What is Nightwatch?

Nightwatch.js is an open-source, automated testing framework primarily used for end-to-end (E2E) testing of web applications and websites. It's written in Node.js and uses the W3C WebDriver API (formerly Selenium WebDriver) to interact with various browsers like Chrome, Firefox, Safari, and Edge. Nightwatch simplifies the process of writing and running automated tests by providing a clean syntax and built-in commands for common tasks like navigating web pages, interacting with elements, and asserting expected outcomes. It's commonly used by developers and QA engineers to ensure the quality and reliability of web applications through automated testing.