[Feature] Linter rule

[EArminjon]

I think it's possible to create custom linter rule in flutter.

Could be great to have a linter to avoid coding :
SizedBox(width:10) instead of Gap(10)
SizedBox(height:10) instead of Gap(10)

[leventkantaroglu]

I suggest to do sth with use_design_system_item of https://pub.dev/packages/leancode_lint for a quick solution.

Here is a sample:

custom_lint:
  rules:
    - use_design_system_item:
      Gap:
        - instead_of: SizedBox
          from_package: flutter

[EArminjon]

That will ban completely SizedBox which is not good. My proposal is more for SizedBox without any child.