TypeError: firebase.storage is not a function

问题:

Following this example, I keep getting the error:

 TypeError: firebase.storage is not a function

From this line in my code:

var storageRef = firebase.storage().ref();

(And when I simply try to initialize storage from the storage guide, linked from firebase's npm site, I get the same error.)

In my Node.js project, I'm including the following libraries:

• const firebase = require('firebase');
• var admin = require('firebase-admin');
• const fs = require('fs');

Up to this point, I've successfully been able to read from and write to the firebase database, creating a reference to the database with var db = admin.database(), then var ref = db.ref("/")... So I know I've configured Firebase and firebase-database correctly. But I'm stuck on storage, and have tried both admin.storage().ref() and firebase.storage().ref(), and firebase.storage().ref("/") with the same error message.

I've also tried:

var storage = firbase.storage(); var storageRef = storage.ref();

and

const app = firebase.initializeApp(config); var storage = app.storage();

and with ref()'s void argument () and with "/"... but have the same message, yet to no avail.

I'm using:

• "firebase": "^3.6.4"
• "firebase-admin": "^4.0.4"
• Node.js : v6.9.1

What must I do to successfully create a reference to storage?

回答1:

According to this answer, instead of firebase storage, in Node.js, google-cloud package storage should be used, and it seems that this answer should confirm it. Code example:

npm i --save google-cloud

Then:

const gcloud = require('google-cloud')  const storage = gcloud.storage({     projectId: '',     keyFilename: 'service-account-credentials.json', });  const bucket = storage.bucket('.appspot.com')

Or using only the storage part of the package:

npm install --save @google-cloud/storage

And then:

var storage = require('@google-cloud/storage')

Also check the docs for more.

回答2:

Some details to note:

1. Firebase Storage is not longer used with Node.js, all documentation there is useless for Node.js. Instead use google-cloud. The references and guides for Firebase and Google Cloud do not reflect this as of today.
2. Unlike Firebase, google-cloud costs money, even for small projects.
3. In my case, I'm using the firebase-admin SDK so I don't have to mess with user authentication at the moment.

---

Purpose

To create a single Node.js project which uses Firebase and Google Cloud. Why? Firebase has a useful database, among other features, and Google Cloud allows cloud file storage and retrieval.

Directions

Step 1: Project Creation

Create Firebase and Google Cloud (Storage) projects.

Step 2: Install Packages

Using npm, install firebase-admin and google-cloud in Node.js project.

Note 1: I used the admin SDK, so after creating the Firebase project, you'll need to go to:

• Settings(the gear) > Project Settings > Service Accounts > Firebase Admin SDK
• Then you: Select Node.js > [Copy/paste the generated code into your project] > [click "Generate New Private Key"] > [download the generated json to preferred location] > [replace "path/to...AccountKey.json" with the path to the key you just generated]

Note 2: the generated key can be reused in firebase or google-cloud credentials.

Step 3: Firebase Setup

Once your project is created, import the firebase-admin sdk:

The code should look like this, but filled with your info:

var admin = require("firebase-admin"); admin.initializeApp({   credential: admin.credential.cert("/path/to/generated/json/here.json"),   databaseURL: "database-url-from-firebase" });

To find the databaseURL, go to 'Storage' in Firebase, and note the URL starting with gs: and copy/paste it the the value field of databaseURL.

Next, get a reference to the database you can use:

var db = admin.database(); var ref = db.ref("/"); console.log('DB ref: ' + ref); //just to debug, if undefined, there's a problem.

To learn more about reading/writing to the datbase, follow Firebase's own documentation.

Step 4: Google-Cloud Billing Setup

After creating a project on Google Cloud, add billing information; buckets cannot be used without billing info.

Step 5: Google-Cloud Storage Setup

1. Scrolling through the menu (the horizontal 3-bars), click "Storage", then "Enable Billing". Yes, you added billing info, now you need to enable it for that project's buckets.
2. You should see that a bucket should already exists from your Firebase project.
3. Click on menu again(3-bar icon), then > IAM & Admin > Settings
4. At settings, you'll see "Project ID" which should look like "projectName-00000" or "projectName-Some#", copy that project ID

Step 6: Google Cloud in Node.js

In your index.js:

var gcloud = require('google-cloud'); var gcs = gcloud.storage({   projectId: 'paste-that-project-id-here',   keyFilename: 'paste-that-path-to-the-previously-downloaded-json-from-firebase-here' });

Now you can send a file to your storage by:

var bucket = gcs.bucket('bucket_name'); var remoteFile = bucket.file('somefile-inThisCaseASong.mp3'); var localFilename = '/Users/you/Music/somefile-inThisCaseASong.mp3'; bucket.upload(localFilename, function(err, file) {   if (!err) {     console.log('somefile-inThisCaseASong.mp3 is now in your bucket.');   } else {     console.log('Error uploading file: ' + err);   } });

Step 7: Verify

If the file is visible in Firebase Storage and Google Cloud Storage, you're done!

回答3:

When using Storage with Firebase, you're correct that you can't add buckets on the free tier. However, you DO get a bucket (just one) by default. My (eventually) successful approach was to:

1. Add Storage to my project in Firebase (NOT Google Cloud)

2. Add the Admin SDK and set up the necessary Service Account as per the Google Docs: https://firebase.google.com/docs/admin/setup?authuser=1

3. Add the "@google-cloud/storage" package as per the instructions on using the Admin SDK with storage: https://firebase.google.com/docs/storage/admin/start?authuser=1

4. Initialize the app:

   admin.initializeApp({ credential: admin.credential.cert("/path/to/generated/json/here.json"), storageBucket: "folder-URL-from-Storage-page-excluding-gs://" });

5. Access the bucket object with (from Admin SDK docs):

   const bucket = admin.storage().bucket()

6. Operate on the bucket with the storage library. Example:

   bucket.upload('/path/file.ext', function(err, file, apiResponse) { //Do Stuff });

NOTE: I spent a couple of hours convinced it wasn't working because I didn't have a bucket, but it turned out my mistake was including the "gs://" in the path to my storage bucket when initializing.

回答4:

Does it change if you try to do it like the following?

// Initialize the default app: const app = firebase.initializeApp(appConfig)  // Initialize storage from the *app* object: const storage = app.storage()

From the docs, it seems that this is an alternate method. I prefer this one, as this links the storage to the app, making the code more readable, and more functional

回答5:

It looks like they have fixed it in a new version of the library. Just run npm update on the relevant package(s) and it should work.

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