Update versions for 16.8.6

MDN has a list of methods for obtaining the window reference of an
iframe:

https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage#Syntax

fix(react-dom): check if iframe belongs to the same origin

Accessing the contentDocument of a HTMLIframeElement can cause the browser
to throw, e.g. if it has a cross-origin src attribute.
Safari will show an error in the console when the access results in "Blocked a frame with origin". e.g:

```javascript
try {
 $0.contentDocument.defaultView
} catch (err) {
  console.log('err', err)
}

> Blocked a frame with origin X from accessing a frame with origin Y. Protocols, domains, and ports must match.
> err – TypeError: null is not an object (evaluating '$0.contentDocument.defaultView')
```

A safety way is to access one of the cross origin properties: Window or Location
Which might result in "SecurityError" DOM Exception and it is compatible to Safari.

```javascript
try {
 $0.contentWindow.location.href
} catch (err) {
 console.log('err', err)
}

> err – SecurityError: Blocked a frame with origin "http://localhost:3001" from accessing a cross-origin frame. Protocols, domains, and ports must match.
```

https://html.spec.whatwg.org/multipage/browsers.html#integration-with-idl

.babelrc

@@ -0,0 +1,23 @@
+{
+  "presets": ["react"],
+  "ignore": ["third_party"],
+  "plugins": [
+    "transform-class-properties",
+    "syntax-trailing-function-commas",
+    ["transform-object-rest-spread", { "useBuiltIns": true }],
+    "transform-es2015-template-literals",
+    "transform-es2015-literals",
+    "transform-es2015-arrow-functions",
+    "transform-es2015-block-scoped-functions",
+    ["transform-es2015-classes", { "loose": true }],
+    "transform-es2015-object-super",
+    "transform-es2015-shorthand-properties",
+    "transform-es2015-computed-properties",
+    "transform-es2015-for-of",
+    "check-es2015-constants",
+    ["transform-es2015-spread", { "loose": true }],
+    "transform-es2015-parameters",
+    ["transform-es2015-destructuring", { "loose": true }],
+    ["transform-es2015-block-scoping", { "throwIfClosureRequired": true }]
+  ]
+}

.circleci/config.yml

@@ -0,0 +1,48 @@
+version: 2
+jobs:
+  build:
+
+    docker:
+      - image: circleci/openjdk:8-jdk-node-browsers
+
+    environment:
+      TZ: /usr/share/zoneinfo/America/Los_Angeles
+      TRAVIS_REPO_SLUG: facebook/react
+
+    parallelism: 4
+
+    steps:
+      - checkout
+
+      - run: echo $CIRCLE_COMPARE_URL | cut -d/ -f7
+
+      - restore_cache:
+          name: Restore node_modules cache
+          keys:
+            - v1-node-{{ arch }}-{{ .Branch }}-{{ checksum "yarn.lock" }}
+            - v1-node-{{ arch }}-{{ .Branch }}-
+            - v1-node-{{ arch }}-
+
+      - run:
+          name: Nodejs Version
+          command: node --version
+
+      - run:
+          name: Install Packages
+          command: yarn install --frozen-lockfile
+
+      - run:
+          name: Test Packages
+          command: ./scripts/circleci/test_entry_point.sh
+
+      - save_cache:
+          name: Save node_modules cache
+          key: v1-node-{{ arch }}-{{ .Branch }}-{{ checksum "yarn.lock" }}
+          paths:
+            - node_modules
+
+      - store_artifacts:
+          path: ./node_modules.tgz
+
+      - store_artifacts:
+          path: ./scripts/error-codes/codes.json

.codesandbox/ci.json

@@ -1,13 +0,0 @@
-{
-  "packages": ["packages/react", "packages/react-dom", "packages/react-server-dom-webpack", "packages/scheduler"],
-  "buildCommand": "download-build-in-codesandbox-ci",
-  "node": "20",
-  "publishDirectory": {
-    "react": "build/oss-experimental/react",
-    "react-dom": "build/oss-experimental/react-dom",
-    "react-server-dom-webpack": "build/oss-experimental/react-server-dom-webpack",
-    "scheduler": "build/oss-experimental/scheduler"
-  },
-  "sandboxes": ["new"],
-  "silent": true
-}

