pkg/front_end/testcases/extension_types/issue55578.dart - sdk - Git at Google

 // 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.

 import 'dart:async';

 extension type E(Future<String> it) implements Future<String> {}

 foo(FutureOr<String> x) {}

 E bar() => throw 0;

 test() => foo(bar()); // Ok.
	// 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.

	import 'dart:async';

	extension type E(Future<String> it) implements Future<String> {}

	foo(FutureOr<String> x) {}

	E bar() => throw 0;

	test() => foo(bar()); // Ok.