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- '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;
- });
-
- // V8 <= 121 and Safari <= 15.4; FF < 23 throws InternalError
- // https://bugs.chromium.org/p/v8/issues/detail?id=12681
- var properErrorOnNonWritableLength = function () {
- try {
- // eslint-disable-next-line es/no-object-defineproperty -- safe
- Object.defineProperty([], 'length', { writable: false }).push();
- } catch (error) {
- return error instanceof TypeError;
- }
- };
-
- var FORCED = INCORRECT_TO_LENGTH || !properErrorOnNonWritableLength();
-
- // `Array.prototype.push` method
- // https://tc39.es/ecma262/#sec-array.prototype.push
- $({ target: 'Array', proto: true, arity: 1, forced: FORCED }, {
- // eslint-disable-next-line no-unused-vars -- required for `.length`
- 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;
- }
- });
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