feat(fcm): Exposed FCM APIs from firebase-admin/messaging entry point (#1153)

* feat(fcm): Exposed FCM APIs from firebase-admin/messaging entry point

* Update src/messaging/messaging-api.ts

Co-authored-by: Lahiru Maramba <[email protected]>

Co-authored-by: Lahiru Maramba <[email protected]>

Author: hiranya911

etc/firebase-admin.api.md

@@ -39,6 +39,7 @@ const entryPoints = {
   'firebase-admin/database': './lib/database/index.d.ts',
   'firebase-admin/firestore': './lib/firestore/index.d.ts',
   'firebase-admin/instance-id': './lib/instance-id/index.d.ts',
+  'firebase-admin/messaging': './lib/messaging/index.d.ts',
   'firebase-admin/remote-config': './lib/remote-config/index.d.ts',
 };
 

etc/firebase-admin.messaging.api.md

@@ -92,6 +92,7 @@ gulp.task('compile', function() {
     'lib/database/*.d.ts',
     'lib/firestore/*.d.ts',
     'lib/instance-id/*.d.ts',
+    'lib/messaging/*.d.ts',
     'lib/remote-config/*.d.ts',
     '!lib/utils/index.d.ts',
   ];

generate-reports.js

@@ -23,12 +23,12 @@ import { deepCopy } from '../utils/deep-copy';
 import { FirebaseNamespaceInternals } from './firebase-namespace';
 import { AppErrorCodes, FirebaseAppError } from '../utils/error';
 
-import { Auth } from '../auth/auth';
+import { Auth } from '../auth/index';
 import { MachineLearning } from '../machine-learning/machine-learning';
-import { Messaging } from '../messaging/messaging';
+import { Messaging } from '../messaging/index';
 import { Storage } from '../storage/storage';
 import { Database } from '../database/index';
-import { Firestore } from '@google-cloud/firestore';
+import { Firestore } from '../firestore/index';
 import { InstanceId } from '../instance-id/index';
 import { ProjectManagement } from '../project-management/project-management';
 import { SecurityRules } from '../security-rules/security-rules';
@@ -293,10 +293,8 @@ export class FirebaseApp implements app.App {
    * @return The Messaging service instance of this app.
    */
   public messaging(): Messaging {
-    return this.ensureService_('messaging', () => {
-      const messagingService: typeof Messaging = require('../messaging/messaging').Messaging;
-      return new messagingService(this);
-    });
+    const fn = require('../messaging/index').getMessaging;
+    return fn(this);
   }
 
   /**