TDD cata for roman-numbers, and it's working, at least from 0 til 4999, btw I found out that zero is "nulla" in latin

var romanNumber = require('@vcostin/roman-numbers');
console.log(romanNumber(1999));
//MCMXCIX

I guess I can make this functionality with a callback, but not sure if it's needed

mocha --require blanket -R html-cov > coverage.html

you can look, I don't want to add report to git

I know that are a lot of implementations of this algorithm, this is my TDD Kata, You can use if you like it, but this is just an workout, of course it's well tested ;)