The bip322.rs site runs a small WASM binary of the bip322 rust crate.
brew install llvm
cargo install wasm-pack
rustup target add wasm32-unknown-unknown
AR=/opt/homebrew/opt/llvm/bin/llvm-ar \
CC=/opt/homebrew/opt/llvm/bin/clang \
wasm-pack build \
--target web \
--out-name bip322 \
verify
The WASM binary and Javascript glue code can then be found in verify/pkg
.