import type { Request, Response, NextFunction } from 'express';
/**
 * @typedef {Function} ExpressMiddleware
 * @description This middleware logs information about the incoming request.
 * @param {Request} req - The Express request object.
 * @param {Response} res - The Express response object.
 * @param {NextFunction} next - The next middleware function in the stack.
 * @returns {T}
 */
export type ExpressMiddleware<T> = (req: Request, res: Response, next: NextFunction) => T;
/**
 * Returns a randomly generated string, utilised for producing secret used for
 * singing session cookie.
 *
 * @returns {string}
 */
export declare const randomString: () => string;
/**
 * Returns the complete URL including host and any query parameters corresponding
 * to the provided request instance.
 *
 * @param {Request} req
 * @returns {URL}
 */
export declare const getRequestURL: (req: Request) => URL;