text: var serverSettings = require("../settings/");
  
  module.exports = function(err, req, res, next) {
  
    if (!err) {
  
      // This should never happen
      return next ? next() : null;
  
    }
  
    res.status(500);
  
    if (err.code === "LIMIT_FILE_SIZE") {
      res.send("Sorry, uploads are limited to " + prettySize(serverSettings.maxUploadSize) + ". Try clipping your file or converting it to an MP3.");
    } else {
      res.send("Unknown error.");
      throw err;
    }
  
  };
  
  function prettySize(size) {
  
    var mb = size / 1000000,
        rounded = mb >= 1 ? Math.floor(10 * mb) / 10 : Math.floor(100 * mb) / 100;
  
    return rounded + " MB";
  
  }
  