const { createServer } = require('http'); const { parse } = require('url'); const next = require('next'); const port = parseInt(process.env.PORT || '3000', 10); 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(port, '127.1.4.78'); console.log( `> Server listening at http://localhost:${port} as ${ dev ? 'development' : process.env.NODE_ENV }` ); });