/**
 * Performance Optimizer for n8n-nodes-bitrix24
 * This file provides utilities to monitor and improve performance
 */
export declare class PerformanceMonitor {
    private static metrics;
    private static cacheHits;
    private static cacheMisses;
    /**
     * Start timing an operation
     */
    static startTimer(operation: string): () => void;
    /**
     * Record performance metric
     */
    private static recordMetric;
    /**
     * Record cache hit
     */
    static recordCacheHit(): void;
    /**
     * Record cache miss
     */
    static recordCacheMiss(): void;
    /**
     * Get performance statistics
     */
    static getStats(): {
        operations: Map<string, {
            count: number;
            totalTime: number;
            avgTime: number;
        }>;
        cacheHitRate: number;
        totalCacheHits: number;
        totalCacheMisses: number;
    };
    /**
     * Reset all metrics
     */
    static reset(): void;
}
export declare class SmartCache<T> {
    private cache;
    private maxSize;
    private ttl;
    constructor(maxSize?: number, ttl?: number);
    /**
     * Get item from cache
     */
    get(key: string): T | null;
    /**
     * Set item in cache
     */
    set(key: string, data: T): void;
    /**
     * Evict least used items when cache is full
     */
    private evictLeastUsed;
    /**
     * Clear expired items
     */
    clearExpired(): void;
    /**
     * Get cache statistics
     */
    getStats(): {
        size: number;
        maxSize: number;
        ttl: number;
    };
    /**
     * Clear all cache
     */
    clear(): void;
}
export declare class Debouncer {
    private timers;
    /**
     * Debounce a function call
     */
    debounce<T extends (...args: any[]) => any>(key: string, func: T, delay: number): (...args: Parameters<T>) => void;
    /**
     * Cancel a debounced function
     */
    cancel(key: string): void;
    /**
     * Clear all timers
     */
    clear(): void;
}
export declare class PerformanceOptimizer {
    /**
     * Get optimization recommendations based on current metrics
     */
    static getRecommendations(): string[];
    /**
     * Generate performance report
     */
    static generateReport(): string;
}
export declare const performanceMonitor: PerformanceMonitor;
export declare const smartCache: SmartCache<unknown>;
export declare const debouncer: Debouncer;
export declare const performanceOptimizer: PerformanceOptimizer;