[js] move auth statics

lib/firebase.js

@@ -8,7 +8,7 @@ import Log from './utils/log';
 import { isObject } from './utils';
 
 // modules
-import Auth from './modules/auth';
+import Auth, { statics as AuthStatics } from './modules/auth';
 import Storage, { statics as StorageStatics } from './modules/storage';
 import Database, { statics as DatabaseStatics } from './modules/database';
 import Messaging from './modules/messaging';
@@ -54,8 +54,12 @@ export default class Firebase {
       throw new Error(`Google Play Services is required to run this application but no valid installation was found (Code ${this.googleApiAvailability.status}).`);
     }
 
+    this.auth = this._staticsOrInstance('auth', StorageStatics, Auth);
     this.storage = this._staticsOrInstance('storage', StorageStatics, Storage);
     this.database = this._staticsOrInstance('database', DatabaseStatics, Database);
+
+    // init auth to stat listeners
+    this.auth();
   }
 
   /**
@@ -81,10 +85,6 @@ export default class Firebase {
     return instances[name];
   }
 
-  auth() {
-    return this._auth;
-  }
-
   analytics() {
     if (!this._analytics) {
       this._analytics = new Analytics(this);

lib/modules/auth/index.js

@@ -25,13 +25,6 @@ export default class Auth extends Base {
     this._authResult = null;
     this.authenticated = false;
 
-    // attach auth providers
-    this.EmailAuthProvider = EmailAuthProvider;
-    this.GoogleAuthProvider = GoogleAuthProvider;
-    this.FacebookAuthProvider = FacebookAuthProvider;
-    this.TwitterAuthProvider = TwitterAuthProvider;
-    this.GithubAuthProvider = GithubAuthProvider;
-
     // start listening immediately for auth changes
     FirebaseAuthEvt.addListener('onAuthStateChanged', this._onAuthStateChanged.bind(this));
     FirebaseAuth.addAuthStateListener();
@@ -175,3 +168,11 @@ export default class Auth extends Base {
     return 'firebase:auth';
   }
 }
+
+export const statics = {
+  GoogleAuthProvider,
+  EmailAuthProvider,
+  FacebookAuthProvider,
+  TwitterAuthProvider,
+  GithubAuthProvider,
+};