Solution to support more than 9 digits

[arafathusayn]

You may use this code snippet to support more than 9 digits:

if (numStr.length > 9) {
  return (
    numWords(numStr.slice(0, numStr.length - 7)) +
    " crore " +
    numWords(numStr.slice(-7))
  );
}

Full code in TS: https://gist.github.com/arafathusayn/082bf05d0d234b9f223241961f3a0685