firebase-plugin-appdelegate

🔌 A custom Expo config plugin that automatically injects FirebaseApp.configure() into your iOS AppDelegate.swift or AppDelegate.m, during prebuild, enabling Firebase setup without manual native code editing.

---

🚀 Features

• ✅ Supports both Swift (AppDelegate.swift) and Objective-C (AppDelegate.m)
• ✅ Adds missing import FirebaseCore / #import <FirebaseCore/FirebaseCore.h>
• ✅ Injects FirebaseApp.configure() or [FIRApp configure]; into didFinishLaunchingWithOptions
• ✅ Gracefully creates a fallback AppDelegate.swift if none exists
• ✅ Logs helpful output without breaking your build
• ✅ Compatible with expo prebuild, expo run:ios, and eas build

---

📦 Installation

📋 Requirements This plugin requires the following package to be installed in your project: @expo/config-plugins

GoogleService-Info.plist file in your project directory, e.g., ios/appName/GoogleService-Info.plist.

📋 Installation Place the plugin in your project directory, e.g., plugins/firebase-plugin-appdelegate.js.

Then update expo plugins array in your app.config.js:

module.exports = {
  expo: {
    name: "YourApp",
    slug: "your-app",
    plugins: [
      // ✅ Register the plugin
      "./plugins/firebase-plugin-appdelegate"

      // ⚠️ Avoid react-native-firebase plugins here — handled manually
      // Remove or comment out the following if present:
      // "@react-native-firebase/app",
      // "@react-native-firebase/auth",
      // "@react-native-firebase/firestore",
      // "@react-native-firebase/storage",
    ]
  }
};

🙏 Credits

Originally written by Ryan Baier as an Expo config plugin to automate Firebase setup in Swift and Objective-C iOS projects.

This plugin was built with guidance on:

• Expo's config plugin system
• Native module injection strategies
• Firebase iOS initialization patterns