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