.editorconfig

@@ -1,4 +1,4 @@
-# https://editorconfig.org
+# http://editorconfig.org
 root = true
 
 [*]
@@ -8,9 +8,11 @@ indent_size = 2
 indent_style = space
 insert_final_newline = true
 max_line_length = 80
+trim_trailing_whitespace = true
 
 [*.md]
 max_line_length = 0
+trim_trailing_whitespace = false
 
 [COMMIT_EDITMSG]
 max_line_length = 0

.eslintignore

@@ -12,22 +12,3 @@ scripts/bench/benchmarks/**/*.js
 
 # React repository clone
 scripts/bench/remote-repo/
-
-# Compiler uses its own lint setup
-compiler/
-
-packages/react-devtools-core/dist
-packages/react-devtools-extensions/chrome/build
-packages/react-devtools-extensions/firefox/build
-packages/react-devtools-extensions/shared/build
-packages/react-devtools-extensions/src/ErrorTesterCompiled.js
-packages/react-devtools-fusebox/dist
-packages/react-devtools-inline/dist
-packages/react-devtools-shared/src/hooks/__tests__/__source__/__compiled__/
-packages/react-devtools-shared/src/hooks/__tests__/__source__/__untransformed__/
-packages/react-devtools-shell/dist
-packages/react-devtools-timeline/dist
-packages/react-devtools-timeline/static
-
-# Imported third-party Flow types
-flow-typed/

.eslintrc.js

@@ -5,258 +5,58 @@ const {
   esNextPaths,
 } = require('./scripts/shared/pathsByLanguageVersion');
 
-const restrictedGlobals = require('confusing-browser-globals');
-
 const OFF = 0;
-const WARNING = 1;
 const ERROR = 2;
 
 module.exports = {
-  extends: ['prettier', 'plugin:jest/recommended'],
+  extends: 'fbjs',
 
   // Stop ESLint from looking for a configuration file in parent folders
-  root: true,
-
-  reportUnusedDisableDirectives: true,
+  'root': true,
 
   plugins: [
-    'babel',
-    'ft-flow',
     'jest',
-    'es',
     'no-for-of-loops',
-    'no-function-declare-after-return',
     'react',
     'react-internal',
   ],
 
-  parser: 'hermes-eslint',
+  parser: 'espree',
   parserOptions: {
-    ecmaVersion: 9,
+    ecmaVersion: 2017,
     sourceType: 'script',
+    ecmaFeatures: {
+      experimentalObjectRestSpread: true,
+    },
   },
 
