| /* |
| * 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 A generic type alias is a declaration [D] of one of the following |
| * forms: |
| * m typedef id<X1extendsB1, ..., Xs extendsBs> = T; |
| * ... |
| * where [m] is derived from metadata, [T] is a type, and [S?] is a type or the |
| * empty string. Let [S0] be [S?] if it is a type, otherwise let [S0] be |
| * [dynamic]. The associated type of [D], call it [F], is, respectively: |
| * T |
| * ... |
| * @description Checks that [T] can be [dynamic], [void], [Null], [FutureOr]. |
| * @author iarkh@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases |
| |
| import "dart:async"; |
| |
| typedef S1<T> = dynamic; |
| typedef S2<T> = Null; |
| typedef S3<T> = void; |
| typedef S4<T> = FutureOr; |
| typedef S5<T> = FutureOr<T>; |
| |
| main() {} |
