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