
+              * _.sumBy(objects, function(o) { return o.n; });
+              * // => 20
+              *
+              * // The `_.property` iteratee shorthand.
+              * _.sumBy(objects, 'n');
+              * // => 20
+              */
 
-       var FORCED$2 = descriptors && fails(function () {
-         // eslint-disable-next-line es/no-object-getownpropertydescriptor -- safe
-         return Object.getOwnPropertyDescriptor(RegExp.prototype, 'flags').get.call({ dotAll: true, sticky: true }) !== 'sy';
-       });
 
-       // `RegExp.prototype.flags` getter
-       // https://tc39.es/ecma262/#sec-get-regexp.prototype.flags
-       if (FORCED$2) objectDefineProperty.f(RegExp.prototype, 'flags', {
-         configurable: true,
-         get: regexpFlags
-       });
+             function sumBy(array, iteratee) {
+               return array && array.length ? baseSum(array, getIteratee(iteratee, 2)) : 0;
+             }
+             /*------------------------------------------------------------------------*/
+             // Add methods that return wrapped values in chain sequences.
+
+
+             lodash.after = after;
+             lodash.ary = ary;
+             lodash.assign = assign;
+             lodash.assignIn = assignIn;
+             lodash.assignInWith = assignInWith;
+             lodash.assignWith = assignWith;
+             lodash.at = at;
+             lodash.before = before;
+             lodash.bind = bind;
+             lodash.bindAll = bindAll;
+             lodash.bindKey = bindKey;
+             lodash.castArray = castArray;
+             lodash.chain = chain;
+             lodash.chunk = chunk;
+             lodash.compact = compact;
+             lodash.concat = concat;
+             lodash.cond = cond;
+             lodash.conforms = conforms;
+             lodash.constant = constant;
+             lodash.countBy = countBy;
+             lodash.create = create;
+             lodash.curry = curry;
+             lodash.curryRight = curryRight;
+             lodash.debounce = debounce;
+             lodash.defaults = defaults;
+             lodash.defaultsDeep = defaultsDeep;
+             lodash.defer = defer;
+             lodash.delay = delay;
+             lodash.difference = difference;
+             lodash.differenceBy = differenceBy;
+             lodash.differenceWith = differenceWith;
+             lodash.drop = drop;
+             lodash.dropRight = dropRight;
+             lodash.dropRightWhile = dropRightWhile;
+             lodash.dropWhile = dropWhile;
+             lodash.fill = fill;
+             lodash.filter = filter;
+             lodash.flatMap = flatMap;
+             lodash.flatMapDeep = flatMapDeep;
+             lodash.flatMapDepth = flatMapDepth;
+             lodash.flatten = flatten;
+             lodash.flattenDeep = flattenDeep;
+             lodash.flattenDepth = flattenDepth;
+             lodash.flip = flip;
+             lodash.flow = flow;
+             lodash.flowRight = flowRight;
+             lodash.fromPairs = fromPairs;
+             lodash.functions = functions;
+             lodash.functionsIn = functionsIn;
+             lodash.groupBy = groupBy;
+             lodash.initial = initial;
+             lodash.intersection = intersection;
+             lodash.intersectionBy = intersectionBy;
+             lodash.intersectionWith = intersectionWith;
+             lodash.invert = invert;
+             lodash.invertBy = invertBy;
+             lodash.invokeMap = invokeMap;
+             lodash.iteratee = iteratee;
+             lodash.keyBy = keyBy;
+             lodash.keys = keys;
+             lodash.keysIn = keysIn;
+             lodash.map = map;
+             lodash.mapKeys = mapKeys;
+             lodash.mapValues = mapValues;
+             lodash.matches = matches;
+             lodash.matchesProperty = matchesProperty;
+             lodash.memoize = memoize;
+             lodash.merge = merge;
+             lodash.mergeWith = mergeWith;
+             lodash.method = method;
+             lodash.methodOf = methodOf;
+             lodash.mixin = mixin;
+             lodash.negate = negate;
+             lodash.nthArg = nthArg;
+             lodash.omit = omit;
+             lodash.omitBy = omitBy;
+             lodash.once = once;
+             lodash.orderBy = orderBy;
+             lodash.over = over;
+             lodash.overArgs = overArgs;
+             lodash.overEvery = overEvery;
+             lodash.overSome = overSome;
+             lodash.partial = partial;
+             lodash.partialRight = partialRight;
+             lodash.partition = partition;
+             lodash.pick = pick;
+             lodash.pickBy = pickBy;
+             lodash.property = property;
+             lodash.propertyOf = propertyOf;
+             lodash.pull = pull;
+             lodash.pullAll = pullAll;
+             lodash.pullAllBy = pullAllBy;
+             lodash.pullAllWith = pullAllWith;
+             lodash.pullAt = pullAt;
+             lodash.range = range;
+             lodash.rangeRight = rangeRight;
+             lodash.rearg = rearg;
+             lodash.reject = reject;
+             lodash.remove = remove;
+             lodash.rest = rest;
+             lodash.reverse = reverse;
+             lodash.sampleSize = sampleSize;
+             lodash.set = set;
+             lodash.setWith = setWith;
+             lodash.shuffle = shuffle;
+             lodash.slice = slice;
+             lodash.sortBy = sortBy;
+             lodash.sortedUniq = sortedUniq;
+             lodash.sortedUniqBy = sortedUniqBy;
+             lodash.split = split;
+             lodash.spread = spread;
+             lodash.tail = tail;
+             lodash.take = take;
+             lodash.takeRight = takeRight;
+             lodash.takeRightWhile = takeRightWhile;
+             lodash.takeWhile = takeWhile;
+             lodash.tap = tap;
+             lodash.throttle = throttle;
+             lodash.thru = thru;
+             lodash.toArray = toArray;
+             lodash.toPairs = toPairs;
+             lodash.toPairsIn = toPairsIn;
+             lodash.toPath = toPath;
+             lodash.toPlainObject = toPlainObject;
+             lodash.transform = transform;
+             lodash.unary = unary;
+             lodash.union = union;
+             lodash.unionBy = unionBy;
+             lodash.unionWith = unionWith;
+             lodash.uniq = uniq;
+             lodash.uniqBy = uniqBy;
+             lodash.uniqWith = uniqWith;
+             lodash.unset = unset;
+             lodash.unzip = unzip;
+             lodash.unzipWith = unzipWith;
+             lodash.update = update;
+             lodash.updateWith = updateWith;
+             lodash.values = values;
+             lodash.valuesIn = valuesIn;
+             lodash.without = without;
+             lodash.words = words;
+             lodash.wrap = wrap;
+             lodash.xor = xor;
+             lodash.xorBy = xorBy;
+             lodash.xorWith = xorWith;
+             lodash.zip = zip;
+             lodash.zipObject = zipObject;
+             lodash.zipObjectDeep = zipObjectDeep;
+             lodash.zipWith = zipWith; // Add aliases.
+
+             lodash.entries = toPairs;
+             lodash.entriesIn = toPairsIn;
+             lodash.extend = assignIn;
+             lodash.extendWith = assignInWith; // Add methods to `lodash.prototype`.
+
+             mixin(lodash, lodash);
+             /*------------------------------------------------------------------------*/
+             // Add methods that return unwrapped values in chain sequences.
+
+             lodash.add = add;
+             lodash.attempt = attempt;
+             lodash.camelCase = camelCase;
+             lodash.capitalize = capitalize;
+             lodash.ceil = ceil;
+             lodash.clamp = clamp;
+             lodash.clone = clone;
+             lodash.cloneDeep = cloneDeep;
+             lodash.cloneDeepWith = cloneDeepWith;
+             lodash.cloneWith = cloneWith;
+             lodash.conformsTo = conformsTo;
+             lodash.deburr = deburr;
+             lodash.defaultTo = defaultTo;
+             lodash.divide = divide;
+             lodash.endsWith = endsWith;
+             lodash.eq = eq;
+             lodash.escape = escape;
+             lodash.escapeRegExp = escapeRegExp;
+             lodash.every = every;
+             lodash.find = find;
+             lodash.findIndex = findIndex;
+             lodash.findKey = findKey;
+             lodash.findLast = findLast;
+             lodash.findLastIndex = findLastIndex;
+             lodash.findLastKey = findLastKey;
+             lodash.floor = floor;
+             lodash.forEach = forEach;
+             lodash.forEachRight = forEachRight;
+             lodash.forIn = forIn;
+             lodash.forInRight = forInRight;
+             lodash.forOwn = forOwn;
+             lodash.forOwnRight = forOwnRight;
+             lodash.get = get;
+             lodash.gt = gt;
+             lodash.gte = gte;
+             lodash.has = has;
+             lodash.hasIn = hasIn;
+             lodash.head = head;
+             lodash.identity = identity;
+             lodash.includes = includes;
+             lodash.indexOf = indexOf;
+             lodash.inRange = inRange;
+             lodash.invoke = invoke;
+             lodash.isArguments = isArguments;
+             lodash.isArray = isArray;
+             lodash.isArrayBuffer = isArrayBuffer;
+             lodash.isArrayLike = isArrayLike;
+             lodash.isArrayLikeObject = isArrayLikeObject;
+             lodash.isBoolean = isBoolean;
+             lodash.isBuffer = isBuffer;
+             lodash.isDate = isDate;
+             lodash.isElement = isElement;
+             lodash.isEmpty = isEmpty;
+             lodash.isEqual = isEqual;
+             lodash.isEqualWith = isEqualWith;
+             lodash.isError = isError;
+             lodash.isFinite = isFinite;
+             lodash.isFunction = isFunction;
+             lodash.isInteger = isInteger;
+             lodash.isLength = isLength;
+             lodash.isMap = isMap;
+             lodash.isMatch = isMatch;
+             lodash.isMatchWith = isMatchWith;
+             lodash.isNaN = isNaN;
+             lodash.isNative = isNative;
+             lodash.isNil = isNil;
+             lodash.isNull = isNull;
+             lodash.isNumber = isNumber;
+             lodash.isObject = isObject;
+             lodash.isObjectLike = isObjectLike;
+             lodash.isPlainObject = isPlainObject;
+             lodash.isRegExp = isRegExp;
+             lodash.isSafeInteger = isSafeInteger;
+             lodash.isSet = isSet;
+             lodash.isString = isString;
+             lodash.isSymbol = isSymbol;
+             lodash.isTypedArray = isTypedArray;
+             lodash.isUndefined = isUndefined;
+             lodash.isWeakMap = isWeakMap;
+             lodash.isWeakSet = isWeakSet;
+             lodash.join = join;
+             lodash.kebabCase = kebabCase;
+             lodash.last = last;
+             lodash.lastIndexOf = lastIndexOf;
+             lodash.lowerCase = lowerCase;
+             lodash.lowerFirst = lowerFirst;
+             lodash.lt = lt;
+             lodash.lte = lte;
+             lodash.max = max;
+             lodash.maxBy = maxBy;
+             lodash.mean = mean;
+             lodash.meanBy = meanBy;
+             lodash.min = min;
+             lodash.minBy = minBy;
+             lodash.stubArray = stubArray;
+             lodash.stubFalse = stubFalse;
+             lodash.stubObject = stubObject;
+             lodash.stubString = stubString;
+             lodash.stubTrue = stubTrue;
+             lodash.multiply = multiply;
+             lodash.nth = nth;
+             lodash.noConflict = noConflict;
+             lodash.noop = noop;
+             lodash.now = now;
+             lodash.pad = pad;
+             lodash.padEnd = padEnd;
+             lodash.padStart = padStart;
+             lodash.parseInt = parseInt;
+             lodash.random = random;
+             lodash.reduce = reduce;
+             lodash.reduceRight = reduceRight;
+             lodash.repeat = repeat;
+             lodash.replace = replace;
+             lodash.result = result;
+             lodash.round = round;
+             lodash.runInContext = runInContext;
+             lodash.sample = sample;
+             lodash.size = size;
+             lodash.snakeCase = snakeCase;
+             lodash.some = some;
+             lodash.sortedIndex = sortedIndex;
+             lodash.sortedIndexBy = sortedIndexBy;
+             lodash.sortedIndexOf = sortedIndexOf;
+             lodash.sortedLastIndex = sortedLastIndex;
+             lodash.sortedLastIndexBy = sortedLastIndexBy;
+             lodash.sortedLastIndexOf = sortedLastIndexOf;
+             lodash.startCase = startCase;
+             lodash.startsWith = startsWith;
+             lodash.subtract = subtract;
+             lodash.sum = sum;
+             lodash.sumBy = sumBy;
+             lodash.template = template;
+             lodash.times = times;
+             lodash.toFinite = toFinite;
+             lodash.toInteger = toInteger;
+             lodash.toLength = toLength;
+             lodash.toLower = toLower;
+             lodash.toNumber = toNumber;
+             lodash.toSafeInteger = toSafeInteger;
+             lodash.toString = toString;
+             lodash.toUpper = toUpper;
+             lodash.trim = trim;
+             lodash.trimEnd = trimEnd;
+             lodash.trimStart = trimStart;
+             lodash.truncate = truncate;
+             lodash.unescape = unescape;
+             lodash.uniqueId = uniqueId;
+             lodash.upperCase = upperCase;
+             lodash.upperFirst = upperFirst; // Add aliases.
+
+             lodash.each = forEach;
+             lodash.eachRight = forEachRight;
+             lodash.first = head;
+             mixin(lodash, function () {
+               var source = {};
+               baseForOwn(lodash, function (func, methodName) {
+                 if (!hasOwnProperty.call(lodash.prototype, methodName)) {
+                   source[methodName] = func;
+                 }
+               });
+               return source;
+             }(), {
+               'chain': false
+             });
+             /*------------------------------------------------------------------------*/
 
-       var fastDeepEqual = function equal(a, b) {
-         if (a === b) return true;
+             /**
+              * The semantic version number.
+              *
+              * @static
+              * @memberOf _
+              * @type {string}
+              */
 
-         if (a && b && _typeof(a) == 'object' && _typeof(b) == 'object') {
-           if (a.constructor !== b.constructor) return false;
-           var length, i, keys;
+             lodash.VERSION = VERSION; // Assign default placeholders.
 
-           if (Array.isArray(a)) {
-             length = a.length;
-             if (length != b.length) return false;
+             arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function (methodName) {
+               lodash[methodName].placeholder = lodash;
+             }); // Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
 
-             for (i = length; i-- !== 0;) {
-               if (!equal(a[i], b[i])) return false;
-             }
+             arrayEach(['drop', 'take'], function (methodName, index) {
+               LazyWrapper.prototype[methodName] = function (n) {
+                 n = n === undefined$1 ? 1 : nativeMax(toInteger(n), 0);
+                 var result = this.__filtered__ && !index ? new LazyWrapper(this) : this.clone();
 
-             return true;
-           }
+                 if (result.__filtered__) {
+                   result.__takeCount__ = nativeMin(n, result.__takeCount__);
+                 } else {
+                   result.__views__.push({
+                     'size': nativeMin(n, MAX_ARRAY_LENGTH),
+                     'type': methodName + (result.__dir__ < 0 ? 'Right' : '')
+                   });
+                 }
 
-           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;
+                 return result;
+               };
 
-           for (i = length; i-- !== 0;) {
-             if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
-           }
+               LazyWrapper.prototype[methodName + 'Right'] = function (n) {
+                 return this.reverse()[methodName](n).reverse();
+               };
+             }); // Add `LazyWrapper` methods that accept an `iteratee` value.
 
-           for (i = length; i-- !== 0;) {
-             var key = keys[i];
-             if (!equal(a[key], b[key])) return false;
-           }
+             arrayEach(['filter', 'map', 'takeWhile'], function (methodName, index) {
+               var type = index + 1,
+                   isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;
 
-           return true;
-         } // true if both NaN, false otherwise
+               LazyWrapper.prototype[methodName] = function (iteratee) {
+                 var result = this.clone();
 
+                 result.__iteratees__.push({
+                   'iteratee': getIteratee(iteratee, 3),
+                   'type': type
+                 });
 
-         return a !== a && b !== b;
-       };
+                 result.__filtered__ = result.__filtered__ || isFilter;
+                 return result;
+               };
+             }); // Add `LazyWrapper` methods for `_.head` and `_.last`.
 
-       // 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
+             arrayEach(['head', 'last'], function (methodName, index) {
+               var takeName = 'take' + (index ? 'Right' : '');
 
-       function LCS(buffer1, buffer2) {
-         var equivalenceClasses = {};
+               LazyWrapper.prototype[methodName] = function () {
+                 return this[takeName](1).value()[0];
+               };
+             }); // Add `LazyWrapper` methods for `_.initial` and `_.tail`.
 
-         for (var j = 0; j < buffer2.length; j++) {
-           var item = buffer2[j];
+             arrayEach(['initial', 'tail'], function (methodName, index) {
+               var dropName = 'drop' + (index ? '' : 'Right');
 
-           if (equivalenceClasses[item]) {
-             equivalenceClasses[item].push(j);
-           } else {
-             equivalenceClasses[item] = [j];
-           }
-         }
+               LazyWrapper.prototype[methodName] = function () {
+                 return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
+               };
+             });
 
-         var NULLRESULT = {
-           buffer1index: -1,
-           buffer2index: -1,
-           chain: null
-         };
-         var candidates = [NULLRESULT];
+             LazyWrapper.prototype.compact = function () {
+               return this.filter(identity);
+             };
 
-         for (var i = 0; i < buffer1.length; i++) {
-           var _item = buffer1[i];
-           var buffer2indices = equivalenceClasses[_item] || [];
-           var r = 0;
-           var c = candidates[0];
+             LazyWrapper.prototype.find = function (predicate) {
+               return this.filter(predicate).head();
+             };
 
-           for (var jx = 0; jx < buffer2indices.length; jx++) {
-             var _j = buffer2indices[jx];
-             var s = void 0;
+             LazyWrapper.prototype.findLast = function (predicate) {
+               return this.reverse().find(predicate);
+             };
 
-             for (s = r; s < candidates.length; s++) {
-               if (candidates[s].buffer2index < _j && (s === candidates.length - 1 || candidates[s + 1].buffer2index > _j)) {
-                 break;
+             LazyWrapper.prototype.invokeMap = baseRest(function (path, args) {
+               if (typeof path == 'function') {
+                 return new LazyWrapper(this);
                }
-             }
 
-             if (s < candidates.length) {
-               var newCandidate = {
-                 buffer1index: i,
-                 buffer2index: _j,
-                 chain: candidates[s]
-               };
+               return this.map(function (value) {
+                 return baseInvoke(value, path, args);
+               });
+             });
 
-               if (r === candidates.length) {
-                 candidates.push(c);
-               } else {
-                 candidates[r] = c;
-               }
+             LazyWrapper.prototype.reject = function (predicate) {
+               return this.filter(negate(getIteratee(predicate)));
+             };
 
-               r = s + 1;
-               c = newCandidate;
+             LazyWrapper.prototype.slice = function (start, end) {
+               start = toInteger(start);
+               var result = this;
 
-               if (r === candidates.length) {
-                 break; // no point in examining further (j)s
+               if (result.__filtered__ && (start > 0 || end < 0)) {
+                 return new LazyWrapper(result);
                }
-             }
-           }
 
-           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 (start < 0) {
+                 result = result.takeRight(-start);
+               } else if (start) {
+                 result = result.drop(start);
+               }
 
+               if (end !== undefined$1) {
+                 end = toInteger(end);
+                 result = end < 0 ? result.dropRight(-end) : result.take(end - start);
+               }
 
-         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.
+               return result;
+             };
 
+             LazyWrapper.prototype.takeRightWhile = function (predicate) {
+               return this.reverse().takeWhile(predicate).reverse();
+             };
 
-       function diffIndices(buffer1, buffer2) {
-         var lcs = LCS(buffer1, buffer2);
-         var result = [];
-         var tail1 = buffer1.length;
-         var tail2 = buffer2.length;
+             LazyWrapper.prototype.toArray = function () {
+               return this.take(MAX_ARRAY_LENGTH);
+             }; // Add `LazyWrapper` methods to `lodash.prototype`.
 
-         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;
 
-           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)
-             });
-           }
-         }
+             baseForOwn(LazyWrapper.prototype, function (func, methodName) {
+               var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
+                   isTaker = /^(?:head|last)$/.test(methodName),
+                   lodashFunc = lodash[isTaker ? 'take' + (methodName == 'last' ? 'Right' : '') : methodName],
+                   retUnwrapped = isTaker || /^find/.test(methodName);
 
-         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)
-       //
+               if (!lodashFunc) {
+                 return;
+               }
 
+               lodash.prototype[methodName] = function () {
+                 var value = this.__wrapped__,
+                     args = isTaker ? [1] : arguments,
+                     isLazy = value instanceof LazyWrapper,
+                     iteratee = args[0],
+                     useLazy = isLazy || isArray(value);
 
-       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 = [];
+                 var interceptor = function interceptor(value) {
+                   var result = lodashFunc.apply(lodash, arrayPush([value], args));
+                   return isTaker && chainAll ? result[0] : result;
+                 };
 
-         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])
+                 if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
+                   // Avoid lazy use if the iteratee has a "length" value other than `1`.
+                   isLazy = useLazy = false;
+                 }
 
-           });
-         }
+                 var chainAll = this.__chain__,
+                     isHybrid = !!this.__actions__.length,
+                     isUnwrapped = retUnwrapped && !chainAll,
+                     onlyLazy = isLazy && !isHybrid;
 
-         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;
+                 if (!retUnwrapped && useLazy) {
+                   value = onlyLazy ? value : new LazyWrapper(this);
+                   var result = func.apply(value, args);
 
-         function advanceTo(endOffset) {
-           if (endOffset > currOffset) {
-             results.push({
-               stable: true,
-               buffer: 'o',
-               bufferStart: currOffset,
-               bufferLength: endOffset - currOffset,
-               bufferContent: o.slice(currOffset, endOffset)
-             });
-             currOffset = endOffset;
-           }
-         }
+                   result.__actions__.push({
+                     'func': thru,
+                     'args': [interceptor],
+                     'thisArg': undefined$1
+                   });
 
-         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
+                   return new LodashWrapper(result, chainAll);
+                 }
 
-           while (hunks.length) {
-             var nextHunk = hunks[0];
-             var nextHunkStart = nextHunk.oStart;
-             if (nextHunkStart > regionEnd) break; // no overlap
+                 if (isUnwrapped && onlyLazy) {
+                   return func.apply(this, args);
+                 }
 
-             regionEnd = Math.max(regionEnd, nextHunkStart + nextHunk.oLength);
-             regionHunks.push(hunks.shift());
-           }
+                 result = this.thru(interceptor);
+                 return isUnwrapped ? isTaker ? result.value()[0] : result.value() : result;
+               };
+             }); // Add `Array` methods to `lodash.prototype`.
 
-           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]
-             };
+             arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function (methodName) {
+               var func = arrayProto[methodName],
+                   chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
+                   retUnwrapped = /^(?:pop|shift)$/.test(methodName);
 
-             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]);
-             }
+               lodash.prototype[methodName] = function () {
+                 var args = arguments;
 
-             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);
-           }
+                 if (retUnwrapped && !this.__chain__) {
+                   var value = this.value();
+                   return func.apply(isArray(value) ? value : [], args);
+                 }
 
-           currOffset = regionEnd;
-         }
+                 return this[chainName](function (value) {
+                   return func.apply(isArray(value) ? value : [], args);
+                 });
+               };
+             }); // Map minified method names to their real names.
 
-         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`
+             baseForOwn(LazyWrapper.prototype, function (func, methodName) {
+               var lodashFunc = lodash[methodName];
 
+               if (lodashFunc) {
+                 var key = lodashFunc.name + '';
 
-       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 = [];
+                 if (!hasOwnProperty.call(realNames, key)) {
+                   realNames[key] = [];
+                 }
 
-         function flushOk() {
-           if (okBuffer.length) {
-             results.push({
-               ok: okBuffer
+                 realNames[key].push({
+                   'name': methodName,
+                   'func': lodashFunc
+                 });
+               }
              });
-           }
+             realNames[createHybrid(undefined$1, WRAP_BIND_KEY_FLAG).name] = [{
+               'name': 'wrapper',
+               'func': undefined$1
+             }]; // Add methods to `LazyWrapper`.
 
-           okBuffer = [];
-         }
+             LazyWrapper.prototype.clone = lazyClone;
+             LazyWrapper.prototype.reverse = lazyReverse;
+             LazyWrapper.prototype.value = lazyValue; // Add chain sequence methods to the `lodash` wrapper.
 
-         function isFalseConflict(a, b) {
-           if (a.length !== b.length) return false;
+             lodash.prototype.at = wrapperAt;
+             lodash.prototype.chain = wrapperChain;
+             lodash.prototype.commit = wrapperCommit;
+             lodash.prototype.next = wrapperNext;
+             lodash.prototype.plant = wrapperPlant;
+             lodash.prototype.reverse = wrapperReverse;
+             lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue; // Add lazy aliases.
 
-           for (var i = 0; i < a.length; i++) {
-             if (a[i] !== b[i]) return false;
-           }
+             lodash.prototype.first = lodash.prototype.head;
 
-           return true;
-         }
+             if (symIterator) {
+               lodash.prototype[symIterator] = wrapperToIterator;
+             }
 
-         regions.forEach(function (region) {
-           if (region.stable) {
-             var _okBuffer;
+             return lodash;
+           };
+           /*--------------------------------------------------------------------------*/
+           // Export lodash.
 
-             (_okBuffer = okBuffer).push.apply(_okBuffer, _toConsumableArray(region.bufferContent));
-           } else {
-             if (options.excludeFalseConflicts && isFalseConflict(region.aContent, region.bContent)) {
-               var _okBuffer2;
 
-               (_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
-                 }
-               });
-             }
+           var _ = runInContext(); // Some AMD build optimizers, like r.js, check for condition patterns like:
+
+
+           if (freeModule) {
+             // Export for Node.js.
+             (freeModule.exports = _)._ = _; // Export for CommonJS support.
+
+             freeExports._ = _;
+           } else {
+             // Export to the global object.
+             root._ = _;
            }
-         });
-         flushOk();
-         return results;
-       }
+         }).call(commonjsGlobal);
+       })(lodash, lodash.exports);
 
        function actionMergeRemoteChanges(id, localGraph, remoteGraph, discardTags, formatUser) {
          discardTags = discardTags || {};
          var _conflicts = [];
 
          function user(d) {
-           return typeof formatUser === 'function' ? formatUser(d) : d;
+           return typeof formatUser === 'function' ? formatUser(d) : lodash.exports.escape(d);
          }
 
          function mergeLocation(remote, target) {
              });
            }
 
-           _conflicts.push(_t('merge_remote_changes.conflict.location', {
-             user: user(remote.user)
+           _conflicts.push(_t.html('merge_remote_changes.conflict.location', {
+             user: {
+               html: user(remote.user)
+             }
            }));
 
            return target;
                  nodes.push.apply(nodes, c.a);
                } else {
                  // changed both locally and remotely
-                 _conflicts.push(_t('merge_remote_changes.conflict.nodelist', {
-                   user: user(remote.user)
+                 _conflicts.push(_t.html('merge_remote_changes.conflict.nodelist', {
+                   user: {
+                     html: user(remote.user)
+                   }
                  }));
 
                  break;
                if (remote.visible) {
                  target = mergeLocation(remote, target);
                } else {
-                 _conflicts.push(_t('merge_remote_changes.conflict.deleted', {
-                   user: user(remote.user)
+                 _conflicts.push(_t.html('merge_remote_changes.conflict.deleted', {
+                   user: {
+                     html: user(remote.user)
+                   }
                  }));
                }
 
              });
            }
 
-           _conflicts.push(_t('merge_remote_changes.conflict.memberlist', {
-             user: user(remote.user)
+           _conflicts.push(_t.html('merge_remote_changes.conflict.memberlist', {
+             user: {
+               html: user(remote.user)
+             }
            }));
 
            return target;
                // changed remotely..
                if (o[k] !== a[k]) {
                  // changed locally..
-                 _conflicts.push(_t('merge_remote_changes.conflict.tags', {
+                 _conflicts.push(_t.html('merge_remote_changes.conflict.tags', {
                    tag: k,
                    local: a[k],
                    remote: b[k],
-                   user: user(remote.user)
+                   user: {
+                     html: user(remote.user)
+                   }
                  }));
                } else {
                  // unchanged locally, accept remote change..
 
                return graph.replace(target);
              } else {
-               _conflicts.push(_t('merge_remote_changes.conflict.deleted', {
-                 user: user(remote.user)
+               _conflicts.push(_t.html('merge_remote_changes.conflict.deleted', {
+                 user: {
+                   html: user(remote.user)
+                 }
                }));
 
                return graph; // do nothing
          return i0 > 0 ? s.slice(0, i0) + s.slice(i1 + 1) : s;
        }
 
-       var nativeToPrecision = 1.0.toPrecision;
+       var $$5 = _export;
+       var uncurryThis$3 = functionUncurryThis;
+       var fails$3 = fails$V;
+       var thisNumberValue = thisNumberValue$3;
 
-       var FORCED$1 = fails(function () {
+       var un$ToPrecision = uncurryThis$3(1.0.toPrecision);
+
+       var FORCED$1 = fails$3(function () {
          // IE7-
-         return nativeToPrecision.call(1, undefined) !== '1';
-       }) || !fails(function () {
+         return un$ToPrecision(1, undefined) !== '1';
+       }) || !fails$3(function () {
          // V8 ~ Android 4.3-
-         nativeToPrecision.call({});
+         un$ToPrecision({});
        });
 
        // `Number.prototype.toPrecision` method
        // https://tc39.es/ecma262/#sec-number.prototype.toprecision
-       _export({ target: 'Number', proto: true, forced: FORCED$1 }, {
+       $$5({ target: 'Number', proto: true, forced: FORCED$1 }, {
          toPrecision: function toPrecision(precision) {
            return precision === undefined
-             ? nativeToPrecision.call(thisNumberValue(this))
-             : nativeToPrecision.call(thisNumberValue(this), precision);
+             ? un$ToPrecision(thisNumberValue(this))
+             : un$ToPrecision(thisNumberValue(this), precision);
          }
        });
 
        }
 
        var locale;
-       var format;
+       var format$1;
        var formatPrefix;
        defaultLocale({
          thousands: ",",
        });
        function defaultLocale(definition) {
          locale = formatLocale(definition);
-         format = locale.format;
+         format$1 = locale.format;
          formatPrefix = locale.formatPrefix;
          return locale;
        }
              }
          }
 
-         return format(specifier);
+         return format$1(specifier);
        }
 
        function linearish(scale) {
          return initRange.apply(linearish(scale), arguments);
        }
 
-       // https://github.com/tc39/proposal-string-pad-start-end
-
-
-
-
-       var ceil = Math.ceil;
-
-       // `String.prototype.{ padStart, padEnd }` methods implementation
-       var createMethod = 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(fillLen / fillStr.length));
-           if (stringFiller.length > fillLen) stringFiller = stringFiller.slice(0, fillLen);
-           return IS_END ? S + stringFiller : stringFiller + S;
-         };
-       };
-
-       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)
-       };
-
+       var global$3 = global$1o;
+       var uncurryThis$2 = functionUncurryThis;
+       var fails$2 = fails$V;
        var padStart = stringPad.start;
 
+       var RangeError$2 = global$3.RangeError;
        var abs$1 = Math.abs;
        var DatePrototype = Date.prototype;
-       var getTime = DatePrototype.getTime;
-       var nativeDateToISOString = DatePrototype.toISOString;
+       var n$DateToISOString = DatePrototype.toISOString;
+       var getTime = uncurryThis$2(DatePrototype.getTime);
+       var getUTCDate = uncurryThis$2(DatePrototype.getUTCDate);
+       var getUTCFullYear = uncurryThis$2(DatePrototype.getUTCFullYear);
+       var getUTCHours = uncurryThis$2(DatePrototype.getUTCHours);
+       var getUTCMilliseconds = uncurryThis$2(DatePrototype.getUTCMilliseconds);
+       var getUTCMinutes = uncurryThis$2(DatePrototype.getUTCMinutes);
+       var getUTCMonth = uncurryThis$2(DatePrototype.getUTCMonth);
+       var getUTCSeconds = uncurryThis$2(DatePrototype.getUTCSeconds);
 
        // `Date.prototype.toISOString` method implementation
        // https://tc39.es/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));
+       var dateToIsoString = (fails$2(function () {
+         return n$DateToISOString.call(new Date(-5e13 - 1)) != '0385-07-25T07:06:39.999Z';
+       }) || !fails$2(function () {
+         n$DateToISOString.call(new Date(NaN));
        })) ? function toISOString() {
-         if (!isFinite(getTime.call(this))) throw RangeError('Invalid time value');
+         if (!isFinite(getTime(this))) throw RangeError$2('Invalid time value');
          var date = this;
-         var year = date.getUTCFullYear();
-         var milliseconds = date.getUTCMilliseconds();
+         var year = getUTCFullYear(date);
+         var milliseconds = getUTCMilliseconds(date);
          var sign = year < 0 ? '-' : year > 9999 ? '+' : '';
          return sign + padStart(abs$1(year), sign ? 6 : 4, 0) +
-           '-' + padStart(date.getUTCMonth() + 1, 2, 0) +
-           '-' + padStart(date.getUTCDate(), 2, 0) +
-           'T' + padStart(date.getUTCHours(), 2, 0) +
-           ':' + padStart(date.getUTCMinutes(), 2, 0) +
-           ':' + padStart(date.getUTCSeconds(), 2, 0) +
+           '-' + padStart(getUTCMonth(date) + 1, 2, 0) +
+           '-' + padStart(getUTCDate(date), 2, 0) +
+           'T' + padStart(getUTCHours(date), 2, 0) +
+           ':' + padStart(getUTCMinutes(date), 2, 0) +
+           ':' + padStart(getUTCSeconds(date), 2, 0) +
            '.' + padStart(milliseconds, 3, 0) +
            'Z';
-       } : nativeDateToISOString;
+       } : n$DateToISOString;
+
+       var $$4 = _export;
+       var toISOString = dateToIsoString;
 
        // `Date.prototype.toISOString` method
        // https://tc39.es/ecma262/#sec-date.prototype.toisostring
        // PhantomJS / old WebKit has a broken implementations
-       _export({ target: 'Date', proto: true, forced: Date.prototype.toISOString !== dateToIsoString }, {
-         toISOString: dateToIsoString
+       $$4({ target: 'Date', proto: true, forced: Date.prototype.toISOString !== toISOString }, {
+         toISOString: toISOString
        });
 
        function behaviorBreathe() {
          return behavior;
        }
 
-       // `String.prototype.repeat` method
-       // https://tc39.es/ecma262/#sec-string.prototype.repeat
-       _export({ target: 'String', proto: true }, {
-         repeat: stringRepeat
-       });
-
        /*
            `behaviorDrag` is like `d3_behavior.drag`, with the following differences:
 
            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, {
+               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t.html('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))();
+             context.ui().flash.duration(3000).iconName('#iD-icon-no').label(_t.html('self_intersection.error.' + errorID))();
            } else {
              if (nope) {
                // about to un-nope, remove hint
          return mode;
        }
 
+       var $$3 = _export;
+       var NativePromise = nativePromiseConstructor;
+       var fails$1 = fails$V;
+       var getBuiltIn = getBuiltIn$b;
+       var isCallable = isCallable$r;
+       var speciesConstructor = speciesConstructor$5;
+       var promiseResolve = promiseResolve$2;
+       var redefine$1 = redefine$h.exports;
+
        // 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 */ });
+       var NON_GENERIC = !!NativePromise && fails$1(function () {
+         // eslint-disable-next-line unicorn/no-thenable -- required for testing
+         NativePromise.prototype['finally'].call({ then: function () { /* empty */ } }, function () { /* empty */ });
        });
 
        // `Promise.prototype.finally` method
        // https://tc39.es/ecma262/#sec-promise.prototype.finally
-       _export({ target: 'Promise', proto: true, real: true, forced: NON_GENERIC }, {
+       $$3({ target: 'Promise', proto: true, real: true, forced: NON_GENERIC }, {
          'finally': function (onFinally) {
            var C = speciesConstructor(this, getBuiltIn('Promise'));
-           var isFunction = typeof onFinally == 'function';
+           var isFunction = isCallable(onFinally);
            return this.then(
              isFunction ? function (x) {
                return promiseResolve(C, onFinally()).then(function () { return x; });
        });
 
        // makes sure that native promise-based APIs `Promise#finally` properly works with patched `Promise#then`
-       if (typeof nativePromiseConstructor == 'function') {
+       if (isCallable(NativePromise)) {
          var method = getBuiltIn('Promise').prototype['finally'];
-         if (nativePromiseConstructor.prototype['finally'] !== method) {
-           redefine(nativePromiseConstructor.prototype, 'finally', method, { unsafe: true });
+         if (NativePromise.prototype['finally'] !== method) {
+           redefine$1(NativePromise.prototype, 'finally', method, { unsafe: true });
          }
        }
 
 
        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 (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]);
+             } else {
+               capture = unescape$3(capture);
              }
            }
 
          return capture;
 
          function linkErrorObject(d) {
-           return "<a class=\"error_object_link\">".concat(d, "</a>");
+           return {
+             html: "<a class=\"error_object_link\">".concat(d, "</a>")
+           };
          }
 
          function linkEntity(d) {
-           return "<a class=\"error_entity_link\">".concat(d, "</a>");
+           return {
+             html: "<a class=\"error_entity_link\">".concat(d, "</a>")
+           };
          }
 
          function linkURL(d) {
-           return "<a class=\"kr_external_link\" target=\"_blank\" href=\"".concat(d, "\">").concat(d, "</a>");
+           return {
+             html: "<a class=\"kr_external_link\" target=\"_blank\" href=\"".concat(d, "\">").concat(d, "</a>")
+           };
          } // arbitrary node list of form: #ID, #ID, #ID...
 
 
        }
 
        function linkErrorObject(d) {
-         return "<a class=\"error_object_link\">".concat(d, "</a>");
+         return {
+           html: "<a class=\"error_object_link\">".concat(d, "</a>")
+         };
        }
 
        function linkEntity(d) {
-         return "<a class=\"error_entity_link\">".concat(d, "</a>");
+         return {
+           html: "<a class=\"error_entity_link\">".concat(d, "</a>")
+         };
        }
 
        function pointAverage(points) {
          }
        };
 
-       var defaults$5 = 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
-           };
-         }
-
-         function changeDefaults(newDefaults) {
-           module.exports.defaults = newDefaults;
-         }
+       var defaults$5 = {exports: {}};
 
-         module.exports = {
-           defaults: getDefaults(),
-           getDefaults: getDefaults,
-           changeDefaults: changeDefaults
-         };
-       });
+       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
+       };
 
-       /**
-        * Helpers
-        */
        var escapeTest = /[&<>"']/;
        var escapeReplace = /[&<>"']/g;
        var escapeTestNoEncode = /[<>"']|&(?!#?\w+;)/;
          }
 
          if (base && !originIndependentUrl.test(href)) {
-           href = resolveUrl$1(base, href);
+           href = resolveUrl$2(base, href);
          }
 
          try {
        var protocol = /^([^:]+:)[\s\S]*$/;
        var domain = /^([^:]+:\/*[^/]*)[\s\S]*$/;
 
-       function resolveUrl$1(base, href) {
+       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_
          unescape: unescape$2,
          edit: edit$1,
          cleanUrl: cleanUrl$1,
-         resolveUrl: resolveUrl$1,
+         resolveUrl: resolveUrl$2,
          noopTest: noopTest$1,
          merge: merge$2,
          splitCells: splitCells$1,
          repeatString: repeatString$1
        };
 
-       var defaults$4 = defaults$5.defaults;
+       var defaults$4 = defaults$5.exports.defaults;
        var rtrim = helpers.rtrim,
            splitCells = helpers.splitCells,
            _escape = helpers.escape,
              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
 
-             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;
+             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\u0870-\u0887\u0889-\u088E\u08A0-\u08C9\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\u0C5D\u0C60\u0C61\u0C66-\u0C6F\u0C78-\u0C7E\u0C80\u0C85-\u0C8C\u0C8E-\u0C90\u0C92-\u0CA8\u0CAA-\u0CB3\u0CB5-\u0CB9\u0CBD\u0CDD\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-\u1711\u171F-\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-\u1B4C\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-\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-\uA48C\uA4D0-\uA4FD\uA500-\uA60C\uA610-\uA62B\uA640-\uA66E\uA67F-\uA69D\uA6A0-\uA6EF\uA717-\uA71F\uA722-\uA788\uA78B-\uA7CA\uA7D0\uA7D1\uA7D3\uA7D5-\uA7D9\uA7F2-\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\uDD70-\uDD7A\uDD7C-\uDD8A\uDD8C-\uDD92\uDD94\uDD95\uDD97-\uDDA1\uDDA3-\uDDB1\uDDB3-\uDDB9\uDDBB\uDDBC\uDE00-\uDF36\uDF40-\uDF55\uDF60-\uDF67\uDF80-\uDF85\uDF87-\uDFB0\uDFB2-\uDFBA]|\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\uDF70-\uDF81\uDFB0-\uDFCB\uDFE0-\uDFF6]|\uD804[\uDC03-\uDC37\uDC52-\uDC6F\uDC71\uDC72\uDC75\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\uDF40-\uDF46]|\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\uDEB0-\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]|\uD80B[\uDF90-\uDFF0]|[\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\uDE70-\uDEBE\uDEC0-\uDEC9\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]|\uD82B[\uDFF0-\uDFF3\uDFF5-\uDFFB\uDFFD\uDFFE]|\uD82C[\uDC00-\uDD22\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]|\uD837[\uDF00-\uDF1E]|\uD838[\uDD00-\uDD2C\uDD37-\uDD3D\uDD40-\uDD49\uDD4E\uDE90-\uDEAD\uDEC0-\uDEEB\uDEF0-\uDEF9]|\uD839[\uDFE0-\uDFE6\uDFE8-\uDFEB\uDFED\uDFEE\uDFF0-\uDFFE]|\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-\uDEDF\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF38\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] || '';
 
              if (!nextChar || nextChar && (prevChar === '' || this.rules.inline.punctuation.exec(prevChar))) {
          inline: inline$1
        };
 
-       var defaults$3 = defaults$5.defaults;
+       var Tokenizer$1 = Tokenizer_1;
+       var defaults$3 = defaults$5.exports.defaults;
        var block = rules.block,
            inline = rules.inline;
        var repeatString = helpers.repeatString;
            this.tokens = [];
            this.tokens.links = Object.create(null);
            this.options = options || defaults$3;
-           this.options.tokenizer = this.options.tokenizer || new Tokenizer_1();
+           this.options.tokenizer = this.options.tokenizer || new Tokenizer$1();
            this.tokenizer = this.options.tokenizer;
            this.tokenizer.options = this.options;
            var rules = {
          return Lexer;
        }();
 
-       var defaults$2 = defaults$5.defaults;
+       var defaults$2 = defaults$5.exports.defaults;
        var cleanUrl = helpers.cleanUrl,
            escape$2 = helpers.escape;
        /**
          return Renderer;
        }();
 
-       /**
-        * TextRenderer
-        * returns only the textual part of the token
-        */
        var TextRenderer_1 = /*#__PURE__*/function () {
          function TextRenderer() {
            _classCallCheck$1(this, TextRenderer);
          return TextRenderer;
        }();
 
-       /**
-        * Slugger generates header id
-        */
        var Slugger_1 = /*#__PURE__*/function () {
          function Slugger() {
            _classCallCheck$1(this, Slugger);
          return Slugger;
        }();
 
-       var defaults$1 = defaults$5.defaults;
+       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
            _classCallCheck$1(this, Parser);
 
            this.options = options || defaults$1;
-           this.options.renderer = this.options.renderer || new Renderer_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();
+           this.textRenderer = new TextRenderer$1();
+           this.slugger = new Slugger$1();
          }
          /**
           * Static Parse Method
          return Parser;
        }();
 
+       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.getDefaults,
-           changeDefaults = defaults$5.changeDefaults,
-           defaults = defaults$5.defaults;
+       var getDefaults = defaults$5.exports.getDefaults,
+           changeDefaults = defaults$5.exports.changeDefaults,
+           defaults = defaults$5.exports.defaults;
        /**
         * Marked
         */
            var tokens;
 
            try {
-             tokens = Lexer_1.lex(src, opt);
+             tokens = Lexer.lex(src, opt);
            } catch (e) {
              return callback(e);
            }
                    marked.walkTokens(tokens, opt.walkTokens);
                  }
 
-                 out = Parser_1.parse(tokens, opt);
+                 out = Parser.parse(tokens, opt);
                } catch (e) {
                  err = e;
                }
          }
 
          try {
-           var _tokens = Lexer_1.lex(src, opt);
+           var _tokens = Lexer.lex(src, opt);
 
            if (opt.walkTokens) {
              marked.walkTokens(_tokens, opt.walkTokens);
            }
 
-           return Parser_1.parse(_tokens, opt);
+           return Parser.parse(_tokens, opt);
          } catch (e) {
            e.message += '\nPlease report this to https://github.com/markedjs/marked.';
 
 
          if (extension.renderer) {
            (function () {
-             var renderer = marked.defaults.renderer || new Renderer_1();
+             var renderer = marked.defaults.renderer || new Renderer();
 
              var _loop = function _loop(prop) {
                var prevRenderer = renderer[prop];
 
          if (extension.tokenizer) {
            (function () {
-             var tokenizer = marked.defaults.tokenizer || new Tokenizer_1();
+             var tokenizer = marked.defaults.tokenizer || new Tokenizer();
 
              var _loop2 = function _loop2(prop) {
                var prevTokenizer = tokenizer[prop];
          checkSanitizeDeprecation(opt);
 
          try {
-           var tokens = Lexer_1.lexInline(src, opt);
+           var tokens = Lexer.lexInline(src, opt);
 
            if (opt.walkTokens) {
              marked.walkTokens(tokens, opt.walkTokens);
            }
 
-           return Parser_1.parseInline(tokens, opt);
+           return Parser.parseInline(tokens, opt);
          } catch (e) {
            e.message += '\nPlease report this to https://github.com/markedjs/marked.';
 
         */
 
 
-       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.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;
 
          }
        };
 
+       var ieee754$1 = {};
+
        /*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */
-       var read$6 = function read(buffer, offset, isLE, mLen, nBytes) {
+
+       ieee754$1.read = function (buffer, offset, isLE, mLen, nBytes) {
          var e, m;
          var eLen = nBytes * 8 - mLen - 1;
          var eMax = (1 << eLen) - 1;
          return (s ? -1 : 1) * m * Math.pow(2, e - mLen);
        };
 
-       var write$6 = function write(buffer, value, offset, isLE, mLen, nBytes) {
+       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;
          buffer[offset + i - d] |= s * 128;
        };
 
-       var ieee754 = {
-         read: read$6,
-         write: write$6
-       };
-
        var pbf = Pbf;
+       var ieee754 = ieee754$1;
 
        function Pbf(buf) {
          this.buf = ArrayBuffer.isView && ArrayBuffer.isView(buf) ? buf : new Uint8Array(buf || 0);
          return pos;
        }
 
-       var pointGeometry = Point;
+       var vectorTile = {};
+
+       var pointGeometry = Point$1;
        /**
         * A standalone point geometry with useful accessor, comparison, and
         * modification methods.
         * var point = new Point(-77, 38);
         */
 
-       function Point(x, y) {
+       function Point$1(x, y) {
          this.x = x;
          this.y = y;
        }
 
-       Point.prototype = {
+       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(this.x, this.y);
+           return new Point$1(this.x, this.y);
          },
 
          /**
         * var point = new Point(0, 1);
         */
 
-       Point.convert = function (a) {
-         if (a instanceof Point) {
+       Point$1.convert = function (a) {
+         if (a instanceof Point$1) {
            return a;
          }
 
          if (Array.isArray(a)) {
-           return new Point(a[0], a[1]);
+           return new Point$1(a[0], a[1]);
          }
 
          return a;
        };
 
+       var Point = pointGeometry;
        var vectortilefeature = VectorTileFeature$1;
 
        function VectorTileFeature$1(pbf, end, extent, keys, values) {
                line = [];
              }
 
-             line.push(new pointGeometry(x, y));
+             line.push(new Point(x, y));
            } else if (cmd === 7) {
              // Workaround for https://github.com/mapbox/mapnik-vector-tile/issues/90
              if (line) {
          return sum;
        }
 
+       var VectorTileFeature = vectortilefeature;
        var vectortilelayer = VectorTileLayer$1;
 
        function VectorTileLayer$1(pbf, end) {
 
          var end = this._pbf.readVarint() + this._pbf.pos;
 
-         return new vectortilefeature(this._pbf, end, this.extent, this._keys, this._values);
+         return new VectorTileFeature(this._pbf, end, this.extent, this._keys, this._values);
        };
 
+       var VectorTileLayer = vectortilelayer;
        var vectortile = VectorTile$1;
 
        function VectorTile$1(pbf, end) {
 
        function readTile(tag, layers, pbf) {
          if (tag === 3) {
-           var layer = new vectortilelayer(pbf, pbf.readVarint() + pbf.pos);
+           var layer = new VectorTileLayer(pbf, pbf.readVarint() + pbf.pos);
            if (layer.length) layers[layer.name] = layer;
          }
        }
 
-       var VectorTile = vectortile;
-       var VectorTileFeature = vectortilefeature;
-       var VectorTileLayer = vectortilelayer;
-       var vectorTile = {
-         VectorTile: VectorTile,
-         VectorTileFeature: VectorTileFeature,
-         VectorTileLayer: VectorTileLayer
-       };
+       var VectorTile = vectorTile.VectorTile = vectortile;
+       vectorTile.VectorTileFeature = vectortilefeature;
+       vectorTile.VectorTileLayer = vectortilelayer;
 
        var accessToken = 'MLY|4100327730013843|5bb78b81720791946a9a7b956c57b7cf';
        var apiUrl = 'https://graph.mapillary.com/';
 
          this.id = generateID.apply(this); // generated - see below
 
+         this.key = generateKey.apply(this); // generated - see below (call after generating this.id)
+
          this.autoFix = null; // generated - if autofix exists, will be set below
          // A unique, deterministic string hash.
          // Issues with identical id values are considered identical.
            }
 
            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 generateKey() {
+           return this.id + ':' + Date.now().toString(); // include time of creation
          }
 
          this.extent = function (resolver) {
          .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());
        }
 
-       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 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/laboratory","healthcare/physiotherapist","healthcare/sample_collection","healthcare/dialysis"],confectionery:["shop/candy","shop/chocolate","shop/confectionery"],convenience:["shop/beauty","shop/chemist","shop/convenience","shop/cosmetics","shop/grocery","shop/newsagent","shop/perfumery"],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/boutique","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"],parcel_locker:["amenity/parcel_locker","amenity/vending_machine"],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"],storage:["shop/storage_units","shop/storage_rental"],substation:["power/station","power/substation","power/sub_station"],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"],weight_loss:["amenity/clinic","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 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 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$","^(driveway|el árbol|fountain|golf|government|graveyard)$","^(fixme|n\\s?\\/?\\s?a|name|no\\s?name|none|null|temporary|test|unknown)$","^(hofladen|librairie|magazine?|maison)$","^(mobile home|skate)?\\s?park$","^(obuwie|pond|pool|sale|shops?|sklep|stores?)$","^\\?+$","^private$","^tattoo( studio)?$","^windmill$","^церковная( лавка)?$"];
        var genericWordsJSON = {
        genericWords: genericWords
        };
              if (that.matchIndex) return; // it was built already
 
              that.matchIndex = new Map();
+             var seenTree = new Map(); // warn if the same [k, v, nsimple] appears in multiple trees - #5625
+
              Object.keys(data).forEach(function (tkv) {
                var category = data[tkv];
                var parts = tkv.split('/', 3); // tkv = "tree/key/value"
 
                    if (primaryName.test(osmkey)) {
                      kvTags.forEach(function (kv) {
-                       return insertName('primary', kv, simplify$1(osmvalue), item.id);
+                       return insertName('primary', t, kv, simplify$1(osmvalue), item.id);
                      });
                    } else if (alternateName.test(osmkey)) {
                      kvTags.forEach(function (kv) {
-                       return insertName('alternate', kv, simplify$1(osmvalue), item.id);
+                       return insertName('alternate', t, kv, simplify$1(osmvalue), item.id);
                      });
                    }
                  }); // Index `matchNames` after indexing all other names..
                      var inAlternate = alternateLeaf && alternateLeaf.has(item.id);
 
                      if (!inPrimary && !inAlternate) {
-                       insertName('alternate', kv, nsimple, item.id);
+                       insertName('alternate', t, kv, nsimple, item.id);
                        keepMatchNames.add(matchName);
                      }
                    });
              }); // each tkv
              // Insert this item into the matchIndex
 
-             function insertName(which, kv, nsimple, itemID) {
-               if (!nsimple) return;
+             function insertName(which, t, kv, nsimple, itemID) {
+               if (!nsimple) {
+                 that.warnings.push("Warning: skipping empty ".concat(which, " name for item ").concat(t, "/").concat(kv, ": ").concat(itemID));
+                 return;
+               }
+
                var branch = that.matchIndex.get(kv);
 
                if (!branch) {
                }
 
                leaf.add(itemID); // insert
+               // check for duplicates - #5625
+
+               if (!/yes$/.test(kv)) {
+                 // ignore genericKV like amenity/yes, building/yes, etc
+                 var kvnsimple = "".concat(kv, "/").concat(nsimple);
+                 var existing = seenTree.get(kvnsimple);
+
+                 if (existing && existing !== t) {
+                   var items = Array.from(leaf);
+                   that.warnings.push("Duplicate cache key \"".concat(kvnsimple, "\" in trees \"").concat(t, "\" and \"").concat(existing, "\", check items: ").concat(items));
+                   return;
+                 }
+
+                 seenTree.set(kvnsimple, t);
+               }
              } // For certain categories we do not want to match generic KV pairs like `building/yes` or `amenity/yes`
 
 
              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?
-
-                 var resolved;
-
-                 try {
-                   resolved = loco.resolveLocationSet(item.locationSet); // resolve a feature for this locationSet
-                 } catch (err) {
-                   console.warn("buildLocationIndex: ".concat(err.message)); // couldn't resolve
-                 }
-
-                 if (!resolved || !resolved.id) return;
-                 that.itemLocation.set(item.id, resolved.id); // link it to the item
-
-                 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..
-
-                 var feature = _cloneDeep(resolved.feature);
-
-                 feature.id = resolved.id; // Important: always use the locationSet `id` (`+[Q30]`), not the feature `id` (`Q30`)
-
-                 feature.properties.id = resolved.id;
-
-                 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;
-                 }
-
-                 that.locationSets.set(resolved.id, feature);
-               });
-             });
-             that.locationIndex = whichPolygon_1({
-               type: 'FeatureCollection',
-               features: _toConsumableArray(that.locationSets.values())
-             });
-
-             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;
-
-             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 matchLocations;
-
-             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);
-             }
-
-             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;
-
-                 for (var i = 0; i < matchGroup.length; i++) {
-                   var otherkv = matchGroup[i];
-                   if (otherkv === kv) continue; // skip self
-
-                   didMatch = tryMatch(which, otherkv);
-                   if (didMatch) return;
-                 }
-               } // If finished 'exclude' pass and still haven't matched anything, try the global `genericWords.json` patterns
-
-
-               if (which === 'exclude') {
-                 var regex = _toConsumableArray(that.genericWords.values()).find(function (regex) {
-                   return regex.test(n);
-                 });
-
-                 if (regex) {
-                   results.push({
-                     match: 'excludeGeneric',
-                     pattern: String(regex)
-                   }); // note no `branch`, no `kv`
-
-                   return;
-                 }
-               }
-             }
-
-             function tryMatch(which, kv) {
-               var branch = that.matchIndex.get(kv);
-               if (!branch) return;
-
-               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;
-                 }
-
-                 regex = _toConsumableArray(branch.excludeGeneric.values()).find(function (regex) {
-                   return regex.test(n);
-                 });
-
-                 if (regex) {
-                   results.push({
-                     match: 'excludeGeneric',
-                     pattern: String(regex),
-                     kv: kv
-                   });
-                   return;
-                 }
-
-                 return;
-               }
-
-               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)
-
-               var hits = Array.from(leaf).map(function (itemID) {
-                 var area = Infinity;
-
-                 if (that.itemLocation && that.locationSets) {
-                   var location = that.locationSets.get(that.itemLocation.get(itemID));
-                   area = location && location.properties.area || Infinity;
-                 }
-
-                 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;
-               }
-
-               if (!hits.length) return; // push results
-
-               hits.sort(sortFn).forEach(function (hit) {
-                 if (seen.has(hit.itemID)) return;
-                 seen.add(hit.itemID);
-                 results.push(hit);
-               });
-               return true;
-
-               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.
-
-
-               function byAreaAscending(hitA, hitB) {
-                 return hitA.area - hitB.area;
-               } // Sort larger (more worldwide) locations first.
-
-
-               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 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');
-       }
-
-       /** Detect free variable `global` from Node.js. */
-       var freeGlobal = (typeof global === "undefined" ? "undefined" : _typeof(global)) == 'object' && global && global.Object === Object && global;
-
-       /** Detect free variable `self`. */
-
-       var freeSelf = (typeof self === "undefined" ? "undefined" : _typeof(self)) == 'object' && self && self.Object === Object && self;
-       /** Used as a reference to the global object. */
-
-       var root = freeGlobal || freeSelf || Function('return this')();
-
-       /**
-        * 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 now = function now() {
-         return root.Date.now();
-       };
-
-       /** 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.
-        */
-
-       function trimmedEndIndex(string) {
-         var index = string.length;
-
-         while (index-- && reWhitespace.test(string.charAt(index))) {}
-
-         return index;
-       }
-
-       /** Used to match leading whitespace. */
-
-       var reTrimStart = /^\s+/;
-       /**
-        * The base implementation of `_.trim`.
-        *
-        * @private
-        * @param {string} string The string to trim.
-        * @returns {string} Returns the trimmed string.
-        */
-
-       function baseTrim(string) {
-         return string ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '') : string;
-       }
-
-       /** Built-in value references. */
-
-       var _Symbol = root.Symbol;
-
-       /** Used for built-in method references. */
-
-       var objectProto$1 = Object.prototype;
-       /** Used to check objects for own properties. */
-
-       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 nativeObjectToString$1 = objectProto$1.toString;
-       /** Built-in value references. */
-
-       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`.
-        */
-
-       function getRawTag(value) {
-         var isOwn = hasOwnProperty$2.call(value, symToStringTag$1),
-             tag = value[symToStringTag$1];
-
-         try {
-           value[symToStringTag$1] = undefined;
-           var unmasked = true;
-         } catch (e) {}
-
-         var result = nativeObjectToString$1.call(value);
-
-         if (unmasked) {
-           if (isOwn) {
-             value[symToStringTag$1] = tag;
-           } else {
-             delete value[symToStringTag$1];
-           }
-         }
-
-         return result;
-       }
-
-       /** 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 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.
-        */
-
-       function objectToString(value) {
-         return nativeObjectToString.call(value);
-       }
-
-       /** `Object#toString` result references. */
-
-       var nullTag = '[object Null]',
-           undefinedTag = '[object Undefined]';
-       /** Built-in value references. */
-
-       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`.
-        */
-
-       function baseGetTag(value) {
-         if (value == null) {
-           return value === undefined ? undefinedTag : nullTag;
-         }
-
-         return symToStringTag && symToStringTag in Object(value) ? getRawTag(value) : objectToString(value);
-       }
+               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?
 
-       /**
-        * 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 resolved;
 
-       /** `Object#toString` result references. */
+                 try {
+                   resolved = loco.resolveLocationSet(item.locationSet); // resolve a feature for this locationSet
+                 } catch (err) {
+                   console.warn("buildLocationIndex: ".concat(err.message)); // couldn't resolve
+                 }
 
-       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 (!resolved || !resolved.id) return;
+                 that.itemLocation.set(item.id, resolved.id); // link it to the item
 
-       function isSymbol(value) {
-         return _typeof(value) == 'symbol' || isObjectLike(value) && baseGetTag(value) == symbolTag;
-       }
+                 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..
 
-       /** Used as references for various `Number` constants. */
+                 var feature = _cloneDeep(resolved.feature);
 
-       var NAN = 0 / 0;
-       /** Used to detect bad signed hexadecimal string values. */
+                 feature.id = resolved.id; // Important: always use the locationSet `id` (`+[Q30]`), not the feature `id` (`Q30`)
 
-       var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
-       /** Used to detect binary string values. */
+                 feature.properties.id = resolved.id;
 
-       var reIsBinary = /^0b[01]+$/i;
-       /** Used to detect octal string values. */
+                 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;
+                 }
 
-       var reIsOctal = /^0o[0-7]+$/i;
-       /** Built-in method references without a dependency on `root`. */
+                 that.locationSets.set(resolved.id, feature);
+               });
+             });
+             that.locationIndex = whichPolygon_1({
+               type: 'FeatureCollection',
+               features: _toConsumableArray(that.locationSets.values())
+             });
 
-       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
-        */
+             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`
+           //
+           //
 
-       function toNumber(value) {
-         if (typeof value == 'number') {
-           return value;
-         }
+         }, {
+           key: "match",
+           value: function match(k, v, n, loc) {
+             var that = this;
 
-         if (isSymbol(value)) {
-           return NAN;
-         }
+             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.
 
-         if (isObject$2(value)) {
-           var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
-           value = isObject$2(other) ? other + '' : other;
-         }
 
-         if (typeof value != 'string') {
-           return value === 0 ? value : +value;
-         }
+             var matchLocations;
 
-         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 (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);
+             }
 
-       /** Error message constants. */
+             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;
 
-       var FUNC_ERROR_TEXT$1 = 'Expected a function';
-       /* Built-in method references for those with the same name as other `lodash` methods. */
+             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..
 
-       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);
-        */
+               for (var mg in matchGroups) {
+                 var matchGroup = matchGroups[mg];
+                 var inGroup = matchGroup.some(function (otherkv) {
+                   return otherkv === kv;
+                 });
+                 if (!inGroup) continue;
 
-       function debounce(func, wait, options) {
-         var lastArgs,
-             lastThis,
-             maxWait,
-             result,
-             timerId,
-             lastCallTime,
-             lastInvokeTime = 0,
-             leading = false,
-             maxing = false,
-             trailing = true;
+                 for (var i = 0; i < matchGroup.length; i++) {
+                   var otherkv = matchGroup[i];
+                   if (otherkv === kv) continue; // skip self
 
-         if (typeof func != 'function') {
-           throw new TypeError(FUNC_ERROR_TEXT$1);
-         }
+                   didMatch = tryMatch(which, otherkv);
+                   if (didMatch) return;
+                 }
+               } // If finished 'exclude' pass and still haven't matched anything, try the global `genericWords.json` patterns
 
-         wait = toNumber(wait) || 0;
 
-         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;
-         }
+               if (which === 'exclude') {
+                 var regex = _toConsumableArray(that.genericWords.values()).find(function (regex) {
+                   return regex.test(n);
+                 });
 
-         function invokeFunc(time) {
-           var args = lastArgs,
-               thisArg = lastThis;
-           lastArgs = lastThis = undefined;
-           lastInvokeTime = time;
-           result = func.apply(thisArg, args);
-           return result;
-         }
+                 if (regex) {
+                   results.push({
+                     match: 'excludeGeneric',
+                     pattern: String(regex)
+                   }); // note no `branch`, no `kv`
 
-         function leadingEdge(time) {
-           // Reset any `maxWait` timer.
-           lastInvokeTime = time; // Start the timer for the trailing edge.
+                   return;
+                 }
+               }
+             }
 
-           timerId = setTimeout(timerExpired, wait); // Invoke the leading edge.
+             function tryMatch(which, kv) {
+               var branch = that.matchIndex.get(kv);
+               if (!branch) return;
 
-           return leading ? invokeFunc(time) : result;
-         }
+               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);
+                 });
 
-         function remainingWait(time) {
-           var timeSinceLastCall = time - lastCallTime,
-               timeSinceLastInvoke = time - lastInvokeTime,
-               timeWaiting = wait - timeSinceLastCall;
-           return maxing ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke) : timeWaiting;
-         }
+                 if (regex) {
+                   results.push({
+                     match: 'excludeNamed',
+                     pattern: String(regex),
+                     kv: kv
+                   });
+                   return;
+                 }
 
-         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.
+                 regex = _toConsumableArray(branch.excludeGeneric.values()).find(function (regex) {
+                   return regex.test(n);
+                 });
 
-           return lastCallTime === undefined || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;
-         }
+                 if (regex) {
+                   results.push({
+                     match: 'excludeGeneric',
+                     pattern: String(regex),
+                     kv: kv
+                   });
+                   return;
+                 }
 
-         function timerExpired() {
-           var time = now();
+                 return;
+               }
 
-           if (shouldInvoke(time)) {
-             return trailingEdge(time);
-           } // Restart the timer.
+               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)
 
+               var hits = Array.from(leaf).map(function (itemID) {
+                 var area = Infinity;
 
-           timerId = setTimeout(timerExpired, remainingWait(time));
-         }
+                 if (that.itemLocation && that.locationSets) {
+                   var location = that.locationSets.get(that.itemLocation.get(itemID));
+                   area = location && location.properties.area || Infinity;
+                 }
 
-         function trailingEdge(time) {
-           timerId = undefined; // Only invoke if we have `lastArgs` which means `func` has been
-           // debounced at least once.
+                 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 (trailing && lastArgs) {
-             return invokeFunc(time);
-           }
+               if (matchLocations) {
+                 hits = hits.filter(isValidLocation);
+                 sortFn = byAreaAscending;
+               }
 
-           lastArgs = lastThis = undefined;
-           return result;
-         }
+               if (!hits.length) return; // push results
 
-         function cancel() {
-           if (timerId !== undefined) {
-             clearTimeout(timerId);
-           }
+               hits.sort(sortFn).forEach(function (hit) {
+                 if (seen.has(hit.itemID)) return;
+                 seen.add(hit.itemID);
+                 results.push(hit);
+               });
+               return true;
 
-           lastInvokeTime = 0;
-           lastArgs = lastCallTime = lastThis = timerId = undefined;
-         }
+               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.
 
-         function flush() {
-           return timerId === undefined ? result : trailingEdge(now());
-         }
 
-         function debounced() {
-           var time = now(),
-               isInvoking = shouldInvoke(time);
-           lastArgs = arguments;
-           lastThis = this;
-           lastCallTime = time;
+               function byAreaAscending(hitA, hitB) {
+                 return hitA.area - hitB.area;
+               } // Sort larger (more worldwide) locations first.
 
-           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 byAreaDescending(hitA, hitB) {
+                 return hitB.area - hitA.area;
+               }
              }
-           }
+           } //
+           // `getWarnings()`
+           // Return any warnings discovered when buiding the index.
+           // (currently this does nothing)
+           //
 
-           if (timerId === undefined) {
-             timerId = setTimeout(timerExpired, wait);
+         }, {
+           key: "getWarnings",
+           value: function getWarnings() {
+             return this.warnings;
            }
+         }]);
 
-           return result;
-         }
-
-         debounced.cancel = cancel;
-         debounced.flush = flush;
-         return debounced;
-       }
+         return Matcher;
+       }();
 
        /*
            iD.coreDifference represents the difference between two graphs.
                shaded.close();
              }
            });
-           modal.append('button').attr('class', 'close').on('click', shaded.close).call(svgIcon('#iD-icon-close'));
+           modal.append('button').attr('class', 'close').attr('title', _t('icons.close')).on('click', shaded.close).call(svgIcon('#iD-icon-close'));
            keybinding.on('⌫', shaded.close).on('⎋', shaded.close);
            select(document).call(keybinding);
          }
        }
 
        function coreHistory(context) {
-         var dispatch = dispatch$8('reset', 'change', 'merge', 'restore', 'undone', 'redone');
+         var dispatch = dispatch$8('reset', 'change', 'merge', 'restore', 'undone', 'redone', 'storage_error');
 
          var _lock = utilSessionMutex('lock'); // restorable if iD not open in another window/tab and a saved history exists in localStorage
 
            save: function save() {
              if (_lock.locked() && // don't overwrite existing, unresolved changes
              !_hasUnresolvedRestorableChanges) {
-               corePreferences(getKey('saved_history'), history.toJSON() || null);
+               var success = corePreferences(getKey('saved_history'), history.toJSON() || null);
+               if (!success) dispatch.call('storage_error');
              }
 
              return history;
            }
 
            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'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.almost_junction.highway-highway.reference'));
            }
 
            function isExtendableCandidate(node, way) {
            } // 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);
+           var uniqueID = crossing.crossPoint[0].toFixed(4) + ',' + crossing.crossPoint[1].toFixed(4);
            return new validationIssue({
              type: type,
              subtype: subtype,
            });
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.crossing_ways.' + crossingTypeID + '.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.crossing_ways.' + crossingTypeID + '.reference'));
            }
          }
 
        }
 
        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.
 
                return graph.replace(graph.entity(wayID).addNode(node.id, _nodeIndex));
              }, _annotation);
            });
-         }; // Finish the draw operation, removing the temporary edit.
+         };
+         /**
+          * @param {(typeof osmWay)[]} ways
+          * @returns {"line" | "area" | "generic"}
+          */
+
+
+         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 */
+
+
+         function followMode() {
+           if (_didResolveTempEdit) return;
+
+           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 _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
+
+
+             var historyGraph = context.history().graph();
+
+             if (!lastNodeId || !secondLastNodeId || !historyGraph.hasEntity(lastNodeId) || !historyGraph.hasEntity(secondLastNodeId)) {
+               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t.html('operations.follow.error.needs_more_initial_nodes'))();
+               return;
+             } // If the way has looped over itself, follow some other way.
+
+
+             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.html("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.
+
+
+             if (!secondLastNodesParents.some(function (n) {
+               return n.id === lastNodesParents[0].id;
+             })) {
+               context.ui().flash.duration(4000).iconName('#iD-icon-no').label(_t.html("operations.follow.error.intersection_of_different_ways.".concat(featureType)))();
+               return;
+             }
+
+             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
+
+             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
+
+             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.html('operations.follow.error.unknown'))();
+           }
+         }
+
+         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.
 
