pre-turbo-add-more-types.diff

diff --git a/src/Form/AddItemToCartFormType.php b/src/Form/AddItemToCartFormType.php
index 9611bb3..1c131f4 100644
--- a/src/Form/AddItemToCartFormType.php
+++ b/src/Form/AddItemToCartFormType.php
@@ -14,7 +14,7 @@ use Symfony\Component\Routing\RouterInterface;
 
 class AddItemToCartFormType extends AbstractType
 {
-    private $router;
+    private RouterInterface $router;
 
     public function __construct(RouterInterface $router)
     {
diff --git a/src/Repository/ProductRepository.php b/src/Repository/ProductRepository.php
index f9cf337..4937051 100644
--- a/src/Repository/ProductRepository.php
+++ b/src/Repository/ProductRepository.php
@@ -25,7 +25,7 @@ class ProductRepository extends ServiceEntityRepository
      *
      * @return Product[]
      */
-    public function search(?Category $category, ?string $term)
+    public function search(?Category $category, ?string $term): array
     {
         $qb = $this->createQueryBuilder('product');
 
diff --git a/src/Service/CartStorage.php b/src/Service/CartStorage.php
index c1f323a..9dd35cc 100644
--- a/src/Service/CartStorage.php
+++ b/src/Service/CartStorage.php
@@ -11,9 +11,9 @@ use Symfony\Component\HttpFoundation\Session\SessionInterface;
 
 class CartStorage
 {
-    private $requestStack;
-    private $productRepository;
-    private $colorRepository;
+    private RequestStack $requestStack;
+    private ProductRepository $productRepository;
+    private ColorRepository $colorRepository;
 
     public function __construct(RequestStack $requestStack, ProductRepository $productRepository, ColorRepository  $colorRepository)
     {
@@ -54,12 +54,12 @@ class CartStorage
         return $this->getCart() ?: new Cart();
     }
 
-    public function save(Cart $cart)
+    public function save(Cart $cart): void
     {
         $this->getSession()->set(self::getKey(), $cart);
     }
 
-    public function clearCart()
+    public function clearCart(): void
     {
         $this->getSession()->remove(self::getKey());
     }
diff --git a/src/Twig/CartExtension.php b/src/Twig/CartExtension.php
index 7c354eb..66d6af3 100644
--- a/src/Twig/CartExtension.php
+++ b/src/Twig/CartExtension.php
@@ -12,14 +12,14 @@ use Twig\TwigFunction;
 
 class CartExtension extends AbstractExtension
 {
-    private $cartStorage;
+    private CartStorage $cartStorage;
 
     public function __construct(CartStorage $cartStorage)
     {
         $this->cartStorage = $cartStorage;
     }
 
-    public function getFunctions()
+    public function getFunctions(): array
     {
         return [
             new TwigFunction('count_cart_items', [$this, 'countCartItems']),
diff --git a/src/Twig/SerializeExtension.php b/src/Twig/SerializeExtension.php
index c6a1124..7b9980f 100644
--- a/src/Twig/SerializeExtension.php
+++ b/src/Twig/SerializeExtension.php
@@ -8,14 +8,14 @@ use Twig\TwigFilter;
 
 class SerializeExtension extends AbstractExtension
 {
-    private $serializer;
+    private SerializerInterface $serializer;
 
     public function __construct(SerializerInterface $serializer)
     {
         $this->serializer = $serializer;
     }
 
-    public function getFilters()
+    public function getFilters(): array
     {
         return [
             new TwigFilter('serialize', [$this, 'serialize']),