microsoft · Dmytro Kirpa (dmytrokirpa) · Sep 16, 2026 · Sep 15, 2026 · Sep 15, 2026 · Sep 16, 2026
@@ -288,6 +288,7 @@ packages/react-components/react-breadcrumb/stories @microsoft/cxe-prg
 packages/react-components/react-drawer/library @microsoft/cxe-prg @mainframev
 packages/react-components/react-drawer/stories @microsoft/cxe-prg @mainframev
 packages/react-components/react-storybook-addon-export-to-sandbox @microsoft/fluentui-react-build
+packages/react-components/react-storybook-addon-playground @microsoft/fluentui-react-build
 packages/react-components/babel-preset-storybook-full-source @microsoft/fluentui-react-build
 packages/react-components/react-jsx-runtime @microsoft/teams-prg
 packages/react-components/react-toast/library @microsoft/teams-prg

@@ -16,6 +16,7 @@
     "@fluentui/react-headless-components-preview": "*",
     "@fluentui/react-storybook-addon": "*",
     "@fluentui/react-storybook-addon-export-to-sandbox": "*",
+    "@fluentui/react-storybook-addon-playground": "*",
     "react": "19.2.0",
     "react-dom": "19.2.0",
     "tslib": "^2.1.0"

@@ -8,15 +8,27 @@
     "build-storybook": {
       "dependsOn": [
         {
-          "projects": ["react-storybook-addon", "react-storybook-addon-export-to-sandbox", "storybook-llms-extractor"],
+          "projects": [
+            "react-headless-components-preview",
+            "react-storybook-addon",
+            "react-storybook-addon-export-to-sandbox",
+            "react-storybook-addon-playground",
+            "storybook-llms-extractor"
+          ],
           "target": "build"
         }
       ]
     },
     "build-storybook:docsite": {
       "dependsOn": [
         {
-          "projects": ["react-storybook-addon", "react-storybook-addon-export-to-sandbox", "storybook-llms-extractor"],
+          "projects": [
+            "react-headless-components-preview",
+            "react-storybook-addon",
+            "react-storybook-addon-export-to-sandbox",
+            "react-storybook-addon-playground",
+            "storybook-llms-extractor"
+          ],
           "target": "build"
         }
       ],

diff --git a/...luentui-react-storybook-addon-export-to-sandbox-bfb6dbfb-a9e5-47e0-b04d-be8d1f1d4399.json b/...luentui-react-storybook-addon-export-to-sandbox-bfb6dbfb-a9e5-47e0-b04d-be8d1f1d4399.json
@@ -0,0 +1,6 @@
+{
+  "type": "patch",
+  "comment": "fix: ignore buttons added by the playground addon when locating the Show code toggle",
+  "packageName": "@fluentui/react-storybook-addon-export-to-sandbox",
+  "email": "dmytrokirpa@microsoft.com"
+}
diff --git a/change/@fluentui-react-storybook-addon-playground-99650265-91f2-458b-bfdb-cf5dda68c498.json b/change/@fluentui-react-storybook-addon-playground-99650265-91f2-458b-bfdb-cf5dda68c498.json
@@ -0,0 +1,6 @@
+{
+  "type": "patch",
+  "comment": "feat: add @fluentui/react-storybook-addon-playground package scaffold",
+  "packageName": "@fluentui/react-storybook-addon-playground",
+  "email": "dmytrokirpa@microsoft.com"
+}
@@ -0,0 +1 @@
+declare module '*.css';
@@ -7,23 +7,55 @@ const {
   processBabelLoaderOptions,
 } = require('@fluentui/scripts-storybook');
 const { registerCssModuleRules } = require('./css-modules-webpack');
+const headlessPackageJson = require('../../library/package.json');
 
 const repoRoot = path.resolve(__dirname, '../../../../..');
 const tsConfigPath = path.resolve(repoRoot, 'tsconfig.base.json');
+const HEADLESS_PACKAGE_NAME = '@fluentui/react-headless-components-preview';
 