-
          drawWay.finish = function () {
            checkGeometry(false
            /* includeDrawNode */
            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'))();
+           context.ui().flash.iconName('#iD-icon-no').label(_t.html('self_intersection.error.lines'))();
          });
          mode.wayID = wayID;
          mode.isContinuing = continuing;
            }
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.disconnected_way.routable.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.disconnected_way.routable.reference'));
            }
 
            function routingIslandForEntity(entity) {
 
              return !email || valid_email.test(email);
            }
-           /*
+
+           function showReferenceEmail(selection) {
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.invalid_format.email.reference'));
+           }
+           /* see https://github.com/openstreetmap/iD/issues/6831#issuecomment-537121379
            function isSchemePresent(url) {
                var valid_scheme = /^https?:\/\//i;
                return (!url || valid_scheme.test(url));
            }
-           */
-
-
-           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'));
+                   .call(t.append('issues.invalid_format.website.reference'));
            }
             if (entity.tags.website) {
                // Multiple websites are possible
                        data: (websites.length > 1) ? '_multi' : ''
                    }));
                }
-           }
-           */
+           }*/
 
 
            if (entity.tags.email) {
            })];
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.fixme_tag.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.fixme_tag.reference'));
            }
          };
 
 
              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'));
+                 selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.impossible_oneway.' + referenceID + '.reference'));
                };
              }
            }
 
        function validationIncompatibleSource() {
          var type = 'incompatible_source';
-         var invalidSources = [{
+         var incompatibleRules = [{
+           id: 'amap',
+           regex: /(^amap$|^amap\.com|autonavi|mapabc|高德)/i
+         }, {
+           id: 'baidu',
+           regex: /(baidu|mapbar|百度)/i
+         }, {
            id: 'google',
-           regex: 'google',
-           exceptRegex: 'books.google|Google Books|drive.google|googledrive|Google Drive'
+           regex: /google/i,
+           exceptRegex: /((books|drive)\.google|google\s?(books|drive|plus))|(esri\/Google_Africa_Buildings)/i
          }];
 
          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;
+           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 (!hasInvalidSource) return;
-             issues.push(new validationIssue({
+             if (!matchRule) return null;
+             return 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', {
+                 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(invalidSource.id),
-               entityIds: [entity.id],
+               reference: getReference(matchRule.id),
+               entityIds: [entityID],
+               hash: source,
                dynamicFixes: function dynamicFixes() {
                  return [new validationIssueFix({
                    title: _t.html('issues.fix.remove_proprietary_data.title')
                  })];
                }
-             }));
-           });
-           return issues;
+             });
+           }).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.' + id + '.reference'));
+               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append("issues.incompatible_source.reference.".concat(id)));
              };
            }
          };
            });
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.tag_suggests_area.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.tag_suggests_area.reference'));
            }
          }
 
                  }) : '';
                },
                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'));
+                 selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.vertex_as_point.reference'));
                },
                entityIds: [entity.id]
              });
                  }) : '';
                },
                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'));
+                 selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.point_as_vertex.reference'));
                },
                entityIds: [entity.id],
                dynamicFixes: extractPointDynamicFixes
            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 asSource = _mainPresetIndex.matchTags(entity.tags, sourceGeom);
              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;
                }) : '';
              },
              reference: function showReference(selection) {
-               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.mismatched_geometry.reference'));
+               selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.mismatched_geometry.reference'));
              },
              entityIds: [entity.id],
              dynamicFixes: dynamicFixes
            return issues;
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.unclosed_multipolygon_part.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.unclosed_multipolygon_part.reference'));
            }
          }
 
            });
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.missing_role.multipolygon.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.missing_role.multipolygon.reference'));
            }
          }
 
            })];
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.' + referenceID + '.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.' + referenceID + '.reference'));
            }
          };
 
 
            var nsi = services.nsi;
            var waitingForNsi = false;
+           var nsiResult;
 
            if (nsi) {
              waitingForNsi = nsi.status() === 'loading';
 
              if (!waitingForNsi) {
                var loc = entity.extent(graph).center();
-               var result = nsi.upgradeTags(newTags, loc);
+               nsiResult = nsi.upgradeTags(newTags, loc);
 
-               if (result) {
-                 newTags = result;
+               if (nsiResult) {
+                 newTags = nsiResult.newTags;
                  subtype = 'noncanonical_brand';
                }
              }
            });
            var prefix = '';
 
-           if (subtype === 'noncanonical_brand') {
+           if (nsiResult) {
              prefix = 'noncanonical_brand.';
            } else if (subtype === 'deprecated_tags' && isOnlyAddingTags) {
              subtype = 'incomplete_tags';
              entityIds: [entity.id],
              hash: utilHashcode(JSON.stringify(tagDiff)),
              dynamicFixes: function dynamicFixes() {
-               return [new validationIssueFix({
+               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;
+
+               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'));
+                   }
+                 }));
+               }
+
+               return fixes;
              }
            }));
            return issues;
              return actionChangeTags(currEntity.id, newTags)(graph);
            }
 
+           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
+
+             var wd = item.mainTag; // e.g. `brand:wikidata`
+
+             var notwd = "not:".concat(wd); // e.g. `not:brand:wikidata`
+
+             var qid = item.tags[wd];
+             newTags[notwd] = qid;
+
+             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`
+
+               delete newTags[wp]; // remove `brand:wikipedia`
+             }
+
+             return actionChangeTags(currEntity.id, newTags)(graph);
+           }
+
            function showMessage(context) {
              var currEntity = context.hasEntity(entity.id);
              if (!currEntity) return '';
 
            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('div').attr('class', 'issue-reference').call(_t.append("issues.outdated_tags.".concat(prefix, "reference")));
+             enter.append('strong').call(_t.append('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);
            }
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.old_multipolygon.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.old_multipolygon.reference'));
            }
          }
 
 
            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('div').attr('class', 'issue-reference').call(_t.append('issues.private_data.reference'));
+             enter.append('strong').call(_t.append('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;
            });
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.generic_name.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.generic_name.reference'));
            }
          }
 
            });
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.generic_name.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.generic_name.reference'));
            }
          }
 
            })];
 
            function showReference(selection) {
-             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').html(_t.html('issues.unsquare_way.buildings.reference'));
+             selection.selectAll('.issue-reference').data([0]).enter().append('div').attr('class', 'issue-reference').call(_t.append('issues.unsquare_way.buildings.reference'));
            }
          };
 
            }, options);
            var view = context.map().extent();
            var seen = new Set();
-           var results = []; // collect head issues - caused by user edits
+           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 (!filter(issue)) return;
                seen.add(issue.id);
                results.push(issue);
              });
-           } // collect base issues - not caused by user edits
+           } // collect base issues - present before user edits
 
 
            if (opts.what === 'all') {
 
            _completeDiff = context.history().difference().complete();
            var incrementalDiff = coreDifference(prevGraph, currGraph);
-           var entityIDs = Object.keys(incrementalDiff.complete()); // if (!entityIDs.size) {
+           var entityIDs = Object.keys(incrementalDiff.complete());
+           entityIDs = _headCache.withAllRelatedEntities(entityIDs); // expand set
 
-           if (!entityIDs.length) {
+           if (!entityIDs.size) {
              dispatch.call('validated');
              return Promise.resolve();
            }
            if (!_baseCache.graph) _baseCache.graph = baseGraph;
            var entityIDs = entities.map(function (entity) {
              return entity.id;
-           }); // entityIDs = entityIDsToValidate(entityIDs, baseGraph);  // expand set
+           });
+           entityIDs = _baseCache.withAllRelatedEntities(entityIDs); // expand set
 
            validateEntitiesAsync(entityIDs, _baseCache);
          }); // `validateEntity()`   (private)
          // - the user did something to one of the entities involved in the issue
          //
          // Arguments
-         //   `entityIDs` - Array containing entity IDs.
+         //   `entityIDs` - Array or Set containing entity IDs.
          //
 
 
          // Schedule validation for many entities.
          //
          // Arguments
-         //   `entityIDs` - Array containing entity IDs.
+         //   `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)
          //
 
          function validateEntitiesAsync(entityIDs, cache) {
            // Enqueue the work
-           var jobs = entityIDs.map(function (entityID) {
+           var jobs = Array.from(entityIDs).map(function (entityID) {
              if (cache.queuedEntityIDs.has(entityID)) return null; // queued already
 
-             cache.queuedEntityIDs.add(entityID);
+             cache.queuedEntityIDs.add(entityID); // Clear caches for existing issues related to this entity
+
+             cache.uncacheEntityID(entityID);
              return function () {
-               // Clear caches for existing issues related to this entity
-               cache.uncacheEntityID(entityID);
                cache.queuedEntityIDs["delete"](entityID);
                var graph = cache.graph;
                if (!graph) return; // was reset?
 
                var entity = graph.hasEntity(entityID); // Sanity check: don't validate deleted entities
 
-               if (!entity) return; // In the head cache, only validate 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.
-
-               if (cache.which === 'head' && !_completeDiff.hasOwnProperty(entityID)) return; // detect new issues and update caches
+               if (!entity) return; // detect new issues and update caches
 
                var result = validateEntity(entity, graph);
 
 
          };
 
-         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();
-               }
+         cache.cacheIssue = function (issue) {
+           (issue.entityIds || []).forEach(function (entityID) {
+             if (!cache.issuesByEntityID[entityID]) {
+               cache.issuesByEntityID[entityID] = new Set();
+             }
 
-               cache.issuesByEntityID[entityID].add(issue.id);
-             });
-             cache.issuesByIssueID[issue.id] = issue;
+             cache.issuesByEntityID[entityID].add(issue.id);
            });
+           cache.issuesByIssueID[issue.id] = issue;
          };
 
          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) {
+           (issue.entityIds || []).forEach(function (entityID) {
              if (cache.issuesByEntityID[entityID]) {
                cache.issuesByEntityID[entityID]["delete"](issue.id);
              }
            delete cache.issuesByIssueID[issue.id];
          };
 
+         cache.cacheIssues = function (issues) {
+           issues.forEach(cache.cacheIssue);
+         };
+
          cache.uncacheIssues = function (issues) {
            issues.forEach(cache.uncacheIssue);
          };
 
 
          cache.uncacheEntityID = function (entityID) {
-           var issueIDs = cache.issuesByEntityID[entityID];
+           var entityIssueIDs = cache.issuesByEntityID[entityID];
 
-           if (issueIDs) {
-             issueIDs.forEach(function (issueID) {
+           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];
                }
              });
 
            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.
+         //
+
+
+         cache.withAllRelatedEntities = function (entityIDs) {
+           var result = new Set();
+           (entityIDs || []).forEach(function (entityID) {
+             result.add(entityID); // include self
+
+             var entityIssueIDs = cache.issuesByEntityID[entityID];
+
+             if (entityIssueIDs) {
+               entityIssueIDs.forEach(function (issueID) {
+                 var issue = cache.issuesByIssueID[issueID];
+
+                 if (issue) {
+                   (issue.entityIds || []).forEach(function (relatedID) {
+                     return result.add(relatedID);
+                   });
+                 } else {
+                   // shouldn't happen, clean up
+                   delete cache.issuesByIssueID[issueID];
+                 }
+               });
+             }
+           });
+           return result;
          };
 
          return cache;
              }
 
              function formatUser(d) {
-               return '<a href="' + osm.userURL(d) + '" target="_blank">' + d + '</a>';
+               return '<a href="' + osm.userURL(d) + '" target="_blank">' + escape$4(d) + '</a>';
              }
 
              function entityName(entity) {
          return uploader;
        }
 
+       var $$2 = _export;
+       var fails = fails$V;
+       var expm1 = mathExpm1;
+
        var abs = Math.abs;
        var exp = Math.exp;
        var E = Math.E;
        // `Math.sinh` method
        // https://tc39.es/ecma262/#sec-math.sinh
        // V8 near Chromium 38 has a problem with very small numbers
-       _export({ target: 'Math', stat: true, forced: FORCED }, {
+       $$2({ target: 'Math', stat: true, forced: FORCED }, {
          sinh: function sinh(x) {
-           return abs(x = +x) < 1 ? (mathExpm1(x) - mathExpm1(-x)) / 2 : (exp(x - 1) - exp(-x - 1)) * (E / 2);
+           return abs(x = +x) < 1 ? (expm1(x) - expm1(-x)) / 2 : (exp(x - 1) - exp(-x - 1)) * (E / 2);
          }
        });
 
          source.name = function () {
            var id_safe = source.id.replace(/\./g, '<TX_DOT>');
            return _t('imagery.' + id_safe + '.name', {
-             "default": _name
+             "default": lodash.exports.escape(_name)
            });
          };
 
          source.label = function () {
            var id_safe = source.id.replace(/\./g, '<TX_DOT>');
            return _t.html('imagery.' + id_safe + '.name', {
-             "default": _name
+             "default": lodash.exports.escape(_name)
            });
          };
 
          source.description = function () {
            var id_safe = source.id.replace(/\./g, '<TX_DOT>');
            return _t.html('imagery.' + id_safe + '.description', {
-             "default": _description
+             "default": lodash.exports.escape(_description)
            });
          };
 
            // Guess a type based on the tokens present in the template
            // (This is for 'custom' source, where we don't know)
 
-           if (!source.type) {
+           if (!source.type || source.id === 'custom') {
              if (/SERVICE=WMS|\{(proj|wkid|bbox)\}/.test(_template)) {
                source.type = 'wms';
                source.projection = 'EPSG:3857'; // guess
          };
 
          esri.getMetadata = function (center, tileCoord, callback) {
+           if (esri.id !== 'EsriWorldImagery') {
+             // rest endpoint is not available for ESRI's "clarity" imagery
+             return callback(null, {});
+           }
+
            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 unknown = _t('info_panels.background.unknown');
-           var metadataLayer;
            var vintage = {};
            var metadata = {};
-           if (inflight[tileID]) return;
-
-           switch (true) {
-             case zoom >= 20 && esri.id === 'EsriWorldImageryClarity':
-               metadataLayer = 4;
-               break;
-
-             case zoom >= 19:
-               metadataLayer = 3;
-               break;
-
-             case zoom >= 17:
-               metadataLayer = 2;
-               break;
-
-             case zoom >= 13:
-               metadataLayer = 0;
-               break;
-
-             default:
-               metadataLayer = 99;
-           }
-
-           var url; // build up query using the layer appropriate to the current zoom
-
-           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/';
-           }
+           if (inflight[tileID]) return; // build up query using the layer appropriate to the current zoom
 
-           url += metadataLayer + '/query?returnGeometry=false&geometry=' + centerPoint + '&inSR=4326&geometryType=esriGeometryPoint&outFields=*&f=json';
+           var url = 'https://services.arcgisonline.com/arcgis/rest/services/World_Imagery/MapServer/4/query';
+           url += '?returnGeometry=false&geometry=' + centerPoint + '&inSR=4326&geometryType=esriGeometryPoint&outFields=*&f=json';
 
            if (!cache[tileID]) {
              cache[tileID] = {};
 
            if (cache[tileID] && cache[tileID].metadata) {
              return callback(null, cache[tileID].metadata);
-           } // accurate metadata is only available >= 13
+           }
+
+           inflight[tileID] = true;
+           d3_json(url).then(function (result) {
+             delete inflight[tileID];
+             result = result.features.map(function (f) {
+               return f.attributes;
+             }).filter(function (a) {
+               return a.MinMapLevel <= zoom && a.MaxMapLevel >= zoom;
+             })[0];
+
+             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 (metadataLayer === 99) {
+             var captureDate = localeDateString(result.SRC_DATE2);
              vintage = {
-               start: null,
-               end: null,
-               range: null
+               start: captureDate,
+               end: captureDate,
+               range: captureDate
              };
              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];
+               vintage: vintage,
+               source: clean(result.NICE_NAME),
+               description: clean(result.NICE_DESC),
+               resolution: clean(+parseFloat(result.SRC_RES).toFixed(4)),
+               accuracy: clean(+parseFloat(result.SRC_ACC).toFixed(4))
+             }; // append units - meters
 
-               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
-
-
-               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.resolution)) {
+               metadata.resolution += ' m';
+             }
 
-               if (isFinite(metadata.accuracy)) {
-                 metadata.accuracy += ' m';
-               }
+             if (isFinite(metadata.accuracy)) {
+               metadata.accuracy += ' m';
+             }
 
-               cache[tileID].metadata = metadata;
-               if (callback) callback(null, metadata);
-             })["catch"](function (err) {
-               delete inflight[tileID];
-               if (callback) callback(err.message);
-             });
-           }
+             cache[tileID].metadata = metadata;
+             if (callback) callback(null, metadata);
+           })["catch"](function (err) {
+             delete inflight[tileID];
+             if (callback) callback(err.message);
+           });
 
            function clean(val) {
              return String(val).trim() || unknown;
                }
              }, 300);
            });
-           image.enter().append('img').attr('class', 'tile').attr('draggable', 'false').style('width', _tileSize + 'px').style('height', _tileSize + 'px').attr('src', function (d) {
+           image.enter().append('img').attr('class', 'tile').attr('alt', '').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;
              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) {
+             debug.selectAll('.tile-label-debug-coord').text(function (d) {
                return d[2] + ' / ' + d[0] + ' / ' + d[1];
              });
              debug.selectAll('.tile-label-debug-vintage').each(function (d) {
                var center = context.projection.invert(tileCenter(d));
 
                _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 (result && result.vintage && result.vintage.range) {
+                   span.text(result.vintage.range);
+                 } else {
+                   span.html(_t.html('info_panels.background.vintage') + ': ' + _t.html('info_panels.background.unknown'));
+                 }
                });
              });
            }
          var dispatch = dispatch$8('change');
          var detected = utilDetect();
          var baseLayer = rendererTileLayer(context).projection(context.projection);
+         var _checkedBlocklists = [];
          var _isValid = true;
          var _overlayLayers = [];
          var _brightness = 1;
              mapillary: 'Mapillary Images',
              'mapillary-map-features': 'Mapillary Map Features',
              'mapillary-signs': 'Mapillary Signs',
-             openstreetcam: 'OpenStreetCam Images'
+             kartaview: 'KartaView Images'
            };
 
            for (var layerID in photoOverlayLayers) {
            context.history().photoOverlaysUsed(photoOverlaysUsed);
          };
 
-         var _checkedBlocklists;
-
          background.sources = function (extent, zoom, includeCurrent) {
            if (!_imageryIndex) return []; // called before init()?
 
            (_imageryIndex.query.bbox(extent.rectangle(), true) || []).forEach(function (d) {
              return visible[d.id] = true;
            });
-           var currSource = baseLayer.source();
+           var currSource = baseLayer.source(); // Recheck blocked sources only if we detect new blocklists pulled from the OSM API.
+
            var osm = context.connection();
-           var blocklists = osm && osm.imageryBlocklists();
+           var blocklists = osm && osm.imageryBlocklists() || [];
+           var blocklistChanged = blocklists.length !== _checkedBlocklists.length || blocklists.some(function (regex, index) {
+             return String(regex) !== _checkedBlocklists[index];
+           });
 
-           if (blocklists && blocklists !== _checkedBlocklists) {
+           if (blocklistChanged) {
              _imageryIndex.backgrounds.forEach(function (source) {
-               source.isBlocked = blocklists.some(function (blocklist) {
-                 return blocklist.test(source.template());
+               source.isBlocked = blocklists.some(function (regex) {
+                 return regex.test(source.template());
                });
              });
 
-             _checkedBlocklists = blocklists;
+             _checkedBlocklists = blocklists.map(function (regex) {
+               return String(regex);
+             });
            }
 
            return _imageryIndex.backgrounds.filter(function (source) {
          return features;
        }
 
-       /** Error message constants. */
-
-       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);
-        */
-
-       function throttle(func, wait, options) {
-         var leading = true,
-             trailing = true;
-
-         if (typeof func != 'function') {
-           throw new TypeError(FUNC_ERROR_TEXT);
-         }
-
-         if (isObject$2(options)) {
-           leading = 'leading' in options ? !!options.leading : leading;
-           trailing = 'trailing' in options ? !!options.trailing : trailing;
-         }
-
-         return debounce(func, wait, {
-           'leading': leading,
-           'maxWait': wait,
-           'trailing': trailing
-         });
-       }
-
        //
        // - the activeID - nope
        // - 1 away (adjacent) to the activeID - yes (vertices will be merged)
 
                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
+               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
              }
            }
          }
          '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 secondaries = ['oneway', 'bridge', 'tunnel', 'embankment', 'cutting', 'barrier', 'surface', 'tracktype', 'footway', 'crossing', 'service', 'sport', 'public_transport', 'location', 'parking', 'golf', 'type', 'leisure', 'man_made', 'indoor', 'construction', 'proposed'];
 
          var _tags = function _tags(entity) {
            return entity.tags;
          }(data);
        };
 
+       var $$1 = _export;
        var $entries = objectToArray.entries;
 
        // `Object.entries` method
        // https://tc39.es/ecma262/#sec-object.entries
-       _export({ target: 'Object', stat: true }, {
+       $$1({ target: 'Object', stat: true }, {
          entries: function entries(O) {
            return $entries(O);
          }
            return new DOMParser().parseFromString(textdata, 'text/xml');
          }
 
+         function stringifyGeojsonProperties(feature) {
+           var properties = feature.properties;
+
+           for (var key in properties) {
+             var property = properties[key];
+
+             if (typeof property === 'number' || typeof property === 'boolean' || Array.isArray(property)) {
+               properties[key] = property.toString();
+             } else if (property === null) {
+               properties[key] = 'null';
+             } else if (_typeof(property) === 'object') {
+               properties[key] = JSON.stringify(property);
+             }
+           }
+         }
+
          drawData.setFile = function (extension, data) {
            _template = null;
            _fileList = null;
              case '.geojson':
              case '.json':
                gj = JSON.parse(data);
+
+               if (gj.type === 'FeatureCollection') {
+                 gj.features.forEach(stringifyGeojsonProperties);
+               } else if (gj.type === 'Feature') {
+                 stringifyGeojsonProperties(gj);
+               }
+
                break;
            }
 
          return drawMapFeatures;
        }
 
-       function svgOpenstreetcamImages(projection, context, dispatch) {
+       function svgKartaviewImages(projection, context, dispatch) {
          var throttledRedraw = throttle(function () {
            dispatch.call('change');
          }, 1000);
          var minViewfieldZoom = 18;
          var layer = select(null);
 
-         var _openstreetcam;
+         var _kartaview;
 
          function init() {
-           if (svgOpenstreetcamImages.initialized) return; // run once
+           if (svgKartaviewImages.initialized) return; // run once
 
-           svgOpenstreetcamImages.enabled = false;
-           svgOpenstreetcamImages.initialized = true;
+           svgKartaviewImages.enabled = false;
+           svgKartaviewImages.initialized = true;
          }
 
          function getService() {
-           if (services.openstreetcam && !_openstreetcam) {
-             _openstreetcam = services.openstreetcam;
+           if (services.kartaview && !_kartaview) {
+             _kartaview = services.kartaview;
 
-             _openstreetcam.event.on('loadedImages', throttledRedraw);
-           } else if (!services.openstreetcam && _openstreetcam) {
-             _openstreetcam = null;
+             _kartaview.event.on('loadedImages', throttledRedraw);
+           } else if (!services.kartaview && _kartaview) {
+             _kartaview = null;
            }
 
-           return _openstreetcam;
+           return _kartaview;
          }
 
          function showLayer() {
          }
 
          function drawImages(selection) {
-           var enabled = svgOpenstreetcamImages.enabled,
+           var enabled = svgKartaviewImages.enabled,
                service = getService();
-           layer = selection.selectAll('.layer-openstreetcam').data(service ? [0] : []);
+           layer = selection.selectAll('.layer-kartaview').data(service ? [0] : []);
            layer.exit().remove();
-           var layerEnter = layer.enter().append('g').attr('class', 'layer-openstreetcam').style('display', enabled ? 'block' : 'none');
+           var layerEnter = layer.enter().append('g').attr('class', 'layer-kartaview').style('display', enabled ? 'block' : 'none');
            layerEnter.append('g').attr('class', 'sequences');
            layerEnter.append('g').attr('class', 'markers');
            layer = layerEnter.merge(layer);
          }
 
          drawImages.enabled = function (_) {
-           if (!arguments.length) return svgOpenstreetcamImages.enabled;
-           svgOpenstreetcamImages.enabled = _;
+           if (!arguments.length) return svgKartaviewImages.enabled;
+           svgKartaviewImages.enabled = _;
 
-           if (svgOpenstreetcamImages.enabled) {
+           if (svgKartaviewImages.enabled) {
              showLayer();
-             context.photos().on('change.openstreetcam_images', update);
+             context.photos().on('change.kartaview_images', update);
            } else {
              hideLayer();
-             context.photos().on('change.openstreetcam_images', null);
+             context.photos().on('change.kartaview_images', null);
            }
 
            dispatch.call('change');
            id: 'mapillary-signs',
            layer: svgMapillarySigns(projection, context, dispatch)
          }, {
-           id: 'openstreetcam',
-           layer: svgOpenstreetcamImages(projection, context, dispatch)
+           id: 'kartaview',
+           layer: svgKartaviewImages(projection, context, dispatch)
          }, {
            id: 'debug',
            layer: svgDebug(projection, context)
              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
-
-                 if (detected.os !== 'mac') {
-                   dY *= 5;
-                 } // 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 pinch zooming (Safari) - #5492
-                 // These are fake `wheel` events we made from Safari `gesturechange` events..
-               } else if (source._scale) {
+               // 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
+
+               if (detected.os !== 'mac') {
+                 dY *= 5;
+               } // 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 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);
 
        function rendererPhotos(context) {
          var dispatch = dispatch$8('change');
-         var _layerIDs = ['streetside', 'mapillary', 'mapillary-map-features', 'mapillary-signs', 'openstreetcam'];
+         var _layerIDs = ['streetside', 'mapillary', 'mapillary-map-features', 'mapillary-signs', 'kartaview'];
          var _allPhotoTypes = ['flat', 'panoramic'];
 
          var _shownPhotoTypes = _allPhotoTypes.slice(); // shallow copy
          }
 
          photos.shouldFilterByDate = function () {
-           return showsLayer('mapillary') || showsLayer('openstreetcam') || showsLayer('streetside');
+           return showsLayer('mapillary') || showsLayer('kartaview') || showsLayer('streetside');
          };
 
          photos.shouldFilterByPhotoType = function () {
-           return showsLayer('mapillary') || showsLayer('streetside') && showsLayer('openstreetcam');
+           return showsLayer('mapillary') || showsLayer('streetside') && showsLayer('kartaview');
          };
 
          photos.shouldFilterByUsername = function () {
-           return !showsLayer('mapillary') && showsLayer('openstreetcam') && !showsLayer('streetside');
+           return !showsLayer('mapillary') && showsLayer('kartaview') && !showsLayer('streetside');
          };
 
          photos.showsPhotoType = function (val) {
            }
 
            if (hash.photo_overlay) {
-             // support enabling photo layers by default via a URL parameter, e.g. `photo_overlay=openstreetcam;mapillary;streetside`
+             // support enabling photo layers by default via a URL parameter, e.g. `photo_overlay=kartaview;mapillary;streetside`
              var hashOverlayIDs = hash.photo_overlay.replace(/;/g, ',').split(',');
              hashOverlayIDs.forEach(function (id) {
+               if (id === 'openstreetcam') id = 'kartaview'; // legacy alias
+
                var layer = _layerIDs.indexOf(id) !== -1 && context.layers().layer(id);
                if (layer && !layer.enabled()) layer.enabled(true);
              });
 
              if (results && results.length >= 3) {
                var serviceId = results[1];
+               if (serviceId === 'openstreetcam') serviceId = 'kartaview'; // legacy alias
+
                var photoKey = results[2];
                var service = services[serviceId];
 
 
 
              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) {
+             logoutLink.append('a').attr('class', 'logout').attr('href', '#').call(_t.append('logout')).on('click.logout', function (d3_event) {
                d3_event.preventDefault();
                osm.logout();
              });
                attribution.append('img').attr('class', 'source-image').attr('src', d.icon);
              }
 
-             attribution.append('span').attr('class', 'attribution-text').html(terms_text);
+             attribution.append('span').attr('class', 'attribution-text').text(terms_text);
            }).merge(attributions);
            var copyright = attributions.selectAll('.copyright-notice').data(function (d) {
              var notice = d.copyrightNotices(context.map().zoom(), context.map().extent());
            });
            copyright.exit().remove();
            copyright = copyright.enter().append('span').attr('class', 'copyright-notice').merge(copyright);
-           copyright.html(String);
+           copyright.text(String);
          }
 
          function update() {
            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);
+           }).attr('target', '_blank').text(String);
 
            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);
+             }).text(othersNum);
              wrap.append('span').html(_t.html('contributors.truncated_list', {
                n: othersNum,
-               users: userList.html(),
-               count: count.html()
+               users: {
+                 html: userList.html()
+               },
+               count: {
+                 html: count.html()
+               }
              }));
            } else {
              wrap.append('span').html(_t.html('contributors.list', {
-               users: userList.html()
+               users: {
+                 html: userList.html()
+               }
              }));
            }
 
              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'));
+             keyhintWrapEnter.append('span').call(_t.append('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;
 
              _tooltips.push(tooltip);
 
-             select(this).call(tooltip).append('div').attr('class', 'icon-wrap').call(svgIcon('#iD-operation-' + d.id, 'operation'));
+             select(this).call(tooltip).append('div').attr('class', 'icon-wrap').call(svgIcon(d.icon && d.icon() || '#iD-operation-' + d.id, 'operation'));
            });
 
            if (showLabels) {
            var hiddenList = features.hidden().map(function (k) {
              if (stats[k]) {
                count += stats[k];
-               return _t('inspector.title_count', {
-                 title: _t.html('feature.' + k + '.description'),
+               return _t.html('inspector.title_count', {
+                 title: {
+                   html: _t.html('feature.' + k + '.description')
+                 },
                  count: stats[k]
                });
              }
              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', {
+             selection.append('a').attr('class', 'chip').attr('href', '#').call(_t.append('feature_info.hidden_warning', {
                count: count
              })).call(tooltipBehavior).on('click', function (d3_event) {
                tooltipBehavior.hide();
 
          function updateButtonState() {
            _button.classed('active', _layer.enabled());
+
+           _button.attr('aria-pressed', _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')]));
+           _button = selection.append('button').on('click', click).attr('aria-pressed', false).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);
          };
        }
            _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]);
+             list.append('li').attr('class', 'background-info-list-' + k).classed('hide', !_metadata[k]).call(_t.append('info_panels.background.' + k, {
+               suffix: ':'
+             })).append('span').attr('class', 'background-info-span-' + k).text(_metadata[k]);
            });
 
            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) {
+           selection.append('a').call(_t.append('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);
              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) {
+             selection.append('a').call(_t.append('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);
            var center = context.map().center(); // update zoom
 
            _metadata.zoom = String(zoom);
-           selection.selectAll('.background-info-list-zoom').classed('hide', false).selectAll('.background-info-span-zoom').html(_metadata.zoom);
+           selection.selectAll('.background-info-list-zoom').classed('hide', false).selectAll('.background-info-span-zoom').text(_metadata.zoom);
            if (!d || !d.length >= 3) return;
            background.baseLayerSource().getMetadata(center, d, function (err, result) {
              if (err || _currSourceName !== sourceName) return; // update vintage
 
              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
+             selection.selectAll('.background-info-list-vintage').classed('hide', false).selectAll('.background-info-span-vintage').text(_metadata.vintage); // update other _metadata
 
              _metadataKeys.forEach(function (k) {
                if (k === 'zoom' || k === 'vintage') return; // done already
 
                var val = result[k];
                _metadata[k] = val;
-               selection.selectAll('.background-info-list-' + k).classed('hide', !val).selectAll('.background-info-span-' + k).html(val);
+               selection.selectAll('.background-info-list-' + k).classed('hide', !val).selectAll('.background-info-span-' + k).text(val);
              });
            });
          }
 
          function displayUser(selection, userName) {
            if (!userName) {
-             selection.append('span').html(_t.html('info_panels.history.unknown'));
+             selection.append('span').call(_t.append('info_panels.history.unknown'));
              return;
            }
 
-           selection.append('span').attr('class', 'user-name').html(userName);
+           selection.append('span').attr('class', 'user-name').text(userName);
            var links = selection.append('div').attr('class', 'links');
 
            if (osm) {
-             links.append('a').attr('class', 'user-osm-link').attr('href', osm.userURL(userName)).attr('target', '_blank').html('OSM');
+             links.append('a').attr('class', 'user-osm-link').attr('href', osm.userURL(userName)).attr('target', '_blank').call(_t.append('info_panels.history.profile_link'));
            }
 
-           links.append('a').attr('class', 'user-hdyc-link').attr('href', 'https://hdyc.neis-one.org/?' + userName).attr('target', '_blank').attr('tabindex', -1).html('HDYC');
+           links.append('a').attr('class', 'user-hdyc-link').attr('href', 'https://hdyc.neis-one.org/?' + userName).attr('target', '_blank').attr('tabindex', -1).text('HDYC');
          }
 
          function displayChangeset(selection, changeset) {
            if (!changeset) {
-             selection.append('span').html(_t.html('info_panels.history.unknown'));
+             selection.append('span').call(_t.append('info_panels.history.unknown'));
              return;
            }
 
-           selection.append('span').attr('class', 'changeset-id').html(changeset);
+           selection.append('span').attr('class', 'changeset-id').text(changeset);
            var links = selection.append('div').attr('class', 'links');
 
            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-osm-link').attr('href', osm.changesetURL(changeset)).attr('target', '_blank').call(_t.append('info_panels.history.changeset_link'));
            }
 
-           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');
+           links.append('a').attr('class', 'changeset-osmcha-link').attr('href', 'https://osmcha.org/changesets/' + changeset).attr('target', '_blank').text('OSMCha');
+           links.append('a').attr('class', 'changeset-achavi-link').attr('href', 'https://overpass-api.de/achavi/?changeset=' + changeset).attr('target', '_blank').text('Achavi');
          }
 
          function redraw(selection) {
 
            if (selectedNoteID && osm) {
              // selected 1 note
-             selected = [_t('note.note') + ' ' + selectedNoteID];
+             selected = [_t.html('note.note') + ' ' + selectedNoteID];
              note = osm.getNote(selectedNoteID);
            } else {
              // selected 1..n entities
 
            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) {
+             selection.append('h4').attr('class', 'history-heading').html(singular);
+           } else {
+             selection.append('h4').attr('class', 'history-heading').call(_t.append('info_panels.selected', {
+               n: selected.length
+             }));
+           }
+
            if (!singular) return;
 
            if (entity) {
 
          function redrawNote(selection, note) {
            if (!note || note.isNew()) {
-             selection.append('div').html(_t.html('info_panels.history.note_no_history'));
+             selection.append('div').call(_t.append('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);
+           list.append('li').call(_t.append('info_panels.history.note_comments', {
+             suffix: ':'
+           })).append('span').text(note.comments.length);
 
            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);
+             list.append('li').call(_t.append('info_panels.history.note_created_date', {
+               suffix: ':'
+             })).append('span').text(displayTimestamp(note.comments[0].date));
+             list.append('li').call(_t.append('info_panels.history.note_created_user', {
+               suffix: ':'
+             })).call(displayUser, note.comments[0].user);
            }
 
            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'));
+             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').call(_t.append('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'));
+             selection.append('div').call(_t.append('info_panels.history.no_history'));
              return;
            }
 
            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');
+             links.append('a').attr('class', 'view-history-on-osm').attr('href', osm.historyURL(entity)).attr('target', '_blank').call(_t.append('info_panels.history.history_link'));
            }
 
-           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');
+           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).text('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);
+           list.append('li').call(_t.append('info_panels.history.version', {
+             suffix: ':'
+           })).append('span').text(entity.version);
+           list.append('li').call(_t.append('info_panels.history.last_edit', {
+             suffix: ':'
+           })).append('span').text(displayTimestamp(entity.timestamp));
+           list.append('li').call(_t.append('info_panels.history.edited_by', {
+             suffix: ':'
+           })).call(displayUser, entity.user);
+           list.append('li').call(_t.append('info_panels.history.changeset', {
+             suffix: ':'
+           })).call(displayChangeset, entity.changeset);
          }
 
          var panel = function panel(selection) {
              coord = context.map().center();
            }
 
-           list.append('li').html(dmsCoordinatePair(coord)).append('li').html(decimalCoordinatePair(coord)); // Location Info
+           list.append('li').text(dmsCoordinatePair(coord)).append('li').text(decimalCoordinatePair(coord)); // Location Info
 
-           selection.append('div').attr('class', 'location-info').html(currLocation || ' ');
+           selection.append('div').attr('class', 'location-info').text(currLocation || ' ');
            debouncedGetLocation(selection, coord);
          }
 
          function getLocation(selection, coord) {
            if (!services.geocoder) {
              currLocation = _t('info_panels.location.unknown_location');
-             selection.selectAll('.location-info').html(currLocation);
+             selection.selectAll('.location-info').text(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);
+               selection.selectAll('.location-info').text(currLocation);
              });
            }
          }
            if (selectedNoteID && osm) {
              // selected 1 note
              var note = osm.getNote(selectedNoteID);
-             heading = _t('note.note') + ' ' + selectedNoteID;
+             heading = _t.html('note.note') + ' ' + selectedNoteID;
              location = note.loc;
              geometry = 'note';
            } else {
              var selected = selectedIDs.map(function (id) {
                return context.entity(id);
              });
-             heading = selected.length === 1 ? selected[0].id : _t('info_panels.selected', {
+             heading = selected.length === 1 ? selected[0].id : _t.html('info_panels.selected', {
                n: selected.length
              });
 
            var coordItem;
 
            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));
+             list.append('li').call(_t.append('info_panels.measurement.geometry', {
+               suffix: ':'
+             })).append('span').html(closed ? _t.html('info_panels.measurement.closed_' + geometry) : _t.html('geometry.' + geometry));
            }
 
            if (totalNodeCount) {
-             list.append('li').html(_t.html('info_panels.measurement.node_count') + ':').append('span').html(totalNodeCount.toLocaleString(localeCode));
+             list.append('li').call(_t.append('info_panels.measurement.node_count', {
+               suffix: ':'
+             })).append('span').text(totalNodeCount.toLocaleString(localeCode));
            }
 
            if (area) {
-             list.append('li').html(_t.html('info_panels.measurement.area') + ':').append('span').html(displayArea(area, _isImperial));
+             list.append('li').call(_t.append('info_panels.measurement.area', {
+               suffix: ':'
+             })).append('span').text(displayArea(area, _isImperial));
            }
 
            if (length) {
-             list.append('li').html(_t.html('info_panels.measurement.' + (closed ? 'perimeter' : 'length')) + ':').append('span').html(displayLength(length, _isImperial));
+             list.append('li').call(_t.append('info_panels.measurement.' + (closed ? 'perimeter' : 'length'), {
+               suffix: ':'
+             })).append('span').text(displayLength(length, _isImperial));
            }
 
            if (typeof distance === 'number') {
-             list.append('li').html(_t.html('info_panels.measurement.distance') + ':').append('span').html(displayLength(distance, _isImperial));
+             list.append('li').call(_t.append('info_panels.measurement.distance', {
+               suffix: ':'
+             })).append('span').text(displayLength(distance, _isImperial));
            }
 
            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));
+             coordItem = list.append('li').call(_t.append('info_panels.measurement.location', {
+               suffix: ':'
+             }));
+             coordItem.append('span').text(dmsCoordinatePair(location));
+             coordItem.append('span').text(decimalCoordinatePair(location));
            }
 
            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));
+             coordItem = list.append('li').call(_t.append('info_panels.measurement.centroid', {
+               suffix: ':'
+             }));
+             coordItem.append('span').text(dmsCoordinatePair(centroid));
+             coordItem.append('span').text(decimalCoordinatePair(centroid));
            }
 
            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));
+             coordItem = list.append('li').call(_t.append('info_panels.measurement.center', {
+               suffix: ':'
+             }));
+             coordItem.append('span').text(dmsCoordinatePair(center));
+             coordItem.append('span').text(decimalCoordinatePair(center));
            }
 
            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) {
+             selection.append('a').call(_t.append('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);
              title.append('h3').html(function (d) {
                return panels[d].label;
              });
-             title.append('button').attr('class', 'close').on('click', function (d3_event, d) {
+             title.append('button').attr('class', 'close').attr('title', _t('icons.close')).on('click', function (d3_event, d) {
                d3_event.stopImmediatePropagation();
                d3_event.preventDefault();
                info.toggle(d);
              help: _t.html('help.title'),
              ok: _t.html('intro.ok')
            };
+
+           for (var key in helpStringReplacements) {
+             helpStringReplacements[key] = {
+               html: helpStringReplacements[key]
+             };
+           }
          }
 
          var reps;
            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')
+             button: {
+               html: icon(href, 'inline')
+             }
            }));
            context.on('exit.intro', function () {
              continueTo(searchStreet);
              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')
+               button: {
+                 html: icon(href, 'inline')
+               }
              }), {
                duration: 0
              });
            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()
+             button: {
+               html: icon(href, 'inline')
+             },
+             field1: {
+               html: onewayField.label()
+             },
+             field2: {
+               html: maxspeedField.label()
+             }
            }));
            context.on('exit.intro', function () {
              continueTo(play);
              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()
+               button: {
+                 html: icon(href, 'inline')
+               },
+               field1: {
+                 html: onewayField.label()
+               },
+               field2: {
+                 html: maxspeedField.label()
+               }
              }), {
                duration: 0
              });
              continueTo(reselectPoint);
            });
            reveal('.entity-editor-pane', helpHtml('intro.points.add_close', {
-             button: icon(href, 'inline')
+             button: {
+               html: icon(href, 'inline')
+             }
            }));
 
            function continueTo(nextStep) {
            });
            timeout(function () {
              reveal('.entity-editor-pane', helpHtml('intro.points.update_close', {
-               button: icon('#iD-icon-close', 'inline')
+               button: {
+                 html: icon('#iD-icon-close', 'inline')
+               }
              }));
            }, 500);
 
 
              timeout(function () {
                reveal('.more-fields .combobox-input', helpHtml('intro.areas.add_field', {
-                 name: nameField.label(),
-                 description: descriptionField.label()
+                 name: {
+                   html: nameField.label()
+                 },
+                 description: {
+                   html: descriptionField.label()
+                 }
                }), {
                  duration: 300
                });
              }
            }, 300);
            reveal('div.combobox', helpHtml('intro.areas.choose_field', {
-             field: descriptionField.label()
+             field: {
+               html: descriptionField.label()
+             }
            }), {
              duration: 300
            });
              continueTo(play);
            });
            reveal('.entity-editor-pane', helpHtml('intro.areas.describe_playground', {
-             button: icon('#iD-icon-close', 'inline')
+             button: {
+               html: icon('#iD-icon-close', 'inline')
+             }
            }), {
              duration: 300
            });
 
            context.container().select('.inspector-wrap .panewrap').style('right', '0%');
            reveal('.entity-editor-pane', helpHtml('intro.areas.retry_add_field', {
-             field: descriptionField.label()
+             field: {
+               html: descriptionField.label()
+             }
            }), {
              buttonText: _t.html('intro.ok'),
              buttonCallback: function buttonCallback() {
            });
            timeout(function () {
              reveal('.entity-editor-pane', helpHtml('intro.lines.name_road', {
-               button: icon('#iD-icon-close', 'inline')
+               button: {
+                 html: icon('#iD-icon-close', 'inline')
+               }
              }), {
                tooltipClass: 'intro-lines-name_road'
              });
            }, 400); // after preset list pane visible..
 
            context.on('enter.intro', function (mode) {
-             if (!_houseID || !context.hasEntity(_houseID)) {
-               return continueTo(addHouse);
+             if (!_houseID || !context.hasEntity(_houseID)) {
+               return continueTo(addHouse);
+             }
+
+             var ids = context.selectedIDs();
+
+             if (mode.id !== 'select' || !ids.length || ids[0] !== _houseID) {
+               return continueTo(chooseCategoryBuilding);
+             }
+           });
+
+           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();
+           }
+
+           var ids = context.selectedIDs();
+
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _houseID) {
+             context.enter(modeSelect(context, [_houseID]));
+           }
+
+           context.history().checkpoint('hasHouse');
+           context.on('exit.intro', function () {
+             continueTo(rightClickHouse);
+           });
+           timeout(function () {
+             reveal('.entity-editor-pane', helpHtml('intro.buildings.close', {
+               button: {
+                 html: icon('#iD-icon-close', 'inline')
+               }
+             }));
+           }, 500);
+
+           function continueTo(nextStep) {
+             context.on('exit.intro', null);
+             nextStep();
+           }
+         }
+
+         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;
+           }
+
+           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);
+           });
+
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             context.map().on('move.intro drawn.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }
+
+         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
+           });
+           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);
+             }
+
+             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();
+           }
+         }
+
+         function retryClickSquare() {
+           context.enter(modeBrowse(context));
+           revealHouse(house, helpHtml('intro.buildings.retry_square'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               continueTo(rightClickHouse);
+             }
+           });
+
+           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);
+             }
+           });
+
+           function continueTo(nextStep) {
+             nextStep();
+           }
+         }
+
+         function addTank() {
+           context.enter(modeBrowse(context));
+           context.history().reset('doneSquare');
+           _tankID = null;
+           var msec = transitionTime(tank, context.map().center());
+
+           if (msec) {
+             reveal(null, null, {
+               duration: 0
+             });
+           }
+
+           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 continueTo(nextStep) {
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }
+
+         function startTank() {
+           if (context.mode().id !== 'add-area') {
+             return continueTo(addTank);
+           }
+
+           _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 continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }
+
+         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
+             });
+           });
+           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);
+             }
+           });
+
+           function continueTo(nextStep) {
+             context.map().on('move.intro drawn.intro', null);
+             context.on('enter.intro', null);
+             nextStep();
+           }
+         }
+
+         function searchPresetTank() {
+           if (!_tankID || !context.hasEntity(_tankID)) {
+             return addTank();
+           }
+
+           var ids = context.selectedIDs();
+
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _tankID) {
+             context.enter(modeSelect(context, [_tankID]));
+           } // 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%');
+             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..
+
+           context.on('enter.intro', function (mode) {
+             if (!_tankID || !context.hasEntity(_tankID)) {
+               return continueTo(addTank);
              }
 
              var ids = context.selectedIDs();
 
-             if (mode.id !== 'select' || !ids.length || ids[0] !== _houseID) {
-               return continueTo(chooseCategoryBuilding);
+             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..
+
+               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.buildings.search_tank', {
+                 preset: tankPreset.name()
+               }));
+               context.history().on('change.intro', null);
              }
            });
 
+           function checkPresetSearch() {
+             var first = context.container().select('.preset-list-item:first-child');
+
+             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);
+               });
+             }
+           }
+
            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);
+             context.history().on('change.intro', null);
+             context.container().select('.preset-search-input').on('keydown.intro keyup.intro', null);
              nextStep();
            }
          }
 
-         function closeEditorHouse() {
-           if (!_houseID || !context.hasEntity(_houseID)) {
-             return addHouse();
+         function closeEditorTank() {
+           if (!_tankID || !context.hasEntity(_tankID)) {
+             return addTank();
            }
 
            var ids = context.selectedIDs();
 
-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _houseID) {
-             context.enter(modeSelect(context, [_houseID]));
+           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _tankID) {
+             context.enter(modeSelect(context, [_tankID]));
            }
 
-           context.history().checkpoint('hasHouse');
+           context.history().checkpoint('hasTank');
            context.on('exit.intro', function () {
-             continueTo(rightClickHouse);
+             continueTo(rightClickTank);
            });
            timeout(function () {
              reveal('.entity-editor-pane', helpHtml('intro.buildings.close', {
-               button: icon('#iD-icon-close', 'inline')
+               button: {
+                 html: icon('#iD-icon-close', 'inline')
+               }
              }));
            }, 500);
 
            }
          }
 
-         function rightClickHouse() {
-           if (!_houseID) return chapter.restart();
+         function rightClickTank() {
+           if (!_tankID) return continueTo(addTank);
            context.enter(modeBrowse(context));
-           context.history().reset('hasHouse');
-           var zoom = context.map().zoom();
-
-           if (zoom < 20) {
-             zoom = 20;
-           }
-
-           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().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
              });
-           });
-           context.history().on('change.intro', function () {
-             continueTo(rightClickHouse);
-           });
+             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 continueTo(nextStep) {
              context.on('enter.intro', null);
            }
          }
 
-         function clickSquare() {
-           if (!_houseID) return chapter.restart();
-           var entity = context.hasEntity(_houseID);
-           if (!entity) return continueTo(rightClickHouse);
-           var node = selectMenuItem(context, 'orthogonalize').node();
+         function clickCircle() {
+           if (!_tankID) return chapter.restart();
+           var entity = context.hasEntity(_tankID);
+           if (!entity) return continueTo(rightClickTank);
+           var node = selectMenuItem(context, 'circularize').node();
 
            if (!node) {
-             return continueTo(rightClickHouse);
+             return continueTo(rightClickTank);
            }
 
            var wasChanged = false;
-           reveal('.edit-menu', helpHtml('intro.buildings.square_building'), {
+           reveal('.edit-menu', helpHtml('intro.buildings.circle_tank'), {
              padding: 50
            });
            context.on('enter.intro', function (mode) {
              if (mode.id === 'browse') {
-               continueTo(rightClickHouse);
+               continueTo(rightClickTank);
              } else if (mode.id === 'move' || mode.id === 'rotate') {
-               continueTo(retryClickSquare);
+               continueTo(retryClickCircle);
              }
            });
            context.map().on('move.intro', function () {
-             var node = selectMenuItem(context, 'orthogonalize').node();
+             var node = selectMenuItem(context, 'circularize').node();
 
              if (!wasChanged && !node) {
-               return continueTo(rightClickHouse);
+               return continueTo(rightClickTank);
              }
 
-             reveal('.edit-menu', helpHtml('intro.buildings.square_building'), {
+             reveal('.edit-menu', helpHtml('intro.buildings.circle_tank'), {
                duration: 0,
                padding: 50
              });
              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', {
+               if (context.history().undoAnnotation() === _t('operations.circularize.annotation.feature', {
                  n: 1
                })) {
-                 continueTo(doneSquare);
+                 continueTo(play);
                } else {
-                 continueTo(retryClickSquare);
+                 continueTo(retryClickCircle);
                }
              }, 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();
-           }
-         }
+           function continueTo(nextStep) {
+             context.on('enter.intro', null);
+             context.map().on('move.intro', null);
+             context.history().on('change.intro', null);
+             nextStep();
+           }
+         }
+
+         function retryClickCircle() {
+           context.enter(modeBrowse(context));
+           revealTank(tank, helpHtml('intro.buildings.retry_circle'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               continueTo(rightClickTank);
+             }
+           });
+
+           function continueTo(nextStep) {
+             nextStep();
+           }
+         }
+
+         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');
+             }
+           });
+         }
+
+         chapter.enter = function () {
+           addHouse();
+         };
+
+         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();
+         };
+
+         return utilRebind(chapter, dispatch, 'on');
+       }
+
+       function uiIntroStartEditing(context, reveal) {
+         var dispatch = dispatch$8('done', 'startEditing');
+         var modalSelection = select(null);
+         var chapter = {
+           title: 'intro.startediting.title'
+         };
+
+         function showHelp() {
+           reveal('.map-control.help-control', helpHtml('intro.startediting.help'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               shortcuts();
+             }
+           });
+         }
+
+         function shortcuts() {
+           reveal('.map-control.help-control', helpHtml('intro.startediting.shortcuts'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               showSave();
+             }
+           });
+         }
+
+         function showSave() {
+           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
+
+           reveal('.top-toolbar button.save', helpHtml('intro.startediting.save'), {
+             buttonText: _t.html('intro.ok'),
+             buttonCallback: function buttonCallback() {
+               showStart();
+             }
+           });
+         }
+
+         function showStart() {
+           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
+
+           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').call(_t.append('intro.startediting.start'));
+           dispatch.call('startEditing');
+         }
+
+         chapter.enter = function () {
+           showHelp();
+         };
+
+         chapter.exit = function () {
+           modalSelection.remove();
+           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
+         };
+
+         return utilRebind(chapter, dispatch, 'on');
+       }
+
+       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;
+
+         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]));
+               }
+             }
+
+             selection.call(startIntro);
+           })["catch"](function () {
+             /* ignore */
+           });
+         }
+
+         function startIntro(selection) {
+           context.enter(modeBrowse(context)); // Save current map state
+
+           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
+
+           context.inIntro(true); // Load semi-real data used in intro
+
+           if (osm) {
+             osm.toggle(false).reset();
+           }
+
+           context.history().reset();
+           context.history().merge(Object.values(coreGraph().load(_introGraph).entities));
+           context.history().checkpoint('initial'); // Setup imagery
+
+           var imagery = context.background().findSource(INTRO_IMAGERY);
+
+           if (imagery) {
+             context.background().baseLayerSource(imagery);
+           } else {
+             context.background().bing();
+           }
+
+           overlays.forEach(function (d) {
+             return context.background().toggleOverlayLayer(d);
+           }); // Setup data layers (only OSM)
+
+           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..
+
+           corePreferences('walkthrough_started', 'yes'); // Restore previous walkthrough progress..
+
+           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 (i < chapterFlow.length - 1) {
+                 var next = chapterFlow[i + 1];
+                 context.container().select("button.chapter-".concat(next)).classed('next', true);
+               } // Store walkthrough progress..
+
+
+               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..
+
+             var incomplete = utilArrayDifference(chapterFlow, progress);
+
+             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);
+
+             if (osm) {
+               osm.toggle(true).reset().caches(caches);
+             }
+
+             context.history().reset().merge(Object.values(baseEntities));
+             context.background().baseLayerSource(background);
+             overlays.forEach(function (d) {
+               return context.background().toggleOverlayLayer(d);
+             });
+
+             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]);
+
+           function enterChapter(d3_event, newChapter) {
+             if (_currChapter) {
+               _currChapter.exit();
+             }
+
+             context.enter(modeBrowse(context));
+             _currChapter = newChapter;
+
+             _currChapter.enter();
+
+             buttons.classed('next', false).classed('active', function (d) {
+               return d.title === _currChapter.title;
+             });
+           }
+         }
+
+         return intro;
+       }
+
+       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 update(selection) {
+           var shownItems = [];
+           var liveIssues = context.validator().getIssues({
+             what: corePreferences('validate-what') || 'edited',
+             where: corePreferences('validate-where') || 'all'
+           });
+
+           if (liveIssues.length) {
+             warningsItem.count = liveIssues.length;
+             shownItems.push(warningsItem);
+           }
+
+           if (corePreferences('validate-what') === 'all') {
+             var resolvedIssues = context.validator().getResolvedIssues();
+
+             if (resolvedIssues.length) {
+               resolvedItem.count = resolvedIssues.length;
+               shownItems.push(resolvedItem);
+             }
+           }
+
+           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
+
+               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').text(function (d) {
+             return d.count.toString();
+           });
+         }
+
+         return function (selection) {
+           update(selection);
+           context.validator().on('validated.infobox', function () {
+             update(selection);
+           });
+         };
+       }
+
+       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)
+
+           var _dMini; // dimensions of minimap
 
-         function retryClickSquare() {
-           context.enter(modeBrowse(context));
-           revealHouse(house, helpHtml('intro.buildings.retry_square'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               continueTo(rightClickHouse);
-             }
-           });
 
-           function continueTo(nextStep) {
-             nextStep();
-           }
-         }
+           var _cMini; // center pixel of minimap
 
-         function doneSquare() {
-           context.history().checkpoint('doneSquare');
-           revealHouse(house, helpHtml('intro.buildings.done_square'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               continueTo(addTank);
-             }
-           });
 
-           function continueTo(nextStep) {
-             nextStep();
-           }
-         }
+           var _tStart; // transform at start of gesture
 
-         function addTank() {
-           context.enter(modeBrowse(context));
-           context.history().reset('doneSquare');
-           _tankID = null;
-           var msec = transitionTime(tank, context.map().center());
 
-           if (msec) {
-             reveal(null, null, {
-               duration: 0
-             });
-           }
+           var _tCurr; // transform at most recent event
 
-           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 continueTo(nextStep) {
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
+           var _timeoutID;
 
-         function startTank() {
-           if (context.mode().id !== 'add-area') {
-             return continueTo(addTank);
+           function zoomStarted() {
+             if (_skipEvents) return;
+             _tStart = _tCurr = projection.transform();
+             _gesture = null;
            }
 
-           _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 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 continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
-           }
-         }
+             if (!isZooming && !isPanning) {
+               return; // no change
+             } // lock in either zooming or panning, don't allow both in minimap.
 
-         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
-             });
-           });
-           context.on('enter.intro', function (mode) {
-             if (mode.id === 'draw-area') {
-               return;
-             } else if (mode.id === 'select') {
-               _tankID = context.selectedIDs()[0];
-               return continueTo(searchPresetTank);
+             if (!_gesture) {
+               _gesture = isZooming ? 'zoom' : 'pan';
+             }
+
+             var tMini = projection.transform();
+             var tX, tY, scale;
+
+             if (_gesture === 'zoom') {
+               scale = k / tMini.k;
+               tX = (_cMini[0] / scale - _cMini[0]) * scale;
+               tY = (_cMini[1] / scale - _cMini[1]) * scale;
              } else {
-               return continueTo(addTank);
+               k = tMini.k;
+               scale = 1;
+               tX = x - tMini.x;
+               tY = y - tMini.y;
              }
-           });
 
-           function continueTo(nextStep) {
-             context.map().on('move.intro drawn.intro', null);
-             context.on('enter.intro', null);
-             nextStep();
+             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 searchPresetTank() {
-           if (!_tankID || !context.hasEntity(_tankID)) {
-             return addTank();
+           function zoomEnded() {
+             if (_skipEvents) return;
+             if (_gesture !== 'pan') return;
+             updateProjection();
+             _gesture = null;
+             context.map().center(projection.invert(_cMini)); // recenter main map..
            }
 
-           var ids = context.selectedIDs();
-
-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _tankID) {
-             context.enter(modeSelect(context, [_tankID]));
-           } // disallow scrolling
+           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();
 
+             if (_isTransformed) {
+               utilSetTransform(tiles, 0, 0);
+               utilSetTransform(viewport, 0, 0);
+               _isTransformed = 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%');
-             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..
+             zoom.scaleExtent([geoZoomToScale(0.5), geoZoomToScale(zMain - 3)]);
+             _skipEvents = true;
+             wrap.call(zoom.transform, _tCurr);
+             _skipEvents = false;
+           }
 
-           context.on('enter.intro', function (mode) {
-             if (!_tankID || !context.hasEntity(_tankID)) {
-               return continueTo(addTank);
-             }
+           function redraw() {
+             clearTimeout(_timeoutID);
+             if (_isHidden) return;
+             updateProjection();
+             var zMini = geoScaleToZoom(projection.scale()); // setup tile container
 
-             var ids = context.selectedIDs();
+             tiles = wrap.selectAll('.map-in-map-tiles').data([0]);
+             tiles = tiles.enter().append('div').attr('class', 'map-in-map-tiles').merge(tiles); // redraw background
 
-             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..
+             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
 
-               context.container().select('.inspector-wrap .panewrap').style('right', '-100%'); // disallow scrolling
+             var overlaySources = context.background().overlayLayerSources();
+             var activeOverlayLayers = [];
 
-               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);
+             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 checkPresetSearch() {
-             var first = context.container().select('.preset-list-item:first-child');
+             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 (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 (_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 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 queueRedraw() {
+             clearTimeout(_timeoutID);
+             _timeoutID = setTimeout(function () {
+               redraw();
+             }, 750);
            }
-         }
 
-         function closeEditorTank() {
-           if (!_tankID || !context.hasEntity(_tankID)) {
-             return addTank();
+           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 (_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();
+               });
+             }
            }
 
-           var ids = context.selectedIDs();
+           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..
 
-           if (context.mode().id !== 'select' || !ids.length || ids[0] !== _tankID) {
-             context.enter(modeSelect(context, [_tankID]));
-           }
+           _dMini = [200, 150]; //utilGetDimensions(wrap);
 
-           context.history().checkpoint('hasTank');
-           context.on('exit.intro', function () {
-             continueTo(rightClickTank);
+           _cMini = geoVecScale(_dMini, 0.5);
+           context.map().on('drawn.map-in-map', function (drawn) {
+             if (drawn.full === true) {
+               redraw();
+             }
            });
-           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();
-           }
+           redraw();
+           context.keybinding().on(_t('background.minimap.key'), toggle);
          }
 
-         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 continueTo(nextStep) {
-             context.on('enter.intro', null);
-             context.map().on('move.intro drawn.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+         return mapInMap;
+       }
 
-         function clickCircle() {
-           if (!_tankID) return chapter.restart();
-           var entity = context.hasEntity(_tankID);
-           if (!entity) return continueTo(rightClickTank);
-           var node = selectMenuItem(context, 'circularize').node();
+       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').call(_t.append('zoom_in_edit'));
 
-           if (!node) {
-             return continueTo(rightClickTank);
+           function disableTooHigh() {
+             var canEdit = context.map().zoom() >= context.minEditableZoom();
+             div.style('display', canEdit ? 'none' : 'block');
            }
 
-           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();
+           context.map().on('move.notice', debounce(disableTooHigh, 500));
+           disableTooHigh();
+         };
+       }
 
-             if (!wasChanged && !node) {
-               return continueTo(rightClickTank);
-             }
+       function uiPhotoviewer(context) {
+         var dispatch = dispatch$8('resize');
 
-             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.
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
 
-             timeout(function () {
-               if (context.history().undoAnnotation() === _t('operations.circularize.annotation.feature', {
-                 n: 1
-               })) {
-                 continueTo(play);
-               } else {
-                 continueTo(retryClickCircle);
-               }
-             }, 500); // after transitioned actions
-           });
+         function photoviewer(selection) {
+           selection.append('button').attr('class', 'thumb-hide').attr('title', _t('icons.close')).on('click', function () {
+             if (services.streetside) {
+               services.streetside.hideViewer(context);
+             }
 
-           function continueTo(nextStep) {
-             context.on('enter.intro', null);
-             context.map().on('move.intro', null);
-             context.history().on('change.intro', null);
-             nextStep();
-           }
-         }
+             if (services.mapillary) {
+               services.mapillary.hideViewer(context);
+             }
 
-         function retryClickCircle() {
-           context.enter(modeBrowse(context));
-           revealTank(tank, helpHtml('intro.buildings.retry_circle'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               continueTo(rightClickTank);
+             if (services.kartaview) {
+               services.kartaview.hideViewer(context);
              }
-           });
+           }).append('div').call(svgIcon('#iD-icon-close'));
 
-           function continueTo(nextStep) {
-             nextStep();
+           function preventDefault(d3_event) {
+             d3_event.preventDefault();
            }
-         }
 
-         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');
-             }
-           });
-         }
+           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
+           }));
 
-         chapter.enter = function () {
-           addHouse();
-         };
+           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;
 
-         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 startResize(d3_event) {
+               if (pointerId !== (d3_event.pointerId || 'mouse')) return;
+               d3_event.preventDefault();
+               d3_event.stopPropagation();
+               var mapSize = context.map().dimensions();
 
-         chapter.restart = function () {
-           chapter.exit();
-           chapter.enter();
-         };
+               if (resizeOnX) {
+                 var maxWidth = mapSize[0];
+                 var newWidth = clamp(startWidth + d3_event.clientX - startX, minWidth, maxWidth);
+                 target.style('width', newWidth + 'px');
+               }
 
-         return utilRebind(chapter, dispatch, 'on');
-       }
+               if (resizeOnY) {
+                 var maxHeight = mapSize[1] - 90; // preserve space at top/bottom of map
 
-       function uiIntroStartEditing(context, reveal) {
-         var dispatch = dispatch$8('done', 'startEditing');
-         var modalSelection = select(null);
-         var chapter = {
-           title: 'intro.startediting.title'
-         };
+                 var newHeight = clamp(startHeight + startY - d3_event.clientY, minHeight, maxHeight);
+                 target.style('height', newHeight + 'px');
+               }
 
-         function showHelp() {
-           reveal('.map-control.help-control', helpHtml('intro.startediting.help'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               shortcuts();
+               dispatch.call(eventName, target, utilGetDimensions(target, true));
              }
-           });
-         }
 
-         function shortcuts() {
-           reveal('.map-control.help-control', helpHtml('intro.startediting.shortcuts'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               showSave();
+             function clamp(num, min, max) {
+               return Math.max(min, Math.min(num, max));
              }
-           });
-         }
 
-         function showSave() {
-           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
+             function stopResize(d3_event) {
+               if (pointerId !== (d3_event.pointerId || 'mouse')) return;
+               d3_event.preventDefault();
+               d3_event.stopPropagation(); // remove all the listeners we added
 
-           reveal('.top-toolbar button.save', helpHtml('intro.startediting.save'), {
-             buttonText: _t.html('intro.ok'),
-             buttonCallback: function buttonCallback() {
-               showStart();
+               select(window).on('.' + eventName, null);
              }
-           });
-         }
 
-         function showStart() {
-           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
+             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);
 
-           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 (_pointerPrefix === 'pointer') {
+                 select(window).on('pointercancel.' + eventName, stopResize, false);
+               }
+             };
+           }
          }
 
-         chapter.enter = function () {
-           showHelp();
-         };
+         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)
 
-         chapter.exit = function () {
-           modalSelection.remove();
-           context.container().selectAll('.shaded').remove(); // in case user opened keyboard shortcuts
+           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);
+           }
          };
 
-         return utilRebind(chapter, dispatch, 'on');
+         return utilRebind(photoviewer, dispatch, 'on');
        }
 
-       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;
-
-         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]));
-               }
-             }
-
-             selection.call(startIntro);
-           })["catch"](function () {
-             /* ignore */
+       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').call(_t.append('restore.heading'));
+           introModal.append('div').attr('class', 'modal-section').append('p').call(_t.append('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').call(_t.append('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').call(_t.append('restore.reset'));
+           restore.node().focus();
+         };
+       }
 
-         function startIntro(selection) {
-           context.enter(modeBrowse(context)); // Save current map state
+       function uiScale(context) {
+         var projection = context.projection,
+             isImperial = !_mainLocalizer.usesMetric(),
+             maxLength = 180,
+             tickHeight = 8;
 
-           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)`)
+         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;
 
-           context.ui().sidebar.expand();
-           context.container().selectAll('button.sidebar-toggle').classed('disabled', true); // Block saving
+           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
 
-           context.inIntro(true); // Load semi-real data used in intro
 
-           if (osm) {
-             osm.toggle(false).reset();
+           for (i = 0; i < buckets.length; i++) {
+             val = buckets[i];
+
+             if (dist >= val) {
+               scale.dist = Math.floor(dist / val) * val;
+               break;
+             } else {
+               scale.dist = +dist.toFixed(2);
+             }
            }
 
-           context.history().reset();
-           context.history().merge(Object.values(coreGraph().load(_introGraph).entities));
-           context.history().checkpoint('initial'); // Setup imagery
+           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;
+         }
 
-           var imagery = context.background().findSource(INTRO_IMAGERY);
+         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').text(scale.text);
+         }
 
-           if (imagery) {
-             context.background().baseLayerSource(imagery);
-           } else {
-             context.background().bing();
+         return function (selection) {
+           function switchUnits() {
+             isImperial = !isImperial;
+             selection.call(update);
            }
 
-           overlays.forEach(function (d) {
-             return context.background().toggleOverlayLayer(d);
-           }); // Setup data layers (only OSM)
-
-           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');
-             }
+           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);
            });
-           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..
+         };
+       }
 
-           corePreferences('walkthrough_started', 'yes'); // Restore previous walkthrough progress..
+       function uiShortcuts(context) {
+         var detected = utilDetect();
+         var _activeTab = 0;
 
-           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);
+         var _modalSelection;
 
-               if (i < chapterFlow.length - 1) {
-                 var next = chapterFlow[i + 1];
-                 context.container().select("button.chapter-".concat(next)).classed('next', true);
-               } // Store walkthrough progress..
+         var _selection = select(null);
 
+         var _dataShortcuts;
 
-               progress.push(chapter);
-               corePreferences('walkthrough_progress', utilArrayUniq(progress).join(';'));
-             });
-             return s;
+         function shortcutsModal(_modalSelection) {
+           _modalSelection.select('.modal').classed('modal-shortcuts', true);
+
+           var content = _modalSelection.select('.content');
+
+           content.append('div').attr('class', 'modal-section header').append('h2').call(_t.append('shortcuts.title'));
+           _mainFileFetcher.get('shortcuts').then(function (data) {
+             _dataShortcuts = data;
+             content.call(render);
+           })["catch"](function () {
+             /* ignore */
            });
-           chapters[chapters.length - 1].on('startEditing', function () {
-             // Store walkthrough progress..
-             progress.push('startEditing');
-             corePreferences('walkthrough_progress', utilArrayUniq(progress).join(';')); // Store if walkthrough is completed..
+         }
 
-             var incomplete = utilArrayDifference(chapterFlow, progress);
+         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 (!incomplete.length) {
-               corePreferences('walkthrough_completed', 'yes');
-             }
+             var i = _dataShortcuts.indexOf(d);
 
-             curtain.remove();
-             navwrap.remove();
-             context.container().selectAll('.main-map .layer-background').style('opacity', opacity);
-             context.container().selectAll('button.sidebar-toggle').classed('disabled', false);
+             _activeTab = i;
+             render(selection);
+           });
+           tabsEnter.append('span').html(function (d) {
+             return _t.html(d.text);
+           }); // Update
 
-             if (osm) {
-               osm.toggle(true).reset().caches(caches);
+           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;
              }
+           }).enter().each(function () {
+             var selection = select(this);
+             selection.append('kbd').attr('class', 'modifier').text(function (d) {
+               return uiCmd.display(d);
+             });
+             selection.append('span').text('+');
+           });
+           shortcutKeys.selectAll('kbd.shortcut').data(function (d) {
+             var arr = d.shortcuts;
 
-             context.history().reset().merge(Object.values(baseEntities));
-             context.background().baseLayerSource(background);
-             overlays.forEach(function (d) {
-               return context.background().toggleOverlayLayer(d);
+             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
+
+
+             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/);
 
-             if (history) {
-               context.history().fromJSON(history, false);
+             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').text(function (d) {
+                 return d.shortcut;
+               });
              }
 
-             context.map().centerZoom(center, zoom);
-             window.location.replace(hash);
-             context.inIntro(false);
+             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').text(d.suffix);
+             }
            });
-           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);
+           shortcutKeys.filter(function (d) {
+             return d.gesture;
+           }).each(function () {
+             var selection = select(this);
+             selection.append('span').text('+');
+             selection.append('span').attr('class', 'gesture').html(function (d) {
+               return _t.html(d.gesture);
+             });
            });
-           buttons.append('span').attr('class', 'status').call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward', 'inline'));
-           enterChapter(null, chapters[0]);
+           shortcutRows.append('td').attr('class', 'shortcut-desc').html(function (d) {
+             return d.text ? _t.html(d.text) : "\xA0";
+           }); // Update
 
-           function enterChapter(d3_event, newChapter) {
-             if (_currChapter) {
-               _currChapter.exit();
-             }
+           wrapper.selectAll('.shortcut-tab').style('display', function (d, i) {
+             return i === _activeTab ? 'flex' : 'none';
+           });
+         }
 
-             context.enter(modeBrowse(context));
-             _currChapter = newChapter;
+         return function (selection, show) {
+           _selection = selection;
 
-             _currChapter.enter();
+           if (show) {
+             _modalSelection = uiModal(selection);
 
-             buttons.classed('next', false).classed('active', function (d) {
-               return d.title === _currChapter.title;
+             _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();
+
+                   _modalSelection = null;
+                 }
+               } else {
+                 _modalSelection = uiModal(_selection);
+
+                 _modalSelection.call(shortcutsModal);
+               }
              });
            }
+         };
+       }
+
+       function uiDataHeader() {
+         var _datum;
+
+         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').call(_t.append('map_data.layers.custom.title'));
          }
 
-         return intro;
+         dataHeader.datum = function (val) {
+           if (!arguments.length) return _datum;
+           _datum = val;
+           return this;
+         };
+
+         return dataHeader;
        }
 
-       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'
+       // 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 = 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;
+
+         var _mouseEnterHandler, _mouseLeaveHandler;
+
+         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;
+             });
+           }));
          };
 
-         function update(selection) {
-           var shownItems = [];
-           var liveIssues = context.validator().getIssues({
-             what: corePreferences('validate-what') || 'edited',
-             where: corePreferences('validate-where') || 'all'
+         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
+
+               input.node().focus(); // focus the input as if it was clicked
+
+               mousedown(d3_event);
+             }).on('mouseup.combo-caret', function (d3_event) {
+               d3_event.preventDefault(); // don't steal focus from input
+
+               mouseup(d3_event);
+             });
            });
 
-           if (liveIssues.length) {
-             warningsItem.count = liveIssues.length;
-             shownItems.push(warningsItem);
-           }
+           function mousedown(d3_event) {
+             if (d3_event.button !== 0) return; // left click only
+
+             if (input.classed('disabled')) return;
+             _tDown = +new Date(); // clear selection
 
-           if (corePreferences('validate-what') === 'all') {
-             var resolvedIssues = context.validator().getResolvedIssues();
+             var start = input.property('selectionStart');
+             var end = input.property('selectionEnd');
 
-             if (resolvedIssues.length) {
-               resolvedItem.count = resolvedIssues.length;
-               shownItems.push(resolvedItem);
+             if (start !== end) {
+               var val = utilGetSetValue(input);
+               input.node().setSelectionRange(val.length, val.length);
+               return;
              }
+
+             input.on('mouseup.combo-input', mouseup);
            }
 
-           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
+           function mouseup(d3_event) {
+             input.on('mouseup.combo-input', null);
+             if (d3_event.button !== 0) return; // left click only
 
-               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 (input.classed('disabled')) return;
+             if (input.node() !== document.activeElement) return; // exit if this input is not focused
 
-         return function (selection) {
-           update(selection);
-           context.validator().on('validated.infobox', function () {
-             update(selection);
-           });
-         };
-       }
+             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 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)
+             var combo = container.selectAll('.combobox');
 
-           var _dMini; // dimensions of minimap
+             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 _cMini; // center pixel of minimap
+           function focus() {
+             fetchComboData(''); // prefetch values (may warm taginfo cache)
+           }
 
+           function blur() {
+             _comboHideTimerID = window.setTimeout(hide, 75);
+           }
 
-           var _tStart; // transform at start of gesture
+           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);
+           }
 
-           var _tCurr; // transform at most recent event
+           function hide() {
+             if (_comboHideTimerID) {
+               window.clearTimeout(_comboHideTimerID);
+               _comboHideTimerID = undefined;
+             }
 
+             container.selectAll('.combobox').remove();
+             container.on('scroll.combo-scroll', null);
+           }
 
-           var _timeoutID;
+           function keydown(d3_event) {
+             var shown = !container.selectAll('.combobox').empty();
+             var tagName = input.node() ? input.node().tagName.toLowerCase() : '';
 
-           function zoomStarted() {
-             if (_skipEvents) return;
-             _tStart = _tCurr = projection.transform();
-             _gesture = null;
-           }
+             switch (d3_event.keyCode) {
+               case 8: // ⌫ Backspace
 
-           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;
+               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;
 
-             if (!isZooming && !isPanning) {
-               return; // no change
-             } // lock in either zooming or panning, don't allow both in minimap.
+               case 9:
+                 // ⇥ Tab
+                 accept();
+                 break;
 
+               case 13:
+                 // ↩ Return
+                 d3_event.preventDefault();
+                 d3_event.stopPropagation();
+                 break;
 
-             if (!_gesture) {
-               _gesture = isZooming ? 'zoom' : 'pan';
-             }
+               case 38:
+                 // ↑ Up arrow
+                 if (tagName === 'textarea' && !shown) return;
+                 d3_event.preventDefault();
 
-             var tMini = projection.transform();
-             var tX, tY, scale;
+                 if (tagName === 'input' && !shown) {
+                   show();
+                 }
 
-             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;
-             }
+                 nav(-1);
+                 break;
 
-             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();
-           }
+               case 40:
+                 // ↓ Down arrow
+                 if (tagName === 'textarea' && !shown) return;
+                 d3_event.preventDefault();
 
-           function zoomEnded() {
-             if (_skipEvents) return;
-             if (_gesture !== 'pan') return;
-             updateProjection();
-             _gesture = null;
-             context.map().center(projection.invert(_cMini)); // recenter main map..
+                 if (tagName === 'input' && !shown) {
+                   show();
+                 }
+
+                 nav(+1);
+                 break;
+             }
            }
 
-           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 keyup(d3_event) {
+             switch (d3_event.keyCode) {
+               case 27:
+                 // ⎋ Escape
+                 cancel();
+                 break;
 
-             if (_isTransformed) {
-               utilSetTransform(tiles, 0, 0);
-               utilSetTransform(viewport, 0, 0);
-               _isTransformed = false;
+               case 13:
+                 // ↩ Return
+                 accept();
+                 break;
              }
+           } // Called whenever the input value is changed (e.g. on typing)
 
-             zoom.scaleExtent([geoZoomToScale(0.5), geoZoomToScale(zMain - 3)]);
-             _skipEvents = true;
-             wrap.call(zoom.transform, _tCurr);
-             _skipEvents = false;
-           }
 
-           function redraw() {
-             clearTimeout(_timeoutID);
-             if (_isHidden) return;
-             updateProjection();
-             var zMini = geoScaleToZoom(projection.scale()); // setup tile container
+           function change() {
+             fetchComboData(value(), function () {
+               _selected = null;
+               var val = input.property('value');
 
-             tiles = wrap.selectAll('.map-in-map-tiles').data([0]);
-             tiles = tiles.enter().append('div').attr('class', 'map-in-map-tiles').merge(tiles); // redraw background
+               if (_suggestions.length) {
+                 if (input.property('selectionEnd') === val.length) {
+                   _selected = tryAutocomplete();
+                 }
 
-             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
+                 if (!_selected) {
+                   _selected = val;
+                 }
+               }
 
-             var overlaySources = context.background().overlayLayerSources();
-             var activeOverlayLayers = [];
+               if (val.length) {
+                 var combo = container.selectAll('.combobox');
 
-             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));
+                 if (combo.empty()) {
+                   show();
+                 }
+               } else {
+                 hide();
                }
-             }
 
-             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);
+               render();
              });
-             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
+           } // Called when the user presses up/down arrows to navigate the list
 
-             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 nav(dir) {
+             if (_suggestions.length) {
+               // try to determine previously selected index..
+               var index = -1;
+
+               for (var i = 0; i < _suggestions.length; i++) {
+                 if (_selected && _suggestions[i].value === _selected) {
+                   index = i;
+                   break;
+                 }
+               } // pick new _selected
+
+
+               index = Math.max(Math.min(index + dir, _suggestions.length - 1), 0);
+               _selected = _suggestions[index].value;
+               input.property('value', _selected);
              }
-           }
 
-           function queueRedraw() {
-             clearTimeout(_timeoutID);
-             _timeoutID = setTimeout(function () {
-               redraw();
-             }, 750);
+             render();
+             ensureVisible();
            }
 
-           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);
+           function ensureVisible() {
+             var combo = container.selectAll('.combobox');
+             if (combo.empty()) return;
+             var containerRect = container.node().getBoundingClientRect();
+             var comboRect = combo.node().getBoundingClientRect();
 
-             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');
+             if (comboRect.bottom > containerRect.bottom) {
+               var node = attachTo ? attachTo.node() : input.node();
+               node.scrollIntoView({
+                 behavior: 'instant',
+                 block: 'center'
                });
-             } else {
-               wrap.style('display', 'block').style('opacity', '0').transition().duration(200).style('opacity', '1').on('end', function () {
-                 redraw();
+               render();
+             } // https://stackoverflow.com/questions/11039885/scrollintoview-causing-the-whole-page-to-move
+
+
+             var selected = combo.selectAll('.combobox-option.selected').node();
+
+             if (selected) {
+               selected.scrollIntoView({
+                 behavior: 'smooth',
+                 block: 'nearest'
                });
              }
            }
 
-           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);
+           function value() {
+             var value = input.property('value');
+             var start = input.property('selectionStart');
+             var end = input.property('selectionEnd');
 
-           _cMini = geoVecScale(_dMini, 0.5);
-           context.map().on('drawn.map-in-map', function (drawn) {
-             if (drawn.full === true) {
-               redraw();
+             if (start && end) {
+               value = value.substring(0, start);
              }
-           });
-           redraw();
-           context.keybinding().on(_t('background.minimap.key'), toggle);
-         }
 
-         return mapInMap;
-       }
+             return value;
+           }
 
-       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'));
+           function fetchComboData(v, cb) {
+             _cancelFetch = false;
 
-           function disableTooHigh() {
-             var canEdit = context.map().zoom() >= context.minEditableZoom();
-             div.style('display', canEdit ? 'none' : 'block');
+             _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();
+               }
+             });
            }
 
-           context.map().on('move.notice', debounce(disableTooHigh, 500));
-           disableTooHigh();
-         };
-       }
+           function tryAutocomplete() {
+             if (!_canAutocomplete) return;
+             var val = _caseSensitive ? value() : value().toLowerCase();
+             if (!val) return; // Don't autocomplete if user is typing a number - #4935
 
-       function uiPhotoviewer(context) {
-         var dispatch = dispatch$8('resize');
+             if (!isNaN(parseFloat(val)) && isFinite(val)) return;
+             var bestIndex = -1;
 
-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
+             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..
 
