export interface Storage {
    getItem(key: string): Promise<string>;

    getJson(key: string): Promise<any>;

    setItem(key: string, value: string): Promise<void>;

    setJson(key: string, value: any): Promise<void>;

    removeItem(key: string): Promise<void>;

    clearAll(): Promise<void>;

    getAllKeys(): Promise<string[]>;

    multiRemove(keys: Array<string>): Promise<void>;
}