no_to_n_impl.rb

require 'nodejs'
require 'native'

module HTTP
  HTTP_JS = Native(node_require('http'))
  class Server
    def self.listen(port, &block)
      HTTP_JS.createServer(lambda { |req_js, res_js|
                             block.call(Native(req_js), Native(res_js))
                           }).listen(port)

    end
  end
end

port = 1337
HTTP::Server.listen(port) { |req, res|
  res.writeHead(200, {'Content-Type': 'text/plain'}.to_n )
  res.end "Hello World\n"
}