import { RequestHandler } from 'express';
import { Type } from '@neoskop/annotation-factory';
import { Provider } from '@neoskop/injector';
/**
 * Provide a middleware for a controller
 *
 * @example
 * ```
 *
 * @Controller({
 *   providers: [
 *      middleware(ExampleMiddleware)
 *   ]
 * })
 * export class ExampleController {}
 * ```
 */
export declare function middleware(middleware: Type<any> | RequestHandler, placement?: 'before' | 'after'): Provider;