| // Copyright (c) 2023, 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. | |
| typedef F1<X> = List<G1<X>>; | |
| typedef G1<Y> = F1<Y>; | |
| typedef F2 = void Function<X extends F2>(); | |
| typedef F3 = F3; | |
| typedef F4 = List<F4>; | |
| typedef F5<X extends F5<Never>> = Object; |