open editors: null guard

microsoft · Jan 23, 2019 · 6d8259c · 6d8259c
1 parent edb64a3
commit 6d8259c
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/src/vs/workbench/parts/files/electron-browser/views/openEditorsView.ts b/src/vs/workbench/parts/files/electron-browser/views/openEditorsView.ts
@@ -609,7 +609,13 @@ class OpenEditorsDragAndDrop implements IListDragAndDrop<OpenEditor | IEditorGro
  }
 
  getDragURI(element: OpenEditor | IEditorGroup): string | null {
- return element instanceof OpenEditor ? element.getResource().toString() : null;
+ if (element instanceof OpenEditor) {
+ const resource = element.getResource();
+ if (resource) {
+ return resource.toString();
+ }
+ }
+ return null;
  }
 
  getDragLabel?(elements: (OpenEditor | IEditorGroup)[]): string {