useFormState -> useActionState

Kept the transform support since useFormState still exists.

docs/02-app/01-building-your-application/02-data-fetching/02-server-actions-and-mutations.mdx

@@ -358,10 +358,10 @@ export default async function createsUser(formData) {
 }
 ```
 
-Once the fields have been validated on the server, you can return a serializable object in your action and use the React [`useFormState`](https://react.dev/reference/react-dom/hooks/useFormState) hook to show a message to the user.
+Once the fields have been validated on the server, you can return a serializable object in your action and use the React [`useActionState`](https://react.dev/reference/react-dom/hooks/useActionState) hook to show a message to the user.
 
-- By passing the action to `useFormState`, the action's function signature changes to receive a new `prevState` or `initialState` parameter as its first argument.
-- `useFormState` is a React hook and therefore must be used in a Client Component.
+- By passing the action to `useActionState`, the action's function signature changes to receive a new `prevState` or `initialState` parameter as its first argument.
+- `useActionState` is a React hook and therefore must be used in a Client Component.
 
 ```tsx filename="app/actions.ts" switcher
 'use server'
@@ -385,20 +385,20 @@ export async function createUser(prevState, formData) {
 }
 ```
 
-Then, you can pass your action to the `useFormState` hook and use the returned `state` to display an error message.
+Then, you can pass your action to the `useActionState` hook and use the returned `state` to display an error message.
 
 ```tsx filename="app/ui/signup.tsx" switcher
 'use client'
 
-import { useFormState } from 'react-dom'
+import { useActionState } from 'react'
 import { createUser } from '@/app/actions'
 
 const initialState = {
   message: '',
 }
 
 export function Signup() {
-  const [state, formAction] = useFormState(createUser, initialState)
+  const [state, formAction] = useActionState(createUser, initialState)
 
   return (
     <form action={formAction}>
@@ -417,15 +417,15 @@ export function Signup() {
 ```jsx filename="app/ui/signup.js" switcher
 'use client'
 
-import { useFormState } from 'react-dom'
+import { useActionState } from 'react'
 import { createUser } from '@/app/actions'
 
 const initialState = {
   message: '',
 }
 
 export function Signup() {
-  const [state, formAction] = useFormState(createUser, initialState)
+  const [state, formAction] = useActionState(createUser, initialState)
 
   return (
     <form action={formAction}>
@@ -739,7 +739,7 @@ export async function createTodo(prevState, formData) {
 
 > **Good to know:**
 >
-> - Aside from throwing the error, you can also return an object to be handled by `useFormState`. See [Server-side validation and error handling](#server-side-validation-and-error-handling).
+> - Aside from throwing the error, you can also return an object to be handled by `useActionState`. See [Server-side validation and error handling](#server-side-validation-and-error-handling).
 
 ### Revalidating data
 
@@ -1002,5 +1002,5 @@ For more information on Server Actions, check out the following React docs:
 - [`"use server"`](https://react.dev/reference/react/use-server)
 - [`<form>`](https://react.dev/reference/react-dom/components/form)
 - [`useFormStatus`](https://react.dev/reference/react-dom/hooks/useFormStatus)
-- [`useFormState`](https://react.dev/reference/react-dom/hooks/useFormState)
+- [`useActionState`](https://react.dev/reference/react-dom/hooks/useActionState)
 - [`useOptimistic`](https://react.dev/reference/react/useOptimistic)

docs/02-app/01-building-your-application/09-authentication/index.mdx

@@ -29,7 +29,7 @@ The examples on this page walk through basic username and password auth for educ
 
 ### Sign-up and login functionality
 
-You can use the [`<form>`](https://react.dev/reference/react-dom/components/form) element with React's [Server Actions](/docs/app/building-your-application/rendering/server-components), [`useFormStatus()`](https://react.dev/reference/react-dom/hooks/useFormStatus), and [`useFormState()`](https://react.dev/reference/react-dom/hooks/useFormState) to capture user credentials, validate form fields, and call your Authentication Provider's API or database.
+You can use the [`<form>`](https://react.dev/reference/react-dom/components/form) element with React's [Server Actions](/docs/app/building-your-application/rendering/server-components), [`useFormStatus()`](https://react.dev/reference/react-dom/hooks/useFormStatus), and [`useActionState()`](https://react.dev/reference/react/useActionState) to capture user credentials, validate form fields, and call your Authentication Provider's API or database.
 
 Since Server Actions always execute on the server, they provide a secure environment for handling authentication logic.
 
@@ -200,16 +200,16 @@ export async function signup(state, formData) {
 }
 ```
 
