class Cucumber::Formatter::HTML

def initialize(config)
  @io = ensure_io(config.out_stream, config.error_stream)
  @html_formatter = Cucumber::HTMLFormatter::Formatter.new(@io)
  @html_formatter.write_pre_message
  super(config)
end

def output_envelope(envelope)
  @html_formatter.write_message(envelope)
  @html_formatter.write_post_message if envelope.test_run_finished
end