title: Code splitting causes chunks to fail to load after new deployment for SPA
body: <p>I have a single page app that I code split on each route. When I deploy a new version of my app the users will usually get an error if a user still has the page open and visits a route they haven't visited before. </p>
  
  <p>Another scenario where this can also happen is if the app has service workers enabled. When the user visits a page after a new deployment, the service worker will serve from the cache. Then if the user tries to visit a page not in their cache, they'll get the chunk loading failure.</p>
  
  <p>Currently I disabled code splitting in my app to avoid this but I've been very curious what's the best way to handle this issue. I've thought about pre-loading all the other routes after the user finishes loading the initial page and I believe this might fix the issue for code splitting on routes. But let's say I want to code split on components then that would mean I have to try to figure out when and how to pre-load all of those components. </p>
  
  <p>So I'm wondering how do people handle this issue for single page apps? Thanks! (I'm currently using create-react-app)</p>