const port = parseInt(process.env.PORT, 10) || 3000 const dev = process.env.NODE_ENV !== 'production' require('@zeit/next-preact/alias')() const { createServer } = require('http') const { parse } = require('url') const next = require('next') 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(port, (err) => { if (err) throw err console.log(`> Ready on http://localhost:${port}`) }) })