title: How to measure the number of people disabling push notifications from my progressive web app?
body: <p>I'm using the new web push API with service workers in my progressive web app but am worried about users disabling the push notification permission after originally enabling it.</p>
  
  <p>What is the best way to detect users disabling the notification permission (i.e. add instrumentation/analytics) so I can track this?</p>