Honestly, this is something I've been wanting to do for a while... Last I looked though, I couldn't find many good resources on how WASI (or the byte code) worked... And VBA being single threaded might make things difficult too...

I have already built my own code interpreter in VBA to make Lambda syntax possible: https://github.com/sancarn/stdVBA/blob/master/src/stdLambda.... so I know it's definitely possible, just haven't figured out WASM yet...

VBA can call executables, but I can see some places locking things down such that that would not fly.