title: What's the .angular directory in the project root about?
body: <p>According to <a href="https://angular.io/guide/file-structure" rel="noreferrer">the docs</a>, there's nothing called <em>.angular</em> being regarded. Yet, in my project, I get that directory, immediately in the root of the project (on the same level as e.g. <em>package.json</em>).</p>
  <p>It wasn't there before because my <em>.gitignore</em> would've barked at it. Currently, I'm trying out the latest Angular version, 13.0 and I conclude that it's a new addition to the tooling. Probably, it's some temporary stuff, since its contents are the following.</p>
  <ul>
  <li><em>.angular/cache/angular-webpack</em></li>
  <li><em>.angular/cache/babel-webpack</em></li>
  </ul>
  <p>It was pointless to google <em>.angular directory dot what is</em> and the only (semi-)relevant hit I got was the docs linked above.</p>
  <p>What's up with <em>.angular</em> directory and do I need to care (and/or version control it)?</p>