StoreKit2 support for Apple devices

[AustinBenoit]

Description

Provide details of the change, and generalize the change in the PR title above.

StoreKit2 support for Apple devices. Make the LogAppleTransaction a no-op for Android and iOS

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Testing

Describe how you've tested these changes. Link any manually triggered Integration tests or CPP binary SDK Packaging Github Action workflows, if applicable.

Added in a new integration test and steps to manually test the transactions.

Performed the manual testing as describe:

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Type of Change

Place an x the applicable box:

• Bug fix. Add the issue # below if applicable.
• New feature. A non-breaking change which adds functionality.
• Other, such as a build process or documentation change.

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Notes

• Bug fixes and feature changes require an update to the Release Notes section of release_build_files/readme.md.
• Read the contribution guidelines CONTRIBUTING.md.
• Changes to the public API require an internal API review. If you'd like to help us make Firebase APIs better, please propose your change in a feature request so that we can discuss it together.

[gemini-code-assist]

Code Review

This pull request introduces support for logging Apple StoreKit 2 transactions on iOS by adding a new LogAppleTransaction API, including a Swift bridge for native interaction and updated CMake configurations to support Swift compilation. Several issues were identified in the CMake configuration, including a regression for Windows builds, incorrect platform detection logic for tvOS, non-portable header inclusion, and reliance on Xcode-specific variables that break other generators like Ninja.

[github-actions]

Integration test with FLAKINESS (succeeded after retry)

Requested by @AustinBenoit on commit c5edd5e
Last updated: Tue Apr 21 14:27 PDT 2026
View integration test log & download artifacts

Failures	Configs
firestore	[TEST] [FLAKINESS] [Android] [1/3 os: ubuntu] [1/4 android_device: emulator_ftl_target] (1 failed tests)   FirestoreTest.TestQuerySnapshotEventsForChange [TEST] [FLAKINESS] [Android] [1/3 os: windows] [1/4 android_device: emulator_ftl_latest] (1 failed tests)   CRASH/TIMEOUT

Add flaky tests to go/fpl-cpp-flake-tracker

[AustinBenoit]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces the LogAppleTransaction API to Firebase Analytics, enabling the logging of StoreKit 2 transactions on iOS and tvOS. The implementation includes a Swift-based verification layer using AppleTransactionWorker and bridges it to the C++ SDK. Additionally, the PR incorporates critical workarounds for Xcode 15+ compatibility on older iOS versions (15 and 16), specifically addressing potential crashes related to Swift Concurrency and __libcpp_verbose_abort. Build system updates across multiple modules ensure proper Swift/C++ interop and framework linking. Review feedback suggests addressing a potential memory leak in the iOS asynchronous completion handling and improving the portability of the CMake configuration by removing hardcoded framework paths.

[gemini-code-assist]

The SafeFutureHandle<void> is allocated on the heap using new, but there is a risk of a memory leak if the verifyWithTransactionId completion block is never executed. While the current Swift implementation appears to always call the completion handler, it is safer to use a mechanism that ensures cleanup even if the asynchronous task fails to complete or if the app state changes unexpectedly.

[gemini-code-assist]

The paths for FirebaseAnalytics.xcframework and GoogleAppMeasurement.xcframework are hardcoded based on a specific CocoaPods directory structure. This may cause build failures if the environment uses a different version of the Firebase Apple SDK or a different dependency management setup. Consider using CMake variables or a more flexible discovery mechanism to locate these frameworks.

[a-maurice]

Does this need the check for FIREBASE_XCODE_TARGET_FORMAT? I feel like it would need the analytics headers for all platforms.