diff --git a/packages/nuxt/src/app/utils.ts b/packages/nuxt/src/app/utils.ts
index 4d5d2c3ae..2bd768f25 100644
--- a/packages/nuxt/src/app/utils.ts
+++ b/packages/nuxt/src/app/utils.ts
@@ -4,10 +4,10 @@ export function toArray<T> (value: T | T[]): T[] {
   return Array.isArray(value) ? value : [value]
 }
 
-export type CallbackFn = () => void
+type CallbackFn = () => void
 type ObserveFn = (element: Element, callback: CallbackFn) => () => void
 
-function useObserver (): { observe: ObserveFn } | undefined {
+export function useObserver (): { observe: ObserveFn } | undefined {
   if (import.meta.server) { return }
 
   const nuxtApp = useNuxtApp()