title: How to prevent Firefox DevTools from showing "Source Map not found" errors?
body: <p>I am using a couple of 3rd party minified Javascript files that have no .map file.  When I am debugging in Firefox DevTools, it consistently shows these errors:</p>
  
  <pre><code>Source map error: request failed with status 404
  Resource URL: https://foo.domain.com/widgets/widgets.min.js
  Source Map URL: widgets.min.js.map
  </code></pre>
  
  <p>This is really distracting since there are a number of these files and they really pollute the console.</p>
  
  <p>Is there anyway to turn these warnings off?</p>