/**
 * SMI-761: Session Health Monitoring
 * SMI-1189: Refactored to use TypedEventEmitter
 *
 * Provides health monitoring for swarm sessions:
 * - Heartbeat mechanism every 30 seconds
 * - Automatic detection of stuck sessions
 * - Session state recovery capabilities
 * - Metrics for session health
 */
import type { SessionData } from './SessionContext.js';
import { TypedEventEmitter } from './typed-event-emitter.js';
import { type SessionHealth, type SessionHealthStatus, type HealthMonitorConfig, type SessionHealthEvents } from './health-types.js';
export type { SessionHealth, SessionHealthStatus, HealthMonitorConfig, SessionHealthEvents };
/**
 * Session Health Monitor
 *
 * Tracks session health through heartbeats and detects stuck sessions.
 */
export declare class SessionHealthMonitor extends TypedEventEmitter<SessionHealthEvents> {
    private config;
    private sessions;
    private checkInterval;
    private started;
    constructor(config?: HealthMonitorConfig);
    /**
     * Start monitoring a session
     */
    registerSession(session: SessionData): void;
    /**
     * Record a heartbeat for a session
     */
    heartbeat(sessionId: string): void;
    /**
     * Stop monitoring a session
     */
    unregisterSession(sessionId: string): void;
    /**
     * Get health status for a session
     */
    getSessionHealth(sessionId: string): SessionHealth | null;
    /**
     * Get health status for all sessions
     */
    getAllSessionHealth(): SessionHealth[];
    /**
     * Start the health monitor
     */
    start(): void;
    /**
     * Stop the health monitor
     */
    stop(): void;
    /**
     * Check if the monitor is running
     */
    isRunning(): boolean;
    /**
     * Get the number of monitored sessions
     */
    getSessionCount(): number;
    /**
     * Attempt to recover a dead session from stored sessionData
     *
     * @param state - The session health state to recover
     * @returns true if recovery was successful, false otherwise
     */
    private attemptRecovery;
    /**
     * Check all sessions for health issues
     */
    private checkAllSessions;
}
/**
 * Get the default health monitor instance
 */
export declare function getHealthMonitor(): SessionHealthMonitor;
/**
 * Initialize the health monitor with custom config
 */
export declare function initializeHealthMonitor(config?: HealthMonitorConfig): SessionHealthMonitor;
/**
 * Shutdown the health monitor
 */
export declare function shutdownHealthMonitor(): void;
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