testing/web-platform/tests/service-workers/service-worker/resources/nested-blob-url-worker-created-from-worker.html


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<!doctype html>
<script>
const baseLocation = window.location;
const workerUrl = new URL('create-blob-url-worker.js', baseLocation).href;
const worker = new Worker(workerUrl);

function fetch_in_worker(url) {
  const resourceUrl = new URL(url, baseLocation).href;
  return new Promise((resolve) => {
    worker.onmessage = (event) => {
      resolve(event.data);
    };
    worker.postMessage(resourceUrl);
  });
}
</script>