24 lines
968 B
JavaScript
Executable file
24 lines
968 B
JavaScript
Executable file
'use strict';
|
|
/* eslint-disable es/no-array-prototype-indexof -- required for testing */
|
|
var $ = require('../internals/export');
|
|
var uncurryThis = require('../internals/function-uncurry-this');
|
|
var $IndexOf = require('../internals/array-includes').indexOf;
|
|
var arrayMethodIsStrict = require('../internals/array-method-is-strict');
|
|
|
|
var un$IndexOf = uncurryThis([].indexOf);
|
|
|
|
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
|
|
$({ target: 'Array', proto: true, forced: NEGATIVE_ZERO || !STRICT_METHOD }, {
|
|
indexOf: function indexOf(searchElement /* , fromIndex = 0 */) {
|
|
var fromIndex = arguments.length > 1 ? arguments[1] : undefined;
|
|
return NEGATIVE_ZERO
|
|
// convert -0 to +0
|
|
? un$IndexOf(this, searchElement, fromIndex) || 0
|
|
: $IndexOf(this, searchElement, fromIndex);
|
|
}
|
|
});
|