React: Refactor RSC out of Next

MIGRATION.md

@@ -32,6 +32,7 @@
     - [Next.js](#nextjs)
       - [Require Next.js 13.5 and up](#require-nextjs-135-and-up)
       - [Automatic SWC mode detection](#automatic-swc-mode-detection)
+      - [RSC config moved to React renderer](#rsc-config-moved-to-react-renderer)
     - [Angular](#angular)
       - [Require Angular 15 and up](#require-angular-15-and-up)
     - [Svelte](#svelte)
@@ -66,17 +67,17 @@
     - [`createChannel` from `@storybook/postmessage` and `@storybook/channel-websocket`](#createchannel-from-storybookpostmessage-and-storybookchannel-websocket)
     - [StoryStore and methods deprecated](#storystore-and-methods-deprecated)
 - [From version 7.5.0 to 7.6.0](#from-version-750-to-760)
-  - [CommonJS with Vite is deprecated](#commonjs-with-vite-is-deprecated)
-  - [Using implicit actions during rendering is deprecated](#using-implicit-actions-during-rendering-is-deprecated)
-  - [typescript.skipBabel deprecated](#typescriptskipbabel-deprecated)
-  - [Primary doc block accepts of prop](#primary-doc-block-accepts-of-prop)
-  - [Addons no longer need a peer dependency on React](#addons-no-longer-need-a-peer-dependency-on-react)
+    - [CommonJS with Vite is deprecated](#commonjs-with-vite-is-deprecated)
+    - [Using implicit actions during rendering is deprecated](#using-implicit-actions-during-rendering-is-deprecated)
+    - [typescript.skipBabel deprecated](#typescriptskipbabel-deprecated)
+    - [Primary doc block accepts of prop](#primary-doc-block-accepts-of-prop)
+    - [Addons no longer need a peer dependency on React](#addons-no-longer-need-a-peer-dependency-on-react)
 - [From version 7.4.0 to 7.5.0](#from-version-740-to-750)
-  - [`storyStoreV6` and `storiesOf` is deprecated](#storystorev6-and-storiesof-is-deprecated)
-  - [`storyIndexers` is replaced with `experimental_indexers`](#storyindexers-is-replaced-with-experimental_indexers)
+    - [`storyStoreV6` and `storiesOf` is deprecated](#storystorev6-and-storiesof-is-deprecated)
+    - [`storyIndexers` is replaced with `experimental_indexers`](#storyindexers-is-replaced-with-experimental_indexers)
 - [From version 7.0.0 to 7.2.0](#from-version-700-to-720)
-  - [Addon API is more type-strict](#addon-api-is-more-type-strict)
-  - [Addon-controls hideNoControlsWarning parameter is deprecated](#addon-controls-hidenocontrolswarning-parameter-is-deprecated)
+    - [Addon API is more type-strict](#addon-api-is-more-type-strict)
+    - [Addon-controls hideNoControlsWarning parameter is deprecated](#addon-controls-hidenocontrolswarning-parameter-is-deprecated)
 - [From version 6.5.x to 7.0.0](#from-version-65x-to-700)
   - [7.0 breaking changes](#70-breaking-changes)
     - [Dropped support for Node 15 and below](#dropped-support-for-node-15-and-below)
@@ -728,6 +729,12 @@ Similar to how Next.js detects if SWC should be used, Storybook will follow more
 - If you use Next.js 14 or higher and you don't have a .babelrc file, Storybook will use SWC to transpile your code.
 - Even if you have a .babelrc file, Storybook will still use SWC to transpile your code if you set the experimental `experimental.forceSwcTransforms` flag to `true` in your `next.config.js`.
 
+##### RSC config moved to React renderer
+
+Storybook 7.6 introduced a new feature flag, `experimentalNextRSC`, to enable React Server Components in a Next.js project. It also introduced a parameter `nextjs.rsc` to selectively disable it on particular components or stories.
+
+These flags have been renamed to `experimentalRSC` and `react.rsc`, respectively. This is a breaking change to accommodate RSC support in other, non-Next.js frameworks. For now, `@storybook/nextjs` is the only framework that supports it, and does so experimentally.
+
 #### Angular
 
 ##### Require Angular 15 and up

code/frameworks/nextjs/README.md

@@ -907,13 +907,13 @@ Storybook handles most [Typescript](https://www.typescriptlang.org/) configurati
 
 If your app uses [React Server Components (RSC)](https://nextjs.org/docs/app/building-your-application/rendering/server-components), Storybook can render them in stories in the browser.
 
