Though the explanation went a bit over my head just one (two) follow up question(s): How did you end up with WASM for the inline lambdas? Did you have some discussion on alternatives like Lua? I am curious about insights on choosing scripting engines/implementations, hence why I am asking.
A different question for this could also be if alternatives to V8 where considered I guess as I believe there are quite a few pure WASM engine implementations out there (unless I did not get some feature that requires you to use V8 and rules out pure WASM engines).