refactor(mapper): improve property and enum handling (#1773)

Author: xHeaven

packages/mapper/src/Casters/EnumCaster.php

@@ -30,6 +30,10 @@ public function cast(mixed $input): ?object
             return constant("{$this->enum}::{$input}");
         }
 
+        if (! is_a($this->enum, \BackedEnum::class, allow_string: true)) {
+            return null;
+        }
+
         return forward_static_call("{$this->enum}::from", $input);
     }
 }

packages/mapper/src/Mappers/ObjectToArrayMapper.php

@@ -49,6 +49,10 @@ public function map(mixed $from, mixed $to): mixed
 
     private function resolvePropertyValue(PropertyReflector $property, object $object): mixed
     {
+        if (! $property->isInitialized($object)) {
+            return null;
+        }
+
         $propertyValue = $property->getValue($object);
 
         if ($property->getIterableType()?->isClass()) {