import { Jups } from './jups';
import { Request } from './request';
import { Response } from './response';
import { RouteRegex } from './routes';
export declare type NextCallback = (error?: string | Error) => void;
export interface Middleware extends RouteRegex {
    callback: MiddlewareCallback;
}
export declare type MiddlewareCallback = (req: Request, res: Response, next: NextCallback) => void;
/**
 * This function fetches all of the matching middleware from a `Jups` instance.
 * This will also work with subapps.
 *
 * @param jups The `Jups` instance to check if any of the middleware match.
 * @param req The `Request` object.
 * @param url The URL that the middleware will be matched against.
 */
export declare function fetchMiddleware(jups: Jups, req: Request, url: string): void;
/**
 * This function handles firing all the middleware on the `Request` object.
 * Middleware works with async functions as well as non-async functions.
 *
 * @param req The `Request` object.
 * @param res The `Response` object.
 */
export declare function handleMiddleware(req: Request, res: Response): Promise<void>;