This sounds like the kind of low-thought pattern-based repetitive task where you could tell an LLM to do it and almost certainly expect a fully correct result (and for it to find some bugs along the way), especially if there's some test coverage for it to verify itself against. If you're skeptical, you could tell it to do it on some files you've already converted by hand and compare the results. This kind of thing was a slam dunk for an LLM even a year or two ago.