File: scope-has-crash.html

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<!DOCTYPE html>
<title>Firefox bug: Crash when collapsing :has() invalidation with empty @scope rule</title>
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=2013351">
<link rel="author" href="mailto:dshin@mozilla.com">
<style>
@scope (:not(:has(:nth-child(2 of .category)))) {
    .category {
      grid-column:span 2
    }
}

@scope (.category-wrap:has(:nth-child(2 of .category))) {
  /* Non-matching @media-rule, etc */
}
</style>
<div id=dut class=category-wrap>
  <div class=department></div>
  <div class=category></div>
  <div class=category></div>
</div>
<script>
// Force layout so that we trigger an invalidation below.
getComputedStyle(dut).height;
const d = document.createElement("div");
d.classList.add('category');
dut.appendChild(d);
</script>