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