DefaultMap.d.ts 1.0 KB

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  1. /**
  2. * Copyright 2023 Google LLC.
  3. * Copyright (c) Microsoft Corporation.
  4. *
  5. * Licensed under the Apache License, Version 2.0 (the "License");
  6. * you may not use this file except in compliance with the License.
  7. * You may obtain a copy of the License at
  8. *
  9. * http://www.apache.org/licenses/LICENSE-2.0
  10. *
  11. * Unless required by applicable law or agreed to in writing, software
  12. * distributed under the License is distributed on an "AS IS" BASIS,
  13. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14. * See the License for the specific language governing permissions and
  15. * limitations under the License.
  16. */
  17. /**
  18. * A subclass of Map whose functionality is almost the same as its parent
  19. * except for the fact that DefaultMap never returns undefined. It provides a
  20. * default value for keys that do not exist.
  21. */
  22. export declare class DefaultMap<K, V> extends Map<K, V> {
  23. #private;
  24. constructor(getDefaultValue: (key: K) => V, entries?: readonly (readonly [K, V])[] | null);
  25. get(key: K): V;
  26. }