fix: pr feedback

Author: Jorrin

packages/openapi-ts-tests/main/test/__snapshots__/2.0.x/plugins/@tanstack/react-query/responseStyle/@tanstack/react-query.gen.ts

@@ -181,7 +181,8 @@ export const createInfiniteQueryOptions = ({
 
   if (plugin.config.responseStyle === 'fields') {
     // --- 'fields' code path: TStyle generic, ResponseResult/ResponseError wrappers ---
-    const defaultStyle = plugin.config.responseStyle;
+    // Default to 'data' so omitting responseStyle preserves backward-compatible behavior
+    const defaultStyle = 'data' as const;
 
     const symbolResponseResult = plugin.referenceSymbol({
       category: 'type',

packages/openapi-ts-tests/main/test/__snapshots__/3.0.x/plugins/@tanstack/react-query/responseStyle/@tanstack/react-query.gen.ts

@@ -33,7 +33,8 @@ export const createMutationOptions = ({
 
   if (plugin.config.responseStyle === 'fields') {
     // --- 'fields' code path: TStyle generic, ResponseResult/ResponseError wrappers ---
-    const defaultStyle = plugin.config.responseStyle;
+    // Default to 'data' so omitting responseStyle preserves backward-compatible behavior
+    const defaultStyle = 'data' as const;
 
     const symbolResponseResult = plugin.referenceSymbol({
       category: 'type',
@@ -178,7 +179,7 @@ export const createMutationOptions = ({
       },
     );
     const statement = $.const(symbolMutationOptions)
-      .export()
+      .export(plugin.config.mutationOptions.exported)
       .$if(plugin.config.comments && createOperationComment(operation), (c, v) => c.doc(v))
       .assign(
         $.func()

packages/openapi-ts-tests/main/test/__snapshots__/3.1.x/plugins/@tanstack/react-query/responseStyle/@tanstack/react-query.gen.ts

@@ -1,7 +1,6 @@
 import ts from 'typescript';
 
-import { TsDsl } from '../../../../ts-dsl';
-import { $ } from '../../../../ts-dsl';
+import { $, TsDsl } from '../../../../ts-dsl';
 import type { PluginHandler, PluginInstance } from '../types';
 import { createInfiniteQueryOptions } from './infiniteQueryOptions';
 import { createMutationOptions } from './mutationOptions';
@@ -168,7 +167,8 @@ export const handlerV5: PluginHandler = ({ plugin }) => {
 
   // Generate ResponseResult and ResponseError utility types only when responseStyle is 'fields'
   if (plugin.config.responseStyle === 'fields') {
-    createResponseStyleTypes(plugin.config.responseStyle, plugin);
+    // Default to 'data' so omitting responseStyle preserves backward-compatible behavior
+    createResponseStyleTypes('data', plugin);
   }
 
   plugin.forEach(

packages/openapi-ts/src/plugins/@tanstack/query-core/v5/infiniteQueryOptions.ts

@@ -60,7 +60,8 @@ export const createQueryOptions = ({
 
   if (plugin.config.responseStyle === 'fields') {
     // --- 'fields' code path: TStyle generic, ResponseResult/ResponseError wrappers ---
-    const defaultStyle = plugin.config.responseStyle;
+    // Default to 'data' so omitting responseStyle preserves backward-compatible behavior
+    const defaultStyle = 'data' as const;
 
     const symbolResponseResult = plugin.referenceSymbol({
       category: 'type',