Fix internal type error in useRoute types that surfaces when skipLibCheck is disabled (#14577)

Author: pcattori

.changeset/shiny-pans-admire.md

@@ -0,0 +1,5 @@
+---
+"react-router": patch
+---
+
+Fix internal type error in useRoute types that surfaces when skipLibCheck is disabled

packages/react-router/lib/hooks.tsx

@@ -1869,16 +1869,20 @@ type UseRouteResult<Args extends UseRouteArgs> =
   Args extends [infer RouteId extends keyof RouteModules] ? UseRoute<RouteId> | undefined :
   never;
 
+// prettier-ignore
 type UseRoute<RouteId extends keyof RouteModules | unknown> = {
-  handle: RouteId extends keyof RouteModules
-    ? RouteModules[RouteId]["handle"]
-    : unknown;
-  loaderData: RouteId extends keyof RouteModules
-    ? GetLoaderData<RouteModules[RouteId]> | undefined
-    : unknown;
-  actionData: RouteId extends keyof RouteModules
-    ? GetActionData<RouteModules[RouteId]> | undefined
-    : unknown;
+  handle:
+    RouteId extends keyof RouteModules ?
+      RouteModules[RouteId] extends { handle: infer handle } ? handle :
+      unknown
+    :
+    unknown;
+  loaderData:
+    RouteId extends keyof RouteModules ? GetLoaderData<RouteModules[RouteId]> | undefined :
+    unknown;
+  actionData:
+    RouteId extends keyof RouteModules ? GetActionData<RouteModules[RouteId]> | undefined :
+    unknown;
 };
 
 export function useRoute<Args extends UseRouteArgs>(