import { Request, Response } from 'express';
import { ClientInfo } from '../types/client-info';
/**
 * Extract request metadata for logging
 */
export declare function getRequestMetadata(req: Request): {
    headers: import("http").IncomingHttpHeaders;
    url: string;
    method: string;
    query: import("qs").ParsedQs;
    timestamp: string;
};
/**
 * Send standardized HTTP response
 */
export declare function sendResponse(res: Response, status: number, data: any, clientInfo?: ClientInfo): void;
/**
 * Send success response (200)
 */
export declare function sendSuccessResponse(res: Response, data: any, clientInfo?: ClientInfo): void;
/**
 * Send error response
 */
export declare function sendErrorResponse(res: Response, status: number, error: string, clientInfo?: ClientInfo): void;
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