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: number; 18 j: string; 19 k: number; 20} 21 22interface I2{ 23 i?: number; 24 j: string; 25 k?: number; 26} 27 28function main() { 29 let x: Required<I> = {i: 1.9, j :"some str", k:10}; 30 assertEQ(x.i, 1.9) 31 assertEQ(x.j, "some str") 32 assertEQ(x.k, 10) 33 34 let x2: Required<I2> = {i: 1.9, j :"some str", k:10}; 35 assertEQ(x2.i, 1.9) 36 assertEQ(x2.j, "some str") 37 assertEQ(x2.k, 10) 38} 39