Merge pull request #20 from VanOns/bugfix/file-extension-fallback

fix: use fallback if no extension is set

Author: dnwjn

src/DataTransferObjects/Filename.php

@@ -29,7 +29,7 @@ public function __construct(UploadedFile|string $file)
 
         $pathInfo = pathinfo($file);
         $this->name = $this->formatFilename($pathInfo['filename']);
-        $this->extension = $pathInfo['extension'] === '' ? null : $pathInfo['extension'];
+        $this->extension = empty($pathInfo['extension']) ? null : $pathInfo['extension'];
         $this->path = $pathInfo['dirname'] === '.' ? null : $pathInfo['dirname'];
     }