Enhance QueryBuilder with generics support for better type inference

Author: alexkart

src/QueryBuilder.php

@@ -14,7 +14,8 @@
 use Spatie\QueryBuilder\Concerns\SortsQuery;
 
 /**
- * @mixin EloquentBuilder
+ * @template TModel of Model
+ * @mixin EloquentBuilder<TModel>
  */
 class QueryBuilder implements ArrayAccess
 {
@@ -49,6 +50,9 @@ public function getSubject(): Relation|EloquentBuilder
         return $this->subject;
     }
 
+    /**
+     * @return static<TModel>
+     */
     public static function for(
         EloquentBuilder|Relation|string $subject,
         ?Request $request = null
@@ -57,7 +61,10 @@ public static function for(
             $subject = $subject::query();
         }
 
-        return new static($subject, $request);
+        /** @var static<TModel> $queryBuilder */
+        $queryBuilder = new static($subject, $request);
+
+        return $queryBuilder;
     }
 
     public function __call($name, $arguments)