   // We're stricter than the default config, mostly. We'll override a few rules
   // and then enable some React specific ones.
   rules: {
-    'ft-flow/array-style-complex-type': [OFF, 'verbose'],
-    'ft-flow/array-style-simple-type': [OFF, 'verbose'], // TODO should be WARNING
-    'ft-flow/boolean-style': ERROR,
-    'ft-flow/no-dupe-keys': ERROR,
-    'ft-flow/no-primitive-constructor-types': ERROR,
-    'ft-flow/no-types-missing-file-annotation': OFF, // TODO should be ERROR
-    'ft-flow/no-unused-expressions': ERROR,
-    // 'ft-flow/no-weak-types': WARNING,
-    // 'ft-flow/require-valid-file-annotation': ERROR,
-    'es/no-optional-chaining': ERROR,
-    'no-cond-assign': OFF,
-    'no-constant-condition': OFF,
-    'no-control-regex': OFF,
-    'no-debugger': ERROR,
-    'no-dupe-args': ERROR,
-    'no-dupe-keys': ERROR,
-    'no-duplicate-case': WARNING,
-    'no-empty-character-class': WARNING,
-    'no-empty': OFF,
-    'no-ex-assign': WARNING,
-    'no-extra-boolean-cast': WARNING,
-    'no-func-assign': ERROR,
-    'no-invalid-regexp': WARNING,
-    'no-irregular-whitespace': WARNING,
-    'no-negated-in-lhs': ERROR,
-    'no-obj-calls': ERROR,
-    'no-regex-spaces': WARNING,
-    'no-sparse-arrays': ERROR,
-    'no-unreachable': ERROR,
-    'use-isnan': ERROR,
-    'valid-jsdoc': OFF,
-    'block-scoped-var': OFF,
-    complexity: OFF,
-    'default-case': OFF,
-    'guard-for-in': OFF,
-    'no-alert': OFF,
-    'no-caller': ERROR,
-    'no-case-declarations': OFF,
-    'no-div-regex': OFF,
-    'no-else-return': OFF,
-    'no-empty-pattern': WARNING,
-    'no-eq-null': OFF,
-    'no-eval': ERROR,
-    'no-extend-native': WARNING,
-    'no-extra-bind': WARNING,
-    'no-fallthrough': WARNING,
-    'no-implicit-coercion': OFF,
-    'no-implied-eval': ERROR,
-    'no-invalid-this': OFF,
-    'no-iterator': OFF,
-    'no-labels': [ERROR, {allowLoop: true, allowSwitch: true}],
-    'no-lone-blocks': WARNING,
-    'no-loop-func': OFF,
-    'no-magic-numbers': OFF,
-    'no-multi-str': ERROR,
-    'no-native-reassign': [ERROR, {exceptions: ['Map', 'Set']}],
-    'no-new-func': ERROR,
-    'no-new': WARNING,
-    'no-new-wrappers': WARNING,
-    'no-octal-escape': WARNING,
-    'no-octal': WARNING,
-    'no-param-reassign': OFF,
-    'no-process-env': OFF,
-    'no-proto': ERROR,
-    'no-redeclare': OFF, // TODO should be WARNING?
-    'no-return-assign': OFF,
-    'no-script-url': ERROR,
-    'no-self-compare': WARNING,
-    'no-sequences': WARNING,
-    'no-throw-literal': ERROR,
-    'no-useless-call': WARNING,
-    'no-void': OFF,
-    'no-warning-comments': OFF,
-    'no-with': OFF,
-    radix: WARNING,
-    'vars-on-top': OFF,
-    yoda: OFF,
-    'init-declarations': OFF,
-    'no-catch-shadow': ERROR,
-    'no-delete-var': ERROR,
-    'no-label-var': WARNING,
-    'no-shadow-restricted-names': WARNING,
-    'no-undef-init': OFF,
-    'no-undef': ERROR,
-    'no-undefined': OFF,
-    'callback-return': OFF,
-    'global-require': OFF,
-    'handle-callback-err': OFF,
-    'no-mixed-requires': OFF,
-    'no-new-require': OFF,
-    'no-path-concat': OFF,
-    'no-process-exit': OFF,
-    'no-restricted-modules': OFF,
-    'no-sync': OFF,
-    camelcase: [OFF, {properties: 'always'}],
-    'consistent-this': [OFF, 'self'],
-    'func-names': OFF,
-    'func-style': [OFF, 'declaration'],
-    'id-length': OFF,
-    'id-match': OFF,
-    'max-depth': OFF,
-    'max-nested-callbacks': OFF,
-    'max-params': OFF,
-    'max-statements': OFF,
-    'new-cap': OFF,
-    'newline-after-var': OFF,
-    'no-array-constructor': ERROR,
-    'no-continue': OFF,
-    'no-inline-comments': OFF,
-    'no-lonely-if': OFF,
-    'no-negated-condition': OFF,
-    'no-nested-ternary': OFF,
-    'no-new-object': WARNING,
-    'no-plusplus': OFF,
-    'no-ternary': OFF,
-    'no-underscore-dangle': OFF,
-    'no-unneeded-ternary': WARNING,
-    'one-var': [WARNING, {initialized: 'never'}],
-    'operator-assignment': [WARNING, 'always'],
