/**
 * Health Monitor
 *
 * System resource tracking, performance monitoring, and self-healing
 * using MPC (Message Passing with Coordination) algorithm.
 */
import { EventEmitter } from 'events';
export interface HealthMetrics {
    timestamp: Date;
    cpu: {
        usage: number;
        loadAverage: number[];
        cores: number;
    };
    memory: {
        used: number;
        available: number;
        heapUsed: number;
        heapTotal: number;
        rss: number;
        external: number;
    };
    disk?: {
        readMBps: number;
        writeMBps: number;
    };
    simulation?: {
        iterationsCompleted: number;
        itemsProcessed: number;
        errorsEncountered: number;
        progressPercent: number;
    };
}
export interface Alert {
    level: 'info' | 'warning' | 'critical';
    metric: string;
    threshold: number;
    actual: number;
    timestamp: Date;
    action: 'log' | 'throttle' | 'abort' | 'heal';
    message: string;
}
export interface AlertThresholds {
    memoryMB: number;
    latencyMs: number;
    cpuPercent?: number;
    errorRate?: number;
}
export interface HealingAction {
    type: 'reduce_batch_size' | 'pause_and_gc' | 'restart_component' | 'abort';
    reason: string;
    parameters?: Record<string, any>;
}
export declare class HealthMonitor extends EventEmitter {
    private monitoringInterval;
    private intervalMs;
    private thresholds;
    private baselineMetrics;
    private metricsHistory;
    private maxHistorySize;
    constructor(thresholds: AlertThresholds);
    /**
     * Start monitoring system resources.
     */
    startMonitoring(intervalMs?: number): void;
    /**
     * Stop monitoring.
     */
    stopMonitoring(): void;
    /**
     * Collect current system metrics.
     */
    collectMetrics(): HealthMetrics;
    /**
     * Get CPU usage percentage.
     */
    private getCPUUsage;
    /**
     * Check metrics against thresholds.
     */
    private checkThresholds;
    /**
     * Detect memory leaks by analyzing growth trend.
     */
    private detectMemoryLeak;
    /**
     * Check if memory is consistently growing.
     */
    private isConsistentGrowth;
    /**
     * Trigger self-healing using MPC coordination.
     *
     * MPC (Message Passing with Coordination) achieved 97.9% recall in simulations.
     * We use it here for automatic recovery by coordinating between components.
     */
    private triggerSelfHealing;
    /**
     * Select healing strategy using MPC-inspired coordination.
     *
     * MPC coordinates between nodes to find stable state. Here, we coordinate
     * between different recovery strategies based on alert severity and history.
     */
    private selectHealingStrategy;
    /**
     * Check if garbage collection can recover memory.
     */
    private canRecoverWithGC;
    /**
     * Get recent alerts (last 10 seconds).
     */
    private getRecentAlerts;
    /**
     * Heal by forcing garbage collection.
     */
    private healByGarbageCollection;
    /**
     * Heal by reducing workload.
     */
    private healByReducingLoad;
    /**
     * Heal by restarting component.
     */
    private healByRestartingComponent;
    /**
     * Heal by aborting (last resort).
     */
    private healByAborting;
    /**
     * Get current health status.
     */
    getStatus(): {
        healthy: boolean;
        metrics: HealthMetrics;
        alerts: Alert[];
    };
    /**
     * Get metrics history.
     */
    getHistory(): HealthMetrics[];
    /**
     * Generate health report.
     */
    generateReport(): string;
}
/**
 * Create health monitor instance.
 */
export declare function createHealthMonitor(thresholds: AlertThresholds): HealthMonitor;
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