Backport PR jupyterlab#12521: Handle missing preferredPath from the…

… page config
meeseeksmachine · May 4, 2022 · edb9bf2 · edb9bf2
1 parent 2b1a963
commit edb9bf2
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/packages/filebrowser/src/crumbs.ts b/packages/filebrowser/src/crumbs.ts
@@ -73,8 +73,8 @@ export class BreadCrumbs extends Widget {
     this.addClass(BREADCRUMB_CLASS);
     this._crumbs = Private.createCrumbs();
     this._crumbSeps = Private.createCrumbSeparators();
-    this._hasPreferred =
-      PageConfig.getOption('preferredPath') !== '/' ? true : false;
+    const hasPreferred = PageConfig.getOption('preferredPath');
+    this._hasPreferred = hasPreferred && hasPreferred !== '/' ? true : false;
     if (this._hasPreferred) {
       this.node.appendChild(this._crumbs[Private.Crumb.Preferred]);
     }