/**
 * 🏥 Health Monitoring Utility
 *
 * Provides health monitoring and early warning system
 * for the audit infrastructure.
 */
export interface HealthMetrics {
    timestamp: number;
    memoryUsage: NodeJS.MemoryUsage;
    cpuUsage: NodeJS.CpuUsage;
    uptime: number;
    processId: number;
    nodeVersion: string;
    platform: string;
}
export interface HealthThresholds {
    maxMemoryMB: number;
    maxCpuPercent: number;
    maxUptimeHours: number;
    minFreeMemoryMB: number;
}
export interface HealthAlert {
    level: 'info' | 'warning' | 'critical';
    metric: string;
    message: string;
    value: number;
    threshold: number;
    timestamp: number;
}
export declare class HealthMonitor {
    private thresholds;
    private alerts;
    private metrics;
    private monitoring;
    private interval?;
    constructor(thresholds?: Partial<HealthThresholds>);
    /**
     * Start continuous health monitoring
     */
    start(intervalMs?: number): void;
    /**
     * Stop health monitoring
     */
    stop(): void;
    /**
     * Perform immediate health check
     */
    checkHealth(): HealthMetrics;
    /**
     * Get current health status
     */
    getHealthStatus(): {
        status: 'healthy' | 'warning' | 'critical';
        metrics: HealthMetrics;
        alerts: HealthAlert[];
        summary: string;
    };
    /**
     * Get performance trends
     */
    getTrends(): {
        memoryTrend: 'stable' | 'increasing' | 'decreasing';
        averageMemoryMB: number;
        peakMemoryMB: number;
        measurementCount: number;
    };
    /**
     * Export health data for analysis
     */
    exportHealthData(): {
        thresholds: HealthThresholds;
        alerts: HealthAlert[];
        metrics: HealthMetrics[];
        trends: {
            memoryTrend: 'stable' | 'increasing' | 'decreasing';
            averageMemoryMB: number;
            peakMemoryMB: number;
            measurementCount: number;
        };
        timestamp: number;
    };
    /**
     * Clear all stored data
     */
    clear(): void;
    private collectMetrics;
    private checkThresholds;
    private addAlert;
}
export declare function getGlobalHealthMonitor(thresholds?: Partial<HealthThresholds>): HealthMonitor;
export declare function startGlobalHealthMonitoring(intervalMs?: number): HealthMonitor;
export declare function stopGlobalHealthMonitoring(): void;
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