validateEmail static method

String? validateEmail(
  1. String email
)

Pure — no I/O — so the validators are unit-testable without a prompt. null means proceed, mirroring TermsAcceptance.refusalMessage and LoginCommand.ciRefusalMessage.

Implementation

static String? validateEmail(String email) {
  if (email.isEmpty) return 'Email is required.';
  if (!_emailPattern.hasMatch(email)) {
    return "That doesn't look like a valid email address.";
  }
  return null;
}