gistfile1.txt

@AppScope
@Component
interface AppComponent {
    val userComponentFactory: UserComponent.Factory

    @Component.Factory
    interface Factory {
        fun create(@BindsInstance context: Context): AppComponent
    }
}

@UserScope
@Subcomponent
interface UserComponent {
    val parent: AppComponent
    val subscriberComponentFactory: SubscriberComponent.Factory

    @Subcomponent.Factory
    interface Factory {
        fun create(@BindsInstance userId: UserId): UserComponent
    }
}

@SubscriberScope
@Subcomponent
interface SubscriberComponent {
    val what: UserComponent .... makes compile Stackoverflow

    @Subcomponent.Factory
    interface Factory {
        fun create(@BindsInstance subscriberId: SubscriberId): SubscriberComponent
    }
}