fun main() {
    Koject.start()

    val controller = inject<Controller>()
}

@Singleton
@Provides
class Api

@Singleton
@Provides
fun provideDB(): DB {
    return DB.create()
}

@Binds
@Singleton
@Provides
class RepositoryImpl(
    private val api: Api,
    private val db: DB,
): Repository

interface Repository

@Provides
class Controller(
    private val repository: Repository
)