module Polyfill
  module V2_4
    module Dir
      module Class
        module EmptyQ
          module Method
            def empty?(path_name)
              exist?(path_name) && (entries(path_name) - ['.', '..']).empty?
            end
          end

          if RUBY_VERSION < '2.4.0'
            refine ::Dir.singleton_class do
              include Method
            end

            def self.included(base)
              base.include Method
            end
          end
        end
      end
    end
  end
end