> I'm sure that AI made this speedup work much easier and quicker; probably just access to the monorepo and a prompt of "make the launcher boot up faster while changing no functionality. Keep track of before/after benchmark numbers" would be fine as long as you can get your co-workers to approve whatever diff gets spat out the end.

Yup.

So, here's my relevant example of how "vibe coding" doesn't mean "not caring", an isochrone map generator, real time, about the same total download (in a private window) as Google maps is when looking at Berlin:

https://benwheatley.github.io/Isochrone/web/?region=berlin&n...

It almost certainly still has bugs. And the code itself is probably terrible, because LLMs don't always clean up when you tell them to remove everything related to a bug.

But it is a download that's 90% data, and does get you a real-time updates as you drag your origin around the largest city in the EU.