Version 1.15.2 is out on the AppStore. It improves a lot of things with WebAssembly execution, and adds a second WebAssembly interpreter, wasm3 (@wasm3_engine ). It is faster than Apple's engine on some commands, slower on other commands, so the choice is up to the user.

If a WebAssembly file has the suffix .wasm3, then a-Shell will use the wasm3 engine, otherwise (no suffix or .wasm suffix) it will use Apple's engine. The biggest change is with the xz command: xz.wasm3 is 10x faster.