email static method

String? email(
  1. String? value
)

Implementation

static String? email(String? value) {
  if (value == null || value.trim().isEmpty) return 'Email is required.';
  final regex = RegExp(r'^[\w.+-]+@[\w-]+\.[a-zA-Z]{2,}$');
  if (!regex.hasMatch(value.trim())) return 'Enter a valid email address.';
  return null;
}