The million dollar (perhaps literally) question is – could @kentonv have written this library quicker by himself without any AI help?
I *think* the answer to this is clearly no: or at least, given what we can accomplish today with the tools we have now, and that we are still collectively learning how to effectively use this, there's no way it won't be faster (with effective use) in another 3-6 months to fully-code new solutions with AI. I think it requires a lot of work: well-documented, well-structured codebases with fast built-in feedback loops (good linting/unit tests etc.), but we're heading there no
When you are not introducing a new pattern in the code structure, it's mostly copy-paste and then edit.
But it's also extremely rare, so a pretty high bar to be able to benefit from tools like AI.