title: Ways to identify if my clients are using the CDN or NPM versions of my JS library?
body: <p>I am currently in the midst of thinking of launching an open sourced version of my library on NPM. However, I'm wondering if there is a way for me to know whether the clients are using my CDN/NPM especially.</p>
  
  <p>Is there anyway that this can actually be done?</p>