The patent specifically targets compiling JavaScript to LLVM and running a monitoring daemon to update the IR when the source changes.
It is ridiculous.
It is a general compilation process, applying it to these specific conditions is in no way technically original. I hope it isn't from a legal standpoint, but IANAL...
I'm aware of that patent long before and not following the same structure. Besides, it also targets other languages by saying 'Javascript or similar'. No worries here. Thanks for reminding.
and Lua ..
how Unity3D uses javascript is also related.