How to use the fetchr.middleware function in fetchr

export default function bootServices(app) {

  const user = getUserServices(app);

  Fetchr.registerFetcher(user);

  const middleware = Fetchr.middleware();
  app.use('/external/services', middleware);
  app.use('/internal/services', middleware);
}

export default function bootServices(app) {
  const hikesService = getHikesService(app);
  Fetchr.registerFetcher(hikesService);
  app.use('/services', Fetchr.middleware());
}

return (req: any, res: any, next: Function) => {
    res.startTime("apigateway", "API Gateway");
    return Fetchr.middleware({
      responseFormatter: (
        req: Request,
        res: Response & { endTime: Function },
        data: any,
      ) => {
        res.endTime("apigateway");
        return data;
      },
    })(req, res, next);
  };
}

getMiddleware: function (options) {
            return Fetchr.middleware(options);
        },
        /**