title: React Native FlatList not working with constructed data
body: <p>Works: </p>
  
  <pre><code>&lt;FlatList
    data={['0', '1', '2', '3', '4']}
    renderItem={({ item }) =&gt; (
      &lt;Button title={item} /&gt;
    )}
  /&gt;
  </code></pre>
  
  <p>Doesn't work (nothing rendered):</p>
  
  <pre><code>&lt;FlatList
    data={[...Array(5).keys()].map(String)}
    renderItem={({ item }) =&gt; (
      &lt;Button title={item} /&gt;
    )}
  /&gt;
  </code></pre>
  
  <p>What could possibly be the cause?</p>