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<import src="../resources/dump-as-text.sky" />
<body id="body">
<script>
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    mutations[0].addedNodes[-1];
}

var mutationObserver = new MutationObserver(mutationCallback);
var body = document.getElementById("body");
mutationObserver.observe(body, {childList: true});
body.appendChild(new Text("PASS. We didn't crash"));
</script>
</body>
</html>