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v2.8.1 Release - Type System Improvements

· One min read
Hyo
Hyo
Expo IAP Maintainer

This release resolves type mismatches between Product and Purchase types across iOS and Android platforms.

What's New​

Type System Improvements​

  • Added platform field to all types for runtime type discrimination
  • Moved common fields (ids, debugDescription) to shared base types
  • Fixed iOS native code to populate missing subscription fields

No Breaking Changes​

All existing code continues to work. Update to platform-specific field names before v2.9.0:

  • Android: name → nameAndroid
  • iOS: displayName → displayNameIOS

Important Note​

If upgrading from versions before v2.8.0, please review the v2.8.0 migration guide first, as it contains breaking changes for iOS field naming conventions.

Type Discrimination Example​

import {Product, Purchase} from 'expo-iap';

function handleProduct(product: Product) {
  if (product.platform === 'ios') {
    // TypeScript knows this is ProductIOS
    console.log(product.isFamilyShareableIOS);
  } else if (product.platform === 'android') {
    // TypeScript knows this is ProductAndroid
    console.log(product.nameAndroid);
  }
}

Installation​

npm install expo-iap@2.8.1

Next Steps​

Deprecated fields will be removed in v2.9.0. Update your code now to ensure smooth migration.

For details, see the full changelog.