Nodejs firebase in 4 step

1- Creating an Firebase application

Creating an Firebase application by a click on https://console.firebase.google.com/

2- Get service account key After you click the Generate New Private Key button, a JSON file containing your service account’s credentials will be downloaded. You’ll need this to initialize the SDK in the next step. To read more: https://firebase.google.com/docs/admin/setup

3- Setup Node.js project Setting up Node.js application for Firebase project is easy,  

Reference:  — https://firebase.google.com/docs/admin/setup