#Installation

Setting up expo-document-scanner in your project is straightforward. Because it relies on native modules, there are a few platform-specific steps handled automatically by Expo.

#Prerequisites

• React Native 0.73 or higher
• Expo SDK 50 or higher (if using Expo)
• react-native-nitro-modules

#Installing the Package

Using npm:

npm install expo-document-scanner react-native-nitro-modules

Using Yarn:

yarn add expo-document-scanner react-native-nitro-modules

Using Expo CLI:

npx expo install expo-document-scanner react-native-nitro-modules

#Setup for Expo Managed Workflow

Since this library uses native code (VisionKit on iOS and ML Kit on Android), you cannot use it with Expo Go. You must create a development build.

#1. Add Plugins (If necessary)

In your app.json or app.config.js, ensure you have the required permissions. The plugin usually handles this automatically, but if you need to specify camera permissions manually:

{
  "expo": {
    "plugins": [
      [
        "expo-document-scanner",
        {
          "cameraPermission": "Allow $(PRODUCT_NAME) to access your camera to scan documents."
        }
      ]
    ]
  }
}

#2. Create a Development Build

Run the following command to create your development build:

npx expo run:ios
# or
npx expo run:android

#Setup for Bare React Native

If you are not using Expo, you need to install the CocoaPods dependencies for iOS:

cd ios
pod install
cd ..

For Android, auto-linking will handle the native dependencies. Just ensure your minSdkVersion is at least 24 in android/build.gradle.

Now you're ready to move on to the Quick Start guide!