Fix Breadcrumb validation

microsoft · Apr 25, 2018 · 45c7a49 · 45c7a49
1 parent 6308b5d
commit 45c7a49
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/packages/office-ui-fabric-react/src/components/Breadcrumb/Breadcrumb.base.tsx b/packages/office-ui-fabric-react/src/components/Breadcrumb/Breadcrumb.base.tsx
@@ -203,8 +203,10 @@ export class Breadcrumb extends BaseComponent<IBreadcrumbProps, any> {
    * @param props Props to validate
    */
   private _validateProps(props: IBreadcrumbProps): void {
-    const { items, overflowIndex } = props;
-    if (overflowIndex! < 0 || overflowIndex! > items.length) {
+    const { maxDisplayedItems, overflowIndex, items } = props;
+    if (overflowIndex! < 0 ||
+      maxDisplayedItems! > 1 && overflowIndex! > maxDisplayedItems! - 1 ||
+      items.length > 0 && overflowIndex! > items.length - 1) {
       throw new Error('Breadcrumb: overflowIndex out of range');
     }
   }