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
16function foo(a: boolean | undefined) : int {
17    if (a instanceof Boolean) {
18        if (a == false) {
19            return 0;
20        } else {
21            return 1;
22        }
23    } else {
24    //a is undefined
25        if (a == false) {
26            return 0;
27        } else {
28            return 1;
29        }
30    }
31}
32
33function main() {
34    foo(true);
35    foo(false);
36    foo(undefined);
37}
38
39/* @@? 25:13 Error TypeError: Bad operand type, the types of the operands must be numeric, same enumeration, or boolean type.  */
40