# `@react-navigation/core`

Core utilities for building navigators independent of the platform.

## Installation

Open a Terminal in your project's folder and run,

```sh
yarn add @react-navigation/core
```

## Usage

A basic custom navigator bundling a router and a view looks like this:

```js
import { createNavigatorFactory, useNavigationBuilder } from '@react-navigation/core';
import { StackRouter } from '@react-navigation/routers';

function StackNavigator({ initialRouteName, children, ...rest }) {
  const { state, navigation, descriptors } = useNavigationBuilder(StackRouter, {
    initialRouteName,
    children,
  });

  return (
    <StackView
      state={state}
      navigation={navigation}
      descriptors={descriptors}
      {...rest}
    />
  );
}

export default createNavigatorFactory(StackNavigator);
```