Error in firebase-admin dependency: '@firebase/app' does not contain a default export (imported as 'firebase').

[taletski]

Environment

• Operating System version: macOS Big Sur 11.5.1 (20G80)
• Firebase SDK version: 9.0.2
• Firebase Product: database
• Node.js version: 16.7.0
• NPM version: 7.20.3
• Yarn version: 1.22.11

The problem

After the installation to the Next.js (v10.0.5) environment the project compiling fails with an error:

error - ./node_modules/firebase-admin/node_modules/@firebase/database/dist/index.esm.js
Attempted import error: '@firebase/app' does not contain a default export (imported as 'firebase').

I was only able to 'fix' it by changing import firebase from '@firebase/app' to import * as firebase from '@firebase/app' in ./node_modules/firebase-admin/node_modules/@firebase/database/dist/index.esm.js.

Is that the firebase-admin obsolete dependency issue?

Steps to reproduce:

1. Install the firebase-admin to the Next.js project: yarn add firebase-admin;
2. Run next dev server: yarn dev;
3. See that it won't compile because of the following error:

error - ./node_modules/firebase-admin/node_modules/@firebase/database/dist/index.esm.js
Attempted import error: '@firebase/app' does not contain a default export (imported as 'firebase').

[hiranya911]

@Feiyang1 do you have any idea what this is about?

[Feiyang1]

We accidentally removed the export that the admin SDK uses in v9, and removed the condition that prevent @firebase/app from being evaluated when used in the admin SDK. I will add them back.

Before the fix is released, the admin SDK has to use @firebase/database version 0.11.x or below. You will need to manually remove /node_modules/firebase-admin/node_modules/@firebase/database, and install a compatible @firebase/database version. It can become complicated if you are also using the firebase package because of package hoisting.

I can make an emergency release, so it may be better to just wait for the fix in the next firebase release.

[hiranya911]

Fixed in v9.12.0