1/*
2 * Copyright (c) 2022-2024 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
16
17interface k {
18    a: number,
19}
20
21interface b extends k {
22    a: number,
23}
24
25interface c {
26    a: number | string;
27}
28
29var a: c;
30var a: b;
31
32/* @@? 30:5 Error TypeError: Subsequent variable declaration must have the same type. Variable 'a' must be of type 'c', but here has type 'b'.  */
33