demos(network-idle): add network-idle-callback demo

GoogleChromeLabs · Dec 2, 2018 · d4ae22d · d4ae22d
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diff --git a/demos/network-idle.html b/demos/network-idle.html
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+<!DOCTYPE html>
+<html>
+
+<head>
+    <meta charset="utf-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <title>network-idle-callback demo</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="stylesheet" type="text/css" media="screen" href="../test/main.css" />
+    <script src="https://polyfill.io/v2/polyfill.min.js?features=IntersectionObserver"></script>
+    <script>
+        if ('serviceWorker' in navigator) {
+            window.addEventListener('load', function () {
+                navigator.serviceWorker.register('./sw.js').then(function (registration) {
+                    console.log('ServiceWorker registration successful with scope: ', registration.scope);
+                }, function (err) {
+                    console.log('ServiceWorker registration failed: ', err);
+                });
+            });
+        }
+    </script>
+</head>
+
+<body>
+    <p>This demo uses [network-idle-callback](https://github.com/pastelsky/network-idle-callback) to only prefetch when network activity goes idle in the current tab.</p>
+    <a href="../test/1.html">Link 1</a>
+    <a href="../test/2.html">Link 2</a>
+    <a href="../test/3.html">Link 3</a>
+    <section id="stuff">
+        <a href="../test/main.css">CSS</a>
+    </section>
+    <a href="../test/4.html" style="position:absolute;margin-top:900px;">Link 4</a>
+    <script src="https://unpkg.com/[email protected]/lib/index.js"></script>
+    <script type="module">
+        import quicklink from "../dist/quicklink.mjs";
+        quicklink({timeoutFn: networkIdleCallback});
+    </script>
+</body>
+
+</html>
diff --git a/demos/sw.js b/demos/sw.js
@@ -0,0 +1,27 @@
+importScripts('https://unpkg.com/[email protected]/lib/request-monitor.js');
+
+self.addEventListener('install', function (e) {
+  console.log('[ServiceWorker] Installed');
+});
+
+self.addEventListener('activate', function (e) {
+  console.log('[ServiceWorker] Activated');
+});
+
+self.addEventListener('fetch', function (e) {
+  console.log('[ServiceWorker] Fetch', e.request.url);
+  self.requestMonitor.listen(e);
+
+  const promise = fetch(e.request)
+      .then(response => {
+        console.log('done', e.clientId);
+        self.requestMonitor.unlisten(e);
+        return response;
+      })
+      .catch(e => {
+        console.log('error');
+        self.requestMonitor.unlisten(e);
+      });
+
+  e.respondWith(promise);
+});