url normalisation middleware

gistfile1.js

var url = require('url');

app.use(function (req, res, next) {
  if (req.path.indexOf('&') > -1) {
    var path = req.path.split('&')[0];
    res.redirect(url.format({
      pathname: path,
      query: req.query
    }));
  } else {
    next();
  }
});