Introducing RuboCop

[tagliala]

Hello,

Would you be interested in adding RuboCop to this project?

Do you have a preferred configuration file or any specific RuboCop settings you like to use?

I’ve introduced RuboCop to several gems I use, and my usual process is to open a series of pull requests:

• Stage I: Address all offenses in non-production code that are straightforward and unlikely to be controversial.
• Stage II: Tackle safe whitespace offenses in production code, focusing on changes where the "hide whitespace" diff remains minimal.
• Stage III: fix additional safe offenses in production code that are not likely to spark debate.
• Stage IV: Address unsafe offenses in production code that are also relatively uncontroversial.
• Other stages: Manual fixes

I would include the following extensions for this project:

• rubocop-packaging
• rubocop-performance
• rubocop-rspec

If this sounds good, I’d be happy to take care of the setup and submit incremental PRs for review

Here you can find an example: https://github.com/caxlsx/caxlsx/pulls?page=2&q=is%3Apr+rubocop+is%3Aclosed+author%3Atagliala+is%3Amerged

Please notice that introducing RuboCop can also help in improving performance, there is a couple of examples that I remember:

• Use include? and find for performance caxlsx/caxlsx#229
• Optimize string transformation using String#tr haml/haml#1168