# Project Tree & Script Structure

![](https://3241674717-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-L_DfhjIgb2njPA7L1mD%2F-L_Md8IInR72abJDZo30%2F-L_Mek-U55NltxhkALsq%2Fimage.png?alt=media\&token=496da73c-6927-4997-a389-f3f4cbe89e3a)

The above is the default structure. We should also create following items

```
/
|- src
|- components         # Storing the customized components
|- index.ios.js
|- index.android.js
```

Always Create one component for a file

```jsx
// Index.ios.js - place code in here for iOS!!!

//  Import a library to help create a component
import React from 'react';
// import ReactNative from 'react-native';
// Access Object inside the library React Native: components in ReactNative
import { Text, AppRegistry } from 'react-native';

// Create a component by using the liibraries
// A component is a javascript function that return JSX Object

// {} is a JS Function, () is a JSX Object
const App = () => (
    <Text>Some Text</Text> // Text is primitive component
);

// Render the components to the device
// Please take this component and show it on the screen
// At least register one component to the app, when app is start, it will render the assigned component

// ReactNative.AppRegistry.registerComponent('albums', () => App);
AppRegistry.registerComponent('albums', () => App);
```

![](https://3241674717-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-L_DfhjIgb2njPA7L1mD%2F-L_QS-yn_dKxzLLjdPz2%2F-L_QSHeaX5_kQlfJiLFK%2Fimage.png?alt=media\&token=8498d762-9c30-4635-b2ce-540e649f146d)

```jsx
// import libraries for making a component
import React from 'react';
import { Text } from 'react-native';
import Header from "./src/components/header" # Custom Component

// Make a component
const Header = () => {
    return <Text>Albums!</Text>;
};

// Make the component available to another parts of the app
export default Header;
```

### Reference:

* [Babel · The compiler for writing next generation JavaScript](http://babeljs.io)


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