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1/*
2 * Copyright (c) 2025 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
16class A{
17  field1:number = 10;
18  private field2:number = 20;
19  foo(){}
20}
21
22function foo(c: (keyof A)|"abcd"|A|undefined): string {
23  if (c instanceof (keyof A))  {
24    assertEQ(c, "field1")
25    return "Case 1";
26  } else if (c instanceof "abcd") {
27    assertEQ(c, "abcd")
28    return "Case 2";
29  } else if (c instanceof A) {
30    assertEQ(c.field1, 0)
31    return "Case 3";
32  } else {
33    return "Case 4";
34  }
35}
36
37function main(): void {
38  /* @@ label1 */foo(/* @@ label2 */"field2");
39  /* @@ label3 */foo(/* @@ label4 */"other field");
40}
41
42
43/* @@@ label1 Error TypeError: No matching call signature for foo("field2")  */
44/* @@@ label2 Error TypeError: Type '"field2"' is not compatible with type '"abcd"|A|undefined|"foo"|"field1"' at index 1  */
45/* @@@ label3 Error TypeError: No matching call signature for foo("other field")  */
46/* @@@ label4 Error TypeError: Type '"other field"' is not compatible with type '"abcd"|A|undefined|"foo"|"field1"' at index 1  */
47