Kotlin Multiplatform iOS Interop

JokeClient.kt

interface JokeClient {

    fun getRandomJoke(
        category: JokeCategory? = null,
        completionHandler: CompletionHandler<Joke?>
    ): NativeCancellable

    fun getJokeCategories(completionHandler: CompletionHandler<List<JokeCategory>?>): NativeCancellable

    fun findJoke(
        query: String,
        completionHandler: CompletionHandler<JokeSearchResult?>
    ): NativeCancellable
}

internal class JokeClientImpl(private val apiClient: ApiClient) :
    JokeClient {

    init {
        freeze()
    }

    override fun getRandomJoke(
        category: JokeCategory?,
        completionHandler: CompletionHandler<Joke?>
    ) =
        iosScope.withNativeCompletionHandler(completionHandler) {
            apiClient.getRandomJoke(category)
        }

    override fun getJokeCategories(completionHandler: CompletionHandler<List<JokeCategory>?>) =
        iosScope.withNativeCompletionHandler(completionHandler) {
            apiClient.getJokeCategories()
        }

    override fun findJoke(query: String, completionHandler: CompletionHandler<JokeSearchResult?>) =
        iosScope.withNativeCompletionHandler(completionHandler) {
            apiClient.findJoke(query)
        }

}