email static method

Validator<String> email([
  1. String? message
])

Implementation

static Validator<String> email([String? message]) {
  final emailRegex = RegExp(r'^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$');
  return (value) => !emailRegex.hasMatch(value)
      ? (message ?? 'Invalid email address')
      : null;
}