diff --git a/examples/fastapi-vite/frontend/src/lib/utils.ts b/examples/fastapi-vite/frontend/src/lib/utils.ts
new file mode 100644
index 00000000..a5ef1935
--- /dev/null
+++ b/examples/fastapi-vite/frontend/src/lib/utils.ts
@@ -0,0 +1,6 @@
+import { clsx, type ClassValue } from "clsx";
+import { twMerge } from "tailwind-merge";
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs));
+}