title: How to debug Angular CLI dev server
body: <p>When running <code>ng serve</code> from the Angular CLI in development, I expect for my application to be served at a local URL with live reloading. Typically, after running <code>ng serve</code> and loading my app in the browser, the console shows a single <code>[WDS] Live Reloading enabled.</code> log entry.</p>
  
  <h3>The problem:</h3>
  
  <p>Recently the <code>[WDS] Live Reloading enabled.</code> log message has started being printed to the console 4 times, and evidence seems to suggest that 4 seperate processes are listening to my app's file changes. This is causing a slowdown on page reloading and some other strange activity. I am also seeing the following messages printed in my terminal during initial compilation of my app (immediately after running <code>ng serve</code>), which I don't remember ever seeing before.</p>
  
  <ul>
  <li><code>｢wds｣: webpack output is served from /</code></li>
  <li><code>｢wds｣: 404s will fallback to //index.html</code></li>
  </ul>
  
  <p>None of this is preventing my app from being served locally, but it does seem to be causing a general slowdown in development.</p>
  
  <p>What might be causing this? The Angular CLI is generally a "batteries included" tool, and I'm unsure how to go about debugging this problem (short of reverting a bunch of changes and walking forward slowly--which I'd rather not have to do). Any debugging tips / insight / or suggestions are appreciated!</p>