| 'use strict'; |
| var $ = require('../internals/export'); |
| var toObject = require('../internals/to-object'); |
| var lengthOfArrayLike = require('../internals/length-of-array-like'); |
| var setArrayLength = require('../internals/array-set-length'); |
| var doesNotExceedSafeInteger = require('../internals/does-not-exceed-safe-integer'); |
| var fails = require('../internals/fails'); |
|
|
| var INCORRECT_TO_LENGTH = fails(function () { |
| return [].push.call({ length: 0x100000000 }, 1) !== 4294967297; |
| }); |
|
|
| |
| |
| var properErrorOnNonWritableLength = function () { |
| try { |
| |
| Object.defineProperty([], 'length', { writable: false }).push(); |
| } catch (error) { |
| return error instanceof TypeError; |
| } |
| }; |
|
|
| var FORCED = INCORRECT_TO_LENGTH || !properErrorOnNonWritableLength(); |
|
|
| |
| |
| $({ target: 'Array', proto: true, arity: 1, forced: FORCED }, { |
| |
| push: function push(item) { |
| var O = toObject(this); |
| var len = lengthOfArrayLike(O); |
| var argCount = arguments.length; |
| doesNotExceedSafeInteger(len + argCount); |
| for (var i = 0; i < argCount; i++) { |
| O[len] = arguments[i]; |
| len++; |
| } |
| setArrayLength(O, len); |
| return len; |
| } |
| }); |
|
|