Error: The Firebase App named `[DEFAULT]` does not exist, despite calling the initializeApp function

Question

Error: The Firebase App named `[DEFAULT]` does not exist, despite calling the initializeApp function

I'm currently facing an issue while trying to integrate Firebase (Firestore) into my Nuxt project. When I try to initialize a const using firebase.firestore() in my index.vue file, I encounter the following error:

Uncaught FirebaseError: Firebase: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp() (app/no-app).

I have successfully installed Firebase and the necessary module (@nuxtjs/firebase) in my project.

Here is how my nuxt.config.js file is configured:

export default {

...

plugins: ['~/plugins/firebase.js'],

components: true,

buildModules: [
    '@nuxt/typescript-build',
    '@nuxtjs/tailwindcss',
],

modules: [],

...

}

My firebase.js file can be found within the plugins folder and it looks like this:

import firebase from 'firebase/app'

const config = {
    ...
}

let app = null
if (!firebase.apps.length) {
    app = firebase.initializeApp(config)
}

export default firebase

I've compared my setup with other examples online but haven't been able to identify any issues. As someone new to both Nuxt and Firebase, I may be overlooking something obvious. Any suggestions would be greatly appreciated.

javascript firebase vue.js nuxt.js

Answer 1

Answer №1

Calling initializeApp() multiple times on a single firebase app can lead to this issue. To avoid it, ensure that you initialize the firebase db when your application launches.

Answer 2

Calling initializeApp() multiple times on a single firebase app can lead to this issue. To avoid it, ensure that you initialize the firebase db when your application launches.

Answer 3

Answer №2

As per a discussion on GitHub, the suggested snippet for using firebase.js is as follows:

import fb from "firebase/app"
export const firebase = !fb.apps.length ? fb.initializeApp(firebaseConfig) : fb.app()

// somecomponent.js
import {firebase} from "../firebase.js"

// do your firebase stuff here

Credit goes to @Brunocrosier for sharing this post. Although this snippet may not be specific to any case, I have included it for thoroughness.

In addition to the above thread, encountering the error message

Uncaught FirebaseError: Firebase: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp()

typically occurs when either calling firebase. without initializing via .initializeApp();, or multiple calls to .initializeApp() (e.g., both in backend and frontend initialization in cases like Next.js).

To resolve this issue, it is recommended to centralize the initialization process in the firebase.js file to ensure proper app initialization upon startup.

For additional information, consider exploring:

The nuxt/firebase documentation
Error: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp()
The aforementioned GitHub Discussion
Firebase JavaScript documentation

Answer 4

As per a discussion on GitHub, the suggested snippet for using firebase.js is as follows:

import fb from "firebase/app"
export const firebase = !fb.apps.length ? fb.initializeApp(firebaseConfig) : fb.app()

// somecomponent.js
import {firebase} from "../firebase.js"

// do your firebase stuff here

Credit goes to @Brunocrosier for sharing this post. Although this snippet may not be specific to any case, I have included it for thoroughness.

In addition to the above thread, encountering the error message

Uncaught FirebaseError: Firebase: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp()

typically occurs when either calling firebase. without initializing via .initializeApp();, or multiple calls to .initializeApp() (e.g., both in backend and frontend initialization in cases like Next.js).

To resolve this issue, it is recommended to centralize the initialization process in the firebase.js file to ensure proper app initialization upon startup.

For additional information, consider exploring:

The nuxt/firebase documentation
Error: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp()
The aforementioned GitHub Discussion
Firebase JavaScript documentation

Answer 5

Answer №3

Encountering this issue typically means attempting to access Firestore before Firebase has been initialized. While one way to check if Firebase is initialized is by using firebase.apps.length, it's not recommended to initialize Firebase repeatedly.

If you're solely utilizing Firestore in your plugin, you can export Firestore directly after initialization like so:

import firebase from 'firebase/app'

const config = {
    ...
}

let app = null
if (!firebase.apps.length) {
    app = firebase.initializeApp(config)
}

export default firebase.firestore()

Since you're working with Nuxt, there is a specific Nuxt package designed for Firebase integration called firebase/nuxt. By installing this package, you can configure Firebase within the Nuxt configuration module as shown below:

modules: [
    [
      '@nuxtjs/firebase',
      {
        config: {
          apiKey: '<apiKey>',
          authDomain: '<authDomain>',
          databaseURL: '<databaseURL>',
          projectId: '<projectId>',
          storageBucket: '<storageBucket>',
          messagingSenderId: '<messagingSenderId>',
          appId: '<appId>',
          measurementId: '<measurementId>'
        },
        services: {
          auth: true // Just as example. Can be any other service.
        }
      }
    ]
  ],

Utilizing Firebase through the Nuxt.js ecosystem is considered a more efficient approach.

Answer 6

Encountering this issue typically means attempting to access Firestore before Firebase has been initialized. While one way to check if Firebase is initialized is by using firebase.apps.length, it's not recommended to initialize Firebase repeatedly.

If you're solely utilizing Firestore in your plugin, you can export Firestore directly after initialization like so:

import firebase from 'firebase/app'

const config = {
    ...
}

let app = null
if (!firebase.apps.length) {
    app = firebase.initializeApp(config)
}

export default firebase.firestore()

Since you're working with Nuxt, there is a specific Nuxt package designed for Firebase integration called firebase/nuxt. By installing this package, you can configure Firebase within the Nuxt configuration module as shown below:

modules: [
    [
      '@nuxtjs/firebase',
      {
        config: {
          apiKey: '<apiKey>',
          authDomain: '<authDomain>',
          databaseURL: '<databaseURL>',
          projectId: '<projectId>',
          storageBucket: '<storageBucket>',
          messagingSenderId: '<messagingSenderId>',
          appId: '<appId>',
          measurementId: '<measurementId>'
        },
        services: {
          auth: true // Just as example. Can be any other service.
        }
      }
    ]
  ],

Utilizing Firebase through the Nuxt.js ecosystem is considered a more efficient approach.

Error: The Firebase App named `[DEFAULT]` does not exist, despite calling the initializeApp function

Answer №1

Answer №2

Answer №3

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