international<E> static method
Validates that the phone number is in E.164 international format.
E.164 format: +subscriber number
Example: +14155552671
PhoneRules.international(error: 'Invalid phone number')
Implementation
static Rule<String, E> international<E>({required E error}) => PredicateRule(
predicate: (value) => _e164Regex.hasMatch(value.replaceAll(' ', '')),
error: error,
);