class Capybara::Server

def initialize(app,
               *deprecated_options,
               port: Capybara.server_port,
               host: Capybara.server_host,
               reportable_errors: Capybara.server_errors,
               extra_middleware: [])
  unless deprecated_options.empty?
    warn 'Positional arguments, other than the application, to Server#new are deprecated, please use keyword arguments'
  end
  @app = app
  @extra_middleware = extra_middleware
  @server_thread = nil # suppress warnings
  @host = deprecated_options[1] || host
  @reportable_errors = deprecated_options[2] || reportable_errors
  @port = deprecated_options[0] || port
  @port ||= Capybara::Server.ports[port_key]
  @port ||= find_available_port(host)
  @checker = Checker.new(@host, @port)
end