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<!DOCTYPE html>
<head>
<title>PerformanceObserver.supportedEntryTypes contains "largest-contentful-paint"</title>
</head>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(() => {
if (typeof PerformanceObserver.supportedEntryTypes === "undefined")
assert_unreached("supportedEntryTypes is not supported.");
assert_greater_than(PerformanceObserver.supportedEntryTypes.indexOf("largest-contentful-paint"), -1,
"There should be an entry 'largest-contentful-paint' in PerformanceObserver.supportedEntryTypes");
}, "supportedEntryTypes contains 'largest-contentful-paint'.");
</script>
</body>
</html>
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