import { PerformanceMetrics } from './interfaces';
/**
 * Enhanced performance monitoring utility with granular tracking
 */
export declare class PerformanceMonitor {
    private startTime;
    private executionTimes;
    private errorCount;
    private totalExecutions;
    private ruleExecutionTimes;
    private throughputHistory;
    private lastGcCheck;
    private gcPressure;
    start(): void;
    end(): void;
    /**
     * Record execution time for a specific rule
     */
    recordRuleExecution(ruleName: string, executionTime: number, success: boolean): void;
    getAverageExecutionTime(): number;
    getErrorRate(): number;
    /**
     * Calculate percentile from execution times
     */
    private calculatePercentile;
    /**
     * Get 95th percentile execution time
     */
    getPercentile95(): number;
    /**
     * Get 99th percentile execution time
     */
    getPercentile99(): number;
    /**
     * Get current throughput (validations per second)
     */
    getThroughput(): number;
    /**
     * Update throughput calculation
     */
    private updateThroughput;
    getMemoryUsage(): number;
    /**
     * Estimate CPU usage based on execution patterns
     */
    getCpuUsage(): number;
    /**
     * Estimate garbage collection pressure
     */
    getGcPressure(): number;
    recordError(): void;
    /**
     * Get detailed breakdown of rule performance
     */
    getRuleBreakdown(): Array<{
        ruleName: string;
        executionTime: number;
        success: boolean;
    }>;
    calculateMetrics(startTime: number, rulesExecuted: number, ruleBreakdown?: Array<{
        ruleName: string;
        executionTime: number;
        success: boolean;
    }>): PerformanceMetrics;
}
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