register firebase hooks

---

title: "How do I register Firebase hooks at app startup?" reviewed_by: date: 2026-06 version: 3.5.x

How do I register Firebase hooks at app startup?

Quick start (minimal MWE)

import org.koin.core.context.startKoin
import com.mobilebytelabs.kmptoolkit.observe.koin.observeKoinModule
import com.mobilebytelabs.kmptoolkit.observe.koin.FirebaseCrashlyticsAttributionHook
import com.mobilebytelabs.kmptoolkit.observe.koin.FirebaseAnalyticsHealthHook

fun bootKoin() {
    startKoin {
        modules(
            observeKoinModule(
                hooks = listOf(
                    FirebaseCrashlyticsAttributionHook(),
                    FirebaseAnalyticsHealthHook(),
                ),
            ),
        )
    }
}

Caveats / per-platform notes

• The hooks run inside cmp-* libraries' notifyInit paths — they are no-ops until at least one cmp-* module's init path executes.
• iOS: Firebase SDK must already be initialized (FirebaseApp.configure()) in your AppDelegate before bootKoin() runs.
• Android: Firebase auto-initializes via FirebaseInitProvider; no extra call needed.
• JVM Desktop / wasmJs: Firebase Crashlytics is not available; the attribution hook is a no-op on those platforms.

Related

• Module: cmp-observe-koin + cmp-observe
• See also: Issue a consumer anon-key for library events
• See also: Attribute a crash to a specific cmp-* library