isTab checks existence first, fixes #838

palantir · Mar 17, 2017 · a305643 · a305643
1 parent c79d2be
commit a305643
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/core/src/components/tabs2/tabs2.tsx b/packages/core/src/components/tabs2/tabs2.tsx
@@ -290,5 +290,5 @@ function isEventKeyCode(e: React.KeyboardEvent<HTMLElement>, ...codes: number[])
 }
 
 function isTab(child: React.ReactChild): child is TabElement {
-    return (child as JSX.Element).type === Tab2;
+    return child != null && (child as JSX.Element).type === Tab2;
 }