title: Can Web Worker `importScripts` method access scripts cached by the main thread?
body: <p>Multiple questions actually:</p>
  
  <ul>
  <li><p>Will <code>importScripts</code> always load the scripts with a GET request or can it cache scripts?</p></li>
  <li><p>Can <code>importScripts</code> access scripts cached in the main thread or browser context?</p></li>
  <li><p>Can the worker cache scripts for the main thread to access? (simply the other way around)</p></li>
  </ul>