 /**
+ * Headless Storybook replaces the root sandbox addon with a CSS-modules-aware one, and registers
+ * the playground here only (not on the shared v9 Storybook).
+ *
  * @param {string | { name?: string }} addon
  */
-function isNotExportToSandboxAddon(addon) {
+function isNotRootSandboxOrPlaygroundAddon(addon) {
   const name = typeof addon === 'string' ? addon : addon?.name ?? '';
-  return !name.includes('react-storybook-addon-export-to-sandbox');
+  return (
+    !name.includes('react-storybook-addon-export-to-sandbox') && !name.includes('react-storybook-addon-playground')
+  );
+}
+
+/**
+ * Maps every published subpath of the headless package (plus react-icons) into the playground allowlist.
+ * Skips `.` — the barrel is empty, and Storybook only has a tsconfig path for `package/*` (source),
+ * not the package root (built `lib/index.js`, which CI `build-storybook` does not produce).
+ *
+ * @returns {Record<string, string>}
+ */
+function getHeadlessPlaygroundModules() {
+  /** @type {Record<string, string>} */
+  const modules = {
+    '@fluentui/react-icons': '@fluentui/react-icons',
+  };
+
+  for (const exportPath of Object.keys(headlessPackageJson.exports ?? {})) {
+    if (exportPath === '.' || exportPath === './package.json') {
+      continue;
+    }
+
+    const specifier = `${HEADLESS_PACKAGE_NAME}${exportPath.slice(1)}`;
+    modules[specifier] = specifier;
+  }
+
+  return modules;
 }
 
 module.exports = /** @type {Omit<import('../../../../../.storybook/main'), 'typescript'|'babel'>} */ ({
   ...rootMain,
   stories: [...rootMain.stories, '../src/**/*.mdx', '../src/**/index.stories.@(ts|tsx)'],
   addons: [
-    ...rootMain.addons.filter(isNotExportToSandboxAddon),
+    ...rootMain.addons.filter(isNotRootSandboxOrPlaygroundAddon),
     loadWorkspaceAddon('@fluentui/react-storybook-addon-export-to-sandbox', {
       tsConfigPath,
       /** @type {import('../../../react-storybook-addon-export-to-sandbox/src/index').PresetConfig} */
@@ -37,6 +69,15 @@ module.exports = /** @type {Omit<import('../../../../../.storybook/main'), 'type
         },
       },
     }),
+    /** {@link file://./../../../react-storybook-addon-playground/package.json} */
+    loadWorkspaceAddon('@fluentui/react-storybook-addon-playground', {
+      tsConfigPath,
+      /** @type {import('../../../react-storybook-addon-playground/src/index').PresetConfig} */
+      options: {
+        modules: getHeadlessPlaygroundModules(),
+        setup: path.resolve(__dirname, './playground.setup.tsx'),
+      },
+    }),
   ],
   webpackFinal: (config, options) => {
     const localConfig = /** @type {any} */ ({ ...rootMain.webpackFinal(config, options) });

@@ -0,0 +1,52 @@
+import * as React from 'react';
+import { polyfillBodyAndObserve } from '@microsoft/focusgroup-polyfill/shadowless';
+import { Provider } from '@fluentui/react-headless-components-preview/provider';
+import { definePlaygroundSetup } from '@fluentui/react-storybook-addon-playground/setup';
+
+import './tokens.css';
+
+polyfillBodyAndObserve();
+
+type HeadlessPlaygroundTheme = 'light' | 'dark';
+
+const defaultCode = `import * as React from 'react';
+import { Button } from '@fluentui/react-headless-components-preview/button';
+
+export default () => {
+  const [count, setCount] = React.useState(0);
+
+  return (
+    <Button
+      onClick={() => setCount(count + 1)}
+      style={{
+        height: 32,
+        padding: '0 14px',
+        border: 0,
+        borderRadius: 999,
+        background: 'var(--accent)',
+        color: 'var(--accent-contrast)',
+        cursor: 'pointer',
+      }}
+    >
+      Clicked {count} times
+    </Button>
+  );
+};
+`;
+
+export default definePlaygroundSetup<HeadlessPlaygroundTheme>({
+  title: 'Fluent UI Playground',
+  subtitle: 'Headless',
+  defaultCode,
+  themes: [
+    { id: 'light', label: 'Light', value: 'light', dark: false },
+    { id: 'dark', label: 'Dark', value: 'dark', dark: true },
+  ],
+  render: ({ Component, theme }) => (
+    <Provider>
+      <div data-theme={theme ?? 'light'} style={{ minHeight: '100%', background: 'var(--bg)', color: 'var(--text)' }}>
+        <Component />
+      </div>
+    </Provider>
+  ),
+});
@@ -1,4 +1,5 @@
 import { polyfillBodyAndObserve } from '@microsoft/focusgroup-polyfill/shadowless';
+import '../../../react-storybook-addon-playground/src/styles.css';
 
