Check out a free preview of the full Testing JavaScript Applications (feat. React and Redux) course:
The "Removing JSDOM" Lesson is part of the full, Testing JavaScript Applications (feat. React and Redux) course featured in this preview video. Here's what you'd learn in this lesson:

Kent shows that JSDom, a JavaScript based headless browser that can be used to create a realistic testing environment, is a part of Jest, which can be removed for faster performance testing within Jest if you are working primarily in node.

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