title: What is purpose of latest doctor command in React Native
body: <p>I was checking latest react native blog in which they introduced doctor command for react native.</p>
  
  <p>the only thing i can understand from there is do envoirnment stuff for you. ?</p>
  
  <p>But i don't understand the purpose. </p>
  
  <blockquote>
    <p>What is exactly purpose of <code>doctor</code>  command in react native ?</p>
  </blockquote>