[binyu]

Very cool work.

What approach are you using? Been working on a similar in-browser node runtime based on Rust/WASM kernel + Service-Worker HTTP intercept + CJS→ESM transform.

Feature wise, does this compare to StackBlitz webcontainers?

[le_chuck]

I had previous experience with QuickJS - respectively using the rquickjs crate (awesome project) - so my approach was first asserting whether it was possible to run a Wasmtime binary that both executes the JS code and handles HTTP requests and responses.

Then, the second part which was really important to me, was figuring out if I could find a way to embed the developer's JS code within the worker without requiring them to install Cargo. (thanks to Wizer it's possible, love it).

Once I had those two, the rest was basically execution (not saying it was straightforward though ;)

I was also a bit lucky: at the same time as I was developing it, Rolldown announced the version 1 of their standalone crate. So it was the perfect timing to use it as well.

As for StackBlitz WebContainers, I actually don't know much about it. They run in the browser as I understand, so fundamentally different but, feature wise I'm sure this project is way more mature and therefore offers way more features.

[binyu]

Awesome, thanks for detailing the thought flow and choices that led you here. I chose not to go the QuickJS route for performance reasons but I think it's a solid choice depending on the use case.

> They run in the browser as I understand, so fundamentally different

Yes, runs entirely in the browser, while this is a hosted product. StackBlitz technology is really good but it is closed source.

[le_chuck]

Yeah I was surprised by this when I opened their website.

Your setup - Rust/WASM kernel + Service worker - sounds really sweet. If already public, please do share the link, else looking forward to your launch!

[binyu]

Will do, thanks!