UNPKG

813 BTypeScriptView Raw
1/**
2 * @license
3 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
4 * This code may only be used under the BSD style license found at
5 * http://polymer.github.io/LICENSE.txt
6 * The complete set of authors may be found at
7 * http://polymer.github.io/AUTHORS.txt
8 * The complete set of contributors may be found at
9 * http://polymer.github.io/CONTRIBUTORS.txt
10 * Code distributed by Google as part of the polymer project is also
11 * subject to an additional IP rights grant found at
12 * http://polymer.github.io/PATENTS.txt
13 */
14/**
15 * This is a special map which automatically creates
16 * a default value if the key is not found.
17 */
18export declare class MapWithDefault<K, V> extends Map<K, V> {
19 private readonly makeDefault;
20 constructor(makeDefault: (key: K) => V);
21 get(key: K): V;
22}