Tim van der Lippe | fdbd42e | 2020-04-07 15:14:36 +0100 | [diff] [blame] | 1 | 'use strict'; |
| 2 | |
Tim van der Lippe | bc3a0b7 | 2021-11-08 15:22:37 +0000 | [diff] [blame] | 3 | var ToIntegerOrInfinity = require('es-abstract/2021/ToIntegerOrInfinity'); |
| 4 | var ToLength = require('es-abstract/2021/ToLength'); |
| 5 | var ToObject = require('es-abstract/2021/ToObject'); |
| 6 | var SameValueZero = require('es-abstract/2021/SameValueZero'); |
Tim van der Lippe | fdbd42e | 2020-04-07 15:14:36 +0100 | [diff] [blame] | 7 | var $isNaN = require('es-abstract/helpers/isNaN'); |
| 8 | var $isFinite = require('es-abstract/helpers/isFinite'); |
Tim van der Lippe | 2c89197 | 2021-07-29 16:22:50 +0100 | [diff] [blame] | 9 | var GetIntrinsic = require('get-intrinsic'); |
| 10 | var callBound = require('call-bind/callBound'); |
Tim van der Lippe | fdbd42e | 2020-04-07 15:14:36 +0100 | [diff] [blame] | 11 | var isString = require('is-string'); |
| 12 | |
| 13 | var $charAt = callBound('String.prototype.charAt'); |
| 14 | var $indexOf = GetIntrinsic('%Array.prototype.indexOf%'); // TODO: use callBind.apply without breaking IE 8 |
Tim van der Lippe | bc3a0b7 | 2021-11-08 15:22:37 +0000 | [diff] [blame] | 15 | var $max = GetIntrinsic('%Math.max%'); |
Tim van der Lippe | fdbd42e | 2020-04-07 15:14:36 +0100 | [diff] [blame] | 16 | |
| 17 | module.exports = function includes(searchElement) { |
Tim van der Lippe | bc3a0b7 | 2021-11-08 15:22:37 +0000 | [diff] [blame] | 18 | var fromIndex = arguments.length > 1 ? ToIntegerOrInfinity(arguments[1]) : 0; |
Tim van der Lippe | fdbd42e | 2020-04-07 15:14:36 +0100 | [diff] [blame] | 19 | if ($indexOf && !$isNaN(searchElement) && $isFinite(fromIndex) && typeof searchElement !== 'undefined') { |
| 20 | return $indexOf.apply(this, arguments) > -1; |
| 21 | } |
| 22 | |
| 23 | var O = ToObject(this); |
| 24 | var length = ToLength(O.length); |
| 25 | if (length === 0) { |
| 26 | return false; |
| 27 | } |
Tim van der Lippe | bc3a0b7 | 2021-11-08 15:22:37 +0000 | [diff] [blame] | 28 | var k = fromIndex >= 0 ? fromIndex : $max(0, length + fromIndex); |
Tim van der Lippe | fdbd42e | 2020-04-07 15:14:36 +0100 | [diff] [blame] | 29 | while (k < length) { |
| 30 | if (SameValueZero(searchElement, isString(O) ? $charAt(O, k) : O[k])) { |
| 31 | return true; |
| 32 | } |
| 33 | k += 1; |
| 34 | } |
| 35 | return false; |
| 36 | }; |