app.js

const express = require('express');
const cors = require('cors');
const bodyParser = require('body-parser');

const app = express();

const environment = require('./config').environment;

app.use(cors());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));

require('./config/passport');

app.use(require('./routes'));

/// catch 404 and forward 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 (environment === 'development') {
  app.use(function(err, req, res, next) {
    console.log(err.stack);

    res.status(err.status || 500);

    res.json({'errors': {
      message: err.message,
      error: err
    }});
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.json({'errors': {
    message: err.message,
    error: {}
  }});
});

// start the server
app.listen(process.env.PORT);