The term "source code" implies that no compilation has occurred /nit

I'll nitpick right back at you: since JavaScript is not compiled in the software sense, I could only mean compile in the sense of "produce (something, esp. a list, report, or book) by assembling information collected from other sources: the local authority must compile a list of taxpayers."

;-)

Is it therefore accurate to say that the uncompiled source code is compiled in https://github.com/shaunew/Pac-Man/?

Touché. I guess so :)