}
})()
};
+// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/findIndex
+// https://tc39.github.io/ecma262/#sec-array.prototype.findindex
+if (!Array.prototype.findIndex) {
+ Object.defineProperty(Array.prototype, 'findIndex', {
+ value: function(predicate) {
+ // 1. Let O be ? ToObject(this value).
+ if (this == null) {
+ throw new TypeError('"this" is null or not defined');
+ }
+
+ var o = Object(this);
+
+ // 2. Let len be ? ToLength(? Get(O, "length")).
+ var len = o.length >>> 0;
+
+ // 3. If IsCallable(predicate) is false, throw a TypeError exception.
+ if (typeof predicate !== 'function') {
+ throw new TypeError('predicate must be a function');
+ }
+
+ // 4. If thisArg was supplied, let T be thisArg; else let T be undefined.
+ var thisArg = arguments[1];
+
+ // 5. Let k be 0.
+ var k = 0;
+
+ // 6. Repeat, while k < len
+ while (k < len) {
+ // a. Let Pk be ! ToString(k).
+ // b. Let kValue be ? Get(O, Pk).
+ // c. Let testResult be ToBoolean(? Call(predicate, T, « kValue, k, O »)).
+ // d. If testResult is true, return k.
+ var kValue = o[k];
+ if (predicate.call(thisArg, kValue, k, o)) {
+ return k;
+ }
+ // e. Increase k by 1.
+ k++;
+ }
+
+ // 7. Return -1.
+ return -1;
+ },
+ configurable: true,
+ writable: true
+ });
+}