You can use WebAssembly today, but you still need some JS interop for a bunch of browser features (like DOM manipulation). Your core logic can be in WebAssembly though. C# has Blazor, and I wouldn’t be surprised if there’s some Rust WebAssembly projects. I seem to recall that there’s a reimplementation of Flash player that’s built in Rust and compiles to WebAssembly.
You can use WebAssembly today, but you still need some JS interop for a bunch of browser features (like DOM manipulation). Your core logic can be in WebAssembly though. C# has Blazor, and I wouldn’t be surprised if there’s some Rust WebAssembly projects. I seem to recall that there’s a reimplementation of Flash player that’s built in Rust and compiles to WebAssembly.