Web workers / shared workers in a browser

[gedw99]

Anyone know if there is support to run the wasm in web / shared workers in the browser ?

It’s good for async things that need to call a server and not block the main UI thread ..

Then it’s sort of natural to ask if non browser environments also have the same async aspects.

[mhmd-azeez]

Hi, we are working on a new JS SDK that works in Browser, Node, Deno, and Bun environments. But in the meantime, you should be able to use this:
https://extism.org/docs/integrate-into-your-codebase/browser-runtime-sdk

[gedw99]

That makes a lot of sense.

i started using bun. So then the web post message ( or shared array ) for passing data between host and workers can us the same mechanism.

[gedw99]

I am hoping the code written to be compiled to wasm can just use stdio. It’s universal .

[mhmd-azeez]

@gedw99 once we make the new JS SDK public I'll ping you, would appreciate it if you can try it out and let us know if you have any feedback for your use case

[gedw99]

That would be great .

[mhmd-azeez]

@gedw99 the new JS SDK uses workers to make sure the main thread is not blocked, you can try it out here: https://github.com/extism/js-sdk

[gedw99]

Wow . My lucky day. @mhmd-azeez

Very kind of you to notify me of this.

i will try out a prototype.

question: so can I compile golang or rust to wasm and use this js ssk to run it in a browser ?

[mhmd-azeez]

Yes! In fact, our Playground uses that same SDK now: https://playground.extism.org/

For developing wasm modules (in Go, Rust, and a number of other languages), please take a look at our PDKs:
https://extism.org/docs/quickstart/plugin-quickstart