-To enable this set the `experimentalNextRSC` feature flag in your `.storybook/main.js` config:
+To enable this set the `experimentalRSC` feature flag in your `.storybook/main.js` config:
 
 ```js
 // main.js
 export default {
   features: {
-    experimentalNextRSC: true,
+    experimentalRSC: true,
   },
 };
 ```

code/frameworks/nextjs/package.json

@@ -42,7 +42,6 @@
       "import": "./dist/font/webpack/loader/storybook-nextjs-font-loader.mjs"
     },
     "./dist/preview.mjs": "./dist/preview.mjs",
-    "./dist/rsc/preview.mjs": "./dist/rsc/preview.mjs",
     "./next-image-loader-stub.js": {
       "types": "./dist/next-image-loader-stub.d.ts",
       "require": "./dist/next-image-loader-stub.js",
@@ -164,7 +163,6 @@
       "./src/images/next-legacy-image.tsx",
       "./src/images/next-image.tsx",
       "./src/font/webpack/loader/storybook-nextjs-font-loader.ts",
-      "./src/rsc/preview.tsx",
       "./src/rsc/server-only.ts",
       "./src/swc/next-swc-loader-patch.ts"
     ],

code/frameworks/nextjs/src/preset.ts

@@ -76,9 +76,6 @@ export const previewAnnotations: PresetProperty<'previewAnnotations'> = (
 ) => {
   const nextDir = dirname(require.resolve('@storybook/nextjs/package.json'));
   const result = [...entry, join(nextDir, 'dist/preview.mjs')];
-  if (features?.experimentalNextRSC) {
-    result.unshift(join(nextDir, 'dist/rsc/preview.mjs'));
-  }
   return result;
 };
 
@@ -170,7 +167,7 @@ export const webpackFinal: StorybookConfig['webpackFinal'] = async (baseConfig,
     configureFastRefresh(baseConfig);
   }
 
-  if (options.features?.experimentalNextRSC) {
+  if (options.features?.experimentalRSC) {
     configureRSC(baseConfig);
   }
 

code/lib/cli/src/sandbox-templates.ts

@@ -124,7 +124,7 @@ const baseTemplates = {
     },
     modifications: {
       mainConfig: {
-        features: { experimentalNextRSC: true },
+        features: { experimentalRSC: true },
       },
       extraDependencies: ['server-only'],
     },
@@ -142,7 +142,7 @@ const baseTemplates = {
     },
     modifications: {
       mainConfig: {
-        features: { experimentalNextRSC: true },
+        features: { experimentalRSC: true },
       },
       extraDependencies: ['server-only'],
     },
@@ -159,7 +159,7 @@ const baseTemplates = {
     },
     modifications: {
       mainConfig: {
-        features: { experimentalNextRSC: true },
+        features: { experimentalRSC: true },
       },
       extraDependencies: ['server-only'],
     },
@@ -176,7 +176,7 @@ const baseTemplates = {
     },
     modifications: {
       mainConfig: {
-        features: { experimentalNextRSC: true },
+        features: { experimentalRSC: true },
       },
       extraDependencies: ['server-only'],
     },

code/lib/types/src/modules/core-common.ts

@@ -373,9 +373,9 @@ export interface StorybookConfigRaw {
     disallowImplicitActionsInRenderV8?: boolean;
 
