32 lines
851 B
JavaScript
32 lines
851 B
JavaScript
'use strict';
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var ES = require('es-abstract/es6');
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var $isNaN = Number.isNaN || function isNaN(a) {
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return a !== a;
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};
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var $isFinite = Number.isFinite || function isFinite(n) {
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return typeof n === 'number' && global.isFinite(n);
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};
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var indexOf = Array.prototype.indexOf;
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module.exports = function includes(searchElement) {
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var fromIndex = arguments.length > 1 ? ES.ToInteger(arguments[1]) : 0;
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if (indexOf && !$isNaN(searchElement) && $isFinite(fromIndex) && typeof searchElement !== 'undefined') {
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return indexOf.apply(this, arguments) > -1;
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}
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var O = ES.ToObject(this);
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var length = ES.ToLength(O.length);
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if (length === 0) {
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return false;
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}
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var k = fromIndex >= 0 ? fromIndex : Math.max(0, length + fromIndex);
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while (k < length) {
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if (ES.SameValueZero(searchElement, O[k])) {
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return true;
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}
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k += 1;
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}
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return false;
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};
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