-Back in your `<SignupForm />`, you can use React's `useFormState()` hook to display validation errors to the user:
+Back in your `<SignupForm />`, you can use React's `useActionState()` hook to display validation errors to the user:
 
 ```tsx filename="app/ui/signup-form.tsx" switcher highlight={7,15,21,27-36}
 'use client'
 
-import { useFormState } from 'react-dom'
+import { useActionState } from 'react'
 import { signup } from '@/app/actions/auth'
 
 export function SignupForm() {
-  const [state, action] = useFormState(signup, undefined)
+  const [state, action] = useActionState(signup, undefined)
 
   return (
     <form action={action}>
@@ -248,11 +248,11 @@ export function SignupForm() {
 ```jsx filename="app/ui/signup-form.js" switcher highlight={7,15,21,27-36}
 'use client'
 
-import { useFormState } from 'react-dom'
+import { useActionState } from 'react'
 import { signup } from '@/app/actions/auth'
 
 export function SignupForm() {
-  const [state, action] = useFormState(signup, undefined)
+  const [state, action] = useActionState(signup, undefined)
 
   return (
     <form action={action}>
@@ -293,7 +293,8 @@ You can also use the `useFormStatus()` hook to handle the pending state on form
 ```tsx filename="app/ui/signup-form.tsx" highlight={7} switcher
 'use client'
 
-import { useFormStatus, useFormState } from 'react-dom'
+import { useActionState } from 'react'
+import { useFormStatus } from 'react-dom'
 
 export function SignupButton() {
   const { pending } = useFormStatus()
@@ -309,7 +310,8 @@ export function SignupButton() {
 ```jsx filename="app/ui/signup-form.js"  highlight={7} switcher
 'use client'
 
-import { useFormStatus, useFormState } from 'react-dom'
+import { useActionState } from 'react'
+import { useFormStatus } from 'react-dom'
 
 export function SignupButton() {
   const { pending } = useFormStatus()

examples/next-forms/app/add-form.tsx

@@ -1,6 +1,7 @@
 "use client";
 
-import { useFormState, useFormStatus } from "react-dom";
+import { useActionState } from 'react'
+import { useFormStatus } from 'react-dom'
 import { createTodo } from "@/app/actions";
 
 const initialState = {
@@ -18,7 +19,7 @@ function SubmitButton() {
 }
 
 export function AddForm() {
-  const [state, formAction] = useFormState(createTodo, initialState);
+  const [state, formAction] = useActionState(createTodo, initialState);
 
   return (
     <form action={formAction}>

examples/next-forms/app/delete-form.tsx

@@ -1,6 +1,7 @@
 "use client";
 
-import { useFormState, useFormStatus } from "react-dom";
+import { useActionState } from 'react'
+import { useFormStatus } from 'react-dom'
 import { deleteTodo } from "@/app/actions";
 
 const initialState = {
@@ -18,7 +19,7 @@ function DeleteButton() {
 }
 
 export function DeleteForm({ id, todo }: { id: number; todo: string }) {
-  const [state, formAction] = useFormState(deleteTodo, initialState);
+  const [state, formAction] = useActionState(deleteTodo, initialState);
 
   return (
     <form action={formAction}>

examples/with-fauna/components/EntryForm.tsx

@@ -3,7 +3,9 @@
 import cn from "classnames";
 import { createEntryAction } from "@/actions/entry";
 // @ts-ignore
-import { useFormState, useFormStatus } from "react-dom";
+import { useActionState } from 'react'
+// @ts-ignore
+import { useFormStatus } from 'react-dom'
 import LoadingSpinner from "@/components/LoadingSpinner";
 import SuccessMessage from "@/components/SuccessMessage";
 import ErrorMessage from "@/components/ErrorMessage";
@@ -20,7 +22,7 @@ const initialState = {
 };
 
 export default function EntryForm() {
-  const [state, formAction] = useFormState(createEntryAction, initialState);
+  const [state, formAction] = useActionState(createEntryAction, initialState);
   const { pending } = useFormStatus();
 
   return (

packages/next-swc/crates/next-custom-transforms/src/transforms/react_server_components.rs

@@ -506,6 +506,7 @@ impl ReactServerComponentValidator {
                         "useSyncExternalStore",
                         "useTransition",
                         "useOptimistic",
+                        "useActionState"
                     ],
                 ),
                 (

packages/next-swc/crates/next-custom-transforms/tests/errors/react-server-components/server-graph/react-dom-api/input.js

@@ -1,5 +1,7 @@
 import { flushSync, unstable_batchedUpdates } from 'react-dom'
 
+import { useActionState } from 'react'
+
 import { useFormStatus, useFormState } from 'react-dom'
 
 export default function () {

packages/next-swc/crates/next-custom-transforms/tests/errors/react-server-components/server-graph/react-dom-api/output.js

