Since libfive is built for these layers of abstraction, has any effort been made to compile libfive to WASM, and make bindings for JS similar to Python?

There's also the Hoot project that might make it possible to do Scheme scripting in WASM contexts:

Hoot is the codename for the Guile->WebAssembly project launched by the Spritely Institute. In
addition to the compiler, Hoot contains a full WebAssembly toolchain with a WAT parser, an assembler, a disassembler, an interpreter, etc. https://gitlab.com/spritely/guile-hoot