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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
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 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:
If you still need to configure jest you can use the resources mentioned below:
- [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***
> 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)
Sometimes it's useful to configure Storybook with Webpack's require.context feature: