const http = require('http') const PORT = process.env.PORT || 3000 const server = http.createServer((req, res) => { if (req.url === '/') return respondHello(req, res) res.end() }) function respondHello (req, res) { res.end(JSON.stringify({ msg: 'hello' })) } server.listen(PORT) console.log(`Server listening on port ${PORT}`) if (require.main !== module) module.exports = server