angular__angular/devtools/src/index.html

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <title>AngularDevtools</title>
    <base href="/" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link rel="icon" type="image/x-icon" href="assets/icon16.png" />
    <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet" />

    <!-- <script src="https://unpkg.com/@webcomponents/webcomponentsjs@2.0.3/custom-elements-es5-adapter.js"></script> -->
    <link rel="stylesheet" href="./styles.css"></head>
  </head>
  <body>
    <div>
      <app-root></app-root>
    </div>

    <script src="./angular/packages/zone.js/bundles/zone.umd.js"></script>
    <script type="module" src="./bundle/main.js"></script>
  </body>
</html>