title: What is the Haste module map in node.js?
body: <p>When I launch :</p>
  
  <pre><code>react-native bundle --entry-file='index.js' --bundle-output='./ios/MyProject/main.jsbundle' --dev=false --platform='ios' --assets-dest='./ios'
  </code></pre>
  
  <p>I have an error which says that :</p>
  
  <pre><code>Unable to resolve module `util` from `/Users/canatac/RNProjects/&lt;MyProject&gt;/node_modules/&lt;A_Module&gt;/lib/Bot.js`: Module `&lt;A_Module&gt;` does not exist in the Haste module map.
  </code></pre>
  
  <p>But what is a Haste module map ?</p>