#!/usr/bin/env node const http = require('http'); const port = process.argv[2]; console.log(`DEBUG testing debug log`) console.log(`WARN testing warn log`) console.log(`testing info log`) const server = http.createServer(() => {}); server.listen(port, (err) => { if (err) { return console.log('something bad happened', err) } console.log(`server is listening on ${port}`) });