index.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var app = express();
app.listen(process.env.PORT || 3000);

app.use(bodyParser.json());
app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')))
app.use(bodyParser.urlencoded({ extended : false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));


/// catch 404 and forwarding to error handler
app.use(function(req, res, next) {
	var err = new Error('Not Found');
	err.status = 404;
	next(err);
});

/// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
	app.use(function(err, req, res, next) {
		res.status(err.status || 500).json('error', {
				message: err.message,
				error: err
			});
	});
} else {
	// production error handler
	// no stacktraces leaked to user
	app.use(function(err, req, res, next) {
		res.status(err.status || 500)
			.json('error', {
				message: err.message,
				error: {}
			});
	});
}

module.exports = app;