Warner

Annotate your code w/ custom deprecation warnings to the $stderr when a newer version of a gem or rails is installed.

Especially useful for a controlled (rails) monkeypatching workflow:

Say you found a bug in a gem and waiting for a new release wil ltake to long. Add a monkeypatch in app/monkeypatches/ (e.g. app/monkeypatches/bootstrap_form.rb and maybe write a spec for it.) When you update the flawed gem, Warner will check the supplied version against the installed version and will put out a deprecation warning (w/ ActiveSupport::Deprecation) so you can act upon it.

Add this line to your application's Gemfile:

gem 'warner'

And then execute:

$ bundle

Or install it yourself as:

$ gem install warner

# app/monkeypatches/bootstrap_form.rb
Warner.gem_version_warning('bootstrap_form', "1.2", "upgrade to latest version")
Warner.rails_version_warning("5.0", "Remove this monkeypatch b/c it's fixed in 5.1 (see issue #99999)")
Warner.colored_warning("Somebody look at this piece of code please!")

will output:

DEPRECATION WARNING: [gem:bootstrap_form] 2.7.0 > 1.2 : upgrade to latest version (called from <top (required)> at /Users/berl/Clients/bwh/core/app/monkeypatches/bootstrap_form.rb:1)
DEPRECATION WARNING: [RAILS] 5.1.6 > 5.0 : Remove this monkeypatch b/c it's fixed in 5.1 (see issue #99999) (called from <top (required)> at /Users/berl/Clients/bwh/core/app/monkeypatches/bootstrap_form.rb:2)
DEPRECATION WARNING: Somebody look at this piece of code please! (called from <top (required)> at /Users/berl/Clients/bwh/core/app/monkeypatches/bootstrap_form.rb:3)

# config/environments/development.rb
config.active_support.deprecation = -> (message, callstack) {
  $stderr.puts "\e[41;37;1m#{message}\e[0m"
}

To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/LeipeLeon/warner. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

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

Everyone interacting in the Warner project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.