vitejs · Copilot · Oct 21, 2025 · Oct 21, 2025 · Oct 21, 2025 · Oct 21, 2025
diff --git a/packages/plugin-rsc/examples/browser-mode2/README.md b/packages/plugin-rsc/examples/browser-mode2/README.md
@@ -0,0 +1 @@
+[examples/no-ssr](https://github.com/vitejs/vite-plugin-react/tree/main/packages/plugin-rsc/examples/no-ssr) with `rsc` environment running on browser via module runner
diff --git a/packages/plugin-rsc/examples/browser-mode2/index.html b/packages/plugin-rsc/examples/browser-mode2/index.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <title>RSC Browser Mode 2</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <script async type="module" src="/src/framework/main.tsx"></script>
+  </head>
+  <body>
+    <div id="root"></div>
+  </body>
+</html>
diff --git a/packages/plugin-rsc/examples/browser-mode2/package.json b/packages/plugin-rsc/examples/browser-mode2/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "@vitejs/plugin-rsc-examples-browser-mode2",
+  "version": "0.0.0",
+  "private": true,
+  "license": "MIT",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0"
+  },
+  "devDependencies": {
+    "@types/react": "^19.2.2",
+    "@types/react-dom": "^19.2.2",
+    "@vitejs/plugin-react": "latest",
+    "@vitejs/plugin-rsc": "latest",
+    "vite": "^7.1.10"
+  }
+}
diff --git a/packages/plugin-rsc/examples/browser-mode2/public/vite.svg b/packages/plugin-rsc/examples/browser-mode2/public/vite.svg
diff --git a/packages/plugin-rsc/examples/browser-mode2/src/action.tsx b/packages/plugin-rsc/examples/browser-mode2/src/action.tsx
@@ -0,0 +1,11 @@
+'use server'
+
+let serverCounter = 0
+
+export async function getServerCounter() {
+  return serverCounter
+}
+
+export async function updateServerCounter(change: number) {
+  serverCounter += change
+}
diff --git a/packages/plugin-rsc/examples/browser-mode2/src/assets/react.svg b/packages/plugin-rsc/examples/browser-mode2/src/assets/react.svg
diff --git a/packages/plugin-rsc/examples/browser-mode2/src/client.tsx b/packages/plugin-rsc/examples/browser-mode2/src/client.tsx
@@ -0,0 +1,13 @@
+'use client'
+
+import React from 'react'
+
+export function ClientCounter() {
+  const [count, setCount] = React.useState(0)
+
+  return (
+    <button onClick={() => setCount((count) => count + 1)}>
+      Client Counter: {count}
+    </button>
+  )
+}
diff --git a/packages/plugin-rsc/examples/browser-mode2/src/framework/entry.browser.tsx b/packages/plugin-rsc/examples/browser-mode2/src/framework/entry.browser.tsx
@@ -0,0 +1,60 @@
+import * as React from 'react'
+import { createRoot } from 'react-dom/client'
+import {
+  createFromFetch,
+  setServerCallback,
+  createTemporaryReferenceSet,
+  encodeReply,
+} from '@vitejs/plugin-rsc/browser'
+import type { RscPayload } from './entry.rsc'
+
+let fetchServer: typeof import('./entry.rsc').fetchServer
+
+export function initialize(options: { fetchServer: typeof fetchServer }) {
+  fetchServer = options.fetchServer
+}
+
+export async function main() {
+  let setPayload: (v: RscPayload) => void
+
+  // Set server callback BEFORE processing the initial payload
+  setServerCallback(async (id, args) => {
+    const url = new URL(window.location.href)
+    const temporaryReferences = createTemporaryReferenceSet()
+    const payload = await createFromFetch<RscPayload>(
+      fetchServer(
+        new Request(url, {
+          method: 'POST',
+          body: await encodeReply(args, { temporaryReferences }),
+          headers: {
+            'x-rsc-action': id,
+          },
+        }),
+      ),
+      { temporaryReferences },
+    )
+    setPayload(payload)
+    return payload.returnValue
+  })
+
+  const initialPayload = await createFromFetch<RscPayload>(
+    fetchServer(new Request(window.location.href)),
+  )
+
+  function BrowserRoot() {
+    const [payload, setPayload_] = React.useState(initialPayload)
+
+    React.useEffect(() => {
+      setPayload = (v) => React.startTransition(() => setPayload_(v))
+    }, [setPayload_])
+
+    return payload.root
+  }
+
+  const browserRoot = (
+    <React.StrictMode>
+      <BrowserRoot />
+    </React.StrictMode>
+  )
+  createRoot(document.body).render(browserRoot)
+}
diff --git a/packages/plugin-rsc/examples/browser-mode2/src/framework/entry.rsc.tsx b/packages/plugin-rsc/examples/browser-mode2/src/framework/entry.rsc.tsx
@@ -0,0 +1,68 @@
+import {
+  renderToReadableStream,
+  createTemporaryReferenceSet,
+  decodeReply,
+  loadServerAction,
+  decodeAction,
+  decodeFormState,
+  setRequireModule,
+} from '@vitejs/plugin-rsc/react/rsc'
+import type { ReactFormState } from 'react-dom/client'
+import { Root } from '../root.tsx'
+
+export type RscPayload = {
+  root: React.ReactNode
+  returnValue?: unknown
+  formState?: ReactFormState
+}
+
+export function initialize() {
+  setRequireModule({
+    load: async (id) => {
+      return import(/* @vite-ignore */ id)
+    },
+  })
+}
+
+export async function fetchServer(request: Request): Promise<Response> {
+  const isAction = request.method === 'POST'
+  let returnValue: unknown | undefined
+  let formState: ReactFormState | undefined
+  let temporaryReferences: unknown | undefined