 import * as rootPreview from '../../../../../.storybook/preview';
 

@@ -7,5 +7,5 @@
     "moduleResolution": "bundler",
     "types": ["static-assets", "environment"]
   },
-  "include": ["*.js"]
+  "include": ["*.js", "*.tsx", "*.d.ts"]
 }
@@ -4,5 +4,23 @@
   "projectType": "library",
   "sourceRoot": "packages/react-components/react-headless-components-preview/stories/src",
   "tags": ["vNext", "platform:web", "type:stories", "react-headless"],
-  "implicitDependencies": []
+  "implicitDependencies": [],
+  "targets": {
+    "storybook": {
+      "dependsOn": [
+        {
+          "projects": ["react-headless-components-preview", "react-storybook-addon-playground"],
+          "target": "build"
+        }
+      ]
+    },
+    "build-storybook": {
+      "dependsOn": [
+        {
+          "projects": ["react-headless-components-preview", "react-storybook-addon-playground"],
+          "target": "build"
+        }
+      ]
+    }
+  }
 }
@@ -26,8 +26,9 @@ export function prepareSandboxContainers(context: StoryContext) {
   }
 
   return Array.from(rootElements).map(rootElement => {
+    // Exclude buttons added by this addon and by @fluentui/react-storybook-addon-playground
     const showCodeButton = rootElement.querySelector(
-      '.docblock-code-toggle:not(.with-code-sandbox-button):not(.with-open-in-new-tab-button)',
+      '.docblock-code-toggle:not(.with-code-sandbox-button):not(.with-open-in-new-tab-button):not(.with-open-in-playground-button)',
     );
     const container = showCodeButton?.parentElement;
 

@@ -0,0 +1,3 @@
+{
+  "plugins": ["annotate-pure-calls", "@babel/transform-react-pure-annotations"]
+}
@@ -0,0 +1,35 @@
+{
+  "$schema": "https://json.schemastore.org/swcrc",
+  "exclude": [
+    "/testing",
+    "/**/*.cy.ts",
+    "/**/*.cy.tsx",
+    "/**/*.spec.ts",
+    "/**/*.spec.tsx",
+    "/**/*.test.ts",
+    "/**/*.test.tsx",
+    "/**/src/playground/**"
+  ],
+  "jsc": {
+    "baseUrl": ".",
+    "parser": {
+      "syntax": "typescript",
+      "tsx": true,
+      "decorators": false,
+      "dynamicImport": false
+    },
+    "externalHelpers": true,
+    "transform": {
+      "react": {
+        "runtime": "classic",
+        "useSpread": true
+      },
+      "optimizer": {
+        "simplify": true
+      }
+    },
+    "target": "es2019"
+  },
+  "minify": false,
+  "sourceMaps": true
+}
@@ -0,0 +1,15 @@
+@fluentui/react-storybook-addon-playground
+
+Copyright (c) Microsoft Corporation
+
+All rights reserved.
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ""Software""), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Note: Usage of the fonts and icons referenced in Fluent UI React is subject to the terms listed at https://aka.ms/fluentui-assets-license