import { Events } from '../../shared/utils';
import { SocketWrapper } from './socket';
export declare class HeartbeatManager extends Events {
    private pingInterval;
    private pingTimeout;
    private intervalId;
    private timeouts;
    constructor(pingInterval?: number, pingTimeout?: number);
    start(sockets: Map<string, SocketWrapper>): void;
    stop(): void;
    handlePing(socketId: string, socket: SocketWrapper): void;
    handlePong(socketId: string): void;
    private performPingCheck;
}