lib/create-server.js
function logger(req, res, next) {
  if (req.url.substr(0, 2) === "/r") {
    console.log(req.method, decodeURIComponent(req.url), req.body ? JSON.stringify(req.body) : "");
  }
  next();
}
function logger(req, res, next) {
  if (req.url.substr(0, 2) === "/r") {
    console.log(req.method, decodeURIComponent(req.url), req.body ? JSON.stringify(req.body) : "");
  }
  next();
}
simple logger middleware