/*
 * 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 static warning if an instance method m1 overrides an 
 * instance member m2 and m1 does not declare all the named parameters declared 
 * by m2.
 * @description Checks that a compile error is produced if m1 has fewer named
 * parameters than m2 (1 vs. 0) and neither have any required parameters. Test
 * type aliases
 * @compile-error
 * @author sgrekhov@unipro.ru
 */
// SharedOptions=--enable-experiment=nonfunction-type-aliases

class A {
  f({var x}) {}
}
typedef AAlias = A;

class C extends AAlias {
  f() { }
}

main() {
  new A().f(x:1);
  new C().f();
}