Yes, rr can record python and JS execution just fine, but the debugging experience is hopeless, since right now rr just gives you gdb. With an astounding tolera

Yes, rr can record python and JS execution just fine, but the debugging experience is hopeless, since right now rr just gives you gdb. With an astounding tolerance for pain you can make progress by calling JS engine functions from gdb, but nobody wants that. This is fixable, however, and on my agenda.