import { Observable, Observer_Interface, Observer_Props, Observer_Type } from "../core/observer";
import { IO_Interface } from "./types";
export interface Json_IO_Props_Interface {
    readPath: string;
    writePath: string;
    simulate: boolean;
    doSubfolders: boolean;
    limit: number;
    useCounter: boolean;
}
export declare class Json_IO<D> implements IO_Interface<D>, Observable<D> {
    private observer_subject;
    private props;
    constructor(props: Json_IO_Props_Interface);
    add_observer(observer: Observer_Interface<D>, id: Observer_Type): void;
    notify_all(props: Observer_Props<D>): void;
    notify(props: Observer_Props<D>): void;
    read(): void;
    write(dao: D): void;
}