Installation

src/config/firebase.js

const { initializeApp, applicationDefault} = require("firebase-admin/app");
const {getFirestore} = require("firebase-admin/firestore");

var admin = require("firebase-admin");

initializeApp({
  credential: applicationDefault(),
  databaseURL: "YOUR_DATABASE_URL",
});

const db = getFirestore();
var rt = admin.database();

module.exports = { db, rt };