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<!-- This Source Code Form is subject to the terms of the Mozilla Public
- License, v. 2.0. If a copy of the MPL was not distributed with this
- file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
<html>
<head>
<script>
window.onclick = () => {
Promise.resolve().then(() => {
throw new Error("Second");
});
throw new Error("First");
};
</script>
</head>
<body></body>
</html>