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<!doctype html>
<meta charset="utf-8">
<meta name=timeout content=long>
<title>NodeList (static collection) "length" getter tampered (Array.prototype.indexOf)</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script src="support/NodeList-static-length-tampered.js"></script>
<script>
test(() => {
const nodeList = makeStaticNodeList(100);
for (var i = 0; i < 50; i++) {
if (i === 25)
Object.defineProperty(nodeList, "length", { get() { return 10; } });
assert_equals(arrayIndexOfNodeList(nodeList), i >= 25 ? -1 : 50);
}
});
</script>
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