I am super interested in WASM but just playing devil's advocate here. I also think we could do away with the DOM and simply render in WebGL. Are you doing something in WASM already? Any language preferences there? I am considering Rust.
I've seen some examples in Rust (using a library for very basic DOM manipulation) and tried Mozilla's Python "notebook" environment Pyodide.
I'm also experimenting a bit with Transcrypt Python-to-JS transpiler, but nothing is going to production soon (real work or games)
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