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<!DOCTYPE html>
<html>
<title>Service Workers: event.waitUntil(f)</title>
<head>
<link rel="help" href="https://w3c.github.io/ServiceWorker/#wait-until-method">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<!--
`event.waitUntil(f)` method, when called in `oninstall` or `onactivate`,
extends the lifetime of the event. When called in `oninstall`, it delays
treating the installing worker until the passed [Promise][1] resolves
successfully. This is primarily used to ensure that a `ServiceWorker` is not
active until all of the core caches it depends on are populated. When called in
`onactivate`, it delays treating the activating worker until the passed
[Promise][1] resolves successfully. This is primarily used to ensure that any
[Functional events][2] are not dispatched to the `ServiceWorker` until it
upgrades database schemas and deletes the outdated cache entries.
[1]: http://goo.gl/3TobQS
[2]: #functional-events
-->
<script>
test(function() {
// not_implemented();
}, "There are no tests for section event.waitUntil(f) so far.");
</script>
</body>
</html>
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