fix property type

Author: daveearley

index.php

@@ -4,7 +4,7 @@
 
 require __DIR__ . '/vendor/autoload.php';
 
-$validator = EmailValidatorFactory::create($_REQUEST['email'] ?: '');
+$validator = EmailValidatorFactory::create($_REQUEST['email'] ?? '');
 
 header('Content-Type: application/json');
 echo $validator->getValidationResults()->asJson();

src/Validations/Validator.php

@@ -5,14 +5,13 @@
 namespace EmailValidation\Validations;
 
 use EmailValidation\EmailAddress;
-use EmailValidation\EmailDataProvider;
 use EmailValidation\EmailDataProviderInterface;
 
 abstract class Validator
 {
     private ?EmailAddress $emailAddress;
 
-    private ?EmailDataProvider $emailDataProvider;
+    private ?EmailDataProviderInterface $emailDataProvider;
 
     public function __construct(EmailAddress $emailAddress = null, EmailDataProviderInterface $emailDataProvider = null)
     {