Use case

After migrating to Flutter 2, I found that some deprecated widgets were not replaced by alternative widgets.
Like FlatButton and TextButton, or RaiseButton and ElevatedButton.

Proposal

I found that the dart Migration tool was very helpful when I started to migrate to Flutter 2.

If you could take the dart migration tool to the next level, it can be configurable by a YAML file or any similar way.
So community or packages maintainers could use it too.

For example, if the Flutter team is busy, someone from the community could post a configuration to migrate FlatButton to TextButton.