import type { EventBus } from '../core/EventBus';
export declare class Connection {
    private bus;
    private ws;
    private ping;
    private retries;
    private url;
    private cfg;
    private dead;
    constructor(bus: EventBus);
    open(url: string, cfg: Record<string, unknown>): void;
    private connect;
    private route;
    send(data: string | ArrayBuffer): void;
    sendJson(obj: Record<string, unknown>): void;
    close(): void;
    private cleanup;
    private clearPing;
    get connected(): boolean;
}