title: Angular 10: postinstall script needed?
body: <p>This is maybe more a clarification question:</p>
  <p>According to the docs for Ivy (since Angular 9) we need to add a <code>postinstall</code> script into our package.json, which looks like this:</p>
  <p><code>&quot;postinstall&quot;: &quot;ngcc --properties es2015 browser module main --first-only --create-ivy-entry-points&quot;</code></p>
  <p>However, since we're trying to improve our build time (which takes ages since Ivy), I came across an article on <a href="https://entwickler.de/online/javascript/angular-10-579937743.html" rel="nofollow noreferrer">entwickler.de</a> (unfortunately in german), mentioning, that since Angular 9.1 we don't need this postinstall script anymore.</p>
  <p>However, I cannot find anything in the <a href="https://angular.io/guide/ivy" rel="nofollow noreferrer">official docs</a> about omitting this postinstall script...</p>
  <p>Would that be a way to potentially speed up the build time?</p>