index.js

// super simple express server
'use strict'

const http = require(`http`);
const port = 8080;
const server = http.createServer((req, res) => {
    res.end(`Hello, World!`);
});

server.listen(port, (err) => {
    if (err) return console.log(`Something bad happened: ${err}`);
    console.log(`Node.js server listening on ${port}`);
});

I just needed a super simple express server showcasing GET/POST with ngrok for an arc.js application