packages/devtools_app/web/index.html

<!DOCTYPE html>

<!--
  Copyright 2018 The Chromium Authors. All rights reserved.
  Use of this source code is governed by a BSD-style license that can be
  found in the LICENSE file.
-->

<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <title>Dart DevTools</title>
    <link href="favicon.png" rel="icon" sizes="64x64">

    <script type="text/javascript">
        function supportsES6Classes() {
            "use strict";
            try { eval("class Foo {}"); }
            catch (e) { return false; }
            return true;
        }

        if (!supportsES6Classes()) {
            window.location.href = '/unsupported-browser.html';
        }

        // Handle URLs that pass all variables directly on a querystring without
        // the fragment (for ex. VS Code while it has some encoding bugs preventing
        // building the correct URLs using fragments
        // https://github.com/microsoft/vscode/issues/85930).
        if (window.location.search && window.location.search.length > 1) {
          // Ensure each component is encoded, because if the URI contains / slashes
          // Flutter will split on them and try to push multiple routes.
          const params = new URLSearchParams(unescape(window.location.search));
          params.forEach(function(v, k) { params.set(k, encodeURIComponent(v)) });
          window.location.replace(window.location.origin + '/#/?' + params.toString());
        }
    </script>
</head>

<body>
  <!-- This script installs service_worker.js to provide PWA functionality to
       application. For more information, see:
       https://developers.google.com/web/fundamentals/primers/service-workers -->
  <script>
    if ('serviceWorker' in navigator) {
      window.addEventListener('load', function () {
        navigator.serviceWorker.register('flutter_service_worker.js');
      });
    }
  </script>
  <script src="main.dart.js" type="application/javascript"></script>
</body>
</html>