A country picker with flags, a dial code that cannot be edited away, and as-you-type formatting. The value is E.164 — +32470123456 — or null while empty. Validation rules load per calling code on first interaction, so nothing is downloaded until the user reaches the field, and detail.valid is undefined until they arrive.
Value: null
—Names come from Intl.DisplayNames and are collated in the viewer's language at no download cost. Switch and reopen the picker — the order changes, because an alphabetical list of English names is not alphabetical to a Dutch reader.