export declare type StoreType = 'localstore' | 'sessionstore' | 'memory';
export interface Store<T = any> {
    keys?(): Promise<IterableIterator<string>> | IterableIterator<string>;
    get(key: string): Promise<T | undefined | null> | T | undefined | null;
    delete(key: string): Promise<boolean> | boolean;
    set(key: string, value: T): Promise<this> | this;
}