title: Does removing unused imports have an impact on bundle size and build time in Reactjs
body: <p>I have a Reactjs application created using Create React app which while starting and building gives a lot of warnings which states that I have unused vars or imports in my Components.</p>
  
  <pre><code>./src/components/home/Header.js
      Line 10:   'Switch' is defined but never used  no-unused-vars
      Line 10:   'Route' is defined but never used   no-unused-vars
  </code></pre>
  
  <p>Does having <code>no-unused-vars</code> have a considerable impact on final bundle size and build time of the application. Can I reduce build time and bundle size by removing all these warnings? </p>