title: Find out what file is requiring another file in Node
body: <p>The title says pretty much what I need to do.</p>
  
  <p>I have a module in node_modules which prints something to the standard output (and I don't want this to happen) but I don't find where I'm requiring this file.</p>
  
  <p>I may be misunderstanding how modules are included, as I though that they must be required in order to be executed.</p>