The Firebase Kotlin SDK is a Kotlin-first SDK for Firebase. It's API is similar to the Firebase Android SDK Kotlin Extensions but also supports multiplatform projects, enabling you to use Firebase directly from your common source targeting iOS, Android or JS.

Shared library observability hook interface + 3 default Google/Firebase hook implementations (Crashlytics attribution / Analytics health / Performance traces) for Kotlin Multiplatform. Per RULE-LIB-OBSERVABILITY-SURFACE-001.