<title>Test ImageDecoder destruction w/ ReadableStream doesn't crash.</title>
<body>
<script>
let iframe = document.createElement('iframe');
document.body.appendChild(iframe);
let decoder = new iframe.contentWindow.ImageDecoder({
    data: new Blob(['blob']).stream(),
    type: 'image/jpeg',
});
document.querySelector('body').remove();
</script>
</body>