-    'require-jsdoc': OFF,
-    'sort-vars': OFF,
-    'spaced-comment': [
-      OFF,
-      'always',
-      {exceptions: ['jshint', 'jslint', 'eslint', 'global']},
-    ],
-    'constructor-super': ERROR,
-    'no-class-assign': WARNING,
-    'no-const-assign': ERROR,
-    'no-dupe-class-members': ERROR,
-    'no-this-before-super': ERROR,
-    'object-shorthand': OFF,
-    'prefer-const': OFF,
-    'prefer-spread': OFF,
-    'prefer-reflect': OFF,
-    'prefer-template': OFF,
-    'require-yield': OFF,
-    'babel/generator-star-spacing': OFF,
-    'babel/new-cap': OFF,
-    'babel/array-bracket-spacing': OFF,
-    'babel/object-curly-spacing': OFF,
-    'babel/object-shorthand': OFF,
-    'babel/arrow-parens': OFF,
-    'babel/no-await-in-loop': OFF,
-    'babel/flow-object-type': OFF,
-    'react/display-name': OFF,
-    'react/forbid-prop-types': OFF,
-    'react/jsx-closing-bracket-location': OFF,
-    'react/jsx-curly-spacing': OFF,
-    'react/jsx-equals-spacing': WARNING,
-    'react/jsx-filename-extension': OFF,
-    'react/jsx-first-prop-new-line': OFF,
-    'react/jsx-handler-names': OFF,
-    'react/jsx-indent': OFF,
-    'react/jsx-indent-props': OFF,
-    'react/jsx-key': OFF,
-    'react/jsx-max-props-per-line': OFF,
-    'react/jsx-no-bind': OFF,
-    'react/jsx-no-duplicate-props': ERROR,
-    'react/jsx-no-literals': OFF,
-    'react/jsx-no-target-blank': OFF,
-    'react/jsx-pascal-case': OFF,
-    'react/jsx-sort-props': OFF,
-    'react/jsx-uses-vars': ERROR,
-    'react/no-comment-textnodes': OFF,
-    'react/no-danger': OFF,
-    'react/no-deprecated': OFF,
-    'react/no-did-mount-set-state': OFF,
-    'react/no-did-update-set-state': OFF,
-    'react/no-direct-mutation-state': OFF,
-    'react/no-multi-comp': OFF,
-    'react/no-render-return-value': OFF,
-    'react/no-set-state': OFF,
-    'react/no-string-refs': OFF,
-    'react/no-unknown-property': OFF,
-    'react/prefer-es6-class': OFF,
-    'react/prefer-stateless-function': OFF,
-    'react/prop-types': OFF,
-    'react/require-extension': OFF,
-    'react/require-optimization': OFF,
-    'react/require-render-return': OFF,
-    'react/sort-comp': OFF,
-    'react/sort-prop-types': OFF,
-
     'accessor-pairs': OFF,
     'brace-style': [ERROR, '1tbs'],
+    'comma-dangle': [ERROR, 'always-multiline'],
     'consistent-return': OFF,
     'dot-location': [ERROR, 'property'],
-    // We use console['error']() as a signal to not transform it:
-    'dot-notation': [ERROR, {allowPattern: '^(error|warn)$'}],
+    'dot-notation': ERROR,
     'eol-last': ERROR,
-    eqeqeq: [ERROR, 'allow-null'],
-    indent: OFF,
+    'eqeqeq': [ERROR, 'allow-null'],
+    'indent': OFF,
     'jsx-quotes': [ERROR, 'prefer-double'],
     'keyword-spacing': [ERROR, {after: true, before: true}],
     'no-bitwise': OFF,
-    'no-console': OFF,
     'no-inner-declarations': [ERROR, 'functions'],
     'no-multi-spaces': ERROR,
-    'no-restricted-globals': [ERROR].concat(restrictedGlobals),
-    'no-restricted-syntax': [
-      ERROR,
-      'WithStatement',
-      {
-        selector: 'MemberExpression[property.name=/^(?:substring|substr)$/]',
-        message: 'Prefer string.slice() over .substring() and .substr().',
-      },
-    ],
+    'no-restricted-syntax': [ERROR, 'WithStatement'],
     'no-shadow': ERROR,
-    'no-unused-vars': [ERROR, {args: 'none', ignoreRestSiblings: true}],
-    'no-use-before-define': OFF,
+    'no-unused-expressions': ERROR,
+    'no-unused-vars': [ERROR, {args: 'none'}],
+    'no-use-before-define': [ERROR, {functions: false, variables: false}],
     'no-useless-concat': OFF,
-    quotes: [ERROR, 'single', {avoidEscape: true, allowTemplateLiterals: true}],
+    'quotes': [ERROR, 'single', {avoidEscape: true, allowTemplateLiterals: true }],
     'space-before-blocks': ERROR,
     'space-before-function-paren': OFF,
     'valid-typeof': [ERROR, {requireStringLiterals: true}],
-    // Flow fails with non-string literal keys
-    'no-useless-computed-key': OFF,
 