-         function photoviewer(selection) {
-           selection.append('button').attr('class', 'thumb-hide').on('click', function () {
-             if (services.streetside) {
-               services.streetside.hideViewer(context);
+               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;
+               }
              }
 
-             if (services.mapillary) {
-               services.mapillary.hideViewer(context);
+             if (bestIndex !== -1) {
+               var bestVal = _suggestions[bestIndex].value;
+               input.property('value', bestVal);
+               input.node().setSelectionRange(val.length, bestVal.length);
+               return bestVal;
              }
+           }
 
-             if (services.openstreetcam) {
-               services.openstreetcam.hideViewer(context);
+           function render() {
+             if (_suggestions.length < _minItems || document.activeElement !== input.node()) {
+               hide();
+               return;
              }
-           }).append('div').call(svgIcon('#iD-icon-close'));
 
-           function preventDefault(d3_event) {
-             d3_event.preventDefault();
+             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
+
+             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 accept(d3_event, d) {
+             _cancelFetch = true;
+             var thiz = input.node();
+
+             if (d) {
+               // user clicked on a suggestion
+               utilGetSetValue(input, d.value); // replace field contents
+
+               utilTriggerEvent(input, 'change');
+             } // clear (and keep) selection
+
+
+             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 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();
            }
+         };
 
-           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
-           }));
+         combobox.canAutocomplete = function (val) {
+           if (!arguments.length) return _canAutocomplete;
+           _canAutocomplete = val;
+           return combobox;
+         };
 
-           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;
+         combobox.caseSensitive = function (val) {
+           if (!arguments.length) return _caseSensitive;
+           _caseSensitive = val;
+           return combobox;
+         };
 
-             function startResize(d3_event) {
-               if (pointerId !== (d3_event.pointerId || 'mouse')) return;
-               d3_event.preventDefault();
-               d3_event.stopPropagation();
-               var mapSize = context.map().dimensions();
+         combobox.data = function (val) {
+           if (!arguments.length) return _data;
+           _data = val;
+           return combobox;
+         };
 
-               if (resizeOnX) {
-                 var maxWidth = mapSize[0];
-                 var newWidth = clamp(startWidth + d3_event.clientX - startX, minWidth, maxWidth);
-                 target.style('width', newWidth + 'px');
-               }
+         combobox.fetcher = function (val) {
+           if (!arguments.length) return _fetcher;
+           _fetcher = val;
+           return combobox;
+         };
 
-               if (resizeOnY) {
-                 var maxHeight = mapSize[1] - 90; // preserve space at top/bottom of map
+         combobox.minItems = function (val) {
+           if (!arguments.length) return _minItems;
+           _minItems = val;
+           return combobox;
+         };
 
-                 var newHeight = clamp(startHeight + startY - d3_event.clientY, minHeight, maxHeight);
-                 target.style('height', newHeight + 'px');
-               }
+         combobox.itemsMouseEnter = function (val) {
+           if (!arguments.length) return _mouseEnterHandler;
+           _mouseEnterHandler = val;
+           return combobox;
+         };
 
-               dispatch.call(eventName, target, utilGetDimensions(target, true));
-             }
+         combobox.itemsMouseLeave = function (val) {
+           if (!arguments.length) return _mouseLeaveHandler;
+           _mouseLeaveHandler = val;
+           return combobox;
+         };
 
-             function clamp(num, min, max) {
-               return Math.max(min, Math.min(num, max));
-             }
+         return utilRebind(combobox, dispatch, 'on');
+       }
 
-             function stopResize(d3_event) {
-               if (pointerId !== (d3_event.pointerId || 'mouse')) return;
-               d3_event.preventDefault();
-               d3_event.stopPropagation(); // remove all the listeners we added
+       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);
+       };
 
-               select(window).on('.' + eventName, null);
-             }
+       function uiDisclosure(context, key, expandedDefault) {
+         var dispatch = dispatch$8('toggled');
 
-             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);
+         var _expanded;
 
-               if (_pointerPrefix === 'pointer') {
-                 select(window).on('pointercancel.' + eventName, stopResize, false);
-               }
-             };
-           }
-         }
+         var _label = utilFunctor('');
 
-         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 _updatePreference = true;
 
-           var photoDimensions = utilGetDimensions(photoviewer, true);
+         var _content = function _content() {};
 
-           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);
+         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 utilRebind(photoviewer, dispatch, 'on');
-       }
+           var hideToggle = selection.selectAll('.hide-toggle-' + key).data([0]); // enter
 
-       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 hideToggleEnter = hideToggle.enter().append('h3').append('a').attr('role', 'button').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
 
-       function uiScale(context) {
-         var projection = context.projection,
-             isImperial = !_mainLocalizer.usesMetric(),
-             maxLength = 180,
-             tickHeight = 8;
+           hideToggle = hideToggleEnter.merge(hideToggle);
+           hideToggle.on('click', toggle).attr('title', _t("icons.".concat(_expanded ? 'collapse' : 'expand'))).attr('aria-expanded', _expanded).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
 
-         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;
+           wrap = wrap.enter().append('div').attr('class', 'disclosure-wrap disclosure-wrap-' + key).merge(wrap).classed('hide', !_expanded);
 
-           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
+           if (_expanded) {
+             wrap.call(_content);
+           }
 
+           function toggle(d3_event) {
+             d3_event.preventDefault();
+             _expanded = !_expanded;
 
-           for (i = 0; i < buckets.length; i++) {
-             val = buckets[i];
+             if (_updatePreference) {
+               corePreferences('disclosure.' + key + '.expanded', _expanded);
+             }
 
-             if (dist >= val) {
-               scale.dist = Math.floor(dist / val) * val;
-               break;
-             } else {
-               scale.dist = +dist.toFixed(2);
+             hideToggle.classed('expanded', _expanded).attr('aria-expanded', _expanded).attr('title', _t("icons.".concat(_expanded ? 'collapse' : 'expand')));
+             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 (_expanded) {
+               wrap.call(_content);
              }
+
+             dispatch.call('toggled', this, _expanded);
            }
+         };
 
-           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;
-         }
+         disclosure.label = function (val) {
+           if (!arguments.length) return _label;
+           _label = utilFunctor(val);
+           return disclosure;
+         };
 
-         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);
-         }
+         disclosure.expanded = function (val) {
+           if (!arguments.length) return _expanded;
+           _expanded = val;
+           return disclosure;
+         };
 
-         return function (selection) {
-           function switchUnits() {
-             isImperial = !isImperial;
-             selection.call(update);
-           }
+         disclosure.updatePreference = function (val) {
+           if (!arguments.length) return _updatePreference;
+           _updatePreference = val;
+           return disclosure;
+         };
 
-           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);
-           });
+         disclosure.content = function (val) {
+           if (!arguments.length) return _content;
+           _content = val;
+           return disclosure;
          };
+
+         return utilRebind(disclosure, dispatch, 'on');
        }
 
-       function uiShortcuts(context) {
-         var detected = utilDetect();
-         var _activeTab = 0;
+       // Can be labeled and collapsible.
 
-         var _modalSelection;
+       function uiSection(id, context) {
+         var _classes = utilFunctor('');
 
-         var _selection = select(null);
+         var _shouldDisplay;
 
-         var _dataShortcuts;
+         var _content;
 
-         function shortcutsModal(_modalSelection) {
-           _modalSelection.select('.modal').classed('modal-shortcuts', true);
+         var _disclosure;
 
-           var content = _modalSelection.select('.content');
+         var _label;
 
-           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 */
-           });
-         }
+         var _expandedByDefault = utilFunctor(true);
 
-         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();
+         var _disclosureContent;
 
-             var i = _dataShortcuts.indexOf(d);
+         var _disclosureExpanded;
 
-             _activeTab = i;
-             render(selection);
-           });
-           tabsEnter.append('span').html(function (d) {
-             return _t.html(d.text);
-           }); // Update
+         var _containerSelection = select(null);
 
-           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;
-             }
-           }).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;
+         var section = {
+           id: id
+         };
 
-             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
+         section.classes = function (val) {
+           if (!arguments.length) return _classes;
+           _classes = utilFunctor(val);
+           return section;
+         };
 
+         section.label = function (val) {
+           if (!arguments.length) return _label;
+           _label = utilFunctor(val);
+           return section;
+         };
 
-             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/);
+         section.expandedByDefault = function (val) {
+           if (!arguments.length) return _expandedByDefault;
+           _expandedByDefault = utilFunctor(val);
+           return section;
+         };
 
-             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;
-               });
-             }
+         section.shouldDisplay = function (val) {
+           if (!arguments.length) return _shouldDisplay;
+           _shouldDisplay = utilFunctor(val);
+           return section;
+         };
 
-             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
+         section.content = function (val) {
+           if (!arguments.length) return _content;
+           _content = val;
+           return section;
+         };
 
-           wrapper.selectAll('.shortcut-tab').style('display', function (d, i) {
-             return i === _activeTab ? 'flex' : 'none';
-           });
-         }
+         section.disclosureContent = function (val) {
+           if (!arguments.length) return _disclosureContent;
+           _disclosureContent = val;
+           return section;
+         };
 
-         return function (selection, show) {
-           _selection = selection;
+         section.disclosureExpanded = function (val) {
+           if (!arguments.length) return _disclosureExpanded;
+           _disclosureExpanded = val;
+           return section;
+         }; // may be called multiple times
 
-           if (show) {
-             _modalSelection = uiModal(selection);
 
-             _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();
+         section.render = function (selection) {
+           _containerSelection = selection.selectAll('.section-' + id).data([0]);
 
-                   _modalSelection = null;
-                 }
-               } else {
-                 _modalSelection = uiModal(_selection);
+           var sectionEnter = _containerSelection.enter().append('div').attr('class', 'section section-' + id + ' ' + (_classes && _classes() || ''));
 
-                 _modalSelection.call(shortcutsModal);
-               }
-             });
-           }
-         };
-       }
+           _containerSelection = sectionEnter.merge(_containerSelection);
 
-       function uiDataHeader() {
-         var _datum;
+           _containerSelection.call(renderContent);
+         };
 
-         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'));
-         }
+         section.reRender = function () {
+           _containerSelection.call(renderContent);
+         };
 
-         dataHeader.datum = function (val) {
-           if (!arguments.length) return _datum;
-           _datum = val;
-           return this;
+         section.selection = function () {
+           return _containerSelection;
          };
 
-         return dataHeader;
-       }
+         section.disclosure = function () {
+           return _disclosure;
+         }; // may be called multiple times
 
-       // 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 renderContent(selection) {
+           if (_shouldDisplay) {
+             var shouldDisplay = _shouldDisplay();
 
-       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;
+             selection.classed('hide', !shouldDisplay);
 
-         var _mouseEnterHandler, _mouseLeaveHandler;
+             if (!shouldDisplay) {
+               selection.html('');
+               return;
+             }
+           }
 
-         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;
-             });
-           }));
-         };
+           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 (_disclosureExpanded !== undefined) {
+               _disclosure.expanded(_disclosureExpanded);
+
+               _disclosureExpanded = undefined;
+             }
 
-         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
+             selection.call(_disclosure);
+             return;
+           }
 
-               input.node().focus(); // focus the input as if it was clicked
+           if (_content) {
+             selection.call(_content);
+           }
+         }
 
-               mousedown(d3_event);
-             }).on('mouseup.combo-caret', function (d3_event) {
-               d3_event.preventDefault(); // don't steal focus from input
+         return section;
+       }
 
-               mouseup(d3_event);
-             });
-           });
+       // {
+       //   key: 'string',     // required
+       //   value: 'string'    // optional
+       // }
+       //   -or-
+       // {
+       //   qid: 'string'      // brand wikidata  (e.g. 'Q37158')
+       // }
+       //
 
-           function mousedown(d3_event) {
-             if (d3_event.button !== 0) return; // left click only
+       function uiTagReference(what) {
+         var wikibase = what.qid ? services.wikidata : services.osmWikibase;
+         var tagReference = {};
 
-             _tDown = +new Date(); // clear selection
+         var _button = select(null);
 
-             var start = input.property('selectionStart');
-             var end = input.property('selectionEnd');
+         var _body = select(null);
 
-             if (start !== end) {
-               var val = utilGetSetValue(input);
-               input.node().setSelectionRange(val.length, val.length);
-               return;
-             }
+         var _loaded;
 
-             input.on('mouseup.combo-input', mouseup);
-           }
+         var _showing;
 
-           function mouseup(d3_event) {
-             input.on('mouseup.combo-input', null);
-             if (d3_event.button !== 0) return; // left click only
+         function load() {
+           if (!wikibase) return;
 
-             if (input.node() !== document.activeElement) return; // exit if this input is not focused
+           _button.classed('tag-reference-loading', true);
 
-             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.
+           wikibase.getDocs(what, gotDocs);
+         }
 
-             var combo = container.selectAll('.combobox');
+         function gotDocs(err, docs) {
+           _body.html('');
 
-             if (combo.empty() || combo.datum() !== input.node()) {
-               var tOrig = _tDown;
-               window.setTimeout(function () {
-                 if (tOrig !== _tDown) return; // exit if user double clicked
+           if (!docs || !docs.title) {
+             _body.append('p').attr('class', 'tag-reference-description').call(_t.append('inspector.no_documentation_key'));
 
-                 fetchComboData('', function () {
-                   show();
-                   render();
-                 });
-               }, 250);
-             } else {
-               hide();
-             }
+             done();
+             return;
            }
 
-           function focus() {
-             fetchComboData(''); // prefetch values (may warm taginfo cache)
+           if (docs.imageURL) {
+             _body.append('img').attr('class', 'tag-reference-wiki-image').attr('alt', docs.description).attr('src', docs.imageURL).on('load', function () {
+               done();
+             }).on('error', function () {
+               select(this).remove();
+               done();
+             });
+           } else {
+             done();
            }
 
-           function blur() {
-             _comboHideTimerID = window.setTimeout(hide, 75);
+           var tagReferenceDescription = _body.append('p').attr('class', 'tag-reference-description').append('span');
+
+           if (docs.description) {
+             tagReferenceDescription = tagReferenceDescription.attr('class', 'localized-text').attr('lang', docs.descriptionLocaleCode || 'und').text(docs.description);
+           } else {
+             tagReferenceDescription = tagReferenceDescription.call(_t.append('inspector.no_documentation_key'));
            }
 
-           function show() {
-             hide(); // remove any existing
+           tagReferenceDescription.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'));
 
-             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);
-           }
+           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').call(_t.append(docs.wiki.text));
+           } // Add link to info about "good changeset comments" - #2923
 
-           function hide() {
-             if (_comboHideTimerID) {
-               window.clearTimeout(_comboHideTimerID);
-               _comboHideTimerID = undefined;
-             }
 
-             container.selectAll('.combobox').remove();
-             container.on('scroll.combo-scroll', null);
+           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').call(_t.append('commit.about_changeset_comments'));
            }
+         }
 
-           function keydown(d3_event) {
-             var shown = !container.selectAll('.combobox').empty();
-             var tagName = input.node() ? input.node().tagName.toLowerCase() : '';
+         function done() {
+           _loaded = true;
 
-             switch (d3_event.keyCode) {
-               case 8: // ⌫ Backspace
+           _button.classed('tag-reference-loading', false);
 
-               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;
+           _body.classed('expanded', true).transition().duration(200).style('max-height', '200px').style('opacity', '1');
 
-               case 9:
-                 // ⇥ Tab
-                 accept();
-                 break;
+           _showing = true;
 
-               case 13:
-                 // ↩ Return
-                 d3_event.preventDefault();
-                 d3_event.stopPropagation();
-                 break;
+           _button.selectAll('svg.icon use').each(function () {
+             var iconUse = select(this);
 
-               case 38:
-                 // ↑ Up arrow
-                 if (tagName === 'textarea' && !shown) return;
-                 d3_event.preventDefault();
+             if (iconUse.attr('href') === '#iD-icon-info') {
+               iconUse.attr('href', '#iD-icon-info-filled');
+             }
+           });
+         }
 
-                 if (tagName === 'input' && !shown) {
-                   show();
-                 }
+         function hide() {
+           _body.transition().duration(200).style('max-height', '0px').style('opacity', '0').on('end', function () {
+             _body.classed('expanded', false);
+           });
 
-                 nav(-1);
-                 break;
+           _showing = false;
 
-               case 40:
-                 // ↓ Down arrow
-                 if (tagName === 'textarea' && !shown) return;
-                 d3_event.preventDefault();
+           _button.selectAll('svg.icon use').each(function () {
+             var iconUse = select(this);
 
-                 if (tagName === 'input' && !shown) {
-                   show();
-                 }
+             if (iconUse.attr('href') === '#iD-icon-info-filled') {
+               iconUse.attr('href', '#iD-icon-info');
+             }
+           });
+         }
 
-                 nav(+1);
-                 break;
+         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);
+
+           _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();
              }
+           });
+         };
+
+         tagReference.body = function (selection) {
+           var itemID = what.qid || what.key + '-' + (what.value || '');
+           _body = selection.selectAll('.tag-reference-body').data([itemID], function (d) {
+             return d;
+           });
+
+           _body.exit().remove();
+
+           _body = _body.enter().append('div').attr('class', 'tag-reference-body').style('max-height', '0').style('opacity', '0').merge(_body);
+
+           if (_showing === false) {
+             hide();
            }
+         };
 
-           function keyup(d3_event) {
-             switch (d3_event.keyCode) {
-               case 27:
-                 // ⎋ Escape
-                 cancel();
-                 break;
+         tagReference.showing = function (val) {
+           if (!arguments.length) return _showing;
+           _showing = val;
+           return tagReference;
+         };
 
-               case 13:
-                 // ↩ Return
-                 accept();
-                 break;
-             }
-           } // Called whenever the input value is changed (e.g. on typing)
+         return tagReference;
+       }
 
+       // It borrows some code from uiHelp
 
-           function change() {
-             fetchComboData(value(), function () {
-               _selected = null;
-               var val = input.property('value');
+       function uiFieldHelp(context, fieldName) {
+         var fieldHelp = {};
 
-               if (_suggestions.length) {
-                 if (input.property('selectionEnd') === val.length) {
-                   _selected = tryAutocomplete();
-                 }
+         var _inspector = select(null);
 
-                 if (!_selected) {
-                   _selected = val;
-                 }
-               }
+         var _wrap = select(null);
 
-               if (val.length) {
-                 var combo = container.selectAll('.combobox');
+         var _body = select(null);
 
-                 if (combo.empty()) {
-                   show();
-                 }
-               } else {
-                 hide();
-               }
+         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: {
+             html: _t.html('restriction.controls.distance')
+           },
+           viaField: {
+             html: _t.html('restriction.controls.via')
+           },
+           fromShadow: {
+             html: icon('#iD-turn-shadow', 'inline shadow from')
+           },
+           allowShadow: {
+             html: icon('#iD-turn-shadow', 'inline shadow allow')
+           },
+           restrictShadow: {
+             html: icon('#iD-turn-shadow', 'inline shadow restrict')
+           },
+           onlyShadow: {
+             html: icon('#iD-turn-shadow', 'inline shadow only')
+           },
+           allowTurn: {
+             html: icon('#iD-turn-yes', 'inline turn')
+           },
+           restrictTurn: {
+             html: icon('#iD-turn-no', 'inline turn')
+           },
+           onlyTurn: {
+             html: icon('#iD-turn-only', 'inline turn')
+           }
+         }; // For each section, squash all the texts into a single markdown document
 
-               render();
-             });
-           } // Called when the user presses up/down arrows to navigate the list
+         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 hhh = depth ? Array(depth + 1).join('#') + ' ' : ''; // if so, prepend with some ##'s
 
-           function nav(dir) {
-             if (_suggestions.length) {
-               // try to determine previously selected index..
-               var index = -1;
+             return all + hhh + _t.html(subkey, replacements) + '\n\n';
+           }, '');
+           return {
+             key: helpkey,
+             title: _t.html(helpkey + '.title'),
+             html: marked_1(text.trim())
+           };
+         });
 
-               for (var i = 0; i < _suggestions.length; i++) {
-                 if (_selected && _suggestions[i].value === _selected) {
-                   index = i;
-                   break;
-                 }
-               } // pick new _selected
+         function show() {
+           updatePosition();
 
+           _body.classed('hide', false).style('opacity', '0').transition().duration(200).style('opacity', '1');
+         }
 
-               index = Math.max(Math.min(index + dir, _suggestions.length - 1), 0);
-               _selected = _suggestions[index].value;
-               input.property('value', _selected);
-             }
+         function hide() {
+           _body.classed('hide', true).transition().duration(200).style('opacity', '0').on('end', function () {
+             _body.classed('hide', true);
+           });
+         }
 
-             render();
-             ensureVisible();
-           }
+         function clickHelp(index) {
+           var d = docs[index];
+           var tkeys = fieldHelpKeys[fieldName][index][1];
 
-           function ensureVisible() {
-             var combo = container.selectAll('.combobox');
-             if (combo.empty()) return;
-             var containerRect = container.node().getBoundingClientRect();
-             var comboRect = combo.node().getBoundingClientRect();
+           _body.selectAll('.field-help-nav-item').classed('active', function (d, i) {
+             return i === index;
+           });
 
-             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
+           var content = _body.selectAll('.field-help-content').html(d.html); // class the paragraphs so we can find and style them
 
 
-             var selected = combo.selectAll('.combobox-option.selected').node();
+           content.selectAll('p').attr('class', function (d, i) {
+             return tkeys[i];
+           }); // insert special content for certain help sections
 
-             if (selected) {
-               selected.scrollIntoView({
-                 behavior: 'smooth',
-                 block: 'nearest'
-               });
-             }
+           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'));
            }
+         }
 
-           function value() {
-             var value = input.property('value');
-             var start = input.property('selectionStart');
-             var end = input.property('selectionEnd');
+         fieldHelp.button = function (selection) {
+           if (_body.empty()) return;
+           var button = selection.selectAll('.field-help-button').data([0]); // enter/update
 
-             if (start && end) {
-               value = value.substring(0, start);
+           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();
+
+             if (_body.classed('hide')) {
+               show();
+             } else {
+               hide();
              }
+           });
+         };
 
-             return value;
-           }
+         function updatePosition() {
+           var wrap = _wrap.node();
 
-           function fetchComboData(v, cb) {
-             _cancelFetch = false;
+           var inspector = _inspector.node();
 
-             _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;
-               });
+           var wRect = wrap.getBoundingClientRect();
+           var iRect = inspector.getBoundingClientRect();
 
-               if (cb) {
-                 cb();
-               }
-             });
-           }
+           _body.style('top', wRect.top + inspector.scrollTop - iRect.top + 'px');
+         }
 
-           function tryAutocomplete() {
-             if (!_canAutocomplete) return;
-             var val = _caseSensitive ? value() : value().toLowerCase();
-             if (!val) return; // Don't autocomplete if user is typing a number - #4935
+         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
 
-             if (!isNaN(parseFloat(val)) && isFinite(val)) return;
-             var bestIndex = -1;
+           _inspector = context.container().select('.sidebar .entity-editor-pane .inspector-body');
+           if (_inspector.empty()) return;
+           _body = _inspector.selectAll('.field-help-body').data([0]);
 
-             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 enter = _body.enter().append('div').attr('class', 'field-help-body hide'); // initially hidden
 
-               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;
-               }
-             }
 
-             if (bestIndex !== -1) {
-               var bestVal = _suggestions[bestIndex].value;
-               input.property('value', bestVal);
-               input.node().setSelectionRange(val.length, bestVal.length);
-               return bestVal;
-             }
-           }
+           var titleEnter = enter.append('div').attr('class', 'field-help-title cf');
+           titleEnter.append('h2').attr('class', _mainLocalizer.textDirection() === 'rtl' ? 'fr' : 'fl').call(_t.append('help.field.' + fieldName + '.title'));
+           titleEnter.append('button').attr('class', 'fr close').attr('title', _t('icons.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);
+         };
 
-           function render() {
-             if (_suggestions.length < _minItems || document.activeElement !== input.node()) {
-               hide();
-               return;
-             }
+         return fieldHelp;
+       }
 
-             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 uiFieldCheck(field, context) {
+         var dispatch = dispatch$8('change');
+         var options = field.options;
+         var values = [];
+         var texts = [];
 
-             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.
+         var _tags;
+
+         var input = select(null);
+         var text = select(null);
+         var label = select(null);
+         var reverser = select(null);
+
+         var _impliedYes;
+
+         var _entityIDs = [];
+
+         var _value;
+
+         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 (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"
 
-           function accept(d3_event, d) {
-             _cancelFetch = true;
-             var thiz = input.node();
 
-             if (d) {
-               // user clicked on a suggestion
-               utilGetSetValue(input, d.value); // replace field contents
+         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
 
-               utilTriggerEvent(input, 'change');
-             } // clear (and keep) selection
+           if (field.id === 'oneway') {
+             var entity = context.entity(_entityIDs[0]);
 
+             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;
+               }
+             }
+           }
+         }
 
-             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 reverserHidden() {
+           if (!context.container().select('div.inspector-hover').empty()) return true;
+           return !(_value === 'yes' || _impliedYes && !_value);
+         }
 
+         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('').call(_t.append('inspector.check.reverser')).call(svgIcon(icon, 'inline'));
+           return selection;
+         }
 
-           function cancel() {
-             _cancelFetch = true;
-             var thiz = input.node(); // clear (and remove) selection, and replace field contents
+         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');
 
-             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();
+           if (field.type === 'onewayCheck') {
+             enter.append('button').attr('class', 'reverser' + (reverserHidden() ? ' hide' : '')).append('span').attr('class', 'reverser-span');
            }
-         };
 
-         combobox.canAutocomplete = function (val) {
-           if (!arguments.length) return _canAutocomplete;
-           _canAutocomplete = val;
-           return combobox;
-         };
+           label = label.merge(enter);
+           input = label.selectAll('input');
+           text = label.selectAll('span.value');
+           input.on('click', function (d3_event) {
+             d3_event.stopPropagation();
+             var t = {};
 
-         combobox.caseSensitive = function (val) {
-           if (!arguments.length) return _caseSensitive;
-           _caseSensitive = val;
-           return combobox;
-         };
+             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)
 
-         combobox.data = function (val) {
-           if (!arguments.length) return _data;
-           _data = val;
-           return combobox;
-         };
 
-         combobox.fetcher = function (val) {
-           if (!arguments.length) return _fetcher;
-           _fetcher = val;
-           return combobox;
-         };
+             if (t[field.key] === 'reversible' || t[field.key] === 'alternating') {
+               t[field.key] = values[0];
+             }
 
-         combobox.minItems = function (val) {
-           if (!arguments.length) return _minItems;
-           _minItems = val;
-           return combobox;
-         };
+             dispatch.call('change', this, t);
+           });
 
-         combobox.itemsMouseEnter = function (val) {
-           if (!arguments.length) return _mouseEnterHandler;
-           _mouseEnterHandler = val;
-           return combobox;
-         };
+           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);
+                 }
 
-         combobox.itemsMouseLeave = function (val) {
-           if (!arguments.length) return _mouseLeaveHandler;
-           _mouseLeaveHandler = val;
-           return combobox;
+                 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);
+             });
+           }
          };
 
-         return utilRebind(combobox, dispatch, 'on');
-       }
+         check.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return check;
+         };
 
-       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);
-       };
+         check.tags = function (tags) {
+           _tags = tags;
 
-       function uiDisclosure(context, key, expandedDefault) {
-         var dispatch = dispatch$8('toggled');
+           function isChecked(val) {
+             return val !== 'no' && val !== '' && val !== undefined && val !== null;
+           }
 
-         var _expanded;
+           function textFor(val) {
+             if (val === '') val = undefined;
+             var index = values.indexOf(val);
+             return index !== -1 ? texts[index] : '"' + val + '"';
+           }
 
-         var _label = utilFunctor('');
+           checkImpliedYes();
+           var isMixed = Array.isArray(tags[field.key]);
+           _value = !isMixed && tags[field.key] && tags[field.key].toLowerCase();
 
-         var _updatePreference = true;
+           if (field.type === 'onewayCheck' && (_value === '1' || _value === '-1')) {
+             _value = 'yes';
+           }
 
-         var _content = function _content() {};
+           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 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';
+           if (field.type === 'onewayCheck') {
+             reverser.classed('hide', reverserHidden()).call(reverserSetText);
            }
+         };
 
-           var hideToggle = selection.selectAll('.hide-toggle-' + key).data([0]); // enter
+         check.focus = function () {
+           input.node().focus();
+         };
 
-           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
+         return utilRebind(check, dispatch, 'on');
+       }
 
-           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
+       function uiFieldCombo(field, context) {
+         var dispatch = dispatch$8('change');
 
-           wrap = wrap.enter().append('div').attr('class', 'disclosure-wrap disclosure-wrap-' + key).merge(wrap).classed('hide', !_expanded);
+         var _isMulti = field.type === 'multiCombo' || field.type === 'manyCombo';
 
-           if (_expanded) {
-             wrap.call(_content);
-           }
+         var _isNetwork = field.type === 'networkCombo';
 
-           function toggle(d3_event) {
-             d3_event.preventDefault();
-             _expanded = !_expanded;
+         var _isSemi = field.type === 'semiCombo';
 
-             if (_updatePreference) {
-               corePreferences('disclosure.' + key + '.expanded', _expanded);
-             }
+         var _optarray = field.options;
 
-             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));
+         var _showTagInfoSuggestions = field.type !== 'manyCombo' && field.autoSuggestions !== false;
 
-             if (_expanded) {
-               wrap.call(_content);
-             }
+         var _allowCustomValues = field.type !== 'manyCombo' && field.customValues !== false;
 
-             dispatch.call('toggled', this, _expanded);
-           }
-         };
+         var _snake_case = field.snake_case || field.snake_case === undefined;
 
-         disclosure.label = function (val) {
-           if (!arguments.length) return _label;
-           _label = utilFunctor(val);
-           return disclosure;
-         };
+         var _combobox = uiCombobox(context, 'combo-' + field.safeid).caseSensitive(field.caseSensitive).minItems(_isMulti || _isSemi ? 1 : 2);
 
-         disclosure.expanded = function (val) {
-           if (!arguments.length) return _expanded;
-           _expanded = val;
-           return disclosure;
-         };
+         var _container = select(null);
 
-         disclosure.updatePreference = function (val) {
-           if (!arguments.length) return _updatePreference;
-           _updatePreference = val;
-           return disclosure;
-         };
+         var _inputWrap = select(null);
 
-         disclosure.content = function (val) {
-           if (!arguments.length) return _content;
-           _content = val;
-           return disclosure;
-         };
+         var _input = select(null);
 
-         return utilRebind(disclosure, dispatch, 'on');
-       }
+         var _comboData = [];
+         var _multiData = [];
+         var _entityIDs = [];
 
-       // Can be labeled and collapsible.
+         var _tags;
 
-       function uiSection(id, context) {
-         var _classes = utilFunctor('');
+         var _countryCode;
 
-         var _shouldDisplay;
+         var _staticPlaceholder; // initialize deprecated tags array
 
-         var _content;
 
-         var _disclosure;
+         var _dataDeprecated = [];
+         _mainFileFetcher.get('deprecated').then(function (d) {
+           _dataDeprecated = d;
+         })["catch"](function () {
+           /* ignore */
+         }); // ensure multiCombo field.key ends with a ':'
 
-         var _label;
+         if (_isMulti && field.key && /[^:]$/.test(field.key)) {
+           field.key += ':';
+         }
 
-         var _expandedByDefault = utilFunctor(true);
+         function snake(s) {
+           return s.replace(/\s+/g, '_').toLowerCase();
+         }
 
-         var _disclosureContent;
+         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)
 
-         var _disclosureExpanded;
 
-         var _containerSelection = select(null);
+         function tagValue(dval) {
+           dval = clean(dval || '');
 
-         var section = {
-           id: id
-         };
+           var found = _comboData.find(function (o) {
+             return o.key && clean(o.value) === dval;
+           });
 
-         section.classes = function (val) {
-           if (!arguments.length) return _classes;
-           _classes = utilFunctor(val);
-           return section;
-         };
+           if (found) return found.key;
 
-         section.label = function (val) {
-           if (!arguments.length) return _label;
-           _label = utilFunctor(val);
-           return section;
-         };
+           if (field.type === 'typeCombo' && !dval) {
+             return 'yes';
+           }
 
-         section.expandedByDefault = function (val) {
-           if (!arguments.length) return _expandedByDefault;
-           _expandedByDefault = utilFunctor(val);
-           return section;
-         };
+           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)
 
-         section.shouldDisplay = function (val) {
-           if (!arguments.length) return _shouldDisplay;
-           _shouldDisplay = utilFunctor(val);
-           return section;
-         };
 
-         section.content = function (val) {
-           if (!arguments.length) return _content;
-           _content = val;
-           return section;
-         };
+         function displayValue(tval) {
+           tval = tval || '';
 
-         section.disclosureContent = function (val) {
-           if (!arguments.length) return _disclosureContent;
-           _disclosureContent = val;
-           return section;
-         };
+           if (field.hasTextForStringId('options.' + tval)) {
+             return field.t('options.' + tval, {
+               "default": tval
+             });
+           }
 
-         section.disclosureExpanded = function (val) {
-           if (!arguments.length) return _disclosureExpanded;
-           _disclosureExpanded = val;
-           return section;
-         }; // may be called multiple times
+           if (field.type === 'typeCombo' && tval.toLowerCase() === 'yes') {
+             return '';
+           }
 
+           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}]
+         //
 
-         section.render = function (selection) {
-           _containerSelection = selection.selectAll('.section-' + id).data([0]);
 
-           var sectionEnter = _containerSelection.enter().append('div').attr('class', 'section section-' + id + ' ' + (_classes && _classes() || ''));
+         function objectDifference(a, b) {
+           return a.filter(function (d1) {
+             return !b.some(function (d2) {
+               return !d2.isMixed && d1.value === d2.value;
+             });
+           });
+         }
 
-           _containerSelection = sectionEnter.merge(_containerSelection);
+         function initCombo(selection, attachTo) {
+           if (!_allowCustomValues) {
+             selection.attr('readonly', 'readonly');
+           }
 
-           _containerSelection.call(renderContent);
-         };
+           if (_showTagInfoSuggestions && services.taginfo) {
+             selection.call(_combobox.fetcher(setTaginfoValues), attachTo);
+             setTaginfoValues('', setPlaceholder);
+           } else {
+             selection.call(_combobox, attachTo);
+             setStaticValues(setPlaceholder);
+           }
+         }
 
-         section.reRender = function () {
-           _containerSelection.call(renderContent);
-         };
+         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'
+             };
+           });
 
-         section.selection = function () {
-           return _containerSelection;
-         };
+           _combobox.data(objectDifference(_comboData, _multiData));
 
-         section.disclosure = function () {
-           return _disclosure;
-         }; // may be called multiple times
+           if (callback) callback(_comboData);
+         }
 
+         function setTaginfoValues(q, callback) {
+           var fn = _isMulti ? 'multikeys' : 'values';
+           var query = (_isMulti ? field.key : '') + q;
+           var hasCountryPrefix = _isNetwork && _countryCode && _countryCode.indexOf(q.toLowerCase()) === 0;
 
-         function renderContent(selection) {
-           if (_shouldDisplay) {
-             var shouldDisplay = _shouldDisplay();
+           if (hasCountryPrefix) {
+             query = _countryCode + ':';
+           }
 
-             selection.classed('hide', !shouldDisplay);
+           var params = {
+             debounce: q !== '',
+             key: field.key,
+             query: query
+           };
 
-             if (!shouldDisplay) {
-               selection.html('');
-               return;
-             }
+           if (_entityIDs.length) {
+             params.geometry = context.graph().geometry(_entityIDs[0]);
            }
 
-           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);
-             }
+           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
 
-             if (_disclosureExpanded !== undefined) {
-               _disclosure.expanded(_disclosureExpanded);
 
-               _disclosureExpanded = undefined;
+               return !d.count || d.count > 10;
+             });
+             var deprecatedValues = osmEntity.deprecatedTagValuesByKey(_dataDeprecated)[field.key];
+
+             if (deprecatedValues) {
+               // don't suggest deprecated tag values
+               data = data.filter(function (d) {
+                 return deprecatedValues.indexOf(d.value) === -1;
+               });
              }
 
-             selection.call(_disclosure);
-             return;
-           }
+             if (hasCountryPrefix) {
+               data = data.filter(function (d) {
+                 return d.value.toLowerCase().indexOf(_countryCode + ':') === 0;
+               });
+             } // hide the caret if there are no suggestions
 
-           if (_content) {
-             selection.call(_content);
-           }
+
+             _container.classed('empty-combobox', data.length === 0);
+
+             _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);
+           });
          }
 
-         return section;
-       }
+         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(', ');
+           }
 
-       // {
-       //   key: 'string',     // required
-       //   value: 'string'    // optional
-       // }
-       //   -or-
-       // {
-       //   qid: 'string'      // brand wikidata  (e.g. 'Q37158')
-       // }
-       //
+           if (!/(…|\.\.\.)$/.test(_staticPlaceholder)) {
+             _staticPlaceholder += '…';
+           }
 
-       function uiTagReference(what) {
-         var wikibase = what.qid ? services.wikidata : services.osmWikibase;
-         var tagReference = {};
+           var ph;
 
-         var _button = select(null);
+           if (!_isMulti && !_isSemi && _tags && Array.isArray(_tags[field.key])) {
+             ph = _t('inspector.multiple_values');
+           } else {
+             ph = _staticPlaceholder;
+           }
 
-         var _body = select(null);
+           _container.selectAll('input').attr('placeholder', ph);
+         }
 
-         var _loaded;
+         function change() {
+           var t = {};
+           var val;
 
-         var _showing;
+           if (_isMulti || _isSemi) {
+             val = tagValue(utilGetSetValue(_input).replace(/,/g, ';')) || '';
 
-         function load() {
-           if (!wikibase) return;
+             _container.classed('active', false);
 
-           _button.classed('tag-reference-loading', true);
+             utilGetSetValue(_input, '');
+             var vals = val.split(';').filter(Boolean);
+             if (!vals.length) return;
 
-           wikibase.getDocs(what, gotDocs);
-         }
+             if (_isMulti) {
+               utilArrayUniq(vals).forEach(function (v) {
+                 var key = (field.key || '') + v;
 
-         function gotDocs(err, docs) {
-           _body.html('');
+                 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;
+                 }
 
-           if (!docs || !docs.title) {
-             _body.append('p').attr('class', 'tag-reference-description').html(_t.html('inspector.no_documentation_key'));
+                 key = context.cleanTagKey(key);
+                 field.keys.push(key);
+                 t[key] = 'yes';
+               });
+             } else if (_isSemi) {
+               var arr = _multiData.map(function (d) {
+                 return d.key;
+               });
 
-             done();
-             return;
-           }
+               arr = arr.concat(vals);
+               t[field.key] = context.cleanTagValue(utilArrayUniq(arr).filter(Boolean).join(';'));
+             }
 
-           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();
-             });
+             window.setTimeout(function () {
+               _input.node().focus();
+             }, 10);
            } else {
-             done();
+             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;
            }
 
-           _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'));
+           dispatch.call('change', this, t);
+         }
 
-           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
+         function removeMultikey(d3_event, d) {
+           d3_event.preventDefault();
+           d3_event.stopPropagation();
+           var t = {};
 
+           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);
 
-           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'));
+             arr = utilArrayUniq(arr);
+             t[field.key] = arr.length ? arr.join(';') : undefined;
            }
-         }
-
-         function done() {
-           _loaded = true;
-
-           _button.classed('tag-reference-loading', false);
 
-           _body.classed('expanded', true).transition().duration(200).style('max-height', '200px').style('opacity', '1');
+           dispatch.call('change', this, t);
+         }
 
-           _showing = true;
+         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);
 
-           _button.selectAll('svg.icon use').each(function () {
-             var iconUse = select(this);
+           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
 
-             if (iconUse.attr('href') === '#iD-icon-info') {
-               iconUse.attr('href', '#iD-icon-info-filled');
+             if (field.key === 'destination' || field.key === 'via') {
+               listClass += ' full-line-chips';
              }
-           });
-         }
 
-         function hide() {
-           _body.transition().duration(200).style('max-height', '0px').style('opacity', '0').on('end', function () {
-             _body.classed('expanded', false);
-           });
+             _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]);
+           }
 
-           _showing = false;
+           _input = _input.enter().append('input').attr('type', 'text').attr('id', field.domId).call(utilNoAuto).call(initCombo, selection).merge(_input);
 
-           _button.selectAll('svg.icon use').each(function () {
-             var iconUse = select(this);
+           if (_isNetwork) {
+             var extent = combinedEntityExtent();
+             var countryCode = extent && iso1A2Code(extent.center());
+             _countryCode = countryCode && countryCode.toLowerCase();
+           }
 
-             if (iconUse.attr('href') === '#iD-icon-info-filled') {
-               iconUse.attr('href', '#iD-icon-info');
-             }
-           });
-         }
+           _input.on('change', change).on('blur', change);
 
-         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);
+           _input.on('keydown.field', function (d3_event) {
+             switch (d3_event.keyCode) {
+               case 13:
+                 // ↩ Return
+                 _input.node().blur(); // blurring also enters the value
 
-           _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();
+                 d3_event.stopPropagation();
+                 break;
              }
            });
-         };
-
-         tagReference.body = function (selection) {
-           var itemID = what.qid || what.key + '-' + (what.value || '');
-           _body = selection.selectAll('.tag-reference-body').data([itemID], function (d) {
-             return d;
-           });
 
-           _body.exit().remove();
+           if (_isMulti || _isSemi) {
+             _combobox.on('accept', function () {
+               _input.node().blur();
 
-           _body = _body.enter().append('div').attr('class', 'tag-reference-body').style('max-height', '0').style('opacity', '0').merge(_body);
+               _input.node().focus();
+             });
 
-           if (_showing === false) {
-             hide();
+             _input.on('focus', function () {
+               _container.classed('active', true);
+             });
            }
-         };
+         }
 
-         tagReference.showing = function (val) {
-           if (!arguments.length) return _showing;
-           _showing = val;
-           return tagReference;
-         };
+         combo.tags = function (tags) {
+           _tags = tags;
 
-         return tagReference;
-       }
+           if (_isMulti || _isSemi) {
+             _multiData = [];
+             var maxLength;
 
-       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'
-         }];
+             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;
 
-         var _tagView = corePreferences('raw-tag-editor-view') || 'list'; // 'list, 'text'
+                 _multiData.push({
+                   key: k,
+                   value: displayValue(suffix),
+                   isMixed: Array.isArray(v)
+                 });
+               }
 
+               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 _readOnlyTags = []; // the keys in the order we want them to display
+                 maxLength = context.maxCharsForTagKey() - utilUnicodeCharsCount(field.key);
+               } else {
+                 maxLength = context.maxCharsForTagKey();
+               }
+             } else if (_isSemi) {
+               var allValues = [];
+               var commonValues;
 
-         var _orderedKeys = [];
-         var _showBlank = false;
-         var _pendingChange = null;
+               if (Array.isArray(tags[field.key])) {
+                 tags[field.key].forEach(function (tagVal) {
+                   var thisVals = utilArrayUniq((tagVal || '').split(';')).filter(Boolean);
+                   allValues = allValues.concat(thisVals);
 
-         var _state;
+                   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 _presets;
+               _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 _tags;
+               maxLength = context.maxCharsForTagValue() - currLength;
 
-         var _entityIDs;
+               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 _didInteract = false;
 
-         function interacted() {
-           _didInteract = true;
-         }
+             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 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
+             var available = objectDifference(_comboData, _multiData);
 
-           var all = Object.keys(_tags).sort();
-           var missingKeys = utilArrayDifference(all, _orderedKeys);
+             _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
 
-           for (var i in missingKeys) {
-             _orderedKeys.push(missingKeys[i]);
-           } // assemble row data
 
+             var hideAdd = !_allowCustomValues && !available.length || maxLength <= 0;
 
-           var rowData = _orderedKeys.map(function (key, i) {
-             return {
-               index: i,
-               key: key,
-               value: _tags[key]
-             };
-           }); // append blank row last, if necessary
+             _container.selectAll('.chiplist .input-wrap').style('display', hideAdd ? 'none' : null); // Render chips
 
 
-           if (!rowData.length || _showBlank) {
-             _showBlank = false;
-             rowData.push({
-               index: rowData.length,
-               key: '',
-               value: ''
+             var chips = _container.selectAll('.chip').data(_multiData);
+
+             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;
              });
-           } // View Options
 
+             if (allowDragAndDrop) {
+               registerDragAndDrop(chips);
+             }
 
-           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;
+             chips.select('span').text(function (d) {
+               return d.value;
              });
-             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
+             chips.select('a').attr('href', '#').on('click', removeMultikey).attr('class', 'remove').text('×');
+           } else {
+             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);
+               }
+             });
+           }
+         };
 
-           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 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;
 
-           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 (field.key === 'destination' || field.key === 'via') {
+               // meaning tags are full width
+               _container.selectAll('.chip').style('transform', function (d2, index2) {
+                 var node = select(this).node();
 
-           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 (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;
+                   }
 
-           addRowEnter.append('div').attr('class', 'space-buttons'); // preserve space
-           // Tag list items
+                   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 items = list.selectAll('.tag-row').data(rowData, function (d) {
-             return d.key;
-           });
-           items.exit().each(unbind).remove(); // Enter
+                   return 'translateY(100%)';
+                 }
 
-           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
+                 return null;
+               });
+             } else {
+               _container.selectAll('.chip').each(function (d2, index2) {
+                 var node = select(this).node(); // check the cursor is in the bounding box
 
-           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
+                 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();
 
-             var value = row.select('input.value'); // propagate bound data
+                 if (index === index2) {
+                   return 'translate(' + x + 'px, ' + y + 'px)';
+                 } // only translate tags in the same row
 
-             if (_entityIDs && taginfo && _state !== 'hover') {
-               bindTypeahead(key, value);
-             }
 
-             var referenceOptions = {
-               key: d.key
-             };
+                 if (node.offsetTop === targetIndexOffsetTop) {
+                   if (index2 < index && index2 >= targetIndex) {
+                     return 'translateX(' + draggedTagWidth + 'px)';
+                   } else if (index2 > index && index2 <= targetIndex) {
+                     return 'translateX(-' + draggedTagWidth + 'px)';
+                   }
+                 }
 
-             if (typeof d.value === 'string') {
-               referenceOptions.value = d.value;
+                 return null;
+               });
+             }
+           }).on('end', function () {
+             if (!select(this).classed('dragging')) {
+               return;
              }
 
-             var reference = uiTagReference(referenceOptions);
+             var index = selection.nodes().indexOf(this);
+             select(this).classed('dragging', false);
 
-             if (_state === 'hover') {
-               reference.showing(false);
-             }
+             _container.selectAll('.chip').style('transform', 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
-         }
+             if (typeof targetIndex === 'number') {
+               var element = _multiData[index];
+
+               _multiData.splice(index, 1);
+
+               _multiData.splice(targetIndex, 0, element);
+
+               var t = {};
+
+               if (_multiData.length) {
+                 t[field.key] = _multiData.map(function (element) {
+                   return element.key;
+                 }).join(';');
+               } else {
+                 t[field.key] = undefined;
+               }
 
-         function isReadOnly(d) {
-           for (var i = 0; i < _readOnlyTags.length; i++) {
-             if (d.key.match(_readOnlyTags[i]) !== null) {
-               return true;
+               dispatch.call('change', this, t);
              }
-           }
 
-           return false;
+             dragOrigin = undefined;
+             targetIndex = undefined;
+           }));
          }
 
-         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');
-         }
+         combo.focus = function () {
+           _input.node().focus();
+         };
 
-         function stringify(s) {
-           return JSON.stringify(s).slice(1, -1); // without leading/trailing "
-         }
+         combo.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return combo;
+         };
 
-         function unstringify(s) {
-           var leading = '';
-           var trailing = '';
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }
 
-           if (s.length < 1 || s.charAt(0) !== '"') {
-             leading = '"';
-           }
+         return utilRebind(combo, dispatch, 'on');
+       }
 
-           if (s.length < 2 || s.charAt(s.length - 1) !== '"' || s.charAt(s.length - 1) === '"' && s.charAt(s.length - 2) === '\\') {
-             trailing = '"';
-           }
+       // based on https://github.com/bestiejs/punycode.js/blob/master/punycode.js
+       var global$2 = global$1o;
+       var uncurryThis$1 = functionUncurryThis;
 
-           return JSON.parse(leading + s + trailing);
-         }
+       var maxInt = 2147483647; // aka. 0x7FFFFFFF or 2^31-1
+       var base = 36;
+       var tMin = 1;
+       var tMax = 26;
+       var skew = 38;
+       var damp = 700;
+       var initialBias = 72;
+       var initialN = 128; // 0x80
+       var delimiter = '-'; // '\x2D'
+       var regexNonASCII = /[^\0-\u007E]/; // non-ASCII chars
+       var regexSeparators = /[.\u3002\uFF0E\uFF61]/g; // RFC 3490 separators
+       var OVERFLOW_ERROR = 'Overflow: input needs wider integers to process';
+       var baseMinusTMin = base - tMin;
 
-         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');
+       var RangeError$1 = global$2.RangeError;
+       var exec$1 = uncurryThis$1(regexSeparators.exec);
+       var floor$1 = Math.floor;
+       var fromCharCode = String.fromCharCode;
+       var charCodeAt = uncurryThis$1(''.charCodeAt);
+       var join$1 = uncurryThis$1([].join);
+       var push$1 = uncurryThis$1([].push);
+       var replace$1 = uncurryThis$1(''.replace);
+       var split$1 = uncurryThis$1(''.split);
+       var toLowerCase$1 = uncurryThis$1(''.toLowerCase);
 
-           if (_state !== 'hover' && str.length) {
-             return str + '\n';
+       /**
+        * Creates an array containing the numeric code points of each Unicode
+        * character in the string. While JavaScript uses UCS-2 internally,
+        * this function will convert a pair of surrogate halves (each of which
+        * UCS-2 exposes as separate characters) into a single code point,
+        * matching UTF-16.
+        */
+       var ucs2decode = function (string) {
+         var output = [];
+         var counter = 0;
+         var length = string.length;
+         while (counter < length) {
+           var value = charCodeAt(string, counter++);
+           if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
+             // It's a high surrogate, and there is a next character.
+             var extra = charCodeAt(string, counter++);
+             if ((extra & 0xFC00) == 0xDC00) { // Low surrogate.
+               push$1(output, ((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
+             } else {
+               // It's an unmatched surrogate; only append this code unit, in case the
+               // next code unit is the high surrogate of a surrogate pair.
+               push$1(output, value);
+               counter--;
+             }
+           } else {
+             push$1(output, value);
            }
-
-           return str;
          }
+         return output;
+       };
 
-         function textChanged() {
-           var newText = this.value.trim();
-           var newTags = {};
-           newText.split('\n').forEach(function (row) {
-             var m = row.match(/^\s*([^=]+)=(.*)$/);
+       /**
+        * Converts a digit/integer into a basic code point.
+        */
+       var digitToBasic = function (digit) {
+         //  0..25 map to ASCII a..z or A..Z
+         // 26..35 map to ASCII 0..9
+         return digit + 22 + 75 * (digit < 26);
+       };
 
-             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
+       /**
+        * Bias adaptation function as per section 3.4 of RFC 3492.
+        * https://tools.ietf.org/html/rfc3492#section-3.4
+        */
+       var adapt = function (delta, numPoints, firstTime) {
+         var k = 0;
+         delta = firstTime ? floor$1(delta / damp) : delta >> 1;
+         delta += floor$1(delta / numPoints);
+         while (delta > baseMinusTMin * tMax >> 1) {
+           delta = floor$1(delta / baseMinusTMin);
+           k += base;
+         }
+         return floor$1(k + (baseMinusTMin + 1) * delta / (delta + skew));
+       };
 
-             if (change.newVal === '*' && typeof change.oldVal !== 'string') return;
+       /**
+        * Converts a string of Unicode symbols (e.g. a domain name label) to a
+        * Punycode string of ASCII-only symbols.
+        */
+       var encode = function (input) {
+         var output = [];
 
-             if (change.type === '-') {
-               _pendingChange[change.key] = undefined;
-             } else if (change.type === '+') {
-               _pendingChange[change.key] = change.newVal || '';
-             }
-           });
+         // Convert the input in UCS-2 to an array of Unicode code points.
+         input = ucs2decode(input);
 
-           if (Object.keys(_pendingChange).length === 0) {
-             _pendingChange = null;
-             return;
-           }
+         // Cache the length.
+         var inputLength = input.length;
 
-           scheduleChange();
-         }
+         // Initialize the state.
+         var n = initialN;
+         var delta = 0;
+         var bias = initialBias;
+         var i, currentValue;
 
-         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();
+         // Handle the basic code points.
+         for (i = 0; i < input.length; i++) {
+           currentValue = input[i];
+           if (currentValue < 0x80) {
+             push$1(output, fromCharCode(currentValue));
            }
          }
 
-         function bindTypeahead(key, value) {
-           if (isReadOnly(key.datum())) return;
-
-           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 basicLength = output.length; // number of basic code points.
+         var handledCPCount = basicLength; // number of code points that have been handled;
 
-               var data = _tags[keyString].filter(Boolean).map(function (tagValue) {
-                 return {
-                   value: tagValue,
-                   title: tagValue
-                 };
-               });
+         // Finish the basic string with a delimiter unless it's empty.
+         if (basicLength) {
+           push$1(output, delimiter);
+         }
 
-               callback(data);
-             }));
-             return;
+         // Main encoding loop:
+         while (handledCPCount < inputLength) {
+           // All non-basic code points < n have been handled already. Find the next larger one:
+           var m = maxInt;
+           for (i = 0; i < input.length; i++) {
+             currentValue = input[i];
+             if (currentValue >= n && currentValue < m) {
+               m = currentValue;
+             }
            }
 
-           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));
-             });
-           }));
+           // 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$1((maxInt - delta) / handledCPCountPlusOne)) {
+             throw RangeError$1(OVERFLOW_ERROR);
+           }
 
-           function sort(value, data) {
-             var sameletter = [];
-             var other = [];
+           delta += (m - n) * handledCPCountPlusOne;
+           n = m;
 
-             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]);
-               }
+           for (i = 0; i < input.length; i++) {
+             currentValue = input[i];
+             if (currentValue < n && ++delta > maxInt) {
+               throw RangeError$1(OVERFLOW_ERROR);
              }
+             if (currentValue == n) {
+               // Represent delta as a generalized variable-length integer.
+               var q = delta;
+               var k = base;
+               while (true) {
+                 var t = k <= bias ? tMin : (k >= bias + tMax ? tMax : k - bias);
+                 if (q < t) break;
+                 var qMinusT = q - t;
+                 var baseMinusT = base - t;
+                 push$1(output, fromCharCode(digitToBasic(t + qMinusT % baseMinusT)));
+                 q = floor$1(qMinusT / baseMinusT);
+                 k += base;
+               }
 
-             return sameletter.concat(other);
+               push$1(output, fromCharCode(digitToBasic(q)));
+               bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength);
+               delta = 0;
+               handledCPCount++;
+             }
            }
+
+           delta++;
+           n++;
          }
+         return join$1(output, '');
+       };
 
-         function unbind() {
-           var row = select(this);
-           row.selectAll('input.key').call(uiCombobox.off, context);
-           row.selectAll('input.value').call(uiCombobox.off, context);
+       var stringPunycodeToAscii = function (input) {
+         var encoded = [];
+         var labels = split$1(replace$1(toLowerCase$1(input), regexSeparators, '\u002E'), '.');
+         var i, label;
+         for (i = 0; i < labels.length; i++) {
+           label = labels[i];
+           push$1(encoded, exec$1(regexNonASCII, label) ? 'xn--' + encode(label) : label);
          }
+         return join$1(encoded, '.');
+       };
 
-         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
+       // TODO: in core-js@4, move /modules/ dependencies to public entries for better optimization by tools like `preset-env`
 
-           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
+       var $ = _export;
+       var DESCRIPTORS = descriptors;
+       var USE_NATIVE_URL = nativeUrl;
+       var global$1 = global$1o;
+       var bind$2 = functionBindContext;
+       var uncurryThis = functionUncurryThis;
+       var defineProperties = objectDefineProperties.f;
+       var redefine = redefine$h.exports;
+       var anInstance = anInstance$7;
+       var hasOwn = hasOwnProperty_1;
+       var assign$1 = objectAssign;
+       var arrayFrom = arrayFrom$1;
+       var arraySlice = arraySliceSimple;
+       var codeAt = stringMultibyte.codeAt;
+       var toASCII = stringPunycodeToAscii;
+       var $toString = toString$k;
+       var setToStringTag = setToStringTag$a;
+       var validateArgumentsLength = validateArgumentsLength$4;
+       var URLSearchParamsModule = web_urlSearchParams;
+       var InternalStateModule = internalState;
+
+       var setInternalState = InternalStateModule.set;
+       var getInternalURLState = InternalStateModule.getterFor('URL');
+       var URLSearchParams$1 = URLSearchParamsModule.URLSearchParams;
+       var getInternalSearchParamsState = URLSearchParamsModule.getState;
+
+       var NativeURL = global$1.URL;
+       var TypeError$1 = global$1.TypeError;
+       var parseInt$1 = global$1.parseInt;
+       var floor = Math.floor;
+       var pow = Math.pow;
+       var charAt = uncurryThis(''.charAt);
+       var exec = uncurryThis(/./.exec);
+       var join = uncurryThis([].join);
+       var numberToString = uncurryThis(1.0.toString);
+       var pop = uncurryThis([].pop);
+       var push = uncurryThis([].push);
+       var replace = uncurryThis(''.replace);
+       var shift = uncurryThis([].shift);
+       var split = uncurryThis(''.split);
+       var stringSlice = uncurryThis(''.slice);
+       var toLowerCase = uncurryThis(''.toLowerCase);
+       var unshift = uncurryThis([].unshift);
 
-           if (isReadOnly({
-             key: kNew
-           })) {
-             this.value = kOld;
-             return;
-           }
+       var INVALID_AUTHORITY = 'Invalid authority';
+       var INVALID_SCHEME = 'Invalid scheme';
+       var INVALID_HOST = 'Invalid host';
+       var INVALID_PORT = 'Invalid port';
 
-           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 ALPHA = /[a-z]/i;
+       // eslint-disable-next-line regexp/no-obscure-range -- safe
+       var ALPHANUMERIC = /[\d+-.a-z]/i;
+       var DIGIT = /\d/;
+       var HEX_START = /^0x/i;
+       var OCT = /^[0-7]+$/;
+       var DEC = /^\d+$/;
+       var HEX = /^[\da-f]+$/i;
+       /* eslint-disable regexp/no-control-character -- 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-\u0020]+|[\u0000-\u0020]+$/g;
+       var TAB_AND_NEW_LINE = /[\t\n\r]/g;
+       /* eslint-enable regexp/no-control-character -- safe */
+       var EOF;
 
-             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;
+       // https://url.spec.whatwg.org/#ipv4-number-parser
+       var parseIPv4 = function (input) {
+         var parts = split(input, '.');
+         var partsLength, numbers, index, part, radix, number, ipv4;
+         if (parts.length && parts[parts.length - 1] == '') {
+           parts.length--;
+         }
+         partsLength = parts.length;
+         if (partsLength > 4) return input;
+         numbers = [];
+         for (index = 0; index < partsLength; index++) {
+           part = parts[index];
+           if (part == '') return input;
+           radix = 10;
+           if (part.length > 1 && charAt(part, 0) == '0') {
+             radix = exec(HEX_START, part) ? 16 : 8;
+             part = stringSlice(part, radix == 8 ? 1 : 2);
            }
-
-           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;
+           if (part === '') {
+             number = 0;
+           } else {
+             if (!exec(radix == 10 ? DEC : radix == 8 ? OCT : HEX, part)) return input;
+             number = parseInt$1(part, radix);
            }
-
-           _pendingChange[kNew] = vNew; // update the ordered key index so this row doesn't change position
-
-           var existingKeyIndex = _orderedKeys.indexOf(kOld);
-
-           if (existingKeyIndex !== -1) _orderedKeys[existingKeyIndex] = kNew;
-           d.key = kNew; // update datum to avoid exit/enter on tag update
-
-           d.value = vNew;
-           this.value = kNew;
-           utilGetSetValue(inputVal, vNew);
-           scheduleChange();
+           push(numbers, number);
+         }
+         for (index = 0; index < partsLength; index++) {
+           number = numbers[index];
+           if (index == partsLength - 1) {
+             if (number >= pow(256, 5 - partsLength)) return null;
+           } else if (number > 255) return null;
+         }
+         ipv4 = pop(numbers);
+         for (index = 0; index < numbers.length; index++) {
+           ipv4 += numbers[index] * pow(256, 3 - index);
          }
+         return ipv4;
+       };
 
-         function valueChange(d3_event, d) {
-           if (isReadOnly(d)) return; // exit if this is a multiselection and no value was entered
+       // https://url.spec.whatwg.org/#concept-ipv6-parser
+       // 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 compress = null;
+         var pointer = 0;
+         var value, length, numbersSeen, ipv4Piece, number, swaps, swap;
 
-           if (typeof d.value !== 'string' && !this.value) return; // exit if we are currently about to delete this row anyway - #6366
+         var chr = function () {
+           return charAt(input, pointer);
+         };
 
-           if (_pendingChange && _pendingChange.hasOwnProperty(d.key) && _pendingChange[d.key] === undefined) return;
-           _pendingChange = _pendingChange || {};
-           _pendingChange[d.key] = context.cleanTagValue(this.value);
-           scheduleChange();
+         if (chr() == ':') {
+           if (charAt(input, 1) != ':') return;
+           pointer += 2;
+           pieceIndex++;
+           compress = pieceIndex;
          }
+         while (chr()) {
+           if (pieceIndex == 8) return;
+           if (chr() == ':') {
+             if (compress !== null) return;
+             pointer++;
+             pieceIndex++;
+             compress = pieceIndex;
+             continue;
+           }
+           value = length = 0;
+           while (length < 4 && exec(HEX, chr())) {
+             value = value * 16 + parseInt$1(chr(), 16);
+             pointer++;
+             length++;
+           }
+           if (chr() == '.') {
+             if (length == 0) return;
+             pointer -= length;
+             if (pieceIndex > 6) return;
+             numbersSeen = 0;
+             while (chr()) {
+               ipv4Piece = null;
+               if (numbersSeen > 0) {
+                 if (chr() == '.' && numbersSeen < 4) pointer++;
+                 else return;
+               }
+               if (!exec(DIGIT, chr())) return;
+               while (exec(DIGIT, chr())) {
+                 number = parseInt$1(chr(), 10);
+                 if (ipv4Piece === null) ipv4Piece = number;
+                 else if (ipv4Piece == 0) return;
+                 else ipv4Piece = ipv4Piece * 10 + number;
+                 if (ipv4Piece > 255) return;
+                 pointer++;
+               }
+               address[pieceIndex] = address[pieceIndex] * 256 + ipv4Piece;
+               numbersSeen++;
+               if (numbersSeen == 2 || numbersSeen == 4) pieceIndex++;
+             }
+             if (numbersSeen != 4) return;
+             break;
+           } else if (chr() == ':') {
+             pointer++;
+             if (!chr()) return;
+           } else if (chr()) return;
+           address[pieceIndex++] = value;
+         }
+         if (compress !== null) {
+           swaps = pieceIndex - compress;
+           pieceIndex = 7;
+           while (pieceIndex != 0 && swaps > 0) {
+             swap = address[pieceIndex];
+             address[pieceIndex--] = address[compress + swaps - 1];
+             address[compress + --swaps] = swap;
+           }
+         } else if (pieceIndex != 8) return;
+         return address;
+       };
 
