/**
 * Metrics Collection
 *
 * Track operations, execution times, and success/failure rates
 */
/**
 * Operation metrics
 */
export interface OperationMetrics {
    operation: string;
    count: number;
    successCount: number;
    failureCount: number;
    totalDuration: number;
    averageDuration: number;
    minDuration: number;
    maxDuration: number;
    lastExecuted?: Date;
    errors: Array<{
        error: string;
        count: number;
    }>;
}
/**
 * Start timing an operation
 */
export declare function startOperation(operation: string): () => void;
/**
 * Record operation success
 */
export declare function recordSuccess(operation: string, duration?: number): void;
/**
 * Record operation failure
 */
export declare function recordFailure(operation: string, error: string, duration?: number): void;
/**
 * Get metrics for an operation
 */
export declare function getMetrics(operation: string): OperationMetrics | null;
/**
 * Get all metrics
 */
export declare function getAllMetrics(): OperationMetrics[];
/**
 * Reset all metrics
 */
export declare function resetMetrics(): void;
/**
 * Export metrics in Prometheus format
 */
export declare function exportPrometheusMetrics(): string;
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