import { EventEmitter } from 'events';
import { GreprApiClient } from './api-client.js';
/**
 * Manages heartbeat messages to keep sync jobs alive
 */
export declare class HeartbeatManager extends EventEmitter {
    private apiClient;
    private isActive;
    private maxRetries;
    private retryAttempts;
    constructor(apiClient: GreprApiClient, maxRetries?: number);
    start(): void;
    stop(): void;
    handleHeartbeatRequest(token: string): Promise<void>;
    private handleRetry;
}
//# sourceMappingURL=heartbeat.d.ts.map