| /* |
| * Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file |
| * for details. All rights reserved. Use of this source code is governed by a |
| * BSD-style license that can be found in the LICENSE file. |
| */ |
| /** |
| * @assertion It is a compile error if the implicit interface of a class |
| * C includes an instance member m of type F and C declares or inherits a |
| * corresponding instance member m of type F' if F' is not a subtype of F. |
| * @description Checks that it is a compile error if the type F' |
| * of declared instance member m is not a subtype of F. Test type aliases |
| * @compile-error |
| * @author ilya |
| */ |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases |
| abstract class I { |
| foo(var x); |
| } |
| |
| typedef IAlias = I; |
| |
| class C implements IAlias { |
| foo() {} |
| } |
| |
| main () { |
| new C(); |
| } |
