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<!DOCTYPE html>
<html>
<head>
  <title>Test page for dispatchKeyEvent race test</title>
</head>
<body>
  <input type="text">
  <script type="text/javascript">
    window.testValue = "initial-value";

    // Small helper to synchronously pause for a given delay, in ms.
    function sleep(delay) {
      const start = Date.now();
      while (Date.now() - start < delay) {
        // Wait for the condition to fail.
      }
    }

    document.querySelector("input").addEventListener("input", () => {
      // Block the execution synchronously for one second.
      sleep(1000);
      // Update the value that will be checked by the test.
      window.testValue = document.querySelector("input").value;
    });
  </script>
</body>
</html>