Missing beginRefundRequest implementation in Flutter SDK

[nero-angela]

Thanks for creating and maintaining this package.

It looks like beginRefundRequestIOS is declared in types.dart as an interface, but there doesn’t seem to be an actual implementation provided.

Could you please add support for this method?

[hyochan]

Hi @nero-angela, thanks for the detailed report. You were right — beginRefundRequestIOS was declared in types.dart but had no actual Dart implementation or iOS method-channel bridge.

Fixed in #105 for Flutter, along with every other instance of the same pattern found via a full audit across all 5 wrapper SDKs:

• flutter_inapp_purchase: added beginRefundRequestIOS plus 6 other declared-but-unwired iOS query handlers (currentEntitlementIOS, latestTransactionIOS, isTransactionVerifiedIOS, getTransactionJwsIOS, getReceiptDataIOS, canPresentExternalPurchaseNoticeIOS), fixed channel-name drift on syncIOS/subscriptionStatusIOS/getAppTransactionIOS, and wired 4 more handlers into the handlers bundle.
• kmp-iap: replaced 5 UnsupportedOperationException stubs in iosMain with real ObjC bridge calls.
• expo-iap / react-native-iap: added missing deprecated aliases (consumePurchaseAndroid, getStorefrontIOS, validateReceiptIOS).
• godot-iap: added validate_receipt, validate_receipt_ios, and 3 ExternalPurchaseCustomLink iOS 18.1+ methods end-to-end.
• packages/apple: added 2 ObjC bridge methods so KMP cinterop can reach them.
• knowledge: added an SDK Parity Checklist so future schema additions can't reintroduce phantom interfaces.

After this PR, every handler declared in each library's generated types has a complete runtime path. beginRefundRequestIOS(sku) will ship in the next flutter_inapp_purchase release.

Leaving this issue open until #105 merges and the release goes out.

[hyochan]

Shipped in flutter_inapp_purchase 9.2.3 via #105.

beginRefundRequestIOS(sku) now has a full runtime path — Dart getter + Swift method-channel bridge + wiring into the MutationHandlers bundle. Should be live on pub.dev shortly.

Closing. Thanks again for the report!