Boilerplate Node.js Express REST JSON API Server

// app.js

/* in console run thus:
PORT=8009 node app.js
*/

const express = require('express')
const PORT = process.env.PORT || 8008

const startExpress = async () => {
    const app = express()
    app.use(express.json())

    app.get('/', (req, res) => {
        res.json(
            {
                'message': 'ok',
                'routes': [
                    '/',
                ]
            }
        )
    })
    return app.listen(PORT, () => {
        console.log({'process.env': process.env})
        console.log(`App listening at https://SERVER:${PORT}`)
    })
}

;(async () => {
    await startExpress()
})()