PWA-1299: [Graphql] Unable to update the items of a bundle-product in a wishlist

* Minor refactor

Author: amolina-adobe

app/code/Magento/WishlistGraphQl/Model/Resolver/UpdateProductsInWishlist.php

@@ -15,6 +15,7 @@
 use Magento\Wishlist\Model\ResourceModel\Wishlist as WishlistResourceModel;
 use Magento\Wishlist\Model\Wishlist;
 use Magento\Wishlist\Model\Wishlist\Config as WishlistConfig;
+use Magento\Wishlist\Model\Wishlist\Data\Error;
 use Magento\Wishlist\Model\Wishlist\Data\WishlistItemFactory;
 use Magento\Wishlist\Model\WishlistFactory;
 use Magento\WishlistGraphQl\Mapper\WishlistDataMapper;
@@ -98,23 +99,24 @@ public function resolve(
         }
 
         $wishlistItems  = $this->getWishlistItems($args['wishlistItems'], $wishlist);
-        $userErrors = [];
 
         foreach ($wishlistItems as $wishlistItem) {
-            $wishlistOutput = $this->updateWishlistItem->execute($wishlistItem, $wishlist);
-            $wishlist = $wishlistOutput->getWishlist();
-
-            foreach ($wishlistOutput->getErrors() as $error) {
-                $userErrors[] = [
-                    'code' => $error->getCode(),
-                    'message' => $error->getMessage()
-                ];
-            }
+            $this->updateWishlistItem->execute($wishlistItem, $wishlist);
         }
 
+        $wishlistOutput = $this->updateWishlistItem->prepareOutput($wishlist);
+
         return [
-            'wishlist' => $this->wishlistDataMapper->map($wishlist),
-            'user_errors' => $userErrors
+            'wishlist' => $this->wishlistDataMapper->map($wishlistOutput->getWishlist()),
+            'user_errors' => array_map(
+                function (Error $error) {
+                    return [
+                        'code' => $error->getCode(),
+                        'message' => $error->getMessage(),
+                    ];
+                },
+                $wishlistOutput->getErrors()
+            )
         ];
     }
 

app/code/Magento/WishlistGraphQl/Model/UpdateWishlistItem.php

@@ -57,7 +57,6 @@ public function __construct(
      * @param WishlistItemData $wishlistItemData
      * @param Wishlist $wishlist
      *
-     * @return WishlistOutput
      * @throws LocalizedException
      * @throws AlreadyExistsException
      */
@@ -85,8 +84,6 @@ public function execute(WishlistItemData $wishlistItemData, Wishlist $wishlist)
 
             $this->wishlistResource->save($wishlist);
         }
-
-        return $this->prepareOutput($wishlist);
     }
 
     /**
@@ -165,7 +162,7 @@ private function addError(string $message, string $code = null): void
      *
      * @return WishlistOutput
      */
-    private function prepareOutput(Wishlist $wishlist): WishlistOutput
+    public function prepareOutput(Wishlist $wishlist): WishlistOutput
     {
         $output = new WishlistOutput($wishlist, $this->errors);
         $this->errors = [];