[🔥] firebase not initializing after migrating React Native from 0.71.13 to 0.78.2

[saadalla]

Issue

I have a firebase messaging app that used to work fine, then I was forced to migrate by apple store.
I have migrated my RN app from 0.71 to 0.78.2
I kept my firebase version to the one that used to work there and as per the documentation this should not be an issue. So I am using these:
"@react-native-firebase/app": "10.5.0",
"@react-native-firebase/messaging": "10.5.1",

Both iOS and Android firebase functions stopped working.
It seems an issue in firebase app initialize
As per the documentation, I do not need to call the firebase.initializeApp() explicitly.
So what went wrong

// Init code
import firebase from '@react-native-firebase/app';
var platform = Platform.OS;
let appCount = firebase.apps.length;
console.log(mod + 'initialize, platform=' + platform, ' count=' + appCount, firebase);
if (appCount == 0) {
firebase_App = firebase.initializeApp();
console.log(mod + 'app=', firebase_App);
}

Output:
firebase_config:initialize, platform=android count=0

// Messaging code
import messaging from '@react-native-firebase/messaging';
try {
firebaseFCM = FirebaseTools.firebase.messaging();
} catch (err) {
FCM_Failed = true;
console.warn(mod+'Failed to initialize Firebase Messaging', err);
}

Output:
messaging.js:59 FCM: Failed to initialize Firebase Messaging Error: No Firebase App '[DEFAULT]' has been created - call firebase.initializeApp()
at getApp (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:150702:22)
at firebaseModuleWithApp (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:150926:76)
at ?anon_0_ (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:151086:109)
at next (native)
at asyncGeneratorStep (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:15728:19)
at next (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:15742:29)
at anonymous (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:15747:14)
at tryCallTwo (address at InternalBytecode.js:1:1222)
at doResolve (address at InternalBytecode.js:1:2541)
at Promise (address at InternalBytecode.js:1:1318)
at anonymous (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:15739:25)
at apply (native)
at startMessaging (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:151109:37)
at fireInitialize (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:148804:87)
at readyFn (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:97128:77)
at ?anon_0 (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:100555:16)
at next (native)
at asyncGeneratorStep (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:15728:19)
at _next (http://localhost:8081/index.bundle//&platform=android&dev=true&lazy=true&minify=false&app=com.egerp.bellagio&modulesOnly=false&runModule=true&excludeSource=true&sourcePaths=url-server:15742:29)
at tryCallOne (address at InternalBytecode.js:1:1180)
at anonymous (address at InternalBytecode.js:1:1874)

Describe your issue here

As you can see the messaging api is asking me to do firebase.initializeApp, when It shouldn't.

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

---

Project Files

Javascript

Click To Expand

package.json:

{
  "name": "Bellagio",
  "version": "1.0.0",
  "private": true,
  "scripts": {
    "android": "react-native run-android",
    "ios": "react-native run-ios",
    "lint": "eslint .",
    "start": "react-native start",
    "test": "jest"
  },
  "dependencies": {
    "@react-native-async-storage/async-storage": "^2.1.2",
    "@react-native-clipboard/clipboard": "^1.16.2",
    "@react-native-firebase/app": "10.5.0",
    "@react-native-firebase/messaging": "10.5.1",
    "@react-navigation/bottom-tabs": "^7.3.10",
    "@react-navigation/native": "6.0.8",
    "@react-navigation/native-stack": "6.9.7",
    "axios": "^1.9.0",
    "date-fns": "^4.1.0",
    "eslint-plugin-react-hooks": "^4.3.0",
    "expo-checkbox": "^4.0.1",
    "react": "19.0.0",
    "react-native": "0.78.2",
    "react-native-calendar-picker": "^8.0.5",
    "react-native-device-info": "^14.0.4",
    "react-native-dropdown-select-list": "^2.0.5",
    "react-native-image-crop-picker": "^0.42.0",
    "react-native-popup-menu": "0.16.1",
    "react-native-qrcode-svg": "^6.3.15",
    "react-native-restart": "^0.0.27",
    "react-native-safe-area-context": "^5.4.0",
    "react-native-screens": "^4.10.0",
    "react-native-super-grid": "^6.0.1",
    "react-native-svg": "^15.11.2",
    "react-native-vector-icons": "^10.2.0",
    "react-native-vision-camera": "^4.6.4"
  },
  "devDependencies": {
    "@babel/core": "^7.25.2",
    "@babel/preset-env": "^7.25.3",
    "@babel/runtime": "^7.25.0",
    "@react-native-community/cli": "15.0.1",
    "@react-native-community/cli-platform-android": "15.0.1",
    "@react-native-community/cli-platform-ios": "15.0.1",
    "@react-native/babel-preset": "0.78.2",
    "@react-native/eslint-config": "0.78.2",
    "@react-native/metro-config": "0.78.2",
    "@react-native/typescript-config": "0.78.2",
    "@types/jest": "^29.5.13",
    "@types/react": "^19.0.0",
    "@types/react-test-renderer": "^19.0.0",
    "eslint": "^8.19.0",
    "jest": "^29.6.3",
    "prettier": "2.8.8",
    "react-test-renderer": "19.0.0",
    "typescript": "5.0.4"
  },
  "engines": {
    "node": ">=18"
  }
}

