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 16import assert = require('assert'); 17 18class Point { 19 x: number; 20 y: number; 21 22 23} 24 25interface Point3d extends Point { 26 z: number; 27} 28 29let point3d: Point3d = {x: 1, y: 2, z: 3}; 30 31assert(point3d.x === 1, 'success'); 32assert(point3d.y === 2, 'success'); 33assert(point3d.z === 3, 'success');