Initially developed an application without NodeJS. But then I connected Node.JS, because I need to take all the collections in the database using listCollections(). Before connecting Node Firebase, I initialized in the Firebase.js file. Now I have added Node.JS and made the firebase-admin connection as shown in the example. But when starting the server, the error is FirebaseAppError: The default Firebase app does not exist. Make sure you call initializeApp() before using any of the Firebase services. How t
// server.js
const express = require("express");
const admin = require("firebase-admin");
const db = admin.firestore();
const app = express();
const PORT = 3000;
app.use(express.static("public"));
app.get("/", (req, res) => {
res.send("Hello World!");
});
app.listen(PORT, () => console.log(`Server listening on port: ${PORT}`));
db.listCollections()
.then((snapshot) => {
snapshot.forEach((snaps) => {
console.log(snaps["_queryOptions"].collectionId); // LIST OF ALL COLLECTIONS
});
})
.catch((error) => console.error(error));
// firebase.js
const firebaseConfig = {
apiKey: "...",
authDomain: "..",
projectId: "...",
storageBucket: "...",
messagingSenderId: "...",
appId: "...",
measurementId: "...",
};
firebase.initializeApp(firebaseConfig);
var db = firebase.firestore();o properly connect Firebase?