Creating custom lint rules for Dart and Flutter projects 

Lint rules are a powerful way to improve the maintainability of a project. The more, the merrier! But while Dart offers a wide variety of lint rules by default, it cannot reasonably include every possible lint. For example, Dart does not include lints related to third-party packages or lints that are specific to your project and team.
I am pleased to announce the Custom Lint package, a powerful tool for building custom lint rules to allow package authors as well as Flutter and Dart developers to go beyond.
You can read more about the package in this blog invertase.link...