title: node.js request package has syntax error
body: <p>I just installed the latest request package, npm install request.
  In my app, I have set the <code>NODE_DEBUG=request</code> so now I get a syntax error:</p>
  
  <pre><code>node_modules/request/lib/debug.js
  
  module.exports =
  function debug () {
    if (/\brequest\b/.test(process.env.NODE_DEBUG))
      console.error('REQUEST %s', util.format.apply(util, arguments))
  }
  
  ReferenceError: util is not defined
  </code></pre>
  
  <p>Any thoughts on this? What is "util"?</p>