<script>
function createWorker() {
    function createRequest() {
        setTimeout(() => {
            const request = new Request("http://test.org", {"method": "POST", "body": "text" });
            request.text();
            request.body;
        }, 0);
        self.postMessage("");
    };
    const worker = new Worker('data:application/javascript;charset=utf-8,' + createRequest.toString() + ';createRequest()');
    return new Promise(resolve => {
        worker.onmessage = () => {
            worker.terminate();
            resolve();
        }
    });
}

onload = () => {
    if (window.testRunner)
        testRunner.dumpAsText();
    console.log('This test PASS if it does not crash.')
    for (var i = 0; i < 100; ++i) {
        const script = document.createElement('script');
        script.src = `data:application/javascript;charset=utf-8,${createWorker.toString()};createWorker();`;
        document.head.appendChild(script);
    }
};
</script>