+  if (isAction) {
+    const actionId = request.headers.get('x-rsc-action')
+    if (actionId) {
+      const contentType = request.headers.get('content-type')
+      const body = contentType?.startsWith('multipart/form-data')
+        ? await request.formData()
+        : await request.text()
+      temporaryReferences = createTemporaryReferenceSet()
+      const args = await decodeReply(body, { temporaryReferences })
+      const action = await loadServerAction(actionId)
+      returnValue = await action.apply(null, args)
+    } else {
+      const formData = await request.formData()
+      const decodedAction = await decodeAction(formData)
+      const result = await decodedAction()
+      formState = await decodeFormState(result, formData)
+    }
+  }
+
+  const rscPayload: RscPayload = { root: <Root />, formState, returnValue }
+  const rscOptions = { temporaryReferences }
+  const rscStream = renderToReadableStream<RscPayload>(rscPayload, rscOptions)
+
+  return new Response(rscStream, {
+    headers: {
+      'content-type': 'text/x-component;charset=utf-8',
+      vary: 'accept',
+    },
+  })
+}
+
+// Default export for no-ssr mode compatibility
+export default fetchServer
+
+if (import.meta.hot) {
+  import.meta.hot.accept()
+}
diff --git a/packages/plugin-rsc/examples/browser-mode2/src/framework/load-client-dev.tsx b/packages/plugin-rsc/examples/browser-mode2/src/framework/load-client-dev.tsx
@@ -0,0 +1,25 @@
+import { ESModulesEvaluator, ModuleRunner } from 'vite/module-runner'
+
+export default async function loadClient() {
+  const runner = new ModuleRunner(
+    {
+      sourcemapInterceptor: false,
+      transport: {
+        invoke: async (payload) => {
+          const response = await fetch(
+            '/@vite/invoke-react-client?' +
+              new URLSearchParams({
+                data: JSON.stringify(payload),
+              }),
+          )
+          return response.json()
+        },
+      },
+      hmr: false,
+    },
+    new ESModulesEvaluator(),
+  )
+  return await runner.import<typeof import('./entry.browser')>(
+    '/src/framework/entry.browser.tsx',
+  )
+}
diff --git a/packages/plugin-rsc/examples/browser-mode2/src/framework/main.tsx b/packages/plugin-rsc/examples/browser-mode2/src/framework/main.tsx
@@ -0,0 +1,11 @@
+import * as server from './entry.rsc'
+import loadClient from 'virtual:vite-rsc-browser-mode2/load-client'
+
+async function main() {
+  const client = await loadClient()
+  server.initialize()
+  client.initialize({ fetchServer: server.fetchServer })
+  await client.main()
+}
+
+main()
diff --git a/packages/plugin-rsc/examples/browser-mode2/src/framework/virtual.d.ts b/packages/plugin-rsc/examples/browser-mode2/src/framework/virtual.d.ts
@@ -0,0 +1,4 @@
+declare module 'virtual:vite-rsc-browser-mode2/load-client' {
+  const loadClient: () => Promise<typeof import('./entry.browser')>
+  export default loadClient
+}
diff --git a/packages/plugin-rsc/examples/browser-mode2/src/index.css b/packages/plugin-rsc/examples/browser-mode2/src/index.css
@@ -0,0 +1,112 @@
+:root {
+  font-family: system-ui, Avenir, Helvetica, Arial, sans-serif;
+  line-height: 1.5;
+  font-weight: 400;
+
+  color-scheme: light dark;
+  color: rgba(255, 255, 255, 0.87);
+  background-color: #242424;
+
+  font-synthesis: none;
+  text-rendering: optimizeLegibility;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+a {
+  font-weight: 500;
+  color: #646cff;
+  text-decoration: inherit;
+}
+a:hover {
+  color: #535bf2;
+}
+
+body {
+  margin: 0;
+  display: flex;
+  place-items: center;
+  min-width: 320px;
+  min-height: 100vh;
+}
+
+h1 {
+  font-size: 3.2em;
+  line-height: 1.1;
+}
+
+button {
+  border-radius: 8px;
+  border: 1px solid transparent;
+  padding: 0.6em 1.2em;
+  font-size: 1em;
+  font-weight: 500;
+  font-family: inherit;
+  background-color: #1a1a1a;
+  cursor: pointer;
+  transition: border-color 0.25s;
+}
+button:hover {
+  border-color: #646cff;
+}
+button:focus,
+button:focus-visible {
+  outline: 4px auto -webkit-focus-ring-color;
+}
+
+@media (prefers-color-scheme: light) {
+  :root {
+    color: #213547;
+    background-color: #ffffff;
+  }
+  a:hover {
+    color: #747bff;
+  }
+  button {
+    background-color: #f9f9f9;
+  }
+}
+
+#root {
+  max-width: 1280px;
+  margin: 0 auto;
+  padding: 2rem;
+  text-align: center;
+}
+
+.logo {
+  height: 6em;
+  padding: 1.5em;
+  will-change: filter;
+  transition: filter 300ms;
+}
+.logo:hover {
+  filter: drop-shadow(0 0 2em #646cffaa);
+}
+.logo.react:hover {
+  filter: drop-shadow(0 0 2em #61dafbaa);
+}
+
+@keyframes logo-spin {
+  from {
+    transform: rotate(0deg);
+  }
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+@media (prefers-reduced-motion: no-preference) {
+  a:nth-of-type(2) .logo {
+    animation: logo-spin infinite 20s linear;
+  }
+}
+
+.card {
+  padding: 1rem;
+}
+
+.read-the-docs {
+  color: #888;
+  text-align: left;
+}
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		[examples/no-ssr](https://github.com/vitejs/vite-plugin-react/tree/main/packages/plugin-rsc/examples/no-ssr) with `rsc` environment running on browser via module runner