     // We apply these settings to files that should run on Node.
     // They can't use JSX or ES6 modules, and must be in strict mode.
@@ -265,12 +65,6 @@ module.exports = {
     'no-var': ERROR,
     strict: ERROR,
 
-    // Enforced by Prettier
-    // TODO: Prettier doesn't handle long strings or long comments. Not a big
-    // deal. But I turned it off because loading the plugin causes some obscure
-    // syntax error and it didn't seem worth investigating.
-    'max-len': OFF,
-
     // React & JSX
     // Our transforms set this automatically
     'react/jsx-boolean-value': [ERROR, 'always'],
@@ -284,69 +78,20 @@ module.exports = {
     'react/react-in-jsx-scope': ERROR,
     'react/self-closing-comp': ERROR,
     // We don't care to do this
-    'react/jsx-wrap-multilines': [
-      ERROR,
-      {declaration: false, assignment: false},
-    ],
+    'react/jsx-wrap-multilines': [ERROR, {declaration: false, assignment: false}],
 
     // Prevent for...of loops because they require a Symbol polyfill.
     // You can disable this rule for code that isn't shipped (e.g. build scripts and tests).
     'no-for-of-loops/no-for-of-loops': ERROR,
 
-    // Prevent function declarations after return statements
-    'no-function-declare-after-return/no-function-declare-after-return': ERROR,
-
     // CUSTOM RULES
     // the second argument of warning/invariant should be a literal string
     'react-internal/no-primitive-constructors': ERROR,
-    'react-internal/safe-string-coercion': [
-      ERROR,
-      {isProductionUserAppCode: true},
-    ],
-    'react-internal/warning-args': ERROR,
-    'react-internal/no-production-logging': ERROR,
+    'react-internal/no-to-warn-dev-within-to-throw': ERROR,
+    'react-internal/warning-and-invariant-args': ERROR,
   },
 
