Language/Classes/Instance_Variables/type_aliases_t03.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 Instance variables are variables whose declarations are
 * immediately contained within a class declaration and that are not declared
 * static. The instance variables of a class C are those instance variables
 * declared by C and the instance variables inherited by C from its superclass.
 * @description Checks that class may contain type alias as a member
 * @author sgrekhov@unipro.ru
 */
// SharedOptions=--enable-experiment=nonfunction-type-aliases
import "../../../Utils/expect.dart";
class A {
}

class C extends A {
  AAlias? a;
}
typedef AAlias = A;

main() {
  C c = new C();
  c.a = new AAlias();
  Expect.isNotNull(c.a);
}