Jest is a powerful JavaScript testing framework that simplifies the process of writing tests for JavaScript applications. It was developed by Facebook and has quickly become one of the most popular testing libraries, especially in the React ecosystem. Jest makes it easy for developers to write tests with zero configuration, run tests in parallel, and generate detailed reports. It also integrates well with other libraries like React Testing Library and Enzyme.

Whether you’re working with small utility functions, React components, or large-scale Node.js applications, Jest provides everything you need to ensure your code is well-tested.
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