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 = (a?: int) => void;
17
18function a(b: lambdaType): void {
19    b();
20    b(10);
21}
22
23function main(): void {
24    let d : lambdaType = (c?: int) => {
25        assert(c == undefined || c == 10);
26    }
27
28    d();
29    d(10);
30    a(d);
31}
32