/// <reference types="node" />
import { EventEmitter } from "events";
export declare class WssClient extends EventEmitter {
    readonly wssUrl: string;
    private _retryTimeout;
    private _connected;
    private _wss;
    constructor(wssUrl: string);
    get isConnected(): boolean;
    connect(): Promise<void>;
    close(): void;
    send(data: string): void;
    private _createConnection;
    private _closeCallback;
    private _retryConnect;
}