Explore Kotlin/Wasm support using WASI

[sdeleuze]

This is obviously still the early days of Kotlin/Wasm which is not yet really usable, but be aware I would like to begin exploring Kotlin/Wasm support using WASI. I am initially experimenting on https://github.com/sdeleuze/kowasm/ side (see kowasm/kowasm#8 related issue) and then later would like to contribute a PR here when Kotlin/Wasm will be more mature and WASI supported out of the box (may take some time).

Any thoughts from Okio team on a potential future WASI support? Is there anything preventing me creating a Kotlin/Wasm + WASI counterpart of https://github.com/square/okio/tree/master/okio-nodefilesystem in an external repository? Any guidance appreciated.

[swankjesse]

We’re eager to support WASM as soon as we can. If you’d like to explore that space now, please do!

[sdeleuze]

Glad to hear you are interested, I will give it a try and let you know how it goes.

[dbaroncelli]

@sdeleuze any news on this, now that Kotlin/Wasm support has started in Kotlin 1.8.20 ?

[sdeleuze]

I am currently progressing on exposing a WASI filesystem API close to Preview2 drafts to expose the low level Preview1 ABI, and the next step will be to add Okio Wasm support, potentially on KoWasm side initially.

[swankjesse]

Build the WASM target here: #1289

Still needs a WASI FileSystem.

[swankjesse]

This is done! We’ll need to keep tracking the WASI API as it changes.