fix(react-router): check if strictNullChecks are enabled (#2457)

this flag is required for router typings to work properly. if it is not enabled, strange errors can occur.
TanStack · Oct 3, 2024 · 32ba7ed · 32ba7ed
1 parent 8804d8b
commit 32ba7ed
Showing 1 changed file with 8 additions and 6 deletions.
diff --git a/packages/react-router/src/router.ts b/packages/react-router/src/router.ts
@@ -581,12 +581,14 @@ export function createRouter<
   TDehydrated extends Record<string, any> = Record<string, any>,
   TSerializedError extends Record<string, any> = Record<string, any>,
 >(
-  options: RouterConstructorOptions<
-    TRouteTree,
-    TTrailingSlashOption,
-    TDehydrated,
-    TSerializedError
-  >,
+  options: undefined extends number
+    ? 'strictNullChecks must be enabled in tsconfig.json'
+    : RouterConstructorOptions<
+        TRouteTree,
+        TTrailingSlashOption,
+        TDehydrated,
+        TSerializedError
+      >,
 ) {
   return new Router<
     TRouteTree,