<!doctype html>
<meta charset=utf-8>
<title>DOMImplementation.createDocument()</title>
<link rel="author" title="Nate Chapin" href="mailto:japhet@chromium.org">
<link rel=help href="https://dom.spec.whatwg.org/#dom-domimplementation-createdocument">
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1086801">
<meta name="assert" content="Calling on createDocument() on a DOMImplementation from a document with a null browsing context should not crash"/>
<iframe id="i"></iframe>
<script>
var doc = i.contentDocument;
i.remove();
doc.implementation.createDocument("", "");
</script>