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    27.0.3 • Public • Published


    A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript.

    NPM version NPM downloads Known vulnerabilities Coverage status GitHub actions GitHub license

    It supports all features of TypeScript including type-checking. Read more about Babel7 + preset-typescript vs TypeScript (and ts-jest).

    We are not doing semantic versioning and 23.10 is a re-write, run npm i -D ts-jest@"<23.10.0" to go back to the previous version

    View the online documentation (usage & technical)

    Ask for some help in the Jest Discord community or ts-jest GitHub Discussion

    Before reporting any issues, be sure to check the troubleshooting page

    We're looking for collaborators! Want to help improve ts-jest?

    Getting Started

    These instructions will get you setup to use ts-jest in your project. For more detailed documentation, please check online documentation.

    using npm using yarn
    Prerequisites npm i -D jest typescript yarn add --dev jest typescript
    Installing npm i -D ts-jest @types/jest yarn add --dev ts-jest @types/jest
    Creating config npx ts-jest config:init yarn ts-jest config:init
    Running tests npm t or npx jest yarn test or yarn jest

    Built With


    Please read for details on our code of conduct, and the process for submitting pull requests to us.


    We DO NOT use SemVer for versioning. Though you can think about SemVer when reading our version, except our major number follows the one of Jest. For the versions available, see the tags on this repository.


    See also the list of contributors who participated in this project.



    This project is licensed under the MIT License - see the file for details


    npm i ts-jest

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