<!DOCTYPE html>
<html>
<body>
<p>This tests enqueuing a lot of custom elements during innerHTML.<br>
WebKit should not lose JS wrappers of those custom elements.</p>
<pre id="log"></pre>
<div id="container"><script>
let failCount = 0;
class MyComponent extends HTMLElement {
    disconnectedCallback() {
        if (!(this instanceof MyComponent))
            failCount++;
        const x = new Array(100);
        for (let i = 0; i < 100; i++)
            x[i] = new Array(10);
    }
}
customElements.define("my-component", MyComponent);

if (window.testRunner)
    testRunner.dumpAsText();

let content = '';
for (let i = 0; i < 50; i++)
    content += '<my-component></my-component>';
content += '<my-component id="last"></my-component>'

let first = true;
for (let test = 0; test < 20; test++) {
    failCount = 0;
    for (let i = 0; i < 10; i++)
        document.getElementById('container').innerHTML = content;
    document.getElementById('log').append(failCount ? `FAIL - ${failCount} elements lost wrappers\n` : 'PASS\n');
}
document.getElementById('container').textContent = '';

</script></div>
</body>
</html>