title: Hot module replacement for native ES Modules (browser or Node.js) *without* Webpack? No build tools
body: <p>I'm looking to add HMR to plain Node.js code or browser code written with native ES Modules.</p>
  
  <p>There's no Babel, no Webpack, no transpilation, just plain JS files and ES Module <code>import</code> and <code>export</code> calls.</p>
  
  <p>Can we do HMR in plain Node or browser?</p>