export declare class TimingMiddleware {
    constructor();
    middleWare(): (req: any, res: any, next: () => void) => void;
}
/**
 * Usage :
 *   app.use(timing()); // use: res.startTime('file', 'File IO metric'); ...  res.endTime('file');
 *
 */
export declare const timing: () => (req: any, res: any, next: () => void) => void;