Appended properties can be typed if they're typed in the docstring

Author: ncphillips

src/ModelTransformer.php

@@ -51,7 +51,19 @@ public function transform(ReflectionClass $class, string $name): TransformedType
         }
 
         foreach ($appends as $append) {
-            $typescriptProperties[] = "$append: any";
+            $type = 'any';
+            if ($comment = $class->getDocComment()) {
+                $matches = [];
+                $regex = '/@property\s+([^\s]+)\s+\$' . $append . '\s*\n/';
+
+                preg_match($regex, $comment, $matches);
+
+                if (count($matches) > 1) {
+                    $type = $this->mapCastToType($matches[1]);
+                }
+            }
+
+            $typescriptProperties[] = "$append: $type";
         }
 
         return TransformedType::create(

tests/Feature/TransformEloquentModelsTest.php

@@ -140,14 +140,38 @@
         $table->id();
     });
 
+    /**
+     * @property string $appended_attribute_str
+     * @property int $appended_attribute_int
+     */
     $model = new class extends \Illuminate\Database\Eloquent\Model {
         protected $table = 'test_table';
-        protected $appends = ['appended_attribute'];
+        protected $appends = [
+            'appended_attribute',
+            'appended_attribute_str',
+            'appended_attribute_array',
+            'appended_attribute_int',
+        ];
 
         public function appendedAttribute()
         {
             new Attribute(get: fn() => 'some value');
         }
+
+        public function appendedAttributeStr()
+        {
+            new Attribute(get: fn() => 'some value');
+        }
+
+        public function appendedAttributeArray()
+        {
+            new Attribute(get: fn() => []);
+        }
+
+        public function appendedAttributeInt()
+        {
+            new Attribute(get: fn() => 1);
+        }
     };
 
     $transformer = new ModelTransformer;
@@ -157,6 +181,9 @@ public function appendedAttribute()
         // Numbers
         "id: number\n" .
         "appended_attribute: any\n" .
+        "appended_attribute_str: string\n" .
+        "appended_attribute_array: any\n" .
+        "appended_attribute_int: number\n" .
         '}';
 
     expect($transformedType?->transformed)->toEqual($type_definition);