title: How to include route handlers in multiple files in Express?
body: <p>In my NodeJS <code>express</code> application I have <code>app.js</code> that has a few common routes. Then in a <code>wf.js</code> file I would like to define a few more routes. </p>
  
  <p>How can I get <code>app.js</code> to recognize other route handlers defined in <code>wf.js</code> file? </p>
  
  <p>A simple <em>require</em> does not seem to work.</p>