email static method

String Function(String?) email([
  1. String? message
])

Implementation

static String Function(String?) email([String? message]) {
  return (String? value) {
    if (value?.isEmpty ?? true) return '';
    final emailRegex = RegExp(r'^[^@]+@[^@]+\.[^@]+$');
    return emailRegex.hasMatch(value!) ? '' : message ?? 'Please enter a valid email address';
  };
}