# Installation > `npm install --save @types/jest` # Summary This package contains type definitions for Jest (https://jestjs.io/). # Details Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/jest. ### Additional Details * Last updated: Sat, 07 Mar 2020 01:52:57 GMT * Dependencies: none * Global values: `afterAll`, `afterEach`, `beforeAll`, `beforeEach`, `describe`, `expect`, `fail`, `fdescribe`, `fit`, `it`, `jasmine`, `jest`, `pending`, `spyOn`, `test`, `xdescribe`, `xit`, `xtest` # Credits These definitions were written by [Asana (https://asana.com) // Ivo Stratev](https://github.com/NoHomey), [jwbay](https://github.com/jwbay), [Alexey Svetliakov](https://github.com/asvetliakov), [Alex Jover Morales](https://github.com/alexjoverm), [Allan Lukwago](https://github.com/epicallan), [Ika](https://github.com/ikatyang), [Waseem Dahman](https://github.com/wsmd), [Jamie Mason](https://github.com/JamieMason), [Douglas Duteil](https://github.com/douglasduteil), [Ahn](https://github.com/ahnpnl), [Josh Goldberg](https://github.com/joshuakgoldberg), [Jeff Lau](https://github.com/UselessPickles), [Andrew Makarov](https://github.com/r3nya), [Martin Hochel](https://github.com/hotell), [Sebastian Sebald](https://github.com/sebald), [Andy](https://github.com/andys8), [Antoine Brault](https://github.com/antoinebrault), [Jeroen Claassens](https://github.com/favna), [Gregor Stamać](https://github.com/gstamac), [ExE Boss](https://github.com/ExE-Boss), [Alex Bolenok](https://github.com/quassnoi), [Mario Beltrán Alarcón](https://github.com/Belco90), [Tony Hallett](https://github.com/tonyhallett), [Jason Yu](https://github.com/ycmjason), [Devansh Jethmalani](https://github.com/devanshj), and [Pawel Fajfer](https://github.com/pawfa).