pkg/front_end/testcases/patterns/empty_map_pattern.dart

// 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.

method(Map m) => switch (m) {
      {} => 0,
      _ => 1,
    };