The code above executes a command using the Chrome DevTools...

The code above executes a command using the Chrome DevTools Protocol (CDP) to add a script that will be evaluated on every new page load. The script modifies the navigator object of the browser's JavaScript runtime by defining a new property called webdriver.

The webdriver property is set to a getter function that always returns undefined. This is a technique used to detect and thwart automated browser testing tools, such as Selenium WebDriver.

By adding this script to every new page load, the webdriver property will be undefined, making it harder for automated tests to identify that they are running in a controlled environment.