1/* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16interface IStorage { 17 get<T>(key: string, areaMode?: number): T | undefined; 18 set<T>(key: string, val: T, areaMode?: number): void; 19 has<T>(key: string, areaMode?: number): boolean; 20 clear(): void; 21 delete(key: string, areaMode?: number): void; 22} 23