fix(google,flutter): surface BillingResult debugMessage to callers

.github/workflows/ci.yml

@@ -88,6 +88,29 @@ jobs:
           test -f src/generated/Types.swift || exit 1
           test -f src/generated/types.dart || exit 1
 
+      - name: Verify generated types are committed (no drift)
+        run: |
+          # `bun run generate` is expected to be idempotent: running it
+          # against the checked-in schema must produce the same bytes
+          # as the files checked into the repo. If this step fails,
+          # somebody changed a codegen plugin or the schema without
+          # re-running `bun run generate` + committing the output.
+          #
+          # Use `git status --porcelain` (plus `git diff`) so newly-
+          # generated but untracked files also fail the check — a
+          # plain `git diff` would silently pass if the generator
+          # starts emitting a new target file.
+          status="$(git status --porcelain)"
+          if [ -n "$status" ] || ! git diff --exit-code; then
+            echo ""
+            echo "::error::Generated types differ from checked-in copies."
+            echo "Run 'cd packages/gql && bun run generate' locally and commit the result."
+            echo ""
+            echo "Untracked or modified paths:"
+            printf '%s\n' "$status"
+            exit 1
+          fi
+
   test-android:
     name: Test Android
     runs-on: ubuntu-latest

libraries/expo-iap/src/types.ts

@@ -350,6 +350,7 @@ export enum ErrorCode {
   RemoteError = 'remote-error',
   ServiceDisconnected = 'service-disconnected',
   ServiceError = 'service-error',
+  ServiceTimeout = 'service-timeout',
   SkuNotFound = 'sku-not-found',
   SkuOfferMismatch = 'sku-offer-mismatch',
   SyncError = 'sync-error',
@@ -1105,6 +1106,7 @@ export interface PurchaseCommon {
 
 export interface PurchaseError {
   code: ErrorCode;
+  debugMessage?: (string | null);
   message: string;
   productId?: (string | null);
 }

libraries/expo-iap/src/utils/errorMapping.ts

@@ -80,6 +80,7 @@ const COMMON_ERROR_CODE_MAP: Record<ErrorCode, string> = {
   [ErrorCode.BillingUnavailable]: ErrorCode.BillingUnavailable,
   [ErrorCode.FeatureNotSupported]: ErrorCode.FeatureNotSupported,
   [ErrorCode.DuplicatePurchase]: ErrorCode.DuplicatePurchase,
+  [ErrorCode.ServiceTimeout]: ErrorCode.ServiceTimeout,
   [ErrorCode.EmptySkuList]: ErrorCode.EmptySkuList,
   [ErrorCode.PurchaseVerificationFailed]: ErrorCode.PurchaseVerificationFailed,
   [ErrorCode.PurchaseVerificationFinishFailed]:

libraries/flutter_inapp_purchase/lib/helpers.dart

@@ -408,6 +408,9 @@ iap_err.PurchaseError convertToPurchaseError(
   return iap_err.PurchaseError(
     message: result.message ?? 'Unknown error',
     code: code,
+    responseCode: result.responseCode,
+    debugMessage: result.debugMessage,
+    platform: platform,
   );
 }
 

libraries/flutter_inapp_purchase/lib/types.dart

@@ -182,6 +182,7 @@ enum ErrorCode {
   ConnectionClosed('connection-closed'),
   InitConnection('init-connection'),
   ServiceDisconnected('service-disconnected'),
+  ServiceTimeout('service-timeout'),
   QueryProduct('query-product'),
   SkuNotFound('sku-not-found'),
   SkuOfferMismatch('sku-offer-mismatch'),
@@ -257,6 +258,8 @@ enum ErrorCode {
         return ErrorCode.InitConnection;
       case 'service-disconnected':
         return ErrorCode.ServiceDisconnected;
+      case 'service-timeout':
+        return ErrorCode.ServiceTimeout;
       case 'query-product':
         return ErrorCode.QueryProduct;
       case 'sku-not-found':
@@ -2570,17 +2573,20 @@ class PurchaseAndroid extends Purchase implements PurchaseCommon {
 class PurchaseError {
   const PurchaseError({
     required this.code,
+    this.debugMessage,
     required this.message,
     this.productId,
   });
 
   final ErrorCode code;
+  final String? debugMessage;
   final String message;
   final String? productId;
 
   factory PurchaseError.fromJson(Map<String, dynamic> json) {
     return PurchaseError(
       code: ErrorCode.fromJson(json['code'] as String),
+      debugMessage: json['debugMessage'] as String?,
       message: json['message'] as String,
       productId: json['productId'] as String?,
     );
@@ -2590,6 +2596,7 @@ class PurchaseError {
     return {
       '__typename': 'PurchaseError',
       'code': code.toJson(),
+      'debugMessage': debugMessage,
       'message': message,
       'productId': productId,
     };

libraries/flutter_inapp_purchase/test/helpers_unit_test.dart

@@ -1,6 +1,7 @@
 import 'dart:convert';
 
 import 'package:flutter_inapp_purchase/enums.dart';
+import 'package:flutter_inapp_purchase/errors.dart' as iap_err;
 import 'package:flutter_inapp_purchase/helpers.dart';
 import 'package:flutter_inapp_purchase/types.dart' as types;
 import 'package:flutter_test/flutter_test.dart';
@@ -582,5 +583,34 @@ void main() {
         );
       },
     );
+
+    test(
+      'convertToPurchaseError forwards debugMessage and responseCode '
+      'from PurchaseResult',
+      () {
+        final result = PurchaseResult.fromJSON(<String, dynamic>{
+          'responseCode': 5,
+          'debugMessage':
+              'Deferred replacement requires the base offer, got a promo offer',
+          'code': 'developer-error',
+          'message': 'Invalid arguments provided to the API',
+        });
+
+        final error = convertToPurchaseError(
+          result,
+          platform: types.IapPlatform.Android,
+        );
+
+        expect(error, isA<iap_err.PurchaseError>());
+        expect(error.code, types.ErrorCode.DeveloperError);
+        expect(error.message, 'Invalid arguments provided to the API');
+        expect(
+          error.debugMessage,
+          'Deferred replacement requires the base offer, got a promo offer',
+        );
+        expect(error.responseCode, 5);
+        expect(error.platform, types.IapPlatform.Android);
+      },
+    );
   });
 }