@react-native/jest-preset

@react-native/jest-preset

Jest preset for React Native apps.

Usage

Installation

Install @react-native/jest-preset in your app:

with npm:

npm i @react-native/jest-preset --save-dev

or with yarn:

yarn add -D @react-native/jest-preset

Configuring Jest

Then, create a file called jest.config.js in your project's root directory. Then load this preset:

module.exports = {
  preset: '@react-native/jest-preset',
};

You can further customize your Jest configuration by specifying other options. See Jest's jest.config.js documentation to learn more.

Migration Note

This Jest preset used to be part of the core react-native package and accessible at react-native/jest-preset.js. As long as @react-native/jest-preset is installed, react-native/jest-preset.js will be aliased to this package and continue to work but is deprecated.

Follow the installation instructions above to migrate to @react-native/jest-preset and change preset: 'react-native' to preset: '@react-native/jest-preset to migrate.