Output to the terminal an underground-like message!

Lidia.js

#!/usr/bin/env node
const msg = process.argv.slice(2).join(' ').toUpperCase().concat(' '.repeat(20))

let index = -1

setInterval(() => {
  index++
  process.stdout.write(msg.slice(index).concat(msg.slice(0, index)))
  process.stdout.cursorTo(0)
  index >= msg.length - 1 && (index = -1)
}, 300)