As is, I doubt it is very usable. It typically builds using emscripten and a recent version of the development source. It is surely the plan to make it a properly supported version. I can’t promise when though. This will only change if someone is serious about getting this to work or we can pay someone to make it work.
Thanks for this feedback.
So, for now, I will have to revert to a more practical solution.
I guess that delegating computations to pengines on my server could be an acceptable choice?
BTW, what would be the cost/effort to a generally available webasm runtime of swipl? And how reliable could this one be?