/// <reference types="node" />
import { EventEmitter } from "events";
import { ConnectionStatus } from "../enum";
import { ConnectionStateOptions, StateWatcher } from "../types";
import Watcher from "./watcher";
declare interface ConnectionStateWatcher {
    on(event: ConnectionStatus.Connected, listener: () => void): this;
    on(event: ConnectionStatus.Disconnected, listener: () => void): this;
    on(event: ConnectionStatus.Update, listener: (connected: boolean) => void): this;
}
declare class ConnectionStateWatcher extends EventEmitter implements StateWatcher {
    path: string;
    connection: string;
    watcher: Watcher;
    state: string | undefined;
    constructor({ connection, path, onConnected, onDisconnected, onUpdate, }: ConnectionStateOptions);
    private onModified;
    onConnected(callback: () => void): void;
    onDisconnected(callback: () => void): void;
    onUpdate(callback: (connected: boolean) => void): void;
    get connected(): boolean;
}
export default ConnectionStateWatcher;