EmailValidator class

A validator that checks whether a given string is a valid email address.

The EmailValidator ensures that the input follows the basic structure of an email address, including a local part, the @ symbol, and a domain.

Email validation rules:

• The email must contain exactly one @ symbol.
• The local part can include letters, numbers, and special characters.
• The domain must contain at least one dot (.).
• Consecutive dots (..) are not allowed.

Example

final validator = EmailValidator(message: 'Invalid email');

print(validator.validate('user@example.com'));  // null (valid)
print(validator.validate('user@sub.domain.com'));  // null (valid)
print(validator.validate('invalid-email'));  // 'Invalid email' (invalid)
print(validator.validate('user@domain'));  // 'Invalid email' (invalid)
print(validator.validate('user@domain..com'));  // 'Invalid email' (invalid)