1/*
2 * Copyright (c) 2022-2024 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 Mover {
17  move(): void;
18  getStatus(): { speed: number };
19}
20
21interface Shaker {
22  shake(): void;
23  getStatus(): { frequency: number };
24}
25
26interface MoverShaker extends Mover, Shaker {
27  getStatus(): { speed: number; frequency: number };
28}
29
30class C implements MoverShaker {
31  move(): void {
32    console.log("move");
33  }
34
35  shake(): void {
36    console.log("shake");
37  }
38
39  getStatus() {
40    const speed = 100;
41    const frequency = 300;
42    return { speed, frequency };
43  }
44}
45
46const c = new C();
47c.move();
48c.shake();
49
50const st = c.getStatus();
51console.log(st);
52
53const obj: Object = c;
54
55if (obj && obj.move && obj.shake && obj.getStatus) {
56  const moverShaker = obj as MoverShaker;
57
58  console.log(moverShaker);
59}
60