LLMs do see randomized identifiers, whenever they encounter minimized code. And you can get a bit of an idea how much they learn, by giving an LLM some minimize

LLMs do see randomized identifiers, whenever they encounter minimized code. And you can get a bit of an idea how much they learn, by giving an LLM some minimized JS and asking it to restore it with meaningful var names. When I tried it once the model did a surprisingly good job, though it was quite a while ago and with a small model by today's standards.