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Hello guys, friday afternoon question. I'm building and iOS app with kotlin multiplatform, coroutines, ktor and kotlinx.serialization and I'm having a problem with serializing huge json files (like mbs huge).

As I'm using ktor I have to use coroutines to handle the `suspend` functions, this means that I'm restricted to using the UI dispatcher (afaik there is no IO dispatcher for mpp projects?). Everything worked just fine with small files, but when I try to parse this huge json my app freezes. It happens with any CPU-intense operation really.

I've figured out that I could use `concurrent.Worker` for CPU-intense operations, as it doesn't block my UI. But I just cannot figure out how to join coroutines and workers, things just explode when I try to launch either one inside the other. Is there a way to get a json file from ktor, inside a coroutine, and then process it with workers?

Do you guys have any recommendations? Any ideas for a direction which I could take?

Have you seen <https://github.com/JetBrains/kotlin-native/blob/745b99a61eacf570fcc280991bdc4c5225e5cf53/samples/objc/src/objcMain/kotlin/Window.kt#L112> which parses JSON in background thread?