jest-environment-jsdom provides a JSDOM environment for Jest tests. This allows testing JavaScript code that relies on browser APIs, such as those provided by the Document Object Model (DOM), without needing a full browser. It's a popular choice for React, Vue, and other front-end libraries. This environment simulates a browser-like experience, enabling developers to write more comprehensive and accurate unit tests for their web-based applications directly from the command line. Includes features for managing the JSDOM instance and its configuration.