Nuxt/examples/auth-routes/server.js

const Nuxt = require('nuxt')
const bodyParser = require('body-parser')
const session = require('express-session')
const app = require('express')()

const host = process.env.HOST || '127.0.0.1'
const port = process.env.PORT || '3000'

// Body parser, to access req.body
app.use(bodyParser.json())

// Sessions to create req.session
app.use(session({
  secret: 'super-secret-key',
  resave: false,
  saveUninitialized: false,
  cookie: { maxAge: 60000 }
}))

// POST /api/login to log in the user and add him to the req.session.authUser
app.post('/api/login', function (req, res) {
  if (req.body.username === 'demo' && req.body.password === 'demo') {
    req.session.authUser = { username: 'demo' }
    return res.json({ username: 'demo' })
  }
  res.status(401).json({ message: 'Bad credentials' })
})

// POST /api/logout to log out the user and remove it from the req.session
app.post('/api/logout', function (req, res) {
  delete req.session.authUser
  res.json({ ok: true })
})

// Import and Set Nuxt.js options
let config = require('./nuxt.config.js')
config.dev = !(process.env.NODE_ENV === 'production')

// Init Nuxt.js
new Nuxt(config)
.then((nuxt) => {
  // nuxt middlware
  app.use(nuxt.render)
  // Build only in dev mode
  if (config.dev) {
    nuxt.build()
    .catch((error) => {
      console.error(error) // eslint-disable-line no-console
      process.exit(1)
    })
  }
  // Listen the server
  app.listen(port, host)
  console.log('Server listening on ' + host + ':' + port) // eslint-disable-line no-console
})