export declare const WS_HEARTBEAT_INTERVAL_MS = 30000;
export declare const WS_HEARTBEAT_PROBE_TIMEOUT_MS = 5000;
export declare const WS_HEARTBEAT_MISSES_BEFORE_DISCONNECT = 2;
interface HeartbeatSocket {
    ping(): void;
    terminate(): void;
    on(event: "pong", listener: () => void): unknown;
    off(event: "pong", listener: () => void): unknown;
    readyState?: number;
}
export interface WsHeartbeatHandle {
    stop(): void;
}
export interface WsHeartbeatOptions {
    intervalMs?: number;
    probeTimeoutMs?: number;
    missesBeforeDisconnect?: number;
    onDead?: () => void;
    onPingError?: (error: Error) => void;
}
export declare function startWsHeartbeat(ws: HeartbeatSocket, options?: WsHeartbeatOptions): WsHeartbeatHandle;
export {};
//# sourceMappingURL=ws-heartbeat.d.ts.map