title: How to solve [WDS] Disconnected! error in Angular 7 and Ionic 4
body: <p>When working with latest Angular (7) and ionic (4) I got the error</p>
  
  <p><code>[WDS] Disconnected!</code></p>
  
  <p>every time I run my app via</p>
  
  <p><code>ionic serve --consolelogs --no-open --browser='firefox developer edition' --source-map</code></p>
  
  <p>in the latest firefox developer edition. I tested other brothers too and it appears in the most.</p>