Auth not making use of ADC or GOOGLE_APPLICATION_CREDENTIALS env variable?

[enahsor]

[REQUIRED] Step 2: Describe your environment

• Operating System version: Mac OS 13.0.1
• Firebase SDK version: 11.3.0
• Firebase Product: auth
• Node.js version: v18.12.0
• NPM version: 8.19.2

[REQUIRED] Step 3: Describe the problem

Steps to reproduce:

gcloud config set project $project_id
gcloud auth application-default login

With this, I'd assume that the ADC has been generated and the auth module should be able to make authenticated calls to firebase servers but I end up with this response: Failed to determine project ID for Auth. Initialize the SDK with service account credentials or set project ID as an app option. Alternatively set the GOOGLE_CLOUD_PROJECT environment variable.
Ok. Fine. I follow the instructions laid out here. I end up with the same response. I have also tried passing the project-id in the init function but still. Any ideas about what I might be doing incorrectly or is this a bug?

Relevant Code:

// Initialize Firebase Admin

import * as admin from "firebase-admin";

let app;
const appExists = !(admin.apps.length <= 0);

if (appExists) {
  app = admin.apps[0] as admin.app.App;
} else {
  app = admin.initializeApp({
      credential: admin.credential.applicationDefault(),
    } );
}

const auth = app.auth();

export { auth, app };

import { auth } from "./index";

const manager = auth.tenantManager();

const createTenant = async (displayName: string) => {

    const tenant = await manager.createTenant({
      displayName: displayName,
      emailSignInConfig: { enabled: true, passwordRequired: true },
    });
    return tenant.toJSON();
};

export { createTenant };

Calling createTenant returns this response Failed to determine project ID for Auth. Initialize the SDK with service account credentials or set project ID as an app option. Alternatively set the GOOGLE_CLOUD_PROJECT environment variable.

[lahirumaramba]

Hi @enahsor,
You can specify the project ID explicitly on app initialization or just use the GOOGLE_CLOUD_PROJECT environment variable. The latter avoids the need to make any additional changes to test your code.

In your local environment set:

export GOOGLE_CLOUD_PROJECT = "project-id"

To explicitly specify the project ID in your code:

import { initializeApp, applicationDefault } from 'firebase-admin/app';

initializeApp({
  credential: applicationDefault(),
  projectId: '<FIREBASE_PROJECT_ID>',
});

Since default credentials lookup is fully automated in Google environments, your GCP prod environment should have the GOOGLE_CLOUD_PROJECT environment already set.