I would love to see the git history for dart:ui, but I'm not sure if it is public? I checked the github of dart_lang, but I didn't find anything. https://api.flutter.dev/flutter/dart-ui/dart-ui-library.html
Why am I looking for this? There have been some changes in painting.dart I'd love to understand better, because we have issues with this after Flutter release 3.13.0
I now found this: https://github.com/flutter/engine/blob/flutter-3.13-candidate.19/lib/ui/painting/path.cc This has a lot of the same functions I see in my flutter project, but a lot is also missing. We extended "Path" which was now changed to _NativePath and is not extendable anymore...