code: function logRequest(err, res) {
      if (res) {
        let ms = new Date() - res.requestStartTime;
  
        var time = ms < 1000 ? `${ms}ms` : `${(ms/1000).toFixed(2)}s`;
  
        logRoute(`${res.req.method} ${res.statusCode} (${time}): ${res.req.originalUrl}`);
      }
    }
docs: Log the request time when finished
  
  @param {null|Error} err - Request error if there was one
  @param {Request} req - Request Object