register-service-worker.html

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<!DOCTYPE html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script>

<script src="/speculation-rules/prerender/resources/utils.js"></script>

<script src="/speculation-rules/prerender/resources/deferred-promise-utils.js"></script>

<body>

<script>

const params = new URLSearchParams(location.search);

const uid = params.get('uid');

const SCOPE = './';

const WORKER_URL = './do-nothing-worker.js';

async function unregisterServiceWorker(scope) {

  const registration = await navigator.serviceWorker.getRegistration(scope);

  if (!registration)

    return;

  return registration.unregister();

// The main test page (register-service-worker.https.html) loads the

// initiator page, then the initiator page will prerender itself with the

// `prerendering` parameter.

const isPrerendering = params.has('prerendering');

if (!isPrerendering) {

  unregisterServiceWorker(SCOPE);

  loadInitiatorPage();

} else {

  const prerenderEventCollector = new PrerenderEventCollector();

  const promise = navigator.serviceWorker.register(WORKER_URL, {scope: SCOPE})

      .then(registration => {

        prerenderEventCollector.addEvent('service worker registered');

        return registration.unregister();

});

  prerenderEventCollector.start(promise, 'ServiceWorker.register');

</script>

</body>