   overrides: [
-    {
-      // By default, anything error message that appears the packages directory
-      // must have a corresponding error code. The exceptions are defined
-      // in the next override entry.
-      files: ['packages/**/*.js'],
-      rules: {
-        'react-internal/prod-error-codes': ERROR,
-      },
-    },
-    {
-      // These are files where it's OK to have unminified error messages. These
-      // are environments where bundle size isn't a concern, like tests
-      // or Node.
-      files: [
-        'packages/react-dom/src/test-utils/**/*.js',
-        'packages/react-devtools-shared/**/*.js',
-        'packages/react-noop-renderer/**/*.js',
-        'packages/react-refresh/**/*.js',
-        'packages/react-server-dom-esm/**/*.js',
-        'packages/react-server-dom-webpack/**/*.js',
-        'packages/react-server-dom-turbopack/**/*.js',
-        'packages/react-server-dom-parcel/**/*.js',
-        'packages/react-server-dom-fb/**/*.js',
-        'packages/react-server-dom-unbundled/**/*.js',
-        'packages/react-test-renderer/**/*.js',
-        'packages/react-debug-tools/**/*.js',
-        'packages/react-devtools-extensions/**/*.js',
-        'packages/react-devtools-timeline/**/*.js',
-        'packages/react-native-renderer/**/*.js',
-        'packages/eslint-plugin-react-hooks/**/*.js',
-        'packages/jest-react/**/*.js',
-        'packages/internal-test-utils/**/*.js',
-        'packages/**/__tests__/*.js',
-        'packages/**/npm/*.js',
-      ],
-      rules: {
-        'react-internal/prod-error-codes': OFF,
-      },
-    },
     {
       // We apply these settings to files that we ship through npm.
       // They must be ES5.
@@ -365,14 +110,12 @@ module.exports = {
       // We apply these settings to the source files that get compiled.
       // They can use all features including JSX (but shouldn't use `var`).
       files: esNextPaths,
-      parser: 'hermes-eslint',
+      parser: 'babel-eslint',
       parserOptions: {
-        ecmaVersion: 8,
         sourceType: 'module',
       },
       rules: {
         'no-var': ERROR,
-        'prefer-const': ERROR,
         strict: OFF,
       },
     },
@@ -380,278 +123,16 @@ module.exports = {
       files: ['**/__tests__/*.js'],
       rules: {
         // https://github.com/jest-community/eslint-plugin-jest
-        // Meh, who cares.
-        'jest/consistent-test-it': OFF,
-        // Meh, we have a lot of these, who cares.
-        'jest/no-alias-methods': OFF,
-        // We do conditions based on feature flags.
-        'jest/no-conditional-expect': OFF,
-        // We have our own assertion helpers.
-        'jest/expect-expect': OFF,
-        // Lame rule that fires in itRender helpers or in render methods.
-        'jest/no-standalone-expect': OFF,
-      },
-    },
-    {
-      // Rules specific to test setup helper files.
-      files: [
-        '**/setupTests.js',
-        '**/setupEnv.js',
-        '**/jest/TestFlags.js',
-        '**/dom-event-testing-library/testHelpers.js',
-        '**/utils/ReactDOMServerIntegrationTestUtils.js',
-        '**/babel/transform-react-version-pragma.js',
-        '**/babel/transform-test-gate-pragma.js',
-      ],
-      rules: {
-        // Some helpers intentionally focus tests.
-        'jest/no-focused-tests': OFF,
-        // Test fn helpers don't use static text names.
-        'jest/valid-title': OFF,
-        // We have our own assertion helpers.
-        'jest/expect-expect': OFF,
-        // Some helpers intentionally disable tests.
-        'jest/no-disabled-tests': OFF,
-        // Helpers export text function helpers.
-        'jest/no-export': OFF,
-        // The examples in comments trigger false errors.
-        'jest/no-commented-out-tests': OFF,
-      },
-    },
-    {
-      files: ['**/jest/TestFlags.js'],
-      rules: {
-        // The examples in comments trigger false errors.
-        'jest/no-commented-out-tests': OFF,
-      },
-    },
-    {
-      files: [
-        '**/__tests__/**/*.js',
-        'scripts/**/*.js',
-        'packages/*/npm/**/*.js',
-        'packages/dom-event-testing-library/**/*.js',
-        'packages/react-devtools*/**/*.js',
-        'dangerfile.js',
-        'fixtures',
-        'packages/react-dom/src/test-utils/*.js',
-      ],
-      rules: {
-        'es/no-optional-chaining': OFF,
-        'react-internal/no-production-logging': OFF,
-        'react-internal/warning-args': OFF,
-        'react-internal/safe-string-coercion': [
-          ERROR,
-          {isProductionUserAppCode: false},
-        ],
-      },
-    },
-    {
-      files: ['scripts/eslint-rules/*.js'],
-      plugins: ['eslint-plugin'],
-      rules: {
-        'eslint-plugin/prefer-object-rule': ERROR,
-        'eslint-plugin/require-meta-fixable': [
-          ERROR,
-          {catchNoFixerButFixableProperty: true},
-        ],
-        'eslint-plugin/require-meta-has-suggestions': ERROR,
-      },
-    },
-    {
-      files: ['packages/react-native-renderer/**/*.js'],
-      globals: {
-        nativeFabricUIManager: 'readonly',
-        RN$enableMicrotasksInReact: 'readonly',
-      },
-    },
-    {
-      files: ['packages/react-server-dom-webpack/**/*.js'],
-      globals: {
-        __webpack_chunk_load__: 'readonly',
-        __webpack_get_script_filename__: 'readonly',
-        __webpack_require__: 'readonly',
-      },
-    },
-    {
-      files: ['packages/react-server-dom-turbopack/**/*.js'],
-      globals: {
-        __turbopack_load_by_url__: 'readonly',
-        __turbopack_require__: 'readonly',
-      },
-    },
-    {
-      files: ['packages/react-server-dom-parcel/**/*.js'],
-      globals: {
-        parcelRequire: 'readonly',
-      },
-    },
-    {
-      files: ['packages/scheduler/**/*.js'],
-      globals: {
-        TaskController: 'readonly',
-      },
-    },
-    {
-      files: [
-        'packages/react-devtools-extensions/**/*.js',
-        'packages/react-devtools-shared/src/devtools/views/**/*.js',
-        'packages/react-devtools-shared/src/hook.js',
-        'packages/react-devtools-shared/src/backend/console.js',
-        'packages/react-devtools-shared/src/backend/fiber/renderer.js',
-        'packages/react-devtools-shared/src/backend/shared/DevToolsComponentStackFrame.js',
-        'packages/react-devtools-shared/src/frontend/utils/withPermissionsCheck.js',
-      ],
-      globals: {
-        __IS_CHROME__: 'readonly',
-        __IS_FIREFOX__: 'readonly',
-        __IS_EDGE__: 'readonly',
-        __IS_NATIVE__: 'readonly',
-        __IS_INTERNAL_MCP_BUILD__: 'readonly',
-        __IS_INTERNAL_VERSION__: 'readonly',
-        chrome: 'readonly',
-      },
-    },
-    {
-      files: ['packages/react-devtools-shared/**/*.js'],
-      globals: {
-        __IS_INTERNAL_VERSION__: 'readonly',
-      },
-    },
-    {
-      files: ['packages/react-devtools-*/**/*.js'],
-      excludedFiles: '**/__tests__/**/*.js',
-      plugins: ['eslint-plugin-react-hooks-published'],
-      rules: {
-        'react-hooks-published/rules-of-hooks': ERROR,
-      },
-    },
-    {
-      files: ['packages/eslint-plugin-react-hooks/src/**/*'],
-      extends: ['plugin:@typescript-eslint/recommended'],
-      parser: '@typescript-eslint/parser',
-      plugins: ['@typescript-eslint', 'eslint-plugin'],
-      rules: {
-        '@typescript-eslint/no-explicit-any': OFF,
-        '@typescript-eslint/no-non-null-assertion': OFF,
-        '@typescript-eslint/array-type': [ERROR, {default: 'generic'}],
-
-        'es/no-optional-chaining': OFF,
-
-        'eslint-plugin/prefer-object-rule': ERROR,
-        'eslint-plugin/require-meta-fixable': [
-          ERROR,
-          {catchNoFixerButFixableProperty: true},
-        ],
-        'eslint-plugin/require-meta-has-suggestions': ERROR,
-      },
-    },
+        'jest/no-focused-tests': ERROR,
+      }
+    }
   ],
 
