build: ignore module augmentation

Author: posva

packages/nuxt/src/module.ts

@@ -285,6 +285,7 @@ declare module '@nuxt/schema' {
   }
 }
 
+// @ts-ignore: #app not found error when building
 declare module '#app' {
   interface NuxtApp {
     $firebaseApp: FirebaseApp

packages/nuxt/src/runtime/app/composables.ts

@@ -1,6 +1,7 @@
+import type { FirebaseApp } from 'firebase/app'
 import { useNuxtApp } from '#app'
 
 /**
  * Gets the firebase instance from the current Nuxt App. This can be used anywhere the `useNuxtApp()` can be used. Differently from `vuefire`'s `useFirebaseApp()`, this doesn't accept a name.
  */
-export const useFirebaseApp = () => useNuxtApp().$firebaseApp
+export const useFirebaseApp = (): FirebaseApp => useNuxtApp().$firebaseApp