pkg/front_end/testcases/general/issue_48999.dart

// Copyright (c) 2022, 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.

void main() {
  dynamic i = 10;
  print('${i as int?}');
  print('${i is int?}');
}