import type { Request, Response, NextFunction } from "express";
declare global {
    namespace Express {
        interface Request {
            user?: any;
        }
    }
}
/**
 * JWT verification middleware
 * Validates JWT token from Authorization header
 */
export declare const jwtVerifier: import("express").RequestHandler<import("express-serve-static-core").ParamsDictionary, any, any, import("qs").ParsedQs, Record<string, any>>;
/**
 * Security headers middleware
 * Adds various security headers to responses
 */
export declare function securityHeaders(_req: Request, res: Response, next: NextFunction): void;
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