-         function removeTag(d3_event, d) {
-           if (isReadOnly(d)) return;
-
-           if (d.key === '') {
-             // removing the blank row
-             _showBlank = false;
-             section.reRender();
+       var findLongestZeroSequence = function (ipv6) {
+         var maxIndex = null;
+         var maxLength = 1;
+         var currStart = null;
+         var currLength = 0;
+         var index = 0;
+         for (; index < 8; index++) {
+           if (ipv6[index] !== 0) {
+             if (currLength > maxLength) {
+               maxIndex = currStart;
+               maxLength = currLength;
+             }
+             currStart = null;
+             currLength = 0;
            } 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();
+             if (currStart === null) currStart = index;
+             ++currLength;
            }
          }
-
-         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);
+         if (currLength > maxLength) {
+           maxIndex = currStart;
+           maxLength = currLength;
          }
+         return maxIndex;
+       };
 
-         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
+       // https://url.spec.whatwg.org/#host-serializing
+       var serializeHost = function (host) {
+         var result, index, compress, ignore0;
+         // ipv4
+         if (typeof host == 'number') {
+           result = [];
+           for (index = 0; index < 4; index++) {
+             unshift(result, host % 256);
+             host = floor(host / 256);
+           } return join(result, '.');
+         // ipv6
+         } else if (typeof host == 'object') {
+           result = '';
+           compress = findLongestZeroSequence(host);
+           for (index = 0; index < 8; index++) {
+             if (ignore0 && host[index] === 0) continue;
+             if (ignore0) ignore0 = false;
+             if (compress === index) {
+               result += index ? ':' : '::';
+               ignore0 = true;
+             } else {
+               result += numberToString(host[index], 16);
+               if (index < 7) result += ':';
+             }
+           }
+           return '[' + result + ']';
+         } return host;
+       };
 
-           window.setTimeout(function () {
-             if (!_pendingChange) return;
-             dispatch.call('change', this, entityIDs, _pendingChange);
-             _pendingChange = null;
-           }, 10);
-         }
+       var C0ControlPercentEncodeSet = {};
+       var fragmentPercentEncodeSet = assign$1({}, C0ControlPercentEncodeSet, {
+         ' ': 1, '"': 1, '<': 1, '>': 1, '`': 1
+       });
+       var pathPercentEncodeSet = assign$1({}, fragmentPercentEncodeSet, {
+         '#': 1, '?': 1, '{': 1, '}': 1
+       });
+       var userinfoPercentEncodeSet = assign$1({}, pathPercentEncodeSet, {
+         '/': 1, ':': 1, ';': 1, '=': 1, '@': 1, '[': 1, '\\': 1, ']': 1, '^': 1, '|': 1
+       });
 
-         section.state = function (val) {
-           if (!arguments.length) return _state;
+       var percentEncode = function (chr, set) {
+         var code = codeAt(chr, 0);
+         return code > 0x20 && code < 0x7F && !hasOwn(set, chr) ? chr : encodeURIComponent(chr);
+       };
+
+       // https://url.spec.whatwg.org/#special-scheme
+       var specialSchemes = {
+         ftp: 21,
+         file: null,
+         http: 80,
+         https: 443,
+         ws: 80,
+         wss: 443
+       };
+
+       // https://url.spec.whatwg.org/#windows-drive-letter
+       var isWindowsDriveLetter = function (string, normalized) {
+         var second;
+         return string.length == 2 && exec(ALPHA, charAt(string, 0))
+           && ((second = charAt(string, 1)) == ':' || (!normalized && second == '|'));
+       };
+
+       // https://url.spec.whatwg.org/#start-with-a-windows-drive-letter
+       var startsWithWindowsDriveLetter = function (string) {
+         var third;
+         return string.length > 1 && isWindowsDriveLetter(stringSlice(string, 0, 2)) && (
+           string.length == 2 ||
+           ((third = charAt(string, 2)) === '/' || third === '\\' || third === '?' || third === '#')
+         );
+       };
+
+       // https://url.spec.whatwg.org/#single-dot-path-segment
+       var isSingleDot = function (segment) {
+         return segment === '.' || toLowerCase(segment) === '%2e';
+       };
 
-           if (_state !== val) {
-             _orderedKeys = [];
-             _state = val;
-           }
+       // https://url.spec.whatwg.org/#double-dot-path-segment
+       var isDoubleDot = function (segment) {
+         segment = toLowerCase(segment);
+         return segment === '..' || segment === '%2e.' || segment === '.%2e' || segment === '%2e%2e';
+       };
 
-           return section;
-         };
+       // States:
+       var SCHEME_START = {};
+       var SCHEME = {};
+       var NO_SCHEME = {};
+       var SPECIAL_RELATIVE_OR_AUTHORITY = {};
+       var PATH_OR_AUTHORITY = {};
+       var RELATIVE = {};
+       var RELATIVE_SLASH = {};
+       var SPECIAL_AUTHORITY_SLASHES = {};
+       var SPECIAL_AUTHORITY_IGNORE_SLASHES = {};
+       var AUTHORITY = {};
+       var HOST = {};
+       var HOSTNAME = {};
+       var PORT = {};
+       var FILE = {};
+       var FILE_SLASH = {};
+       var FILE_HOST = {};
+       var PATH_START = {};
+       var PATH = {};
+       var CANNOT_BE_A_BASE_URL_PATH = {};
+       var QUERY = {};
+       var FRAGMENT = {};
 
-         section.presets = function (val) {
-           if (!arguments.length) return _presets;
-           _presets = val;
+       var URLState = function (url, isBase, base) {
+         var urlString = $toString(url);
+         var baseState, failure, searchParams;
+         if (isBase) {
+           failure = this.parse(urlString);
+           if (failure) throw TypeError$1(failure);
+           this.searchParams = null;
+         } else {
+           if (base !== undefined) baseState = new URLState(base, true);
+           failure = this.parse(urlString, null, baseState);
+           if (failure) throw TypeError$1(failure);
+           searchParams = getInternalSearchParamsState(new URLSearchParams$1());
+           searchParams.bindURL(this);
+           this.searchParams = searchParams;
+         }
+       };
 
-           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);
+       URLState.prototype = {
+         type: 'URL',
+         // https://url.spec.whatwg.org/#url-parsing
+         // eslint-disable-next-line max-statements -- TODO
+         parse: function (input, stateOverride, base) {
+           var url = this;
+           var state = stateOverride || SCHEME_START;
+           var pointer = 0;
+           var buffer = '';
+           var seenAt = false;
+           var seenBracket = false;
+           var seenPasswordToken = false;
+           var codePoints, chr, bufferCodePoints, failure;
+
+           input = $toString(input);
+
+           if (!stateOverride) {
+             url.scheme = '';
+             url.username = '';
+             url.password = '';
+             url.host = null;
+             url.port = null;
+             url.path = [];
+             url.query = null;
+             url.fragment = null;
+             url.cannotBeABaseURL = false;
+             input = replace(input, LEADING_AND_TRAILING_C0_CONTROL_OR_SPACE, '');
            }
 
-           return section;
-         };
-
-         section.tags = function (val) {
-           if (!arguments.length) return _tags;
-           _tags = val;
-           return section;
-         };
+           input = replace(input, TAB_AND_NEW_LINE, '');
 
-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
+           codePoints = arrayFrom(input);
 
-           if (!_entityIDs || !val || !utilArrayIdentical(_entityIDs, val)) {
-             _entityIDs = val;
-             _orderedKeys = [];
-           }
+           while (pointer <= codePoints.length) {
+             chr = codePoints[pointer];
+             switch (state) {
+               case SCHEME_START:
+                 if (chr && exec(ALPHA, chr)) {
+                   buffer += toLowerCase(chr);
+                   state = SCHEME;
+                 } else if (!stateOverride) {
+                   state = NO_SCHEME;
+                   continue;
+                 } else return INVALID_SCHEME;
+                 break;
 
-           return section;
-         }; // pass an array of regular expressions to test against the tag key
+               case SCHEME:
+                 if (chr && (exec(ALPHANUMERIC, chr) || chr == '+' || chr == '-' || chr == '.')) {
+                   buffer += toLowerCase(chr);
+                 } else if (chr == ':') {
+                   if (stateOverride && (
+                     (url.isSpecial() != hasOwn(specialSchemes, buffer)) ||
+                     (buffer == 'file' && (url.includesCredentials() || url.port !== null)) ||
+                     (url.scheme == 'file' && !url.host)
+                   )) return;
+                   url.scheme = buffer;
+                   if (stateOverride) {
+                     if (url.isSpecial() && specialSchemes[url.scheme] == url.port) url.port = null;
+                     return;
+                   }
+                   buffer = '';
+                   if (url.scheme == 'file') {
+                     state = FILE;
+                   } else if (url.isSpecial() && base && base.scheme == url.scheme) {
+                     state = SPECIAL_RELATIVE_OR_AUTHORITY;
+                   } else if (url.isSpecial()) {
+                     state = SPECIAL_AUTHORITY_SLASHES;
+                   } else if (codePoints[pointer + 1] == '/') {
+                     state = PATH_OR_AUTHORITY;
+                     pointer++;
+                   } else {
+                     url.cannotBeABaseURL = true;
+                     push(url.path, '');
+                     state = CANNOT_BE_A_BASE_URL_PATH;
+                   }
+                 } else if (!stateOverride) {
+                   buffer = '';
+                   state = NO_SCHEME;
+                   pointer = 0;
+                   continue;
+                 } else return INVALID_SCHEME;
+                 break;
 
+               case NO_SCHEME:
+                 if (!base || (base.cannotBeABaseURL && chr != '#')) return INVALID_SCHEME;
+                 if (base.cannotBeABaseURL && chr == '#') {
+                   url.scheme = base.scheme;
+                   url.path = arraySlice(base.path);
+                   url.query = base.query;
+                   url.fragment = '';
+                   url.cannotBeABaseURL = true;
+                   state = FRAGMENT;
+                   break;
+                 }
+                 state = base.scheme == 'file' ? FILE : RELATIVE;
+                 continue;
 
-         section.readOnlyTags = function (val) {
-           if (!arguments.length) return _readOnlyTags;
-           _readOnlyTags = val;
-           return section;
-         };
+               case SPECIAL_RELATIVE_OR_AUTHORITY:
+                 if (chr == '/' && codePoints[pointer + 1] == '/') {
+                   state = SPECIAL_AUTHORITY_IGNORE_SLASHES;
+                   pointer++;
+                 } else {
+                   state = RELATIVE;
+                   continue;
+                 } break;
 
-         return utilRebind(section, dispatch, 'on');
-       }
+               case PATH_OR_AUTHORITY:
+                 if (chr == '/') {
+                   state = AUTHORITY;
+                   break;
+                 } else {
+                   state = PATH;
+                   continue;
+                 }
 
-       function uiDataEditor(context) {
-         var dataHeader = uiDataHeader();
-         var rawTagEditor = uiSectionRawTagEditor('custom-data-tag-editor', context).expandedByDefault(true).readOnlyTags([/./]);
+               case RELATIVE:
+                 url.scheme = base.scheme;
+                 if (chr == EOF) {
+                   url.username = base.username;
+                   url.password = base.password;
+                   url.host = base.host;
+                   url.port = base.port;
+                   url.path = arraySlice(base.path);
+                   url.query = base.query;
+                 } else if (chr == '/' || (chr == '\\' && url.isSpecial())) {
+                   state = RELATIVE_SLASH;
+                 } else if (chr == '?') {
+                   url.username = base.username;
+                   url.password = base.password;
+                   url.host = base.host;
+                   url.port = base.port;
+                   url.path = arraySlice(base.path);
+                   url.query = '';
+                   state = QUERY;
+                 } else if (chr == '#') {
+                   url.username = base.username;
+                   url.password = base.password;
+                   url.host = base.host;
+                   url.port = base.port;
+                   url.path = arraySlice(base.path);
+                   url.query = base.query;
+                   url.fragment = '';
+                   state = FRAGMENT;
+                 } else {
+                   url.username = base.username;
+                   url.password = base.password;
+                   url.host = base.host;
+                   url.port = base.port;
+                   url.path = arraySlice(base.path);
+                   url.path.length--;
+                   state = PATH;
+                   continue;
+                 } break;
 
-         var _datum;
+               case RELATIVE_SLASH:
+                 if (url.isSpecial() && (chr == '/' || chr == '\\')) {
+                   state = SPECIAL_AUTHORITY_IGNORE_SLASHES;
+                 } else if (chr == '/') {
+                   state = AUTHORITY;
+                 } else {
+                   url.username = base.username;
+                   url.password = base.password;
+                   url.host = base.host;
+                   url.port = base.port;
+                   state = PATH;
+                   continue;
+                 } break;
 
-         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
+               case SPECIAL_AUTHORITY_SLASHES:
+                 state = SPECIAL_AUTHORITY_IGNORE_SLASHES;
+                 if (chr != '/' || charAt(buffer, pointer + 1) != '/') continue;
+                 pointer++;
+                 break;
 
-           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
+               case SPECIAL_AUTHORITY_IGNORE_SLASHES:
+                 if (chr != '/' && chr != '\\') {
+                   state = AUTHORITY;
+                   continue;
+                 } break;
+
+               case AUTHORITY:
+                 if (chr == '@') {
+                   if (seenAt) buffer = '%40' + buffer;
+                   seenAt = true;
+                   bufferCodePoints = arrayFrom(buffer);
+                   for (var i = 0; i < bufferCodePoints.length; i++) {
+                     var codePoint = bufferCodePoints[i];
+                     if (codePoint == ':' && !seenPasswordToken) {
+                       seenPasswordToken = true;
+                       continue;
+                     }
+                     var encodedCodePoints = percentEncode(codePoint, userinfoPercentEncodeSet);
+                     if (seenPasswordToken) url.password += encodedCodePoints;
+                     else url.username += encodedCodePoints;
+                   }
+                   buffer = '';
+                 } else if (
+                   chr == EOF || chr == '/' || chr == '?' || chr == '#' ||
+                   (chr == '\\' && url.isSpecial())
+                 ) {
+                   if (seenAt && buffer == '') return INVALID_AUTHORITY;
+                   pointer -= arrayFrom(buffer).length + 1;
+                   buffer = '';
+                   state = HOST;
+                 } else buffer += chr;
+                 break;
 
-           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);
-         }
+               case HOST:
+               case HOSTNAME:
+                 if (stateOverride && url.scheme == 'file') {
+                   state = FILE_HOST;
+                   continue;
+                 } else if (chr == ':' && !seenBracket) {
+                   if (buffer == '') return INVALID_HOST;
+                   failure = url.parseHost(buffer);
+                   if (failure) return failure;
+                   buffer = '';
+                   state = PORT;
+                   if (stateOverride == HOSTNAME) return;
+                 } else if (
+                   chr == EOF || chr == '/' || chr == '?' || chr == '#' ||
+                   (chr == '\\' && url.isSpecial())
+                 ) {
+                   if (url.isSpecial() && buffer == '') return INVALID_HOST;
+                   if (stateOverride && buffer == '' && (url.includesCredentials() || url.port !== null)) return;
+                   failure = url.parseHost(buffer);
+                   if (failure) return failure;
+                   buffer = '';
+                   state = PATH_START;
+                   if (stateOverride) return;
+                   continue;
+                 } else {
+                   if (chr == '[') seenBracket = true;
+                   else if (chr == ']') seenBracket = false;
+                   buffer += chr;
+                 } break;
+
+               case PORT:
+                 if (exec(DIGIT, chr)) {
+                   buffer += chr;
+                 } else if (
+                   chr == EOF || chr == '/' || chr == '?' || chr == '#' ||
+                   (chr == '\\' && url.isSpecial()) ||
+                   stateOverride
+                 ) {
+                   if (buffer != '') {
+                     var port = parseInt$1(buffer, 10);
+                     if (port > 0xFFFF) return INVALID_PORT;
+                     url.port = (url.isSpecial() && port === specialSchemes[url.scheme]) ? null : port;
+                     buffer = '';
+                   }
+                   if (stateOverride) return;
+                   state = PATH_START;
+                   continue;
+                 } else return INVALID_PORT;
+                 break;
 
-         dataEditor.datum = function (val) {
-           if (!arguments.length) return _datum;
-           _datum = val;
-           return this;
-         };
+               case FILE:
+                 url.scheme = 'file';
+                 if (chr == '/' || chr == '\\') state = FILE_SLASH;
+                 else if (base && base.scheme == 'file') {
+                   if (chr == EOF) {
+                     url.host = base.host;
+                     url.path = arraySlice(base.path);
+                     url.query = base.query;
+                   } else if (chr == '?') {
+                     url.host = base.host;
+                     url.path = arraySlice(base.path);
+                     url.query = '';
+                     state = QUERY;
+                   } else if (chr == '#') {
+                     url.host = base.host;
+                     url.path = arraySlice(base.path);
+                     url.query = base.query;
+                     url.fragment = '';
+                     state = FRAGMENT;
+                   } else {
+                     if (!startsWithWindowsDriveLetter(join(arraySlice(codePoints, pointer), ''))) {
+                       url.host = base.host;
+                       url.path = arraySlice(base.path);
+                       url.shortenPath();
+                     }
+                     state = PATH;
+                     continue;
+                   }
+                 } else {
+                   state = PATH;
+                   continue;
+                 } break;
 
-         return dataEditor;
-       }
+               case FILE_SLASH:
+                 if (chr == '/' || chr == '\\') {
+                   state = FILE_HOST;
+                   break;
+                 }
+                 if (base && base.scheme == 'file' && !startsWithWindowsDriveLetter(join(arraySlice(codePoints, pointer), ''))) {
+                   if (isWindowsDriveLetter(base.path[0], true)) push(url.path, base.path[0]);
+                   else url.host = base.host;
+                 }
+                 state = PATH;
+                 continue;
 
-       var pair_1 = pair;
+               case FILE_HOST:
+                 if (chr == EOF || chr == '/' || chr == '\\' || chr == '?' || chr == '#') {
+                   if (!stateOverride && isWindowsDriveLetter(buffer)) {
+                     state = PATH;
+                   } else if (buffer == '') {
+                     url.host = '';
+                     if (stateOverride) return;
+                     state = PATH_START;
+                   } else {
+                     failure = url.parseHost(buffer);
+                     if (failure) return failure;
+                     if (url.host == 'localhost') url.host = '';
+                     if (stateOverride) return;
+                     buffer = '';
+                     state = PATH_START;
+                   } continue;
+                 } else buffer += chr;
+                 break;
 
-       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
+               case PATH_START:
+                 if (url.isSpecial()) {
+                   state = PATH;
+                   if (chr != '/' && chr != '\\') continue;
+                 } else if (!stateOverride && chr == '?') {
+                   url.query = '';
+                   state = QUERY;
+                 } else if (!stateOverride && chr == '#') {
+                   url.fragment = '';
+                   state = FRAGMENT;
+                 } else if (chr != EOF) {
+                   state = PATH;
+                   if (chr != '/') continue;
+                 } break;
 
-         var matched = m[0]; // extract dimension.. m[1] = leading, m[5] = trailing
+               case PATH:
+                 if (
+                   chr == EOF || chr == '/' ||
+                   (chr == '\\' && url.isSpecial()) ||
+                   (!stateOverride && (chr == '?' || chr == '#'))
+                 ) {
+                   if (isDoubleDot(buffer)) {
+                     url.shortenPath();
+                     if (chr != '/' && !(chr == '\\' && url.isSpecial())) {
+                       push(url.path, '');
+                     }
+                   } else if (isSingleDot(buffer)) {
+                     if (chr != '/' && !(chr == '\\' && url.isSpecial())) {
+                       push(url.path, '');
+                     }
+                   } else {
+                     if (url.scheme == 'file' && !url.path.length && isWindowsDriveLetter(buffer)) {
+                       if (url.host) url.host = '';
+                       buffer = charAt(buffer, 0) + ':'; // normalize windows drive letter
+                     }
+                     push(url.path, buffer);
+                   }
+                   buffer = '';
+                   if (url.scheme == 'file' && (chr == EOF || chr == '?' || chr == '#')) {
+                     while (url.path.length > 1 && url.path[0] === '') {
+                       shift(url.path);
+                     }
+                   }
+                   if (chr == '?') {
+                     url.query = '';
+                     state = QUERY;
+                   } else if (chr == '#') {
+                     url.fragment = '';
+                     state = FRAGMENT;
+                   }
+                 } else {
+                   buffer += percentEncode(chr, pathPercentEncodeSet);
+                 } break;
 
-         var dim;
+               case CANNOT_BE_A_BASE_URL_PATH:
+                 if (chr == '?') {
+                   url.query = '';
+                   state = QUERY;
+                 } else if (chr == '#') {
+                   url.fragment = '';
+                   state = FRAGMENT;
+                 } else if (chr != EOF) {
+                   url.path[0] += percentEncode(chr, C0ControlPercentEncodeSet);
+                 } break;
 
-         if (m[1] && m[5]) {
-           // if matched both..
-           dim = m[1]; // keep leading
+               case QUERY:
+                 if (!stateOverride && chr == '#') {
+                   url.fragment = '';
+                   state = FRAGMENT;
+                 } else if (chr != EOF) {
+                   if (chr == "'" && url.isSpecial()) url.query += '%27';
+                   else if (chr == '#') url.query += '%23';
+                   else url.query += percentEncode(chr, C0ControlPercentEncodeSet);
+                 } break;
+
+               case FRAGMENT:
+                 if (chr != EOF) url.fragment += percentEncode(chr, fragmentPercentEncodeSet);
+                 break;
+             }
 
-           matched = matched.slice(0, -1); // remove trailing dimension from match
-         } else {
-           dim = m[1] || m[5];
-         } // if unrecognized dimension
+             pointer++;
+           }
+         },
+         // https://url.spec.whatwg.org/#host-parsing
+         parseHost: function (input) {
+           var result, codePoints, index;
+           if (charAt(input, 0) == '[') {
+             if (charAt(input, input.length - 1) != ']') return INVALID_HOST;
+             result = parseIPv6(stringSlice(input, 1, -1));
+             if (!result) return INVALID_HOST;
+             this.host = result;
+           // opaque host
+           } else if (!this.isSpecial()) {
+             if (exec(FORBIDDEN_HOST_CODE_POINT_EXCLUDING_PERCENT, input)) return INVALID_HOST;
+             result = '';
+             codePoints = arrayFrom(input);
+             for (index = 0; index < codePoints.length; index++) {
+               result += percentEncode(codePoints[index], C0ControlPercentEncodeSet);
+             }
+             this.host = result;
+           } else {
+             input = toASCII(input);
+             if (exec(FORBIDDEN_HOST_CODE_POINT, input)) return INVALID_HOST;
+             result = parseIPv4(input);
+             if (result === null) return INVALID_HOST;
+             this.host = result;
+           }
+         },
+         // https://url.spec.whatwg.org/#cannot-have-a-username-password-port
+         cannotHaveUsernamePasswordPort: function () {
+           return !this.host || this.cannotBeABaseURL || this.scheme == 'file';
+         },
+         // https://url.spec.whatwg.org/#include-credentials
+         includesCredentials: function () {
+           return this.username != '' || this.password != '';
+         },
+         // https://url.spec.whatwg.org/#is-special
+         isSpecial: function () {
+           return hasOwn(specialSchemes, this.scheme);
+         },
+         // https://url.spec.whatwg.org/#shorten-a-urls-path
+         shortenPath: function () {
+           var path = this.path;
+           var pathSize = path.length;
+           if (pathSize && (this.scheme != 'file' || pathSize != 1 || !isWindowsDriveLetter(path[0], true))) {
+             path.length--;
+           }
+         },
+         // https://url.spec.whatwg.org/#concept-url-serializer
+         serialize: function () {
+           var url = this;
+           var scheme = url.scheme;
+           var username = url.username;
+           var password = url.password;
+           var host = url.host;
+           var port = url.port;
+           var path = url.path;
+           var query = url.query;
+           var fragment = url.fragment;
+           var output = scheme + ':';
+           if (host !== null) {
+             output += '//';
+             if (url.includesCredentials()) {
+               output += username + (password ? ':' + password : '') + '@';
+             }
+             output += serializeHost(host);
+             if (port !== null) output += ':' + port;
+           } else if (scheme == 'file') output += '//';
+           output += url.cannotBeABaseURL ? path[0] : path.length ? '/' + join(path, '/') : '';
+           if (query !== null) output += '?' + query;
+           if (fragment !== null) output += '#' + fragment;
+           return output;
+         },
+         // https://url.spec.whatwg.org/#dom-url-href
+         setHref: function (href) {
+           var failure = this.parse(href);
+           if (failure) throw TypeError$1(failure);
+           this.searchParams.update();
+         },
+         // https://url.spec.whatwg.org/#dom-url-origin
+         getOrigin: function () {
+           var scheme = this.scheme;
+           var port = this.port;
+           if (scheme == 'blob') try {
+             return new URLConstructor(scheme.path[0]).origin;
+           } catch (error) {
+             return 'null';
+           }
+           if (scheme == 'file' || !this.isSpecial()) return 'null';
+           return scheme + '://' + serializeHost(this.host) + (port !== null ? ':' + port : '');
+         },
+         // https://url.spec.whatwg.org/#dom-url-protocol
+         getProtocol: function () {
+           return this.scheme + ':';
+         },
+         setProtocol: function (protocol) {
+           this.parse($toString(protocol) + ':', SCHEME_START);
+         },
+         // https://url.spec.whatwg.org/#dom-url-username
+         getUsername: function () {
+           return this.username;
+         },
+         setUsername: function (username) {
+           var codePoints = arrayFrom($toString(username));
+           if (this.cannotHaveUsernamePasswordPort()) return;
+           this.username = '';
+           for (var i = 0; i < codePoints.length; i++) {
+             this.username += percentEncode(codePoints[i], userinfoPercentEncodeSet);
+           }
+         },
+         // https://url.spec.whatwg.org/#dom-url-password
+         getPassword: function () {
+           return this.password;
+         },
+         setPassword: function (password) {
+           var codePoints = arrayFrom($toString(password));
+           if (this.cannotHaveUsernamePasswordPort()) return;
+           this.password = '';
+           for (var i = 0; i < codePoints.length; i++) {
+             this.password += percentEncode(codePoints[i], userinfoPercentEncodeSet);
+           }
+         },
+         // https://url.spec.whatwg.org/#dom-url-host
+         getHost: function () {
+           var host = this.host;
+           var port = this.port;
+           return host === null ? ''
+             : port === null ? serializeHost(host)
+             : serializeHost(host) + ':' + port;
+         },
+         setHost: function (host) {
+           if (this.cannotBeABaseURL) return;
+           this.parse(host, HOST);
+         },
+         // https://url.spec.whatwg.org/#dom-url-hostname
+         getHostname: function () {
+           var host = this.host;
+           return host === null ? '' : serializeHost(host);
+         },
+         setHostname: function (hostname) {
+           if (this.cannotBeABaseURL) return;
+           this.parse(hostname, HOSTNAME);
+         },
+         // https://url.spec.whatwg.org/#dom-url-port
+         getPort: function () {
+           var port = this.port;
+           return port === null ? '' : $toString(port);
+         },
+         setPort: function (port) {
+           if (this.cannotHaveUsernamePasswordPort()) return;
+           port = $toString(port);
+           if (port == '') this.port = null;
+           else this.parse(port, PORT);
+         },
+         // https://url.spec.whatwg.org/#dom-url-pathname
+         getPathname: function () {
+           var path = this.path;
+           return this.cannotBeABaseURL ? path[0] : path.length ? '/' + join(path, '/') : '';
+         },
+         setPathname: function (pathname) {
+           if (this.cannotBeABaseURL) return;
+           this.path = [];
+           this.parse(pathname, PATH_START);
+         },
+         // https://url.spec.whatwg.org/#dom-url-search
+         getSearch: function () {
+           var query = this.query;
+           return query ? '?' + query : '';
+         },
+         setSearch: function (search) {
+           search = $toString(search);
+           if (search == '') {
+             this.query = null;
+           } else {
+             if ('?' == charAt(search, 0)) search = stringSlice(search, 1);
+             this.query = '';
+             this.parse(search, QUERY);
+           }
+           this.searchParams.update();
+         },
+         // https://url.spec.whatwg.org/#dom-url-searchparams
+         getSearchParams: function () {
+           return this.searchParams.facade;
+         },
+         // https://url.spec.whatwg.org/#dom-url-hash
+         getHash: function () {
+           var fragment = this.fragment;
+           return fragment ? '#' + fragment : '';
+         },
+         setHash: function (hash) {
+           hash = $toString(hash);
+           if (hash == '') {
+             this.fragment = null;
+             return;
+           }
+           if ('#' == charAt(hash, 0)) hash = stringSlice(hash, 1);
+           this.fragment = '';
+           this.parse(hash, FRAGMENT);
+         },
+         update: function () {
+           this.query = this.searchParams.serialize() || null;
+         }
+       };
 
+       // `URL` constructor
+       // https://url.spec.whatwg.org/#url-class
+       var URLConstructor = function URL(url /* , base */) {
+         var that = anInstance(this, URLPrototype);
+         var base = validateArgumentsLength(arguments.length, 1) > 1 ? arguments[1] : undefined;
+         var state = setInternalState(that, new URLState(url, false, base));
+         if (!DESCRIPTORS) {
+           that.href = state.serialize();
+           that.origin = state.getOrigin();
+           that.protocol = state.getProtocol();
+           that.username = state.getUsername();
+           that.password = state.getPassword();
+           that.host = state.getHost();
+           that.hostname = state.getHostname();
+           that.port = state.getPort();
+           that.pathname = state.getPathname();
+           that.search = state.getSearch();
+           that.searchParams = state.getSearchParams();
+           that.hash = state.getHash();
+         }
+       };
 
-         if (dim && dims.indexOf(dim) === -1) return null; // extract DMS
+       var URLPrototype = URLConstructor.prototype;
 
-         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;
+       var accessorDescriptor = function (getter, setter) {
          return {
-           val: (Math.abs(deg) + min + sec) * sign,
-           dim: dim,
-           matched: matched,
-           remain: input.slice(matched.length)
+           get: function () {
+             return getInternalURLState(this)[getter]();
+           },
+           set: setter && function (value) {
+             return getInternalURLState(this)[setter](value);
+           },
+           configurable: true,
+           enumerable: true
          };
-       }
-
-       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;
-
-         if (one.dim) {
-           return swapdim(one.val, two.val, one.dim);
-         } else {
-           return [one.val, two.val];
-         }
-       }
+       };
 
-       function swapdim(a, b, dim) {
-         if (dim === 'N' || dim === 'S') return [a, b];
-         if (dim === 'W' || dim === 'E') return [b, a];
+       if (DESCRIPTORS) {
+         defineProperties(URLPrototype, {
+           // `URL.prototype.href` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-href
+           href: accessorDescriptor('serialize', 'setHref'),
+           // `URL.prototype.origin` getter
+           // https://url.spec.whatwg.org/#dom-url-origin
+           origin: accessorDescriptor('getOrigin'),
+           // `URL.prototype.protocol` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-protocol
+           protocol: accessorDescriptor('getProtocol', 'setProtocol'),
+           // `URL.prototype.username` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-username
+           username: accessorDescriptor('getUsername', 'setUsername'),
+           // `URL.prototype.password` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-password
+           password: accessorDescriptor('getPassword', 'setPassword'),
+           // `URL.prototype.host` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-host
+           host: accessorDescriptor('getHost', 'setHost'),
+           // `URL.prototype.hostname` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-hostname
+           hostname: accessorDescriptor('getHostname', 'setHostname'),
+           // `URL.prototype.port` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-port
+           port: accessorDescriptor('getPort', 'setPort'),
+           // `URL.prototype.pathname` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-pathname
+           pathname: accessorDescriptor('getPathname', 'setPathname'),
+           // `URL.prototype.search` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-search
+           search: accessorDescriptor('getSearch', 'setSearch'),
+           // `URL.prototype.searchParams` getter
+           // https://url.spec.whatwg.org/#dom-url-searchparams
+           searchParams: accessorDescriptor('getSearchParams'),
+           // `URL.prototype.hash` accessors pair
+           // https://url.spec.whatwg.org/#dom-url-hash
+           hash: accessorDescriptor('getHash', 'setHash')
+         });
        }
 
-       function uiFeatureList(context) {
-         var _geocodeResults;
+       // `URL.prototype.toJSON` method
+       // https://url.spec.whatwg.org/#dom-url-tojson
+       redefine(URLPrototype, 'toJSON', function toJSON() {
+         return getInternalURLState(this).serialize();
+       }, { enumerable: true });
 
-         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);
+       // `URL.prototype.toString` method
+       // https://url.spec.whatwg.org/#URL-stringification-behavior
+       redefine(URLPrototype, 'toString', function toString() {
+         return getInternalURLState(this).serialize();
+       }, { enumerable: true });
 
-           function focusSearch(d3_event) {
-             var mode = context.mode() && context.mode().id;
-             if (mode !== 'browse') return;
-             d3_event.preventDefault();
-             search.node().focus();
-           }
+       if (NativeURL) {
+         var nativeCreateObjectURL = NativeURL.createObjectURL;
+         var nativeRevokeObjectURL = NativeURL.revokeObjectURL;
+         // `URL.createObjectURL` method
+         // https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL
+         if (nativeCreateObjectURL) redefine(URLConstructor, 'createObjectURL', bind$2(nativeCreateObjectURL, NativeURL));
+         // `URL.revokeObjectURL` method
+         // https://developer.mozilla.org/en-US/docs/Web/API/URL/revokeObjectURL
+         if (nativeRevokeObjectURL) redefine(URLConstructor, 'revokeObjectURL', bind$2(nativeRevokeObjectURL, NativeURL));
+       }
 
-           function keydown(d3_event) {
-             if (d3_event.keyCode === 27) {
-               // escape
-               search.node().blur();
-             }
-           }
+       setToStringTag(URLConstructor, 'URL');
 
-           function keypress(d3_event) {
-             var q = search.property('value'),
-                 items = list.selectAll('.feature-list-item');
+       $({ global: true, forced: !USE_NATIVE_URL, sham: !DESCRIPTORS }, {
+         URL: URLConstructor
+       });
 
-             if (d3_event.keyCode === 13 && // ↩ Return
-             q.length && items.size()) {
-               click(d3_event, items.datum());
-             }
-           }
+       function uiFieldText(field, context) {
+         var dispatch = dispatch$8('change');
+         var input = select(null);
+         var outlinkButton = select(null);
+         var wrap = select(null);
+         var _entityIDs = [];
 
-           function inputevent() {
-             _geocodeResults = undefined;
-             drawList();
-           }
+         var _tags;
 
-           function clearSearch() {
-             search.property('value', '');
-             drawList();
-           }
+         var _phoneFormats = {};
 
-           function mapDrawn(e) {
-             if (e.full) {
-               drawList();
-             }
-           }
+         if (field.type === 'tel') {
+           _mainFileFetcher.get('phone_formats').then(function (d) {
+             _phoneFormats = d;
+             updatePhonePlaceholder();
+           })["catch"](function () {
+             /* ignore */
+           });
+         }
 
-           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*)$/);
+         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
 
-             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
+             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
 
+             var which = field.id; // 'brand', 'network', 'operator', 'flag'
 
-             var idMatch = !locationMatch && q.match(/(?:^|\W)(node|way|relation|[nwr])\W?0*([1-9]\d*)(?:\W|$)/i);
+             return isSuggestion && !!entity.tags[which] && !!entity.tags[which + ':wikidata'];
+           });
 
-             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
-               });
-             }
+           field.locked(isLocked);
+         }
 
-             var allEntities = graph.entities;
-             var localResults = [];
+         function i(selection) {
+           calcLocked();
+           var isLocked = field.locked();
+           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());
 
-             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 (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;
+             }).attr('title', function (d) {
+               var which = d > 0 ? 'increment' : 'decrement';
+               return _t("inspector.".concat(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();
                });
-               if (localResults.length > 100) break;
-             }
-
-             localResults = localResults.sort(function byDistance(a, b) {
-               return a.distance - b.distance;
+               input.node().value = vals.join(';');
+               change()();
              });
-             result = result.concat(localResults);
-
-             (_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
-                 };
-
-                 if (d.osm_type === 'way') {
-                   // for ways, add some fake closed nodes
-                   attrs.nodes = ['a', 'a']; // so that geometry area is possible
-                 }
+           } 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);
 
-                 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 (domainResults.length >= 2 && domainResults[1]) {
+                 var domain = domainResults[1];
+                 return _t('icons.view_on', {
+                   domain: domain
                  });
                }
-             });
 
-             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 '';
+             }).on('click', function (d3_event) {
+               d3_event.preventDefault();
+               var value = validIdentifierValueForLink();
 
-             return result;
+               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);
+           } else if (field.key.split(':').includes('colour')) {
+             input.attr('type', 'text');
+             updateColourPreview();
            }
+         }
 
-           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'));
+         function isColourValid(colour) {
+           if (!colour.match(/^(#([0-9a-fA-F]{3}){1,2}|\w+)$/)) {
+             // OSM only supports hex or named colors
+             return false;
+           } else if (!CSS.supports('color', colour) || ['unset', 'inherit', 'initial', 'revert'].includes(colour)) {
+             // see https://stackoverflow.com/a/68217760/1627467
+             return false;
+           }
 
-             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'));
-             }
+           return true;
+         }
 
-             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 updateColourPreview() {
+           wrap.selectAll('.colour-preview').remove();
+           var colour = utilGetSetValue(input);
+           if (!isColourValid(colour) && colour !== '') return;
+           var colourSelector = wrap.selectAll('.colour-selector').data([0]);
+           outlinkButton = wrap.selectAll('.colour-preview').data([colour]);
+           colourSelector.enter().append('input').attr('type', 'color').attr('class', 'form-field-button colour-selector').attr('value', colour).on('input', debounce(function (d3_event) {
+             d3_event.preventDefault();
+             var colour = this.value;
+             if (!isColourValid(colour)) return;
+             utilGetSetValue(input, this.value);
+             change()();
+             updateColourPreview();
+           }, 100));
+           outlinkButton = outlinkButton.enter().append('div').attr('class', 'form-field-button colour-preview').append('div').style('background-color', function (d) {
+             return d;
+           }).attr('class', 'colour-box');
 
-           function mouseover(d3_event, d) {
-             if (d.id === -1) return;
-             utilHighlightEntities([d.id], true, context);
+           if (colour === '') {
+             outlinkButton = outlinkButton.call(svgIcon('#iD-icon-edit'));
            }
 
-           function mouseout(d3_event, d) {
-             if (d.id === -1) return;
-             utilHighlightEntities([d.id], false, context);
-           }
+           outlinkButton.on('click', function () {
+             return wrap.select('.colour-selector').node().click();
+           }).merge(outlinkButton);
+         }
 
-           function click(d3_event, d) {
-             d3_event.preventDefault();
+         function updatePhonePlaceholder() {
+           if (input.empty() || !Object.keys(_phoneFormats).length) return;
+           var extent = combinedEntityExtent();
+           var countryCode = extent && iso1A2Code(extent.center());
 
-             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);
+           var format = countryCode && _phoneFormats[countryCode.toLowerCase()];
+
+           if (format) input.attr('placeholder', format);
+         }
+
+         function validIdentifierValueForLink() {
+           var value = utilGetSetValue(input).trim();
+
+           if (field.type === 'url' && value) {
+             try {
+               return new URL(value).href;
+             } catch (e) {
+               return null;
              }
            }
 
-           function geocoderSearch() {
-             services.geocoder.search(search.property('value'), function (err, resp) {
-               _geocodeResults = resp || [];
-               drawList();
-             });
+           if (field.type === 'identifier' && field.pattern) {
+             return value && value.match(new RegExp(field.pattern))[0];
            }
-         }
 
-         return featureList;
-       }
+           return null;
+         } // clamp number to min/max
 
-       var getOwnPropertyDescriptor$1 = objectGetOwnPropertyDescriptor.f;
 
+         function clamped(num) {
+           if (field.minValue !== undefined) {
+             num = Math.max(num, field.minValue);
+           }
 
+           if (field.maxValue !== undefined) {
+             num = Math.min(num, field.maxValue);
+           }
 
+           return num;
+         }
 
+         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;
 
-       // eslint-disable-next-line es/no-string-prototype-startswith -- safe
-       var $startsWith = ''.startsWith;
-       var min$1 = Math.min;
+             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(';');
+               }
 
-       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$1(String.prototype, 'startsWith');
-         return descriptor && !descriptor.writable;
-       }();
+               utilGetSetValue(input, val);
+             }
 
-       // `String.prototype.startsWith` method
-       // https://tc39.es/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$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;
+             t[field.key] = val || undefined;
+             dispatch.call('change', this, t, onInput);
+           };
          }
-       });
 
-       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');
-
-         var _expanded = preference === null ? true : preference === 'true';
-
-         var _entityIDs = [];
-         var _issues = [];
+         i.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return i;
+         };
 
-         var _activeIssueID;
+         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 (field.key.split(':').includes('colour')) updateColourPreview();
 
-         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 (outlinkButton && !outlinkButton.empty()) {
+             var disabled = !validIdentifierValueForLink();
+             outlinkButton.classed('disabled', disabled);
+           }
+         };
 
-         function reloadIssues() {
-           _issues = context.validator().getSharedEntityIssues(_entityIDs, {
-             includeDisabledRules: true
-           });
-         }
+         i.focus = function () {
+           var node = input.node();
+           if (node) node.focus();
+         };
 
-         function makeActiveIssue(issueID) {
-           _activeIssueID = issueID;
-           section.selection().selectAll('.issue-container').classed('active', function (d) {
-             return d.id === _activeIssueID;
-           });
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
          }
 
-         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
+         return utilRebind(i, dispatch, 'on');
+       }
 
-           containers.exit().remove(); // Enter
+       function uiFieldAccess(field, context) {
+         var dispatch = dispatch$8('change');
+         var items = select(null);
 
-           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
+         var _tags;
 
-             var extent = d.extent(context.graph());
+         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
 
-             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'));
+           var enter = items.enter().append('li').attr('class', function (d) {
+             return 'labeled-input preset-access-' + d;
            });
-           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
-
-             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
-
-             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);
-               });
-             }
+           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);
            });
-           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'));
-             }
+           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
 
-           containers = containers.merge(containersEnter).classed('active', function (d) {
-             return d.id === _activeIssueID;
-           });
-           containers.selectAll('.issue-message').html(function (d) {
-             return d.message(context);
-           }); // fixes
+           items = items.merge(enter);
+           wrap.selectAll('.preset-input-access').on('change', change).on('blur', change);
+         }
 
-           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)
+         function change(d3_event, d) {
+           var tag = {};
+           var value = context.cleanTagValue(utilGetSetValue(select(this))); // don't override multiple values with blank string
 
-             if (d.issue.dateLastRanFix && new Date() - d.issue.dateLastRanFix < 1000) return;
-             d.issue.dateLastRanFix = new Date(); // remove hover-highlighting
+           if (!value && typeof _tags[d] !== 'string') return;
+           tag[d] = value || undefined;
+           dispatch.call('change', this, tag);
+         }
 
-             utilHighlightEntities(d.issue.entityIds.concat(d.entityIds), false, context);
-             new Promise(function (resolve, reject) {
-               d.onClick(context, resolve, reject);
+         access.options = function (type) {
+           var options = ['no', 'permissive', 'private', 'permit', 'destination', 'customers', 'unknown'];
 
-               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 (type !== 'access') {
+             options.unshift('yes');
+             options.push('designated');
 
-             if (iconName.startsWith('maki')) {
-               iconName += '-15';
+             if (type === 'bicycle') {
+               options.push('dismount');
              }
+           }
 
-             select(this).call(svgIcon('#' + iconName, 'fix-icon'));
-           });
-           buttons.append('span').attr('class', 'fix-message').html(function (d) {
-             return d.title;
+           return options.map(function (option) {
+             return {
+               title: field.t('options.' + option + '.description'),
+               value: option
+             };
            });
-           fixesEnter.merge(fixes).selectAll('button').classed('actionable', function (d) {
-             return d.onClick;
-           }).attr('disabled', function (d) {
-             return d.onClick ? null : 'true';
+         };
+
+         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'
+           }
+         };
+
+         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) {
-             if (d.disabledReason) {
-               return d.disabledReason;
+             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');
              }
 
-             return null;
-           });
-         }
+             if (d === 'access') {
+               return 'yes';
+             }
 
-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
+             if (tags.access && typeof tags.access === 'string') {
+               return tags.access;
+             }
+
+             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 (!_entityIDs || !val || !utilArrayIdentical(_entityIDs, val)) {
-             _entityIDs = val;
-             _activeIssueID = null;
-             reloadIssues();
-           }
+             return field.placeholder();
+           });
+         };
 
-           return section;
+         access.focus = function () {
+           items.selectAll('.preset-input-access').node().focus();
          };
 
-         return section;
+         return utilRebind(access, dispatch, 'on');
        }
 
-       function uiPresetIcon() {
-         var _preset;
+       function uiFieldAddress(field, context) {
+         var dispatch = dispatch$8('change');
 
-         var _geometry;
+         var _selection = select(null);
 
-         var _sizeClass = 'medium';
+         var _wrap = select(null);
 
-         function isSmall() {
-           return _sizeClass === 'small';
-         }
+         var addrField = _mainPresetIndex.field('address'); // needed for placeholder strings
 
-         function presetIcon(selection) {
-           selection.each(render);
-         }
+         var _entityIDs = [];
 
-         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';
-         }
+         var _tags;
 
-         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);
-         }
+         var _countryCode;
 
-         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);
+         var _addressFormats = [{
+           format: [['housenumber', 'street'], ['city', 'postcode']]
+         }];
+         _mainFileFetcher.get('address_formats').then(function (d) {
+           _addressFormats = d;
 
-           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));
+           if (!_selection.empty()) {
+             _selection.call(address);
            }
-         }
-
-         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);
-         }
+         })["catch"](function () {
+           /* ignore */
+         });
 
-         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);
+         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');
 
-           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);
-             });
+           function isAddressable(d) {
+             return d.tags.highway && d.tags.name && d.type === 'way';
            }
-
-           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 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 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 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
-
-           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);
+         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;
            });
-           route = routeEnter.merge(route);
-
-           if (drawRoute) {
-             var routeType = p.tags.type === 'waterway' ? 'waterway' : p.tags.route;
-             var segmentPresetIDs = routeSegments[routeType];
+           return utilArrayUniqBy(cities, 'value');
 
-             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 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;
              }
-           }
-         }
-
-         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 = '';
 
-           if (isMaki) {
-             suffix = isSmall() && geom === 'point' ? '-11' : '-15';
+             if (d.tags['addr:city']) return true;
+             return false;
            }
-
-           icon.selectAll('use').attr('href', '#' + picon + suffix);
          }
 
-         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 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']
-         };
-
-         function render() {
-           var p = _preset.apply(this, arguments);
+         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');
+         }
 
-           var geom = _geometry ? _geometry.apply(this, arguments) : null;
+         function updateForCountryCode() {
+           if (!_countryCode) return;
+           var addressFormat;
 
-           if (geom === 'relation' && p.tags && (p.tags.type === 'route' && p.tags.route && routeSegments[p.tags.route] || p.tags.type === 'waterway')) {
-             geom = 'route';
-           }
+           for (var i = 0; i < _addressFormats.length; i++) {
+             var format = _addressFormats[i];
 
-           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) : {};
+             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
 
-           for (var k in tags) {
-             if (tags[k] === '*') {
-               tags[k] = 'yes';
+               break;
              }
            }
 
-           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);
-         }
-
-         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;
-         };
+           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
+           };
 
-         presetIcon.sizeClass = function (val) {
-           if (!arguments.length) return _sizeClass;
-           _sizeClass = val;
-           return presetIcon;
-         };
+           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
+               };
+             });
+           }
 
-         return presetIcon;
-       }
+           var rows = _wrap.selectAll('.addr-row').data(addressFormat.format, function (d) {
+             return d.toString();
+           });
 
-       function uiSectionFeatureType(context) {
-         var dispatch = dispatch$8('choose');
-         var _entityIDs = [];
-         var _presets = [];
+           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 _tagReference;
+           function addDropdown(d) {
+             if (dropdowns.indexOf(d.id) === -1) return; // not a dropdown
 
-         var section = uiSection('feature-type', context).label(_t.html('inspector.feature_type')).disclosureContent(renderDisclosureContent);
+             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));
+             }));
+           }
 
-         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
+           _wrap.selectAll('input').on('blur', change()).on('change', change());
 
-           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);
-           }
+           _wrap.selectAll('input:not(.combobox-input)').on('input', change(true));
 
-           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();
-           });
-           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;
-           });
-           nameparts.exit().remove();
-           nameparts.enter().append('div').attr('class', 'namepart').html(function (d) {
-             return d;
-           });
+           if (_tags) updateTags(_tags);
          }
 
-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return section;
-         };
+         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();
 
-         section.presets = function (val) {
-           if (!arguments.length) return _presets; // don't reload the same preset
+           if (extent) {
+             var countryCode;
 
-           if (!utilArrayIdentical(val, _presets)) {
-             _presets = val;
+             if (context.inIntro()) {
+               // localize the address format for the walkthrough
+               countryCode = _t('intro.graph.countrycode');
+             } else {
+               var center = extent.center();
+               countryCode = iso1A2Code(center);
+             }
 
-             if (_presets.length === 1) {
-               _tagReference = uiTagReference(_presets[0].reference()).showing(false);
+             if (countryCode) {
+               _countryCode = countryCode.toLowerCase();
+               updateForCountryCode();
              }
            }
+         }
 
-           return section;
-         };
+         function change(onInput) {
+           return function () {
+             var tags = {};
 
-         function entityGeometries() {
-           var counts = {};
+             _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
 
-           for (var i in _entityIDs) {
-             var geometry = context.graph().geometry(_entityIDs[i]);
-             if (!counts[geometry]) counts[geometry] = 0;
-             counts[geometry] += 1;
-           }
+               if (Array.isArray(_tags[key]) && !value) return;
+               tags[key] = value || undefined;
+             });
 
-           return Object.keys(counts).sort(function (geom1, geom2) {
-             return counts[geom2] - counts[geom1];
-           });
+             dispatch.call('change', this, tags, onInput);
+           };
          }
 
-         return utilRebind(section, dispatch, 'on');
-       }
-
-       // It borrows some code from uiHelp
+         function updatePlaceholder(inputSelection) {
+           return inputSelection.attr('placeholder', function (subfield) {
+             if (_tags && Array.isArray(_tags[field.key + ':' + subfield.id])) {
+               return _t('inspector.multiple_values');
+             }
 
-       function uiFieldHelp(context, fieldName) {
-         var fieldHelp = {};
+             if (_countryCode) {
+               var localkey = subfield.id + '!' + _countryCode;
+               var tkey = addrField.hasTextForStringId('placeholders.' + localkey) ? localkey : subfield.id;
+               return addrField.t('placeholders.' + tkey);
+             }
+           });
+         }
 
-         var _inspector = select(null);
+         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') : undefined;
+           }).classed('mixed', function (subfield) {
+             return Array.isArray(tags[field.key + ':' + subfield.id]);
+           }).call(updatePlaceholder);
+         }
 
-         var _wrap = select(null);
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }
 
-         var _body = select(null);
+         address.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return address;
+         };
 
-         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']]]
+         address.tags = function (tags) {
+           _tags = tags;
+           updateTags(tags);
          };
-         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?
+         address.focus = function () {
+           var node = _wrap.selectAll('input').node();
 
-             var hhh = depth ? Array(depth + 1).join('#') + ' ' : ''; // if so, prepend with some ##'s
+           if (node) node.focus();
+         };
 
-             return all + hhh + _t.html(subkey, replacements) + '\n\n';
-           }, '');
-           return {
-             key: helpkey,
-             title: _t.html(helpkey + '.title'),
-             html: marked_1(text.trim())
-           };
-         });
+         return utilRebind(address, dispatch, 'on');
+       }
 
-         function show() {
-           updatePosition();
+       function uiFieldCycleway(field, context) {
+         var dispatch = dispatch$8('change');
+         var items = select(null);
+         var wrap = select(null);
 
-           _body.classed('hide', false).style('opacity', '0').transition().duration(200).style('opacity', '1');
-         }
+         var _tags;
 
-         function hide() {
-           _body.classed('hide', true).transition().duration(200).style('opacity', '0').on('end', function () {
-             _body.classed('hide', true);
+         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)));
+           });
+           items = items.merge(enter); // Update
+
+           wrap.selectAll('.preset-input-cycleway').on('change', change).on('blur', change);
          }
 
-         function clickHelp(index) {
-           var d = docs[index];
-           var tkeys = fieldHelpKeys[fieldName][index][1];
+         function change(d3_event, key) {
+           var newValue = context.cleanTagValue(utilGetSetValue(select(this))); // don't override multiple values with blank string
 
-           _body.selectAll('.field-help-nav-item').classed('active', function (d, i) {
-             return i === index;
-           });
+           if (!newValue && (Array.isArray(_tags.cycleway) || Array.isArray(_tags[key]))) return;
 
-           var content = _body.selectAll('.field-help-content').html(d.html); // class the paragraphs so we can find and style them
+           if (newValue === 'none' || newValue === '') {
+             newValue = undefined;
+           }
 
+           var otherKey = key === 'cycleway:left' ? 'cycleway:right' : 'cycleway:left';
+           var otherValue = typeof _tags.cycleway === 'string' ? _tags.cycleway : _tags[otherKey];
 
-           content.selectAll('p').attr('class', function (d, i) {
-             return tkeys[i];
-           }); // insert special content for certain help sections
+           if (otherValue && Array.isArray(otherValue)) {
+             // we must always have an explicit value for comparison
+             otherValue = otherValue[0];
+           }
 
-           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 (otherValue === 'none' || otherValue === '') {
+             otherValue = undefined;
            }
-         }
 
-         fieldHelp.button = function (selection) {
-           if (_body.empty()) return;
-           var button = selection.selectAll('.field-help-button').data([0]); // enter/update
+           var tag = {}; // If the left and right tags match, use the cycleway tag to tag both
+           // sides the same way
 
-           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();
+           if (newValue === otherValue) {
+             tag = {
+               cycleway: newValue,
+               'cycleway:left': undefined,
+               'cycleway:right': undefined
+             };
+           } else {
+             // Always set both left and right as changing one can affect the other
+             tag = {
+               cycleway: undefined
+             };
+             tag[key] = newValue;
+             tag[otherKey] = otherValue;
+           }
 
-             if (_body.classed('hide')) {
-               show();
-             } else {
-               hide();
-             }
+           dispatch.call('change', this, tag);
+         }
+
+         cycleway.options = function () {
+           return field.options.map(function (option) {
+             return {
+               title: field.t('options.' + option + '.description'),
+               value: option
+             };
            });
          };
 
-         function updatePosition() {
-           var wrap = _wrap.node();
-
-           var inspector = _inspector.node();
-
-           var wRect = wrap.getBoundingClientRect();
-           var iRect = inspector.getBoundingClientRect();
+         cycleway.tags = function (tags) {
+           _tags = tags; // If cycleway is set, use that instead of individual values
 
-           _body.style('top', wRect.top + inspector.scrollTop - iRect.top + 'px');
-         }
+           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 = [];
 
-         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
+               if (Array.isArray(tags.cycleway)) {
+                 vals = vals.concat(tags.cycleway);
+               }
 
-           _inspector = context.container().select('.sidebar .entity-editor-pane .inspector-body');
-           if (_inspector.empty()) return;
-           _body = _inspector.selectAll('.field-help-body').data([0]);
+               if (Array.isArray(tags[d])) {
+                 vals = vals.concat(tags[d]);
+               }
 
-           var enter = _body.enter().append('div').attr('class', 'field-help-body hide'); // initially hidden
+               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');
+             }
 
-           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));
+             return field.placeholder();
+           }).classed('mixed', function (d) {
+             return Array.isArray(tags.cycleway) || Array.isArray(tags[d]);
            });
-           enter.append('div').attr('class', 'field-help-content');
-           _body = _body.merge(enter);
-           clickHelp(0);
          };
 
-         return fieldHelp;
+         cycleway.focus = function () {
+           var node = wrap.selectAll('input').node();
+           if (node) node.focus();
+         };
+
+         return utilRebind(cycleway, dispatch, 'on');
        }
 
-       function uiFieldCheck(field, context) {
+       function uiFieldLanes(field, context) {
          var dispatch = dispatch$8('change');
-         var options = field.options;
-         var values = [];
-         var texts = [];
+         var LANE_WIDTH = 40;
+         var LANE_HEIGHT = 200;
+         var _entityIDs = [];
 
-         var _tags;
+         function lanes(selection) {
+           var lanesData = context.entity(_entityIDs[0]).lanes();
 
-         var input = select(null);
-         var text = select(null);
-         var label = select(null);
-         var reverser = select(null);
+           if (!context.container().select('.inspector-wrap.inspector-hidden').empty() || !selection.node().parentNode) {
+             selection.call(lanes.off);
+             return;
+           }
 
-         var _impliedYes;
+           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).text('▲');
+           enter.append('g').attr('class', 'bothways').append('text').attr('y', 40).attr('x', 14).text('▲▼');
+           enter.append('g').attr('class', 'backward').append('text').attr('y', 40).attr('x', 14).text('▼');
+           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';
+           });
+         }
 
-         var _entityIDs = [];
+         lanes.entityIDs = function (val) {
+           _entityIDs = val;
+         };
 
-         var _value;
+         lanes.tags = function () {};
 
-         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')];
+         lanes.focus = function () {};
 
-           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"
+         lanes.off = function () {};
 
+         return utilRebind(lanes, dispatch, 'on');
+       }
+       uiFieldLanes.supportsMultiselection = false;
 
-         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
+       var _languagesArray = [];
+       function uiFieldLocalized(field, context) {
+         var dispatch = dispatch$8('change', 'input');
+         var wikipedia = services.wikipedia;
+         var input = select(null);
+         var localizedInputs = select(null);
 
-           if (field.id === 'oneway') {
-             var entity = context.entity(_entityIDs[0]);
+         var _countryCode;
 
-             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;
-               }
-             }
-           }
-         }
+         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 reverserHidden() {
-           if (!context.container().select('div.inspector-hover').empty()) return true;
-           return !(_value === 'yes' || _impliedYes && !_value);
-         }
 
-         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;
-         }
+         _mainFileFetcher.get('languages').then(loadLanguagesArray)["catch"](function () {
+           /* ignore */
+         });
+         var _territoryLanguages = {};
+         _mainFileFetcher.get('territory_languages').then(function (d) {
+           _territoryLanguages = d;
+         })["catch"](function () {
+           /* ignore */
+         }); // reuse these combos
 
-         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');
+         var langCombo = uiCombobox(context, 'localized-lang').fetcher(fetchLanguages).minItems(0);
 
-           if (field.type === 'onewayCheck') {
-             enter.append('button').attr('class', 'reverser' + (reverserHidden() ? ' hide' : '')).append('span').attr('class', 'reverser-span');
-           }
+         var _selection = select(null);
 
-           label = label.merge(enter);
-           input = label.selectAll('input');
-           text = label.selectAll('span.value');
-           input.on('click', function (d3_event) {
-             d3_event.stopPropagation();
-             var t = {};
+         var _multilingual = [];
 
-             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)
+         var _buttonTip = uiTooltip().title(_t.html('translate.translate')).placement('left');
 
+         var _wikiTitles;
 
-             if (t[field.key] === 'reversible' || t[field.key] === 'alternating') {
-               t[field.key] = values[0];
-             }
+         var _entityIDs = [];
 
-             dispatch.call('change', this, t);
-           });
+         function loadLanguagesArray(dataLanguages) {
+           if (_languagesArray.length !== 0) return; // some conversion is needed to ensure correct OSM tags are used
 
-           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);
-                 }
+           var replacements = {
+             sr: 'sr-Cyrl',
+             // in OSM, `sr` implies Cyrillic
+             'sr-Cyrl': false // `sr-Cyrl` isn't used in OSM
 
-                 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);
+           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)
              });
            }
-         };
+         }
 
-         check.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return check;
-         };
+         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
 
-         check.tags = function (tags) {
-           _tags = tags;
+             if (entity.tags.wikidata) return true; // Assume the name has already been confirmed if its source has been researched
 
-           function isChecked(val) {
-             return val !== 'no' && val !== '' && val !== undefined && val !== null;
-           }
+             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`
 
-           function textFor(val) {
-             if (val === '') val = undefined;
-             var index = values.indexOf(val);
-             return index !== -1 ? texts[index] : '"' + val + '"';
-           }
+             var preset = _mainPresetIndex.match(entity, context.graph());
 
-           checkImpliedYes();
-           var isMixed = Array.isArray(tags[field.key]);
-           _value = !isMixed && tags[field.key] && tags[field.key].toLowerCase();
+             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);
+             }
 
-           if (field.type === 'onewayCheck' && (_value === '1' || _value === '-1')) {
-             _value = 'yes';
-           }
+             return false;
+           });
 
-           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);
+           field.locked(isLocked);
+         } // update _multilingual, maintaining the existing order
 
-           if (field.type === 'onewayCheck') {
-             reverser.classed('hide', reverserHidden()).call(reverserSetText);
-           }
-         };
 
-         check.focus = function () {
-           input.node().focus();
-         };
+         function calcMultilingual(tags) {
+           var existingLangsOrdered = _multilingual.map(function (item) {
+             return item.lang;
+           });
 
-         return utilRebind(check, dispatch, 'on');
-       }
+           var existingLangs = new Set(existingLangsOrdered.filter(Boolean));
 
-       function uiFieldCombo(field, context) {
-         var dispatch = dispatch$8('change');
+           for (var k in tags) {
+             var m = k.match(/^(.*):(.*)$/);
 
-         var _isMulti = field.type === 'multiCombo' || field.type === 'manyCombo';
+             if (m && m[1] === field.key && m[2]) {
+               var item = {
+                 lang: m[2],
+                 value: tags[k]
+               };
 
-         var _isNetwork = field.type === 'networkCombo';
+               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 _isSemi = field.type === 'semiCombo';
 
-         var _optarray = field.options;
+           _multilingual.forEach(function (item) {
+             if (item.lang && existingLangs.has(item.lang)) {
+               item.value = '';
+             }
+           });
+         }
 
-         var _showTagInfoSuggestions = field.type !== 'manyCombo' && field.autoSuggestions !== false;
+         function localized(selection) {
+           _selection = selection;
+           calcLocked();
+           var isLocked = field.locked();
+           var wrap = selection.selectAll('.form-field-input-wrap').data([0]); // enter/update
 
-         var _allowCustomValues = field.type !== 'manyCombo' && field.customValues !== false;
+           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
 
-         var _snake_case = field.snake_case || field.snake_case === undefined;
+           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').attr('aria-label', _t('icons.plus')).call(svgIcon('#iD-icon-plus')).merge(translateButton);
+           translateButton.classed('disabled', !!isLocked).call(isLocked ? _buttonTip.destroy : _buttonTip).on('click', addNew);
 
-         var _combobox = uiCombobox(context, 'combo-' + field.safeid).caseSensitive(field.caseSensitive).minItems(_isMulti || _isSemi ? 1 : 2);
+           if (_tags && !_multilingual.length) {
+             calcMultilingual(_tags);
+           }
 
-         var _container = select(null);
+           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);
+           selection.selectAll('.combobox-caret').classed('nope', true);
 
-         var _inputWrap = select(null);
+           function addNew(d3_event) {
+             d3_event.preventDefault();
+             if (field.locked()) return;
+             var defaultLang = _mainLocalizer.languageCode().toLowerCase();
 
-         var _input = select(null);
+             var langExists = _multilingual.find(function (datum) {
+               return datum.lang === defaultLang;
+             });
 
-         var _comboData = [];
-         var _multiData = [];
-         var _entityIDs = [];
+             var isLangEn = defaultLang.indexOf('en') > -1;
 
-         var _tags;
+             if (isLangEn || langExists) {
+               defaultLang = '';
+               langExists = _multilingual.find(function (datum) {
+                 return datum.lang === defaultLang;
+               });
+             }
 
-         var _countryCode;
+             if (!langExists) {
+               // prepend the value so it appears at the top
+               _multilingual.unshift({
+                 lang: defaultLang,
+                 value: ''
+               });
 
-         var _staticPlaceholder; // initialize deprecated tags array
+               localizedInputs.call(renderMultilingual);
+             }
+           }
 
+           function change(onInput) {
+             return function (d3_event) {
+               if (field.locked()) {
+                 d3_event.preventDefault();
+                 return;
+               }
 
-         var _dataDeprecated = [];
-         _mainFileFetcher.get('deprecated').then(function (d) {
-           _dataDeprecated = d;
-         })["catch"](function () {
-           /* ignore */
-         }); // ensure multiCombo field.key ends with a ':'
+               var val = utilGetSetValue(select(this));
+               if (!onInput) val = context.cleanTagValue(val); // don't override multiple values with blank string
 
-         if (_isMulti && field.key && /[^:]$/.test(field.key)) {
-           field.key += ':';
+               if (!val && Array.isArray(_tags[field.key])) return;
+               var t = {};
+               t[field.key] = val || undefined;
+               dispatch.call('change', this, t, onInput);
+             };
+           }
          }
 
-         function snake(s) {
-           return s.replace(/\s+/g, '_').toLowerCase();
+         function key(lang) {
+           return field.key + ':' + lang;
          }
 
-         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 changeLang(d3_event, d) {
+           var tags = {}; // make sure unrecognized suffixes are lowercase - #7156
 
-         function tagValue(dval) {
-           dval = clean(dval || '');
+           var lang = utilGetSetValue(select(this)).toLowerCase();
 
-           var found = _comboData.find(function (o) {
-             return o.key && clean(o.value) === dval;
+           var language = _languagesArray.find(function (d) {
+             return d.label.toLowerCase() === lang || d.localName && d.localName.toLowerCase() === lang || d.nativeName && d.nativeName.toLowerCase() === lang;
            });
 
-           if (found) return found.key;
+           if (language) lang = language.code;
 
-           if (field.type === 'typeCombo' && !dval) {
-             return 'yes';
+           if (d.lang && d.lang !== lang) {
+             tags[key(d.lang)] = undefined;
            }
 
-           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 || '';
-
-           if (field.hasTextForStringId('options.' + tval)) {
-             return field.t('options.' + tval, {
-               "default": tval
-             });
-           }
+           var newKey = lang && context.cleanTagKey(key(lang));
+           var value = utilGetSetValue(select(this.parentNode).selectAll('.localized-value'));
 
-           if (field.type === 'typeCombo' && tval.toLowerCase() === 'yes') {
-             return '';
+           if (newKey && value) {
+             tags[newKey] = value;
+           } else if (newKey && _wikiTitles && _wikiTitles[d.lang]) {
+             tags[newKey] = _wikiTitles[d.lang];
            }
 
-           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}]
-         //
+           d.lang = lang;
+           dispatch.call('change', this, tags);
+         }
 
+         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 objectDifference(a, b) {
-           return a.filter(function (d1) {
-             return !b.some(function (d2) {
-               return !d2.isMixed && d1.value === d2.value;
-             });
-           });
+           if (!value && Array.isArray(d.value)) return;
+           var t = {};
+           t[key(d.lang)] = value;
+           d.value = value;
+           dispatch.call('change', this, t);
          }
 
-         function initCombo(selection, attachTo) {
-           if (!_allowCustomValues) {
-             selection.attr('readonly', 'readonly');
-           }
+         function fetchLanguages(value, cb) {
+           var v = value.toLowerCase(); // show the user's language first
 
-           if (_showTagInfoSuggestions && services.taginfo) {
-             selection.call(_combobox.fetcher(setTaginfoValues), attachTo);
-             setTaginfoValues('', setPlaceholder);
-           } else {
-             selection.call(_combobox, attachTo);
-             setStaticValues(setPlaceholder);
+           var langCodes = [_mainLocalizer.localeCode(), _mainLocalizer.languageCode()];
+
+           if (_countryCode && _territoryLanguages[_countryCode]) {
+             langCodes = langCodes.concat(_territoryLanguages[_countryCode]);
            }
-         }
 
-         function setStaticValues(callback) {
-           if (!_optarray) return;
-           _comboData = _optarray.map(function (v) {
+           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 {
-               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'
+               value: d.label
              };
+           }));
+         }
+
+         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').call(_t.append('translate.localized_translation_label'));
+             text.append('span').attr('class', 'label-textannotation');
+             label.append('button').attr('class', 'remove-icon-multilingual').attr('title', _t('icons.remove')).on('click', function (d3_event, d) {
+               if (field.locked()) return;
+               d3_event.preventDefault(); // remove the UI item manually
 
-           _combobox.data(objectDifference(_comboData, _multiData));
+               _multilingual.splice(_multilingual.indexOf(d), 1);
 
-           if (callback) callback(_comboData);
-         }
+               var langKey = d.lang && key(d.lang);
 
-         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 (langKey && langKey in _tags) {
+                 delete _tags[langKey]; // remove from entity tags
 
-           if (hasCountryPrefix) {
-             query = _countryCode + ':';
-           }
+                 var t = {};
+                 t[langKey] = undefined;
+                 dispatch.call('change', this, t);
+                 return;
+               }
 
-           var params = {
-             debounce: q !== '',
-             key: field.key,
-             query: query
-           };
+               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
 
-           if (_entityIDs.length) {
-             params.geometry = context.graph().geometry(_entityIDs[0]);
-           }
+           entries.classed('present', true);
+           utilGetSetValue(entries.select('.localized-lang'), function (d) {
+             var langItem = _languagesArray.find(function (item) {
+               return item.code === d.lang;
+             });
 
-           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
+             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);
+           });
+         }
 
+         localized.tags = function (tags) {
+           _tags = tags; // Fetch translations from wikipedia
 
-               return !d.count || d.count > 10;
-             });
-             var deprecatedValues = osmEntity.deprecatedTagValuesByKey(_dataDeprecated)[field.key];
+           if (typeof tags.wikipedia === 'string' && !_wikiTitles) {
+             _wikiTitles = {};
+             var wm = tags.wikipedia.match(/([^:]+):(.+)/);
 
-             if (deprecatedValues) {
-               // don't suggest deprecated tag values
-               data = data.filter(function (d) {
-                 return deprecatedValues.indexOf(d.value) === -1;
+             if (wm && wm[0] && wm[1]) {
+               wikipedia.translations(wm[1], wm[2], function (err, d) {
+                 if (err || !d) return;
+                 _wikiTitles = d;
                });
              }
+           }
 
-             if (hasCountryPrefix) {
-               data = data.filter(function (d) {
-                 return d.value.toLowerCase().indexOf(_countryCode + ':') === 0;
-               });
-             } // hide the caret if there are no suggestions
+           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);
+         };
 
-             _container.classed('empty-combobox', data.length === 0);
+         localized.focus = function () {
+           input.node().focus();
+         };
 
-             _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);
-           });
-         }
+         localized.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           _multilingual = [];
+           loadCountryCode();
+           return localized;
+         };
 
-         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(', ');
-           }
+         function loadCountryCode() {
+           var extent = combinedEntityExtent();
+           var countryCode = extent && iso1A2Code(extent.center());
+           _countryCode = countryCode && countryCode.toLowerCase();
+         }
 
-           if (!/(…|\.\.\.)$/.test(_staticPlaceholder)) {
-             _staticPlaceholder += '…';
-           }
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }
 
-           var ph;
+         return utilRebind(localized, dispatch, 'on');
+       }
 
-           if (!_isMulti && !_isSemi && _tags && Array.isArray(_tags[field.key])) {
-             ph = _t('inspector.multiple_values');
-           } else {
-             ph = _staticPlaceholder;
-           }
+       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 = [];
 
-           _container.selectAll('input').attr('placeholder', ph);
-         }
+         var _tags;
 
-         function change() {
-           var t = {};
-           var val;
+         var _isImperial;
 
-           if (_isMulti || _isSemi) {
-             val = tagValue(utilGetSetValue(_input).replace(/,/g, ';')) || '';
+         var primaryUnits = [{
+           value: 'm',
+           title: _t('inspector.roadheight.meter')
+         }, {
+           value: 'ft',
+           title: _t('inspector.roadheight.foot')
+         }];
+         var unitCombo = uiCombobox(context, 'roadheight-unit').data(primaryUnits);
 
