required static method

PhoneNumberInputValidator required({
  1. String? errorText,
})

Implementation

static PhoneNumberInputValidator required({
  /// custom error message
  String? errorText,
}) {
  return (PhoneNumber? valueCandidate) {
    if (valueCandidate == null || (valueCandidate.nsn.trim().isEmpty)) {
      return errorText ?? 'requiredPhoneNumber';
    }
    return null;
  };
}