1/*
2 * Copyright (c) 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 I {
17	readonly a: boolean
18}
19
20class A implements I {
21	a: boolean
22	b : boolean
23	constructor() {
24		this.a = false
25		this.b = false
26	}
27
28	foo() {
29        this.b = true
30    }
31}
32
33class B extends A {
34    constructor() {
35        super()
36        this.a = true
37    }
38}
39
40function main() {
41    let b = new B()
42    assert(b.a)
43}