JavaScript support

Any plan about to include JavaScript specifications into the library?

It could be great to make this library as a reference.

import org.w3c.fetch.Response
import kotlin.coroutines.experimental.*
import kotlin.js.Promise

external fun fetch(url: String): Promise<Response> = definedExternally

suspend fun <T> Promise<T>.await(): T = suspendCoroutine {
    then(it::resume).catch(it::resumeWithException)
}

fun <T> async(block: suspend () -> T) = Promise<T> { resolve, reject ->
        block.startCoroutine(completion = object : Continuation<T> {
            override val context: CoroutineContext = EmptyCoroutineContext

            override fun resume(value: T) {
                resolve(value)
            }

            override fun resumeWithException(exception: Throwable) {
                reject(exception)
            }
        })
    }
}


fun asyncTest() = async {
    val value = fetch("./test.txt").then(Response::text).await()

    println(value)
}

[elizarov]

Yes. There is a plan to have a subset of kotlix-coroutines-core module available in JS and to provide additional utility functions for JS Promise.

[elizarov]

Released in version 0.21