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[![Deploy to now ](https://deploy.now.sh/static/button.svg )](https://deploy.now.sh/?repo=https://github.com/zeit/next.js/tree/master/examples/with-custom-babel-config)
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# Example app using custom babel config
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Download the example [or clone the repo ](https://github.com/zeit/next.js ):
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```bash
curl https://codeload.github.com/zeit/next.js/tar.gz/master | tar -xz --strip=2 next.js-master/examples/with-custom-babel-config
cd with-custom-babel-config
```
Install it and run:
```bash
npm install
npm run dev
```
Deploy it to the cloud with [now ](https://zeit.co/now ) ([download](https://zeit.co/download))
```bash
now
```
## The idea behind the example
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This example features:
* An app using proposed [do expressions ](https://babeljs.io/docs/plugins/transform-do-expressions/ ).
* It uses babel-preset-stage-0, which allows us to use above JavaScript feature.
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* It uses '.babelrc' file in the app directory to add above preset.
> Most of the time, when writing a custom `.babelrc` file, you need to add `next/babel` as a preset.
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## How to run it
```sh
npm install
npm run dev
```