are there any versions of

kotlinx-collections-immutable

right now that work for Wasm?

There is

0.4-wasm0

in https://maven.pkg.jetbrains.space/kotlin/p/wasm/experimental It was published for 1.9.0, but I’d expect it’s working with 1.9.20*.

ah, thanks....thought I'd looked for it there but clearly not 😃