Language/Interfaces/Superinterfaces/superinterface_of_itself_t04.dart

/*
 * 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-time error if an interface is a superinterface
 * of itself.
 * @description Checks that it is a compile-time error if a non-generic
 * interface is a superinterface of itself. Test type alias
 * @compile-error
 * @author sgrekhov@unipro.ru
 */
// SharedOptions=--enable-experiment=nonfunction-type-aliases

abstract class I implements IAlias {}
typedef IAlias = I;

class A implements I {}

main() {
  try {
    new A();
  } catch (e) {}
}