# File lib/guard/listener.rb, line 70
    def start_reactor
      return if ENV["GUARD_ENV"] == 'test'

      Thread.new do
        loop do
          if @changed_files != [] && !@paused
            changed_files = @changed_files.dup
            clear_changed_files
            ::Guard.run_on_change(changed_files)
          else
            sleep 0.1
          end
        end
      end
    end