PhoneInput: full country list + basic E.164 validation #32

PhoneInput: full country list + basic E.164 validation

PhoneInput currently ships 50 countries, so users in most of the world (e.g. Sri Lanka, Nepal, Peru, Morocco, Ukraine) can't select their dial code.

Proposal

1. Full list — all ITU-T E.164 country codes (~245 entries). Flags can be derived from the ISO code rather than stored, and English names via Intl.DisplayNames to keep bundle size down.
2. Optional countries prop — allow consumers to restrict / reorder the list (e.g. ["IN", "US", "GB"]), plus preferredCountries pinned at the top.
3. Basic validation — strip formatting characters, enforce digits-only and E.164 max length (15 digits incl. country code); expose aria-invalid and an onValidityChange(valid, e164) callback. Full per-country rules (libphonenumber) stay out of scope to keep zero extra deps.

Acceptance

• Test that every entry has a valid ISO code and +-prefixed dial code
• Tests for countries filtering and validation callback
• Bundle size noted in the PR