Fix potentially unsafe cast

microsoft · May 5, 2021 · 6367aae · 6367aae
1 parent 13d81db
commit 6367aae
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/vs/workbench/contrib/notebook/browser/view/renderers/webviewPreloads.ts b/src/vs/workbench/contrib/notebook/browser/view/renderers/webviewPreloads.ts
@@ -894,7 +894,10 @@ async function webviewPreloads(markdownRendererModule: any, markdownDeps: any) {
  }
 
  const previewRoot = previewContainerNode.shadowRoot;
- const previewNode = previewRoot?.getElementById('preview') as HTMLElement;
+ const previewNode = previewRoot?.getElementById('preview');
+ if (!previewNode) {
+ return;
+ }
 
  // TODO: handle namespace
  if (typeof content === 'string') {