Hot reload lib folder with Rails

Wanted to move some code inside lib folder and got frustrated by lack of hot-reloading?

Here it is an Oriol approved™️ code to solve it:

config/initializers/lib_hot_reload.rb:

module LibHotReload
  def self.track(libs)
    files = libs.map { |lib| Dir["lib/#{lib}.rb"] + Dir["lib/#{lib}/*.rb"] }.flatten
    reloader = ActiveSupport::FileUpdateChecker.new(files) do
      files.each { |file| load file }
    end

    ActiveSupport::Reloader.to_prepare do
      reloader.execute_if_updated
    end
  end
end

LibHotReload.track(%w[library1 library2])

Source 👉https://stackoverflow.com/questions/3282655/ruby-on-rails-3-reload-lib-directory-for-each-request/4368838#4368838

Happy reload! 🖖