@@ -1,4 +1,5 @@
 import {  flushSync, unstable_batchedUpdates } from 'react-dom';
+import { useActionState } from 'react'
 import { useFormStatus, useFormState } from 'react-dom';
 export default function() {
     return null;

packages/next/src/server/typescript/constant.ts

@@ -40,6 +40,7 @@ export const DISALLOWED_SERVER_REACT_APIS: string[] = [
   'createFactory',
   'experimental_useOptimistic',
   'useOptimistic',
+  'useActionState',
 ]
 
 export const DISALLOWED_SERVER_REACT_DOM_APIS: string[] = [

test/development/acceptance-app/fixtures/rsc-build-errors/app/server-with-errors/react-apis/useActionState/page.js

@@ -0,0 +1,7 @@
+import { useActionState } from 'react'
+
+console.log({ useActionState })
+
+export default function Page() {
+  return null
+}

test/development/acceptance-app/rsc-build-errors.test.ts

@@ -262,6 +262,7 @@ describe('Error overlay - RSC build errors', () => {
     'useSyncExternalStore',
     'useTransition',
     'useOptimistic',
+    'useActionState',
   ]
   for (const api of invalidReactServerApis) {
     it(`should error when ${api} from react is used in server component`, async () => {

test/e2e/app-dir/actions/app-action-form-state.test.ts

@@ -2,7 +2,7 @@
 import { nextTestSetup } from 'e2e-utils'
 import { check } from 'next-test-utils'
 
-describe('app-dir action useFormState', () => {
+describe('app-dir action useActionState', () => {
   const { next } = nextTestSetup({
     files: __dirname,
     dependencies: {

test/e2e/app-dir/actions/app/client/action-return-client-component/form.js

@@ -1,8 +1,8 @@
 'use client'
-import { useFormState } from 'react-dom'
+import { useActionState } from 'react'
 
 export function Form({ action }) {
-  const [state, formAction] = useFormState(action, null)
+  const [state, formAction] = useActionState(action, null)
   return (
     <>
       <form action={formAction}>

test/e2e/app-dir/actions/app/client/form-state/page-2/page.js

@@ -1,11 +1,11 @@
 'use client'
 
-import { useFormState } from 'react-dom'
+import { useActionState } from 'react'
 import { appendName } from '../actions'
 import { useEffect, useState } from 'react'
 
 export default function Page() {
-  const [state, appendNameFormAction] = useFormState(
+  const [state, appendNameFormAction] = useActionState(
     appendName,
     'initial-state',
     '/client/form-state'

test/e2e/app-dir/actions/app/client/form-state/page.js

@@ -1,11 +1,11 @@
 'use client'
 
-import { useFormState } from 'react-dom'
+import { useActionState } from 'react'
 import { appendName } from './actions'
 import { useEffect, useState } from 'react'
 
 export default function Page() {
-  const [state, appendNameFormAction] = useFormState(
+  const [state, appendNameFormAction] = useActionState(
     appendName,
     'initial-state',
     '/client/form-state'

test/e2e/app-dir/actions/app/server/action-return-client-component/form.js

@@ -1,8 +1,8 @@
 'use client'
-import { useFormState } from 'react-dom'
+import { useActionState } from 'react'
 
 export function Form({ action }) {
-  const [state, formAction] = useFormState(action, null)
+  const [state, formAction] = useActionState(action, null)
   return (
     <>
       <form action={formAction}>

test/e2e/app-dir/navigation/app/popstate-revalidate/foo/page.tsx

@@ -1,10 +1,10 @@
 'use client'
 
-import { useFormState } from 'react-dom'
+import { useActionState } from 'react'
 import { action } from './action'
 
 export default function Page() {
-  const [submitted, formAction] = useFormState(action, false)
+  const [submitted, formAction] = useActionState(action, false)
   if (submitted) {
     return <div>Form Submitted.</div>
   }

test/turbopack-build-tests-manifest.json

@@ -95,10 +95,10 @@
     "test/e2e/app-dir/actions/app-action-form-state.test.ts": {
       "passed": [],
       "failed": [
-        "app-dir action useFormState should send the action to the provided permalink with form state when JS disabled",
-        "app-dir action useFormState should support hydrating the app from progressively enhanced form request",
-        "app-dir action useFormState should support submitting form state with JS",
-        "app-dir action useFormState should support submitting form state without JS"
+        "app-dir action useActionState should send the action to the provided permalink with form state when JS disabled",
+        "app-dir action useActionState should support hydrating the app from progressively enhanced form request",
+        "app-dir action useActionState should support submitting form state with JS",
+        "app-dir action useActionState should support submitting form state without JS"
       ],
       "pending": [],
       "flakey": [],