1/*
2 * Copyright (C) 2022 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17export class PersistentStore {
18  add(key: string, value: string) {
19    localStorage.setItem(key, value);
20  }
21
22  get(key: string): string | undefined {
23    return localStorage.getItem(key) ?? undefined;
24  }
25
26  clear(keySubstring: string) {
27    Object.keys(localStorage).forEach((key) => {
28      if (key.includes(keySubstring)) localStorage.removeItem(key);
29    });
30  }
31}
32