useRoute: change loaderData to be optional

pcattori · pcattori · commit c19b79d0b954 · 2025-10-02T14:53:53.000-04:00
since it could be accessed within an error boundary when the loader itself failed
diff --git a/packages/react-router/lib/hooks.tsx b/packages/react-router/lib/hooks.tsx
@@ -1856,7 +1856,7 @@ type UseRouteResult<Args extends UseRouteArgs> =
 
 type UseRoute<RouteId extends keyof RouteModules | unknown> = {
   loaderData: RouteId extends keyof RouteModules
-    ? GetLoaderData<RouteModules[RouteId]>
+    ? GetLoaderData<RouteModules[RouteId]> | undefined
     : unknown;
   actionData: RouteId extends keyof RouteModules
     ? GetActionData<RouteModules[RouteId]> | undefined
