babel-jest
Jest plugin for Babel that automatically transforms JavaScript files using Babel during Jest testing.
What is babel-jest?
babel-jest is a Jest plugin that automatically applies Babel transformations to JavaScript files during Jest test execution. It solves the problem of testing modern JavaScript code (like ES6+, TypeScript, or JSX) that requires compilation, ensuring tests run on the transformed code seamlessly.
JavaScript developers using Jest for testing in projects that rely on Babel for transpilation, such as those with modern ES6+ features, TypeScript, or React JSX.
Developers choose babel-jest because it's the official, fully integrated Babel solution for Jest, requiring minimal configuration and automatically handling transformations based on existing Babel setups, reducing test setup complexity.
Overview
Jest plugin for Babel (moved) ->
Use Cases
Best For
- Testing React components with JSX syntax in Jest
- Running Jest tests on TypeScript code without separate compilation steps
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