     /**
-     * Enable asynchronous component rendering in NextJS framework
+     * Enable asynchronous component rendering in React renderer
      */
-    experimentalNextRSC?: boolean;
+    experimentalRSC?: boolean;
   };
 
   build?: TestBuildConfig;

code/renderers/react/package.json

@@ -29,6 +29,7 @@
     "./preset": "./preset.js",
     "./dist/entry-preview.mjs": "./dist/entry-preview.mjs",
     "./dist/entry-preview-docs.mjs": "./dist/entry-preview-docs.mjs",
+    "./dist/entry-preview-rsc.mjs": "./dist/entry-preview-rsc.mjs",
     "./package.json": "./package.json"
   },
   "main": "dist/index.js",
@@ -64,13 +65,15 @@
     "lodash": "^4.17.21",
     "prop-types": "^15.7.2",
     "react-element-to-jsx-string": "^15.0.0",
+    "semver": "^7.3.7",
     "ts-dedent": "^2.0.0",
     "type-fest": "~2.19",
     "util-deprecate": "^1.0.2"
   },
   "devDependencies": {
     "@storybook/test": "workspace:*",
     "@types/babel-plugin-react-docgen": "^4",
+    "@types/semver": "^7.3.4",
     "@types/util-deprecate": "^1.0.0",
     "babel-plugin-react-docgen": "^4.2.1",
     "expect-type": "^0.15.0",
@@ -97,7 +100,8 @@
       "./src/index.ts",
       "./src/preset.ts",
       "./src/entry-preview.ts",
-      "./src/entry-preview-docs.ts"
+      "./src/entry-preview-docs.ts",
+      "./src/entry-preview-rsc.tsx"
     ],
     "platform": "browser"
   },

code/renderers/react/src/entry-preview-rsc.tsx

@@ -0,0 +1,31 @@
+import * as React from 'react';
+import semver from 'semver';
+import type { Addon_DecoratorFunction } from '@storybook/types';
+import type { StoryContext } from './types';
+
+export const ServerComponentDecorator = (
+  Story: React.FC,
+  { parameters }: StoryContext
+): React.ReactNode => {
+  if (!parameters?.react?.rsc) return <Story />;
+
+  const major = semver.major(React.version);
+  const minor = semver.minor(React.version);
+  if (major < 18 || (major === 18 && minor < 3)) {
+    throw new Error('React Server Components require React >= 18.3');
+  }
+
+  return (
+    <React.Suspense>
+      <Story />
+    </React.Suspense>
+  );
+};
+
+export const decorators: Addon_DecoratorFunction<any>[] = [ServerComponentDecorator];
+
+export const parameters = {
+  react: {
+    rsc: true,
+  },
+};

code/renderers/react/src/preset.ts

@@ -17,7 +17,8 @@ export const previewAnnotations: PresetProperty<'previewAnnotations'> = async (
   return result
     .concat(input)
     .concat([join(__dirname, 'entry-preview.mjs')])
-    .concat(docsEnabled ? [join(__dirname, 'entry-preview-docs.mjs')] : []);
+    .concat(docsEnabled ? [join(__dirname, 'entry-preview-docs.mjs')] : [])
+    .concat(FEATURES?.experimentalRSC ? [join(__dirname, 'entry-preview-rsc.mjs')] : []);
 };
 
 /**

code/renderers/react/src/typings.d.ts

@@ -1,3 +1,4 @@
 declare var STORYBOOK_ENV: 'react';
 declare var FRAMEWORK_OPTIONS: any;
 declare var LOGLEVEL: 'trace' | 'debug' | 'info' | 'warn' | 'error' | 'silent' | undefined;
+declare var FEATURES: import('@storybook/types').StorybookConfigRaw['features'];

code/yarn.lock

@@ -6346,6 +6346,7 @@ __metadata:
     "@types/escodegen": "npm:^0.0.6"
     "@types/estree": "npm:^0.0.51"
     "@types/node": "npm:^18.0.0"
+    "@types/semver": "npm:^7.3.4"
     "@types/util-deprecate": "npm:^1.0.0"
     acorn: "npm:^7.4.1"
     acorn-jsx: "npm:^5.3.1"
@@ -6358,6 +6359,7 @@ __metadata:
     prop-types: "npm:^15.7.2"
     react-element-to-jsx-string: "npm:^15.0.0"
     require-from-string: "npm:^2.0.2"
+    semver: "npm:^7.3.7"
     ts-dedent: "npm:^2.0.0"
     type-fest: "npm:~2.19"
     util-deprecate: "npm:^1.0.2"