I think that's a great start and your docs look good too. Unfortunately the native locale format functions are not always accurate for certain currencies and lo

I think that's a great start and your docs look good too. Unfortunately the native locale format functions are not always accurate for certain currencies and locales (e.g. the rupee). My team put together https://osrec.github.io/currencyFormatter.js/ https://osrec.github.io/currencyFormatter.js/ to help format currencies more accurately. You may want to give your users the option to use this library instead of toLocaleString for formatting.