Square Expo Plugin

An Expo Config Plugin for the Square In-App Payments SDK that makes it easy to accept payments in your React Native app. This plugin handles all the necessary iOS and Android configuration for the Square SDK.

Features

• Configures Apple Pay for iOS with merchant identifiers
• Adds Google Pay support for Android (optional)
• Handles all required build configurations for both platforms
• Sets up Square In-App Payments SDK build scripts correctly

Installation

npm install --dev square-expo-plugin
# or
yarn add --dev square-expo-plugin

Configuration

Add the plugin to your Expo config in app.json or app.config.js:

{
  "expo": {
    "plugins": [
      [
        "square-expo-plugin",
        {
          "merchantIdentifier": "merchant.com.yourcompany.app",
          "enableGooglePay": true
        }
      ]
    ]
  }
}

Configuration Options

Option	Type	Description	Default
merchantIdentifier	string or string[]	Apple Pay merchant identifier(s)	[]
enableGooglePay	boolean	Enable Google Pay support for Android	false

Usage

After installing and configuring the plugin, you can use the Square In-App Payments SDK in your app:

import { initializePaymentForm } from "react-native-square-in-app-payments";

// Follow Square SDK documentation for usage

Refer to the Square React Native In-App Payments SDK documentation for complete usage instructions.

Requirements

• Expo SDK 52 or higher
• react-native-square-in-app-payments ^1.7.6

How It Works

This plugin:

1. Adds the required merchant identifiers for Apple Pay to your iOS entitlements
2. Creates a necessary Swift compatibility file
3. Configures the Square payment SDK build scripts
4. Sets up Google Pay metadata in Android Manifest (if enabled)

Troubleshooting

iOS

• If you see "Missing merchant identifier" errors, check that you've provided the correct merchantIdentifier in your plugin config
• Ensure you've set up your Apple Pay merchant account correctly in the Apple Developer Portal

Android

• For Google Pay issues, verify your Square developer account is properly configured for Google Pay

License

MIT

Contributing

Contributions are welcome! Please feel free to submit a pull request.