pkg/front_end/testcases/regress/invalid_this_reference_06.dart

// Copyright (c) 2024, 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.

extension type Foo(int foo) {
  Foo([foo = foo]) => 42;
  Foo.tester1(String s) : foo = s.length;
  Foo.tester2(this.foo);
}