title: What is the difference between package.json main and app.config.js expo.entryPoint?
body: <p>I'm new to TypeScript, React Native and Expo, and am confused how you configure the main entry point.</p>
  <p>This <a href="https://stackoverflow.com/questions/47742280/how-to-define-entry-point-for-react-native-app">SO question</a> talks about both configuration properties.</p>
  <p>The Expo docs also mention both:</p>
  <ul>
  <li><a href="https://docs.expo.io/versions/latest/config/app/#entrypoint" rel="nofollow noreferrer">https://docs.expo.io/versions/latest/config/app/#entrypoint</a></li>
  <li><a href="https://docs.expo.io/versions/latest/sdk/register-root-component/" rel="nofollow noreferrer">https://docs.expo.io/versions/latest/sdk/register-root-component/</a></li>
  </ul>