title: How to exclude .php files from being watched by laravel mix
body: <p>I'm building a SPA application with laravel, and using laravel mix mostly for frontend files compilation. After launch "yarn run hot", I would like to exclude from being watched server side files (.php), becasuse every time I make a change in the backend, the whole page is reloaded. Even, after the latest windows update, doing a simple ajax call to the server could triger a "[Browsersync] Reloading Browsers..." event in my "yarn run hot" console.</p>
  
  <p>I suppose that excluding .php files from being watched by laravel mix would help me, but I don't know how. Perhaps it is a webpack configuration....</p>
  
  <p>Thanks in advance.</p>