| | |
| | | 'use strict'; |
| | | /* eslint-disable es/no-array-prototype-indexof -- required for testing */ |
| | | /* eslint-disable es-x/no-array-prototype-indexof -- required for testing */ |
| | | var $ = require('../internals/export'); |
| | | var $indexOf = require('../internals/array-includes').indexOf; |
| | | var uncurryThis = require('../internals/function-uncurry-this'); |
| | | var $IndexOf = require('../internals/array-includes').indexOf; |
| | | var arrayMethodIsStrict = require('../internals/array-method-is-strict'); |
| | | |
| | | var nativeIndexOf = [].indexOf; |
| | | var un$IndexOf = uncurryThis([].indexOf); |
| | | |
| | | var NEGATIVE_ZERO = !!nativeIndexOf && 1 / [1].indexOf(1, -0) < 0; |
| | | var NEGATIVE_ZERO = !!un$IndexOf && 1 / un$IndexOf([1], 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 */) { |
| | | var fromIndex = arguments.length > 1 ? arguments[1] : undefined; |
| | | return NEGATIVE_ZERO |
| | | // convert -0 to +0 |
| | | ? nativeIndexOf.apply(this, arguments) || 0 |
| | | : $indexOf(this, searchElement, arguments.length > 1 ? arguments[1] : undefined); |
| | | ? un$IndexOf(this, searchElement, fromIndex) || 0 |
| | | : $IndexOf(this, searchElement, fromIndex); |
| | | } |
| | | }); |