import WebSocket from 'ws';
import { Client } from 'ts-nats';
export declare class BackendSession {
    readonly id: string;
    readonly host: string;
    readonly ws: WebSocket;
    readonly nc: Client;
    readonly backendId: string;
    onDestroy?: () => void;
    private _started;
    private _stopped;
    private _discoverSubscription;
    private _wkSubscription;
    private _connectSubscription;
    private _connections;
    private _logger;
    private _wkRequests;
    constructor(ws: WebSocket, host: string, nc: Client, backendId: string);
    start(): Promise<void>;
    private _onBackendClosed;
    private _onBackendMessage;
    private _onNewConnection;
    destroy(): void;
}