You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
1.3 KiB
36 lines
1.3 KiB
'use strict'; |
|
|
|
var ToIntegerOrInfinity = require('es-abstract/2021/ToIntegerOrInfinity'); |
|
var ToLength = require('es-abstract/2021/ToLength'); |
|
var ToObject = require('es-abstract/2021/ToObject'); |
|
var SameValueZero = require('es-abstract/2021/SameValueZero'); |
|
var $isNaN = require('es-abstract/helpers/isNaN'); |
|
var $isFinite = require('es-abstract/helpers/isFinite'); |
|
var GetIntrinsic = require('get-intrinsic'); |
|
var callBound = require('call-bind/callBound'); |
|
var isString = require('is-string'); |
|
|
|
var $charAt = callBound('String.prototype.charAt'); |
|
var $indexOf = GetIntrinsic('%Array.prototype.indexOf%'); // TODO: use callBind.apply without breaking IE 8 |
|
var $max = GetIntrinsic('%Math.max%'); |
|
|
|
module.exports = function includes(searchElement) { |
|
var fromIndex = arguments.length > 1 ? ToIntegerOrInfinity(arguments[1]) : 0; |
|
if ($indexOf && !$isNaN(searchElement) && $isFinite(fromIndex) && typeof searchElement !== 'undefined') { |
|
return $indexOf.apply(this, arguments) > -1; |
|
} |
|
|
|
var O = ToObject(this); |
|
var length = ToLength(O.length); |
|
if (length === 0) { |
|
return false; |
|
} |
|
var k = fromIndex >= 0 ? fromIndex : $max(0, length + fromIndex); |
|
while (k < length) { |
|
if (SameValueZero(searchElement, isString(O) ? $charAt(O, k) : O[k])) { |
|
return true; |
|
} |
|
k += 1; |
|
} |
|
return false; |
|
};
|
|
|