firebase.json for react-native-firebase v6:

# N/A

iOS

Click To Expand

ios/Podfile:

• I'm not using Pods
• I'm using Pods and my Podfile looks like:

# Resolve react_native_pods.rb with node to allow for hoisting
require Pod::Executable.execute_command('node', ['-p',
  'require.resolve(
    "react-native/scripts/react_native_pods.rb",
    {paths: [process.argv[1]]},
  )', __dir__]).strip

platform :ios, min_ios_version_supported
prepare_react_native_project!

linkage = ENV['USE_FRAMEWORKS']
if linkage != nil
  Pod::UI.puts "Configuring Pod with #{linkage}ally linked Frameworks".green
  use_frameworks! :linkage => linkage.to_sym
end

target 'Bellagio' do

  # Firebase
  use_frameworks! :linkage => :static
  $RNFirebaseAsStaticFramework = true
  config = use_native_modules!

  #  Firebase
  pod 'FirebaseCore'
  pod 'FirebaseMessaging'

  use_react_native!(
    :path => config[:reactNativePath],
    # An absolute path to your application root.
    :app_path => "#{Pod::Config.instance.installation_root}/.."
  )

  post_install do |installer|
    # https://github.com/facebook/react-native/blob/main/packages/react-native/scripts/react_native_pods.rb#L197-L202
    react_native_post_install(
      installer,
      config[:reactNativePath],
      :mac_catalyst_enabled => false,
      # :ccache_enabled => true
    )
  end
end

AppDelegate.swift:

import UIKit
import React
import React_RCTAppDelegate
import ReactAppDependencyProvider
import FirebaseCore

@main
class AppDelegate: RCTAppDelegate {
  override func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
    self.moduleName = "Bellagio"
    self.dependencyProvider = RCTAppDependencyProvider()

    // Firebase initialization
    FirebaseApp.configure()
    if let app = FirebaseApp.app() {
      print("Firebase initialized successfully with app name: \(app.name)")
    } else {
      print("FirebaseApp configuration failed!")
    }

    // You can add your custom initial props in the dictionary below.
    // They will be passed down to the ViewController used by React Native.
    self.initialProps = [:]
    

    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }

  override func sourceURL(for bridge: RCTBridge) -> URL? {
    self.bundleURL()
  }

  override func bundleURL() -> URL? {
#if DEBUG
    RCTBundleURLProvider.sharedSettings().jsBundleURL(forBundleRoot: "index")
#else
    Bundle.main.url(forResource: "main", withExtension: "jsbundle")
#endif
  }
}

---

Android

Click To Expand

Have you converted to AndroidX?

