function testWorkerAbortedFetch() {
  var ac = new AbortController();
  ac.abort();

  fetch("slow.sjs", { signal: ac.signal }).then(
    () => {
      postMessage(false);
    },
    e => {
      postMessage(e.name == "AbortError");
    }
  );
}

function testWorkerFetchAndAbort() {
  var ac = new AbortController();

  var p = fetch("slow.sjs", { signal: ac.signal });
  ac.abort();

  p.then(
    () => {
      postMessage(false);
    },
    e => {
      postMessage(e.name == "AbortError");
    }
  );
}

self.onmessage = function (e) {
  self[e.data]();
};