Jest

Jest is a testing framework used by developers to ensure their code works correctly. It allows them to write tests—specific instructions that check if different parts of a program behave as expected. By running these tests regularly, developers can catch errors early and maintain high-quality, reliable software. Jest is popular for its ease of use, speed, and built-in features like automated testing and real-time feedback. Essentially, it helps programmers verify that their code does what it’s supposed to do, making software development more efficient and dependable.