How to initialize firebase admin using modular Firebase v9?

Question

I'm using firebase admin to interact with Firestore and auth from a custom backend (next.js api routes).

Firebase recently announced they're going with modular tree-shaking packages.

How can I refactor below code to utilize tree-shaking firebase module?

import * as firebaseAdmin from "firebase-admin";

if (!firebaseAdmin.apps.length) {
  const adminCredentials = {
    credential: firebaseAdmin.credential.cert({
      projectId: env.fbProjIdPublic,
      clientEmail: env.fbClientEmail,
      privateKey: JSON.parse(env.fbPvtKey),
    }),
    databaseURL: env.fbDbUrlPublic,
  };

  firebaseAdmin.initializeApp(adminCredentials);
}

export default firebaseAdmin;

So far I couldn't find replacement for firebaseAdmin.credential.cert .

Answer 1

The documentation you linked is for the Web/JavaScript SDK, not for the Node.js Admin SDKs.

A modular Admin SDK for Node.js is under development, but not generally available yet. You can find the latest information and how to join the alpha program here .

You can also track its progress on the Github repo, like on this recent feature request , and this request for feedback from the engineers working on it.

Answer 2

I've tried and this works.

Env variables not being strings was my problem on local

import { initializeApp, App, AppOptions, getApps, getApp, cert } from "firebase-admin/app";


const clientEmail = process.env.FIREBASE_CLIENT_EMAIL;
const privateKey = process.env.FIREBASE_PRIVATE_KEY;
const projectId = process.env.FIREBASE_PROJECT_ID;

const firebaseAdminConfig: AppOptions = {
  credential: cert({
    clientEmail,
    privateKey,
    projectId,
  }),
};