1/** 2 * Copyright (c) 2024-2025 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 16interface I { 17 i:int; 18 j:string; 19} 20 21interface I2 { 22 readonly i:int; 23 j:string; 24} 25 26function main(){ 27 let partial1:Partial<I> = {i:1234,j:"abcd"}; 28 let partial2:Partial<I> = {a:1234}; 29 let partial3:Partial<I> = {i:"abcd"}; 30 31 let partial4:Partial<I2> = {i:1234,j:"abcd"}; 32 partial4.i = 100; 33} 34 35/* @@? 28:32 Error TypeError: type I$partial has no property named a */ 36/* @@? 29:34 Error TypeError: Type '"abcd"' is not compatible with type 'Int|undefined' at property 'i' */ 37/* @@? 32:14 Error TypeError: Cannot assign to this property because it is readonly. */ 38