Basic-App.js

//TO INSTALL: npm install express cors body-parser morgan monk
const http    = require('http')
const express   = require('express')
const bodyParser = require('body-parser')
const morgan   = require('morgan')
const cors    = require('cors')
const app     = module.exports = express()
const server   = http.createServer(app)
const port    = parseInt(process.env.PORT || 3000)
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({ extended: false }))
app.use(morgan('dev'))
app.use(cors({origin: true}))
// ADD (MOUNT) YOUR MIDDLEWARE (ROUTES) HERE
// ^^^ Example: app.use('/v1/kitten', require('./routes/kitten'))
app.use(require('./routes/users'))
app.use(notFound)
app.use(errorHandler)
server.listen(port)
 .on('error', console.error.bind(console))
 .on('listening', console.log.bind(console, 'Listening on ' + port));
function notFound(req, res, next) {
 res.status(404)
  .send({error: 'Url not found', status: 404, url: req.url})
}
function errorHandler(err, req, res, next) {
 console.error('ERROR', err)
 res.status(500)
  .send({error: err, url: req.url, status: 500})
}