docs: fix tanstack start demo (#1196)

* docs: fix tanstack start demo

* ci: apply automated fixes and generate docs

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

Author: crutchcorn

examples/react/tanstack-start/app/routes/index.tsx

@@ -1,7 +1,8 @@
 import { createFileRoute } from '@tanstack/react-router'
 import { mergeForm, useForm, useTransform } from '@tanstack/react-form'
 import { useStore } from '@tanstack/react-store'
-import { formOpts, getFormDataFromServer, handleForm } from '~/utils/form'
+import { getFormDataFromServer, handleForm } from '~/utils/form'
+import { formOpts } from '~/utils/form-isomorphic'
 
 export const Route = createFileRoute('/')({
   component: Home,

examples/react/tanstack-start/app/utils/form-isomorphic.ts

@@ -0,0 +1,8 @@
+import { formOptions } from '@tanstack/react-form'
+
+export const formOpts = formOptions({
+  defaultValues: {
+    firstName: '',
+    age: 0,
+  },
+})

examples/react/tanstack-start/app/utils/form.tsx

@@ -1,18 +1,11 @@
 import { createServerFn } from '@tanstack/react-start'
-import { formOptions } from '@tanstack/react-form'
 import {
   ServerValidateError,
   createServerValidate,
   getFormData,
 } from '@tanstack/react-form/start'
 import { setResponseStatus } from '@tanstack/react-start/server'
-
-export const formOpts = formOptions({
-  defaultValues: {
-    firstName: '',
-    age: 0,
-  },
-})
+import { formOpts } from './form-isomorphic'
 
 const serverValidate = createServerValidate({
   ...formOpts,