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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>isBoolean — boxed</title>
</head>
<body>
  <h1>Boxed Boolean</h1>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    var boxed = new Boolean(false);
    var lines = [
      "isBoolean: " + _.isBoolean(boxed),
      "typeof === boolean: " + (typeof boxed === "boolean"),
      "Boolean(boxed): " + Boolean(boxed)
    ];
    document.getElementById("out").textContent = lines.join("\n");
  </script>
</body>
</html>

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Lodash _.isBoolean — boxed Boolean (Try It)