Hi all. We want to try using KMP to modify an exis...

# multiplatform

[Gleb]

Hi all.
We want to try using KMP to modify an existing Kotlin library to be consumed by multiple targets. It will be mainly used by some client applications (such as Android and JS: React Native, browser)
1. Is there any obvious problems that may arise? The code in current codebase is (somewhat) platform agnostic: only one library is JVM
2. First thing that I noticed is JSExport not allowed on suspend functions, does it mean our public API must be split between JVM and JS? (I.e. I have suspend foo(): String in MyClass. I would like to expose it to the developer using my library. I will need to create expect MyClassAPI that has different iml for JS and JVM: fooAPI(): Promise<String> and suspend fooAPI(): String . Both calling foo internally.
We are still and research phase. Alternative would be to re-implement kotlin library in typescript, but I would like to hear from people with experience opinion on the topic.
Thanks!

[Evegenii Khokhlov]

about second question: I believe that API shouldn’t be split, it is perfectly fine that your multiplatform library API has suspend functions. I suggest creating additional wrappers with JSExport in js source set for yours JS target and don’t use actual / expect for this task

[Gleb]

The problem is that I have an expect class with suspend function which I want to export. Currently, I can't really do that because of JSExport restrictions.