zws.rb

require 'v8'
require 'open-uri'

class ZWS
  def initialize
    @cxt = V8::Context.new
    open("https://raw.github.com/youpy/node-zws/master/lib/zws.js") do |file|
      @cxt.eval(file, "zws.js")
    end
  end

  def encode(text)
    @cxt.eval('ZWS.encode').call(text)
  end

  def decode(text)
    @cxt.eval('ZWS.decode').call(text)
  end
end

z = ZWS.new
z.encode("hello")