123456789101112131415161718192021 |
- 'use strict';
- /* eslint-disable es/no-array-prototype-indexof -- required for testing */
- var $ = require('../internals/export');
- var $indexOf = require('../internals/array-includes').indexOf;
- var arrayMethodIsStrict = require('../internals/array-method-is-strict');
- var nativeIndexOf = [].indexOf;
- var NEGATIVE_ZERO = !!nativeIndexOf && 1 / [1].indexOf(1, -0) < 0;
- var STRICT_METHOD = arrayMethodIsStrict('indexOf');
- // `Array.prototype.indexOf` method
- // https://tc39.es/ecma262/#sec-array.prototype.indexof
- $({ target: 'Array', proto: true, forced: NEGATIVE_ZERO || !STRICT_METHOD }, {
- indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {
- return NEGATIVE_ZERO
- // convert -0 to +0
- ? nativeIndexOf.apply(this, arguments) || 0
- : $indexOf(this, searchElement, arguments.length > 1 ? arguments[1] : undefined);
- }
- });
|