Add performance improvements in serializeFields (#123)

Author: mkszepp

src/Context.php

@@ -337,6 +337,14 @@ public function withInclude(?array $include): static
         return $new;
     }
 
+    public function withFieldAndInclude(Field $field, ?array $include): static
+    {
+        $new = clone $this;
+        $new->field = $field;
+        $new->include = $include;
+        return $new;
+    }
+
     public function resourceMeta($model, array $meta): static
     {
         $this->resourceMeta[$model] = array_merge($this->resourceMeta[$model] ?? [], $meta);

src/Serializer.php

@@ -160,9 +160,10 @@ private function serializeFields(string $key, Context $context): void
                 continue;
             }
 
-            $fieldContext = $context
-                ->withField($field)
-                ->withInclude($context->include[$field->name] ?? null);
+            $fieldContext = $context->withFieldAndInclude(
+                $field,
+                $context->include[$field->name] ?? null,
+            );
 
             if (!$field->isVisible($fieldContext)) {
                 continue;
@@ -215,7 +216,7 @@ private function serializeLinks(string $key, Context $context): void
 
     private function fieldProcessed(string $key, Field $field): bool
     {
-        if (in_array($field, $this->processedFields[$key] ?? [])) {
+        if (in_array($field, $this->processedFields[$key] ?? [], true)) {
             return true;
         }