// Copyright (c) 2018, 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.

// dart2jsOptions=--strong

import 'package:async_helper/async_helper.dart';
import 'package:expect/expect.dart';
import 'deferred_function_types_lib1.dart' deferred as lib1;
import 'deferred_function_types_lib2.dart' deferred as lib2;

main() {
  asyncTest(() async {
    await lib1.loadLibrary();
    Expect.isTrue(lib1.method3() is Object? Function(Null));
    Expect.isFalse(lib1.method3() is Object? Function(Null, Null));
    await lib2.loadLibrary();
    Expect.isFalse(lib2.method4() is Object? Function(Null));
    Expect.isTrue(lib2.method4() is Object? Function(Null, Null));
  });
}