import { NextFunction, Request, Response } from 'express';
export declare type Middleware = (req: Request, res: Response, next: NextFunction) => void;
export declare type Callback = (err: Error, css: string, js: string) => void;
export declare const stylus: {
    getMiddleware(options: {
        dest: string;
        src: string;
    }): Middleware;
    getWidgetCSS(str: string, callback: Callback): void;
};