Check app check init

Author: hsubox76

packages/app-check-interop-types/index.d.ts

@@ -28,6 +28,9 @@ export interface FirebaseAppCheckInternal {
 
   // Unregisters a listener to changes in the token state.
   removeTokenListener(listener: AppCheckTokenListener): void;
+
+  // Returns true if user has initialized App Check.
+  isInitialized(): boolean;
 }
 
 type AppCheckTokenListener = (token: AppCheckTokenResult) => void;

packages/app-check/src/factory.ts

@@ -26,7 +26,10 @@ import {
 } from './internal-api';
 import { Provider } from '@firebase/component';
 
+const isInitializedMap: Record<string, boolean> = {};
+
 export function factory(app: FirebaseApp): FirebaseAppCheck {
+  isInitializedMap[app.options.appId!] = true;
   return {
     activate: (
       siteKeyOrProvider: string | AppCheckProvider,
@@ -42,6 +45,7 @@ export function internalFactory(
   platformLoggerProvider: Provider<'platform-logger'>
 ): FirebaseAppCheckInternal {
   return {
+    isInitialized: () => isInitializedMap[app.options.appId!],
     getToken: forceRefresh =>
       getToken(app, platformLoggerProvider, forceRefresh),
     addTokenListener: listener =>

packages/storage/src/service.ts

@@ -254,7 +254,7 @@ export class StorageService implements _FirebaseService {
 
   async _getAppCheckToken(): Promise<string | null> {
     const appCheck = this._appCheckProvider.getImmediate({ optional: true });
-    if (appCheck) {
+    if (appCheck && appCheck.isInitialized()) {
       const result = await appCheck.getToken();
       // TODO: What do we want to do if there is an error getting the token?
       // Context: appCheck.getToken() will never throw even if an error happened. In the error case, a dummy token will be