-             _container.classed('active', false);
+         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);
 
-             utilGetSetValue(_input, '');
-             var vals = val.split(';').filter(Boolean);
-             if (!vals.length) return;
+           function changeUnits() {
+             _isImperial = utilGetSetValue(primaryUnitInput) === 'ft';
+             utilGetSetValue(primaryUnitInput, _isImperial ? 'ft' : 'm');
+             setUnitSuggestions();
+             change();
+           }
+         }
 
-             if (_isMulti) {
-               utilArrayUniq(vals).forEach(function (v) {
-                 var key = (field.key || '') + v;
+         function setUnitSuggestions() {
+           utilGetSetValue(primaryUnitInput, _isImperial ? 'ft' : 'm');
+         }
 
-                 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;
-                 }
+         function change() {
+           var tag = {};
+           var primaryValue = utilGetSetValue(primaryInput).trim();
+           var secondaryValue = utilGetSetValue(secondaryInput).trim(); // don't override multiple values with blank string
 
-                 key = context.cleanTagKey(key);
-                 field.keys.push(key);
-                 t[key] = 'yes';
-               });
-             } else if (_isSemi) {
-               var arr = _multiData.map(function (d) {
-                 return d.key;
-               });
+           if (!primaryValue && !secondaryValue && Array.isArray(_tags[field.key])) return;
 
-               arr = arr.concat(vals);
-               t[field.key] = context.cleanTagValue(utilArrayUniq(arr).filter(Boolean).join(';'));
+           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 + '\'');
              }
 
-             window.setTimeout(function () {
-               _input.node().focus();
-             }, 10);
-           } else {
-             var rawValue = utilGetSetValue(_input); // don't override multiple values with blank string
+             if (secondaryValue !== '') {
+               secondaryValue = context.cleanTagValue(secondaryValue + '"');
+             }
 
-             if (!rawValue && Array.isArray(_tags[field.key])) return;
-             val = context.cleanTagValue(tagValue(rawValue));
-             t[field.key] = val || undefined;
+             tag[field.key] = primaryValue + secondaryValue;
            }
 
-           dispatch.call('change', this, t);
+           dispatch.call('change', this, tag);
          }
 
-         function removeMultikey(d3_event, d) {
-           d3_event.preventDefault();
-           d3_event.stopPropagation();
-           var t = {};
+         roadheight.tags = function (tags) {
+           _tags = tags;
+           var primaryValue = tags[field.key];
+           var secondaryValue;
+           var isMixed = Array.isArray(primaryValue);
 
-           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);
+           if (!isMixed) {
+             if (primaryValue && (primaryValue.indexOf('\'') >= 0 || primaryValue.indexOf('"') >= 0)) {
+               secondaryValue = primaryValue.match(/(-?[\d.]+)"/);
 
-             arr = utilArrayUniq(arr);
-             t[field.key] = arr.length ? arr.join(';') : undefined;
+               if (secondaryValue !== null) {
+                 secondaryValue = secondaryValue[1];
+               }
+
+               primaryValue = primaryValue.match(/(-?[\d.]+)'/);
+
+               if (primaryValue !== null) {
+                 primaryValue = primaryValue[1];
+               }
+
+               _isImperial = true;
+             } else if (primaryValue) {
+               _isImperial = false;
+             }
            }
 
-           dispatch.call('change', this, t);
-         }
+           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);
+         };
 
-         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);
+         roadheight.focus = function () {
+           primaryInput.node().focus();
+         };
 
-           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
+         roadheight.entityIDs = function (val) {
+           _entityIDs = val;
+         };
 
-             if (field.key === 'destination' || field.key === 'via') {
-               listClass += ' full-line-chips';
-             }
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }
 
-             _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]);
-           }
+         return utilRebind(roadheight, dispatch, 'on');
+       }
 
-           _input = _input.enter().append('input').attr('type', 'text').attr('id', field.domId).call(utilNoAuto).call(initCombo, selection).merge(_input);
+       function uiFieldRoadspeed(field, context) {
+         var dispatch = dispatch$8('change');
+         var unitInput = select(null);
+         var input = select(null);
+         var _entityIDs = [];
 
-           if (_isNetwork) {
-             var extent = combinedEntityExtent();
-             var countryCode = extent && iso1A2Code(extent.center());
-             _countryCode = countryCode && countryCode.toLowerCase();
-           }
+         var _tags;
 
-           _input.on('change', change).on('blur', change);
+         var _isImperial;
 
-           _input.on('keydown.field', function (d3_event) {
-             switch (d3_event.keyCode) {
-               case 13:
-                 // ↩ Return
-                 _input.node().blur(); // blurring also enters the value
+         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').attr('aria-label', _t('inspector.speed_unit')).call(unitCombo).merge(unitInput);
+           unitInput.on('blur', changeUnits).on('change', changeUnits);
 
-                 d3_event.stopPropagation();
-                 break;
-             }
-           });
+           function changeUnits() {
+             _isImperial = utilGetSetValue(unitInput) === 'mph';
+             utilGetSetValue(unitInput, _isImperial ? 'mph' : 'km/h');
+             setUnitSuggestions();
+             change();
+           }
+         }
 
-           if (_isMulti || _isSemi) {
-             _combobox.on('accept', function () {
-               _input.node().blur();
+         function setUnitSuggestions() {
+           speedCombo.data((_isImperial ? imperialValues : metricValues).map(comboValues));
+           utilGetSetValue(unitInput, _isImperial ? 'mph' : 'km/h');
+         }
 
-               _input.node().focus();
-             });
+         function comboValues(d) {
+           return {
+             value: d.toString(),
+             title: d.toString()
+           };
+         }
 
-             _input.on('focus', function () {
-               _container.classed('active', true);
-             });
+         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;
+
+           if (!value) {
+             tag[field.key] = undefined;
+           } else if (isNaN(value) || !_isImperial) {
+             tag[field.key] = context.cleanTagValue(value);
+           } else {
+             tag[field.key] = context.cleanTagValue(value + ' mph');
            }
+
+           dispatch.call('change', this, tag);
          }
 
-         combo.tags = function (tags) {
+         roadspeed.tags = function (tags) {
            _tags = tags;
+           var value = tags[field.key];
+           var isMixed = Array.isArray(value);
 
-           if (_isMulti || _isSemi) {
-             _multiData = [];
-             var maxLength;
-
-             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;
+           if (!isMixed) {
+             if (value && value.indexOf('mph') >= 0) {
+               value = parseInt(value, 10).toString();
+               _isImperial = true;
+             } else if (value) {
+               _isImperial = false;
+             }
+           }
 
-                 _multiData.push({
-                   key: k,
-                   value: displayValue(suffix),
-                   isMixed: Array.isArray(v)
-                 });
-               }
+           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);
+         };
 
-               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
+         roadspeed.focus = function () {
+           input.node().focus();
+         };
 
-                 maxLength = context.maxCharsForTagKey() - utilUnicodeCharsCount(field.key);
-               } else {
-                 maxLength = context.maxCharsForTagKey();
-               }
-             } else if (_isSemi) {
-               var allValues = [];
-               var commonValues;
+         roadspeed.entityIDs = function (val) {
+           _entityIDs = val;
+         };
 
-               if (Array.isArray(tags[field.key])) {
-                 tags[field.key].forEach(function (tagVal) {
-                   var thisVals = utilArrayUniq((tagVal || '').split(';')).filter(Boolean);
-                   allValues = allValues.concat(thisVals);
+         function combinedEntityExtent() {
+           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+         }
 
-                   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;
-               }
+         return utilRebind(roadspeed, dispatch, 'on');
+       }
 
-               _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 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
 
-               maxLength = context.maxCharsForTagValue() - currLength;
+         var typeField;
+         var layerField;
+         var _oldType = {};
+         var _entityIDs = [];
 
-               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
+         function selectedKey() {
+           var node = wrap.selectAll('.form-field-input-radio label.active input');
+           return !node.empty() && node.datum();
+         }
 
+         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);
+         }
 
-             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 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
 
-             var available = objectDifference(_comboData, _multiData);
+           if (type) {
+             if (!typeField || typeField.id !== selected) {
+               typeField = uiField(context, type, _entityIDs, {
+                 wrap: false
+               }).on('change', changeType);
+             }
 
-             _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
+             typeField.tags(tags);
+           } else {
+             typeField = null;
+           }
 
+           var typeItem = list.selectAll('.structure-type-item').data(typeField ? [typeField] : [], function (d) {
+             return d.id;
+           }); // Exit
 
-             var hideAdd = !_allowCustomValues && !available.length || maxLength <= 0;
+           typeItem.exit().remove(); // Enter
 
-             _container.selectAll('.chiplist .input-wrap').style('display', hideAdd ? 'none' : null); // Render chips
+           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).call(_t.append('inspector.radio.structure.type'));
+           typeEnter.append('div').attr('class', 'structure-input-type-wrap'); // Update
 
+           typeItem = typeItem.merge(typeEnter);
 
-             var chips = _container.selectAll('.chip').data(_multiData);
+           if (typeField) {
+             typeItem.selectAll('.structure-input-type-wrap').call(typeField.render);
+           } // 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('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 (allowDragAndDrop) {
-               registerDragAndDrop(chips);
+           if (layer && showLayer) {
+             if (!layerField) {
+               layerField = uiField(context, layer, _entityIDs, {
+                 wrap: false
+               }).on('change', changeLayer);
              }
 
-             chips.select('span').html(function (d) {
-               return d.value;
-             });
-             chips.select('a').attr('href', '#').on('click', removeMultikey).attr('class', 'remove').html('×');
+             layerField.tags(tags);
+             field.keys = utilArrayUnion(field.keys, ['layer']);
            } else {
-             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);
-               }
+             layerField = null;
+             field.keys = field.keys.filter(function (k) {
+               return k !== 'layer';
              });
            }
-         };
 
-         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;
+           var layerItem = list.selectAll('.structure-layer-item').data(layerField ? [layerField] : []); // Exit
 
-             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();
+           layerItem.exit().remove(); // Enter
 
-                 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;
-                   }
+           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').call(_t.append('inspector.radio.structure.layer'));
+           layerEnter.append('div').attr('class', 'structure-input-layer-wrap'); // Update
 
-                   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;
-                   }
+           layerItem = layerItem.merge(layerEnter);
 
-                   return 'translateY(100%)';
-                 }
+           if (layerField) {
+             layerItem.selectAll('.structure-input-layer-wrap').call(layerField.render);
+           }
+         }
 
-                 return null;
-               });
-             } else {
-               _container.selectAll('.chip').each(function (d2, index2) {
-                 var node = select(this).node(); // check the cursor is in the bounding box
+         function changeType(t, onInput) {
+           var key = selectedKey();
+           if (!key) return;
+           var val = t[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();
+           if (val !== 'no') {
+             _oldType[key] = val;
+           }
 
-                 if (index === index2) {
-                   return 'translate(' + x + 'px, ' + y + 'px)';
-                 } // only translate tags in the same row
+           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
 
 
-                 if (node.offsetTop === targetIndexOffsetTop) {
-                   if (index2 < index && index2 >= targetIndex) {
-                     return 'translateX(' + draggedTagWidth + 'px)';
-                   } else if (index2 > index && index2 <= targetIndex) {
-                     return 'translateX(-' + draggedTagWidth + 'px)';
-                   }
-                 }
+             if (t.layer === undefined) {
+               if (key === 'bridge' && val !== 'no') {
+                 t.layer = '1';
+               }
 
-                 return null;
-               });
-             }
-           }).on('end', function () {
-             if (!select(this).classed('dragging')) {
-               return;
+               if (key === 'tunnel' && val !== 'no' && val !== 'building_passage') {
+                 t.layer = '-1';
+               }
              }
+           }
 
-             var index = selection.nodes().indexOf(this);
-             select(this).classed('dragging', false);
+           dispatch.call('change', this, t, onInput);
+         }
 
-             _container.selectAll('.chip').style('transform', null);
+         function changeLayer(t, onInput) {
+           if (t.layer === '0') {
+             t.layer = undefined;
+           }
 
-             if (typeof targetIndex === 'number') {
-               var element = _multiData[index];
+           dispatch.call('change', this, t, onInput);
+         }
 
-               _multiData.splice(index, 1);
+         function changeRadio() {
+           var t = {};
+           var activeKey;
 
-               _multiData.splice(targetIndex, 0, element);
+           if (field.key) {
+             t[field.key] = undefined;
+           }
 
-               var t = {};
+           radios.each(function (d) {
+             var active = select(this).property('checked');
+             if (active) activeKey = d;
 
-               if (_multiData.length) {
-                 t[field.key] = _multiData.map(function (element) {
-                   return element.key;
-                 }).join(';');
-               } else {
-                 t[field.key] = undefined;
-               }
+             if (field.key) {
+               if (active) t[field.key] = d;
+             } else {
+               var val = _oldType[activeKey] || 'yes';
+               t[d] = active ? val : undefined;
+             }
+           });
 
-               dispatch.call('change', this, t);
+           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;
              }
+           }
 
-             dragOrigin = undefined;
-             targetIndex = undefined;
-           }));
+           dispatch.call('change', this, t);
          }
 
-         combo.focus = function () {
-           _input.node().focus();
-         };
-
-         combo.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return combo;
-         };
-
-         function combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
-         }
+         radio.tags = function (tags) {
+           function isOptionChecked(d) {
+             if (field.key) {
+               return tags[field.key] === d;
+             }
 
-         return utilRebind(combo, dispatch, 'on');
-       }
+             return !!(typeof tags[d] === 'string' && tags[d].toLowerCase() !== 'no');
+           }
 
-       function uiFieldText(field, context) {
-         var dispatch = dispatch$8('change');
-         var input = select(null);
-         var outlinkButton = select(null);
-         var _entityIDs = [];
+           function isMixed(d) {
+             if (field.key) {
+               return Array.isArray(tags[field.key]) && tags[field.key].includes(d);
+             }
 
-         var _tags;
+             return Array.isArray(tags[d]);
+           }
 
-         var _phoneFormats = {};
+           radios.property('checked', function (d) {
+             return isOptionChecked(d) && (field.key || field.options.filter(isOptionChecked).length === 1);
+           });
+           labels.classed('active', function (d) {
+             if (field.key) {
+               return Array.isArray(tags[field.key]) && tags[field.key].includes(d) || tags[field.key] === d;
+             }
 
-         if (field.type === 'tel') {
-           _mainFileFetcher.get('phone_formats').then(function (d) {
-             _phoneFormats = d;
-             updatePhonePlaceholder();
-           })["catch"](function () {
-             /* ignore */
+             return Array.isArray(tags[d]) && tags[d].some(function (v) {
+               return typeof v === 'string' && v.toLowerCase() !== 'no';
+             }) || !!(typeof tags[d] === 'string' && 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;
            });
-         }
 
-         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
+           if (selection.empty()) {
+             placeholder.call(_t.append('inspector.none'));
+           } else {
+             placeholder.text(selection.attr('value'));
+             _oldType[selection.datum()] = tags[selection.datum()];
+           }
 
-             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
+           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';
+             }
 
-             var which = field.id; // 'brand', 'network', 'operator', 'flag'
+             wrap.call(structureExtras, tags);
+           }
+         };
 
-             return isSuggestion && !!entity.tags[which] && !!entity.tags[which + ':wikidata'];
-           });
+         radio.focus = function () {
+           radios.node().focus();
+         };
 
-           field.locked(isLocked);
-         }
+         radio.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           _oldType = {};
+           return radio;
+         };
 
-         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' || field.type === 'roadheight' ? '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());
+         radio.isAllowed = function () {
+           return _entityIDs.length === 1;
+         };
 
-           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);
+         return utilRebind(radio, dispatch, 'on');
+       }
 
-               if (domainResults.length >= 2 && domainResults[1]) {
-                 var domain = domainResults[1];
-                 return _t('icons.view_on', {
-                   domain: domain
-                 });
-               }
+       function uiFieldRestrictions(field, context) {
+         var dispatch = dispatch$8('change');
+         var breathe = behaviorBreathe();
+         corePreferences('turn-restriction-via-way', null); // remove old key
 
-               return '';
-             }).on('click', function (d3_event) {
-               d3_event.preventDefault();
-               var value = validIdentifierValueForLink();
+         var storedViaWay = corePreferences('turn-restriction-via-way0'); // use new key #6922
 
-               if (value) {
-                 var url = field.urlFormat.replace(/{value}/, encodeURIComponent(value));
-                 window.open(url, '_blank');
-               }
-             }).merge(outlinkButton);
-           }
-         }
+         var storedDistance = corePreferences('turn-restriction-distance');
 
-         function updatePhonePlaceholder() {
-           if (input.empty() || !Object.keys(_phoneFormats).length) return;
-           var extent = combinedEntityExtent();
-           var countryCode = extent && iso1A2Code(extent.center());
+         var _maxViaWay = storedViaWay !== null ? +storedViaWay : 0;
 
-           var format = countryCode && _phoneFormats[countryCode.toLowerCase()];
+         var _maxDistance = storedDistance ? +storedDistance : 30;
 
-           if (format) input.attr('placeholder', format);
-         }
+         var _initialized = false;
 
-         function validIdentifierValueForLink() {
-           if (field.type === 'identifier' && field.pattern) {
-             var value = utilGetSetValue(input).trim().split(';')[0];
-             return value && value.match(new RegExp(field.pattern));
-           }
+         var _parent = select(null); // the entire field
 
-           return null;
-         } // clamp number to min/max
 
+         var _container = select(null); // just the map
 
-         function clamped(num) {
-           if (field.minValue !== undefined) {
-             num = Math.max(num, field.minValue);
-           }
 
-           if (field.maxValue !== undefined) {
-             num = Math.min(num, field.maxValue);
-           }
+         var _oldTurns;
 
-           return num;
-         }
+         var _graph;
 
-         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
+         var _vertexID;
 
-             if (!val && Array.isArray(_tags[field.key])) return;
+         var _intersection;
 
-             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(';');
-               }
+         var _fromWayID;
 
-               utilGetSetValue(input, val);
-             }
+         var _lastXPos;
 
-             t[field.key] = val || undefined;
-             dispatch.call('change', this, t, onInput);
-           };
-         }
+         function restrictions(selection) {
+           _parent = selection; // try to reuse the intersection, but always rebuild it if the graph has changed
 
-         i.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return i;
-         };
+           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.
 
-         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);
+           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
+
+           select(selection.node().parentNode).classed('hide', !isOK); // if form field is hidden or has detached from dom, clean up.
+
+           if (!isOK || !context.container().select('.inspector-wrap.inspector-hidden').empty() || !selection.node().parentNode || !selection.node().parentNode.parentNode) {
+             selection.call(restrictions.off);
+             return;
            }
-         };
 
-         i.focus = function () {
-           var node = input.node();
-           if (node) node.focus();
-         };
+           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
 
-         function combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+           var containerEnter = container.enter().append('div').attr('class', 'restriction-container');
+           containerEnter.append('div').attr('class', 'restriction-help'); // update
+
+           _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);
          }
 
-         return utilRebind(i, dispatch, 'on');
-       }
+         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').call(_t.append('restriction.controls.distance', {
+             suffix: ':'
+           }));
+           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 uiFieldAccess(field, context) {
-         var dispatch = dispatch$8('change');
-         var items = select(null);
+           selection.selectAll('.restriction-distance-input').property('value', _maxDistance).on('input', function () {
+             var val = select(this).property('value');
+             _maxDistance = +val;
+             _intersection = null;
 
-         var _tags;
+             _container.selectAll('.layer-osm .layer-turns *').remove();
 
-         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
+             corePreferences('turn-restriction-distance', _maxDistance);
 
-           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);
+             _parent.call(restrictions);
            });
-           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.selectAll('.restriction-distance-text').call(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').call(_t.append('restriction.controls.via', {
+             suffix: ':'
+           }));
+           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
 
-           items = items.merge(enter);
-           wrap.selectAll('.preset-input-access').on('change', change).on('blur', change);
-         }
+           selection.selectAll('.restriction-via-way-input').property('value', _maxViaWay).on('input', function () {
+             var val = select(this).property('value');
+             _maxViaWay = +val;
 
-         function change(d3_event, d) {
-           var tag = {};
-           var value = context.cleanTagValue(utilGetSetValue(select(this))); // don't override multiple values with blank string
+             _container.selectAll('.layer-osm .layer-turns *').remove();
 
-           if (!value && typeof _tags[d] !== 'string') return;
-           tag[d] = value || undefined;
-           dispatch.call('change', this, tag);
+             corePreferences('turn-restriction-via-way0', _maxViaWay);
+
+             _parent.call(restrictions);
+           });
+           selection.selectAll('.restriction-via-way-text').call(displayMaxVia(_maxViaWay));
          }
 
-         access.options = function (type) {
-           var options = ['no', 'permissive', 'private', 'permit', 'destination'];
+         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);
 
-           if (type !== 'access') {
-             options.unshift('yes');
-             options.push('designated');
+           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 (type === 'bicycle') {
-               options.push('dismount');
-             }
+           var extent = geoExtent();
+
+           for (var i = 0; i < _intersection.vertices.length; i++) {
+             extent._extend(_intersection.vertices[i].extent());
            }
 
-           return options.map(function (option) {
-             return {
-               title: field.t('options.' + option + '.description'),
-               value: option
-             };
-           });
-         };
+           var padTop = 35; // reserve top space for hint text
+           // If this is a large intersection, adjust zoom to fit extent
 
-         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'
+           if (_intersection.vertices.length > 1) {
+             var hPadding = Math.min(160, Math.max(110, d[0] * 0.4));
+             var vPadding = 160;
+             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] - hPadding);
+             var vFactor = (br[1] - tl[1]) / (d[1] - vPadding - padTop);
+             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));
            }
-         };
 
-         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 extentCenter = projection(extent.center());
+           extentCenter[1] = extentCenter[1] - padTop / 2;
+           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);
 
-             if (d === 'access') {
-               return 'yes';
-             }
+           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.
 
-             if (tags.access && typeof tags.access === 'string') {
-               return tags.access;
-             }
 
-             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 (_fromWayID && !vgraph.hasEntity(_fromWayID)) {
+             _fromWayID = null;
+             _oldTurns = null;
+           }
 
-                 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];
-                 }
-               }
+           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 (_fromWayID) {
+             way = vgraph.entity(_fromWayID);
+             surface.selectAll('.' + _fromWayID).classed('selected', true).classed('related', true);
+           }
+
+           document.addEventListener('resizeWindow', function () {
+             utilSetDimensions(_container, null);
+             redraw(1);
+           }, false);
+           updateHints(null);
+
+           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 (entity) {
+               datum = entity;
              }
 
-             return field.placeholder();
-           });
-         };
+             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);
 
-         access.focus = function () {
-           items.selectAll('.preset-input-access').node().focus();
-         };
+               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
 
-         return utilRebind(access, dispatch, 'on');
-       }
+                 datumOnly.only = true; // but change this property
 
-       function uiFieldAddress(field, context) {
-         var dispatch = dispatch$8('change');
+                 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.
 
-         var _selection = select(null);
+                 turns = _intersection.turns(_fromWayID, 2);
+                 extraActions = [];
+                 _oldTurns = [];
 
-         var _wrap = select(null);
+                 for (i = 0; i < turns.length; i++) {
+                   var turn = turns[i];
+                   if (seen[turn.restrictionID]) continue; // avoid deleting the turn twice (#4968, #4928)
 
-         var addrField = _mainPresetIndex.field('address'); // needed for placeholder strings
+                   if (turn.direct && turn.path[1] === datum.path[1]) {
+                     seen[turns[i].restrictionID] = true;
+                     turn.restrictionType = osmInferRestriction(vgraph, turn, projection);
 
-         var _entityIDs = [];
+                     _oldTurns.push(turn);
 
-         var _tags;
+                     extraActions.push(actionUnrestrictTurn(turn));
+                   }
+                 }
 
-         var _countryCode;
+                 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 _addressFormats = [{
-           format: [['housenumber', 'street'], ['city', 'postcode']]
-         }];
-         _mainFileFetcher.get('address_formats').then(function (d) {
-           _addressFormats = d;
+                 for (i = 0; i < turns.length; i++) {
+                   if (turns[i].key !== datum.key) {
+                     extraActions.push(actionRestrictTurn(turns[i], turns[i].restrictionType));
+                   }
+                 }
 
-           if (!_selection.empty()) {
-             _selection.call(address);
-           }
-         })["catch"](function () {
-           /* ignore */
-         });
+                 _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')]);
+               }
 
-         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');
+               context.perform.apply(context, actions); // At this point the datum will be changed, but will have same key..
+               // Refresh it and update the help..
 
-           function isAddressable(d) {
-             return d.tags.highway && d.tags.name && d.type === 'way';
+               var s = surface.selectAll('.' + datum.key);
+               datum = s.empty() ? null : s.datum();
+               updateHints(datum);
+             } else {
+               _fromWayID = null;
+               _oldTurns = null;
+               redraw();
+             }
            }
-         }
 
-         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');
+           function mouseover(d3_event) {
+             var datum = d3_event.target.__data__;
+             updateHints(datum);
+           }
 
-           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;
+           _lastXPos = _lastXPos || sdims[0];
+
+           function redraw(minChange) {
+             var xPos = -1;
+
+             if (minChange) {
+               xPos = utilGetDimensions(context.container().select('.sidebar'))[0];
              }
 
-             if (d.tags['addr:city']) return true;
-             return false;
+             if (!minChange || minChange && Math.abs(xPos - _lastXPos) >= minChange) {
+               if (context.hasEntity(_vertexID)) {
+                 _lastXPos = xPos;
+
+                 _container.call(renderViewer);
+               }
+             }
            }
-         }
 
-         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 highlightPathsFrom(wayID) {
+             surface.selectAll('.related').classed('related', false).classed('allow', false).classed('restrict', false).classed('only', false);
+             surface.selectAll('.' + wayID).classed('related', true);
 
-         function updateForCountryCode() {
-           if (!_countryCode) return;
-           var addressFormat;
+             if (wayID) {
+               var turns = _intersection.turns(wayID, _maxViaWay);
 
-           for (var i = 0; i < _addressFormats.length; i++) {
-             var format = _addressFormats[i];
+               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 (!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
+                 if (turn.only || turns.length === 1) {
+                   if (turn.via.ways) {
+                     ids = ids.concat(turn.via.ways);
+                   }
+                 } else if (turn.to.way === wayID) {
+                   continue;
+                 }
 
-               break;
+                 surface.selectAll(utilEntitySelector(ids)).classed('related', true).classed('allow', klass === 'allow').classed('restrict', klass === 'restrict').classed('only', klass === 'only');
+               }
              }
            }
 
-           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
-           };
+           function updateHints(datum) {
+             var help = _container.selectAll('.restriction-help').html('');
 
-           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
+             var placeholders = {};
+             ['from', 'via', 'to'].forEach(function (k) {
+               placeholders[k] = {
+                 html: '<span class="qualifier">' + _t('restriction.help.' + k) + '</span>'
                };
              });
-           }
+             var entity = datum && datum.properties && datum.properties.entity;
 
-           var rows = _wrap.selectAll('.addr-row').data(addressFormat.format, function (d) {
-             return d.toString();
-           });
+             if (entity) {
+               datum = entity;
+             }
 
-           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 + '%';
-           });
+             if (_fromWayID) {
+               way = vgraph.entity(_fromWayID);
+               surface.selectAll('.' + _fromWayID).classed('selected', true).classed('related', true);
+             } // Hovering a way
 
-           function addDropdown(d) {
-             if (dropdowns.indexOf(d.id) === -1) return; // not a dropdown
 
-             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 (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;
 
-           _wrap.selectAll('input').on('blur', change()).on('change', change());
+               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: ''
+                 });
+               }
 
-           _wrap.selectAll('input:not(.combobox-input)').on('input', change(true));
+               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)
+               }));
 
-           if (_tags) updateTags(_tags);
-         }
+               if (datum.via.ways && datum.via.ways.length) {
+                 var names = [];
 
-         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();
+                 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 (extent) {
-             var countryCode;
+                   if (!prev || curr !== prev) {
+                     // collapse identical names
+                     names.push(curr);
+                   }
+                 }
 
-             if (context.inIntro()) {
-               // localize the address format for the walkthrough
-               countryCode = _t('intro.graph.countrycode');
+                 help.append('div') // "VIA {viaNames}"
+                 .html(_t.html('restriction.help.via_names', {
+                   via: placeholders.via,
+                   viaNames: names.join(', ')
+                 }));
+               }
+
+               if (!indirect) {
+                 help.append('div') // Click for "No Right Turn"
+                 .html(_t.html('restriction.help.toggle', {
+                   turn: {
+                     html: nextText.trim()
+                   }
+                 }));
+               }
+
+               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 {
-               var center = extent.center();
-               countryCode = iso1A2Code(center);
-             }
+               highlightPathsFrom(null);
 
-             if (countryCode) {
-               _countryCode = countryCode.toLowerCase();
-               updateForCountryCode();
+               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
+                 }));
+               }
              }
            }
          }
 
-         function change(onInput) {
-           return function () {
-             var tags = {};
-
-             _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 (Array.isArray(_tags[key]) && !value) return;
-               tags[key] = value || undefined;
-             });
+         function displayMaxDistance(maxDist) {
+           return function (selection) {
+             var isImperial = !_mainLocalizer.usesMetric();
+             var opts;
+
+             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
+                 })
+               };
+             }
 
-             dispatch.call('change', this, tags, onInput);
+             return selection.html('').call(_t.append('restriction.controls.distance_up_to', opts));
            };
          }
 
-         function updatePlaceholder(inputSelection) {
-           return inputSelection.attr('placeholder', function (subfield) {
-             if (_tags && Array.isArray(_tags[field.key + ':' + subfield.id])) {
-               return _t('inspector.multiple_values');
-             }
-
-             if (_countryCode) {
-               var localkey = subfield.id + '!' + _countryCode;
-               var tkey = addrField.hasTextForStringId('placeholders.' + localkey) ? localkey : subfield.id;
-               return addrField.t('placeholders.' + tkey);
-             }
-           });
+         function displayMaxVia(maxVia) {
+           return function (selection) {
+             selection = selection.html('');
+             return maxVia === 0 ? selection.call(_t.append('restriction.controls.via_node_only')) : maxVia === 1 ? selection.call(_t.append('restriction.controls.via_up_to_one')) : selection.call(_t.append('restriction.controls.via_up_to_two'));
+           };
          }
 
-         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 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 combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
-         }
+         restrictions.entityIDs = function (val) {
+           _intersection = null;
+           _fromWayID = null;
+           _oldTurns = null;
+           _vertexID = val[0];
+         };
 
-         address.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return address;
+         restrictions.tags = function () {};
+
+         restrictions.focus = function () {};
+
+         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);
          };
 
-         address.tags = function (tags) {
+         return utilRebind(restrictions, dispatch, 'on');
+       }
+       uiFieldRestrictions.supportsMultiselection = false;
+
+       function uiFieldTextarea(field, context) {
+         var dispatch = dispatch$8('change');
+         var input = select(null);
+
+         var _tags;
+
+         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);
+         }
+
+         function change(onInput) {
+           return function () {
+             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;
+             var t = {};
+             t[field.key] = val || undefined;
+             dispatch.call('change', this, t, onInput);
+           };
+         }
+
+         textarea.tags = function (tags) {
            _tags = tags;
-           updateTags(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);
          };
 
-         address.focus = function () {
-           var node = _wrap.selectAll('input').node();
-
-           if (node) node.focus();
+         textarea.focus = function () {
+           input.node().focus();
          };
 
-         return utilRebind(address, dispatch, 'on');
+         return utilRebind(textarea, dispatch, 'on');
        }
 
-       function uiFieldCycleway(field, context) {
+       function uiFieldWikidata(field, context) {
+         var wikidata = services.wikidata;
          var dispatch = dispatch$8('change');
-         var items = select(null);
-         var wrap = select(null);
 
-         var _tags;
+         var _selection = select(null);
 
-         function cycleway(selection) {
-           function stripcolon(s) {
-             return s.replace(':', '');
-           }
+         var _searchInput = select(null);
 
-           wrap = selection.selectAll('.form-field-input-wrap').data([0]);
+         var _qid = null;
+         var _wikidataEntity = null;
+         var _wikiURL = '';
+         var _entityIDs = [];
+
+         var _wikipediaKey = field.keys && field.keys.find(function (key) {
+           return key.includes('wikipedia');
+         }),
+             _hintKey = field.key === 'wikidata' ? 'name' : field.key.split(':')[0];
+
+         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 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 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
+
            var enter = items.enter().append('li').attr('class', function (d) {
-             return 'labeled-input preset-cycleway-' + stripcolon(d);
+             return 'labeled-input preset-wikidata-' + 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('span').attr('class', 'label').html(function (d) {
+             return _t.html('wikidata.' + 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)));
+           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');
            });
-           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
-
-           if (!newValue && (Array.isArray(_tags.cycleway) || Array.isArray(_tags[key]))) return;
+         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]);
 
-           if (newValue === 'none' || newValue === '') {
-             newValue = undefined;
+               if (entity.tags[_hintKey]) {
+                 q = entity.tags[_hintKey];
+                 break;
+               }
+             }
            }
 
-           var otherKey = key === 'cycleway:left' ? 'cycleway:right' : 'cycleway:left';
-           var otherValue = typeof _tags.cycleway === 'string' ? _tags.cycleway : _tags[otherKey];
+           wikidata.itemsForSearchQuery(q, function (err, data) {
+             if (err) return;
 
-           if (otherValue && Array.isArray(otherValue)) {
-             // we must always have an explicit value for comparison
-             otherValue = otherValue[0];
-           }
+             for (var i in data) {
+               data[i].value = data[i].label + ' (' + data[i].id + ')';
+               data[i].title = data[i].description;
+             }
 
-           if (otherValue === 'none' || otherValue === '') {
-             otherValue = undefined;
-           }
+             if (callback) callback(data);
+           });
+         }
 
-           var tag = {}; // If the left and right tags match, use the cycleway tag to tag both
-           // sides the same way
+         function change() {
+           var syncTags = {};
+           syncTags[field.key] = _qid;
+           dispatch.call('change', this, syncTags); // attempt asynchronous update of wikidata tag..
 
-           if (newValue === otherValue) {
-             tag = {
-               cycleway: newValue,
-               'cycleway:left': undefined,
-               'cycleway:right': undefined
-             };
-           } else {
-             // Always set both left and right as changing one can affect the other
-             tag = {
-               cycleway: undefined
-             };
-             tag[key] = newValue;
-             tag[otherKey] = otherValue;
-           }
+           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.
 
-           dispatch.call('change', this, tag);
-         }
+             if (context.graph() !== initGraph) return;
+             if (!entity.sitelinks) return;
+             var langs = wikidata.languagesToQuery(); // use the label and description languages as fallbacks
 
-         cycleway.options = function () {
-           return field.options.map(function (option) {
-             return {
-               title: field.t('options.' + option + '.description'),
-               value: option
-             };
-           });
-         };
+             ['labels', 'descriptions'].forEach(function (key) {
+               if (!entity[key]) return;
+               var valueLangs = Object.keys(entity[key]);
+               if (valueLangs.length === 0) return;
+               var valueLang = valueLangs[0];
 
-         cycleway.tags = function (tags) {
-           _tags = tags; // If cycleway is set, use that instead of individual values
+               if (langs.indexOf(valueLang) === -1) {
+                 langs.push(valueLang);
+               }
+             });
+             var newWikipediaValue;
 
-           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 = [];
+             if (_wikipediaKey) {
+               var foundPreferred;
 
-               if (Array.isArray(tags.cycleway)) {
-                 vals = vals.concat(tags.cycleway);
+               for (var i in langs) {
+                 var lang = langs[i];
+                 var siteID = lang.replace('-', '_') + 'wiki';
+
+                 if (entity.sitelinks[siteID]) {
+                   foundPreferred = true;
+                   newWikipediaValue = lang + ':' + entity.sitelinks[siteID].title; // use the first match
+
+                   break;
+                 }
                }
 
-               if (Array.isArray(tags[d])) {
-                 vals = vals.concat(tags[d]);
+               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 {
+                   var wikiLang = wikiSiteKeys[0].slice(0, -4).replace('_', '-');
+                   var wikiTitle = entity.sitelinks[wikiSiteKeys[0]].title;
+                   newWikipediaValue = wikiLang + ':' + wikiTitle;
+                 }
                }
-
-               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');
+             if (newWikipediaValue) {
+               newWikipediaValue = context.cleanTagValue(newWikipediaValue);
              }
 
-             return field.placeholder();
-           }).classed('mixed', function (d) {
-             return Array.isArray(tags.cycleway) || Array.isArray(tags[d]);
-           });
-         };
+             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
 
-         cycleway.focus = function () {
-           var node = wrap.selectAll('input').node();
-           if (node) node.focus();
-         };
+               if (newWikipediaValue === null) {
+                 if (!currTags[_wikipediaKey]) return null;
+                 delete currTags[_wikipediaKey];
+               } else {
+                 currTags[_wikipediaKey] = newWikipediaValue;
+               }
 
-         return utilRebind(cycleway, dispatch, 'on');
-       }
+               return actionChangeTags(entityID, currTags);
+             }).filter(Boolean);
+             if (!actions.length) return; // Coalesce the update of wikidata tag into the previous tag change
 
-       function uiFieldLanes(field, context) {
-         var dispatch = dispatch$8('change');
-         var LANE_WIDTH = 40;
-         var LANE_HEIGHT = 200;
-         var _entityIDs = [];
+             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
+           });
+         }
 
-         function lanes(selection) {
-           var lanesData = context.entity(_entityIDs[0]).lanes();
+         function setLabelForEntity() {
+           var label = '';
 
-           if (!context.container().select('.inspector-wrap.inspector-hidden').empty() || !selection.node().parentNode) {
-             selection.call(lanes.off);
-             return;
+           if (_wikidataEntity) {
+             label = entityPropertyForDisplay(_wikidataEntity, 'labels');
+
+             if (label.length === 0) {
+               label = _wikidataEntity.id.toString();
+             }
            }
 
-           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';
-           });
+           utilGetSetValue(_searchInput, label);
          }
 
-         lanes.entityIDs = function (val) {
-           _entityIDs = val;
-         };
-
-         lanes.tags = function () {};
+         wiki.tags = function (tags) {
+           var isMixed = Array.isArray(tags[field.key]);
 
-         lanes.focus = function () {};
+           _searchInput.attr('title', isMixed ? tags[field.key].filter(Boolean).join('\n') : null).attr('placeholder', isMixed ? _t('inspector.multiple_values') : '').classed('mixed', isMixed);
 
-         lanes.off = function () {};
+           _qid = typeof tags[field.key] === 'string' && tags[field.key] || '';
 
-         return utilRebind(lanes, dispatch, 'on');
-       }
-       uiFieldLanes.supportsMultiselection = false;
+           if (!/^Q[0-9]*$/.test(_qid)) {
+             // not a proper QID
+             unrecognized();
+             return;
+           } // QID value in correct format
 
-       var _languagesArray = [];
-       function uiFieldLocalized(field, context) {
-         var dispatch = dispatch$8('change', 'input');
-         var wikipedia = services.wikipedia;
-         var input = select(null);
-         var localizedInputs = select(null);
 
-         var _countryCode;
+           _wikiURL = 'https://wikidata.org/wiki/' + _qid;
+           wikidata.entityByQID(_qid, function (err, entity) {
+             if (err) {
+               unrecognized();
+               return;
+             }
 
-         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.
+             _wikidataEntity = entity;
+             setLabelForEntity();
+             var description = entityPropertyForDisplay(entity, 'descriptions');
 
+             _selection.select('button.wiki-link').classed('disabled', false);
 
-         _mainFileFetcher.get('languages').then(loadLanguagesArray)["catch"](function () {
-           /* ignore */
-         });
-         var _territoryLanguages = {};
-         _mainFileFetcher.get('territory_languages').then(function (d) {
-           _territoryLanguages = d;
-         })["catch"](function () {
-           /* ignore */
-         }); // reuse these combos
+             _selection.select('.preset-wikidata-description').style('display', function () {
+               return description.length > 0 ? 'flex' : 'none';
+             }).select('input').attr('value', description);
 
-         var langCombo = uiCombobox(context, 'localized-lang').fetcher(fetchLanguages).minItems(0);
+             _selection.select('.preset-wikidata-identifier').style('display', function () {
+               return entity.id ? 'flex' : 'none';
+             }).select('input').attr('value', entity.id);
+           }); // not a proper QID
 
-         var _selection = select(null);
+           function unrecognized() {
+             _wikidataEntity = null;
+             setLabelForEntity();
 
-         var _multilingual = [];
+             _selection.select('.preset-wikidata-description').style('display', 'none');
 
-         var _buttonTip = uiTooltip().title(_t.html('translate.translate')).placement('left');
+             _selection.select('.preset-wikidata-identifier').style('display', 'none');
 
-         var _wikiTitles;
+             _selection.select('button.wiki-link').classed('disabled', true);
 
-         var _entityIDs = [];
+             if (_qid && _qid !== '') {
+               _wikiURL = 'https://wikidata.org/wiki/Special:Search?search=' + _qid;
+             } else {
+               _wikiURL = '';
+             }
+           }
+         };
 
-         function loadLanguagesArray(dataLanguages) {
-           if (_languagesArray.length !== 0) return; // some conversion is needed to ensure correct OSM tags are used
+         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 replacements = {
-             sr: 'sr-Cyrl',
-             // in OSM, `sr` implies Cyrillic
-             'sr-Cyrl': false // `sr-Cyrl` isn't used in OSM
+           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
 
-           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)
-             });
-           }
+           return propObj[langKeys[0]].value;
          }
 
-         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
-
-             if (entity.tags.wikidata) return true; // Assume the name has already been confirmed if its source has been researched
+         wiki.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return wiki;
+         };
 
-             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`
+         wiki.focus = function () {
+           _searchInput.node().focus();
+         };
 
-             var preset = _mainPresetIndex.match(entity, context.graph());
+         return utilRebind(wiki, dispatch, 'on');
+       }
 
-             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);
-             }
+       function uiFieldWikipedia(field, context) {
+         var _arguments = arguments;
+         var dispatch = dispatch$8('change');
+         var wikipedia = services.wikipedia;
+         var wikidata = services.wikidata;
 
-             return false;
-           });
+         var _langInput = select(null);
 
-           field.locked(isLocked);
-         } // update _multilingual, maintaining the existing order
+         var _titleInput = select(null);
 
+         var _wikiURL = '';
 
-         function calcMultilingual(tags) {
-           var existingLangsOrdered = _multilingual.map(function (item) {
-             return item.lang;
-           });
+         var _entityIDs;
 
-           var existingLangs = new Set(existingLangsOrdered.filter(Boolean));
+         var _tags;
 
-           for (var k in tags) {
-             var m = k.match(/^(.*):(.*)$/);
+         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 (m && m[1] === field.key && m[2]) {
-               var item = {
-                 lang: m[2],
-                 value: tags[k]
-               };
+             for (var i in _entityIDs) {
+               var entity = context.hasEntity(_entityIDs[i]);
 
-               if (existingLangs.has(item.lang)) {
-                 // update the value
-                 _multilingual[existingLangsOrdered.indexOf(item.lang)].value = item.value;
-                 existingLangs["delete"](item.lang);
-               } else {
-                 _multilingual.push(item);
+               if (entity.tags.name) {
+                 value = entity.tags.name;
+                 break;
                }
              }
-           } // Don't remove items based on deleted tags, since this makes the UI
-           // disappear unexpectedly when clearing values - #8164
-
+           }
 
-           _multilingual.forEach(function (item) {
-             if (item.lang && existingLangs.has(item.lang)) {
-               item.value = '';
-             }
+           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 localized(selection) {
-           _selection = selection;
-           calcLocked();
-           var isLocked = field.locked();
-           var wrap = selection.selectAll('.form-field-input-wrap').data([0]); // enter/update
+         });
 
-           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 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);
 
-           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);
+           _langInput.on('blur', changeLang).on('change', changeLang);
 
-           if (_tags && !_multilingual.length) {
-             calcMultilingual(_tags);
-           }
+           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);
 
-           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);
+           _titleInput.on('blur', function () {
+             change(true);
+           }).on('change', function () {
+             change(false);
+           });
 
-           function addNew(d3_event) {
+           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 (field.locked()) return;
-             var defaultLang = _mainLocalizer.languageCode().toLowerCase();
+             if (_wikiURL) window.open(_wikiURL, '_blank');
+           });
+         }
 
-             var langExists = _multilingual.find(function (datum) {
-               return datum.lang === defaultLang;
-             });
+         function defaultLanguageInfo(skipEnglishFallback) {
+           var langCode = _mainLocalizer.languageCode().toLowerCase();
 
-             var isLangEn = defaultLang.indexOf('en') > -1;
+           for (var i in _dataWikipedia) {
+             var d = _dataWikipedia[i]; // default to the language of iD's current locale
 
-             if (isLangEn || langExists) {
-               defaultLang = '';
-               langExists = _multilingual.find(function (datum) {
-                 return datum.lang === defaultLang;
-               });
-             }
+             if (d[2] === langCode) return d;
+           } // fallback to English
 
-             if (!langExists) {
-               // prepend the value so it appears at the top
-               _multilingual.unshift({
-                 lang: defaultLang,
-                 value: ''
-               });
 
-               localizedInputs.call(renderMultilingual);
-             }
-           }
+           return skipEnglishFallback ? ['', '', ''] : ['English', 'English', 'en'];
+         }
 
-           function change(onInput) {
-             return function (d3_event) {
-               if (field.locked()) {
-                 d3_event.preventDefault();
-                 return;
-               }
+         function language(skipEnglishFallback) {
+           var value = utilGetSetValue(_langInput).toLowerCase();
 
-               var val = utilGetSetValue(select(this));
-               if (!onInput) val = context.cleanTagValue(val); // don't override multiple values with blank string
+           for (var i in _dataWikipedia) {
+             var d = _dataWikipedia[i]; // return the language already set in the UI, if supported
 
-               if (!val && Array.isArray(_tags[field.key])) return;
-               var t = {};
-               t[field.key] = val || undefined;
-               dispatch.call('change', this, t, onInput);
-             };
-           }
-         }
+             if (d[0].toLowerCase() === value || d[1].toLowerCase() === value || d[2] === value) return d;
+           } // fallback to English
 
-         function key(lang) {
-           return field.key + ':' + lang;
+
+           return defaultLanguageInfo(skipEnglishFallback);
          }
 
-         function changeLang(d3_event, d) {
-           var tags = {}; // make sure unrecognized suffixes are lowercase - #7156
+         function changeLang() {
+           utilGetSetValue(_langInput, language()[1]);
+           change(true);
+         }
 
-           var lang = utilGetSetValue(select(this)).toLowerCase();
+         function change(skipWikidata) {
+           var value = utilGetSetValue(_titleInput);
+           var m = value.match(/https?:\/\/([-a-z]+)\.wikipedia\.org\/(?:wiki|\1-[-a-z]+)\/([^#]+)(?:#(.+))?/);
 
-           var language = _languagesArray.find(function (d) {
-             return d.label.toLowerCase() === lang || d.localName && d.localName.toLowerCase() === lang || d.nativeName && d.nativeName.toLowerCase() === lang;
+           var langInfo = m && _dataWikipedia.find(function (d) {
+             return m[1] === d[2];
            });
 
-           if (language) lang = language.code;
+           var syncTags = {};
 
-           if (d.lang && d.lang !== lang) {
-             tags[key(d.lang)] = undefined;
-           }
+           if (langInfo) {
+             var nativeLangName = langInfo[1]; // Normalize title http://www.mediawiki.org/wiki/API:Query#Title_normalization
 
-           var newKey = lang && context.cleanTagKey(key(lang));
-           var value = utilGetSetValue(select(this.parentNode).selectAll('.localized-value'));
+             value = decodeURIComponent(m[2]).replace(/_/g, ' ');
 
-           if (newKey && value) {
-             tags[newKey] = value;
-           } else if (newKey && _wikiTitles && _wikiTitles[d.lang]) {
-             tags[newKey] = _wikiTitles[d.lang];
-           }
+             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) {
 
-           d.lang = lang;
-           dispatch.call('change', this, tags);
-         }
+               anchor = decodeURIComponent(m[3]); // }
 
-         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
+               value += '#' + anchor.replace(/_/g, ' ');
+             }
 
-           if (!value && Array.isArray(d.value)) return;
-           var t = {};
-           t[key(d.lang)] = value;
-           d.value = value;
-           dispatch.call('change', this, t);
-         }
+             value = value.slice(0, 1).toUpperCase() + value.slice(1);
+             utilGetSetValue(_langInput, nativeLangName);
+             utilGetSetValue(_titleInput, value);
+           }
 
-         function fetchLanguages(value, cb) {
-           var v = value.toLowerCase(); // show the user's language first
+           if (value) {
+             syncTags.wikipedia = context.cleanTagValue(language()[2] + ':' + value);
+           } else {
+             syncTags.wikipedia = undefined;
+           }
 
-           var langCodes = [_mainLocalizer.localeCode(), _mainLocalizer.languageCode()];
+           dispatch.call('change', this, syncTags);
+           if (skipWikidata || !value || !language()[2]) return; // attempt asynchronous update of wikidata tag..
 
-           if (_countryCode && _territoryLanguages[_countryCode]) {
-             langCodes = langCodes.concat(_territoryLanguages[_countryCode]);
-           }
+           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 langItems = [];
-           langCodes.forEach(function (code) {
-             var langItem = _languagesArray.find(function (item) {
-               return item.code === code;
+             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
 
-             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
-             };
-           }));
-         }
+               if (currTags.wikidata !== value) {
+                 currTags.wikidata = value;
+                 return actionChangeTags(entityID, currTags);
+               }
 
-         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
+               return null;
+             }).filter(Boolean);
+             if (!actions.length) return; // Coalesce the update of wikidata tag into the previous tag change
 
-               _multilingual.splice(_multilingual.indexOf(d), 1);
+             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
+           });
+         }
 
-               var langKey = d.lang && key(d.lang);
+         wiki.tags = function (tags) {
+           _tags = tags;
+           updateForTags(tags);
+         };
 
-               if (langKey && langKey in _tags) {
-                 delete _tags[langKey]; // remove from entity tags
+         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`
 
-                 var t = {};
-                 t[langKey] = undefined;
-                 dispatch.call('change', this, t);
-                 return;
-               }
+           var m = value.match(/([^:]+):([^#]+)(?:#(.+))?/);
+           var tagLang = m && m[1];
+           var tagArticleTitle = m && m[2];
+           var anchor = m && m[3];
 
-               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
+           var tagLangInfo = tagLang && _dataWikipedia.find(function (d) {
+             return tagLang === d[2];
+           }); // value in correct format
 
-           entries.classed('present', true);
-           utilGetSetValue(entries.select('.localized-lang'), function (d) {
-             var langItem = _languagesArray.find(function (item) {
-               return item.code === d.lang;
-             });
 
-             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);
-           });
-         }
+           if (tagLangInfo) {
+             var nativeLangName = tagLangInfo[1];
+             utilGetSetValue(_langInput, nativeLangName);
+             utilGetSetValue(_titleInput, tagArticleTitle + (anchor ? '#' + anchor : ''));
 
-         localized.tags = function (tags) {
-           _tags = tags; // Fetch translations from wikipedia
+             if (anchor) {
+               try {
+                 // Best-effort `anchorencode:` implementation
+                 anchor = encodeURIComponent(anchor.replace(/ /g, '_')).replace(/%/g, '.');
+               } catch (e) {
+                 anchor = anchor.replace(/ /g, '_');
+               }
+             }
 
-           if (typeof tags.wikipedia === 'string' && !_wikiTitles) {
-             _wikiTitles = {};
-             var wm = tags.wikipedia.match(/([^:]+):(.+)/);
+             _wikiURL = 'https://' + tagLang + '.wikipedia.org/wiki/' + tagArticleTitle.replace(/ /g, '_') + (anchor ? '#' + anchor : ''); // unrecognized value format
+           } else {
+             utilGetSetValue(_titleInput, value);
 
-             if (wm && wm[0] && wm[1]) {
-               wikipedia.translations(wm[1], wm[2], function (err, d) {
-                 if (err || !d) return;
-                 _wikiTitles = d;
-               });
+             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 = '';
              }
            }
+         }
 
-           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);
+         wiki.entityIDs = function (val) {
+           if (!_arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return wiki;
          };
 
-         localized.focus = function () {
-           input.node().focus();
+         wiki.focus = function () {
+           _titleInput.node().focus();
          };
 
-         localized.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           _multilingual = [];
-           loadCountryCode();
-           return localized;
-         };
+         return utilRebind(wiki, dispatch, 'on');
+       }
+       uiFieldWikipedia.supportsMultiselection = false;
 
-         function loadCountryCode() {
-           var extent = combinedEntityExtent();
-           var countryCode = extent && iso1A2Code(extent.center());
-           _countryCode = countryCode && countryCode.toLowerCase();
-         }
+       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 combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
+       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
+
+         field.domId = utilUniqueDomId('form-field-' + field.safeid);
+         var _show = options.show;
+         var _state = '';
+         var _tags = {};
+
+         var _entityExtent;
+
+         if (entityIDs && entityIDs.length) {
+           _entityExtent = entityIDs.reduce(function (extent, entityID) {
+             var entity = context.graph().entity(entityID);
+             return extent.extend(entity.extent(context.graph()));
+           }, geoExtent());
          }
 
-         return utilRebind(localized, dispatch, 'on');
-       }
+         var _locked = false;
 
-       function uiFieldRoadspeed(field, context) {
-         var dispatch = dispatch$8('change');
-         var unitInput = select(null);
-         var input = select(null);
-         var _entityIDs = [];
+         var _lockedTip = uiTooltip().title(_t.html('inspector.lock.suggestion', {
+           label: field.label
+         })).placement('bottom');
 
-         var _tags;
+         field.keys = field.keys || [field.key]; // only create the fields that are actually being shown
 
-         var _isImperial;
+         if (_show && !field.impl) {
+           createField();
+         } // Creates the field.. This is done lazily,
+         // once we know that the field will be shown.
 
-         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 createField() {
+           field.impl = uiFields[field.type](field, context).on('change', function (t, onInput) {
+             dispatch.call('change', field, t, onInput);
+           });
 
-           function changeUnits() {
-             _isImperial = utilGetSetValue(unitInput) === 'mph';
-             utilGetSetValue(unitInput, _isImperial ? 'mph' : 'km/h');
-             setUnitSuggestions();
-             change();
+           if (entityIDs) {
+             field.entityIDs = entityIDs; // if this field cares about the entities, pass them along
+
+             if (field.impl.entityIDs) {
+               field.impl.entityIDs(entityIDs);
+             }
            }
          }
 
-         function setUnitSuggestions() {
-           speedCombo.data((_isImperial ? imperialValues : metricValues).map(comboValues));
-           utilGetSetValue(unitInput, _isImperial ? 'mph' : 'km/h');
+         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 comboValues(d) {
-           return {
-             value: d.toString(),
-             title: d.toString()
-           };
-         }
+         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 change() {
-           var tag = {};
-           var value = utilGetSetValue(input).trim(); // don't override multiple values with blank string
+               return false;
+             }
 
-           if (!value && Array.isArray(_tags[field.key])) return;
+             return _tags[key] !== undefined;
+           });
+         }
 
-           if (!value) {
-             tag[field.key] = undefined;
-           } else if (isNaN(value) || !_isImperial) {
-             tag[field.key] = context.cleanTagValue(value);
-           } else {
-             tag[field.key] = context.cleanTagValue(value + ' mph');
-           }
+         function revert(d3_event, d) {
+           d3_event.stopPropagation();
+           d3_event.preventDefault();
+           if (!entityIDs || _locked) return;
+           dispatch.call('revert', d, d.keys);
+         }
 
-           dispatch.call('change', this, tag);
+         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.call('change', d, t);
          }
 
-         roadspeed.tags = function (tags) {
-           _tags = tags;
-           var value = tags[field.key];
-           var isMixed = Array.isArray(value);
+         field.render = function (selection) {
+           var container = selection.selectAll('.form-field').data([field]); // Enter
 
-           if (!isMixed) {
-             if (value && value.indexOf('mph') >= 0) {
-               value = parseInt(value, 10).toString();
-               _isImperial = true;
-             } else if (value) {
-               _isImperial = false;
+           var enter = container.enter().append('div').attr('class', function (d) {
+             return 'form-field form-field-' + d.safeid;
+           }).classed('nowrap', !options.wrap);
+
+           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');
+
+             if (options.remove) {
+               labelEnter.append('button').attr('class', 'remove-icon').attr('title', _t('icons.remove')).call(svgIcon('#iD-operation-delete'));
              }
-           }
 
-           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);
-         };
+             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
 
-         roadspeed.focus = function () {
-           input.node().focus();
-         };
 
-         roadspeed.entityIDs = function (val) {
-           _entityIDs = val;
-         };
+           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 combinedEntityExtent() {
-           return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
-         }
+             if (!d.impl) {
+               createField();
+             }
 
-         return utilRebind(roadspeed, dispatch, 'on');
-       }
+             var reference, help; // instantiate field help
 
-       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
+             if (options.wrap && field.type === 'restrictions') {
+               help = uiFieldHelp(context, 'restrictions');
+             } // instantiate tag reference
 
-         var typeField;
-         var layerField;
-         var _oldType = {};
-         var _entityIDs = [];
 
-         function selectedKey() {
-           var node = wrap.selectAll('.form-field-input-radio label.active input');
-           return !node.empty() && node.datum();
-         }
+             if (options.wrap && options.info) {
+               var referenceKey = d.key || '';
 
-         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);
-         }
+               if (d.type === 'multiCombo') {
+                 // lookup key without the trailing ':'
+                 referenceKey = referenceKey.replace(/:$/, '');
+               }
 
-         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
+               reference = uiTagReference(d.reference || {
+                 key: referenceKey
+               });
 
-           if (type) {
-             if (!typeField || typeField.id !== selected) {
-               typeField = uiField(context, type, _entityIDs, {
-                 wrap: false
-               }).on('change', changeType);
+               if (_state === 'hover') {
+                 reference.showing(false);
+               }
              }
 
-             typeField.tags(tags);
-           } else {
-             typeField = null;
-           }
+             selection.call(d.impl); // add field help components
 
-           var typeItem = list.selectAll('.structure-type-item').data(typeField ? [typeField] : [], function (d) {
-             return d.id;
-           }); // Exit
+             if (help) {
+               selection.call(help.body).select('.field-label').call(help.button);
+             } // add tag reference components
 
-           typeItem.exit().remove(); // Enter
 
-           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
+             if (reference) {
+               selection.call(reference.body).select('.field-label').call(reference.button);
+             }
 
-           typeItem = typeItem.merge(typeEnter);
+             d.impl.tags(_tags);
+           });
+           container.classed('locked', _locked).classed('modified', isModified()).classed('present', tagsContainFieldKey()); // show a tip and lock icon if the field is locked
 
-           if (typeField) {
-             typeItem.selectAll('.structure-input-type-wrap').call(typeField.render);
-           } // Layer
+           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);
+         };
 
+         field.state = function (val) {
+           if (!arguments.length) return _state;
+           _state = val;
+           return field;
+         };
 
-           if (layer && showLayer) {
-             if (!layerField) {
-               layerField = uiField(context, layer, _entityIDs, {
-                 wrap: false
-               }).on('change', changeLayer);
-             }
+         field.tags = function (val) {
+           if (!arguments.length) return _tags;
+           _tags = val;
 
-             layerField.tags(tags);
-             field.keys = utilArrayUnion(field.keys, ['layer']);
-           } else {
-             layerField = null;
-             field.keys = field.keys.filter(function (k) {
-               return k !== 'layer';
-             });
-           }
+           if (tagsContainFieldKey() && !_show) {
+             // always show a field if it has a value to display
+             _show = true;
 
-           var layerItem = list.selectAll('.structure-layer-item').data(layerField ? [layerField] : []); // Exit
+             if (!field.impl) {
+               createField();
+             }
+           }
 
-           layerItem.exit().remove(); // Enter
+           return field;
+         };
 
-           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
+         field.locked = function (val) {
+           if (!arguments.length) return _locked;
+           _locked = val;
+           return field;
+         };
 
-           layerItem = layerItem.merge(layerEnter);
+         field.show = function () {
+           _show = true;
 
-           if (layerField) {
-             layerItem.selectAll('.structure-input-layer-wrap').call(layerField.render);
+           if (!field.impl) {
+             createField();
            }
-         }
 
-         function changeType(t, onInput) {
-           var key = selectedKey();
-           if (!key) return;
-           var val = t[key];
-
-           if (val !== 'no') {
-             _oldType[key] = val;
+           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
 
-           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
 
+         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
 
-             if (t.layer === undefined) {
-               if (key === 'bridge' && val !== 'no') {
-                 t.layer = '1';
-               }
 
-               if (key === 'tunnel' && val !== 'no' && val !== 'building_passage') {
-                 t.layer = '-1';
-               }
-             }
+         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;
+
+           if (entityIDs && _entityExtent && field.locationSetID) {
+             // is field allowed in this location?
+             var validLocations = _mainLocations.locationsAt(_entityExtent.center());
+             if (!validLocations[field.locationSetID]) return false;
            }
 
-           dispatch.call('change', this, t, onInput);
-         }
+           var prerequisiteTag = field.prerequisiteTag;
 
-         function changeLayer(t, onInput) {
-           if (t.layer === '0') {
-             t.layer = undefined;
-           }
+           if (entityIDs && !tagsContainFieldKey() && // ignore tagging prerequisites if a value is already present
+           prerequisiteTag) {
+             if (!entityIDs.every(function (entityID) {
+               var entity = context.graph().entity(entityID);
 
-           dispatch.call('change', this, t, onInput);
-         }
+               if (prerequisiteTag.key) {
+                 var value = entity.tags[prerequisiteTag.key];
+                 if (!value) return false;
 
-         function changeRadio() {
-           var t = {};
-           var activeKey;
+                 if (prerequisiteTag.valueNot) {
+                   return prerequisiteTag.valueNot !== value;
+                 }
 
-           if (field.key) {
-             t[field.key] = undefined;
-           }
+                 if (prerequisiteTag.value) {
+                   return prerequisiteTag.value === value;
+                 }
+               } else if (prerequisiteTag.keyNot) {
+                 if (entity.tags[prerequisiteTag.keyNot]) return false;
+               }
 
-           radios.each(function (d) {
-             var active = select(this).property('checked');
-             if (active) activeKey = d;
+               return true;
+             })) return false;
+           }
 
-             if (field.key) {
-               if (active) t[field.key] = d;
-             } else {
-               var val = _oldType[activeKey] || 'yes';
-               t[d] = active ? val : undefined;
-             }
-           });
+           return true;
+         };
 
-           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;
-             }
+         field.focus = function () {
+           if (field.impl) {
+             field.impl.focus();
            }
+         };
 
-           dispatch.call('change', this, t);
-         }
+         return utilRebind(field, dispatch, 'on');
+       }
 
-         radio.tags = function (tags) {
-           radios.property('checked', function (d) {
-             if (field.key) {
-               return tags[field.key] === d;
-             }
+       function uiFormFields(context) {
+         var moreCombo = uiCombobox(context, 'more-fields').minItems(1);
+         var _fieldsArr = [];
+         var _lastPlaceholder = '';
+         var _state = '';
+         var _klass = '';
 
-             return !!(typeof tags[d] === 'string' && tags[d].toLowerCase() !== 'no');
+         function formFields(selection) {
+           var allowedFields = _fieldsArr.filter(function (field) {
+             return field.isAllowed();
            });
 
-           function isMixed(d) {
-             if (field.key) {
-               return Array.isArray(tags[field.key]) && tags[field.key].includes(d);
-             }
-
-             return Array.isArray(tags[d]);
-           }
+           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
 
-           labels.classed('active', function (d) {
-             if (field.key) {
-               return Array.isArray(tags[field.key]) && tags[field.key].includes(d) || tags[field.key] === d;
-             }
+           var enter = fields.enter().append('div').attr('class', function (d) {
+             return 'wrap-form-field wrap-form-field-' + d.safeid;
+           }); // Update
 
-             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;
+           fields = fields.merge(enter);
+           fields.order().each(function (d) {
+             select(this).call(d.render);
            });
-           var selection = radios.filter(function () {
-             return this.checked;
+           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').call(_t.append('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
 
-           if (selection.empty()) {
-             placeholder.html(_t.html('inspector.none'));
-           } else {
-             placeholder.html(selection.attr('value'));
-             _oldType[selection.datum()] = tags[selection.datum()];
-           }
+             var field = d.field;
+             field.show();
+             selection.call(formFields); // rerender
 
-           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';
-             }
+             field.focus();
+           })); // avoid updating placeholder excessively (triggers style recalc)
 
-             wrap.call(structureExtras, tags);
+           if (_lastPlaceholder !== placeholder) {
+             input.attr('placeholder', placeholder);
+             _lastPlaceholder = placeholder;
            }
-         };
+         }
 
-         radio.focus = function () {
-           radios.node().focus();
+         formFields.fieldsArr = function (val) {
+           if (!arguments.length) return _fieldsArr;
+           _fieldsArr = val || [];
+           return formFields;
          };
 
-         radio.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           _oldType = {};
-           return radio;
+         formFields.state = function (val) {
+           if (!arguments.length) return _state;
+           _state = val;
+           return formFields;
          };
 
-         radio.isAllowed = function () {
-           return _entityIDs.length === 1;
+         formFields.klass = function (val) {
+           if (!arguments.length) return _klass;
+           _klass = val;
+           return formFields;
          };
 
-         return utilRebind(radio, dispatch, 'on');
+         return formFields;
        }
 
-       function uiFieldRestrictions(field, context) {
+       function uiChangesetEditor(context) {
          var dispatch = dispatch$8('change');
-         var breathe = behaviorBreathe();
-         corePreferences('turn-restriction-via-way', null); // remove old key
-
-         var storedViaWay = corePreferences('turn-restriction-via-way0'); // use new key #6922
-
-         var storedDistance = corePreferences('turn-restriction-distance');
-
-         var _maxViaWay = storedViaWay !== null ? +storedViaWay : 0;
-
-         var _maxDistance = storedDistance ? +storedDistance : 30;
-
-         var _initialized = false;
-
-         var _parent = select(null); // the entire field
-
-
-         var _container = select(null); // just the map
+         var formFields = uiFormFields(context);
+         var commentCombo = uiCombobox(context, 'comment').caseSensitive(true);
 
+         var _fieldsArr;
 
-         var _oldTurns;
+         var _tags;
 
-         var _graph;
+         var _changesetID;
 
-         var _vertexID;
+         function changesetEditor(selection) {
+           render(selection);
+         }
 
-         var _intersection;
+         function render(selection) {
+           var initial = false;
 
-         var _fromWayID;
+           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
+             })];
 
-         var _lastXPos;
+             _fieldsArr.forEach(function (field) {
+               field.on('change', function (t, onInput) {
+                 dispatch.call('change', field, undefined, t, onInput);
+               });
+             });
+           }
 
-         function restrictions(selection) {
-           _parent = selection; // try to reuse the intersection, but always rebuild it if the graph has changed
+           _fieldsArr.forEach(function (field) {
+             field.tags(_tags);
+           });
 
-           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.
+           selection.call(formFields.fieldsArr(_fieldsArr));
 
+           if (initial) {
+             var commentField = selection.select('.form-field-comment textarea');
+             var commentNode = commentField.node();
 
-           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 (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
 
-           select(selection.node().parentNode).classed('hide', !isOK); // if form field is hidden or has detached from dom, clean up.
 
-           if (!isOK || !context.container().select('.inspector-wrap.inspector-hidden').empty() || !selection.node().parentNode || !selection.node().parentNode.parentNode) {
-             selection.call(restrictions.off);
-             return;
-           }
+             utilTriggerEvent(commentField, 'blur');
+             var osm = context.connection();
 
-           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
+             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
 
-           var containerEnter = container.enter().append('div').attr('class', 'restriction-container');
-           containerEnter.append('div').attr('class', 'restriction-help'); // update
 
-           _container = containerEnter.merge(container).call(renderViewer);
-           var controls = wrap.selectAll('.restriction-controls').data([0]); // enter/update
+           var hasGoogle = _tags.comment.match(/google/i);
 
-           controls.enter().append('div').attr('class', 'restriction-controls-container').append('div').attr('class', 'restriction-controls').merge(controls).call(renderControls);
+           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').call(_t.append('commit.google_warning'));
+           commentEnter.transition().duration(200).style('opacity', 1);
          }
 
-         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
-
-           selection.selectAll('.restriction-distance-input').property('value', _maxDistance).on('input', function () {
-             var val = select(this).property('value');
-             _maxDistance = +val;
-             _intersection = null;
-
-             _container.selectAll('.layer-osm .layer-turns *').remove();
-
-             corePreferences('turn-restriction-distance', _maxDistance);
+         changesetEditor.tags = function (_) {
+           if (!arguments.length) return _tags;
+           _tags = _; // Don't reset _fieldsArr here.
 
