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- Add comprehensive image test document with various image types - Update project structure with development artifacts - Prepare foundation for image support enhancement phase - Include test files for validating image editing workflows 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
44 lines
1.4 KiB
Markdown
44 lines
1.4 KiB
Markdown
# babel-jest
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[Babel](https://github.com/babel/babel) [jest](https://github.com/jestjs/jest) plugin
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## Usage
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If you are already using `jest-cli`, add `babel-jest` and it will automatically compile JavaScript code using Babel.
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```bash
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yarn add --dev babel-jest @babel/core
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```
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If you would like to write your own preprocessor, uninstall and delete babel-jest and set the [config.transform](https://jestjs.io/docs/configuration#transform-object-string-string) option to your preprocessor.
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## Setup
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_Note: this step is only required if you are using `babel-jest` with additional code preprocessors._
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To explicitly define `babel-jest` as a transformer for your JavaScript code, map _.js_ files to the `babel-jest` module. Typescript files are also supported.
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By default, it loads your existing Babel configuration (if any)
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```json
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"transform": {
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"\\.[jt]sx?$": "babel-jest"
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},
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```
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You can also pass further [babel options](https://babeljs.io/docs/options)
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```json
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"transform": {
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"\\.[jt]sx?$": ["babel-jest", { "extends": "./babel.config.js", "plugins": ["babel-plugin-transform-import-meta"] }]
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},
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```
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By default, `babel-jest` includes `babel-preset-jest`. In addition to the babel options, we introduce a new option, `excludeJestPreset`, which allows you to disable this behavior. Note that this will break `jest.mock` hoisting.
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```json
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"transform": {
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"\\.[jt]sx?$": ["babel-jest", { "excludeJestPreset": true }],
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}
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```
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