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chromium/third_party/blink/web_tests/external/wpt/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/no-transferring.https.html 

<!DOCTYPE html>
<meta charset="utf-8">
<title>SharedArrayBuffers cannot be transferred</title>
<link rel="help" href="https://html.spec.whatwg.org/#structuredclone">
<link rel="author" title="Domenic Denicola" href="mailto:[email protected]">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<script>
"use strict";

test(() => {
  const sab = new SharedArrayBuffer();
  assert_throws_dom("DataCloneError", () => window.postMessage(sab, "*", [sab]));
  assert_throws_dom("DataCloneError", () => window.postMessage("test", "*", [sab]));
}, "Trying to transfer a SharedArrayBuffer to this window throws");

test(() => {
  const sab = new SharedArrayBuffer();
  const worker = new Worker("../resources/echo-worker.js");
  assert_throws_dom("DataCloneError", () => worker.postMessage(sab, [sab]));
  assert_throws_dom("DataCloneError", () => worker.postMessage("test", [sab]));
}, "Trying to transfer a SharedArrayBuffer to a worker throws");

test(() => {
  const sab = new SharedArrayBuffer();
  const channel = new MessageChannel();
  assert_throws_dom("DataCloneError", () => channel.port1.postMessage(sab, [sab]));
  assert_throws_dom("DataCloneError", () => channel.port1.postMessage("test", [sab]));
}, "Trying to transfer a SharedArrayBuffer through a MessagePort throws");
</script>