hi folks im really excited about the potential for...

# webassembly

[Julian Gautier]

hi folks im really excited about the potential for kotlin + webassembly. I have been able to compile to wasm using the new beta wasm target but it looks like it always targets javascript as a host environment. Are there any plans to support standalone wasm? Any tips on where I could get started to help with this effort? thank you!

[bashor]

Well, main blocker now is lack of GC proposal support in standalone VMs.
Aside of that even now you can take generated wasm without js and use it.

[bashor]

btw it’s not “beta” 🙂

[bashor]

Any tips on where I could get started to help with this effort?

Any help with GC proposal support in standalone VMs are welcome:
• with implementing parts
• file/vote issue to standalone VMs

[Julian Gautier]

When I inspected the js host file for the wasm file there were several functions that were provided by the JS such as kotlin.wasm.internal.stringLength_-66337765, kotlin.wasm.internal.isNullish_-370876551" etc. I dont think we can expect the other standalone vms to provide those functions?

[Julian Gautier]

or is there a way to not have the wasm file depend on those?

[bashor]

or is there a way to not have the wasm file depend on those?

No, for now.

[bashor]

The most of these imports required for interop with JS, so if you don’t use interop you can provide some/dummy implementations for them.

[bashor]

Usually imports could be provided by users/embeders

[Julian Gautier]

cool I'll look into providing dummy implementations. thank you!

[bashor]

welcome, please share your results then

[bashor]

btw, what is your usecase? Where and how would you like to use kotlin/wasm?

[bashor]

what is your target vm?

[Julian Gautier]

I wanted to try building an envory proxy plugin with kotlin

[Julian Gautier]

https://github.com/proxy-wasm/spec

[Julian Gautier]

envoy currently supports WAVM or V8 for the host

[andylamax]

what did you mean by

btw its not "beta"

???

[Svyatoslav Kuzmich [JB]]

We haven’t officially “released” anything yet. What gets published is a development snapshot, which can be considered as pre-alpha and pre-beta.

[andylamax]

ooooh I see. Thanks