const fastify = require('fastify') 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(() => { const server = fastify() server.get('/a', (req, res) => { return app.render(req.req, res.res, '/a', req.query) }) server.get('/b', (req, res) => { return app.render(req.req, res.res, '/b', req.query) }) server.get('/*', (req, res) => { return handle(req.req, res.res) }) server.listen(port, (err) => { if (err) throw err console.log(`> Ready on http://localhost:${port}`) }) })