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
16type lambdaType = (alma?: int) => void;
17
18class Klass {
19    private variable: lambdaType;
20
21    constructor(variable: lambdaType) {
22        this.variable = variable;
23    }
24
25    public doIt(): void {
26        this.variable();
27        this.variable(10);
28    }
29}
30
31function main(): void {
32    let foo = (a?: int) => {
33        assert(a == undefined || a == 10);
34    }
35
36    let c = new Klass(foo);
37    c.doIt();
38}
39