• my application is an AndroidX application?
• I am using android/gradle.settings jetifier=true for Android compatibility?
• I am using the NPM package jetifier for react-native compatibility?

android/build.gradle:

buildscript {
    ext {
        buildToolsVersion = "35.0.0"
        minSdkVersion = 24
        compileSdkVersion = 35
        targetSdkVersion = 35
        ndkVersion = "27.1.12297006"
        kotlinVersion = "2.0.21"
    }
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath("com.android.tools.build:gradle")
        classpath("com.facebook.react:react-native-gradle-plugin")
        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin")
        classpath("com.google.gms:google-services:4.3.15")
    }
}

apply plugin: "com.facebook.react.rootproject"

android/app/build.gradle:

apply plugin: "com.android.application"
apply plugin: "org.jetbrains.kotlin.android"
apply plugin: "com.facebook.react"
apply plugin: 'com.google.gms.google-services' // Firebase

// ionIcons
// To customize the fonts being copied, use:
// project.ext.vectoricons = [
//    iconFontNames: [ 'MaterialIcons.ttf', 'EvilIcons.ttf' ] // Specify font files
// ]
apply from: file("../../node_modules/react-native-vector-icons/fonts.gradle")

/**
 * This is the configuration block to customize your React Native Android app.
 * By default you don't need to apply any configuration, just uncomment the lines you need.
 */
react {
    /* Folders */
    //   The root of your project, i.e. where "package.json" lives. Default is '../..'
    // root = file("../../")
    //   The folder where the react-native NPM package is. Default is ../../node_modules/react-native
    // reactNativeDir = file("../../node_modules/react-native")
    //   The folder where the react-native Codegen package is. Default is ../../node_modules/@react-native/codegen
    // codegenDir = file("../../node_modules/@react-native/codegen")
    //   The cli.js file which is the React Native CLI entrypoint. Default is ../../node_modules/react-native/cli.js
    // cliFile = file("../../node_modules/react-native/cli.js")

    /* Variants */
    //   The list of variants to that are debuggable. For those we're going to
    //   skip the bundling of the JS bundle and the assets. By default is just 'debug'.
    //   If you add flavors like lite, prod, etc. you'll have to list your debuggableVariants.
    // debuggableVariants = ["liteDebug", "prodDebug"]

    /* Bundling */
    //   A list containing the node command and its flags. Default is just 'node'.
    // nodeExecutableAndArgs = ["node"]
    //
    //   The command to run when bundling. By default is 'bundle'
    // bundleCommand = "ram-bundle"
    //
    //   The path to the CLI configuration file. Default is empty.
    // bundleConfig = file(../rn-cli.config.js)
    //
    //   The name of the generated asset file containing your JS bundle
    // bundleAssetName = "MyApplication.android.bundle"
    //
    //   The entry file for bundle generation. Default is 'index.android.js' or 'index.js'
    // entryFile = file("../js/MyApplication.android.js")
    //
    //   A list of extra flags to pass to the 'bundle' commands.
    //   See https://github.com/react-native-community/cli/blob/main/docs/commands.md#bundle
    // extraPackagerArgs = []

    /* Hermes Commands */
    //   The hermes compiler command to run. By default it is 'hermesc'
    // hermesCommand = "$rootDir/my-custom-hermesc/bin/hermesc"
    //
    //   The list of flags to pass to the Hermes compiler. By default is "-O", "-output-source-map"
    // hermesFlags = ["-O", "-output-source-map"]

    /* Autolinking */
    autolinkLibrariesWithApp()
}

/**
 * Set this to true to Run Proguard on Release builds to minify the Java bytecode.
 */
def enableProguardInReleaseBuilds = false

/**
 * The preferred build flavor of JavaScriptCore (JSC)
 *
 * For example, to use the international variant, you can use:
 * `def jscFlavor = io.github.react-native-community:jsc-android-intl:2026004.+`
 *
 * The international variant includes ICU i18n library and necessary data
 * allowing to use e.g. `Date.toLocaleString` and `String.localeCompare` that
 * give correct results when using with locales other than en-US. Note that
 * this variant is about 6MiB larger per architecture than default.
 */
def jscFlavor = 'io.github.react-native-community:jsc-android:2026004.+'

android {
    ndkVersion rootProject.ext.ndkVersion
    buildToolsVersion rootProject.ext.buildToolsVersion
    compileSdk rootProject.ext.compileSdkVersion

