const express = require('express') const next = require('next') const csp = require('./csp') 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() csp(server) server.use(handle) server.listen(port, (err) => { if (err) throw err console.log(`> Ready on http://localhost:${port}`) }) })