Rubocop automatically lints all open files, then reports errors and warnings in Nova's Issues sidebar and the editor gutter:

Requirements

Rubocop requires some additional tools to be installed on your Mac:

• Node.js 8.2.0 and NPM 5.2.0 or newer
• Rubocop

Running the following command should globally install Rubocop for most use cases:

gem install rubocop rubocop-rails rubocop-rspec rubocop-md

Configuration

• We now let you choose whether to prepend your rubocop with bundle exec. If you do not it will
  use rubocop from your default/global gemset.

• RVM users can now prepend their rubocop command with rvm .ruby-version do to surmount
  configuration issues with rvm. It will automatically use the .ruby-version file in your project
  root if you enable this option.

Troubleshooting

If you have a .rubocop.yml with inherit_gem and use rvm you will need to make sure your gems are
all available in the default gemset with rvm. The easiest way to do this is to avoid using app specific
gemsets. Otherwise try:

cd $APP_DIRECTORY
rvm gemset use default
bundle install

Version 1.5.2

• Move from --auto-correct to -a which works with both --auto-correct and --autocorrect

Version 1.5.1

• --auto-correct is deprecated, so now use --autocorrect

Version 1.5

• Add mise exec option for mise users.
• LLMs made JSON parsing unnecessarily complex so I refactored back to my original approach and then
  updated to resolve the real issue which was end_line is now last_line
• Add autocorrect option.
• Add option to use Rubocop in LSP mode for faster feedback

Version 1.4

• Add asdf exec option for asdf users.
• Fix rubocop JSON output parsing. Unclear when it changed, but this should work going forward.

Version 1.3.1

• Fix README and configuration description to more accurately reflect final state of changes.

Version 1.3

• Enable using rvm do with rubocop.

Version 1.2

• Enable using bundle exec with rubocop.
• Bug: fix error if there are no fixes from Rubocop.

Version 1.1

Add issue severity differentiation.

Version 1.0

Initial release