title: Does Jest reset the JSDOM document after every suite or test?
body: <p>I'm testing a couple of components that reach outside of their DOM structure when mounting and unmounting to provide specific interaction capability that wouldn't be possible otherwise.</p>
  
  <p>I'm using Jest and the default JSDOM initialization to create a browser-like environment within node. I couldn't find anything in the documentation to suggest that Jest reset JSDOM after every test execution, and there's no explicit documentation on how to do that manually if that is not the case.</p>
  
  <p>My question is, does Jest reset the JSDOM instance after every test, suite or does it keep a single instance of JSDOM across all test runs? If so, how can I control it?</p>