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That's really cool. What are the advantages of using Zig for web pages like this?

For me it's usually for simulations where low level code with manual memory control makes a difference between unusable and real time. Not long ago I played with triangulations: tchayen.com/handmade-pat... For the same data, the most optimized JS code I could write took 900ms, Zig version 25ms.

I have a 'wasm' command declared in package.json which compiles the binary and places it in web/bin. Plugin is listening for changes in zig/ and runs that command. Finally handleHotUpdate() notices that a *.wasm file changed and sends HMR to the browser.

And this is all it took on the JS side.