rubyr

function toRoman(num) {
  if (num === 0) return "";
  let numerals = {
    M: 1000,
    CM: 900, D: 500, CD: 400, C: 100,
    XC: 90, L: 50, XL: 40, X: 10,
    IX: 9, V: 5, IV: 4, I: 1,
  };
  
  for (const [key, value] of Object.entries(numerals))