Firebase database isn't starting-CodePudding

I am a newbie in JavaScript. Recently I have installed firebase admin and kept the code in global scope, database.js. Like this.

import app from 'firebase-admin';
import firebase_key from './firebase_key.js';
app.initializeApp({
    credential: app.credential.cert(firebase_key),
    databaseURL: "https://study-boss-681fa-default-rtdb.firebaseio.com"
});
console.log('database started');
export default app.database();

Now I want to access this database from my service class. My serice class is

import { getDatabase} from "firebase-admin/database";
const database = getDatabase();

This service class code is throwing the following error. FirebaseAppError: The default Firebase app does not exist. Make sure you call initializeApp() before using any of the Firebase services.

CodePudding user response：

If you are just using getDatabase() directly then there's a high chance that it's being access before your initializeApp is executed. I would recommend initializing all Firebase services in a single file and importing them wherever required as shown below:

import { initializeApp } from 'firebase-admin/app';
import { getDatabase } from 'firebase-admin/database';

import firebase_key from './firebase_key.js';

const app = initializeApp({
    credential: app.credential.cert(firebase_key),
    databaseURL: "https://study-boss-681fa-default-rtdb.firebaseio.com"
});

const database = getDatabase(app);
console.log('database started');

export { database };

Now you can import { database } from "..path/to/firebase.js" wherever required.