title: Nodejs in sandbox
body: <p>I'm using nodejs as a middle-man between a client browser and the server to handle all the requests. I'm trying to use nodejs as a filter tool and highlight (if not) all malicious scripts. But I realize that nodejs let the script to run with the current environment privilege. So, I decide to run it in a new context by installing sandbox (<code>npm install sandbox</code> or <code>git clone git://github.com/gf3/sandbox.git</code>). 
  However when I run node I have this following error:</p>
  
  <blockquote>
    <p>TypeError: Cannot call method
    \'runInNewContext\' of undefined'</p>
  </blockquote>
  
  <p>Any ideas anyone?</p>