title: How do I enable debug mode in Webpack?
body: <p>I'm trying to utilize the <code>bypassOnDebug</code> option in image-loader, which means I need to put webpack in "debug mode" (according to the image-loader docs). </p>
  
  <p>Is it automatically in debug mode when using the dev server, or do I need to specify that in the webpack config? </p>
  
  <p>If I need to specify it could you please provide a code sample?</p>