var actualCode = `
 	alert(navigator.webdriver);

	Object.defineProperty(navigator, 'webdriver', {
	get: () => false,
	});

	alert(navigator.webdriver);

	Object.defineProperty(navigator, 'languages', {
		get: () => ['en-UK', 'en'],
	  });

	alert(navigator.languages);
`;

var script = document.createElement('script');
script.textContent = actualCode;
(document.head||document.documentElement).appendChild(script);
script.remove();