title: How to require underscore in react-native
body: <p>The change log of react-native mentions
  <a href="https://facebook.github.io/react/blog/2015/04/17/react-native-v0.4.html" rel="noreferrer">https://facebook.github.io/react/blog/2015/04/17/react-native-v0.4.html</a></p>
  
  <blockquote>
    <p>NPM modules compatibility: There are a lot of libraries on NPM that do not depend on node/browser internals that would be really useful in React Native, such as superagent, underscore, ...</p>
  </blockquote>
  
  <p>But It doesn't work for me.
  It is how I install, through package.json</p>
  
  <pre><code># package.json
  
   "dependencies": {
     "react-native": "*",
     "underscore": "^1.8.3"
     ...
  </code></pre>
  
  <p>And I indeed see it in the npm dependecy</p>
  
  <pre><code># npm ls
  ├─┬ react-native@0.8.0
  |  ...
  ├── react-native-navbar@0.7.3
  └── underscore@1.8.3
  </code></pre>
  
  <p>And it does work for some other react components</p>
  
  <p>It is how I require </p>
  
  <pre><code>var _ = require('underscore');
  </code></pre>
  
  <p>But it doesn't work, <code>_</code> is undefined</p>