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<T extends "abc"| "ff">(a: T) {
17    let b: "abc"| "ff" = a
18    b = "ff"
19    return b
20}
21
22function main(): void {
23    foo<"abc">("ff");
24}
25
26/* @@? 23:16 Error TypeError: Type '"ff"' is not compatible with type '"abc"' at index 1  */
27/* @@? 23:5 Error TypeError: No matching call signature for foo("ff")  */
28