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samples/web/_packages/web_startup_analyzer/example/web/index.html

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<!DOCTYPE html>
<html>
<head>
<base href="$FLUTTER_BASE_HREF">
<meta charset="UTF-8">
<meta content="IE=Edge" http-equiv="X-UA-Compatible">
<meta name="description" content="web_startup_analyzer example">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta name="apple-mobile-web-app-title" content="example">
<link rel="apple-touch-icon" href="icons/Icon-192.png">
<link rel="icon" type="image/png" href="favicon.png"/>
<title>web_perf_metrics example</title>
<link rel="manifest" href="manifest.json">
<script>
const serviceWorkerVersion = null;
</script>
<script src="flutter.js" defer></script>
</head>
<body>
<script type="text/javascript" src="assets/packages/web_startup_analyzer/lib/web_startup_analyzer.js"></script>
<script>
var flutterWebStartupAnalyzer = new FlutterWebStartupAnalyzer();
var analyzer = flutterWebStartupAnalyzer;
window.addEventListener('load', function(ev) {
analyzer.markStart("loadEntrypoint");
_flutter.loader.loadEntrypoint({
serviceWorker: {
serviceWorkerVersion: serviceWorkerVersion,
},
onEntrypointLoaded: function(engineInitializer) {
analyzer.markFinished("loadEntrypoint");
analyzer.markStart("initializeEngine");
engineInitializer.initializeEngine().then(function(appRunner) {
analyzer.markFinished("initializeEngine");
analyzer.markStart("appRunnerRunApp");
appRunner.runApp();
});
}
});
});
</script>
</body>
</html>