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3728 | update storyshots readme to include updating your moduleFileExtensions

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Stefan Kuijers 2018-06-20 14:24:40 +02:00
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addons/storyshots/storyshots-core/README.md
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@ -26,18 +26,18 @@ npm install --save-dev @storybook/addon-storyshots
``` ```
## Configure your app for Jest ## Configure your app for Jest
In many cases, for example Create React App, it's already configured for Jest. You just need to create a filename with the extension `.test.js`.
Usually, you might already have completed this step. If not, here are some resources for you. If you still need to configure jest you can use the resources mentioned below:
If you are using Create React App, it's already configured for Jest. You just need to create a filename with the extension `.test.js`.
If you aren't familiar with Jest, here are some resources:
- [Getting Started - Jest Official Documentation](https://facebook.github.io/jest/docs/en/getting-started.html) - [Getting Started - Jest Official Documentation](https://facebook.github.io/jest/docs/en/getting-started.html)
- [Javascript Testing with Jest - Egghead](https://egghead.io/lessons/javascript-test-javascript-with-jest). ***paid content*** - [Javascript Testing with Jest - Egghead](https://egghead.io/lessons/javascript-test-javascript-with-jest). ***paid content***
> Note: If you use React 16, you'll need to follow [these additional instructions](https://github.com/facebook/react/issues/9102#issuecomment-283873039). > Note: If you use React 16, you'll need to follow [these additional instructions](https://github.com/facebook/react/issues/9102#issuecomment-283873039).
> Note: Make sure you have added the ```json``` extention to ```moduleFileExtensions``` in ```jest.config.json```. If this is missing it leads to the [following error](https://github.com/storybooks/storybook/issues/3728): ```Cannot find module 'spdx-license-ids' from 'scan.js'```.
### Configure Jest to work with Webpack's [require.context()](https://webpack.js.org/guides/dependency-management/#require-context) ### Configure Jest to work with Webpack's [require.context()](https://webpack.js.org/guides/dependency-management/#require-context)
Sometimes it's useful to configure Storybook with Webpack's require.context feature: Sometimes it's useful to configure Storybook with Webpack's require.context feature: