Numbers

• Currency is expected to be formatted not based on the currency chosen, but based on the user's locale
• Formatting in JS: Intl.NumberFormat https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl/NumberFormat
• Parsing in JS: not built-in. globalize might be the best option, but it has limited locales: https://github.com/globalizejs/globalize#numberparser-options-