npm package: @purepetfood/stripe-terminal-react-native
Description: Stripe Terminal React Native SDK
Author: Stripe
Latest version: 0.0.1-beta.17

# Stripe Terminal React Native SDK (Beta)

Stripe Terminal enables you to build your own in-person checkout to accept payments in the physical world. Built on Stripe's payments network, Terminal helps you unify your online and offline payment channels. With the Stripe Terminal React Native SDK, you can connect to pre-certified card readers from your React Native app and drive a customized in-store checkout flow.

- [Getting started](#getting-started)
- [Requirements](#requirements)
  - [JS](#js)
  - [Android](#android)
  - [iOS](#ios)
- [Try the example app](#try-the-example-app)
- [Installation](#installation)
- [Example code](#example-code)
  - [Initialization](#initialization)
  - [Hooks and events](#hooks-and-events)
- [Additional docs](#additional-docs)
- [Contributing](#contributing)

## Getting started

> Note: The below docs are not yet available and will be released as we near open beta

Get started with our [📚 integration guides](https://stripe.com/docs/terminal/payments/setup-sdk?terminal-sdk-platform=react-native) and [example project](https://stripe.com/docs/terminal/example-applications?terminal-sdk-platform=react-native), or [📘 browse the SDK reference](https://stripe.dev/stripe-terminal-react-native).

Updating to a newer version of the SDK? See our [release notes](https://github.com/stripe/stripe-terminal-react-native/releases).

## Requirements

### JS

- The SDK uses TypeScript features available in Babel version `7.9.0` and above.
  Alternatively use the `plugin-transform-typescript` plugin in your project.

### Android

- Android API level 26 and above
  * Note that attempting to override minSdkVersion to decrease the minimum supported API level will not work due to internal runtime API level validation. Furthermore, Stripe is updating the Terminal Android SDK to support Google’s recently released Android 14 (SDK 34). Please continue to target SDK 33 in the meantime as there are known issues with mPOS devices and TTP when targeting SDK 34. Please track the following [ticket](https://github.com/stripe/stripe-terminal-android/issues/387) for updates on progress.
- compileSdkVersion = 33
- targetSdkVersion = 31

### iOS

- Compatible with apps targeting iOS 13 or above.

## Try the example app

The React Native SDK includes an open-source example app, which you can use to familiarize yourself with the SDK and reader before starting your own integration.

To build the example app from source, you'll need to:

1. Run `yarn bootstrap` from the root directory to build the SDK.
2. Navigate to our [example backend](https://github.com/stripe/example-terminal-backend) and click the button to deploy it on Heroku.
3. Navigate to the `example-app` folder and run `yarn install` to install all example app dependencies.
4. Copy `.env.example` to `.env`, and set the URL of the Heroku app you just deployed.
5. Run either `yarn ios` or `yarn android` depending on which platform you would like to build.

## Installation

```sh
yarn add @stripe/stripe-terminal-react-native
```

or

```sh
npm install @stripe/stripe-terminal-react-native
```

## Example code

### Initialization

To initialize Stripe Terminal SDK in your React Native app, use the `StripeTerminalProvider` component in the root component of your application.

First, create an endpoint on your backend server that creates a new connection token via the Stripe Terminal API.

Next, create a token provider that will fetch connection token from your server and provide it to StripeTerminalProvider as a parameter.
Stripe Terminal SDK will fetch it when it's needed.

```tsx
// Root.tsx
import { StripeTerminalProvider } from '@stripe/stripe-terminal-react-native';

function Root() {
  const fetchTokenProvider = async () => {
    const response = await fetch(`${API_URL}/connection_token`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
    });
    const { secret } = await response.json();
    return secret;
  };

  return (
    <StripeTerminalProvider
      logLevel="verbose"
      tokenProvider={fetchTokenProvider}
    >
      <App />
    </StripeTerminalProvider>
  );
}
```

As a last step, simply call `initialize` method from `useStripeTerminal` hook.
Please note that `initialize` method must be called from a nested component of `StripeTerminalProvider`.

```tsx
// App.tsx
function App() {
  const { initialize } = useStripeTerminal();

  useEffect(() => {
    initialize();
  }, [initialize]);

  return <View />;
}
```

### Hooks and events

Stripe Terminal SDK provides dedicated hook which exposes bunch of methods and props to be used within your App.
Additionally, you have access to the internal state of SDK that contains information about the current connection, discovered readers and loading state.

```tsx
// PaymentScreen.tsx

import { useStripeTerminal } from '@stripe/stripe-terminal-react-native';

export default function PaymentScreen() {
  const { discoverReaders, connectedReader, discoveredReaders } =
    useStripeTerminal({
      onUpdateDiscoveredReaders: (readers) => {
        // access to discovered readers
      },
      onDidChangeConnectionStatus: (status) => {
        // access to the current connection status
      },
    });

  useEffect(() => {
    const { error } = await discoverReaders({
      discoveryMethod: 'bluetoothScan',
      simulated: true,
    });
  }, [discoverReaders]);

  return <View />;
}
```

In case your app uses `React Class Components` you can use dedicated `withStripeTerminal` Higher-Order-Component.
Please note that unlike the hooks approach, you need to use event emitter to listen on specific events that comes from SDK.

[Here](https://github.com/stripe/stripe-terminal-react-native/blob/main/src/hooks/useStripeTerminal.tsx#L51) you can find the list of available events to be used within the event emitter.

Example:

```tsx
// PaymentScreen.tsx

import {
  withStripeTerminal,
  WithStripeTerminalProps,
  CHANGE_CONNECTION_STATUS,
  Reader,
} from '@stripe/stripe-terminal-react-native';

class PaymentScreen extends React.Component {
  componentDidMount() {
    this.discoverReaders();
    const eventSubscription = props.emitter.addListener(
      CHANGE_CONNECTION_STATUS, // didChangeConnectionStatus
      (status: Reader.ConnectionStatus) => {
        // access to the current connection status
      }
    );
  }
  async discoverReaders() {
    this.props.discoverReaders({
      discoveryMethod: 'bluetoothScan',
      simulated,
    });
  }
}

export default withStripeTerminal(PaymentScreen);
```

## Additional docs

- [Running e2e tests locally](https://github.com/stripe/stripe-terminal-react-native/blob/main/docs/e2e-tests.md)

## Contributing

See the [contributor guidelines](https://github.com/stripe/stripe-terminal-react-native/blob/main/CONTRIBUTING.md) to learn how to contribute to the repository.