1// Copyright JS Foundation and other contributors, http://js.foundation 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15Object.defineProperty(Object.prototype, 0, {'get': function() { throw $ }}); 16/** 17 * The below line is added becase the patch #2526 introduces internal properties for promises. 18 * The Reference Error this issue produced can still be reproduced by calling this line. 19 * The reason it was present before is that Promise's 0th property was Promise which could be modified 20 * with the above line, and the engine getting that property for internal purposes got the `throw $` instead. 21 * Thanks to internal properties, it can't be modified anymore from JS side, therefore Promise won't trigger the error. 22 * To keep this issue's output as it was before, the `Array.prototype[0];` line is added. 23 */ 24Array.prototype[0]; 25Promise.all(); 26