1/* 2 * Copyright (c) 2025 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 16class A{ 17 field1:number = 10; 18 foo(){} 19} 20 21class B{ 22 field1:keyof A = "field1"; 23} 24 25interface I{ 26 field1:keyof A; 27} 28 29function main():void{ 30 let x1:B = {field1:"field1"}; 31 let x2:Partial<B> = {field1:"field1"}; 32 let x3:Partial<B> = {field1:"foo"}; 33 let x4:Partial<B> = {}; 34 let x5:Required<B> = {field1:"field1"}; 35 let x6:Required<B> = {field1:"foo"}; 36 let x7:Readonly<B> = {field1:"field1"}; 37 let x8:Readonly<B> = {field1:"foo"}; 38 39 let x9:B = new B(); 40 x9.field1 = "field1"; 41 x9.field1 = "foo" 42 43 let i1:I = {field1:"field1"}; 44 let i2:Partial<I> = {field1:"field1"}; 45 let i3:Partial<I> = {field1:"foo"}; 46 let i4:Partial<I> = {}; 47 let i5:Required<I> = {field1:"field1"}; 48 let i6:Required<I> = {field1:"foo"}; 49 let i7:Readonly<I> = {field1:"field1"}; 50 let i8:Readonly<I> = {field1:"foo"}; 51} 52