index.js

var config      = require('./config.json');
var bodyParser  = require('body-parser');
var express     = require('express');
var logger      = require('morgan');
var app         = express();
var routes      = require('./routes');

app.set('port', (process.env.PORT || config.port));

app.enable('verbose errors');

app.use(logger('dev'));
app.use(bodyParser.json());
app.use(routes);

app.use('*',function (req, res, next) {
  if (req.url === '/favicon.ico') {
    // Short-circuit favicon requests
    res.set({'Content-Type': 'image/x-icon'});
    res.status(200);
    res.end();
    next();
  } else {
    // Reroute all 404 routes to the 404 handler
    var err = new Error();
    err.status = 404;
    next(err);
  }

  return;
});

// 404 handler middleware, respond with JSON only
app.use(function (err, req, res, next) {
  if (err.status !== 404) {
    return next(err);
  }

  res.status(404);
  res.send({
    status: 404,
    error: err.message || 'no snakes here'
  });

  return;
});

// 500 handler middleware, respond with JSON only
app.use(function (err, req, res, next) {
  var statusCode = err.status || 500;

  res.status(statusCode);
  res.send({
    status: statusCode,
    error: err
  });

  return;
});

var server = app.listen(app.get('port'), function () {
  console.log('Server listening at http://%s:%s', config.host, app.get('port'));
});