Firebase Auth Not working with Share Extension

[tobenna-wes-re]

Description

I’m trying to reuse Firebase Authentication inside an iOS share extension. The host app builds fine, but as soon as I add pod 'FirebaseAuth' to the share-extension target and import it from Swift, the extension target fails to compile. Xcode errors all point into the generated FirebaseAuth-Swift.h:

FirebaseAuth-Swift.h:72:9: No type or protocol named 'FIRComponentLifecycleMaintainer'
FirebaseAuth-Swift.h:210:16: No type or protocol named 'SFSafariViewControllerDelegate'
FirebaseAuth-Swift.h:211:16: Cannot find protocol declaration for 'WKNavigationActionDelegate'; did you mean 'UINavigationBarDelegate'?
FirebaseAuth-Swift.h:213:12: Unknown type name 'WKNavigationActionPolicy'; did you mean 'WKNavigationAction'?

It looks as if the Swift header that ships with FirebaseAuth assumes that FirebaseCoreExtension/FIRComponent.h, SafariServices, and WebKit have already been imported, but that’s not the case in a fresh share-extension target. The result is that we can’t compile the extension at all, even though FirebaseAuth is linked.

Expected: importing FirebaseAuth in an extension should just work, or the module should re-export the headers it needs.
Actual: the build fails in FirebaseAuth-Swift.h because dependencies are missing.

Reproducing the issue

Create a basic iOS app project and add a Share Extension target.
Use CocoaPods with static frameworks (our Podfile contains use_frameworks! :linkage => :static because we’re on React Native).
In the share-extension target block add:
pod 'FirebaseCore'
pod 'FirebaseCoreExtension'
pod 'FirebaseAuth'
Run pod install, open the workspace, build the share-extension target.
Observe the compiler errors listed above coming from FirebaseAuth-Swift.h.
If you add the bridging header shown earlier, the extension builds — but that shouldn’t be necessary; the module should bring in its own dependencies.

Firebase SDK Version

12.1.0

Xcode Version

16.0

Installation Method

CocoaPods

Firebase Product(s)

Authentication

Targeted Platforms

iOS

Relevant Log Output

FirebaseAuth-Swift.h:72:9: No type or protocol named 'FIRComponentLifecycleMaintainer'
FirebaseAuth-Swift.h:210:16: No type or protocol named 'SFSafariViewControllerDelegate'
FirebaseAuth-Swift.h:211:16: Cannot find protocol declaration for 'WKNavigationActionDelegate'; did you mean 'UINavigationBarDelegate'?
FirebaseAuth-Swift.h:213:12: Unknown type name 'WKNavigationActionPolicy'; did you mean 'WKNavigationAction'?

If using Swift Package Manager, the project's Package.resolved

Expand Package.resolved snippet

Replace this line with the contents of your Package.resolved.

If using CocoaPods, the project's Podfile.lock

pod.txt

Expand Podfile.lock snippet

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[rizafran]

Thanks for reporting, @tobenna-wes-re. Have you tried the following:

• Adding $RNFirebaseAsStaticFramework = true as indicated here, or
• Trying the solution provided on this issue
• Running the pod install --repo-update then clean build folder in Xcode

[tobenna-wes-re]

Yes, @rizafran, this did not solve the issue. Also for the extension I am not using react native, only for the main app.

pod 'FirebaseCore'
pod 'FirebaseCoreExtension'

work fine but when i add
pod 'FirebaseAuth'

i get this issue. My understanding from the logs was that SFSafariViewControllerDelegate,... is not supported in the share extension

[rizafran]

Thanks for the info, @tobenna-wes-re. I tried to reproduce the issue on native iOS, but I wasn't able to get the same error. Did you also add the Firebase SDK to your main app? You may also try to check on this sample app to serve as your baseline for troubleshooting.

[tobenna-wes-re]

Thanks for attempting. The sample app does not have FirebaseAuth Enabled in the share extension. I think share extension does not support Safari Services and Webkit.
https://github.com/charlotteliang/firebase-ios-app-extensions/blob/master/Sparky/ShareExtension/ShareViewController.swift#L15-L17
My main app is ReactNative btw

and this is needed by the firebase Auth SDK

this is what my pods file looks like

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

node_require('react-native/scripts/react_native_pods.rb')
node_require('react-native-permissions/scripts/setup.rb')

$RNFirebaseAsStaticFramework = true

platform :ios, "17.2"
prepare_react_native_project!
use_frameworks! :linkage => :static

setup_permissions([
  # 'AppTrackingTransparency',
  # 'Bluetooth',
  # 'Calendars',
  # 'CalendarsWriteOnly',
  # 'Camera',
  # 'Contacts',
  # 'FaceID',
  'LocationAccuracy',
  'LocationAlways',
  'LocationWhenInUse',
  # 'MediaLibrary',
  # 'Microphone',
  # 'Motion',
  'Notifications',
  'PhotoLibrary',
  # 'Reminders',
  # 'Siri',
  # 'SpeechRecognition',
  # 'StoreKit',
])



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 'MainAppTarget' do
  
  # use_frameworks! :linkage => :static
  pod 'FirebaseAuth'
  pod 'FirebaseCore'
  pod 'FirebaseFirestore'
  pod 'FirebaseAppCheck'
  pod 'GoogleUtilities'
  pod 'FirebaseCoreExtension'

  config = use_native_modules!

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

  $RNMapboxMapsVersion = '= 11.7.0'
  
  pre_install do |installer|
    $RNMapboxMaps.pre_install(installer)
  end
  
  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
    )

    $RNMapboxMaps.post_install(installer)

  end

  target 'MainAppTargetDev' do
    inherit! :complete
    # Pods for testing
  end

end

target 'MainAppTargetNotificationDev' do
  use_frameworks! :linkage => :static
  pod 'Firebase/Messaging'
  pod 'GoogleUtilities'
end

target 'MainAppTargetNotificationProd' do
  use_frameworks! :linkage => :static
  pod 'Firebase/Messaging'
  pod 'GoogleUtilities'
end


target 'MainAppTargetShareDev' do
  use_frameworks! :linkage => :static
  pod 'FirebaseAuth'
  pod 'FirebaseCore'
  pod 'FirebaseCoreExtension'
  pod 'FirebaseFunctions'
end