-  env: {
-    browser: true,
-    es6: true,
-    node: true,
-    jest: true,
-  },
-
   globals: {
-    $Flow$ModuleRef: 'readonly',
-    $FlowFixMe: 'readonly',
-    $Keys: 'readonly',
-    $NonMaybeType: 'readonly',
-    $ReadOnly: 'readonly',
-    $ReadOnlyArray: 'readonly',
-    $ArrayBufferView: 'readonly',
-    $Shape: 'readonly',
-    CallSite: 'readonly',
-    ConsoleTask: 'readonly', // TOOD: Figure out what the official name of this will be.
-    ReturnType: 'readonly',
-    AnimationFrameID: 'readonly',
-    WeakRef: 'readonly',
-    // For Flow type annotation. Only `BigInt` is valid at runtime.
-    bigint: 'readonly',
-    BigInt: 'readonly',
-    BigInt64Array: 'readonly',
-    BigUint64Array: 'readonly',
-    CacheType: 'readonly',
-    Class: 'readonly',
-    ClientRect: 'readonly',
-    CopyInspectedElementPath: 'readonly',
-    DOMHighResTimeStamp: 'readonly',
-    EventListener: 'readonly',
-    Iterable: 'readonly',
-    AsyncIterable: 'readonly',
-    $AsyncIterable: 'readonly',
-    $AsyncIterator: 'readonly',
-    Iterator: 'readonly',
-    AsyncIterator: 'readonly',
-    IntervalID: 'readonly',
-    IteratorResult: 'readonly',
-    JSONValue: 'readonly',
-    JSResourceReference: 'readonly',
-    mixin$Animatable: 'readonly',
-    MouseEventHandler: 'readonly',
-    NavigateEvent: 'readonly',
-    PerformanceMeasureOptions: 'readonly',
-    PropagationPhases: 'readonly',
-    PropertyDescriptor: 'readonly',
-    PropertyDescriptorMap: 'readonly',
-    Proxy$traps: 'readonly',
-    React$Component: 'readonly',
-    React$Config: 'readonly',
-    React$Context: 'readonly',
-    React$Element: 'readonly',
-    React$ElementConfig: 'readonly',
-    React$ElementProps: 'readonly',
-    React$ElementRef: 'readonly',
-    React$ElementType: 'readonly',
-    React$Key: 'readonly',
-    React$Node: 'readonly',
-    React$Portal: 'readonly',
-    React$Ref: 'readonly',
-    React$RefSetter: 'readonly',
-    ReadableStreamController: 'readonly',
-    ReadableStreamReader: 'readonly',
-    RequestInfo: 'readonly',
-    RequestOptions: 'readonly',
-    StoreAsGlobal: 'readonly',
-    symbol: 'readonly',
-    SyntheticEvent: 'readonly',
-    SyntheticMouseEvent: 'readonly',
-    SyntheticPointerEvent: 'readonly',
-    Thenable: 'readonly',
-    TimeoutID: 'readonly',
-    WheelEventHandler: 'readonly',
-    FinalizationRegistry: 'readonly',
-    Exclude: 'readonly',
-    Omit: 'readonly',
-    Keyframe: 'readonly',
-    PropertyIndexedKeyframes: 'readonly',
-    KeyframeAnimationOptions: 'readonly',
-    GetAnimationsOptions: 'readonly',
-    ScrollTimeline: 'readonly',
-    EventListenerOptionsOrUseCapture: 'readonly',
-    FocusOptions: 'readonly',
-    OptionalEffectTiming: 'readonly',
-
-    __REACT_ROOT_PATH_TEST__: 'readonly',
-    spyOnDev: 'readonly',
-    spyOnDevAndProd: 'readonly',
-    spyOnProd: 'readonly',
-    __DEV__: 'readonly',
-    __EXPERIMENTAL__: 'readonly',
-    __EXTENSION__: 'readonly',
-    __PROFILE__: 'readonly',
-    __TEST__: 'readonly',
-    __VARIANT__: 'readonly',
-    __unmockReact: 'readonly',
-    gate: 'readonly',
-    trustedTypes: 'readonly',
-    IS_REACT_ACT_ENVIRONMENT: 'readonly',
-    AsyncLocalStorage: 'readonly',
-    async_hooks: 'readonly',
-    globalThis: 'readonly',
-    navigation: 'readonly',
+    spyOnDev: true,
+    spyOnDevAndProd: true,
+    spyOnProd: true,
+    __PROFILE__: true,
+    __UMD__: true,
   },
 };

