I recently moved to a new team at Zendesk, which meant switching to a new programming language and framework I haven't used in years.
Besides reading various related documents and trying to familiarize myself with new things, I think I have come up with the most useful AI prompt I have used so far. It goes something like this:
"I've been using [Language A + Framework 1] for the last 3 years and have not used [Language B] since version X. Tell me everything I need to know switching to this codebase, which is using the latest version of [Language B] and [Framework 2] as a framework."
And this was awesome. It helped me map my existing knowledge to the new environment, highlighting new language features and framework conventions I had missed. I asked a lot of clarifications and follow-up questions, and at this point, I feel like I am very familiar with the code and features of the framework. This is probably the most time-saving prompt I have used to date.