chore: simplify

Author: zombieJ

src/AjaxUploader.tsx

@@ -81,8 +81,9 @@ class AjaxUploader extends Component<UploadProps> {
     }
 
     if (directory) {
-      files = await traverseFileTree(Array.prototype.slice.call(items), (_file: RcFile) =>
-        this.isNativeDirectory() ? true : attrAccept(_file, this.props.accept),
+      files = await traverseFileTree(
+        Array.prototype.slice.call(items),
+        (_file: RcFile) => this.isNativeDirectory() || attrAccept(_file, this.props.accept),
       );
       this.uploadFiles(files);
     } else {