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Koin

MediatorK works naturally with Koin for dependency injection in KMP, Android, and iOS projects.

Setup​

Add Koin alongside MediatorK (see Installation for the MediatorK coordinate):

// build.gradle.kts
dependencies {
    implementation("io.insert-koin:koin-core:3.5.6")
    // Android
    implementation("io.insert-koin:koin-android:3.5.6")
}

Define a Koin module​

Declare each registrar and behavior as its own binding, then use getAll<T>() to collect them automatically — no manual list construction needed:

val mediatorModule = module {

    // Registrars
    single<MediatorRegistrar> { UserRegistrar(get()) }
    single<MediatorRegistrar> { OrderRegistrar(get()) }

    // Pipeline behaviors
    single<PipelineBehavior> { LoggingBehavior() }
    single<PipelineBehavior> { ValidationBehavior(getAll()) }

    // Mediator singleton — getAll<T>() collects every binding of that type
    single {
        val registrars = getAll<MediatorRegistrar>()
        MediatorFactory.create(
            registrars = registrars,
            pipelineBehaviors = getAll<PipelineBehavior>(),
            notificationPublisher = ParallelNotificationPublisher(),
        )
    }
}

getAll<T>() resolves every Koin binding for the given type, so adding a new registrar or behavior is a one-line change — the mediator picks it up automatically.

Android — start Koin in Application​

class MyApp : Application() {
    override fun onCreate() {
        super.onCreate()
        startKoin {
            androidContext(this@MyApp)
            modules(mediatorModule, repositoryModule)
        }
    }
}

Next​

→ API Reference