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Hey folks, I'm rather new to Kotlin JS, trying to import `async` functions into Kotlin, some pointers would be greatly appreciated because I'm early missing something (<https://stackoverflow.com/questions/71678834/how-do-i-import-and-use-an-async-js-function-in-kotlin-js>)

`suspend` keyword won't work in `external declaration`. I think you want `SignUp` function to return a `Promise&lt;String&gt;`

`external object` are considered as pure JS objects and JS doesn't have `suspend`.

oh right, well that would explain :smile:

`async` in JS is just a syntactic sugar for a function returning Promise to unwrap it to callbacks. So `async function myFun(): Promise&lt;String&gt;` would be represented in kotlin as `external fun myFun(): kotlin.js.Promise&lt;String&gt;`

From there, you can use coroutines runtime lib utilities to convert the promises to suspend scopes and other coroutine builders.

Right, <@UL1A5BA2X> that's kind of what I was trying and indeed now I get objects instead of Promises back (after adding `.await()` in my coroutine. But somehow I can't unpack the object so I'm wondering if it's translated correctly

Alright, turns out suspend works just find <@UQM8EHYP7>. I indeed had to wrap my external into Promise&lt;&gt; and use .await() inside a coroutine. TY <@UL1A5BA2X>!

having `suspend` and return a `Promise` would not make sense. `suspend` might not be doing anything since you are using `await` inside `coroutine`

You might've seen this already, but I've covered most of the things one needs to know about wrapping js in kotlin <https://dev.to/mpetuska/js-in-kotlinjs-c4g|here>

You referred me to it last time I had an issue. I'll go back to it haha. Thnaks!

Right, I got it mixed up. Indeed <@UQM8EHYP7> suspend doesn't make sense any more here

It didn't have async section last time. Just added it now for completeness :slightly_smiling_face:

<@UL1A5BA2X>  Could you add the imports used in the Kotlin examples of your post?
I find it extremely helpful to have these :grin:

Hmm, most of the snippets only use global APIs, but I'll review and add imports where appropriate (surely skipping an import of kotlin.String is no big deal) :grinning:

For sure, but for example <https://kotlinlang.org/api/kotlinx.coroutines/kotlinx-coroutines-play-services/kotlinx.coroutines.tasks/await.html|await from kotlinx> would be nice to have the imports for :v: