module ProgressBar::Refinements::Enumerator

def with_progressbar(options = {}, &block)
  progress_bar = ProgressBar.create(options.merge(:starting_at => 0, :total => size))
  each do |item|
    progress_bar.increment
    next unless block
    yielded_args = []
    yielded_args << item         if block.arity > 0
    yielded_args << progress_bar if block.arity > 1
    fail ::ArgumentError, ARITY_ERROR_MESSAGE if block.arity > 2
    yield(*yielded_args)
  end
end