feat: Preserve trailing commas

[spydon]

Description

After the new formatter was introduced it started removing trailing commas. Trailing commas is a feature which most of the Flutter & Dart community like since it makes the git diffs less noisy and the code easier to read.

My suggestion in that we add trailing_commas: preserve to the next version of very_good_analysis, so that the people depending on this package can continue to enjoy their trailing commas.

This is what would need to be added:

formatter:
  trailing_commas: preserve

Requirements

• All CI/CD checks are passing.
• There is no drop in the test coverage percentage.

Additional Context

No response

[marcossevilla]

hey @spydon this was merged to main in #152, will be available on v9.0.0 once it lands!

closing this now 👍

[Conrad598]

FWIW, I found this change surprising. I think most people would expect this package to only provide lints, and not configure the formatter. Perhaps this change is worth reconsidering?

In any case, we can add this to the analysis_options.yaml to preserve the default formatter settings:

formatter:
  trailing_commas: automate