title: angular cli duplicate chunk name after ng build
body: <p>I'm developing Angular v8 app with using Angular CLI v8.</p>
  
  <p>I have <code>dashboard.module.ts</code></p>
  
  <p>And after executing command <code>ng-build</code> I see in <code>dist</code> folder files with names:</p>
  
  <pre><code>dashboard-dashboard-module.js
  </code></pre>
  
  <p>Why not <code>dashboard-module.js</code>?</p>
  
  <p>Why it's duplicate <code>dashboard-dashboard</code>?</p>
  
  <p>What's the reason of naming it such way? Or it's default behavior?</p>