IMO it would make the most sense if code generation was integral part of the dart build system. Few years ago I described shortcomings of build_runner on github

IMO it would make the most sense if code generation was integral part of the dart build system. Few years ago I described shortcomings of build_runner on github https://github.com/flutter/flutter/issues/63323 https://github.com/flutter/flutter/issues/63323, not much changed afaik.