Restore interop type

Author: hsubox76

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

@@ -30,10 +30,7 @@ export interface FirebaseAppCheckInternal {
   removeTokenListener(listener: (token: AppCheckTokenResult) => void): void;
 }
 
-interface AppCheckTokenListener {
-  listener: (token: AppCheckTokenResult) => void;
-  onError?: (error: Error) => void;
-}
+type AppCheckTokenListener = (token: AppCheckTokenResult) => void;
 
 // If the error field is defined, the token field will be populated with a dummy token
 interface AppCheckTokenResult {

packages/app-check/src/internal-api.ts

@@ -18,11 +18,12 @@
 import { getToken as getReCAPTCHAToken } from './recaptcha';
 import { FirebaseApp } from '@firebase/app-types';
 import {
-  AppCheckTokenResult,
-  AppCheckTokenListener
+  AppCheckTokenListener,
+  AppCheckTokenResult
 } from '@firebase/app-check-interop-types';
 import {
   AppCheckTokenInternal,
+  AppCheckTokenListenerInternal,
   getDebugState,
   getState,
   setState
@@ -167,11 +168,11 @@ export async function getToken(
 export function addTokenListener(
   app: FirebaseApp,
   platformLoggerProvider: Provider<'platform-logger'>,
-  listener: (token: AppCheckTokenResult) => void,
+  listener: AppCheckTokenListener,
   onError?: (error: Error) => void
 ): void {
   const state = getState(app);
-  const tokenListener: AppCheckTokenListener = {
+  const tokenListener: AppCheckTokenListenerInternal = {
     listener,
     onError
   };

packages/app-check/src/state.ts

@@ -25,9 +25,13 @@ import { GreCAPTCHA } from './recaptcha';
 export interface AppCheckTokenInternal extends AppCheckToken {
   issuedAtTimeMillis: number;
 }
+export interface AppCheckTokenListenerInternal {
+  listener: AppCheckTokenListener;
+  onError?: (error: Error) => void;
+}
 export interface AppCheckState {
   activated: boolean;
-  tokenListeners: AppCheckTokenListener[];
+  tokenListeners: AppCheckTokenListenerInternal[];
   customProvider?: AppCheckProvider;
   siteKey?: string;
   token?: AppCheckTokenInternal;