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docs: add note for Babel config #4197

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docs: add note for Babel config #4197

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4 changes: 3 additions & 1 deletion TROUBLESHOOTING.md
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Expand Up @@ -61,7 +61,7 @@ There is a good chance that the error message shows which module is affected:

In this case **some-module** is the problem and needs to be transformed.
By adding the following line to the configuration file it will tell Jest which modules
shouldnt be ignored during the transformation step:
shouldn't be ignored during the transformation step:

```javascript
module.exports = {
Expand All @@ -72,4 +72,6 @@ module.exports = {

**some-module** and **another-module** will be transformed.

Note that if you are using Babel with a `.babelrc` config file, you will need to rename it to `babel.config.json` in order to compile any part of `node_modules`, as described in the [Babel docs](https://babeljs.io/docs/configuration#whats-your-use-case).

For more information see [here](https://stackoverflow.com/questions/63389757/jest-unit-test-syntaxerror-cannot-use-import-statement-outside-a-module) and [here](https://stackoverflow.com/questions/52035066/how-to-write-jest-transformignorepatterns).