    namespace "com.bellagio"
    defaultConfig {
        applicationId "com.egerp.bellagio"
        minSdkVersion rootProject.ext.minSdkVersion
        targetSdkVersion rootProject.ext.targetSdkVersion
        versionCode 1
        versionName "1.0"
    }
    signingConfigs {
        debug {
            storeFile file('debug.keystore')
            storePassword 'android'
            keyAlias 'androiddebugkey'
            keyPassword 'android'
        }
    }
    buildTypes {
        debug {
            signingConfig signingConfigs.debug
        }
        release {
            // Caution! In production, you need to generate your own keystore file.
            // see https://reactnative.dev/docs/signed-apk-android.
            signingConfig signingConfigs.debug
            minifyEnabled enableProguardInReleaseBuilds
            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
        }
    }
}

dependencies {
    // The version of react-native is set by the React Native Gradle Plugin
    implementation("com.facebook.react:react-android")

    if (hermesEnabled.toBoolean()) {
        implementation("com.facebook.react:hermes-android")
    } else {
        implementation jscFlavor
    }
}

android/settings.gradle:

pluginManagement { includeBuild("../node_modules/@react-native/gradle-plugin") }
plugins { id("com.facebook.react.settings") }
extensions.configure(com.facebook.react.ReactSettingsExtension){ ex -> ex.autolinkLibrariesFromCommand() }
rootProject.name = 'Bellagio'
include ':app'
includeBuild('../node_modules/@react-native/gradle-plugin')

MainApplication.kt:

package com.bellagio

import android.app.Application
import com.facebook.react.PackageList
import com.facebook.react.ReactApplication
import com.facebook.react.ReactHost
import com.facebook.react.ReactNativeHost
import com.facebook.react.ReactPackage
import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.load
import com.facebook.react.defaults.DefaultReactHost.getDefaultReactHost
import com.facebook.react.defaults.DefaultReactNativeHost
import com.facebook.react.soloader.OpenSourceMergedSoMapping
import com.facebook.soloader.SoLoader


class MainApplication : Application(), ReactApplication {

  override val reactNativeHost: ReactNativeHost =
      object : DefaultReactNativeHost(this) {
        override fun getPackages(): List<ReactPackage> =
            PackageList(this).packages.apply {
              // Packages that cannot be autolinked yet can be added manually here, for example:
              // add(MyReactNativePackage())
            }

        override fun getJSMainModuleName(): String = "index"

        override fun getUseDeveloperSupport(): Boolean = BuildConfig.DEBUG

        override val isNewArchEnabled: Boolean = BuildConfig.IS_NEW_ARCHITECTURE_ENABLED
        override val isHermesEnabled: Boolean = BuildConfig.IS_HERMES_ENABLED
      }

  override val reactHost: ReactHost
    get() = getDefaultReactHost(applicationContext, reactNativeHost)

  override fun onCreate() {
    super.onCreate()
    SoLoader.init(this, OpenSourceMergedSoMapping)
    if (BuildConfig.IS_NEW_ARCHITECTURE_ENABLED) {
      // If you opted-in for the New Architecture, we load the native entry point for this app.
      load()
    }
  }
}

AndroidManifest.xml:

<manifest xmlns:android="http://schemas.android.com/apk/res/android">

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.VIBRATE"/>
    <!-- Include this only if you are planning to use the camera roll >
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /-->

 <queries>
    <package android:name="com.whatsapp.w4b" />
    <package android:name="com.whatsapp" />
    <intent>
      <action android:name="android.intent.action.VIEW" />
      <data android:scheme="https"/>
    </intent>
    <intent>
      <action android:name="android.intent.action.VIEW" />
      <data android:scheme="geo" />
    </intent>
    <intent>
      <action android:name="android.intent.action.VIEW" />
      <data android:scheme="tel" />
    </intent>
    <intent>
      <action android:name="android.intent.action.VIEW" />
      <data android:scheme="mailto" />
    </intent>
  </queries>


    <application
      android:name=".MainApplication"
      android:label="@string/app_name"
      android:icon="@mipmap/ic_launcher"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:allowBackup="false"
      android:theme="@style/AppTheme"
      android:supportsRtl="true">
      <activity
        android:name=".MainActivity"
        android:label="@string/app_name"
        android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|screenSize|smallestScreenSize|uiMode"
        android:launchMode="singleTask"
        android:windowSoftInputMode="adjustResize"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
      </activity>
    </application>
</manifest>

---

Environment

Click To Expand

react-native info output:

info Fetching system and libraries information...
System:
  OS: macOS 15.4.1
  CPU: (10) arm64 Apple M2 Pro
  Memory: 108.52 MB / 16.00 GB
  Shell:
    version: "5.9"
    path: /bin/zsh
Binaries:
  Node:
    version: 22.15.0
    path: ~/.nvm/versions/node/v22.15.0/bin/node
  Yarn:
    version: 1.22.22
    path: ~/.nvm/versions/node/v22.15.0/bin/yarn
  npm:
    version: 10.9.2
    path: ~/.nvm/versions/node/v22.15.0/bin/npm
  Watchman:
    version: 2025.04.14.00
    path: /opt/homebrew/bin/watchman
Managers:
  CocoaPods:
    version: 1.16.2
    path: /Users/saadalla/.rbenv/shims/pod
SDKs:
  iOS SDK:
    Platforms:
      - DriverKit 24.4
      - iOS 18.4
      - macOS 15.4
      - tvOS 18.4
      - visionOS 2.4
      - watchOS 11.4
  Android SDK: Not Found
IDEs:
  Android Studio: Not Found
  Xcode:
    version: 16.3/16E140
    path: /usr/bin/xcodebuild
Languages:
  Java:
    version: 17.0.15
    path: /usr/bin/javac
  Ruby:
    version: 2.7.5
    path: /Users/saadalla/.rbenv/shims/ruby
npmPackages:
  "@react-native-community/cli":
    installed: 15.0.1
    wanted: 15.0.1
  react:
    installed: 19.0.0
    wanted: 19.0.0
  react-native:
    installed: 0.78.2
    wanted: 0.78.2
  react-native-macos: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: true
  newArchEnabled: true

• Platform that you're experiencing the issue on:
  • iOS
  • Android
  • iOS but have not tested behavior on Android
  • Android but have not tested behavior on iOS
  • Both
• react-native-firebase version you're using that has this issue:
  • 10.5.0
• Firebase module(s) you're using that has the issue:
  • "@react-native-firebase/app": "10.5.0",
  • "@react-native-firebase/messaging": "10.5.1",
• Are you using TypeScript?
  • Not really

---

• 👉 Check out React Native Firebase and Invertase on Twitter for updates on the library.

[saadalla]

The Google file is in its place for iOS

[saadalla]

and also the json for android

[sabuhiteymurov]

I'm also encountering this issue, after upgrading to Expo SDK 53 and react-native 0.79.2.

[kevinhylant]

I am also getting the same issue upgrading to Expo SDK 53. I tried using the latest tag 22.1.0 and the build phase is failing on the following

/AppDelegate.swift:46:17)

  44 |   ) -> Bool {
  45 | // @generated begin @react-native-firebase/auth-openURL - expo prebuild (DO NOT MODIFY)
> 46 |     if url.host.toLowerCase() == "firebaseauth" {
     |                 ^ value of type 'String?' has no member 'toLowerCase'
  47 |       // invocations for Firebase Auth are handled elsewhere and should not be forwarded to Expo Router
  48 |       return false
  49 |     }

I'm not 100% sure if this is related, but in the commits that went into the latest release, I'm seeing this line added

v22.0.0...v22.1.0#diff-dafc21a535c6a4d7a3a569d3d8d879ad43fa669cdb77ee700b5eae2407f45f0fR158

[lazharichir]

I am also getting the same issue upgrading to Expo SDK 53. I tried using the latest tag 22.1.0 and the build phase is failing on the following

/AppDelegate.swift:46:17)

  44 |   ) -> Bool {
  45 | // @generated begin @react-native-firebase/auth-openURL - expo prebuild (DO NOT MODIFY)
> 46 |     if url.host.toLowerCase() == "firebaseauth" {
     |                 ^ value of type 'String?' has no member 'toLowerCase'
  47 |       // invocations for Firebase Auth are handled elsewhere and should not be forwarded to Expo Router
  48 |       return false
  49 |     }

I'm not 100% sure if this is related, but in the commits that went into the latest release, I'm seeing this line added

v22.0.0...v22.1.0#diff-dafc21a535c6a4d7a3a569d3d8d879ad43fa669cdb77ee700b5eae2407f45f0fR158

Same issue on my end but this PR #8507 fixes it but it's not pushed to NPM sadly...

[saadalla]

I finally got it to work.
I had to migrate to the latest version:
"@react-native-firebase/app": "^22.1.0",
"@react-native-firebase/messaging": "^22.1.0",

but doing that is a bit messy:

• [parent project folder] first remove the old versions from the packaging, I was using yarn remove
• [iOS folder] then go into the Podfile.lock and remove any reference to firebase and google
• then go pod install and make sure, it says all these modules are removed
• [parent project folder] go back and install the latest /app & /messaging
• [iOS folder] then go pod install and make sure, it says all RN, google modules are added

now i get the messaging token as expected, but also a nasty warning message:

This method is deprecated (as well as all React Native Firebase namespaced API) and will be removed in the next major release as part of move to match Firebase Web modular SDK API. Please see migration guide for more details: https://rnfirebase.io/migrating-to-v22 Please use getApp() instead.

[kevinhylant]

@saadalla I think this is still an issue for Expo apps at least until #8507 is released? I just did a fully-clean build (wiping ios, android, yarn.lock, everything) and am still getting the issue I mentioned above.

[saadalla]

I will keep the issue open for you guys, hope somebody from dev would help.

[TorenIvan]

Hello,

I ran into this as well and managed to resolve it. Here’s what worked for me:

📦 Upgraded Packages

First, I upgraded my Firebase packages to the latest versions:

"@react-native-firebase/app": "^22.1.0",
"@react-native-firebase/messaging": "^22.1.0"

🔄 Refactored Code

Then, I made a few small adjustments to the code:

import { getApp } from '@react-native-firebase/app';
import {
  getInitialNotification,
  getMessaging,
  onMessage,
  onNotificationOpenedApp,
  isDeviceRegisteredForRemoteMessages,
  registerDeviceForRemoteMessages,
  requestPermission,
  AuthorizationStatus,
  getToken,
} from '@react-native-firebase/messaging';


// Initialize the Firebase app instance
const firebaseApp = getApp();
const messaging = getMessaging(firebaseApp);

/**
** Now you can call whatever messaging method you want; by passing the messaging instance
** Examples of calling your methods by passing the messaging instance
*/

// Fetch the initial notification (if any)
getInitialNotification(messaging).then((notification) => {
  if (notification) {
    console.log('Initial notification:', notification);
  }
});

// Set up a message listener for foreground messages
const notificationListener = onMessage(messaging, (message) => {
  console.log('Foreground message:', message);
});

// Example of getting the Firebase token
if (!isDeviceRegisteredForRemoteMessages(messaging)) {
  await registerDeviceForRemoteMessages(messaging);
}
const authStatus = await requestPermission(messaging);
const enabled =
  authStatus === AuthorizationStatus.AUTHORIZED ||
  authStatus === AuthorizationStatus.PROVISIONAL;
if (!enabled) return;
const firebaseToken = await getToken(messaging);
console.log('Firebase Token:', firebaseToken);

✅ Key Changes

• Use the getApp() function to retrieve the Firebase app instance.
• Pass the app instance to getMessaging() to get the messaging instance.
• Use the new namespaced API.

Hope this helps!

[raji9867]

Same issue i am facing when Upgrading in Expo when using react native firebase

[leonardo-weber]

Facing the same issue here, upgraded to react-native 0.76.0 and can't access the app because it keeps telling me that Firebase app has not been initialized.

The only way i found to "fix" this problem is to set newArchEnabled to false. Then it works