-             _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
+           return changesetEditor;
+         };
 
-           selection.selectAll('.restriction-via-way-input').property('value', _maxViaWay).on('input', function () {
-             var val = select(this).property('value');
-             _maxViaWay = +val;
+         changesetEditor.changesetID = function (_) {
+           if (!arguments.length) return _changesetID;
+           if (_changesetID === _) return changesetEditor;
+           _changesetID = _;
+           _fieldsArr = null;
+           return changesetEditor;
+         };
 
-             _container.selectAll('.layer-osm .layer-turns *').remove();
+         return utilRebind(changesetEditor, dispatch, 'on');
+       }
 
-             corePreferences('turn-restriction-via-way0', _maxViaWay);
+       var JXON = new function () {
+         var sValueProp = 'keyValue',
+             sAttributesProp = 'keyAttributes',
+             sAttrPref = '@',
 
-             _parent.call(restrictions);
-           });
-           selection.selectAll('.restriction-via-way-text').html(displayMaxVia(_maxViaWay));
-         }
+         /* you can customize these values */
+         aCache = [],
+             rIsNull = /^\s*$/,
+             rIsBool = /^(?:true|false)$/i;
 
-         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 parseText(sValue) {
+           if (rIsNull.test(sValue)) {
+             return null;
+           }
 
-           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 (rIsBool.test(sValue)) {
+             return sValue.toLowerCase() === 'true';
+           }
 
-           var extent = geoExtent();
+           if (isFinite(sValue)) {
+             return parseFloat(sValue);
+           }
 
-           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 (isFinite(Date.parse(sValue))) {
+             return new Date(sValue);
+           }
 
+           return sValue;
+         }
 
-           if (_intersection.vertices.length > 1) {
-             var padding = 180; // in z22 pixels
+         function EmptyTree() {}
 
-             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));
-           }
+         EmptyTree.prototype.toString = function () {
+           return 'null';
+         };
 
-           var padTop = 35; // reserve top space for hint text
+         EmptyTree.prototype.valueOf = function () {
+           return 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);
+         function objectify(vValue) {
+           return vValue === null ? new EmptyTree() : vValue instanceof Object ? vValue : new vValue.constructor(vValue);
+         }
 
-           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 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 (bChildren) {
+             for (var oNode, nItem = 0; nItem < oParentNode.childNodes.length; nItem++) {
+               oNode = oParentNode.childNodes.item(nItem);
 
-           if (_fromWayID && !vgraph.hasEntity(_fromWayID)) {
-             _fromWayID = null;
-             _oldTurns = null;
+               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);
+               }
+             }
            }
 
-           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 nLevelEnd = aCache.length,
+               vBuiltVal = parseText(sCollectedTxt);
 
-           if (_fromWayID) {
-             way = vgraph.entity(_fromWayID);
-             surface.selectAll('.' + _fromWayID).classed('selected', true).classed('related', true);
+           if (!bHighVerb && (bChildren || bAttributes)) {
+             vResult = nVerb === 0 ? objectify(vBuiltVal) : {};
            }
 
-           document.addEventListener('resizeWindow', function () {
-             utilSetDimensions(_container, null);
-             redraw(1);
-           }, false);
-           updateHints(null);
+           for (var nElId = nLevelStart; nElId < nLevelEnd; nElId++) {
+             sProp = aCache[nElId].nodeName.toLowerCase();
+             vContent = createObjTree(aCache[nElId], nVerb, bFreeze, bNesteAttr);
 
-           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 (vResult.hasOwnProperty(sProp)) {
+               if (vResult[sProp].constructor !== Array) {
+                 vResult[sProp] = [vResult[sProp]];
+               }
 
-             if (entity) {
-               datum = entity;
+               vResult[sProp].push(vContent);
+             } else {
+               vResult[sProp] = vContent;
+               nLength++;
              }
+           }
+
+           if (bAttributes) {
+             var nAttrLen = oParentNode.attributes.length,
+                 sAPrefix = bNesteAttr ? '' : sAttrPref,
+                 oAttrParent = bNesteAttr ? {} : vResult;
 
-             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);
+             for (var oAttrib, nAttrib = 0; nAttrib < nAttrLen; nLength++, nAttrib++) {
+               oAttrib = oParentNode.attributes.item(nAttrib);
+               oAttrParent[sAPrefix + oAttrib.name.toLowerCase()] = parseText(oAttrib.value.trim());
+             }
 
-               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
+             if (bNesteAttr) {
+               if (bFreeze) {
+                 Object.freeze(oAttrParent);
+               }
 
-                 datumOnly.only = true; // but change this property
+               vResult[sAttributesProp] = oAttrParent;
+               nLength -= nAttrLen - 1;
+             }
+           }
 
-                 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.
+           if (nVerb === 3 || (nVerb === 2 || nVerb === 1 && nLength > 0) && sCollectedTxt) {
+             vResult[sValueProp] = vBuiltVal;
+           } else if (!bHighVerb && nLength === 0 && sCollectedTxt) {
+             vResult = vBuiltVal;
+           }
 
-                 turns = _intersection.turns(_fromWayID, 2);
-                 extraActions = [];
-                 _oldTurns = [];
+           if (bFreeze && (bHighVerb || nLength > 0)) {
+             Object.freeze(vResult);
+           }
 
-                 for (i = 0; i < turns.length; i++) {
-                   var turn = turns[i];
-                   if (seen[turn.restrictionID]) continue; // avoid deleting the turn twice (#4968, #4928)
+           aCache.length = nLevelStart;
+           return vResult;
+         }
 
-                   if (turn.direct && turn.path[1] === datum.path[1]) {
-                     seen[turns[i].restrictionID] = true;
-                     turn.restrictionType = osmInferRestriction(vgraph, turn, projection);
+         function loadObjTree(oXMLDoc, oParentEl, oParentObj) {
+           var vValue, oChild;
 
-                     _oldTurns.push(turn);
+           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()));
+           }
 
-                     extraActions.push(actionUnrestrictTurn(turn));
-                   }
-                 }
+           for (var sName in oParentObj) {
+             vValue = oParentObj[sName];
 
-                 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 (isFinite(sName) || vValue instanceof Function) {
+               continue;
+             }
+             /* verbosity level is 0 */
 
-                 for (i = 0; i < turns.length; i++) {
-                   if (turns[i].key !== datum.key) {
-                     extraActions.push(actionRestrictTurn(turns[i], turns[i].restrictionType));
-                   }
-                 }
 
-                 _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')]);
+             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);
 
-               context.perform.apply(context, actions); // At this point the datum will be changed, but will have same key..
-               // Refresh it and update the help..
+               if (vValue instanceof Object) {
+                 loadObjTree(oXMLDoc, oChild, vValue);
+               } else if (vValue !== null && vValue !== true) {
+                 oChild.appendChild(oXMLDoc.createTextNode(vValue.toString()));
+               }
 
-               var s = surface.selectAll('.' + datum.key);
-               datum = s.empty() ? null : s.datum();
-               updateHints(datum);
-             } else {
-               _fromWayID = null;
-               _oldTurns = null;
-               redraw();
+               oParentEl.appendChild(oChild);
              }
            }
+         }
 
-           function mouseover(d3_event) {
-             var datum = d3_event.target.__data__;
-             updateHints(datum);
-           }
+         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;
 
-           _lastXPos = _lastXPos || sdims[0];
+           return createObjTree(oXMLParent, _nVerb, bFreeze || false, arguments.length > 3 ? bNesteAttributes : _nVerb === 3);
+         };
 
-           function redraw(minChange) {
-             var xPos = -1;
+         this.unbuild = function (oObjTree) {
+           var oNewDoc = document.implementation.createDocument('', '', null);
+           loadObjTree(oNewDoc, oNewDoc, oObjTree);
+           return oNewDoc;
+         };
 
-             if (minChange) {
-               xPos = utilGetDimensions(context.container().select('.sidebar'))[0];
-             }
+         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));
 
-             if (!minChange || minChange && Math.abs(xPos - _lastXPos) >= minChange) {
-               if (context.hasEntity(_vertexID)) {
-                 _lastXPos = xPos;
+       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.html('inspector.title_count', {
+             title: {
+               html: _t.html('commit.changes')
+             },
+             count: summary.length
+           });
+         }).disclosureContent(renderDisclosureContent);
 
-                 _container.call(renderViewer);
-               }
+         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').text(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').text(function (d) {
+             var name = utilDisplayName(d.entity) || '',
+                 string = '';
+
+             if (name !== '') {
+               string += ':';
              }
-           }
 
-           function highlightPathsFrom(wayID) {
-             surface.selectAll('.related').classed('related', false).classed('allow', false).classed('restrict', false).classed('only', false);
-             surface.selectAll('.' + wayID).classed('related', true);
+             return string += ' ' + name;
+           });
+           items = itemsEnter.merge(items); // Download changeset link
 
-             if (wayID) {
-               var turns = _intersection.turns(wayID, _maxViaWay);
+           var changeset = new osmChangeset().update({
+             id: undefined
+           });
+           var changes = history.changes(actionDiscardTags(history.difference(), _discardTags));
+           delete changeset.id; // Export without chnageset_id
 
-               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';
+           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 (turn.only || turns.length === 1) {
-                   if (turn.via.ways) {
-                     ids = ids.concat(turn.via.ways);
-                   }
-                 } else if (turn.to.way === wayID) {
-                   continue;
-                 }
+           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);
+             });
+           }
 
-                 surface.selectAll(utilEntitySelector(ids)).classed('related', true).classed('allow', klass === 'allow').classed('restrict', klass === 'restrict').classed('only', klass === 'only');
-               }
+           linkEnter.call(svgIcon('#iD-icon-load', 'inline')).append('span').call(_t.append('commit.download_changes'));
+
+           function mouseover(d) {
+             if (d.entity) {
+               context.surface().selectAll(utilEntityOrMemberSelector([d.entity.id], context.graph())).classed('hover', true);
              }
            }
 
-           function updateHints(datum) {
-             var help = _container.selectAll('.restriction-help').html('');
-
-             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;
+           function mouseout() {
+             context.surface().selectAll('.hover').classed('hover', false);
+           }
 
-             if (entity) {
-               datum = entity;
+           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);
              }
+           }
+         }
 
-             if (_fromWayID) {
-               way = vgraph.entity(_fromWayID);
-               surface.selectAll('.' + _fromWayID).classed('selected', true).classed('related', true);
-             } // Hovering a way
+         return section;
+       }
 
+       function uiCommitWarnings(context) {
+         function commitWarnings(selection) {
+           var issuesBySeverity = context.validator().getIssuesBySeverity({
+             what: 'edited',
+             where: 'all',
+             includeDisabledRules: true
+           });
 
-             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;
+           for (var severity in issuesBySeverity) {
+             var issues = issuesBySeverity[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: ''
-                 });
+             if (severity !== 'error') {
+               // exclude 'fixme' and similar - #8603
+               issues = issues.filter(function (issue) {
+                 return issue.type !== 'help_request';
+               });
+             }
+
+             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);
+             });
+           }
+         }
 
-               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)
-               }));
+         return commitWarnings;
+       }
 
-               if (datum.via.ways && datum.via.ways.length) {
-                 var names = [];
+       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
 
-                 for (var i = 0; i < datum.via.ways.length; i++) {
-                   var prev = names[names.length - 1];
-                   var curr = displayName(datum.via.ways[i], vgraph);
+       var hashtagRegex = /(#[^\u2000-\u206F\u2E00-\u2E7F\s\\'!"#$%()*,.\/:;<=>?@\[\]^`{|}~]+)/g;
+       function uiCommit(context) {
+         var dispatch = dispatch$8('cancel');
 
-                   if (!prev || curr !== prev) {
-                     // collapse identical names
-                     names.push(curr);
-                   }
-                 }
+         var _userDetails;
 
-                 help.append('div') // "VIA {viaNames}"
-                 .html(_t.html('restriction.help.via_names', {
-                   via: placeholders.via,
-                   viaNames: names.join(', ')
-                 }));
-               }
+         var _selection;
 
-               if (!indirect) {
-                 help.append('div') // Click for "No Right Turn"
-                 .html(_t.html('restriction.help.toggle', {
-                   turn: nextText.trim()
-                 }));
-               }
+         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);
 
-               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);
+         function commit(selection) {
+           _selection = selection; // Initialize changeset if one does not exist yet.
 
-               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
-                 }));
-               }
-             }
-           }
+           if (!context.changeset) initChangeset();
+           loadDerivedChangesetTags();
+           selection.call(render);
          }
 
-         function displayMaxDistance(maxDist) {
-           var isImperial = !_mainLocalizer.usesMetric();
-           var opts;
+         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
 
-           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
-               })
-             };
-           }
+           if (commentDate > currDate || currDate - commentDate > cutoff) {
+             corePreferences('comment', null);
+             corePreferences('hashtags', null);
+             corePreferences('source', null);
+           } // load in explicitly-set values, if any
 
-           return _t.html('restriction.controls.distance_up_to', opts);
-         }
 
-         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');
-         }
+           if (context.defaultChangesetComment()) {
+             corePreferences('comment', context.defaultChangesetComment());
+             corePreferences('commentDate', Date.now());
+           }
 
-         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;
-         }
+           if (context.defaultChangesetSource()) {
+             corePreferences('source', context.defaultChangesetSource());
+             corePreferences('commentDate', Date.now());
+           }
 
-         restrictions.entityIDs = function (val) {
-           _intersection = null;
-           _fromWayID = null;
-           _oldTurns = null;
-           _vertexID = val[0];
-         };
+           if (context.defaultChangesetHashtags()) {
+             corePreferences('hashtags', context.defaultChangesetHashtags());
+             corePreferences('commentDate', Date.now());
+           }
 
-         restrictions.tags = function () {};
+           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
 
-         restrictions.focus = function () {};
+           findHashtags(tags, true);
+           var hashtags = corePreferences('hashtags');
 
-         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);
-         };
+           if (hashtags) {
+             tags.hashtags = hashtags;
+           }
 
-         return utilRebind(restrictions, dispatch, 'on');
-       }
-       uiFieldRestrictions.supportsMultiselection = false;
+           var source = corePreferences('source');
 
-       function uiFieldTextarea(field, context) {
-         var dispatch = dispatch$8('change');
-         var input = select(null);
+           if (source) {
+             tags.source = source;
+           }
 
-         var _tags;
+           var photoOverlaysUsed = context.history().photoOverlaysUsed();
 
-         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);
-         }
+           if (photoOverlaysUsed.length) {
+             var sources = (tags.source || '').split(';'); // include this tag for any photo layer
 
-         function change(onInput) {
-           return function () {
-             var val = utilGetSetValue(input);
-             if (!onInput) val = context.cleanTagValue(val); // don't override multiple values with blank string
+             if (sources.indexOf('streetlevel imagery') === -1) {
+               sources.push('streetlevel imagery');
+             } // add the photo overlays used during editing as sources
 
-             if (!val && Array.isArray(_tags[field.key])) return;
-             var t = {};
-             t[field.key] = val || undefined;
-             dispatch.call('change', this, t, onInput);
-           };
-         }
 
-         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);
-         };
+             photoOverlaysUsed.forEach(function (photoOverlay) {
+               if (sources.indexOf(photoOverlay) === -1) {
+                 sources.push(photoOverlay);
+               }
+             });
+             tags.source = context.cleanTagValue(sources.join(';'));
+           }
 
-         textarea.focus = function () {
-           input.node().focus();
-         };
+           context.changeset = new osmChangeset({
+             tags: tags
+           });
+         } // Calculates read-only metadata tags based on the user's editing session and applies
+         // them to the changeset.
 
-         return utilRebind(textarea, dispatch, 'on');
-       }
 
-       var getOwnPropertyDescriptor = objectGetOwnPropertyDescriptor.f;
+         function loadDerivedChangesetTags() {
+           var osm = context.connection();
+           if (!osm) return;
+           var tags = Object.assign({}, context.changeset.tags); // shallow copy
+           // assign tags for imagery used
 
+           var imageryUsed = context.cleanTagValue(context.history().imageryUsed().join(';'));
+           tags.imagery_used = imageryUsed || 'None'; // assign tags for closed issues and notes
 
+           var osmClosed = osm.getClosedIDs();
+           var itemType;
 
+           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(';'));
+             }
+           }
 
-       // eslint-disable-next-line es/no-string-prototype-endswith -- safe
-       var $endsWith = ''.endsWith;
-       var min = Math.min;
+           if (services.improveOSM) {
+             var iOsmClosed = services.improveOSM.getClosedCounts();
 
-       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;
-       }();
+             for (itemType in iOsmClosed) {
+               tags['closed:improveosm:' + itemType] = context.cleanTagValue(iOsmClosed[itemType].toString());
+             }
+           }
 
-       // `String.prototype.endsWith` method
-       // https://tc39.es/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(toLength(endPosition), len);
-           var search = String(searchString);
-           return $endsWith
-             ? $endsWith.call(that, search, end)
-             : that.slice(end - search.length, end) === search;
-         }
-       });
+           if (services.osmose) {
+             var osmoseClosed = services.osmose.getClosedCounts();
 
-       function uiFieldWikidata(field, context) {
-         var wikidata = services.wikidata;
-         var dispatch = dispatch$8('change');
+             for (itemType in osmoseClosed) {
+               tags['closed:osmose:' + itemType] = context.cleanTagValue(osmoseClosed[itemType].toString());
+             }
+           } // remove existing issue counts
 
-         var _selection = select(null);
 
-         var _searchInput = select(null);
+           for (var key in tags) {
+             if (key.match(/(^warnings:)|(^resolved:)/)) {
+               delete tags[key];
+             }
+           }
 
-         var _qid = null;
-         var _wikidataEntity = null;
-         var _wikiURL = '';
-         var _entityIDs = [];
+           function addIssueCounts(issues, prefix) {
+             var issuesByType = utilArrayGroupBy(issues, 'type');
 
-         var _wikipediaKey = field.keys && field.keys.find(function (key) {
-           return key.includes('wikipedia');
-         }),
-             _hintKey = field.key === 'wikidata' ? 'name' : field.key.split(':')[0];
+             for (var issueType in issuesByType) {
+               var issuesOfType = issuesByType[issueType];
 
-         var combobox = uiCombobox(context, 'combo-' + field.safeid).caseSensitive(true).minItems(1);
+               if (issuesOfType[0].subtype) {
+                 var issuesBySubtype = utilArrayGroupBy(issuesOfType, 'subtype');
 
-         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();
+                 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());
+               }
              }
-           }).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
+           } // add counts of warnings generated by the user's edits
 
-           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');
+
+           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
+
+           addIssueCounts(warnings, 'warnings'); // add counts of issues resolved by the user's edits
+
+           var resolvedIssues = context.validator().getResolvedIssues();
+           addIssueCounts(resolvedIssues, 'resolved');
+           context.changeset = context.changeset.update({
+             tags: tags
            });
          }
 
-         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 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('h2').call(_t.append('commit.title'));
+           headerTitle.append('button').attr('class', 'close').attr('title', _t('icons.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
 
-               if (entity.tags[_hintKey]) {
-                 q = entity.tags[_hintKey];
-                 break;
-               }
-             }
+           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
+
+           body.call(commitWarnings); // Upload Explanation
+
+           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]);
+
+           if (prose.enter().size()) {
+             // first time, make sure to update user details in prose
+             _userDetails = null;
            }
 
-           wikidata.itemsForSearchQuery(q, function (err, data) {
+           prose = prose.enter().append('p').attr('class', 'commit-info').call(_t.append('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
+
+           osm.userDetails(function (err, user) {
              if (err) return;
+             if (_userDetails === user) return; // no change
 
-             for (var i in data) {
-               data[i].value = data[i].label + ' (' + data[i].id + ')';
-               data[i].title = data[i].description;
+             _userDetails = user;
+             var userLink = select(document.createElement('div'));
+
+             if (user.image_url) {
+               userLink.append('img').attr('src', user.image_url).attr('class', 'icon pre-text user-icon');
              }
 
-             if (callback) callback(data);
-           });
-         }
+             userLink.append('a').attr('class', 'user-info').text(user.display_name).attr('href', osm.userURL(user.display_name)).attr('target', '_blank');
+             prose.html(_t.html('commit.upload_explanation_with_user', {
+               user: {
+                 html: userLink.html()
+               }
+             }));
+           }); // Request Review
 
-         function change() {
-           var syncTags = {};
-           syncTags[field.key] = _qid;
-           dispatch.call('change', this, syncTags); // attempt asynchronous update of wikidata tag..
+           var requestReview = saveSection.selectAll('.request-review').data([0]); // Enter
 
-           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.
+           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 (context.graph() !== initGraph) return;
-             if (!entity.sitelinks) return;
-             var langs = wikidata.languagesToQuery(); // use the label and description languages as fallbacks
+           if (!labelEnter.empty()) {
+             labelEnter.call(uiTooltip().title(_t.html('commit.request_review_info')).placement('top'));
+           }
 
-             ['labels', 'descriptions'].forEach(function (key) {
-               if (!entity[key]) return;
-               var valueLangs = Object.keys(entity[key]);
-               if (valueLangs.length === 0) return;
-               var valueLang = valueLangs[0];
+           labelEnter.append('input').attr('type', 'checkbox').attr('id', requestReviewDomId);
+           labelEnter.append('span').call(_t.append('commit.request_review')); // Update
 
-               if (langs.indexOf(valueLang) === -1) {
-                 langs.push(valueLang);
-               }
-             });
-             var newWikipediaValue;
+           requestReview = requestReview.merge(requestReviewEnter);
+           var requestReviewInput = requestReview.selectAll('input').property('checked', isReviewRequested(context.changeset.tags)).on('change', toggleRequestReview); // Buttons
 
-             if (_wikipediaKey) {
-               var foundPreferred;
+           var buttonSection = saveSection.selectAll('.buttons').data([0]); // enter
 
-               for (var i in langs) {
-                 var lang = langs[i];
-                 var siteID = lang.replace('-', '_') + 'wiki';
+           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').call(_t.append('commit.cancel'));
+           var uploadButton = buttonEnter.append('button').attr('class', 'action button save-button');
+           uploadButton.append('span').attr('class', 'label').call(_t.append('commit.save'));
+           var uploadBlockerTooltipText = getUploadBlockerMessage(); // update
 
-                 if (entity.sitelinks[siteID]) {
-                   foundPreferred = true;
-                   newWikipediaValue = lang + ':' + entity.sitelinks[siteID].title; // use the first match
+           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
 
-                   break;
-                 }
+               for (var key in context.changeset.tags) {
+                 // remove any empty keys before upload
+                 if (!key) delete context.changeset.tags[key];
                }
 
-               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 {
-                   var wikiLang = wikiSiteKeys[0].slice(0, -4).replace('_', '-');
-                   var wikiTitle = entity.sitelinks[wikiSiteKeys[0]].title;
-                   newWikipediaValue = wikiLang + ':' + wikiTitle;
-                 }
-               }
+               context.uploader().save(context.changeset);
              }
+           }); // remove any existing tooltip
 
-             if (newWikipediaValue) {
-               newWikipediaValue = context.cleanTagValue(newWikipediaValue);
-             }
+           uiTooltip().destroyAny(buttonSection.selectAll('.save-button'));
 
-             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 (uploadBlockerTooltipText) {
+             buttonSection.selectAll('.save-button').call(uiTooltip().title(uploadBlockerTooltipText).placement('top'));
+           } // Raw Tag Editor
 
-               if (newWikipediaValue === null) {
-                 if (!currTags[_wikipediaKey]) return null;
-                 delete currTags[_wikipediaKey];
-               } else {
-                 currTags[_wikipediaKey] = newWikipediaValue;
-               }
 
-               return actionChangeTags(entityID, currTags);
-             }).filter(Boolean);
-             if (!actions.length) return; // Coalesce the update of wikidata tag into the previous tag change
+           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
 
-             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
-           });
+           changesSection.call(commitChanges.render);
+
+           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);
+           }
          }
 
-         function setLabelForEntity() {
-           var label = '';
+         function getUploadBlockerMessage() {
+           var errors = context.validator().getIssuesBySeverity({
+             what: 'edited',
+             where: 'all'
+           }).error;
 
-           if (_wikidataEntity) {
-             label = entityPropertyForDisplay(_wikidataEntity, 'labels');
+           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 (label.length === 0) {
-               label = _wikidataEntity.id.toString();
+             if (!hasChangesetComment) {
+               return _t('commit.comment_needed_message');
              }
            }
 
-           utilGetSetValue(_searchInput, label);
+           return null;
          }
 
-         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 changeTags(_, changed, onInput) {
+           if (changed.hasOwnProperty('comment')) {
+             if (changed.comment === undefined) {
+               changed.comment = '';
+             }
 
-           _qid = typeof tags[field.key] === 'string' && tags[field.key] || '';
+             if (!onInput) {
+               corePreferences('comment', changed.comment);
+               corePreferences('commentDate', Date.now());
+             }
+           }
 
-           if (!/^Q[0-9]*$/.test(_qid)) {
-             // not a proper QID
-             unrecognized();
-             return;
-           } // QID value in correct format
+           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`
 
 
-           _wikiURL = 'https://wikidata.org/wiki/' + _qid;
-           wikidata.entityByQID(_qid, function (err, entity) {
-             if (err) {
-               unrecognized();
-               return;
-             }
+           updateChangeset(changed, onInput);
 
-             _wikidataEntity = entity;
-             setLabelForEntity();
-             var description = entityPropertyForDisplay(entity, 'descriptions');
+           if (_selection) {
+             _selection.call(render);
+           }
+         }
 
-             _selection.select('button.wiki-link').classed('disabled', false);
+         function findHashtags(tags, commentOnly) {
+           var detectedHashtags = commentHashtags();
 
-             _selection.select('.preset-wikidata-description').style('display', function () {
-               return description.length > 0 ? 'flex' : 'none';
-             }).select('input').attr('value', description);
+           if (detectedHashtags.length) {
+             // always remove stored hashtags if there are hashtags in the comment - #4304
+             corePreferences('hashtags', 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 (!detectedHashtags.length || !commentOnly) {
+             detectedHashtags = detectedHashtags.concat(hashtagHashtags());
+           }
 
-           function unrecognized() {
-             _wikidataEntity = null;
-             setLabelForEntity();
+           var allLowerCase = new Set();
+           return detectedHashtags.filter(function (hashtag) {
+             // Compare tags as lowercase strings, but keep original case tags
+             var lowerCase = hashtag.toLowerCase();
 
-             _selection.select('.preset-wikidata-description').style('display', 'none');
+             if (!allLowerCase.has(lowerCase)) {
+               allLowerCase.add(lowerCase);
+               return true;
+             }
 
-             _selection.select('.preset-wikidata-identifier').style('display', 'none');
+             return false;
+           }); // Extract hashtags from `comment`
 
-             _selection.select('button.wiki-link').classed('disabled', true);
+           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 (_qid && _qid !== '') {
-               _wikiURL = 'https://wikidata.org/wiki/Special:Search?search=' + _qid;
-             } else {
-               _wikiURL = '';
-             }
-           }
-         };
 
-         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
+           function hashtagHashtags() {
+             var matches = (tags.hashtags || '').split(/[,;\s]+/).map(function (s) {
+               if (s[0] !== '#') {
+                 s = '#' + s;
+               } // prepend '#'
 
-           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
+               var matched = s.match(hashtagRegex);
+               return matched && matched[0];
+             }).filter(Boolean); // exclude falsy
 
+             return matches || [];
+           }
+         }
 
-           return propObj[langKeys[0]].value;
+         function isReviewRequested(tags) {
+           var rr = tags.review_requested;
+           if (rr === undefined) return false;
+           rr = rr.trim().toLowerCase();
+           return !(rr === '' || rr === 'no');
          }
 
-         wiki.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return wiki;
-         };
+         function updateChangeset(changed, onInput) {
+           var tags = Object.assign({}, context.changeset.tags); // shallow copy
 
-         wiki.focus = function () {
-           _searchInput.node().focus();
-         };
+           Object.keys(changed).forEach(function (k) {
+             var v = changed[k];
+             k = context.cleanTagKey(k);
+             if (readOnlyTags.indexOf(k) !== -1) return;
 
-         return utilRebind(wiki, dispatch, 'on');
-       }
+             if (v === undefined) {
+               delete tags[k];
+             } else if (onInput) {
+               tags[k] = v;
+             } else {
+               tags[k] = context.cleanTagValue(v);
+             }
+           });
+
+           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 uiFieldWikipedia(field, context) {
-         var _arguments = arguments;
-         var dispatch = dispatch$8('change');
-         var wikipedia = services.wikipedia;
-         var wikidata = services.wikidata;
 
-         var _langInput = select(null);
+           if (_userDetails && _userDetails.changesets_count !== undefined) {
+             var changesetsCount = parseInt(_userDetails.changesets_count, 10) + 1; // #4283
 
-         var _titleInput = select(null);
+             tags.changesets_count = String(changesetsCount); // first 100 edits - new user
 
-         var _wikiURL = '';
+             if (changesetsCount <= 100) {
+               var s;
+               s = corePreferences('walkthrough_completed');
 
-         var _entityIDs;
+               if (s) {
+                 tags['ideditor:walkthrough_completed'] = s;
+               }
 
-         var _tags;
+               s = corePreferences('walkthrough_progress');
 
-         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 (s) {
+                 tags['ideditor:walkthrough_progress'] = s;
+               }
 
-             for (var i in _entityIDs) {
-               var entity = context.hasEntity(_entityIDs[i]);
+               s = corePreferences('walkthrough_started');
 
-               if (entity.tags.name) {
-                 value = entity.tags.name;
-                 break;
+               if (s) {
+                 tags['ideditor:walkthrough_started'] = s;
                }
              }
+           } else {
+             delete tags.changesets_count;
            }
 
-           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 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);
-
-           _langInput.on('blur', changeLang).on('change', changeLang);
-
-           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);
-           });
-
-           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');
-           });
+           if (!fastDeepEqual(context.changeset.tags, tags)) {
+             context.changeset = context.changeset.update({
+               tags: tags
+             });
+           }
          }
 
-         function defaultLanguageInfo(skipEnglishFallback) {
-           var langCode = _mainLocalizer.languageCode().toLowerCase();
+         commit.reset = function () {
+           context.changeset = null;
+         };
 
-           for (var i in _dataWikipedia) {
-             var d = _dataWikipedia[i]; // default to the language of iD's current locale
+         return utilRebind(commit, dispatch, 'on');
+       }
 
-             if (d[2] === langCode) return d;
-           } // fallback to English
+       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();
+           }).call(_t.append('confirm.okay')).node().focus();
+           return modalSelection;
+         };
 
-           return skipEnglishFallback ? ['', '', ''] : ['English', 'English', 'en'];
-         }
+         return modalSelection;
+       }
 
-         function language(skipEnglishFallback) {
-           var value = utilGetSetValue(_langInput).toLowerCase();
+       function uiConflicts(context) {
+         var dispatch = dispatch$8('cancel', 'save');
+         var keybinding = utilKeybinding('conflicts');
 
-           for (var i in _dataWikipedia) {
-             var d = _dataWikipedia[i]; // return the language already set in the UI, if supported
+         var _origChanges;
 
-             if (d[0].toLowerCase() === value || d[1].toLowerCase() === value || d[2] === value) return d;
-           } // fallback to English
+         var _conflictList;
 
+         var _shownConflictIndex;
 
-           return defaultLanguageInfo(skipEnglishFallback);
+         function keybindingOn() {
+           select(document).call(keybinding.on('⎋', cancel, true));
          }
 
-         function changeLang() {
-           utilGetSetValue(_langInput, language()[1]);
-           change(true);
+         function keybindingOff() {
+           select(document).call(keybinding.unbind);
          }
 
-         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 = {};
-
-           if (langInfo) {
-             var nativeLangName = langInfo[1]; // Normalize title http://www.mediawiki.org/wiki/API:Query#Title_normalization
-
-             value = decodeURIComponent(m[2]).replace(/_/g, ' ');
+         function tryAgain() {
+           keybindingOff();
+           dispatch.call('save');
+         }
 
-             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) {
+         function cancel() {
+           keybindingOff();
+           dispatch.call('cancel');
+         }
 
-               anchor = decodeURIComponent(m[3]); // }
+         function conflicts(selection) {
+           keybindingOn();
+           var headerEnter = selection.selectAll('.header').data([0]).enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'fr').attr('title', _t('icons.close')).on('click', cancel).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h2').call(_t.append('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').call(_t.append('save.conflict.help')); // Download changes link
 
-               value += '#' + anchor.replace(/_/g, ' ');
-             }
+           var detected = utilDetect();
+           var changeset = new osmChangeset();
+           delete changeset.id; // Export without changeset_id
 
-             value = value.slice(0, 1).toUpperCase() + value.slice(1);
-             utilGetSetValue(_langInput, nativeLangName);
-             utilGetSetValue(_titleInput, value);
-           }
+           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 (value) {
-             syncTags.wikipedia = context.cleanTagValue(language()[2] + ':' + value);
+           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 {
-             syncTags.wikipedia = undefined;
+             // IE11 and Edge
+             linkEnter // open data uri in a new tab
+             .attr('target', '_blank').on('click.download', function () {
+               navigator.msSaveBlob(blob, fileName);
+             });
            }
 
-           dispatch.call('change', this, syncTags);
-           if (skipWikidata || !value || !language()[2]) return; // attempt asynchronous update of wikidata tag..
-
-           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.
-
-             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
+           linkEnter.call(svgIcon('#iD-icon-load', 'inline')).append('span').call(_t.append('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').call(_t.append('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').call(_t.append('save.title')).on('click.try_again', tryAgain);
+           buttonsEnter.append('button').attr('class', 'secondary-action conflicts-button col6').call(_t.append('confirm.cancel')).on('click.cancel', cancel);
+         }
 
-               if (currTags.wikidata !== value) {
-                 currTags.wikidata = value;
-                 return actionChangeTags(entityID, currTags);
-               }
+         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..
 
-               return null;
-             }).filter(Boolean);
-             if (!actions.length) return; // Coalesce the update of wikidata tag into the previous tag change
+           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);
+           }
 
-             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
+           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').call(_t.append('save.conflict.count', {
+             num: index + 1,
+             total: _conflictList.length
+           }));
+           conflictEnter.append('a').attr('class', 'conflict-description').attr('href', '#').text(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);
            });
          }
 
-         wiki.tags = function (tags) {
-           _tags = tags;
-           updateForTags(tags);
-         };
-
-         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`
-
-           var m = value.match(/([^:]+):([^#]+)(?:#(.+))?/);
-           var tagLang = m && m[1];
-           var tagArticleTitle = m && m[2];
-           var anchor = m && m[3];
-
-           var tagLangInfo = tagLang && _dataWikipedia.find(function (d) {
-             return tagLang === d[2];
-           }); // value in correct format
+         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').text(function (d) {
+             return d.text;
+           }); // update
 
-           if (tagLangInfo) {
-             var nativeLangName = tagLangInfo[1];
-             utilGetSetValue(_langInput, nativeLangName);
-             utilGetSetValue(_titleInput, tagArticleTitle + (anchor ? '#' + anchor : ''));
+           choicesEnter.merge(choices).each(function (d) {
+             var ul = this.parentNode;
 
-             if (anchor) {
-               try {
-                 // Best-effort `anchorencode:` implementation
-                 anchor = encodeURIComponent(anchor.replace(/ /g, '_')).replace(/%/g, '.');
-               } catch (e) {
-                 anchor = anchor.replace(/ /g, '_');
-               }
+             if (ul.__data__.chosen === d.id) {
+               choose(null, ul, d);
              }
+           });
+         }
 
-             _wikiURL = 'https://' + tagLang + '.wikipedia.org/wiki/' + tagArticleTitle.replace(/ /g, '_') + (anchor ? '#' + anchor : ''); // unrecognized value format
-           } else {
-             utilGetSetValue(_titleInput, value);
+         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);
+         }
 
-             if (value && value !== '') {
-               utilGetSetValue(_langInput, '');
-               var defaultLangInfo = defaultLanguageInfo();
-               _wikiURL = "https://".concat(defaultLangInfo[2], ".wikipedia.org/w/index.php?fulltext=1&search=").concat(value);
+         function zoomToEntity(id, extent) {
+           context.surface().selectAll('.hover').classed('hover', false);
+           var entity = context.graph().hasEntity(id);
+
+           if (entity) {
+             if (extent) {
+               context.map().trimmedExtent(extent);
              } else {
-               var shownOrDefaultLangInfo = language(true
-               /* skipEnglishFallback */
-               );
-               utilGetSetValue(_langInput, shownOrDefaultLangInfo[1]);
-               _wikiURL = '';
+               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)
+         //     ]
+         // }
 
-         wiki.entityIDs = function (val) {
-           if (!_arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return wiki;
+
+         conflicts.conflictList = function (_) {
+           if (!arguments.length) return _conflictList;
+           _conflictList = _;
+           return conflicts;
          };
 
-         wiki.focus = function () {
-           _titleInput.node().focus();
+         conflicts.origChanges = function (_) {
+           if (!arguments.length) return _origChanges;
+           _origChanges = _;
+           return conflicts;
          };
 
-         return utilRebind(wiki, dispatch, 'on');
-       }
-       uiFieldWikipedia.supportsMultiselection = false;
+         conflicts.shownEntityIds = function () {
+           if (_conflictList && typeof _shownConflictIndex === 'number') {
+             return [_conflictList[_shownConflictIndex].id];
+           }
 
-       var uiFields = {
-         access: uiFieldAccess,
-         address: uiFieldAddress,
-         check: uiFieldCheck,
-         combo: uiFieldCombo,
-         cycleway: uiFieldCycleway,
-         defaultCheck: uiFieldCheck,
-         email: uiFieldText,
-         identifier: uiFieldText,
-         lanes: uiFieldLanes,
-         localized: uiFieldLocalized,
-         roadspeed: uiFieldRoadspeed,
-         roadheight: uiFieldText,
-         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
-       };
+           return [];
+         };
 
-       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
+         return utilRebind(conflicts, dispatch, 'on');
+       }
 
-         field.domId = utilUniqueDomId('form-field-' + field.safeid);
-         var _show = options.show;
-         var _state = '';
-         var _tags = {};
+       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');
 
-         var _entityExtent;
+         var _expanded = preference === null ? true : preference === 'true';
 
-         if (entityIDs && entityIDs.length) {
-           _entityExtent = entityIDs.reduce(function (extent, entityID) {
-             var entity = context.graph().entity(entityID);
-             return extent.extend(entity.extent(context.graph()));
-           }, geoExtent());
-         }
+         var _entityIDs = [];
+         var _issues = [];
 
-         var _locked = false;
+         var _activeIssueID;
 
-         var _lockedTip = uiTooltip().title(_t.html('inspector.lock.suggestion', {
-           label: field.label
-         })).placement('bottom');
+         var section = uiSection('entity-issues', context).shouldDisplay(function () {
+           return _issues.length > 0;
+         }).label(function () {
+           return _t.html('inspector.title_count', {
+             title: {
+               html: _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);
+         });
 
-         field.keys = field.keys || [field.key]; // only create the fields that are actually being shown
+         function reloadIssues() {
+           _issues = context.validator().getSharedEntityIssues(_entityIDs, {
+             includeDisabledRules: true
+           });
+         }
 
-         if (_show && !field.impl) {
-           createField();
-         } // Creates the field.. This is done lazily,
-         // once we know that the field will be shown.
+         function makeActiveIssue(issueID) {
+           _activeIssueID = issueID;
+           section.selection().selectAll('.issue-container').classed('active', function (d) {
+             return d.id === _activeIssueID;
+           });
+         }
+
+         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
 
+           containers.exit().remove(); // Enter
 
-         function createField() {
-           field.impl = uiFields[field.type](field, context).on('change', function (t, onInput) {
-             dispatch.call('change', field, t, onInput);
+           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 (entityIDs) {
-             field.entityIDs = entityIDs; // if this field cares about the entities, pass them along
+             var extent = d.extent(context.graph());
 
-             if (field.impl.entityIDs) {
-               field.impl.entityIDs(entityIDs);
+             if (extent) {
+               var setZoom = Math.max(context.map().zoom(), 19);
+               context.map().unobscuredCenterZoomEase(extent.center(), setZoom);
              }
-           }
-         }
-
-         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];
-             });
            });
-         }
+           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
 
-         function tagsContainFieldKey() {
-           return field.keys.some(function (key) {
-             if (field.type === 'multiCombo') {
-               for (var tagKey in _tags) {
-                 if (tagKey.indexOf(key) === 0) {
-                   return true;
-                 }
-               }
+             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
 
-               return false;
+             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);
+               });
              }
-
-             return _tags[key] !== undefined;
            });
-         }
+           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).call(_t.append('inspector.no_documentation_key'));
+             }
+           }); // Update
 
-         function revert(d3_event, d) {
-           d3_event.stopPropagation();
-           d3_event.preventDefault();
-           if (!entityIDs || _locked) return;
-           dispatch.call('revert', d, d.keys);
-         }
+           containers = containers.merge(containersEnter).classed('active', function (d) {
+             return d.id === _activeIssueID;
+           });
+           containers.selectAll('.issue-message').html(function (d) {
+             return d.message(context);
+           }); // fixes
 
-         function remove(d3_event, d) {
-           d3_event.stopPropagation();
-           d3_event.preventDefault();
-           if (_locked) return;
-           var t = {};
-           d.keys.forEach(function (key) {
-             t[key] = undefined;
+           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;
            });
-           dispatch.call('change', d, t);
-         }
+           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)
 
-         field.render = function (selection) {
-           var container = selection.selectAll('.form-field').data([field]); // Enter
+             if (d.issue.dateLastRanFix && new Date() - d.issue.dateLastRanFix < 1000) return;
+             d.issue.dateLastRanFix = new Date(); // remove hover-highlighting
 
-           var enter = container.enter().append('div').attr('class', function (d) {
-             return 'form-field form-field-' + d.safeid;
-           }).classed('nowrap', !options.wrap);
+             utilHighlightEntities(d.issue.entityIds.concat(d.entityIds), false, context);
+             new Promise(function (resolve, reject) {
+               d.onClick(context, resolve, reject);
 
-           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();
+               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();
              });
-             textEnter.append('span').attr('class', 'label-textannotation');
+           }).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 (options.remove) {
-               labelEnter.append('button').attr('class', 'remove-icon').attr('title', _t('icons.remove')).call(svgIcon('#iD-operation-delete'));
+             if (iconName.startsWith('maki')) {
+               iconName += '-15';
              }
 
-             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'));
+             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;
              }
-           } // Update
 
+             return null;
+           });
+         }
 
-           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);
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
 
-             if (!d.impl) {
-               createField();
-             }
+           if (!_entityIDs || !val || !utilArrayIdentical(_entityIDs, val)) {
+             _entityIDs = val;
+             _activeIssueID = null;
+             reloadIssues();
+           }
 
-             var reference, help; // instantiate field help
+           return section;
+         };
 
-             if (options.wrap && field.type === 'restrictions') {
-               help = uiFieldHelp(context, 'restrictions');
-             } // instantiate tag reference
+         return section;
+       }
 
+       function uiPresetIcon() {
+         var _preset;
 
-             if (options.wrap && options.info) {
-               var referenceKey = d.key || '';
+         var _geometry;
 
-               if (d.type === 'multiCombo') {
-                 // lookup key without the trailing ':'
-                 referenceKey = referenceKey.replace(/:$/, '');
-               }
+         var _sizeClass = 'medium';
 
-               reference = uiTagReference(d.reference || {
-                 key: referenceKey
-               });
+         function isSmall() {
+           return _sizeClass === 'small';
+         }
 
-               if (_state === 'hover') {
-                 reference.showing(false);
-               }
-             }
+         function presetIcon(selection) {
+           selection.each(render);
+         }
 
-             selection.call(d.impl); // add field help components
+         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';
+         }
 
-             if (help) {
-               selection.call(help.body).select('.field-label').call(help.button);
-             } // add tag reference components
+         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);
+         }
 
+         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));
+           svgEnter.append('path').attr('class', 'area').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 (reference) {
-               selection.call(reference.body).select('.field-label').call(reference.button);
-             }
+           if (category) {
+             categoryBorder.selectAll('path').attr('class', "area ".concat(category.id));
+           }
+         }
 
-             d.impl.tags(_tags);
-           });
-           container.classed('locked', _locked).classed('modified', isModified()).classed('present', tagsContainFieldKey()); // show a tip and lock icon if the field is locked
+         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);
+         }
 
-           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 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);
+           });
 
-         field.state = function (val) {
-           if (!arguments.length) return _state;
-           _state = val;
-           return field;
-         };
+           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);
+             });
+           }
 
-         field.tags = function (val) {
-           if (!arguments.length) return _tags;
-           _tags = val;
+           fill = fillEnter.merge(fill);
+           fill.selectAll('path.stroke').attr('class', "area stroke ".concat(tagClasses));
+           fill.selectAll('path.fill').attr('class', "area fill ".concat(tagClasses));
+         }
 
-           if (tagsContainFieldKey() && !_show) {
-             // always show a field if it has a value to display
-             _show = true;
+         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
 
-             if (!field.impl) {
-               createField();
-             }
-           }
+           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));
+         }
 
-           return field;
-         };
+         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
 
-         field.locked = function (val) {
-           if (!arguments.length) return _locked;
-           _locked = val;
-           return field;
-         };
+           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);
 
-         field.show = function () {
-           _show = true;
+           if (drawRoute) {
+             var routeType = p.tags.type === 'waterway' ? 'waterway' : p.tags.route;
+             var segmentPresetIDs = routeSegments[routeType];
 
-           if (!field.impl) {
-             createField();
+             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));
+             }
            }
+         }
 
-           if (field["default"] && field.key && _tags[field.key] !== field["default"]) {
-             var t = {};
-             t[field.key] = field["default"];
-             dispatch.call('change', this, t);
+         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 = '';
+
+           if (isMaki) {
+             suffix = isSmall() && geom === 'point' ? '-11' : '-15';
            }
-         }; // A shown field has a visible UI, a non-shown field is in the 'Add field' dropdown
 
+           icon.selectAll('use').attr('href', '#' + picon + suffix);
+         }
 
-         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
+         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.
 
 
-         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 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']
+         };
 
-           if (entityIDs && _entityExtent && field.locationSetID) {
-             // is field allowed in this location?
-             var validLocations = _mainLocations.locationsAt(_entityExtent.center());
-             if (!validLocations[field.locationSetID]) return false;
-           }
+         function render() {
+           var p = _preset.apply(this, arguments);
 
-           var prerequisiteTag = field.prerequisiteTag;
+           var geom = _geometry ? _geometry.apply(this, arguments) : null;
 
-           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 (geom === 'relation' && p.tags && (p.tags.type === 'route' && p.tags.route && routeSegments[p.tags.route] || p.tags.type === 'waterway')) {
+             geom = 'route';
+           }
 
-               if (prerequisiteTag.key) {
-                 var value = entity.tags[prerequisiteTag.key];
-                 if (!value) return false;
+           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) : {};
 
-                 if (prerequisiteTag.valueNot) {
-                   return prerequisiteTag.valueNot !== value;
-                 }
+           for (var k in tags) {
+             if (tags[k] === '*') {
+               tags[k] = 'yes';
+             }
+           }
 
-                 if (prerequisiteTag.value) {
-                   return prerequisiteTag.value === value;
-                 }
-               } else if (prerequisiteTag.keyNot) {
-                 if (entity.tags[prerequisiteTag.keyNot]) return false;
-               }
+           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);
+         }
 
-               return true;
-             })) return false;
-           }
+         presetIcon.preset = function (val) {
+           if (!arguments.length) return _preset;
+           _preset = utilFunctor(val);
+           return presetIcon;
+         };
 
-           return true;
+         presetIcon.geometry = function (val) {
+           if (!arguments.length) return _geometry;
+           _geometry = utilFunctor(val);
+           return presetIcon;
          };
 
-         field.focus = function () {
-           if (field.impl) {
-             field.impl.focus();
-           }
+         presetIcon.sizeClass = function (val) {
+           if (!arguments.length) return _sizeClass;
+           _sizeClass = val;
+           return presetIcon;
          };
 
-         return utilRebind(field, dispatch, 'on');
+         return presetIcon;
        }
 
-       function uiFormFields(context) {
-         var moreCombo = uiCombobox(context, 'more-fields').minItems(1);
-         var _fieldsArr = [];
-         var _lastPlaceholder = '';
-         var _state = '';
-         var _klass = '';
+       function uiSectionFeatureType(context) {
+         var dispatch = dispatch$8('choose');
+         var _entityIDs = [];
+         var _presets = [];
 
-         function formFields(selection) {
-           var allowedFields = _fieldsArr.filter(function (field) {
-             return field.isAllowed();
-           });
+         var _tagReference;
 
-           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 section = uiSection('feature-type', context).label(_t.html('inspector.feature_type')).disclosureContent(renderDisclosureContent);
 
-           var enter = fields.enter().append('div').attr('class', function (d) {
-             return 'wrap-form-field wrap-form-field-' + d.safeid;
-           }); // Update
+         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
 
-           fields = fields.merge(enter);
-           fields.order().each(function (d) {
-             select(this).call(d.render);
+           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);
+           }
+
+           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();
            });
-           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 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 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
+           nameparts.exit().remove();
+           nameparts.enter().append('div').attr('class', 'namepart').html(function (d) {
+             return d;
+           });
+         }
 
-             var field = d.field;
-             field.show();
-             selection.call(formFields); // rerender
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return section;
+         };
 
-             field.focus();
-           })); // avoid updating placeholder excessively (triggers style recalc)
+         section.presets = function (val) {
+           if (!arguments.length) return _presets; // don't reload the same preset
 
-           if (_lastPlaceholder !== placeholder) {
-             input.attr('placeholder', placeholder);
-             _lastPlaceholder = placeholder;
+           if (!utilArrayIdentical(val, _presets)) {
+             _presets = val;
+
+             if (_presets.length === 1) {
+               _tagReference = uiTagReference(_presets[0].reference()).showing(false);
+             }
            }
-         }
 
-         formFields.fieldsArr = function (val) {
-           if (!arguments.length) return _fieldsArr;
-           _fieldsArr = val || [];
-           return formFields;
+           return section;
          };
 
-         formFields.state = function (val) {
-           if (!arguments.length) return _state;
-           _state = val;
-           return formFields;
-         };
+         function entityGeometries() {
+           var counts = {};
 
-         formFields.klass = function (val) {
-           if (!arguments.length) return _klass;
-           _klass = val;
-           return formFields;
-         };
+           for (var i in _entityIDs) {
+             var geometry = context.graph().geometry(_entityIDs[i]);
+             if (!counts[geometry]) counts[geometry] = 0;
+             counts[geometry] += 1;
+           }
 
-         return formFields;
+           return Object.keys(counts).sort(function (geom1, geom2) {
+             return counts[geom2] - counts[geom1];
+           });
+         }
+
+         return utilRebind(section, dispatch, 'on');
        }
 
        function uiSectionPresetFields(context) {
            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'),
+           return _t.html('inspector.title_count', {
+             title: {
+               html: _t.html('inspector.members')
+             },
              count: count
            });
          }).disclosureContent(renderDisclosureContent);
              context.map().zoomToEase(entity);
            }
 
-           context.enter(modeSelect(context, [d.id]));
+           context.enter(modeSelect(context, [d.id]));
+         }
+
+         function changeRole(d3_event, d) {
+           var oldRole = d.role;
+           var newRole = context.cleanRelationRole(select(this).property('value'));
+
+           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();
+           }
+         }
+
+         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
+           }));
+
+           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 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 (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').text(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').text(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').call(_t.append('inspector.' + d.type, {
+                 id: d.id
+               }));
+               labelText.append('span').attr('class', 'member-entity-name').call(_t.append('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);
+
+           if (taginfo) {
+             wrapEnter.each(bindTypeahead);
+           } // update
+
+
+           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;
+                 }
+
+                 return 'translateY(-100%)';
+               } else if (index2 < index && d3_event.y < node.offsetTop + node.offsetHeight) {
+                 if (targetIndex === null || index2 < targetIndex) {
+                   targetIndex = index2;
+                 }
+
+                 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);
+
+             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();
+             }
+           }));
+
+           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 = [];
+
+               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) {
+               // 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;
+
+               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';
+               }
+
+               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 unbind() {
+             var row = select(this);
+             row.selectAll('input.member-role').call(uiCombobox.off, context);
+           }
+         }
+
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return section;
+         };
+
+         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);
+           }
+
+           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.html('inspector.title_count', {
+             title: {
+               html: _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;
+
+         var _maxMemberships = 1000;
+
+         function getSharedParentRelations() {
+           var parents = [];
+
+           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));
+             }
+
+             if (!parents.length) break;
+           }
+
+           return parents;
+         }
+
+         function getMemberships() {
+           var memberships = [];
+           var relations = getSharedParentRelations().slice(0, _maxMemberships);
+           var isMultiselect = _entityIDs.length > 1;
+           var i, relation, membership, index, member, indexedMember;
+
+           for (i = 0; i < relations.length; i++) {
+             relation = relations[i];
+             membership = {
+               relation: relation,
+               members: [],
+               hash: osmEntity.key(relation)
+             };
+
+             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();
+
+                 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 (membership.members.length) memberships.push(membership);
+           }
+
+           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 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 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
+
+           utilHighlightEntities([d.relation.id], true, context);
+         }
+
+         function changeRole(d3_event, d) {
+           if (d === 0) return; // called on newrow (shouldn't happen)
+
+           if (_inChange) return; // avoid accidental recursive call #5731
+
+           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;
+           });
+
+           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();
+           }
+
+           _inChange = false;
          }
 
-         function changeRole(d3_event, d) {
-           var oldRole = d.role;
-           var newRole = context.cleanRelationRole(select(this).property('value'));
+         function addMembership(d, role) {
+           this.blur(); // avoid keeping focus on the button
 
-           if (oldRole !== newRole) {
-             var member = {
-               id: d.id,
-               type: d.type,
-               role: newRole
+           _showBlank = false;
+
+           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 graph;
              };
-             context.perform(actionChangeMember(d.relation.id, member, d.index), _t('operations.change_role.annotation', {
-               n: 1
+           }
+
+           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`
+
+             context.enter(modeSelect(context, [relation.id]).newFeature(true));
            }
          }
 
-         function deleteMember(d3_event, d) {
+         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.id], false, context);
-           context.perform(actionDeleteMember(d.relation.id, d.index), _t('operations.delete_member.annotation', {
-             n: 1
+
+           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();
+         }
 
-           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));
+         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();
+
+           function baseDisplayLabel(entity) {
+             var matched = _mainPresetIndex.match(entity, graph);
+             var presetName = matched && matched.name() || _t('inspector.relation');
+             var entityName = utilDisplayName(entity) || '';
+             return presetName + ' ' + entityName;
+           }
+
+           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
+             });
            } else {
-             // Changing the mode also runs `validate`, but otherwise we need to
-             // rerun it manually
-             context.validator().validate();
+             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;
+               });
+             });
            }
+
+           result.forEach(function (obj) {
+             obj.title = obj.value;
+           });
+           result.unshift(newRelation);
+           callback(result);
          }
 
          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 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').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;
+           var items = list.selectAll('li.member-row-normal').data(memberships, function (d) {
+             return d.hash;
            });
-           itemsEnter.each(function (d) {
-             var item = select(this);
-             var label = item.append('label').attr('class', 'field-label').attr('for', d.domId);
+           items.exit().each(unbind).remove(); // Enter
 
-             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 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);
+           });
+           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').text(function (d) {
+             var matched = _mainPresetIndex.match(d.relation, context.graph());
+             return matched && matched.name() || _t.html('inspector.relation');
+           });
+           labelLink.append('span').attr('class', 'member-entity-name').text(function (d) {
+             return utilDisplayName(d.relation);
            });
+           labelEnter.append('button').attr('class', 'remove member-delete').attr('title', _t('icons.remove')).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').attr('placeholder', _t('inspector.role')).call(utilNoAuto);
+           }).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);
 
            if (taginfo) {
              wrapEnter.each(bindTypeahead);
-           } // update
+           }
 
+           var newMembership = list.selectAll('.member-row-new').data(_showBlank ? [0] : []); // Exit
 
-           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();
+           newMembership.exit().remove(); // Enter
 
-               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 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').attr('title', _t('icons.remove')).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
 
-                 return 'translateY(-100%)';
-               } else if (index2 < index && d3_event.y < node.offsetTop + node.offsetHeight) {
-                 if (targetIndex === null || index2 < targetIndex) {
-                   targetIndex = index2;
-                 }
+           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
 
-                 return 'translateY(100%)';
-               }
+           var addRow = selection.selectAll('.add-row').data([0]); // enter
 
-               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 addRowEnter = addRow.enter().append('div').attr('class', 'add-row');
+           var addRelationButton = addRowEnter.append('button').attr('class', 'add-relation').attr('aria-label', _t('inspector.add_to_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
 
-             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();
-             }
-           }));
+           addRowEnter.append('div').attr('class', 'space-buttons'); // preserve space
+           // update
+
+           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
+
+
+             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.surface().selectAll('.highlighted').classed('highlighted', false);
+           }
 
            function bindTypeahead(d) {
              var row = select(this);
              }
 
              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;
-
-               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';
-               }
-
-               var rtype = entity.tags.type;
+               var rtype = d.relation.tags.type;
                taginfo.roles({
                  debounce: true,
                  rtype: rtype || '',
-                 geometry: geometry,
+                 geometry: context.graph().geometry(_entityIDs[0]),
                  query: role
                }, function (err, data) {
                  if (!err) callback(sort(role, data));
              }));
            }
 
-           function unbind() {
-             var row = select(this);
-             row.selectAll('input.member-role').call(uiCombobox.off, context);
+           function unbind() {
+             var row = select(this);
+             row.selectAll('input.member-role').call(uiCombobox.off, context);
+           }
+         }
+
+         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.html('inspector.title_count', {
+             title: {
+               html: _t.html('inspector.features')
+             },
+             count: _selectedIDs.length
+           });
+         }).disclosureContent(renderDisclosureContent);
+         context.history().on('change.selectionList', function (difference) {
+           if (difference) {
+             section.reRender();
+           }
+         });
+
+         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 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);
+             });
+           });
+           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
+
+           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').text(function (entity) {
+             return _mainPresetIndex.match(entity, context.graph()).name();
+           });
+           items.selectAll('.entity-name').text(function (d) {
+             // fetch latest entity
+             var entity = context.entity(d.id);
+             return utilDisplayName(entity);
+           });
+         }
+
+         return section;
+       }
+
+       function uiEntityEditor(context) {
+         var dispatch = dispatch$8('choose');
+         var _state = 'select';
+         var _coalesceChanges = false;
+         var _modified = false;
+
+         var _base;
+
+         var _entityIDs;
+
+         var _activePresets = [];
+
+         var _newFeature;
+
+         var _sections;
+
+         function entityEditor(selection) {
+           var combinedTags = utilCombinedTags(_entityIDs, context.graph()); // Header
+
+           var header = selection.selectAll('.header').data([0]); // Enter
+
+           var headerEnter = header.enter().append('div').attr('class', 'header fillL');
+           var direction = _mainLocalizer.textDirection() === 'rtl' ? 'forward' : 'backward';
+           headerEnter.append('button').attr('class', 'preset-reset preset-choose').attr('title', _t("icons.".concat(direction))).call(svgIcon("#iD-icon-".concat(direction)));
+           headerEnter.append('button').attr('class', 'close').attr('title', _t('icons.close')).on('click', function () {
+             context.enter(modeBrowse(context));
+           }).call(svgIcon(_modified ? '#iD-icon-apply' : '#iD-icon-close'));
+           headerEnter.append('h2'); // Update
+
+           header = header.merge(headerEnter);
+           header.selectAll('h2').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)];
+           }
+
+           _sections.forEach(function (section) {
+             if (section.entityIDs) {
+               section.entityIDs(_entityIDs);
+             }
+
+             if (section.presets) {
+               section.presets(_activePresets);
+             }
+
+             if (section.tags) {
+               section.tags(combinedTags);
+             }
+
+             if (section.state) {
+               section.state(_state);
+             }
+
+             body.call(section.render);
+           });
+
+           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);
+
+             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.
+
+
+         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 (_typeof(v) === 'object') {
+                 // a "key only" tag change
+                 tags[k] = tags[v.oldKey];
+               } else if (v !== undefined || tags.hasOwnProperty(k)) {
+                 tags[k] = v;
+               }
+             }
+
+             if (!onInput) {
+               tags = utilCleanTags(tags);
+             }
+
+             if (!fastDeepEqual(entity.tags, tags)) {
+               actions.push(actionChangeTags(entityID, tags));
+             }
+           }
+
+           if (actions.length) {
+             var combinedAction = function combinedAction(graph) {
+               actions.forEach(function (action) {
+                 graph = action(graph);
+               });
+               return graph;
+             };
+
+             var annotation = _t('operations.change_tags.annotation');
+
+             if (_coalesceChanges) {
+               context.overwrite(combinedAction, annotation);
+             } else {
+               context.perform(combinedAction, annotation);
+               _coalesceChanges = !!onInput;
+             }
+           } // if leaving field (blur event), rerun validation
+
+
+           if (!onInput) {
+             context.validator().validate();
            }
          }
 
-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return section;
-         };
+         function revertTags(keys) {
+           var actions = [];
 
-         return section;
-       }
+           for (var i in _entityIDs) {
+             var entityID = _entityIDs[i];
+             var original = context.graph().base().entities[entityID];
+             var changed = {};
 
-       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 j in keys) {
+               var key = keys[j];
+               changed[key] = original ? original.tags[key] : undefined;
+             }
 
-           for (var i in memberIndexes) {
-             graph = actionDeleteMember(relationId, memberIndexes[i])(graph);
-           }
+             var entity = context.entity(entityID);
+             var tags = Object.assign({}, entity.tags); // shallow copy
 
-           return graph;
-         };
-       }
+             for (var k in changed) {
+               if (!k) continue;
+               var v = changed[k];
 
-       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 = [];
+               if (v !== undefined || tags.hasOwnProperty(k)) {
+                 tags[k] = v;
+               }
+             }
 
-         var _showBlank;
+             tags = utilCleanTags(tags);
 
-         var _maxMemberships = 1000;
+             if (!fastDeepEqual(entity.tags, tags)) {
+               actions.push(actionChangeTags(entityID, tags));
+             }
+           }
 
-         function getSharedParentRelations() {
-           var parents = [];
+           if (actions.length) {
+             var combinedAction = function combinedAction(graph) {
+               actions.forEach(function (action) {
+                 graph = action(graph);
+               });
+               return graph;
+             };
 
-           for (var i = 0; i < _entityIDs.length; i++) {
-             var entity = context.graph().hasEntity(_entityIDs[i]);
-             if (!entity) continue;
+             var annotation = _t('operations.change_tags.annotation');
 
-             if (i === 0) {
-               parents = context.graph().parentRelations(entity);
+             if (_coalesceChanges) {
+               context.overwrite(combinedAction, annotation);
              } else {
-               parents = utilArrayIntersection(parents, context.graph().parentRelations(entity));
+               context.perform(combinedAction, annotation);
+               _coalesceChanges = false;
              }
-
-             if (!parents.length) break;
            }
 
-           return parents;
+           context.validator().validate();
          }
 
-         function getMemberships() {
-           var memberships = [];
-           var relations = getSharedParentRelations().slice(0, _maxMemberships);
-           var isMultiselect = _entityIDs.length > 1;
-           var i, relation, membership, index, member, indexedMember;
+         entityEditor.modified = function (val) {
+           if (!arguments.length) return _modified;
+           _modified = val;
+           return entityEditor;
+         };
 
-           for (i = 0; i < relations.length; i++) {
-             relation = relations[i];
-             membership = {
-               relation: relation,
-               members: [],
-               hash: osmEntity.key(relation)
-             };
+         entityEditor.state = function (val) {
+           if (!arguments.length) return _state;
+           _state = val;
+           return entityEditor;
+         };
 
-             for (index = 0; index < relation.members.length; index++) {
-               member = relation.members[index];
+         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 (_entityIDs.indexOf(member.id) !== -1) {
-                 indexedMember = Object.assign({}, member, {
-                   index: index
-                 });
-                 membership.members.push(indexedMember);
-                 membership.hash += ',' + index.toString();
+           _base = context.graph();
+           _coalesceChanges = false;
+           if (val && _entityIDs && utilArrayIdentical(_entityIDs, val)) return entityEditor; // exit early if no change
 
-                 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)
-                   };
-                 }
-               }
-             }
+           _entityIDs = val;
+           loadActivePresets(true);
+           return entityEditor.modified(false);
+         };
 
-             if (membership.members.length) memberships.push(membership);
+         entityEditor.newFeature = function (val) {
+           if (!arguments.length) return _newFeature;
+           _newFeature = val;
+           return entityEditor;
+         };
+
+         function loadActivePresets(isForNewSelection) {
+           var graph = context.graph();
+           var counts = {};
+
+           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;
            }
 
-           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;
+           var matches = Object.keys(counts).sort(function (p1, p2) {
+             return counts[p2] - counts[p1];
+           }).map(function (pID) {
+             return _mainPresetIndex.item(pID);
            });
-           return memberships;
-         }
-
-         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]));
-         }
+           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 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
+             if (weakPreset && matches.length === 1 && matches[0].isFallback()) return;
+           }
 
-           utilHighlightEntities([d.relation.id], true, context);
+           entityEditor.presets(matches);
          }
 
-         function changeRole(d3_event, d) {
-           if (d === 0) return; // called on newrow (shouldn't happen)
+         entityEditor.presets = function (val) {
+           if (!arguments.length) return _activePresets; // don't reload the same preset
 
-           if (_inChange) return; // avoid accidental recursive call #5731
+           if (!utilArrayIdentical(val, _activePresets)) {
+             _activePresets = val;
+           }
 
-           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;
-           });
+           return entityEditor;
+         };
 
-           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();
-           }
+         return utilRebind(entityEditor, dispatch, 'on');
+       }
 
-           _inChange = false;
-         }
+       var sexagesimal = {exports: {}};
 
-         function addMembership(d, role) {
-           this.blur(); // avoid keeping focus on the button
+       sexagesimal.exports = element;
+       var pair_1 = sexagesimal.exports.pair = pair;
+       sexagesimal.exports.format = format;
+       sexagesimal.exports.formatPair = formatPair;
+       sexagesimal.exports.coordToDMS = coordToDMS;
 
-           _showBlank = false;
+       function element(input, dims) {
+         var result = search(input, dims);
+         return result === null ? null : result.val;
+       }
 
-           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);
-               }
+       function formatPair(input) {
+         return format(input.lat, 'lat') + ' ' + format(input.lon, 'lon');
+       } // Is 0 North or South?
 
-               return graph;
-             };
-           }
 
-           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 format(input, dim) {
+         var dms = coordToDMS(input, dim);
+         return dms.whole + '° ' + (dms.minutes ? dms.minutes + '\' ' : '') + (dms.seconds ? dms.seconds + '" ' : '') + dms.dir;
+       }
 
-             context.enter(modeSelect(context, [relation.id]).newFeature(true));
-           }
-         }
+       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
+         };
+       }
 
-         function deleteMembership(d3_event, d) {
-           this.blur(); // avoid keeping focus on the button
+       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
 
-           if (d === 0) return; // called on newrow (shouldn't happen)
-           // remove the hover-highlight styling
+         var matched = m[0]; // extract dimension.. m[1] = leading, m[5] = trailing
 
-           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();
-         }
+         var dim;
 
-         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 (m[1] && m[5]) {
+           // if matched both..
+           dim = m[1]; // keep leading
 
-           function baseDisplayLabel(entity) {
-             var matched = _mainPresetIndex.match(entity, graph);
-             var presetName = matched && matched.name() || _t('inspector.relation');
-             var entityName = utilDisplayName(entity) || '';
-             return presetName + ' ' + entityName;
-           }
+           matched = matched.slice(0, -1); // remove trailing dimension from match
+         } else {
+           dim = m[1] || m[5];
+         } // if unrecognized dimension
 
-           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
-             });
-           } 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
+         if (dim && dims.indexOf(dim) === -1) return null; // extract DMS
 
-             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 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)
+         };
+       }
 
-           result.forEach(function (obj) {
-             obj.title = obj.value;
-           });
-           result.unshift(newRelation);
-           callback(result);
+       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;
+
+         if (one.dim) {
+           return swapdim(one.val, two.val, one.dim);
+         } else {
+           return [one.val, two.val];
          }
+       }
 
-         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
+       function swapdim(a, b, dim) {
+         if (dim === 'N' || dim === 'S') return [a, b];
+         if (dim === 'W' || dim === 'E') return [b, a];
+       }
 
-           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
+       function uiFeatureList(context) {
+         var _geocodeResults;
 
-           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);
+         function featureList(selection) {
+           var header = selection.append('div').attr('class', 'header fillL');
+           header.append('h2').call(_t.append('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 (taginfo) {
-             wrapEnter.each(bindTypeahead);
+           function focusSearch(d3_event) {
+             var mode = context.mode() && context.mode().id;
+             if (mode !== 'browse') return;
+             d3_event.preventDefault();
+             search.node().focus();
            }
 
-           var newMembership = list.selectAll('.member-row-new').data(_showBlank ? [0] : []); // Exit
+           function keydown(d3_event) {
+             if (d3_event.keyCode === 27) {
+               // escape
+               search.node().blur();
+             }
+           }
 
-           newMembership.exit().remove(); // Enter
+           function keypress(d3_event) {
+             var q = search.property('value'),
+                 items = list.selectAll('.feature-list-item');
 
-           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
+             if (d3_event.keyCode === 13 && // ↩ Return
+             q.length && items.size()) {
+               click(d3_event, items.datum());
+             }
+           }
 
-           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
+           function inputevent() {
+             _geocodeResults = undefined;
+             drawList();
+           }
 
-           var addRow = selection.selectAll('.add-row').data([0]); // enter
+           function clearSearch() {
+             search.property('value', '');
+             drawList();
+           }
 
-           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 mapDrawn(e) {
+             if (e.full) {
+               drawList();
+             }
+           }
 
-           addRowEnter.append('div').attr('class', 'space-buttons'); // preserve space
-           // update
+           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*)$/);
 
-           addRow = addRow.merge(addRowEnter);
-           addRow.select('.add-relation').on('click', function () {
-             _showBlank = true;
-             section.reRender();
-             list.selectAll('.member-entity-input').node().focus();
-           });
+             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 acceptEntity(d) {
-             if (!d) {
-               cancelEntity();
-               return;
-             } // remove hover-higlighting
 
+             var idMatch = !locationMatch && q.match(/(?:^|\W)(node|way|relation|[nwr])\W?0*([1-9]\d*)(?:\W|$)/i);
 
-             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);
-           }
+             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 cancelEntity() {
-             var input = newMembership.selectAll('.member-entity-input');
-             input.property('value', ''); // remove hover-higlighting
+             var allEntities = graph.entities;
+             var localResults = [];
 
-             context.surface().selectAll('.highlighted').classed('highlighted', false);
-           }
+             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 bindTypeahead(d) {
-             var row = select(this);
-             var role = row.selectAll('input.member-role');
-             var origValue = role.property('value');
+             localResults = localResults.sort(function byDistance(a, b) {
+               return a.distance - b.distance;
+             });
+             result = result.concat(localResults);
 
-             function sort(value, data) {
-               var sameletter = [];
-               var other = [];
+             (_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
+                 };
 
-               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 (d.osm_type === 'way') {
+                   // for ways, add some fake closed nodes
+                   attrs.nodes = ['a', 'a']; // so that geometry area is possible
                  }
-               }
 
-               return sameletter.concat(other);
-             }
+                 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])])
+                 });
+               }
+             });
 
-             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));
+             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
                });
-             }).on('cancel', function () {
-               role.property('value', origValue);
-             }));
-           }
+               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
+               });
+             }
 
-           function unbind() {
-             var row = select(this);
-             row.selectAll('input.member-role').call(uiCombobox.off, context);
+             return result;
            }
-         }
 
-         section.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           _showBlank = false;
-           return section;
-         };
+           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('').call(_t.append('geocoder.no_results_worldwide'));
 
-         return section;
-       }
+             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').call(_t.append('geocoder.search'));
+             }
 
-       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();
+             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').text(function (d) {
+               return d.type;
+             });
+             label.append('span').attr('class', 'entity-name').text(function (d) {
+               return d.name;
+             });
+             enter.style('opacity', 0).transition().style('opacity', 1);
+             items.order();
+             items.exit().remove();
            }
-         });
-
-         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 mouseover(d3_event, d) {
+             if (d.id === -1) return;
+             utilHighlightEntities([d.id], true, context);
            }
-         }
 
-         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);
+           function mouseout(d3_event, d) {
+             if (d.id === -1) return;
+             utilHighlightEntities([d.id], false, context);
+           }
 
-           var items = list.selectAll('.feature-list-item').data(entities, osmEntity.key);
-           items.exit().remove(); // Enter
+           function click(d3_event, d) {
+             d3_event.preventDefault();
 
-           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 () {
+             if (d.location) {
+               context.map().centerZoomEase([d.location[1], d.location[0]], 19);
+             } else if (d.entity) {
                utilHighlightEntities([d.id], false, context);
-             });
-           });
-           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
+               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);
+             }
+           }
 
-           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 geocoderSearch() {
+             services.geocoder.search(search.property('value'), function (err, resp) {
+               _geocodeResults = resp || [];
+               drawList();
+             });
+           }
          }
 
-         return section;
+         return featureList;
        }
 
-       function uiEntityEditor(context) {
-         var dispatch = dispatch$8('choose');
-         var _state = 'select';
-         var _coalesceChanges = false;
-         var _modified = false;
+       function uiImproveOsmComments() {
+         var _qaItem;
 
-         var _base;
+         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
 
-         var _entityIDs;
+           services.improveOSM.getComments(_qaItem).then(function (d) {
+             if (!d.comments) return; // nothing to do here
 
-         var _activePresets = [];
+             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);
 
-         var _newFeature;
+               if (osm && d.username) {
+                 selection = selection.append('a').attr('class', 'comment-author-link').attr('href', osm.userURL(d.username)).attr('target', '_blank');
+               }
 
-         var _sections;
+               selection.text(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').text(function (d) {
+               return d.text;
+             });
+           })["catch"](function (err) {
+             console.log(err); // eslint-disable-line no-console
+           });
+         }
 
-         function entityEditor(selection) {
-           var combinedTags = utilCombinedTags(_entityIDs, context.graph()); // Header
+         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
 
-           var header = selection.selectAll('.header').data([0]); // Enter
+           if (isNaN(d.getTime())) return null;
+           return d.toLocaleDateString(_mainLocalizer.localeCode(), options);
+         }
 
-           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
+         issueComments.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return issueComments;
+         };
 
-           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
+         return issueComments;
+       }
 
-           var body = selection.selectAll('.inspector-body').data([0]); // Enter
+       function uiImproveOsmDetails(context) {
+         var _qaItem;
 
-           var bodyEnter = body.enter().append('div').attr('class', 'entity-editor inspector-body sep-top'); // Update
+         function issueDetail(d) {
+           if (d.desc) return d.desc;
+           var issueKey = d.issueKey;
+           d.replacements = d.replacements || {};
+           d.replacements["default"] = {
+             html: _t.html('inspector.unknown')
+           }; // special key `default` works as a fallback string
 
-           body = body.merge(bodyEnter);
+           return _t.html("QA.improveOSM.error_types.".concat(issueKey, ".description"), d.replacements);
+         }
 
-           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)];
-           }
+         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
 
-           _sections.forEach(function (section) {
-             if (section.entityIDs) {
-               section.entityIDs(_entityIDs);
-             }
+           var descriptionEnter = detailsEnter.append('div').attr('class', 'qa-details-subsection');
+           descriptionEnter.append('h4').call(_t.append('QA.keepRight.detail_description'));
+           descriptionEnter.append('div').attr('class', 'qa-details-description-text').html(issueDetail); // If there are entity links in the error message..
 
