So what you just demonstrated is exactly what I'm proposing is anti-user. Either we provide `intlNumber` for the user and make it something useful, or we don't expose it at all and tell the user to do everything through `intl`. It seems strange to me that we create an `intlNumber` helper yet tell the user "no you can't use it in obvious ways, since we've restricted its API for arbitrary philosophical reasons".

Either make `intNumber` useful to real users or throw it away.