import { PersistentStoreAdapter, Updater } from './types';
export default class FileStoreAdapter implements PersistentStoreAdapter {
    private fileData;
    private mutex;
    constructor(path: string);
    del(key: string): Promise<void>;
    get(key: string): Promise<any>;
    list(): Promise<string[]>;
    set(key: string, value: any): Promise<any>;
    update(key: string, updater: Updater): Promise<any[]>;
}