-             if (section.presets) {
-               section.presets(_activePresets);
-             }
+           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 (section.tags) {
-               section.tags(combinedTags);
-             }
+             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 (section.state) {
-               section.state(_state);
-             }
+               if (!osmlayer.enabled()) {
+                 osmlayer.enabled(true);
+               }
 
-             body.call(section.render);
-           });
+               context.map().centerZoom(_qaItem.loc, 20);
 
-           context.history().on('change.entity-editor', historyChanged);
+               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)
 
-           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);
+             if (entity) {
+               var name = utilDisplayName(entity); // try to use common name
 
-             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);
+               if (!name && !isObjectLink) {
+                 var preset = _mainPresetIndex.match(entity, context.graph());
+                 name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
+               }
+
+               if (name) {
+                 this.innerText = name;
+               }
              }
-           }
-         } // 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.
+           }); // Don't hide entities related to this error - #5880
 
+           context.features().forceVisible(relatedEntities);
+           context.map().pan([0, 0]); // trigger a redraw
+         }
 
-         function changeTags(entityIDs, changed, onInput) {
-           var actions = [];
+         improveOsmDetails.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return improveOsmDetails;
+         };
 
-           for (var i in entityIDs) {
-             var entityID = entityIDs[i];
-             var entity = context.entity(entityID);
-             var tags = Object.assign({}, entity.tags); // shallow copy
+         return improveOsmDetails;
+       }
 
-             for (var k in changed) {
-               if (!k) continue;
-               var v = changed[k];
+       function uiImproveOsmHeader() {
+         var _qaItem;
 
-               if (v !== undefined || tags.hasOwnProperty(k)) {
-                 tags[k] = v;
-               }
-             }
+         function issueTitle(d) {
+           var issueKey = d.issueKey;
+           d.replacements = d.replacements || {};
+           d.replacements["default"] = {
+             html: _t.html('inspector.unknown')
+           }; // special key `default` works as a fallback string
 
-             if (!onInput) {
-               tags = utilCleanTags(tags);
-             }
+           return _t.html("QA.improveOSM.error_types.".concat(issueKey, ".title"), d.replacements);
+         }
 
-             if (!fastDeepEqual(entity.tags, tags)) {
-               actions.push(actionChangeTags(entityID, tags));
+         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;
+
+             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);
+         }
 
-           if (actions.length) {
-             var combinedAction = function combinedAction(graph) {
-               actions.forEach(function (action) {
-                 graph = action(graph);
-               });
-               return graph;
-             };
+         improveOsmHeader.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return improveOsmHeader;
+         };
 
-             var annotation = _t('operations.change_tags.annotation');
+         return improveOsmHeader;
+       }
 
-             if (_coalesceChanges) {
-               context.overwrite(combinedAction, annotation);
-             } else {
-               context.perform(combinedAction, annotation);
-               _coalesceChanges = !!onInput;
-             }
-           } // if leaving field (blur event), rerun validation
+       function uiImproveOsmEditor(context) {
+         var dispatch = dispatch$8('change');
+         var qaDetails = uiImproveOsmDetails(context);
+         var qaComments = uiImproveOsmComments();
+         var qaHeader = uiImproveOsmHeader();
 
+         var _qaItem;
 
-           if (!onInput) {
-             context.validator().validate();
-           }
+         function improveOsmEditor(selection) {
+           var headerEnter = selection.selectAll('.header').data([0]).enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'close').attr('title', _t('icons.close')).on('click', function () {
+             return context.enter(modeBrowse(context));
+           }).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h2').call(_t.append('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 revertTags(keys) {
-           var actions = [];
-
-           for (var i in _entityIDs) {
-             var entityID = _entityIDs[i];
-             var original = context.graph().base().entities[entityID];
-             var changed = {};
+         function improveOsmSaveSection(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
 
-             for (var j in keys) {
-               var key = keys[j];
-               changed[key] = original ? original.tags[key] : undefined;
-             }
+           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
 
-             var entity = context.entity(entityID);
-             var tags = Object.assign({}, entity.tags); // shallow copy
+           saveSection.exit().remove(); // enter
 
-             for (var k in changed) {
-               if (!k) continue;
-               var v = changed[k];
+           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf');
+           saveSectionEnter.append('h4').attr('class', '.qa-save-header').call(_t.append('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
 
-               if (v !== undefined || tags.hasOwnProperty(k)) {
-                 tags[k] = v;
-               }
-             }
+           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);
 
-             tags = utilCleanTags(tags);
+           function changeInput() {
+             var input = select(this);
+             var val = input.property('value').trim();
 
-             if (!fastDeepEqual(entity.tags, tags)) {
-               actions.push(actionChangeTags(entityID, tags));
-             }
-           }
+             if (val === '') {
+               val = undefined;
+             } // store the unsaved comment with the issue itself
 
-           if (actions.length) {
-             var combinedAction = function combinedAction(graph) {
-               actions.forEach(function (action) {
-                 graph = action(graph);
-               });
-               return graph;
-             };
 
-             var annotation = _t('operations.change_tags.annotation');
+             _qaItem = _qaItem.update({
+               newComment: val
+             });
+             var qaService = services.improveOSM;
 
-             if (_coalesceChanges) {
-               context.overwrite(combinedAction, annotation);
-             } else {
-               context.perform(combinedAction, annotation);
-               _coalesceChanges = false;
+             if (qaService) {
+               qaService.replaceItem(_qaItem);
              }
-           }
 
-           context.validator().validate();
+             saveSection.call(qaSaveButtons);
+           }
          }
 
-         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;
-         };
-
-         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
+         function qaSaveButtons(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
 
-           _base = context.graph();
-           _coalesceChanges = false;
-           if (val && _entityIDs && utilArrayIdentical(_entityIDs, val)) return entityEditor; // exit early if no change
+           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_qaItem] : [], function (d) {
+             return d.status + d.id;
+           }); // exit
 
-           _entityIDs = val;
-           loadActivePresets(true);
-           return entityEditor.modified(false);
-         };
+           buttonSection.exit().remove(); // enter
 
-         entityEditor.newFeature = function (val) {
-           if (!arguments.length) return _newFeature;
-           _newFeature = val;
-           return entityEditor;
-         };
+           var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
+           buttonEnter.append('button').attr('class', 'button comment-button action').call(_t.append('QA.keepRight.save_comment'));
+           buttonEnter.append('button').attr('class', 'button close-button action');
+           buttonEnter.append('button').attr('class', 'button ignore-button action'); // update
 
-         function loadActivePresets(isForNewSelection) {
-           var graph = context.graph();
-           var counts = {};
+           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
 
-           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 qaService = services.improveOSM;
 
-           var matches = Object.keys(counts).sort(function (p1, p2) {
-             return counts[p2] - counts[p1];
-           }).map(function (pID) {
-             return _mainPresetIndex.item(pID);
+             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
 
-           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")
+             var qaService = services.improveOSM;
 
-             if (weakPreset && matches.length === 1 && matches[0].isFallback()) return;
-           }
+             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
 
-           entityEditor.presets(matches);
-         }
+             var qaService = services.improveOSM;
 
-         entityEditor.presets = function (val) {
-           if (!arguments.length) return _activePresets; // don't reload the same preset
+             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
 
-           if (!utilArrayIdentical(val, _activePresets)) {
-             _activePresets = val;
-           }
 
-           return entityEditor;
+         improveOsmEditor.error = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return improveOsmEditor;
          };
 
-         return utilRebind(entityEditor, dispatch, 'on');
+         return utilRebind(improveOsmEditor, dispatch, 'on');
        }
 
        function uiPresetList(context) {
            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 () {
+           var message = messagewrap.append('h2').call(_t.append('inspector.choose'));
+           var direction = _mainLocalizer.textDirection() === 'rtl' ? 'backward' : 'forward';
+           messagewrap.append('button').attr('class', 'preset-choose').attr('title', direction).on('click', function () {
              dispatch.call('cancel', this);
-           }).call(svgIcon(_mainLocalizer.textDirection() === 'rtl' ? '#iD-icon-backward' : '#iD-icon-forward'));
+           }).call(svgIcon("#iD-icon-".concat(direction)));
 
            function initialKeydown(d3_event) {
              // hack to let delete shortcut work when search is autofocused
 
              if (value.length) {
                results = presets.search(value, entityGeometries()[0], _currLoc);
-               messageText = _t('inspector.results', {
+               messageText = _t.html('inspector.results', {
                  n: results.collection.length,
                  search: value
                });
              } else {
                results = _mainPresetIndex.defaults(entityGeometries()[0], 36, !context.inIntro(), _currLoc);
-               messageText = _t('inspector.choose');
+               messageText = _t.html('inspector.choose');
              }
 
              list.call(drawList, results);
 
            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);
+           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,
              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).classed('expanded', !isExpanded).attr('title', !isExpanded ? _t('icons.collapse') : _t('icons.expand'));
                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) {
+             var button = wrap.append('button').attr('class', 'preset-list-button').attr('title', _t('icons.expand')).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();
              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')
+                 features: {
+                   html: _t.html('feature.' + hiddenPresetFeaturesId + '.description')
+                 }
                })).placement(index < 2 ? 'bottom' : 'top'));
              }
            });
            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'));
+           linkEnter.append('span').call(_t.append('inspector.view_on_osm'));
          }
 
          viewOnOSM.what = function (_) {
 
          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;
-           }
-
-           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);
-           }
-
-           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])));
-         }
-
-         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);
-           });
-
-           if (presets) {
-             presetList.presets(presets);
-           }
-
-           presetPane.call(presetList.autofocus(true));
-         };
-
-         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);
-             });
-
-             if (preset) {
-               entityEditor.presets([preset]);
-             }
-
-             editorPane.call(entityEditor);
-           }
-         };
-
-         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
-
-           context.container().selectAll('.field-help-body').remove();
-           return inspector;
-         };
-
-         inspector.entityIDs = function (val) {
-           if (!arguments.length) return _entityIDs;
-           _entityIDs = val;
-           return inspector;
-         };
-
-         inspector.newFeature = function (val) {
-           if (!arguments.length) return _newFeature;
-           _newFeature = val;
-           return inspector;
-         };
-
-         return inspector;
-       }
-
-       function uiImproveOsmComments() {
-         var _qaItem;
-
-         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 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);
-         }
-
-         issueComments.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return issueComments;
-         };
-
-         return issueComments;
-       }
-
-       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
-
-           return _t.html("QA.improveOSM.error_types.".concat(issueKey, ".description"), d.replacements);
-         }
-
-         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 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 (!osmlayer.enabled()) {
-                 osmlayer.enabled(true);
-               }
-
-               context.map().centerZoom(_qaItem.loc, 20);
-
-               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 (entity) {
-               var name = utilDisplayName(entity); // try to use common name
-
-               if (!name && !isObjectLink) {
-                 var preset = _mainPresetIndex.match(entity, context.graph());
-                 name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
-               }
-
-               if (name) {
-                 this.innerText = name;
-               }
-             }
-           }); // Don't hide entities related to this error - #5880
-
-           context.features().forceVisible(relatedEntities);
-           context.map().pan([0, 0]); // trigger a redraw
-         }
-
-         improveOsmDetails.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return improveOsmDetails;
-         };
-
-         return improveOsmDetails;
-       }
-
-       function uiImproveOsmHeader() {
-         var _qaItem;
-
-         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);
-         }
-
-         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;
-
-             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);
-         }
-
-         improveOsmHeader.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return improveOsmHeader;
-         };
-
-         return improveOsmHeader;
-       }
-
-       function uiImproveOsmEditor(context) {
-         var dispatch = dispatch$8('change');
-         var qaDetails = uiImproveOsmDetails(context);
-         var qaComments = uiImproveOsmComments();
-         var qaHeader = uiImproveOsmHeader();
-
-         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 improveOsmSaveSection(selection) {
-           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
-
-           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 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');
 
-           saveSection.exit().remove(); // enter
+           function shouldDefaultToPresetList() {
+             // always show the inspector on hover
+             if (_state !== 'select') return false; // can only change preset on single selection
 
-           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
+             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
 
-           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);
+             if (entity.hasNonGeometryTags()) return false; // prompt to select preset if feature is new and untagged
 
-           function changeInput() {
-             var input = select(this);
-             var val = input.property('value').trim();
+             if (_newFeature) return true; // all existing features except vertices should default to inspector
 
-             if (val === '') {
-               val = undefined;
-             } // store the unsaved comment with the issue itself
+             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
 
-             _qaItem = _qaItem.update({
-               newComment: val
-             });
-             var qaService = services.improveOSM;
+             if (context.validator().getEntityIssues(entityID).length) return false; // show turn retriction editor for junction vertices
 
-             if (qaService) {
-               qaService.replaceItem(_qaItem);
-             }
+             if (entity.isHighwayIntersection(context.graph())) return false; // otherwise show preset list for uninteresting vertices
 
-             saveSection.call(qaSaveButtons);
+             return true;
            }
-         }
 
-         function qaSaveButtons(selection) {
-           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
+           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);
+           }
 
-           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_qaItem] : [], function (d) {
-             return d.status + d.id;
-           }); // exit
+           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])));
+         }
 
-           buttonSection.exit().remove(); // enter
+         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);
+           });
 
-           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 (presets) {
+             presetList.presets(presets);
+           }
 
-           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
+           presetPane.call(presetList.autofocus(true));
+         };
 
-             var qaService = services.improveOSM;
+         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);
+             });
 
-             if (qaService) {
-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch.call('change', item);
-               });
+             if (preset) {
+               entityEditor.presets([preset]);
              }
-           });
-           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;
 
-             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
+             editorPane.call(entityEditor);
+           }
+         };
 
-             var qaService = services.improveOSM;
+         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 (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
+           context.container().selectAll('.field-help-body').remove();
+           return inspector;
+         };
 
+         inspector.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
+           _entityIDs = val;
+           return inspector;
+         };
 
-         improveOsmEditor.error = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return improveOsmEditor;
+         inspector.newFeature = function (val) {
+           if (!arguments.length) return _newFeature;
+           _newFeature = val;
+           return inspector;
          };
 
-         return utilRebind(improveOsmEditor, dispatch, 'on');
+         return inspector;
        }
 
        function uiKeepRightDetails(context) {
          function issueDetail(d) {
            var itemType = d.itemType,
                parentIssueType = d.parentIssueType;
-           var unknown = _t.html('inspector.unknown');
+           var unknown = {
+             html: _t.html('inspector.unknown')
+           };
            var replacements = d.replacements || {};
            replacements["default"] = unknown; // special key `default` works as a fallback string
 
            var detail = _t.html("QA.keepRight.errorTypes.".concat(itemType, ".description"), replacements);
 
-           if (detail === unknown) {
+           if (detail === unknown.html) {
              detail = _t.html("QA.keepRight.errorTypes.".concat(parentIssueType, ".description"), replacements);
            }
 
            var detailsEnter = details.enter().append('div').attr('class', 'error-details qa-details-container'); // description
 
            var descriptionEnter = detailsEnter.append('div').attr('class', 'qa-details-subsection');
-           descriptionEnter.append('h4').html(_t.html('QA.keepRight.detail_description'));
+           descriptionEnter.append('h4').call(_t.append('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 = [];
                parentIssueType = d.parentIssueType;
            var unknown = _t.html('inspector.unknown');
            var replacements = d.replacements || {};
-           replacements["default"] = unknown; // special key `default` works as a fallback string
+           replacements["default"] = {
+             html: 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 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);
-         }
-
-         keepRightHeader.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return keepRightHeader;
-         };
-
-         return keepRightHeader;
-       }
-
-       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 viewOnKeepRight;
-       }
-
-       function uiKeepRightEditor(context) {
-         var dispatch = dispatch$8('change');
-         var qaDetails = uiKeepRightDetails(context);
-         var qaHeader = uiKeepRightHeader();
-
-         var _qaItem;
-
-         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 keepRightSaveSection(selection) {
-           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
-
-           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
-
-           saveSection.exit().remove(); // enter
-
-           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
-
-           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);
-
-           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
-
-
-             _qaItem = _qaItem.update({
-               newComment: val
-             });
-             var qaService = services.keepRight;
-
-             if (qaService) {
-               qaService.replaceItem(_qaItem); // update keepright cache
-             }
-
-             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
-
-           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
-
-           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;
-
-             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
-
-             var qaService = services.keepRight;
-
-             if (qaService) {
-               d.newStatus = 'ignore_t'; // ignore temporarily (item fixed)
-
-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch.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 qaService = services.keepRight;
-
-             if (qaService) {
-               d.newStatus = 'ignore'; // ignore permanently (false positive)
-
-               qaService.postUpdate(d, function (err, item) {
-                 return dispatch.call('change', item);
-               });
-             }
-           });
-         } // NOTE: Don't change method name until UI v3 is merged
-
-
-         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);
-           });
-           details.exit().remove();
-           var detailsEnter = details.enter().append('div').attr('class', 'error-details qa-details-container'); // Description
-
-           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)
-
-
-           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 (issueString(_qaItem, 'fix')) {
-             var _div = detailsEnter.append('div').attr('class', 'qa-details-subsection');
-
-             _div.append('h4').html(_t.html('QA.osmose.fix_title'));
-
-             _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)
-
-
-           if (issueString(_qaItem, 'trap')) {
-             var _div2 = detailsEnter.append('div').attr('class', 'qa-details-subsection');
-
-             _div2.append('h4').html(_t.html('QA.osmose.trap_title'));
-
-             _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
-
-
-           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
-
-               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 (!osmlayer.enabled()) {
-                   osmlayer.enabled(true);
-                 }
-
-                 context.map().centerZoom(d.loc, 20);
-
-                 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 (entity) {
-                 var name = utilDisplayName(entity); // try to use common name
-
-                 if (!name) {
-                   var preset = _mainPresetIndex.match(entity, context.graph());
-                   name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
-                 }
-
-                 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
-           });
-         }
-
-         osmoseDetails.issue = function (val) {
-           if (!arguments.length) return _qaItem;
-           _qaItem = val;
-           return osmoseDetails;
-         };
-
-         return osmoseDetails;
-       }
-
-       function uiOsmoseHeader() {
-         var _qaItem;
-
-         function issueTitle(d) {
-           var unknown = _t('inspector.unknown');
-           if (!d) return unknown; // Issue titles supplied by Osmose
-
-           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;
-
-             if (!picon) {
-               return '';
-             } else {
-               var isMaki = /^maki-/.test(picon);
-               return "#".concat(picon).concat(isMaki ? '-11' : '');
-             }
+           if (title !== unknown) {
+             return _t.apply("QA.keepRight.errorTypes.".concat(itemType, ".title"), replacements);
+           } else {
+             return _t.apply("QA.keepRight.errorTypes.".concat(parentIssueType, ".title"), replacements);
+           }
+         }
+
+         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);
          }
 
-         osmoseHeader.issue = function (val) {
+         keepRightHeader.issue = function (val) {
            if (!arguments.length) return _qaItem;
            _qaItem = val;
-           return osmoseHeader;
+           return keepRightHeader;
          };
 
-         return osmoseHeader;
+         return keepRightHeader;
        }
 
-       function uiViewOnOsmose() {
+       function uiViewOnKeepRight() {
          var _qaItem;
 
-         function viewOnOsmose(selection) {
+         function viewOnKeepRight(selection) {
            var url;
 
-           if (services.osmose && _qaItem instanceof QAItem) {
-             url = services.osmose.itemURL(_qaItem);
+           if (services.keepRight && _qaItem instanceof QAItem) {
+             url = services.keepRight.issueURL(_qaItem);
            }
 
-           var link = selection.selectAll('.view-on-osmose').data(url ? [url] : []); // exit
+           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-osmose').attr('target', '_blank').attr('rel', 'noopener') // security measure
+           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_osmose'));
+           linkEnter.append('span').call(_t.append('inspector.view_on_keepRight'));
          }
 
-         viewOnOsmose.what = function (val) {
+         viewOnKeepRight.what = function (val) {
            if (!arguments.length) return _qaItem;
            _qaItem = val;
-           return viewOnOsmose;
+           return viewOnKeepRight;
          };
 
-         return viewOnOsmose;
+         return viewOnKeepRight;
        }
 
-       function uiOsmoseEditor(context) {
+       function uiKeepRightEditor(context) {
          var dispatch = dispatch$8('change');
-         var qaDetails = uiOsmoseDetails(context);
-         var qaHeader = uiOsmoseHeader();
+         var qaDetails = uiKeepRightDetails(context);
+         var qaHeader = uiKeepRightHeader();
 
          var _qaItem;
 
-         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 () {
+         function keepRightEditor(selection) {
+           var headerEnter = selection.selectAll('.header').data([0]).enter().append('div').attr('class', 'header fillL');
+           headerEnter.append('button').attr('class', 'close').attr('title', _t('icons.close')).on('click', function () {
              return context.enter(modeBrowse(context));
            }).call(svgIcon('#iD-icon-close'));
-           headerEnter.append('h3').html(_t.html('QA.osmose.title'));
+           headerEnter.append('h2').call(_t.append('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(osmoseSaveSection);
+           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(uiViewOnOsmose().what(_qaItem));
+           footer.enter().append('div').attr('class', 'footer').merge(footer).call(uiViewOnKeepRight().what(_qaItem));
          }
 
-         function osmoseSaveSection(selection) {
+         function keepRightSaveSection(selection) {
            var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
 
-           var isShown = _qaItem && isSelected;
+           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
 
            saveSection.exit().remove(); // enter
 
-           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf'); // update
+           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf');
+           saveSectionEnter.append('h4').attr('class', '.qa-save-header').call(_t.append('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
 
            saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);
+
+           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
+
+
+             _qaItem = _qaItem.update({
+               newComment: val
+             });
+             var qaService = services.keepRight;
+
+             if (qaService) {
+               qaService.replaceItem(_qaItem); // update keepright cache
+             }
+
+             saveSection.call(qaSaveButtons);
+           }
          }
 
          function qaSaveButtons(selection) {
            buttonSection.exit().remove(); // enter
 
            var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
+           buttonEnter.append('button').attr('class', 'button comment-button action').call(_t.append('QA.keepRight.save_comment'));
            buttonEnter.append('button').attr('class', 'button close-button action');
            buttonEnter.append('button').attr('class', 'button ignore-button action'); // update
 
            buttonSection = buttonSection.merge(buttonEnter);
-           buttonSection.select('.close-button').html(_t.html('QA.keepRight.close')).on('click.close', function (d3_event, d) {
+           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.osmose;
+             var qaService = services.keepRight;
 
              if (qaService) {
-               d.newStatus = 'done';
                qaService.postUpdate(d, function (err, item) {
                  return dispatch.call('change', item);
                });
              }
            });
-           buttonSection.select('.ignore-button').html(_t.html('QA.keepRight.ignore')).on('click.ignore', function (d3_event, d) {
+           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
+
+             var qaService = services.keepRight;
+
+             if (qaService) {
+               d.newStatus = 'ignore_t'; // ignore temporarily (item fixed)
+
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.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 qaService = services.osmose;
+             var qaService = services.keepRight;
 
              if (qaService) {
-               d.newStatus = 'false';
+               d.newStatus = 'ignore'; // ignore permanently (false positive)
+
                qaService.postUpdate(d, function (err, item) {
                  return dispatch.call('change', item);
                });
          } // NOTE: Don't change method name until UI v3 is merged
 
 
-         osmoseEditor.error = function (val) {
+         keepRightEditor.error = function (val) {
            if (!arguments.length) return _qaItem;
            _qaItem = val;
-           return osmoseEditor;
+           return keepRightEditor;
          };
 
-         return utilRebind(osmoseEditor, dispatch, 'on');
+         return utilRebind(keepRightEditor, dispatch, 'on');
+       }
+
+       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());
+         };
+
+         lasso.p = function (_) {
+           if (!arguments.length) return lasso;
+           lasso.coordinates.push(_);
+           draw();
+           return lasso;
+         };
+
+         lasso.close = function () {
+           if (group) {
+             group.call(uiToggle(false, function () {
+               select(this).remove();
+             }));
+           }
+
+           context.container().classed('lasso', false);
+         };
+
+         return lasso;
        }
 
        function uiNoteComments() {
                selection = selection.append('a').attr('class', 'comment-author-link').attr('href', osm.userURL(d.user)).attr('target', '_blank');
              }
 
-             selection.html(function (d) {
-               return d.user || _t.html('note.anonymous');
-             });
+             if (d.user) {
+               selection.text(d.user);
+             } else {
+               selection.call(_t.append('note.anonymous'));
+             }
            });
            metadataEnter.append('div').attr('class', 'comment-date').html(function (d) {
-             return _t('note.status.' + d.action, {
+             return _t.html('note.status.' + d.action, {
                when: localeDateString(d.date)
              });
            });
                statusIcon = '#iD-icon-apply';
              }
 
-             iconEnter.append('div').attr('class', 'note-icon-annotation').call(svgIcon(statusIcon, 'icon-annotation'));
+             iconEnter.append('div').attr('class', 'note-icon-annotation').attr('title', _t('icons.close')).call(svgIcon(statusIcon, 'icon-annotation'));
            });
            headerEnter.append('div').attr('class', 'note-header-label').html(function (d) {
              if (_note.isNew()) {
-               return _t('note.new');
+               return _t.html('note.new');
              }
 
-             return _t('note.note') + ' ' + d.id + ' ' + (d.status === 'closed' ? _t('note.closed') : '');
+             return _t.html('note.note') + ' ' + d.id + ' ' + (d.status === 'closed' ? _t.html('note.closed') : '');
            });
          }
 
            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'));
+           linkEnter.append('span').call(_t.append('note.report'));
          }
 
          noteReport.note = function (val) {
          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 () {
+           headerEnter.append('button').attr('class', 'close').attr('title', _t('icons.close')).on('click', function () {
              context.enter(modeBrowse(context));
            }).call(svgIcon('#iD-icon-close'));
-           headerEnter.append('h3').html(_t.html('note.title'));
+           headerEnter.append('h2').call(_t.append('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]);
            // }
 
            noteSaveEnter.append('h4').attr('class', '.note-save-header').html(function () {
-             return _note.isNew() ? _t('note.newDescription') : _t('note.newComment');
+             return _note.isNew() ? _t.html('note.newDescription') : _t.html('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;
            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) {
+           authEnter.append('span').call(_t.append('note.login'));
+           authEnter.append('a').attr('target', '_blank').call(svgIcon('#iD-icon-out-link', 'inline')).append('span').call(_t.append('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);
+           prose = prose.enter().append('p').attr('class', 'note-save-prose').call(_t.append('note.upload_explanation')).merge(prose);
            osm.userDetails(function (err, user) {
              if (err) return;
              var userLink = select(document.createElement('div'));
                userLink.append('img').attr('src', user.image_url).attr('class', 'icon pre-text user-icon');
              }
 
-             userLink.append('a').attr('class', 'user-info').html(user.display_name).attr('href', osm.userURL(user.display_name)).attr('target', '_blank');
+             userLink.append('a').attr('class', 'user-info').text(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()
+               user: {
+                 html: userLink.html()
+               }
              }));
            });
          }
            var buttonEnter = buttonSection.enter().append('div').attr('class', 'buttons');
 
            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'));
+             buttonEnter.append('button').attr('class', 'button cancel-button secondary-action').call(_t.append('confirm.cancel'));
+             buttonEnter.append('button').attr('class', 'button save-button action').call(_t.append('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'));
+             buttonEnter.append('button').attr('class', 'button comment-button action').call(_t.append('note.comment'));
            } // update
 
 
            .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);
+             return _t.html('note.' + action + andComment);
            }).on('click.status', clickStatus);
            buttonSection.select('.comment-button') // select and propagate data
            .attr('disabled', isSaveDisabled).on('click.comment', clickComment);
              var setStatus = d.status === 'open' ? 'closed' : 'open';
              osm.postNoteUpdate(d, setStatus, function (err, note) {
                dispatch.call('change', note);
-             });
-           }
-         }
-
-         function clickComment(d3_event, d) {
-           this.blur(); // avoid keeping focus on the button - #4641
-
-           var osm = services.osm;
-
-           if (osm) {
-             osm.postNoteUpdate(d, d.status, function (err, note) {
-               dispatch.call('change', note);
-             });
-           }
-         }
-
-         noteEditor.note = function (val) {
-           if (!arguments.length) return _note;
-           _note = val;
-           return noteEditor;
-         };
-
-         noteEditor.newNote = function (val) {
-           if (!arguments.length) return _newNote;
-           _newNote = val;
-           return noteEditor;
-         };
-
-         return utilRebind(noteEditor, dispatch, 'on');
-       }
-
-       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 _current;
-
-         var _wasData = false;
-         var _wasNote = false;
-         var _wasQaItem = false; // use pointer events on supported platforms; fallback to mouse events
-
-         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
-
-         function sidebar(selection) {
-           var container = context.container();
-           var minWidth = 240;
-           var sidebarWidth;
-           var containerWidth;
-           var dragOffset; // Set the initial width constraints
-
-           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
-
-             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
-
-             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 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);
-
-             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 + '%');
-
-               if (isCollapsed) {
-                 context.ui().onResize([-sidebarWidth * scaleX, 0]);
-               } else {
-                 context.ui().onResize([-dx * scaleX, 0]);
-               }
-             }
-           }
-
-           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 hoverModeSelect = function hoverModeSelect(targets) {
-             context.container().selectAll('.feature-list-item button').classed('hover', false);
-
-             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;
-               });
-
-               if (!elements.empty()) {
-                 elements.classed('hover', true);
-               }
-             }
-           };
-
-           sidebar.hoverModeSelect = throttle(hoverModeSelect, 200);
-
-           function hover(targets) {
-             var datum = targets && targets.length && targets[0];
-
-             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 (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];
-
-               if (errService) {
-                 // marker may contain stale data - get latest
-                 datum = errService.getError(datum.id);
-               } // Currently only three possible services
-
-
-               var errEditor;
-
-               if (datum.service === 'keepRight') {
-                 errEditor = keepRightEditor;
-               } else if (datum.service === 'osmose') {
-                 errEditor = osmoseEditor;
-               } else {
-                 errEditor = improveOsmEditor;
-               }
-
-               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 (!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();
-             }
-           }
-
-           sidebar.hover = throttle(hover, 200);
-
-           sidebar.intersects = function (extent) {
-             var rect = selection.node().getBoundingClientRect();
-             return extent.intersects([context.projection.invert([0, rect.height]), context.projection.invert([rect.width, 0])]);
-           };
-
-           sidebar.select = function (ids, newFeature) {
-             sidebar.hide();
-
-             if (ids && ids.length) {
-               var entity = ids.length === 1 && context.entity(ids[0]);
-
-               if (entity && newFeature && selection.classed('collapsed')) {
-                 // uncollapse the sidebar
-                 var extent = entity.extent(context.graph());
-                 sidebar.expand(sidebar.intersects(extent));
-               }
-
-               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');
-             }
-           };
-
-           sidebar.showPresetList = function () {
-             inspector.showList();
-           };
-
-           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);
-           };
-
-           sidebar.hide = function () {
-             featureListWrap.classed('inspector-hidden', false);
-             inspectorWrap.classed('inspector-hidden', true);
-             if (_current) _current.remove();
-             _current = null;
-           };
-
-           sidebar.expand = function (moveMap) {
-             if (selection.classed('collapsed')) {
-               sidebar.toggle(moveMap);
-             }
-           };
-
-           sidebar.collapse = function (moveMap) {
-             if (!selection.classed('collapsed')) {
-               sidebar.toggle(moveMap);
-             }
-           };
-
-           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
-
-             selection.style('width', sidebarWidth + 'px');
-             var startMargin, endMargin, lastMargin;
-
-             if (isCollapsing) {
-               startMargin = lastMargin = 0;
-               endMargin = -sidebarWidth;
-             } else {
-               startMargin = lastMargin = -sidebarWidth;
-               endMargin = 0;
-             }
-
-             if (!isCollapsing) {
-               // unhide the sidebar's content before it transitions onscreen
-               selection.classed('collapsed', isCollapsing);
-             }
-
-             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 %
-
-
-               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
-
-
-           resizer.on('dblclick', function (d3_event) {
-             d3_event.preventDefault();
-
-             if (d3_event.sourceEvent) {
-               d3_event.sourceEvent.preventDefault();
-             }
-
-             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([]);
-             }
-           });
-         }
-
-         sidebar.showPresetList = function () {};
-
-         sidebar.hover = function () {};
-
-         sidebar.hover.cancel = function () {};
-
-         sidebar.intersects = function () {};
-
-         sidebar.select = function () {};
+             });
+           }
+         }
 
-         sidebar.show = function () {};
+         function clickComment(d3_event, d) {
+           this.blur(); // avoid keeping focus on the button - #4641
 
-         sidebar.hide = function () {};
+           var osm = services.osm;
 
-         sidebar.expand = function () {};
+           if (osm) {
+             osm.postNoteUpdate(d, d.status, function (err, note) {
+               dispatch.call('change', note);
+             });
+           }
+         }
 
-         sidebar.collapse = function () {};
+         noteEditor.note = function (val) {
+           if (!arguments.length) return _note;
+           _note = val;
+           return noteEditor;
+         };
 
-         sidebar.toggle = function () {};
+         noteEditor.newNote = function (val) {
+           if (!arguments.length) return _newNote;
+           _newNote = val;
+           return noteEditor;
+         };
 
-         return sidebar;
+         return utilRebind(noteEditor, dispatch, 'on');
        }
 
        function uiSourceSwitch(context) {
          }
 
          var sourceSwitch = function sourceSwitch(selection) {
-           selection.append('a').attr('href', '#').html(_t.html('source_switch.live')).attr('class', 'live chip').on('click', click);
+           selection.append('a').attr('href', '#').call(_t.append('source_switch.live')).attr('class', 'live chip').on('click', click);
          };
 
          sourceSwitch.keys = function (_) {
          };
        }
 
+       function uiSectionPrivacy(context) {
+         var section = uiSection('preferences-third-party', context).label(_t.html('preferences.privacy.title')).disclosureContent(renderDisclosureContent);
+
+         function renderDisclosureContent(selection) {
+           // enter
+           selection.selectAll('.privacy-options-list').data([0]).enter().append('ul').attr('class', 'layer-list privacy-options-list');
+           var thirdPartyIconsEnter = selection.select('.privacy-options-list').selectAll('.privacy-third-party-icons-item').data([corePreferences('preferences.privacy.thirdpartyicons') || 'true']).enter().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, d) {
+             d3_event.preventDefault();
+             corePreferences('preferences.privacy.thirdpartyicons', d === 'true' ? 'false' : 'true');
+           });
+           thirdPartyIconsEnter.append('span').call(_t.append('preferences.privacy.third_party_icons.description')); // update
+
+           selection.selectAll('.privacy-third-party-icons-item').classed('active', function (d) {
+             return d === 'true';
+           }).select('input').property('checked', function (d) {
+             return d === 'true';
+           }); // 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').call(_t.append('preferences.privacy.privacy_link'));
+         }
+
+         corePreferences.onChange('preferences.privacy.thirdpartyicons', section.reRender);
+         return section;
+       }
+
        function uiSplash(context) {
          return function (selection) {
            // Exception - if there are restorable changes, skip this splash screen.
            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'));
+           introModal.append('div').attr('class', 'modal-section').append('h3').call(_t.append('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>'
+             website: {
+               html: '<a target="_blank" href="https://github.com/openstreetmap/iD/blob/develop/CHANGELOG.md#whats-new">changelog</a>'
+             },
+             github: {
+               html: '<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>'
+             privacyLink: {
+               html: '<a target="_blank" href="https://github.com/openstreetmap/iD/blob/release/PRIVACY.md">' + _t('splash.privacy_policy') + '</a>'
+             }
            }));
+           uiSectionPrivacy(context).label(_t.html('splash.privacy_settings')).render(modalSection);
            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'));
+           walkthrough.append('div').call(_t.append('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'));
+           startEditing.append('div').call(_t.append('splash.start'));
            modalSelection.select('button.close').attr('class', 'hide');
          };
        }
                  // 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) {
+                 selection.call(_t.append('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').call(_t.append('login')).on('click.login', function (d3_event) {
                    d3_event.preventDefault();
                    osm.authenticate();
                  });
                  // 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) {
+                 selection.call(_t.append('osm_api_status.message.error', {
+                   suffix: ' '
+                 })).append('a').attr('href', '#') // let the user manually retry their connection directly
+                 .call(_t.append('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'));
+               selection.call(_t.append('osm_api_status.message.readonly'));
              } else if (apiStatus === 'offline') {
-               selection.html(_t.html('osm_api_status.message.offline'));
+               selection.call(_t.append('osm_api_status.message.offline'));
              }
 
              selection.attr('class', 'api-status ' + (err ? 'error' : apiStatus));
            }
 
-           osm.on('apiStatusChange.uiStatus', update); // reload the status periodically regardless of other factors
+           osm.on('apiStatusChange.uiStatus', update);
+           context.history().on('storage_error', function () {
+             selection.selectAll('span.local-storage-full').remove();
+             selection.append('span').attr('class', 'local-storage-full').call(_t.append('osm_api_status.message.local_storage_full'));
+             selection.classed('error', true);
+           }); // reload the status periodically regardless of other factors
 
            window.setInterval(function () {
              osm.reloadApiStatus();
          };
        }
 
-       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;
-
-         mode.enter = function () {
-           context.install(behavior);
-         };
+       // for punction see https://stackoverflow.com/a/21224179
 
-         mode.exit = function () {
-           context.uninstall(behavior);
-         };
+       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());
+       }
 
-         mode.selectedIDs = function () {
-           return [wayID];
-         };
+       // `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
+       //   }
+       //
 
-         mode.activeID = function () {
-           return behavior && behavior.activeID() || [];
-         };
+       function resolveStrings(item, defaults, localizerFn) {
+         var itemStrings = Object.assign({}, item.strings); // shallow clone
 
-         return mode;
-       }
+         var defaultStrings = Object.assign({}, defaults[item.type]); // shallow clone
 
-       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');
+         var anyToken = new RegExp(/(\{\w+\})/, 'gi'); // Pre-localize the item and default strings
 
-         function actionClose(wayId) {
-           return function (graph) {
-             return graph.replace(graph.entity(wayId).close());
-           };
-         }
+         if (localizerFn) {
+           if (itemStrings.community) {
+             var communityID = simplify(itemStrings.community);
+             itemStrings.community = localizerFn("_communities.".concat(communityID));
+           }
 
-         function start(loc) {
-           var startGraph = context.graph();
-           var node = osmNode({
-             loc: loc
-           });
-           var way = osmWay({
-             tags: defaultTags
+           ['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));
            });
-           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));
+         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 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));
+         if (!replacements.url) {
+           replacements.url = resolve(itemStrings.url || defaultStrings.url);
          }
 
-         mode.enter = function () {
-           context.install(behavior);
-         };
+         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
 
-         mode.exit = function () {
-           context.uninstall(behavior);
-         };
+         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;
 
-         return mode;
+         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
+
+
+           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 linkify(url, text) {
+           if (!url) return undefined;
+           text = text || url;
+           return "<a target=\"_blank\" href=\"".concat(url, "\">").concat(text, "</a>");
+         }
        }
 
-       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');
+       var _oci = null;
+       function uiSuccess(context) {
+         var MAXEVENTS = 2;
+         var dispatch = dispatch$8('cancel');
 
-         function start(loc) {
-           var startGraph = context.graph();
-           var node = osmNode({
-             loc: loc
-           });
-           var way = osmWay({
-             tags: defaultTags
+         var _changeset;
+
+         var _location;
+
+         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 ociResources = Object.values(vals[1].resources);
+
+             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
+               };
+               return _oci;
+             }
            });
-           context.perform(actionAddEntity(node), actionAddEntity(way), actionAddVertex(way.id, node.id));
-           context.enter(modeDrawLine(context, way.id, startGraph, mode.button));
+         } // string-to-date parsing in JavaScript is weird
+
+
+         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
+           }
+
+           var parsed = new Date(raw);
+           return new Date(parsed.toUTCString().substr(0, 25)); // convert to local timezone
          }
 
-         function startFromWay(loc, edge) {
-           var startGraph = context.graph();
-           var node = osmNode({
-             loc: loc
-           });
-           var way = osmWay({
-             tags: defaultTags
+         function success(selection) {
+           var header = selection.append('div').attr('class', 'header fillL');
+           header.append('h2').call(_t.append('success.just_edited'));
+           header.append('button').attr('class', 'close').attr('title', _t('icons.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').call(_t.append('success.thank_you' + (_location ? '_location' : ''), {
+             where: _location
+           }));
+           summary.append('p').call(_t.append('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').call(_t.append('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).call(_t.append('success.view_on_osm'));
+           summaryDetail.append('div').html(_t.html('success.changeset_id', {
+             changeset_id: {
+               html: "<a href=\"".concat(changesetURL, "\" target=\"_blank\">").concat(_changeset.id, "</a>")
+             }
+           })); // Get OSM community index features intersecting the map..
+
+           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;
+             }));
            });
-           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
+         function showCommunityLinks(selection, resources) {
+           var communityLinks = selection.append('div').attr('class', 'save-communityLinks');
+           communityLinks.append('h3').call(_t.append('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);
            });
-           context.perform(actionAddEntity(way), actionAddVertex(way.id, node.id));
-           context.enter(modeDrawLine(context, way.id, startGraph, mode.button));
+           var communityDetail = rowEnter.append('td').attr('class', 'cell-detail community-detail');
+           communityDetail.each(showCommunityDetails);
+           communityLinks.append('div').attr('class', 'community-missing').call(_t.append('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').call(_t.append('success.tell_us'));
          }
 
-         mode.enter = function () {
-           context.install(behavior);
+         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 (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').text(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 (d.languageCodes && d.languageCodes.length) {
+               var languageList = d.languageCodes.map(function (code) {
+                 return _mainLocalizer.languageName(code);
+               }).join(', ');
+               moreEnter.append('div').attr('class', 'community-languages').call(_t.append('success.languages', {
+                 languages: languageList
+               }));
+             }
+           }
+
+           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;
+             }).text(function (d) {
+               var name = d.name;
+
+               if (d.i18n && d.id) {
+                 name = _t("community.".concat(communityID, ".events.").concat(d.id, ".name"), {
+                   "default": name
+                 });
+               }
+
+               return name;
+             });
+             itemEnter.append('div').attr('class', 'community-event-when').text(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').text(function (d) {
+               var where = d.where;
+
+               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').text(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;
+             });
+           }
+         }
+
+         success.changeset = function (val) {
+           if (!arguments.length) return _changeset;
+           _changeset = val;
+           return success;
          };
 
-         mode.exit = function () {
-           context.uninstall(behavior);
+         success.location = function (val) {
+           if (!arguments.length) return _location;
+           _location = val;
+           return success;
+         };
+
+         return utilRebind(success, dispatch, 'on');
+       }
+
+       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;
+           }
+
+           corePreferences('sawVersion', currVersion);
+           sawVersion = currVersion;
+         }
+
+         return function (selection) {
+           selection.append('a').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD').text(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')));
+           }
          };
-
-         return mode;
        }
 
-       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');
+       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: '-'
+         }];
 
-         function add(loc) {
-           var node = osmNode({
-             loc: loc,
-             tags: defaultTags
-           });
-           context.perform(actionAddEntity(node), _t('operations.add.annotation.point'));
-           enterSelectMode(node);
+         function zoomIn(d3_event) {
+           if (d3_event.shiftKey) return;
+           d3_event.preventDefault();
+           context.map().zoomIn();
          }
 
-         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 zoomOut(d3_event) {
+           if (d3_event.shiftKey) return;
+           d3_event.preventDefault();
+           context.map().zoomOut();
          }
 
-         function enterSelectMode(node) {
-           context.enter(modeSelect(context, [node.id]).newFeature(true));
+         function zoomInFurther(d3_event) {
+           if (d3_event.shiftKey) return;
+           d3_event.preventDefault();
+           context.map().zoomInFurther();
          }
 
-         function addNode(node) {
-           if (Object.keys(defaultTags).length === 0) {
-             enterSelectMode(node);
-             return;
-           }
+         function zoomOutFurther(d3_event) {
+           if (d3_event.shiftKey) return;
+           d3_event.preventDefault();
+           context.map().zoomOutFurther();
+         }
 
-           var tags = Object.assign({}, node.tags); // shallow copy
+         return function (selection) {
+           var tooltipBehavior = uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(function (d) {
+             if (d.disabled()) {
+               return d.disabledTitle;
+             }
 
-           for (var key in defaultTags) {
-             tags[key] = defaultTags[key];
-           }
+             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)();
+             }
 
-           context.perform(actionChangeTags(node.id, tags), _t('operations.add.annotation.point'));
-           enterSelectMode(node);
-         }
+             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 cancel() {
-           context.enter(modeBrowse(context));
-         }
+           function updateButtonStates() {
+             buttons.classed('disabled', function (d) {
+               return d.disabled();
+             }).each(function () {
+               var selection = select(this);
 
-         mode.enter = function () {
-           context.install(behavior);
-         };
+               if (!selection.select('.tooltip.in').empty()) {
+                 selection.call(tooltipBehavior.updateContent);
+               }
+             });
+           }
 
-         mode.exit = function () {
-           context.uninstall(behavior);
+           updateButtonStates();
+           context.map().on('move.uiZoom', updateButtonStates);
          };
-
-         return mode;
        }
 
-       function modeSelectNote(context, selectedNoteID) {
-         var mode = {
-           id: 'select-note',
-           button: 'browse'
-         };
-
-         var _keybinding = utilKeybinding('select-note');
+       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.html('inspector.title_count', {
+             title: {
+               html: _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 _noteEditor = uiNoteEditor(context).on('change', function () {
-           context.map().pan([0, 0]); // trigger a redraw
+         var _tagView = corePreferences('raw-tag-editor-view') || 'list'; // 'list, 'text'
 
-           var note = checkSelectedID();
-           if (!note) return;
-           context.ui().sidebar.show(_noteEditor.note(note));
-         });
 
-         var _behaviors = [behaviorBreathe(), behaviorHover(context), behaviorSelect(context), behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior];
-         var _newFeature = false;
+         var _readOnlyTags = []; // the keys in the order we want them to display
 
-         function checkSelectedID() {
-           if (!services.osm) return;
-           var note = services.osm.getNote(selectedNoteID);
+         var _orderedKeys = [];
+         var _showBlank = false;
+         var _pendingChange = null;
 
-           if (!note) {
-             context.enter(modeBrowse(context));
-           }
+         var _state;
 
-           return note;
-         } // class the note as selected, or return to browse mode if the note is gone
+         var _presets;
 
+         var _tags;
 
-         function selectNote(d3_event, drawn) {
-           if (!checkSelectedID()) return;
-           var selection = context.surface().selectAll('.layer-notes .note-' + selectedNoteID);
+         var _entityIDs;
 
-           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;
+         var _didInteract = false;
 
-             if (drawn && source && (source.type === 'pointermove' || source.type === 'mousemove' || source.type === 'touchmove')) {
-               context.enter(modeBrowse(context));
-             }
-           } else {
-             selection.classed('selected', true);
-             context.selectedNoteID(selectedNoteID);
-           }
+         function interacted() {
+           _didInteract = true;
          }
 
-         function esc() {
-           if (context.container().select('.combobox').size()) return;
-           context.enter(modeBrowse(context));
-         }
+         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
 
-         mode.zoomToSelected = function () {
-           if (!services.osm) return;
-           var note = services.osm.getNote(selectedNoteID);
+           var all = Object.keys(_tags).sort();
+           var missingKeys = utilArrayDifference(all, _orderedKeys);
 
-           if (note) {
-             context.map().centerZoomEase(note.loc, 20);
-           }
-         };
+           for (var i in missingKeys) {
+             _orderedKeys.push(missingKeys[i]);
+           } // assemble row data
 
-         mode.newFeature = function (val) {
-           if (!arguments.length) return _newFeature;
-           _newFeature = val;
-           return mode;
-         };
 
-         mode.enter = function () {
-           var note = checkSelectedID();
-           if (!note) return;
+           var rowData = _orderedKeys.map(function (key, i) {
+             return {
+               index: i,
+               key: key,
+               value: _tags[key]
+             };
+           }); // append blank row last, if necessary
 
-           _behaviors.forEach(context.install);
 
-           _keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on('⎋', esc, true);
+           if (!rowData.length || _showBlank) {
+             _showBlank = false;
+             rowData.push({
+               index: rowData.length,
+               key: '',
+               value: ''
+             });
+           } // View Options
 
-           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);
-         };
+           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').attr('role', 'tablist');
+           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('aria-selected', function (d) {
+             return _tagView === d.id;
+           }).attr('role', 'tab').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;
+             }).attr('aria-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
 
-         mode.exit = function () {
-           _behaviors.forEach(context.uninstall);
+           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
 
-           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);
-         };
+           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
 
-         return mode;
-       }
+           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').attr('aria-label', _t('inspector.add_to_tag')).call(svgIcon('#iD-icon-plus', 'light')).call(uiTooltip().title(_t.html('inspector.add_to_tag')).placement(_mainLocalizer.textDirection() === 'ltr' ? 'right' : 'left')).on('click', addTag);
+           addRowEnter.append('div').attr('class', 'space-value'); // preserve space
 
-       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);
+           addRowEnter.append('div').attr('class', 'space-buttons'); // preserve space
+           // Tag list items
 
-         function add(loc) {
-           var osm = services.osm;
-           if (!osm) return;
-           var note = osmNote({
-             loc: loc,
-             status: 'open',
-             comments: []
+           var items = list.selectAll('.tag-row').data(rowData, function (d) {
+             return d.key;
            });
-           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));
-         }
+           items.exit().each(unbind).remove(); // Enter
 
-         function cancel() {
-           context.enter(modeBrowse(context));
-         }
+           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
 
-         mode.enter = function () {
-           context.install(behavior);
-         };
+           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
 
-         mode.exit = function () {
-           context.uninstall(behavior);
-         };
+             var value = row.select('input.value'); // propagate bound data
 
-         return mode;
-       }
+             if (_entityIDs && taginfo && _state !== 'hover') {
+               bindTypeahead(key, value);
+             }
 
-       var JXON = new function () {
-         var sValueProp = 'keyValue',
-             sAttributesProp = 'keyAttributes',
-             sAttrPref = '@',
+             var referenceOptions = {
+               key: d.key
+             };
 
-         /* you can customize these values */
-         aCache = [],
-             rIsNull = /^\s*$/,
-             rIsBool = /^(?:true|false)$/i;
+             if (typeof d.value === 'string') {
+               referenceOptions.value = d.value;
+             }
 
-         function parseText(sValue) {
-           if (rIsNull.test(sValue)) {
-             return null;
-           }
+             var reference = uiTagReference(referenceOptions);
 
-           if (rIsBool.test(sValue)) {
-             return sValue.toLowerCase() === 'true';
-           }
+             if (_state === 'hover') {
+               reference.showing(false);
+             }
 
-           if (isFinite(sValue)) {
-             return parseFloat(sValue);
-           }
+             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) || 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
+         }
 
-           if (isFinite(Date.parse(sValue))) {
-             return new Date(sValue);
+         function isReadOnly(d) {
+           for (var i = 0; i < _readOnlyTags.length; i++) {
+             if (d.key.match(_readOnlyTags[i]) !== null) {
+               return true;
+             }
            }
 
-           return sValue;
+           return false;
          }
 
-         function EmptyTree() {}
-
-         EmptyTree.prototype.toString = function () {
-           return 'null';
-         };
-
-         EmptyTree.prototype.valueOf = function () {
-           return null;
-         };
-
-         function objectify(vValue) {
-           return vValue === null ? new EmptyTree() : vValue instanceof Object ? vValue : new vValue.constructor(vValue);
+         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');
          }
 
-         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 stringify(s) {
+           return JSON.stringify(s).slice(1, -1); // without leading/trailing "
+         }
 
-           if (bChildren) {
-             for (var oNode, nItem = 0; nItem < oParentNode.childNodes.length; nItem++) {
-               oNode = oParentNode.childNodes.item(nItem);
+         function unstringify(s) {
+           var leading = '';
+           var trailing = '';
 
-               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);
-               }
-             }
+           if (s.length < 1 || s.charAt(0) !== '"') {
+             leading = '"';
            }
 
-           var nLevelEnd = aCache.length,
-               vBuiltVal = parseText(sCollectedTxt);
-
-           if (!bHighVerb && (bChildren || bAttributes)) {
-             vResult = nVerb === 0 ? objectify(vBuiltVal) : {};
+           if (s.length < 2 || s.charAt(s.length - 1) !== '"' || s.charAt(s.length - 1) === '"' && s.charAt(s.length - 2) === '\\') {
+             trailing = '"';
            }
 
-           for (var nElId = nLevelStart; nElId < nLevelEnd; nElId++) {
-             sProp = aCache[nElId].nodeName.toLowerCase();
-             vContent = createObjTree(aCache[nElId], nVerb, bFreeze, bNesteAttr);
+           return JSON.parse(leading + s + trailing);
+         }
 
-             if (vResult.hasOwnProperty(sProp)) {
-               if (vResult[sProp].constructor !== Array) {
-                 vResult[sProp] = [vResult[sProp]];
-               }
+         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');
 
-               vResult[sProp].push(vContent);
-             } else {
-               vResult[sProp] = vContent;
-               nLength++;
-             }
+           if (_state !== 'hover' && str.length) {
+             return str + '\n';
            }
 
-           if (bAttributes) {
-             var nAttrLen = oParentNode.attributes.length,
-                 sAPrefix = bNesteAttr ? '' : sAttrPref,
-                 oAttrParent = bNesteAttr ? {} : vResult;
+           return str;
+         }
 
-             for (var oAttrib, nAttrib = 0; nAttrib < nAttrLen; nLength++, nAttrib++) {
-               oAttrib = oParentNode.attributes.item(nAttrib);
-               oAttrParent[sAPrefix + oAttrib.name.toLowerCase()] = parseText(oAttrib.value.trim());
+         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
 
-             if (bNesteAttr) {
-               if (bFreeze) {
-                 Object.freeze(oAttrParent);
-               }
+             if (change.newVal === '*' && typeof change.oldVal !== 'string') return;
 
-               vResult[sAttributesProp] = oAttrParent;
-               nLength -= nAttrLen - 1;
+             if (change.type === '-') {
+               _pendingChange[change.key] = undefined;
+             } else if (change.type === '+') {
+               _pendingChange[change.key] = change.newVal || '';
              }
-           }
-
-           if (nVerb === 3 || (nVerb === 2 || nVerb === 1 && nLength > 0) && sCollectedTxt) {
-             vResult[sValueProp] = vBuiltVal;
-           } else if (!bHighVerb && nLength === 0 && sCollectedTxt) {
-             vResult = vBuiltVal;
-           }
+           });
 
-           if (bFreeze && (bHighVerb || nLength > 0)) {
-             Object.freeze(vResult);
+           if (Object.keys(_pendingChange).length === 0) {
+             _pendingChange = null;
+             return;
            }
 
-           aCache.length = nLevelStart;
-           return vResult;
+           scheduleChange();
          }
 
-         function loadObjTree(oXMLDoc, oParentEl, oParentObj) {
-           var vValue, oChild;
-
-           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()));
+         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();
            }
+         }
 
-           for (var sName in oParentObj) {
-             vValue = oParentObj[sName];
+         function bindTypeahead(key, value) {
+           if (isReadOnly(key.datum())) return;
 
-             if (isFinite(sName) || vValue instanceof Function) {
-               continue;
-             }
-             /* verbosity level is 0 */
+           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 data = _tags[keyString].filter(Boolean).map(function (tagValue) {
+                 return {
+                   value: tagValue,
+                   title: tagValue
+                 };
+               });
 
+               callback(data);
+             }));
+             return;
+           }
 
-             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);
+           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));
                }
-             } else {
-               oChild = oXMLDoc.createElement(sName);
+             });
+           }));
+           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 (vValue instanceof Object) {
-                 loadObjTree(oXMLDoc, oChild, vValue);
-               } else if (vValue !== null && vValue !== true) {
-                 oChild.appendChild(oXMLDoc.createTextNode(vValue.toString()));
-               }
+           function sort(value, data) {
+             var sameletter = [];
+             var other = [];
 
-               oParentEl.appendChild(oChild);
+             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);
            }
          }
 
-         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 unbind() {
+           var row = select(this);
+           row.selectAll('input.key').call(uiCombobox.off, context);
+           row.selectAll('input.value').call(uiCombobox.off, context);
+         }
 
-           return createObjTree(oXMLParent, _nVerb, bFreeze || false, arguments.length > 3 ? bNesteAttributes : _nVerb === 3);
-         };
+         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
 
-         this.unbuild = function (oObjTree) {
-           var oNewDoc = document.implementation.createDocument('', '', null);
-           loadObjTree(oNewDoc, oNewDoc, oObjTree);
-           return oNewDoc;
-         };
+           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
 
-         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));
+           if (isReadOnly({
+             key: kNew
+           })) {
+             this.value = kOld;
+             return;
+           }
 
-       function uiConflicts(context) {
-         var dispatch = dispatch$8('cancel', 'save');
-         var keybinding = utilKeybinding('conflicts');
+           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 _origChanges;
+             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;
+           }
 
-         var _conflictList;
+           _pendingChange = _pendingChange || {};
 
-         var _shownConflictIndex;
+           if (kOld) {
+             if (kOld === kNew) return; // a tag key was renamed
 
-         function keybindingOn() {
-           select(document).call(keybinding.on('⎋', cancel, true));
-         }
+             _pendingChange[kNew] = _pendingChange[kOld] || {
+               oldKey: kOld
+             };
+             _pendingChange[kOld] = undefined;
+           } else {
+             // a new tag was added
+             var row = this.parentNode.parentNode;
+             var inputVal = select(row).selectAll('input.value');
+             var vNew = context.cleanTagValue(utilGetSetValue(inputVal));
+             _pendingChange[kNew] = vNew;
+             utilGetSetValue(inputVal, vNew);
+           } // update the ordered key index so this row doesn't change position
 
-         function keybindingOff() {
-           select(document).call(keybinding.unbind);
-         }
 
-         function tryAgain() {
-           keybindingOff();
-           dispatch.call('save');
-         }
+           var existingKeyIndex = _orderedKeys.indexOf(kOld);
 
-         function cancel() {
-           keybindingOff();
-           dispatch.call('cancel');
+           if (existingKeyIndex !== -1) _orderedKeys[existingKeyIndex] = kNew;
+           d.key = kNew; // update datum to avoid exit/enter on tag update
+
+           this.value = kNew;
+           scheduleChange();
          }
 
-         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
+         function valueChange(d3_event, d) {
+           if (isReadOnly(d)) return; // exit if this is a multiselection and no value was entered
 
-           var detected = utilDetect();
-           var changeset = new osmChangeset();
-           delete changeset.id; // Export without changeset_id
+           if (typeof d.value !== 'string' && !this.value) return; // exit if we are currently about to delete this row anyway - #6366
 
-           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 (_pendingChange && _pendingChange.hasOwnProperty(d.key) && _pendingChange[d.key] === undefined) return;
+           _pendingChange = _pendingChange || {};
+           _pendingChange[d.key] = context.cleanTagValue(this.value);
+           scheduleChange();
+         }
 
-           if (detected.download) {
-             // All except IE11 and Edge
-             linkEnter // download the data as a file
-             .attr('href', window.URL.createObjectURL(blob)).attr('download', fileName);
+         function removeTag(d3_event, d) {
+           if (isReadOnly(d)) return;
+
+           if (d.key === '') {
+             // removing the blank row
+             _showBlank = false;
+             section.reRender();
            } else {
-             // IE11 and Edge
-             linkEnter // open data uri in a new tab
-             .attr('target', '_blank').on('click.download', function () {
-               navigator.msSaveBlob(blob, fileName);
+             // remove the key from the ordered key index
+             _orderedKeys = _orderedKeys.filter(function (key) {
+               return key !== d.key;
              });
+             _pendingChange = _pendingChange || {};
+             _pendingChange[d.key] = undefined;
+             scheduleChange();
            }
-
-           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);
          }
 
-         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 (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);
-           }
-
-           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);
-           });
+         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 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
-
-           choicesEnter.merge(choices).each(function (d) {
-             var ul = this.parentNode;
+         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
 
-             if (ul.__data__.chosen === d.id) {
-               choose(null, ul, d);
-             }
-           });
+           window.setTimeout(function () {
+             if (!_pendingChange) return;
+             dispatch.call('change', this, entityIDs, _pendingChange);
+             _pendingChange = null;
+           }, 10);
          }
 
-         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);
-         }
+         section.state = function (val) {
+           if (!arguments.length) return _state;
 
-         function zoomToEntity(id, extent) {
-           context.surface().selectAll('.hover').classed('hover', false);
-           var entity = context.graph().hasEntity(id);
+           if (_state !== val) {
+             _orderedKeys = [];
+             _state = val;
+           }
 
-           if (entity) {
-             if (extent) {
-               context.map().trimmedExtent(extent);
-             } else {
-               context.map().zoomToEase(entity);
-             }
+           return section;
+         };
 
-             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)
-         //     ]
-         // }
+         section.presets = function (val) {
+           if (!arguments.length) return _presets;
+           _presets = val;
 
+           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);
+           }
 
-         conflicts.conflictList = function (_) {
-           if (!arguments.length) return _conflictList;
-           _conflictList = _;
-           return conflicts;
+           return section;
          };
 
-         conflicts.origChanges = function (_) {
-           if (!arguments.length) return _origChanges;
-           _origChanges = _;
-           return conflicts;
+         section.tags = function (val) {
+           if (!arguments.length) return _tags;
+           _tags = val;
+           return section;
          };
 
-         conflicts.shownEntityIds = function () {
-           if (_conflictList && typeof _shownConflictIndex === 'number') {
-             return [_conflictList[_shownConflictIndex].id];
-           }
+         section.entityIDs = function (val) {
+           if (!arguments.length) return _entityIDs;
 
-           return [];
-         };
+           if (!_entityIDs || !val || !utilArrayIdentical(_entityIDs, val)) {
+             _entityIDs = val;
+             _orderedKeys = [];
+           }
 
-         return utilRebind(conflicts, dispatch, 'on');
-       }
+           return section;
+         }; // pass an array of regular expressions to test against the tag key
 
-       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;
+         section.readOnlyTags = function (val) {
+           if (!arguments.length) return _readOnlyTags;
+           _readOnlyTags = val;
+           return section;
          };
 
-         return modalSelection;
+         return utilRebind(section, dispatch, 'on');
        }
 
-       function uiChangesetEditor(context) {
-         var dispatch = dispatch$8('change');
-         var formFields = uiFormFields(context);
-         var commentCombo = uiCombobox(context, 'comment').caseSensitive(true);
+       function uiDataEditor(context) {
+         var dataHeader = uiDataHeader();
+         var rawTagEditor = uiSectionRawTagEditor('custom-data-tag-editor', context).expandedByDefault(true).readOnlyTags([/./]);
 
-         var _fieldsArr;
+         var _datum;
 
-         var _tags;
+         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').attr('title', _t('icons.close')).on('click', function () {
+             context.enter(modeBrowse(context));
+           }).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h2').call(_t.append('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 _changesetID;
+           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
 
-         function changesetEditor(selection) {
-           render(selection);
+           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);
          }
 
-         function render(selection) {
-           var initial = false;
+         dataEditor.datum = function (val) {
+           if (!arguments.length) return _datum;
+           _datum = val;
+           return this;
+         };
 
-           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
-             })];
+         return dataEditor;
+       }
 
-             _fieldsArr.forEach(function (field) {
-               field.on('change', function (t, onInput) {
-                 dispatch.call('change', field, undefined, t, onInput);
-               });
-             });
-           }
+       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);
+           });
+           details.exit().remove();
+           var detailsEnter = details.enter().append('div').attr('class', 'error-details qa-details-container'); // Description
+
+           if (issueString(_qaItem, 'detail')) {
+             var div = detailsEnter.append('div').attr('class', 'qa-details-subsection');
+             div.append('h4').call(_t.append('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)
 
-           _fieldsArr.forEach(function (field) {
-             field.tags(_tags);
-           });
 
-           selection.call(formFields.fieldsArr(_fieldsArr));
+           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 (initial) {
-             var commentField = selection.select('.form-field-comment textarea');
-             var commentNode = commentField.node();
+           if (issueString(_qaItem, 'fix')) {
+             var _div = detailsEnter.append('div').attr('class', 'qa-details-subsection');
 
-             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
+             _div.append('h4').call(_t.append('QA.osmose.fix_title'));
 
+             _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)
 
-             utilTriggerEvent(commentField, 'blur');
-             var osm = context.connection();
 
-             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
+           if (issueString(_qaItem, 'trap')) {
+             var _div2 = detailsEnter.append('div').attr('class', 'qa-details-subsection');
 
+             _div2.append('h4').call(_t.append('QA.osmose.trap_title'));
 
-           var hasGoogle = _tags.comment.match(/google/i);
+             _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
 
-           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);
-         }
 
-         changesetEditor.tags = function (_) {
-           if (!arguments.length) return _tags;
-           _tags = _; // Don't reset _fieldsArr here.
+           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
 
-           return changesetEditor;
-         };
+             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
 
-         changesetEditor.changesetID = function (_) {
-           if (!arguments.length) return _changesetID;
-           if (_changesetID === _) return changesetEditor;
-           _changesetID = _;
-           _fieldsArr = null;
-           return changesetEditor;
-         };
+             if (d.detail) {
+               detailsDiv.append('h4').call(_t.append('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
 
-         return utilRebind(changesetEditor, dispatch, 'on');
-       }
 
-       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);
+             elemsDiv.append('h4').call(_t.append('QA.osmose.elems_title'));
+             elemsDiv.append('ul').selectAll('li').data(d.elems).enter().append('li').append('a').attr('href', '#').attr('class', 'error_entity_link').text(function (d) {
+               return d;
+             }).each(function () {
+               var link = select(this);
+               var entityID = this.textContent;
+               var entity = context.hasEntity(entityID); // Add click handler
 
-         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 = '';
+               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 (name !== '') {
-               string += ':';
-             }
+                 if (!osmlayer.enabled()) {
+                   osmlayer.enabled(true);
+                 }
 
-             return string += ' ' + name;
-           });
-           items = itemsEnter.merge(items); // Download changeset link
+                 context.map().centerZoom(d.loc, 20);
 
-           var changeset = new osmChangeset().update({
-             id: undefined
-           });
-           var changes = history.changes(actionDiscardTags(history.difference(), _discardTags));
-           delete changeset.id; // Export without chnageset_id
+                 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 data = JXON.stringify(changeset.osmChangeJXON(changes));
-           var blob = new Blob([data], {
-             type: 'text/xml;charset=utf-8;'
+               if (entity) {
+                 var name = utilDisplayName(entity); // try to use common name
+
+                 if (!name) {
+                   var preset = _mainPresetIndex.match(entity, context.graph());
+                   name = preset && !preset.isFallback() && preset.name(); // fallback to preset name
+                 }
+
+                 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
            });
-           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 {
-             // IE11 and Edge
-             linkEnter // open data uri in a new tab
-             .attr('target', '_blank').on('click.download', function () {
-               navigator.msSaveBlob(blob, fileName);
-             });
-           }
+         osmoseDetails.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return osmoseDetails;
+         };
 
-           linkEnter.call(svgIcon('#iD-icon-load', 'inline')).append('span').html(_t.html('commit.download_changes'));
+         return osmoseDetails;
+       }
 
-           function mouseover(d) {
-             if (d.entity) {
-               context.surface().selectAll(utilEntityOrMemberSelector([d.entity.id], context.graph())).classed('hover', true);
-             }
-           }
+       function uiOsmoseHeader() {
+         var _qaItem;
 
-           function mouseout() {
-             context.surface().selectAll('.hover').classed('hover', false);
-           }
+         function issueTitle(d) {
+           var unknown = _t('inspector.unknown');
+           if (!d) return unknown; // Issue titles supplied by Osmose
 
-           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);
-             }
-           }
+           var s = services.osmose.getStrings(d.itemType);
+           return 'title' in s ? s.title : unknown;
          }
 
-         return section;
-       }
-
-       function uiCommitWarnings(context) {
-         function commitWarnings(selection) {
-           var issuesBySeverity = context.validator().getIssuesBySeverity({
-             what: 'edited',
-             where: 'all',
-             includeDisabledRules: true
+         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;
 
-           for (var severity in issuesBySeverity) {
-             var issues = issuesBySeverity[severity];
-
-             if (severity !== 'error') {
-               // exclude 'fixme' and similar - #8603
-               issues = issues.filter(function (issue) {
-                 return issue.type !== 'help_request';
-               });
+             if (!picon) {
+               return '';
+             } else {
+               var isMaki = /^maki-/.test(picon);
+               return "#".concat(picon).concat(isMaki ? '-11' : '');
              }
-
-             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);
-               }
-             }).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);
-             });
-           }
+           });
+           headerEnter.append('div').attr('class', 'qa-header-label').text(issueTitle);
          }
 
-         return commitWarnings;
-       }
+         osmoseHeader.issue = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return osmoseHeader;
+         };
 
-       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
+         return osmoseHeader;
+       }
 
-       var hashtagRegex = /(#[^\u2000-\u206F\u2E00-\u2E7F\s\\'!"#$%()*,.\/:;<=>?@\[\]^`{|}~]+)/g;
-       function uiCommit(context) {
-         var dispatch = dispatch$8('cancel');
+       function uiViewOnOsmose() {
+         var _qaItem;
 
-         var _userDetails;
+         function viewOnOsmose(selection) {
+           var url;
 
-         var _selection;
+           if (services.osmose && _qaItem instanceof QAItem) {
+             url = services.osmose.itemURL(_qaItem);
+           }
 
-         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);
+           var link = selection.selectAll('.view-on-osmose').data(url ? [url] : []); // exit
 
-         function commit(selection) {
-           _selection = selection; // Initialize changeset if one does not exist yet.
+           link.exit().remove(); // enter
 
-           if (!context.changeset) initChangeset();
-           loadDerivedChangesetTags();
-           selection.call(render);
+           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').call(_t.append('inspector.view_on_osmose'));
          }
 
-         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
+         viewOnOsmose.what = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return viewOnOsmose;
+         };
 
-           if (commentDate > currDate || currDate - commentDate > cutoff) {
-             corePreferences('comment', null);
-             corePreferences('hashtags', null);
-             corePreferences('source', null);
-           } // load in explicitly-set values, if any
+         return viewOnOsmose;
+       }
 
+       function uiOsmoseEditor(context) {
+         var dispatch = dispatch$8('change');
+         var qaDetails = uiOsmoseDetails(context);
+         var qaHeader = uiOsmoseHeader();
 
-           if (context.defaultChangesetComment()) {
-             corePreferences('comment', context.defaultChangesetComment());
-             corePreferences('commentDate', Date.now());
-           }
+         var _qaItem;
 
