fix(storage): Support typing generation for the storage API

gulpfile.js

@@ -57,10 +57,11 @@ var paths = {
     '!src/credential.d.ts',
     '!src/database.d.ts',
     '!src/instance-id.d.ts',
-    '!src/security-rules.d.ts',
+    '!src/messaging.d.ts',
     '!src/project-management.d.ts',
     '!src/remote-config.d.ts',
-    '!src/messaging.d.ts',
+    '!src/security-rules.d.ts',
+    '!src/storage.d.ts',
   ],
 };
 
@@ -71,7 +72,6 @@ const TEMPORARY_TYPING_EXCLUDES = [
   '!lib/firebase-service.d.ts',
   '!lib/auth/*.d.ts',
   '!lib/machine-learning/*.d.ts',
-  '!lib/storage/*.d.ts',
   '!lib/utils/*.d.ts',
 ];
 
@@ -110,10 +110,10 @@ gulp.task('compile', function() {
 
     // Add header
     .pipe(header(banner));
-  
+
   // Exclude typings that are unintended (currently excludes all auto-generated
   // typings, but as services are refactored to auto-generate typings this will
-  // change). Moreover, all *-internal.d.ts typings should not be exposed to 
+  // change). Moreover, all *-internal.d.ts typings should not be exposed to
   // developers as it denotes internally used types.
   if (declaration) {
     const configuration = [
@@ -153,7 +153,7 @@ gulp.task('copyTypings', function() {
   let workflow = gulp.src('src/*.d.ts')
     // Add header
     .pipe(header(banner));
-  
+
   if (declaration) {
     workflow = workflow.pipe(filter(paths.curatedTypings));
   }

src/index.d.ts

@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-import { Bucket } from '@google-cloud/storage';
 import * as _firestore from '@google-cloud/firestore';
 import { Agent } from 'http';
 
@@ -26,6 +25,7 @@ import * as _instanceId from './instance-id';
 import * as _projectManagement from './project-management';
 import * as _remoteConfig from './remote-config';
 import * as _securityRules from './security-rules';
+import * as _storage from './storage';
 
 /* eslint-disable @typescript-eslint/ban-types */
 
@@ -651,24 +651,7 @@ declare namespace admin.messaging {
 }
 
 declare namespace admin.storage {
-
-  /**
-   * The default `Storage` service if no
-   * app is provided or the `Storage` service associated with the provided
-   * app.
-   */
-  interface Storage {
-    /**
-     * Optional app whose `Storage` service to
-     * return. If not provided, the default `Storage` service will be returned.
-     */
-    app: admin.app.App;
-    /**
-     * @returns A [Bucket](https://cloud.google.com/nodejs/docs/reference/storage/latest/Bucket)
-     * instance as defined in the `@google-cloud/storage` package.
-     */
-    bucket(name?: string): Bucket;
-  }
+  export import Storage = _storage.admin.storage.Storage;
 }
 
 declare namespace admin.firestore {

src/storage.d.ts

@@ -0,0 +1,39 @@
+/*!
+ * Copyright 2020 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { Bucket } from '@google-cloud/storage';
+import * as _admin from './index.d';
+
+export namespace admin.storage {
+
+  /**
+   * The default `Storage` service if no
+   * app is provided or the `Storage` service associated with the provided
+   * app.
+   */
+  export interface Storage {
+    /**
+     * Optional app whose `Storage` service to
+     * return. If not provided, the default `Storage` service will be returned.
+     */
+    app: _admin.app.App;
+    /**
+     * @returns A [Bucket](https://cloud.google.com/nodejs/docs/reference/storage/latest/Bucket)
+     * instance as defined in the `@google-cloud/storage` package.
+     */
+    bucket(name?: string): Bucket;
+  }
+}

src/storage/index.ts

@@ -0,0 +1,32 @@
+/*!
+ * Copyright 2020 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import * as _storage from './storage';
+import { FirebaseApp } from '../firebase-app';
+import * as firebaseAdmin from '../index';
+
+export function storage(app?: FirebaseApp): _storage.Storage {
+  if (typeof(app) === 'undefined') {
+    app = firebaseAdmin.app();
+  }
+  return app.storage();
+}
+
+/* eslint-disable @typescript-eslint/no-namespace */
+export namespace admin.storage {
+    /* eslint-disable @typescript-eslint/no-empty-interface */
+  export interface Storage extends _storage.Storage {}
+}

src/storage/storage.ts

@@ -39,7 +39,9 @@ class StorageInternals implements FirebaseServiceInternalsInterface {
 }
 
 /**
- * Storage service bound to the provided app.
+ * The default `Storage` service if no
+ * app is provided or the `Storage` service associated with the provided
+ * app.
  */
 export class Storage implements FirebaseServiceInterface {
   public readonly INTERNAL: StorageInternals = new StorageInternals();
@@ -50,6 +52,7 @@ export class Storage implements FirebaseServiceInterface {
   /**
    * @param {FirebaseApp} app The app for this Storage service.
    * @constructor
+   * @internal
    */
   constructor(app: FirebaseApp) {
     if (!validator.isNonNullObject(app) || !('options' in app)) {
@@ -98,12 +101,10 @@ export class Storage implements FirebaseServiceInterface {
   }
 
   /**
-   * Returns a reference to a Google Cloud Storage bucket. Returned reference can be used to upload
-   * and download content from Google Cloud Storage.
-   *
-   * @param {string=} name Optional name of the bucket to be retrieved. If name is not specified,
-   *   retrieves a reference to the default bucket.
-   * @return {Bucket} A Bucket object from the @google-cloud/storage library.
+   * @param name Optional name of the bucket to be retrieved. If name is not specified,
+   * retrieves a reference to the default bucket.
+   * @returns A [Bucket](https://cloud.google.com/nodejs/docs/reference/storage/latest/Bucket)
+   * instance as defined in the `@google-cloud/storage` package.
    */
   public bucket(name?: string): Bucket {
     const bucketName = (typeof name !== 'undefined')
@@ -120,9 +121,7 @@ export class Storage implements FirebaseServiceInterface {
   }
 
   /**
-   * Returns the app associated with this Storage instance.
-   *
-   * @return {FirebaseApp} The app associated with this Storage instance.
+   * @return The app associated with this Storage instance.
    */
   get app(): FirebaseApp {
     return this.appInternal;

test/integration/typescript/src/example.test.ts

@@ -71,7 +71,8 @@ describe('Init App', () => {
   });
 
   it('Should return a Cloud Storage client', () => {
-    const bucket: Bucket = app.storage().bucket('TestBucket');
+    const storage: admin.storage.Storage = app.storage();
+    const bucket: Bucket = storage.bucket('TestBucket');
     expect(bucket.name).to.equal('TestBucket');
   });