1/* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 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 */ 15 16// @ts-nocheck 17declare function print(a0:any, a1?:any):string; 18 19class A { 20 x:number; 21 y:number; 22 z:number; 23 constructor() { 24 this.y = 3; 25 this.z = 5; 26 } 27} 28 29let a = new A(); 30for (let key in a) { 31 print(key, a[key]); 32} 33 34// delete local property (hole) 35delete a.x; 36for (let key in a) { 37 print(key, a[key]); 38} 39 40// delete local property (no hole) 41delete a.y; 42for (let key in a) { 43 print(key, a[key]); 44} 45 46// add property 47a.m = 6; 48for (let key in a) { 49 print(key, a[key]); 50} 51 52// change prototype 53Object.defineProperty(A.prototype, "foo", { value: function() {}}) 54for (let key in a) { 55 print(key, a[key]); 56} 57