# CSA Commands

## `npm start` or `yarn start`

Runs the app in development mode. Will open the [http://localhost:3000](http://localhost:3000/) to preview changes in your default browser.

{% hint style="info" %}
The page will automatically reload if you make changes to the code. You will see the build errors and lint warnings in the console.
{% endhint %}

## `npm run build` or `yarn build`

Builds the app for production to the `build` folder. It correctly bundles React in production mode and optimizes the build for the best performance. The build files will be minified and the filenames will include the hashes. Your app is ready to be deployed.

{% hint style="info" %}
Looking for CMA commands? Please refer to the [CMA documentation](https://docs.create-magento-app.com/getting-started/available-commands).
{% endhint %}


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