/*
 * 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 the implements clause of a class
 * C specifies a type T as a superinterface more than once.
 * @description Checks that it is a compile-time error if the same type appears
 * more than once in the implements clause. Test type aliases
 * @compile-error
 * @Issue 45526
 * @author sgrekhov@unipro.ru
 */
// SharedOptions=--enable-experiment=nonfunction-type-aliases
abstract class I {}
abstract class J {}

typedef IAlias = I;

class A implements I, J, IAlias {}

main() {
  new A();
}