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chromium/third_party/blink/web_tests/external/wpt/wasm/serialization/module/window-messagechannel-success.html 

<!DOCTYPE html>
<!-- Based on similar tests in html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/ -->
<meta charset="utf-8">
<title>Structured cloning of WebAssembly.Module using MessageChannel</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="./resources/test-incrementer.js"></script>

<div id="log"></div>

<script>
"use strict";

promise_test(t => {
  const worker = new Worker("resources/incrementer-worker-with-channel.js");
  const channel = new MessageChannel();
  worker.postMessage(channel.port2, [channel.port2]);

  return testSharingViaIncrementerScript(t, channel.port1, "window", channel.port1, "worker");
}, "postMessaging to a dedicated worker via MessageChannel allows them to instantiate");
</script>