WebAssembly Text Format (wat) is fine to use. You declare functions that run imperative code over primitive i32/i64/f32/f64 values, and write to a block of memory. Many algorithms are easy enough to port, and LLMs are pretty great at generating wat now.

I made Orb as a DSL over raw WebAssembly in Elixir. This gives you extract niceties like |> piping, macros so you can add language features like arenas or tuples, and reusability of code in modules (you can even publish to the package manager Hex). By manipulating the raw WebAssembly instructions it lets you compile to kilobytes instead of megabytes. I’m tinkering on the project over at: https://github.com/RoyalIcing/Orb