Jest

About Jest

Jest is a JavaScript testing framework focused on simplicity and fast iteration, designed to work out of the box with minimal configuration. It supports unit and integration testing with features like snapshot testing, parallel test execution, and built-in code coverage. Jest integrates well with Babel, TypeScript, Node, and popular front-end frameworks such as React, Angular, and Vue, and it provides a rich API for mocking and assertion tools. The project is global, with documentation and resources available for JavaScript developers worldwide.