RuboCop HK

A comprehensive RuboCop configuration for modern Ruby 3.3+ and Rails 7.1+ applications, featuring 45+ warning-only modern rules with team-focused gradual adoption.

Features

• Modern Ruby & Rails Support: Target Ruby 3.3+ and Rails 8.0+ with latest patterns
• Warning-Only Modern Rules: 45+ new rules as warnings to enable gradual adoption
• Team-Focused: Educational approach with clear explanations for each rule
• Zero Breaking Changes: All new features are opt-in warnings only
• Comprehensive Coverage: Style, Rails, RSpec, Performance, and Lint rules
• Production Ready: 100% test coverage with extensive CI/CD validation

Installation

Add this line to your application's Gemfile:

gem 'rubocop-hk', '~> 1.3.0', require: false

And then execute:

bundle install

Quick Start

1. Create a .rubocop.yml file in your project root:

inherit_gem:
  rubocop-hk: config/default.yml

1. Run RuboCop:

bundle exec rubocop

1. Review warnings and gradually promote them to errors when your team is ready:

# View current warnings
bundle exec rubocop --format json | jq '.files[].offenses[] | select(.severity=="warning")'

# Use the promotion script (see documentation)
ruby scripts/promote-warnings.rb

Configuration Options

RuboCop HK provides several preconfigured options:

• config/default.yml - Balanced configuration with modern warning-only rules
• config/strict.yml - More stringent rules for mature codebases
• config/rails.yml - Rails-specific optimizations

See CUSTOMIZATION.md for detailed configuration options.

Documentation

• Usage Guide - Comprehensive usage instructions and examples
• Gradual Adoption Guide - Team-focused 4-phase adoption strategy
• Modern Rules Reference - Educational explanations for all 45+ new rules
• Customization Guide - Advanced configuration and customization options
• Quick Start Guide - Getting started and basic setup

Requirements

• Ruby >= 3.3.0
• RuboCop >= 1.78.0
• Rails >= 7.1.0 (if using Rails cops)

New in v1.3.0

This maintenance release focuses on cross-platform reliability and security:

• ✅ All CI/CD checks passing - Ruby 3.3 & 3.4 on Ubuntu, macOS, and Windows
• 🔒 Security updates - Updated rack, rexml, and uri to fix 7 CVEs
• 🔧 Fixed Windows compatibility - Enhanced test suite for Windows platforms
• ⚡ Improved plugin loading - Updated to modern plugins: directive
• 🎯 RuboCop 1.78-1.81 compatible - Verified compatibility across versions
• 📦 45+ warning-only modern rules - Gradual adoption without breaking builds

See CHANGELOG.md for complete release notes and security details.

Contributing

Bug reports and pull requests are welcome on GitHub. This project is intended to be a safe, welcoming space for collaboration.

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

License

The gem is available as open source under the terms of the MIT License.