const { createServer } = require('http') const { parse } = require('url') const next = require('next') const port = parseInt(process.env.PORT, 10) || 3000 const dev = process.env.NODE_ENV !== 'production' const app = next({ dev }) const handle = app.getRequestHandler() app.prepare() .then(() => { createServer((req, res) => handle(req, res, parse(req.url, true).pathname)) .listen(port, (err) => { if (err) throw err console.log(`> Ready on http://localhost:${port}`) }) })