When using useNumberField, is there any way to get information about the number formatting being used?

[mellis481]

I'm currently POCing the useNumberField hook (documentation) which essentially provides localized number masking. This means:

• for locales like en-US, commas are used as thousand separators and a period is use as the decimal separator.
• for locales like fr-FR, spaces are used as thousand separators and a comma is use as the decimal separator.

I'm wondering if react-spectrum provides access (a helper function) to the localized number formatting it ends up using in useNumberField such that it could be used by consumers to inform users about what characters are allowed.

For instance, if I could tap into a function that would return the following based off the current locale:

{
  thousands: 'comma',
  decimalSeparator: 'period'
}

... then I could include text like the following to further help the user: Your number can be formatted using a comma for the thousands separator and a period for the decimal separator.

[reidbarber]

The Intl.NumberFormat.formatToParts() function may be useful, where you can check the type of a part as "group" or "decimal".