import { class_Dfr, type Constructor } from 'atma-utils';
export declare class JsonStoreFs<T> {
    path: string;
    Type?: Constructor;
    mapFn?: (x: T) => any;
    format?: boolean;
    $default?: T;
    serializeFn?: (x: T) => any;
    persistence: 'file' | 'localStorage';
    errored: Error;
    private listeners;
    private version;
    private data;
    private pending;
    private busy;
    private watcherFn;
    private watching;
    private transport;
    lock: class_Dfr<any>;
    constructor(path: string, Type?: Constructor, mapFn?: (x: T) => any, format?: boolean, $default?: T, serializeFn?: (x: T) => any, persistence?: 'file' | 'localStorage');
    watch(cb: typeof this.watcherFn): void;
    unwatch(): void;
    cleanCache(): void;
    delete(): Promise<void>;
    write(arr: T): class_Dfr<any>;
    read(): Promise<T>;
    private readInner;
    private writeInner;
    private callWriteListeners;
    private decode;
    private encode;
}