-           if (context.defaultChangesetSource()) {
-             corePreferences('source', context.defaultChangesetSource());
-             corePreferences('commentDate', Date.now());
-           }
+         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').attr('title', _t('icons.close')).on('click', function () {
+             return context.enter(modeBrowse(context));
+           }).call(svgIcon('#iD-icon-close'));
+           headerEnter.append('h2').call(_t.append('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 (context.defaultChangesetHashtags()) {
-             corePreferences('hashtags', context.defaultChangesetHashtags());
-             corePreferences('commentDate', Date.now());
-           }
+         function osmoseSaveSection(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
 
-           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
+           var isShown = _qaItem && isSelected;
+           var saveSection = selection.selectAll('.qa-save').data(isShown ? [_qaItem] : [], function (d) {
+             return "".concat(d.id, "-").concat(d.status || 0);
+           }); // exit
 
-           findHashtags(tags, true);
-           var hashtags = corePreferences('hashtags');
+           saveSection.exit().remove(); // enter
 
-           if (hashtags) {
-             tags.hashtags = hashtags;
-           }
+           var saveSectionEnter = saveSection.enter().append('div').attr('class', 'qa-save save-section cf'); // update
 
-           var source = corePreferences('source');
+           saveSection = saveSectionEnter.merge(saveSection).call(qaSaveButtons);
+         }
 
-           if (source) {
-             tags.source = source;
-           }
+         function qaSaveButtons(selection) {
+           var isSelected = _qaItem && _qaItem.id === context.selectedErrorID();
 
-           var photoOverlaysUsed = context.history().photoOverlaysUsed();
+           var buttonSection = selection.selectAll('.buttons').data(isSelected ? [_qaItem] : [], function (d) {
+             return d.status + d.id;
+           }); // exit
 
-           if (photoOverlaysUsed.length) {
-             var sources = (tags.source || '').split(';'); // include this tag for any photo layer
+           buttonSection.exit().remove(); // enter
 
-             if (sources.indexOf('streetlevel imagery') === -1) {
-               sources.push('streetlevel imagery');
-             } // add the photo overlays used during editing as sources
+           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
 
+           buttonSection = buttonSection.merge(buttonEnter);
+           buttonSection.select('.close-button').call(_t.append('QA.keepRight.close')).on('click.close', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641
 
-             photoOverlaysUsed.forEach(function (photoOverlay) {
-               if (sources.indexOf(photoOverlay) === -1) {
-                 sources.push(photoOverlay);
-               }
-             });
-             tags.source = context.cleanTagValue(sources.join(';'));
-           }
+             var qaService = services.osmose;
 
-           context.changeset = new osmChangeset({
-             tags: tags
+             if (qaService) {
+               d.newStatus = 'done';
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);
+               });
+             }
            });
-         } // Calculates read-only metadata tags based on the user's editing session and applies
-         // them to the changeset.
+           buttonSection.select('.ignore-button').call(_t.append('QA.keepRight.ignore')).on('click.ignore', function (d3_event, d) {
+             this.blur(); // avoid keeping focus on the button - #4641
 
+             var qaService = services.osmose;
 
-         function loadDerivedChangesetTags() {
-           var osm = context.connection();
-           if (!osm) return;
-           var tags = Object.assign({}, context.changeset.tags); // shallow copy
-           // assign tags for imagery used
+             if (qaService) {
+               d.newStatus = 'false';
+               qaService.postUpdate(d, function (err, item) {
+                 return dispatch.call('change', item);
+               });
+             }
+           });
+         } // NOTE: Don't change method name until UI v3 is merged
 
-           var imageryUsed = context.cleanTagValue(context.history().imageryUsed().join(';'));
-           tags.imagery_used = imageryUsed || 'None'; // assign tags for closed issues and notes
 
-           var osmClosed = osm.getClosedIDs();
-           var itemType;
+         osmoseEditor.error = function (val) {
+           if (!arguments.length) return _qaItem;
+           _qaItem = val;
+           return osmoseEditor;
+         };
 
-           if (osmClosed.length) {
-             tags['closed:note'] = context.cleanTagValue(osmClosed.join(';'));
-           }
+         return utilRebind(osmoseEditor, dispatch, 'on');
+       }
 
-           if (services.keepRight) {
-             var krClosed = services.keepRight.getClosedIDs();
+       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 (krClosed.length) {
-               tags['closed:keepright'] = context.cleanTagValue(krClosed.join(';'));
-             }
-           }
+         var _current;
 
-           if (services.improveOSM) {
-             var iOsmClosed = services.improveOSM.getClosedCounts();
+         var _wasData = false;
+         var _wasNote = false;
+         var _wasQaItem = false; // use pointer events on supported platforms; fallback to mouse events
 
-             for (itemType in iOsmClosed) {
-               tags['closed:improveosm:' + itemType] = context.cleanTagValue(iOsmClosed[itemType].toString());
-             }
-           }
+         var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
 
-           if (services.osmose) {
-             var osmoseClosed = services.osmose.getClosedCounts();
+         function sidebar(selection) {
+           var container = context.container();
+           var minWidth = 240;
+           var sidebarWidth;
+           var containerWidth;
+           var dragOffset; // Set the initial width constraints
 
-             for (itemType in osmoseClosed) {
-               tags['closed:osmose:' + itemType] = context.cleanTagValue(osmoseClosed[itemType].toString());
-             }
-           } // remove existing issue counts
+           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
 
+             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
 
-           for (var key in tags) {
-             if (key.match(/(^warnings:)|(^resolved:)/)) {
-               delete tags[key];
-             }
+             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 addIssueCounts(issues, prefix) {
-             var issuesByType = utilArrayGroupBy(issues, 'type');
-
-             for (var issueType in issuesByType) {
-               var issuesOfType = issuesByType[issueType];
+           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);
 
-               if (issuesOfType[0].subtype) {
-                 var issuesBySubtype = utilArrayGroupBy(issuesOfType, 'subtype');
+             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 + '%');
 
-                 for (var issueSubtype in issuesBySubtype) {
-                   var issuesOfSubtype = issuesBySubtype[issueSubtype];
-                   tags[prefix + ':' + issueType + ':' + issueSubtype] = context.cleanTagValue(issuesOfSubtype.length.toString());
-                 }
+               if (isCollapsed) {
+                 context.ui().onResize([-sidebarWidth * scaleX, 0]);
                } else {
-                 tags[prefix + ':' + issueType] = context.cleanTagValue(issuesOfType.length.toString());
+                 context.ui().onResize([-dx * scaleX, 0]);
                }
              }
-           } // add counts of warnings generated by the user's edits
-
+           }
 
-           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
+           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);
+           }
 
-           addIssueCounts(warnings, 'warnings'); // add counts of issues resolved by the user's edits
+           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 resolvedIssues = context.validator().getResolvedIssues();
-           addIssueCounts(resolvedIssues, 'resolved');
-           context.changeset = context.changeset.update({
-             tags: tags
-           });
-         }
+           var hoverModeSelect = function hoverModeSelect(targets) {
+             context.container().selectAll('.feature-list-item button').classed('hover', false);
 
-         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
+             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 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 (!elements.empty()) {
+                 elements.classed('hover', true);
+               }
+             }
+           };
 
-           body.call(commitWarnings); // Upload Explanation
+           sidebar.hoverModeSelect = throttle(hoverModeSelect, 200);
 
-           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]);
+           function hover(targets) {
+             var datum = targets && targets.length && targets[0];
 
-           if (prose.enter().size()) {
-             // first time, make sure to update user details in prose
-             _userDetails = null;
-           }
+             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;
 
-           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
+               if (osm) {
+                 datum = osm.getNote(datum.id); // marker may contain stale data - get latest
+               }
 
-           osm.userDetails(function (err, user) {
-             if (err) return;
-             if (_userDetails === user) return; // no change
+               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];
 
-             _userDetails = user;
-             var userLink = select(document.createElement('div'));
+               if (errService) {
+                 // marker may contain stale data - get latest
+                 datum = errService.getError(datum.id);
+               } // Currently only three possible services
 
-             if (user.image_url) {
-               userLink.append('img').attr('src', user.image_url).attr('class', 'icon pre-text user-icon');
-             }
 
-             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 errEditor;
 
-           var requestReview = saveSection.selectAll('.request-review').data([0]); // Enter
+               if (datum.service === 'keepRight') {
+                 errEditor = keepRightEditor;
+               } else if (datum.service === 'osmose') {
+                 errEditor = osmoseEditor;
+               } else {
+                 errEditor = improveOsmEditor;
+               }
 
-           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);
+               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 (!labelEnter.empty()) {
-             labelEnter.call(uiTooltip().title(_t.html('commit.request_review_info')).placement('top'));
+               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();
+             }
            }
 
-           labelEnter.append('input').attr('type', 'checkbox').attr('id', requestReviewDomId);
-           labelEnter.append('span').html(_t.html('commit.request_review')); // Update
-
-           requestReview = requestReview.merge(requestReviewEnter);
-           var requestReviewInput = requestReview.selectAll('input').property('checked', isReviewRequested(context.changeset.tags)).on('change', toggleRequestReview); // Buttons
+           sidebar.hover = throttle(hover, 200);
 
-           var buttonSection = saveSection.selectAll('.buttons').data([0]); // enter
+           sidebar.intersects = function (extent) {
+             var rect = selection.node().getBoundingClientRect();
+             return extent.intersects([context.projection.invert([0, rect.height]), context.projection.invert([rect.width, 0])]);
+           };
 
-           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
+           sidebar.select = function (ids, newFeature) {
+             sidebar.hide();
 
-           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
+             if (ids && ids.length) {
+               var entity = ids.length === 1 && context.entity(ids[0]);
 
-               for (var key in context.changeset.tags) {
-                 // remove any empty keys before upload
-                 if (!key) delete context.changeset.tags[key];
+               if (entity && newFeature && selection.classed('collapsed')) {
+                 // uncollapse the sidebar
+                 var extent = entity.extent(context.graph());
+                 sidebar.expand(sidebar.intersects(extent));
                }
 
-               context.uploader().save(context.changeset);
-             }
-           }); // remove any existing tooltip
-
-           uiTooltip().destroyAny(buttonSection.selectAll('.save-button'));
-
-           if (uploadBlockerTooltipText) {
-             buttonSection.selectAll('.save-button').call(uiTooltip().title(uploadBlockerTooltipText).placement('top'));
-           } // Raw Tag Editor
-
+               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
 
-           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
+               inspector.state('select').entityIDs(ids).newFeature(newFeature);
+               inspectorWrap.call(inspector);
+             } else {
+               inspector.state('hide');
+             }
+           };
 
-           changesSection.call(commitChanges.render);
+           sidebar.showPresetList = function () {
+             inspector.showList();
+           };
 
-           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);
-           }
-         }
+           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);
+           };
 
-         function getUploadBlockerMessage() {
-           var errors = context.validator().getIssuesBySeverity({
-             what: 'edited',
-             where: 'all'
-           }).error;
+           sidebar.hide = function () {
+             featureListWrap.classed('inspector-hidden', false);
+             inspectorWrap.classed('inspector-hidden', true);
+             if (_current) _current.remove();
+             _current = null;
+           };
 
-           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;
+           sidebar.expand = function (moveMap) {
+             if (selection.classed('collapsed')) {
+               sidebar.toggle(moveMap);
+             }
+           };
 
-             if (!hasChangesetComment) {
-               return _t('commit.comment_needed_message');
+           sidebar.collapse = function (moveMap) {
+             if (!selection.classed('collapsed')) {
+               sidebar.toggle(moveMap);
              }
-           }
+           };
 
-           return null;
-         }
+           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
 
-         function changeTags(_, changed, onInput) {
-           if (changed.hasOwnProperty('comment')) {
-             if (changed.comment === undefined) {
-               changed.comment = '';
-             }
+             selection.style('width', sidebarWidth + 'px');
+             var startMargin, endMargin, lastMargin;
 
-             if (!onInput) {
-               corePreferences('comment', changed.comment);
-               corePreferences('commentDate', Date.now());
+             if (isCollapsing) {
+               startMargin = lastMargin = 0;
+               endMargin = -sidebarWidth;
+             } else {
+               startMargin = lastMargin = -sidebarWidth;
+               endMargin = 0;
              }
-           }
 
-           if (changed.hasOwnProperty('source')) {
-             if (changed.source === undefined) {
-               corePreferences('source', null);
-             } else if (!onInput) {
-               corePreferences('source', changed.source);
-               corePreferences('commentDate', Date.now());
+             if (!isCollapsing) {
+               // unhide the sidebar's content before it transitions onscreen
+               selection.classed('collapsed', isCollapsing);
              }
-           } // no need to update `prefs` for `hashtags` here since it's done in `updateChangeset`
 
+             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 %
 
-           updateChangeset(changed, onInput);
 
-           if (_selection) {
-             _selection.call(render);
-           }
-         }
+               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
 
-         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);
-           }
+           resizer.on('dblclick', function (d3_event) {
+             d3_event.preventDefault();
 
-           if (!detectedHashtags.length || !commentOnly) {
-             detectedHashtags = detectedHashtags.concat(hashtagHashtags());
-           }
+             if (d3_event.sourceEvent) {
+               d3_event.sourceEvent.preventDefault();
+             }
 
-           var allLowerCase = new Set();
-           return detectedHashtags.filter(function (hashtag) {
-             // Compare tags as lowercase strings, but keep original case tags
-             var lowerCase = hashtag.toLowerCase();
+             sidebar.toggle();
+           }); // ensure hover sidebar is closed when zooming out beyond editable zoom
 
-             if (!allLowerCase.has(lowerCase)) {
-               allLowerCase.add(lowerCase);
-               return true;
+           context.map().on('crossEditableZoom.sidebar', function (within) {
+             if (!within && !selection.select('.inspector-hover').empty()) {
+               hover([]);
              }
+           });
+         }
 
-             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`
+         sidebar.showPresetList = function () {};
 
+         sidebar.hover = function () {};
 
-           function hashtagHashtags() {
-             var matches = (tags.hashtags || '').split(/[,;\s]+/).map(function (s) {
-               if (s[0] !== '#') {
-                 s = '#' + s;
-               } // prepend '#'
+         sidebar.hover.cancel = function () {};
 
+         sidebar.intersects = function () {};
 
-               var matched = s.match(hashtagRegex);
-               return matched && matched[0];
-             }).filter(Boolean); // exclude falsy
+         sidebar.select = function () {};
 
-             return matches || [];
-           }
-         }
+         sidebar.show = function () {};
 
-         function isReviewRequested(tags) {
-           var rr = tags.review_requested;
-           if (rr === undefined) return false;
-           rr = rr.trim().toLowerCase();
-           return !(rr === '' || rr === 'no');
-         }
+         sidebar.hide = function () {};
 
-         function updateChangeset(changed, onInput) {
-           var tags = Object.assign({}, context.changeset.tags); // shallow copy
+         sidebar.expand = function () {};
 
-           Object.keys(changed).forEach(function (k) {
-             var v = changed[k];
-             k = context.cleanTagKey(k);
-             if (readOnlyTags.indexOf(k) !== -1) return;
+         sidebar.collapse = function () {};
 
-             if (v === undefined) {
-               delete tags[k];
-             } else if (onInput) {
-               tags[k] = v;
-             } else {
-               tags[k] = context.cleanTagValue(v);
-             }
-           });
+         sidebar.toggle = function () {};
 
-           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);
+         return sidebar;
+       }
 
-             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 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.html('self_intersection.error.areas'))();
+         });
+         mode.wayID = wayID;
 
+         mode.enter = function () {
+           context.install(behavior);
+         };
 
-           if (_userDetails && _userDetails.changesets_count !== undefined) {
-             var changesetsCount = parseInt(_userDetails.changesets_count, 10) + 1; // #4283
+         mode.exit = function () {
+           context.uninstall(behavior);
+         };
 
-             tags.changesets_count = String(changesetsCount); // first 100 edits - new user
+         mode.selectedIDs = function () {
+           return [wayID];
+         };
 
-             if (changesetsCount <= 100) {
-               var s;
-               s = corePreferences('walkthrough_completed');
+         mode.activeID = function () {
+           return behavior && behavior.activeID() || [];
+         };
 
-               if (s) {
-                 tags['ideditor:walkthrough_completed'] = s;
-               }
+         return mode;
+       }
 
-               s = corePreferences('walkthrough_progress');
+       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');
 
-               if (s) {
-                 tags['ideditor:walkthrough_progress'] = s;
-               }
+         function actionClose(wayId) {
+           return function (graph) {
+             return graph.replace(graph.entity(wayId).close());
+           };
+         }
 
-               s = corePreferences('walkthrough_started');
+         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));
+         }
 
-               if (s) {
-                 tags['ideditor:walkthrough_started'] = s;
-               }
-             }
-           } else {
-             delete tags.changesets_count;
-           }
+         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));
+         }
 
-           if (!fastDeepEqual(context.changeset.tags, tags)) {
-             context.changeset = context.changeset.update({
-               tags: tags
-             });
-           }
+         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));
          }
 
-         commit.reset = function () {
-           context.changeset = null;
+         mode.enter = function () {
+           context.install(behavior);
          };
 
-         return utilRebind(commit, dispatch, 'on');
-       }
-
-       // for punction see https://stackoverflow.com/a/21224179
+         mode.exit = function () {
+           context.uninstall(behavior);
+         };
 
-       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());
+         return mode;
        }
 
-       // `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
-       //   }
-       //
-
-       function resolveStrings(item, defaults, localizerFn) {
-         var itemStrings = Object.assign({}, item.strings); // shallow clone
-
-         var defaultStrings = Object.assign({}, defaults[item.type]); // shallow clone
-
-         var anyToken = new RegExp(/(\{\w+\})/, 'gi'); // Pre-localize the item and default strings
-
-         if (localizerFn) {
-           if (itemStrings.community) {
-             var communityID = simplify(itemStrings.community);
-             itemStrings.community = localizerFn("_communities.".concat(communityID));
-           }
+       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');
 
-           ['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));
+         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));
          }
 
-         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 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));
          }
 
-         if (!replacements.url) {
-           replacements.url = resolve(itemStrings.url || defaultStrings.url);
+         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));
          }
 
-         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;
+         mode.enter = function () {
+           context.install(behavior);
+         };
 
-           for (var key in replacements) {
-             var token = "{".concat(key, "}");
-             var regex = new RegExp(token, 'g');
+         mode.exit = function () {
+           context.uninstall(behavior);
+         };
 
-             if (regex.test(result)) {
-               var replacement = replacements[key];
+         return mode;
+       }
 
-               if (!replacement) {
-                 throw new Error("Cannot resolve token: ".concat(token));
-               } else {
-                 if (addLinks && (key === 'signupUrl' || key === 'url')) {
-                   replacement = linkify(replacement);
-                 }
+       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');
 
-                 result = result.replace(regex, replacement);
-               }
-             }
-           } // There shouldn't be any leftover tokens in a resolved string
+         function add(loc) {
+           var node = osmNode({
+             loc: loc,
+             tags: defaultTags
+           });
+           context.perform(actionAddEntity(node), _t('operations.add.annotation.point'));
+           enterSelectMode(node);
+         }
 
+         function addWay(loc, edge) {
+           var node = osmNode({
+             tags: defaultTags
+           });
+           context.perform(actionAddMidpoint({
+             loc: loc,
+             edge: edge
+           }, node), _t('operations.add.annotation.vertex'));
+           enterSelectMode(node);
+         }
 
-           var leftovers = result.match(anyToken);
+         function enterSelectMode(node) {
+           context.enter(modeSelect(context, [node.id]).newFeature(true));
+         }
 
-           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
+         function addNode(node) {
+           if (Object.keys(defaultTags).length === 0) {
+             enterSelectMode(node);
+             return;
+           }
 
+           var tags = Object.assign({}, node.tags); // shallow copy
 
-           if (addLinks && item.type === 'reddit') {
-             result = result.replace(/(\/r\/\w+\/*)/i, function (match) {
-               return linkify(resolved.url, match);
-             });
+           for (var key in defaultTags) {
+             tags[key] = defaultTags[key];
            }
 
-           return result;
+           context.perform(actionChangeTags(node.id, tags), _t('operations.add.annotation.point'));
+           enterSelectMode(node);
          }
 
-         function linkify(url, text) {
-           if (!url) return undefined;
-           text = text || url;
-           return "<a target=\"_blank\" href=\"".concat(url, "\">").concat(text, "</a>");
+         function cancel() {
+           context.enter(modeBrowse(context));
          }
-       }
-
-       var _oci = null;
-       function uiSuccess(context) {
-         var MAXEVENTS = 2;
-         var dispatch = dispatch$8('cancel');
 
-         var _changeset;
+         mode.enter = function () {
+           context.install(behavior);
+         };
 
-         var _location;
+         mode.exit = function () {
+           context.uninstall(behavior);
+         };
 
-         ensureOSMCommunityIndex(); // start fetching the data
+         return mode;
+       }
 
-         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
+       function modeSelectNote(context, selectedNoteID) {
+         var mode = {
+           id: 'select-note',
+           button: 'browse'
+         };
 
-             if (vals[0] && Array.isArray(vals[0].features)) {
-               _mainLocations.mergeCustomGeoJSON(vals[0]);
-             }
+         var _keybinding = utilKeybinding('select-note');
 
-             var ociResources = Object.values(vals[1].resources);
+         var _noteEditor = uiNoteEditor(context).on('change', function () {
+           context.map().pan([0, 0]); // trigger a redraw
 
-             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
-               };
-               return _oci;
-             }
-           });
-         } // string-to-date parsing in JavaScript is weird
+           var note = checkSelectedID();
+           if (!note) return;
+           context.ui().sidebar.show(_noteEditor.note(note));
+         });
 
+         var _behaviors = [behaviorBreathe(), behaviorHover(context), behaviorSelect(context), behaviorLasso(context), modeDragNode(context).behavior, modeDragNote(context).behavior];
+         var _newFeature = false;
 
-         function parseEventDate(when) {
-           if (!when) return;
-           var raw = when.trim();
-           if (!raw) return;
+         function checkSelectedID() {
+           if (!services.osm) return;
+           var note = services.osm.getNote(selectedNoteID);
 
-           if (!/Z$/.test(raw)) {
-             // if no trailing 'Z', add one
-             raw += 'Z'; // this forces date to be parsed as a UTC date
+           if (!note) {
+             context.enter(modeBrowse(context));
            }
 
-           var parsed = new Date(raw);
-           return new Date(parsed.toUTCString().substr(0, 25)); // convert to local timezone
-         }
-
-         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..
-
-           ensureOSMCommunityIndex().then(function (oci) {
-             var loc = context.map().center();
-             var validLocations = _mainLocations.locationsAt(loc); // Gather the communities
+           return note;
+         } // class the note as selected, or return to browse mode if the note is gone
 
-             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));
-               };
+         function selectNote(d3_event, drawn) {
+           if (!checkSelectedID()) return;
+           var selection = context.surface().selectAll('.layer-notes .note-' + selectedNoteID);
 
-               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
+           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;
 
-             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 (drawn && source && (source.type === 'pointermove' || source.type === 'mousemove' || source.type === 'touchmove')) {
+               context.enter(modeBrowse(context));
+             }
+           } else {
+             selection.classed('selected', true);
+             context.selectedNoteID(selectedNoteID);
+           }
          }
 
-         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'));
+         function esc() {
+           if (context.container().select('.combobox').size()) return;
+           context.enter(modeBrowse(context));
          }
 
-         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..
+         mode.zoomToSelected = function () {
+           if (!services.osm) return;
+           var note = services.osm.getNote(selectedNoteID);
 
-           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));
+           if (note) {
+             context.map().centerZoomEase(note.loc, 20);
            }
+         };
 
-           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);
-           }
+         mode.newFeature = function (val) {
+           if (!arguments.length) return _newFeature;
+           _newFeature = val;
+           return mode;
+         };
 
-           function showMore(selection) {
-             var more = selection.selectAll('.community-more').data([0]);
-             var moreEnter = more.enter().append('div').attr('class', 'community-more');
+         mode.enter = function () {
+           var note = checkSelectedID();
+           if (!note) return;
 
-             if (d.resolved.extendedDescriptionHTML) {
-               moreEnter.append('div').attr('class', 'community-extended-description').html(d.resolved.extendedDescriptionHTML);
-             }
+           _behaviors.forEach(context.install);
 
-             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
-               }));
-             }
-           }
+           _keybinding.on(_t('inspector.zoom_to.key'), mode.zoomToSelected).on('⎋', esc, true);
 
-           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;
+           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
 
-               if (d.i18n && d.id) {
-                 name = _t("community.".concat(communityID, ".events.").concat(d.id, ".name"), {
-                   "default": name
-                 });
-               }
+           sidebar.expand(sidebar.intersects(note.extent()));
+           context.map().on('drawn.select', selectNote);
+         };
 
-               return name;
-             });
-             itemEnter.append('div').attr('class', 'community-event-when').html(function (d) {
-               var options = {
-                 weekday: 'short',
-                 day: 'numeric',
-                 month: 'short',
-                 year: 'numeric'
-               };
+         mode.exit = function () {
+           _behaviors.forEach(context.uninstall);
 
-               if (d.date.getHours() || d.date.getMinutes()) {
-                 // include time if it has one
-                 options.hour = 'numeric';
-                 options.minute = 'numeric';
-               }
+           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 d.date.toLocaleString(_mainLocalizer.localeCode(), options);
-             });
-             itemEnter.append('div').attr('class', 'community-event-where').html(function (d) {
-               var where = d.where;
+         return mode;
+       }
 
-               if (d.i18n && d.id) {
-                 where = _t("community.".concat(communityID, ".events.").concat(d.id, ".where"), {
-                   "default": where
-                 });
-               }
+       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 where;
-             });
-             itemEnter.append('div').attr('class', 'community-event-description').html(function (d) {
-               var description = d.description;
+         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)
 
-               if (d.i18n && d.id) {
-                 description = _t("community.".concat(communityID, ".events.").concat(d.id, ".description"), {
-                   "default": description
-                 });
-               }
+           context.map().pan([0, 0]);
+           context.selectedNoteID(note.id).enter(modeSelectNote(context, note.id).newFeature(true));
+         }
 
-               return description;
-             });
-           }
+         function cancel() {
+           context.enter(modeBrowse(context));
          }
 
-         success.changeset = function (val) {
-           if (!arguments.length) return _changeset;
-           _changeset = val;
-           return success;
+         mode.enter = function () {
+           context.install(behavior);
          };
 
-         success.location = function (val) {
-           if (!arguments.length) return _location;
-           _location = val;
-           return success;
+         mode.exit = function () {
+           context.uninstall(behavior);
          };
 
-         return utilRebind(success, dispatch, 'on');
+         return mode;
        }
 
        function modeSave(context) {
              } // update
 
 
-             buttons = buttons.merge(buttonsEnter).classed('disabled', function (d) {
+             buttons = buttons.merge(buttonsEnter).attr('aria-disabled', function (d) {
                return !enabled();
+             }).classed('disabled', function (d) {
+               return !enabled();
+             }).attr('aria-pressed', function (d) {
+               return context.mode() && context.mode().button === d.button;
              }).classed('active', function (d) {
                return context.mode() && context.mode().button === d.button;
              });
 
              buttons = buttons.merge(buttonsEnter).classed('disabled', function (d) {
                return !enabled();
+             }).attr('aria-disabled', function (d) {
+               return !enabled();
              }).classed('active', function (d) {
                return context.mode() && context.mode().button === d.button;
+             }).attr('aria-pressed', function (d) {
+               return context.mode() && context.mode().button === d.button;
              });
            }
          };
 
            if (button) {
              button.classed('disabled', isDisabled()).style('background', bgColor());
-             button.select('span.count').html(_numChanges);
+             button.select('span.count').text(_numChanges);
            }
          }
 
              lastPointerUpType = null;
            }).call(tooltipBehavior);
            button.call(svgIcon('#iD-icon-save'));
-           button.append('span').attr('class', 'count').attr('aria-hidden', 'true').html('0');
+           button.append('span').attr('class', 'count').attr('aria-hidden', 'true').text('0');
            updateCount();
            context.keybinding().on(key, save, true);
            context.history().on('change.save', updateCount);
          };
 
          tool.render = function (selection) {
-           selection.append('button').attr('class', 'bar-button').on('click', function () {
+           selection.append('button').attr('class', 'bar-button').attr('aria-label', _t('sidebar.tooltip')).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')));
          };
 
              if (editable() && (lastPointerUpType === 'touch' || lastPointerUpType === 'pen')) {
                // there are no tooltips for touch interactions so flash feedback instead
-               var text = annotation ? _t(d.id + '.tooltip', {
+               var text = annotation ? _t.html(d.id + '.tooltip', {
                  action: annotation
-               }) : _t(d.id + '.nothing');
+               }) : _t.html(d.id + '.nothing');
                context.ui().flash.duration(2000).iconName('#' + d.icon).iconClass(annotation ? '' : 'disabled').label(text)();
              }
 
          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;
-           }
-
-           corePreferences('sawVersion', currVersion);
-           sawVersion = currVersion;
-         }
-
-         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: '-'
-         }];
-
-         function zoomIn(d3_event) {
-           if (d3_event.shiftKey) return;
-           d3_event.preventDefault();
-           context.map().zoomIn();
-         }
-
-         function zoomOut(d3_event) {
-           if (d3_event.shiftKey) return;
-           d3_event.preventDefault();
-           context.map().zoomOut();
-         }
-
-         function zoomInFurther(d3_event) {
-           if (d3_event.shiftKey) return;
-           d3_event.preventDefault();
-           context.map().zoomInFurther();
-         }
-
-         function zoomOutFurther(d3_event) {
-           if (d3_event.shiftKey) return;
-           d3_event.preventDefault();
-           context.map().zoomOutFurther();
-         }
-
-         return function (selection) {
-           var tooltipBehavior = uiTooltip().placement(_mainLocalizer.textDirection() === 'rtl' ? 'right' : 'left').title(function (d) {
-             if (d.disabled()) {
-               return d.disabledTitle;
-             }
-
-             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)();
-             }
-
-             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);
-
-               if (!selection.select('.tooltip.in').empty()) {
-                 selection.call(tooltipBehavior.updateContent);
-               }
-             });
-           }
-
-           updateButtonStates();
-           context.map().on('move.uiZoom', updateButtonStates);
-         };
-       }
-
        function uiZoomToSelection(context) {
          function isDisabled() {
            var mode = context.mode();
            var heading = _paneSelection.append('div').attr('class', 'pane-heading');
 
            heading.append('h2').html(_label);
-           heading.append('button').on('click', hidePane).call(svgIcon('#iD-icon-close'));
+           heading.append('button').attr('title', _t('icons.close')).on('click', hidePane).call(svgIcon('#iD-icon-close'));
 
            _paneSelection.append('div').attr('class', 'pane-content').call(pane.renderContent);
 
            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
 
-           var slidersEnter = containerEnter.selectAll('.display-control').data(_sliders).enter().append('div').attr('class', function (d) {
+           var slidersEnter = containerEnter.selectAll('.display-control').data(_sliders).enter().append('label').attr('class', function (d) {
              return 'display-control display-control-' + d;
            });
-           slidersEnter.append('h5').html(function (d) {
+           slidersEnter.html(function (d) {
              return _t.html('background.' + d);
            }).append('span').attr('class', function (d) {
              return 'display-option-value display-option-value-' + d;
 
              updateValue(d, val);
            });
-           sildersControlEnter.append('button').attr('title', _t('background.reset')).attr('class', function (d) {
+           sildersControlEnter.append('button').attr('title', function (d) {
+             return "".concat(_t('background.reset'), " ").concat(_t('background.' + d));
+           }).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
 
-           containerEnter.append('a').attr('class', 'display-option-resetlink').attr('href', '#').html(_t.html('background.reset_all')).on('click', function (d3_event) {
+           containerEnter.append('a').attr('class', 'display-option-resetlink').attr('role', 'button').attr('href', '#').call(_t.append('background.reset_all')).on('click', function (d3_event) {
              d3_event.preventDefault();
 
              for (var i = 0; i < _sliders.length; i++) {
            container.selectAll('.display-option-input').property('value', function (d) {
              return _options[d];
            });
-           container.selectAll('.display-option-value').html(function (d) {
+           container.selectAll('.display-option-value').text(function (d) {
              return Math.floor(_options[d] * 100) + '%';
            });
            container.selectAll('.display-option-reset').classed('disabled', function (d) {
            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'));
+           modal.select('.modal-section.header').append('h3').call(_t.append('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.insert('button', '.ok-button').attr('class', 'button cancel-button secondary-action').call(_t.append('confirm.cancel'));
            buttonSection.select('.cancel-button').on('click.cancel', clickCancel);
            buttonSection.select('.ok-button').attr('disabled', isSaveDisabled).on('click.save', clickSave);
 
              d3_event.preventDefault();
              uiMapInMap.toggle();
            });
-           minimapLabelEnter.append('span').html(_t.html('background.minimap.description'));
+           minimapLabelEnter.append('span').call(_t.append('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'));
+           panelLabelEnter.append('span').call(_t.append('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
+           locPanelLabelEnter.append('span').call(_t.append('background.location_panel.description')); // "Info / Report a Problem" link
 
-           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'));
+           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').call(_t.append('background.imagery_problem_faq'));
 
            _backgroundList.call(drawListItems, 'radio', function (d3_event, d) {
              chooseBackground(d);
          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'));
+           containerEnter.append('div').attr('class', 'nudge-instructions').call(_t.append('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) {
+           nudgeEnter.append('div').attr('class', 'nudge-inner-rect').append('input').attr('type', 'text').attr('aria-label', _t('background.offset_label')).on('change', inputOffset);
+           nudgeWrapEnter.append('div').selectAll('button').data(_directions).enter().append('button').attr('title', function (d) {
+             return _t("background.nudge.".concat(d[0]));
+           }).attr('class', function (d) {
              return d[0] + ' nudge';
            }).on('click', function (d3_event, d) {
              nudge(d[1]);
            }
 
            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) {
+           var menuItems = toc.selectAll('li').data(docs).enter().append('li').append('a').attr('role', 'button').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'));
+           shortcuts.append('div').call(_t.append('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'));
+           walkthrough.append('div').call(_t.append('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');
          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'),
+           return _t.html('inspector.title_count', {
+             title: {
+               html: _t.html('issues.' + severity + 's.list_title')
+             },
              count: issueCountText
            });
          }).disclosureContent(renderDisclosureContent).shouldDisplay(function () {
            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;
+             return d.key;
            }); // Exit
 
            items.exit().remove(); // Enter
             linkEnter
                .append('span')
                .attr('class', 'autofix-all-link-text')
-               .html(t.html('issues.fix_all.title'));
+               .call(t.append('issues.fix_all.title'));
             linkEnter
                .append('span')
                .attr('class', 'autofix-all-link-icon')
            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) {
+           ruleLinks.append('a').attr('class', 'issue-rules-link').attr('role', 'button').attr('href', '#').call(_t.append('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) {
+           ruleLinks.append('a').attr('class', 'issue-rules-link').attr('role', 'button').attr('href', '#').call(_t.append('issues.enable_all')).on('click', function (d3_event) {
              d3_event.preventDefault();
              context.validator().disableRules([]);
            }); // Update
              var params = {};
 
              if (d === 'unsquare_way') {
-               params.val = '<span class="square-degrees"></span>';
+               params.val = {
+                 html: '<span class="square-degrees"></span>'
+               };
              }
 
              return _t.html('issues.' + d + '.title', params);
            resetIgnoredEnter.append('a').attr('href', '#'); // update
 
            resetIgnored = resetIgnored.merge(resetIgnoredEnter);
-           resetIgnored.select('a').html(_t('inspector.title_count', {
-             title: _t.html('issues.reset_ignored'),
+           resetIgnored.select('a').html(_t.html('inspector.title_count', {
+             title: {
+               html: _t.html('issues.reset_ignored')
+             },
              count: ignoredIssues.length
            }));
            resetIgnored.on('click', function (d3_event) {
                var hiddenIssues = context.validator().getIssues(hiddenOpts);
 
                if (hiddenIssues.length) {
-                 selection.select('.box .details').html(_t.html('issues.no_issues.hidden_issues.' + type, {
+                 selection.select('.box .details').html('').call(_t.append('issues.no_issues.hidden_issues.' + type, {
                    count: hiddenIssues.length.toString()
                  }));
                  return;
                }
              }
 
-             selection.select('.box .details').html(_t.html('issues.no_issues.hidden_issues.none'));
+             selection.select('.box .details').html('').call(_t.append('issues.no_issues.hidden_issues.none'));
            }
 
            var messageType;
              messageType = 'no_edits';
            }
 
-           selection.select('.box .message').html(_t.html('issues.no_issues.message.' + messageType));
+           selection.select('.box .message').html('').call(_t.append('issues.no_issues.message.' + messageType));
          }
 
          context.validator().on('validated.uiSectionValidationStatus', function () {
 
            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'));
+           modal.select('.modal-section.header').append('h3').call(_t.append('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
+           textSection.append('pre').attr('class', 'instructions-file').call(_t.append('settings.custom_data.file.instructions'));
+           textSection.append('input').attr('class', 'field-file').attr('type', 'file').attr('accept', '.gpx,.kml,.geojson,.json,application/gpx+xml,application/vnd.google-earth.kml+xml,application/geo+json,application/json').property('files', _currSettings.fileList) // works for all except IE11
            .on('change', function (d3_event) {
              var files = d3_event.target.files;
 
                _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('h4').call(_t.append('settings.custom_data.or'));
+           textSection.append('pre').attr('class', 'instructions-url').call(_t.append('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
 
            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.insert('button', '.ok-button').attr('class', 'button cancel-button secondary-action').call(_t.append('confirm.cancel'));
            buttonSection.select('.cancel-button').on('click.cancel', clickCancel);
            buttonSection.select('.ok-button').attr('disabled', isSaveDisabled).on('click.save', clickSave);
 
            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('h4').attr('class', 'vectortile-header').text('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');
+           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').text('About these layers');
            container = container.merge(containerEnter);
            var ul = container.selectAll('.layer-list-vectortile');
            var li = ul.selectAll('.list-item').data(vtData);
              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) {
+           labelEnter.append('span').text(function (d) {
              return d.name;
            }); // Update
 
            labelEnter.append('input').attr('type', 'checkbox').on('change', function () {
              toggleLayer('data');
            });
-           labelEnter.append('span').html(_t.html('map_data.layers.custom.title'));
+           labelEnter.append('span').call(_t.append('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();
              d3_event.preventDefault();
              context.ui().info.toggle('history');
            });
-           historyPanelLabelEnter.append('span').html(_t.html('map_data.history_panel.title'));
+           historyPanelLabelEnter.append('span').call(_t.append('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'));
+           measurementPanelLabelEnter.append('span').call(_t.append('map_data.measurement_panel.title'));
          }
 
          context.layers().on('change.uiSectionDataLayers', section.reRender);
            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) {
+           footer.append('a').attr('class', 'feature-list-link').attr('role', 'button').attr('href', '#').call(_t.append('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) {
+           footer.append('a').attr('class', 'feature-list-link').attr('role', 'button').attr('href', '#').call(_t.append('issues.enable_all')).on('click', function (d3_event) {
              d3_event.preventDefault();
              context.features().enableAll();
            }); // Update
            });
            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';
+             if (d.id === 'mapillary-signs') titleID = 'mapillary.signs.tooltip';else if (d.id === 'mapillary') titleID = 'mapillary_images.tooltip';else if (d.id === 'kartaview') titleID = 'kartaview_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) {
            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('span').call(_t.append('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);
          return mapDataPane;
        }
 
-       function uiSectionPrivacy(context) {
-         var section = uiSection('preferences-third-party', context).label(_t.html('preferences.privacy.title')).disclosureContent(renderDisclosureContent);
-
-         var _showThirdPartyIcons = corePreferences('preferences.privacy.thirdpartyicons') || 'true';
-
-         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();
-
-           function update() {
-             selection.selectAll('.privacy-third-party-icons-item').classed('active', _showThirdPartyIcons === 'true').select('input').property('checked', _showThirdPartyIcons === 'true');
-           }
-         }
-
-         return section;
-       }
-
        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;
            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');
+           var controlsWrap = overMap.append('div').attr('class', 'map-controls-wrap');
+           var controls = controlsWrap.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
+           controls.append('div').attr('class', 'map-control geolocate-control').call(uiGeolocate(context));
+           controlsWrap.on('wheel.mapControls', function (d3_event) {
+             if (!d3_event.deltaX) {
+               controlsWrap.node().scrollTop += d3_event.deltaY;
+             }
+           }); // Add panes
            // This should happen after map is initialized, as some require surface()
 
            var panes = overMap.append('div').attr('class', 'map-panes');
            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'));
+           issueLinks.append('a').attr('target', '_blank').attr('href', 'https://github.com/openstreetmap/iD/issues').attr('aria-label', _t('report_a_bug')).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').attr('aria-label', _t('help_translate')).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 (!context.embed()) {
 
          var _deferred = new Set();
 
-         context.version = '2.20.1';
+         context.version = '2.20.4';
          context.privacyVersion = '20201202'; // iD will alter the hash so cache the parameters intended to setup the session
 
          context.initialHashParams = window.location.hash ? utilStringQs(window.location.hash) : {};
-         context.isFirstSession = !corePreferences('sawSplash') && !corePreferences('sawPrivacyVersion');
          /* Changeset */
          // An osmChangeset object. Not loaded until needed.
 
 
        function setNsiSources() {
          var nsiVersion = packageJSON.devDependencies['name-suggestion-index'];
-         var v = vparse(nsiVersion);
+         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"),
          var fileMap = _mainFileFetcher.fileMap();
 
          for (var k in sources) {
-           fileMap[k] = sources[k];
+           if (!fileMap[k]) fileMap[k] = sources[k];
          }
        } // `loadNsiPresets()`
        //  Returns a Promise fulfilled when the presets have been downloaded and merged into iD.
        //   `tags`: `Object` containing the feature's OSM tags
        //   `loc`: Location where this feature exists, as a [lon, lat]
        // Returns
-       //   `Object`: The tags the the feature should have, or `null` if no changes needed
+       //   `Object` containing the result, or `null` if no changes needed:
+       //   {
+       //     'newTags': `Object` - The tags the the feature should have
+       //     'matched': `Object` - The matched item
+       //   }
        //
 
 
          var isRouteMaster = tags.type === 'route_master'; // Gather key/value tag pairs to try to match
 
          var tryKVs = gatherKVs(tags);
-         if (!tryKVs.primary.size && !tryKVs.alternate.size) return changed ? newTags : null; // Gather namelike tag values to try to match
+
+         if (!tryKVs.primary.size && !tryKVs.alternate.size) {
+           return changed ? {
+             newTags: newTags,
+             matched: null
+           } : null;
+         } // Gather namelike tag values to try to match
+
 
          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`.
 
          if (foundQID) tryNames.primary.add(foundQID); // matcher will recognize the Wikidata QID as name too
 
-         if (!tryNames.primary.size && !tryNames.alternate.size) return changed ? newTags : null; // Order the [key,value,name] tuples - test primary before alternate
+         if (!tryNames.primary.size && !tryNames.alternate.size) {
+           return changed ? {
+             newTags: newTags,
+             matched: null
+           } : null;
+         } // Order the [key,value,name] tuples - test primary names before alternate names
+
 
          var tuples = gatherTuples(tryKVs, tryNames);
+         var foundPrimary = false;
+         var bestItem; // Test [key,value,name] tuples against the NSI matcher until we get a primary match or exhaust all options.
 
-         var _loop = function _loop(i) {
+         for (var i = 0; i < tuples.length && !foundPrimary; i++) {
            var tuple = tuples[i];
 
            var hits = _nsi.matcher.match(tuple.k, tuple.v, tuple.n, loc); // Attempt to match an item in NSI
 
 
-           if (!hits || !hits.length) return "continue"; // no match, try next tuple
+           if (!hits || !hits.length) continue; // no match, try next tuple
 
-           if (hits[0].match !== 'primary' && hits[0].match !== 'alternate') return "break"; // a generic match, stop looking
+           if (hits[0].match !== 'primary' && hits[0].match !== 'alternate') 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']`
 
-           var itemID = void 0,
-               item = void 0;
-
            for (var j = 0; j < hits.length; j++) {
              var hit = hits[j];
-             itemID = hit.itemID;
+             var isPrimary = hits[j].match === 'primary';
+             var itemID = hit.itemID;
              if (_nsi.dissolved[itemID]) continue; // Don't upgrade to a dissolved item
 
-             item = _nsi.ids.get(itemID);
+             var item = _nsi.ids.get(itemID);
+
              if (!item) continue;
              var mainTag = item.mainTag; // e.g. `brand:wikidata`
 
              !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..
+               continue; // continue looking
+             } // If we get here, the hit is good..
 
 
-           if (!item) return "continue"; // At this point we have matched a canonical item and can suggest tag upgrades..
+             if (!bestItem || isPrimary) {
+               bestItem = item;
 
-           var tkv = item.tkv;
-           var parts = tkv.split('/', 3); // tkv = "tree/key/value"
+               if (isPrimary) {
+                 foundPrimary = true;
+               }
 
-           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)
+               break; // can ignore the rest of the hits from this match
+             }
+           }
+         } // At this point we have matched a canonical item and can suggest tag upgrades..
 
-           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, "$"));
-           });
-           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)
+         if (bestItem) {
+           var _ret = function () {
+             var itemID = bestItem.id;
+             var item = JSON.parse(JSON.stringify(bestItem)); // deep copy
+
+             var tkv = item.tkv;
+             var parts = tkv.split('/', 3); // tkv = "tree/key/value"
 
-           _nsi.kvt.forEach(function (vmap, k) {
-             if (newTags[k] === 'yes') delete newTags[k];
-           }); // Replace mistagged `wikidata`/`wikipedia` with e.g. `brand:wikidata`/`brand:wikipedia`
+             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`)
 
-           if (foundQID) {
-             delete newTags.wikipedia;
-             delete newTags.wikidata;
-           } // Do the tag upgrade
+             ['building', 'emergency', 'internet_access', 'takeaway'].forEach(function (osmkey) {
+               if (k !== osmkey) preserveTags.push("^".concat(osmkey, "$"));
+             });
+             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)
 
+             _nsi.kvt.forEach(function (vmap, k) {
+               if (newTags[k] === 'yes') delete newTags[k];
+             }); // Replace mistagged `wikidata`/`wikipedia` with e.g. `brand:wikidata`/`brand:wikipedia`
 
-           Object.assign(newTags, item.tags, keepTags); // Swap `route` back to `route_master` - name-suggestion-index#5184
 
-           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 (foundQID) {
+               delete newTags.wikipedia;
+               delete newTags.wikidata;
+             } // Do the tag upgrade
 
 
-           var origName = tags.name;
-           var newName = newTags.name;
+             Object.assign(newTags, item.tags, keepTags); // Swap `route` back to `route_master` - name-suggestion-index#5184
 
-           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 (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 (!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\-\/,.]/);
 
-               for (var split = nameParts.length; split > 0; split--) {
-                 var name = nameParts.slice(0, split).join(' '); // e.g. "TUI ReiseCenter"
+             var origName = tags.name;
+             var newName = newTags.name;
 
-                 var branch = nameParts.slice(split).join(' '); // e.g. "Neuss Innenstadt"
+             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
 
-                 var nameHits = _nsi.matcher.match(k, v, name, loc);
+               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\-\/,.]/);
 
-                 if (!nameHits || !nameHits.length) continue; // no match, try next name fragment
+                 for (var split = nameParts.length; split > 0; split--) {
+                   var name = nameParts.slice(0, split).join(' '); // e.g. "TUI ReiseCenter"
 
-                 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);
+                   var branch = nameParts.slice(split).join(' '); // e.g. "Neuss Innenstadt"
 
-                       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
+                   var nameHits = _nsi.matcher.match(k, v, name, loc);
 
+                   if (!nameHits || !nameHits.length) continue; // no match, try next name fragment
+
+                   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 {
-                         // "branch" is not noise and not something in NSI
-                         newTags.branch = branch; // Stick it in the `branch` tag..
+                         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..
+                         }
                        }
                      }
-                   }
 
-                   break;
+                     break;
+                   }
                  }
                }
              }
-           }
 
-           return {
-             v: newTags
-           };
-         };
-
-         for (var i = 0; i < tuples.length; i++) {
-           var _ret = _loop(i);
+             return {
+               v: {
+                 newTags: newTags,
+                 matched: item
+               }
+             };
+           }();
 
-           if (_ret === "continue") continue;
-           if (_ret === "break") break;
            if (_typeof(_ret) === "object") return _ret.v;
          }
 
-         return changed ? newTags : null;
+         return changed ? {
+           newTags: newTags,
+           matched: null
+         } : null;
        } // `_isGenericName()`
        // Is the `name` tag generic?
        //
          //   `tags`: `Object` containing the feature's OSM tags
          //   `loc`: Location where this feature exists, as a [lon, lat]
          // Returns
-         //   `Object`: The tags the the feature should have, or `null` if no change
+         //   `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);
          }
        };
 
-       var apibase$1 = 'https://openstreetcam.org';
+       var apibase$1 = 'https://kartaview.org';
        var maxResults$1 = 1000;
        var tileZoom$1 = 14;
        var tiler$3 = utilTiler().zoomExtent([tileZoom$1, tileZoom$1]).skipNullIsland(true);
          }, []);
        }
 
-       var serviceOpenstreetcam = {
+       var serviceKartaview = {
          init: function init() {
            if (!_oscCache) {
              this.reset();
            loadTiles$1('images', url, projection);
          },
          ensureViewerLoaded: function ensureViewerLoaded(context) {
-           if (_loadViewerPromise$1) return _loadViewerPromise$1; // add osc-wrapper
+           if (_loadViewerPromise$1) return _loadViewerPromise$1; // add kartaview-wrapper
 
-           var wrap = context.container().select('.photoviewer').selectAll('.osc-wrapper').data([0]);
+           var wrap = context.container().select('.photoviewer').selectAll('.kartaview-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);
+           var wrapEnter = wrap.enter().append('div').attr('class', 'photo-wrapper kartaview-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
+           controlsEnter.append('button').on('click.back', step(-1)).text('◄');
+           controlsEnter.append('button').on('click.rotate-ccw', rotate(-90)).text('⤿');
+           controlsEnter.append('button').on('click.rotate-cw', rotate(90)).text('⤾');
+           controlsEnter.append('button').on('click.forward', step(1)).text('►');
+           wrapEnter.append('div').attr('class', 'kartaview-image-wrap'); // Register viewer resize handler
 
-           context.ui().photoviewer.on('resize.openstreetcam', function (dimensions) {
+           context.ui().photoviewer.on('resize.kartaview', function (dimensions) {
              imgZoom = d3_zoom().extent([[0, 0], dimensions]).translateExtent([[0, 0], dimensions]).scaleExtent([1, 15]).on('zoom', zoomPan);
            });
 
            function zoomPan(d3_event) {
              var t = d3_event.transform;
-             context.container().select('.photoviewer .osc-image-wrap').call(utilSetTransform, t.x, t.y, t.k);
+             context.container().select('.photoviewer .kartaview-image-wrap').call(utilSetTransform, t.x, t.y, t.k);
            }
 
            function rotate(deg) {
                if (r > 180) r -= 360;
                if (r < -180) r += 360;
                sequence.rotation = r;
-               var wrap = context.container().select('.photoviewer .osc-wrapper');
+               var wrap = context.container().select('.photoviewer .kartaview-wrapper');
                wrap.transition().duration(100).call(imgZoom.transform, identity$2);
-               wrap.selectAll('.osc-image').transition().duration(100).style('transform', 'rotate(' + r + 'deg)');
+               wrap.selectAll('.kartaview-image').transition().duration(100).style('transform', 'rotate(' + r + 'deg)');
              };
            }
 
          },
          showViewer: function showViewer(context) {
            var viewer = context.container().select('.photoviewer').classed('hide', false);
-           var isHidden = viewer.selectAll('.photo-wrapper.osc-wrapper.hide').size();
+           var isHidden = viewer.selectAll('.photo-wrapper.kartaview-wrapper.hide').size();
 
            if (isHidden) {
-             viewer.selectAll('.photo-wrapper:not(.osc-wrapper)').classed('hide', true);
-             viewer.selectAll('.photo-wrapper.osc-wrapper').classed('hide', false);
+             viewer.selectAll('.photo-wrapper:not(.kartaview-wrapper)').classed('hide', true);
+             viewer.selectAll('.photo-wrapper.kartaview-wrapper').classed('hide', false);
            }
 
            return this;
            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('');
+           var wrap = context.container().select('.photoviewer .kartaview-wrapper');
+           var imageWrap = wrap.selectAll('.kartaview-image-wrap');
+           var attribution = wrap.selectAll('.photo-attribution').text('');
            wrap.transition().duration(100).call(imgZoom.transform, identity$2);
-           imageWrap.selectAll('.osc-image').remove();
+           imageWrap.selectAll('.kartaview-image').remove();
 
            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)');
+             imageWrap.append('img').attr('class', 'kartaview-image').attr('src', apibase$1 + '/' + d.imagePath).style('transform', 'rotate(' + r + 'deg)');
 
              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('|');
+               attribution.append('a').attr('class', 'captured_by').attr('target', '_blank').attr('href', 'https://kartaview.org/user/' + encodeURIComponent(d.captured_by)).text('@' + d.captured_by);
+               attribution.append('span').text('|');
              }
 
              if (d.captured_at) {
-               attribution.append('span').attr('class', 'captured_at').html(localeDateString(d.captured_at));
-               attribution.append('span').html('|');
+               attribution.append('span').attr('class', 'captured_at').text(localeDateString(d.captured_at));
+               attribution.append('span').text('|');
              }
 
-             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');
+             attribution.append('a').attr('class', 'image-link').attr('target', '_blank').attr('href', 'https://kartaview.org/details/' + d.sequence_id + '/' + d.sequence_index).text('kartaview.org');
            }
 
            return this;
            }) || []; // highlight sibling viewfields on either the selected or the hovered sequences
 
            var highlightedImageKeys = utilArrayUnion(hoveredImageKeys, selectedImageKeys);
-           context.container().selectAll('.layer-openstreetcam .viewfield-group').classed('highlighted', function (d) {
+           context.container().selectAll('.layer-kartaview .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) {
+           context.container().selectAll('.layer-kartaview .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);
+           context.container().selectAll('.layer-kartaview .viewfield-group .viewfield').attr('d', viewfieldPath);
 
            function viewfieldPath() {
              var d = this.parentNode.__data__;
              var hash = utilStringQs(window.location.hash);
 
              if (imageKey) {
-               hash.photo = 'openstreetcam/' + imageKey;
+               hash.photo = 'kartaview/' + imageKey;
              } else {
                delete hash.photo;
              }
          }
        };
 
-       var hashes = createCommonjsModule(function (module, exports) {
+       var hashes$1 = {exports: {}};
+
+       (function (module, exports) {
          (function () {
            var Hashes;
 
                  module.exports = Hashes;
                } // in Narwhal or RingoJS v0.7.0-
                else {
-                   freeExports.Hashes = Hashes;
-                 }
+                 freeExports.Hashes = Hashes;
+               }
              } else {
                // in a browser or Rhino
                window.Hashes = Hashes;
            })(this);
          })(); // IIFE
 
-       });
+       })(hashes$1, hashes$1.exports);
 
-       var sha1 = new hashes.SHA1(); // # xtend
+       var hashes = hashes$1.exports,
+           sha1 = new hashes.SHA1(); // # xtend
 
        var hasOwnProperty$1 = Object.prototype.hasOwnProperty;
 
-       function xtend() {
+       function xtend$1() {
          var target = {};
 
          for (var i = 0; i < arguments.length; i++) {
          return target;
        }
 
-       var ohauth = {};
+       var ohauth$1 = {};
 
-       ohauth.qsString = function (obj) {
+       ohauth$1.qsString = function (obj) {
          return Object.keys(obj).sort().map(function (key) {
-           return ohauth.percentEncode(key) + '=' + ohauth.percentEncode(obj[key]);
+           return ohauth$1.percentEncode(key) + '=' + ohauth$1.percentEncode(obj[key]);
          }).join('&');
        };
 
-       ohauth.stringQs = function (str) {
+       ohauth$1.stringQs = function (str) {
          return str.split('&').filter(function (pair) {
            return pair !== '';
          }).reduce(function (obj, pair) {
          }, {});
        };
 
-       ohauth.rawxhr = function (method, url, data, headers, callback) {
+       ohauth$1.rawxhr = function (method, url, data, headers, callback) {
          var xhr = new XMLHttpRequest(),
              twoHundred = /^20\d$/;
 
          return xhr;
        };
 
-       ohauth.xhr = function (method, url, auth, data, options, callback) {
+       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.authHeader(auth);
-         return ohauth.rawxhr(method, url, data, headers, callback);
+         headers.Authorization = 'OAuth ' + ohauth$1.authHeader(auth);
+         return ohauth$1.rawxhr(method, url, data, headers, callback);
        };
 
-       ohauth.nonce = function () {
+       ohauth$1.nonce = function () {
          for (var o = ''; o.length < 6;) {
            o += '0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz'[Math.floor(Math.random() * 61)];
          }
          return o;
        };
 
-       ohauth.authHeader = function (obj) {
+       ohauth$1.authHeader = function (obj) {
          return Object.keys(obj).sort().map(function (key) {
            return encodeURIComponent(key) + '="' + encodeURIComponent(obj[key]) + '"';
          }).join(', ');
        };
 
-       ohauth.timestamp = function () {
+       ohauth$1.timestamp = function () {
          return ~~(+new Date() / 1000);
        };
 
-       ohauth.percentEncode = function (s) {
+       ohauth$1.percentEncode = function (s) {
          return encodeURIComponent(s).replace(/\!/g, '%21').replace(/\'/g, '%27').replace(/\*/g, '%2A').replace(/\(/g, '%28').replace(/\)/g, '%29');
        };
 
-       ohauth.baseString = function (method, url, params) {
+       ohauth$1.baseString = function (method, url, params) {
          if (params.oauth_signature) delete params.oauth_signature;
-         return [method, ohauth.percentEncode(url), ohauth.percentEncode(ohauth.qsString(params))].join('&');
+         return [method, ohauth$1.percentEncode(url), ohauth$1.percentEncode(ohauth$1.qsString(params))].join('&');
        };
 
-       ohauth.signature = function (oauth_secret, token_secret, baseString) {
-         return sha1.b64_hmac(ohauth.percentEncode(oauth_secret) + '&' + ohauth.percentEncode(token_secret), baseString);
+       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,
         */
 
 
-       ohauth.headerGenerator = function (options) {
+       ohauth$1.headerGenerator = function (options) {
          options = options || {};
          var consumer_key = options.consumer_key || '',
              consumer_secret = options.consumer_secret || '',
            method = method.toUpperCase();
 
            if (typeof extra_params === 'string' && extra_params.length > 0) {
-             extra_params = ohauth.stringQs(extra_params);
+             extra_params = ohauth$1.stringQs(extra_params);
            }
 
            var uri_parts = uri.split('?', 2),
                base_uri = uri_parts[0];
-           var query_params = uri_parts.length === 2 ? ohauth.stringQs(uri_parts[1]) : {};
+           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.timestamp(),
-             oauth_nonce: ohauth.nonce()
+             oauth_timestamp: ohauth$1.timestamp(),
+             oauth_nonce: ohauth$1.nonce()
            };
            if (token) oauth_params.oauth_token = token;
-           var all_params = xtend({}, 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);
+           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);
          };
        };
 
-       var ohauth_1 = ohauth;
+       var ohauth_1 = ohauth$1;
+
+       var resolveUrl$1 = {exports: {}};
 
-       var resolveUrl = createCommonjsModule(function (module, exports) {
+       (function (module, exports) {
          // Copyright 2014 Simon Lydell
          // X11 (“MIT”) Licensed. (See LICENSE.)
          void function (root, factory) {
              module.exports = factory();
            }
          }(commonjsGlobal, function () {
-           function resolveUrl()
-           /* ...urls */
-           {
+           function
+             /* ...urls */
+           resolveUrl() {
              var numUrls = arguments.length;
 
              if (numUrls === 0) {
 
            return resolveUrl;
          });
-       });
+       })(resolveUrl$1);
 
        var assign = make_assign();
        var create$1 = make_create();
        var trim$1 = make_trim();
        var Global$5 = typeof window !== 'undefined' ? window : commonjsGlobal;
-       var util = {
+       var util$6 = {
          assign: assign,
          create: create$1,
          trim: trim$1,
          return val && {}.toString.call(val) === '[object Object]';
        }
 
-       var slice = util.slice;
-       var pluck = util.pluck;
-       var each$6 = util.each;
-       var bind = util.bind;
-       var create = util.create;
-       var isList = util.isList;
-       var isFunction = util.isFunction;
-       var isObject = util.isObject;
+       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
        };
          return store;
        }
 
-       var Global$4 = util.Global;
+       var util$4 = util$6;
+       var Global$4 = util$4.Global;
        var localStorage_1 = {
          name: 'localStorage',
          read: read$5,
        // versions 6 and 7, where no localStorage, etc
        // is available.
 
-       var Global$3 = util.Global;
+       var util$3 = util$6;
+       var Global$3 = util$3.Global;
        var oldFFGlobalStorage = {
          name: 'oldFF-globalStorage',
          read: read$4,
        // versions 6 and 7, where no localStorage, sessionStorage, etc
        // is available.
 
-       var Global$2 = util.Global;
+       var util$2 = util$6;
+       var Global$2 = util$2.Global;
        var oldIEUserDataStorage = {
          name: 'oldIE-userDataStorage',
          write: write$3,
        // doesn't work but cookies do. This implementation is adopted from
        // https://developer.mozilla.org/en-US/docs/Web/API/Storage/LocalStorage
 
-       var Global$1 = util.Global;
-       var trim = util.trim;
+       var util$1 = util$6;
+       var Global$1 = util$1.Global;
+       var trim = util$1.trim;
        var cookieStorage = {
          name: 'cookieStorage',
          read: read$2,
          return new RegExp("(?:^|;\\s*)" + escape(key).replace(/[\-\.\+\*]/g, "\\$&") + "\\s*\\=").test(doc.cookie);
        }
 
+       var util = util$6;
        var Global = util.Global;
        var sessionStorage_1 = {
          name: 'sessionStorage',
          return sessionStorage().clear();
        }
 
-       // 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,
          return {};
        }
 
+       var engine = storeEngine;
+       var storages = all;
        var plugins = [json2];
-       var store_legacy = storeEngine.createStore(all, plugins);
+       var store_legacy = engine.createStore(storages, plugins);
 
        var immutable = extend;
        var hasOwnProperty = Object.prototype.hasOwnProperty;
          return target;
        }
 
+       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.
 
-
        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
 
            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));
+           params.oauth_signature = ohauth.signature(o.oauth_secret, '', ohauth.baseString('POST', url, params));
 
            if (!o.singlepage) {
              // Create a 600x550 popup window in the center of the screen
            // window is redirected to OSM's authorization page.
 
 
-           ohauth_1.xhr('POST', url, params, null, {}, reqTokenDone);
+           ohauth.xhr('POST', url, params, null, {}, reqTokenDone);
            o.loading();
 
            function reqTokenDone(err, xhr) {
              o.done();
              if (err) return callback(err);
-             var resp = ohauth_1.stringQs(xhr.response);
+             var resp = ohauth.stringQs(xhr.response);
              token('oauth_request_token_secret', resp.oauth_token_secret);
-             var authorize_url = o.url + '/oauth/authorize?' + ohauth_1.qsString({
+             var authorize_url = o.url + '/oauth/authorize?' + ohauth.qsString({
                oauth_token: resp.oauth_token,
                oauth_callback: resolveUrl(o.landing)
              });
 
 
            window.authComplete = function (token) {
-             var oauth_token = ohauth_1.stringQs(token.split('?')[1]);
+             var oauth_token = ohauth.stringQs(token.split('?')[1]);
              get_access_token(oauth_token.oauth_token);
              delete window.authComplete;
            }; // ## Getting an request 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
+             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_1.xhr('POST', url, params, null, {}, accessTokenDone);
+             ohauth.xhr('POST', url, params, null, {}, accessTokenDone);
              o.loading();
            }
 
            function accessTokenDone(err, xhr) {
              o.done();
              if (err) return callback(err);
-             var access_token = ohauth_1.stringQs(xhr.response);
+             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);
                  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
+             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_1.xhr('POST', url, params, null, {}, accessTokenDone);
+             ohauth.xhr('POST', url, params, null, {}, accessTokenDone);
              o.loading();
            }
 
            function accessTokenDone(err, xhr) {
              o.done();
              if (err) return callback(err);
-             var access_token = ohauth_1.stringQs(xhr.response);
+             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);
                  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));
+               params = xtend(params, ohauth.stringQs(options.content));
              }
 
              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);
+             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);
            }
 
            function done(err, xhr) {
 
 
          function timenonce(o) {
-           o.oauth_timestamp = ohauth_1.timestamp();
-           o.oauth_nonce = ohauth_1.nonce();
+           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`
 
          var token;
 
-         if (store_legacy.enabled) {
+         if (store.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);
+             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 = {};
            return urlroot + '/' + entity.type + '/' + entity.osmId() + '/history';
          },
          userURL: function userURL(username) {
-           return urlroot + '/user/' + username;
+           return urlroot + '/user/' + encodeURIComponent(username);
          },
          noteURL: function noteURL(note) {
            return urlroot + '/note/' + note.id;
              });
            }).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
+           controlsEnter.append('button').on('click.back', step(-1)).text('◄');
+           controlsEnter.append('button').on('click.forward', step(1)).text('►'); // create working canvas for stitching together images
 
            wrap = wrap.merge(wrapEnter).call(setupCanvas, true); // Register viewer resize handler
 
              _sceneOptions = Object.assign(_sceneOptions, viewstate);
              that.selectImage(context, d.key).showViewer(context);
            });
-           label.append('span').html(_t.html('streetside.hires'));
+           label.append('span').call(_t.append('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('|');
+             captureInfo.append('a').attr('class', 'captured_by').attr('target', '_blank').attr('href', 'https://www.microsoft.com/en-us/maps/streetside').text('©' + yyyy + ' Microsoft');
+             captureInfo.append('span').text('|');
            }
 
            if (d.captured_at) {
-             captureInfo.append('span').attr('class', 'captured_at').html(localeTimestamp(d.captured_at));
+             captureInfo.append('span').attr('class', 'captured_at').text(localeTimestamp(d.captured_at));
            } // Add image links
 
 
            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'));
+           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').call(_t.append('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').call(_t.append('streetside.report'));
            var bubbleIdQuadKey = d.key.toString(4);
            var paddingNeeded = 16 - bubbleIdQuadKey.length;
 
                // 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 re = /network|taxon|genus|species|brand|grape_variety|royal_cypher|listed_status|booth|rating|stars|:output|_hours|_times|_ref|manufacturer|country|target|brewery|cai_scale/;
                var allowUpperCase = re.test(params.key);
                var f = filterValues(allowUpperCase);
                var result = d.data.filter(f).map(valKeyDescription);
          switch (type) {
            case "LineString":
            case "MultiLineString":
-             var lines_1 = [];
+             {
+               var lines_1 = [];
 
-             if (type === "LineString") {
-               coords = [coords];
-             }
+               if (type === "LineString") {
+                 coords = [coords];
+               }
 
-             coords.forEach(function (line) {
-               lineclip(line, bbox, lines_1);
-             });
+               coords.forEach(function (line) {
+                 lineclip(line, bbox, lines_1);
+               });
 
-             if (lines_1.length === 1) {
-               return lineString(lines_1[0], properties);
-             }
+               if (lines_1.length === 1) {
+                 return lineString(lines_1[0], properties);
+               }
 
-             return multiLineString(lines_1, properties);
+               return multiLineString(lines_1, properties);
+             }
 
            case "Polygon":
              return polygon(clipPolygon(coords, bbox), properties);
          osmose: serviceOsmose,
          mapillary: serviceMapillary,
          nsi: serviceNsi,
-         openstreetcam: serviceOpenstreetcam,
+         kartaview: serviceKartaview,
          osm: serviceOsm,
          osmWikibase: serviceOsmWikibase,
          maprules: serviceMapRules,
            var disabled = operation.disabled();
 
            if (disabled) {
-             if (disabled === 'restriction') {
-               return _t('operations.merge.restriction', {
-                 relation: _mainPresetIndex.item('type/restriction').name()
+             if (disabled === 'conflicting_relations') {
+               return _t('operations.merge.conflicting_relations');
+             }
+
+             if (disabled === 'restriction' || disabled === 'connectivity') {
+               return _t('operations.merge.damage_relation', {
+                 relation: _mainPresetIndex.item('type/' + disabled).name()
                });
              }
 
            });
          };
 
+         operation.icon = function () {
+           if (_waysAmount === 'multiple') {
+             return '#iD-operation-split-multiple';
+           } else {
+             return '#iD-operation-split';
+           }
+         };
+
          operation.id = 'split';
          operation.keys = [_t('operations.split.key')];
          operation.title = _t('operations.split.title');
 
                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))();
+                 context.ui().flash.duration(4000).iconName('#iD-icon-no').iconClass('operation disabled').label(_t.html('operations.scale.' + disabled + '.' + multi))();
                } else {
                  var pivot = context.projection(extent.center());
                  var annotation = _t('operations.scale.annotation.' + (isUp ? 'up' : 'down') + '.feature', {
                  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();
              }
            }
 
              /* don't delete untagged members */
              );
              context.perform(deleteAction, _t('operations.delete.annotation.relation'));
+             context.validator().validate();
            }
          };
 
          return mode;
        }
 
-       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());
-         };
-
-         lasso.p = function (_) {
-           if (!arguments.length) return lasso;
-           lasso.coordinates.push(_);
-           draw();
-           return lasso;
-         };
-
-         lasso.close = function () {
-           if (group) {
-             group.call(uiToggle(false, function () {
-               select(this).remove();
-             }));
-           }
-
-           context.container().classed('lasso', false);
-         };
-
-         return lasso;
-       }
-
        function behaviorLasso(context) {
          // use pointer events on supported platforms; fallback to mouse events
          var _pointerPrefix = 'PointerEvent' in window ? 'pointer' : 'mouse';
                serviceMapRules: serviceMapRules,
                serviceNominatim: serviceNominatim,
                serviceNsi: serviceNsi,
-               serviceOpenstreetcam: serviceOpenstreetcam,
+               serviceKartaview: serviceKartaview,
                serviceOsm: serviceOsm,
                serviceOsmWikibase: serviceOsmWikibase,
                serviceStreetside: serviceStreetside,
                svgMidpoints: svgMidpoints,
                svgNotes: svgNotes,
                svgMarkerSegments: svgMarkerSegments,
-               svgOpenstreetcamImages: svgOpenstreetcamImages,
+               svgKartaviewImages: svgKartaviewImages,
                svgOsm: svgOsm,
                svgPassiveVertex: svgPassiveVertex,
                svgPath: svgPath,
                uiFieldCycleway: uiFieldCycleway,
                uiFieldLanes: uiFieldLanes,
                uiFieldLocalized: uiFieldLocalized,
+               uiFieldRoadheight: uiFieldRoadheight,
                uiFieldRoadspeed: uiFieldRoadspeed,
                uiFieldStructureRadio: uiFieldRadio,
                uiFieldRadio: uiFieldRadio,
                utilEntityOrDeepMemberSelector: utilEntityOrDeepMemberSelector,
                utilEntitySelector: utilEntitySelector,
                utilFastMouse: utilFastMouse,
-               utilFetchJson: utilFetchJson,
                utilFunctor: utilFunctor,
                utilGetAllNodes: utilGetAllNodes,
                utilGetSetValue: utilGetSetValue,
                utilKeybinding: utilKeybinding,
                utilNoAuto: utilNoAuto,
                utilObjectOmit: utilObjectOmit,
+               utilCompareIDs: utilCompareIDs,
+               utilOldestID: utilOldestID,
                utilPrefixCSSProperty: utilPrefixCSSProperty,
                utilPrefixDOMProperty: utilPrefixDOMProperty,
                utilQsString: utilQsString,