forked from Bitmessage/virtpool
28 lines
731 B
JavaScript
28 lines
731 B
JavaScript
if (!Array.prototype.findIndex) {
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Object.defineProperty(Array.prototype, 'findIndex', {
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value: function(predicate) {
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if (this == null)
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throw new TypeError('"this" is null or not defined');
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var o = Object(this), len = o.length >>> 0;
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if (typeof predicate !== 'function') {
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throw new TypeError('predicate must be a function');
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}
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var thisArg = arguments[1], k = 0;
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while (k < len) {
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var kValue = o[k];
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if (predicate.call(thisArg, kValue, k, o)) {
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return k;
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}
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k++;
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}
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return -1;
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},
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configurable: true,
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writable: true
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})
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} |