.git-blame-ignore-revs

@@ -1,2 +0,0 @@
-c998bb1ed4b3285398c9c7797135d3f060243c6a
-fd2b3e13d330a4559f5aa21462e1cb2cbbcf144b

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,14 @@
+<!--
+  Note: if the issue is about documentation or the website, please file it at:
+  https://github.com/reactjs/reactjs.org/issues/new
+-->
+
+**Do you want to request a *feature* or report a *bug*?**
+
+**What is the current behavior?**
+
+**If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem. Your bug will get fixed much faster if we can run your code and it doesn't have dependencies other than React. Paste the link to your JSFiddle (https://jsfiddle.net/Luktwrdm/) or CodeSandbox (https://codesandbox.io/s/new) example below:**
+
+**What is the expected behavior?**
+
+**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,41 +0,0 @@
----
-name: "🐛 Bug Report"
-about: Report a reproducible bug or regression.
-title: 'Bug: '
-labels: 'Status: Unconfirmed'
-
----
-
-<!--
-  Please provide a clear and concise description of what the bug is. Include
-  screenshots if needed. Please test using the latest version of the relevant
-  React packages to make sure your issue has not already been fixed.
--->
-
-React version:
-
-## Steps To Reproduce
-
-1.
-2.
-
-<!--
-  Your bug will get fixed much faster if we can run your code and it doesn't
-  have dependencies other than React. Issues without reproduction steps or
-  code examples may be immediately closed as not actionable.
--->
-
-Link to code example:
-
-<!--
-  Please provide a CodeSandbox (https://codesandbox.io/s/new), a link to a
-  repository on GitHub, or provide a minimal code example that reproduces the
-  problem. You may provide a screenshot of the application if you think it is
-  relevant to your bug report. Here are some tips for providing a minimal
-  example: https://stackoverflow.com/help/mcve.
--->
-
-## The current behavior
-
-
-## The expected behavior

.github/ISSUE_TEMPLATE/compiler_bug_report.yml

@@ -1,64 +0,0 @@
-name: "⚛️ ✨ Compiler bug report"
-description: "Report a problem with React Compiler. Please provide enough information that we can reproduce the problem."
-title: "[Compiler Bug]: "
-labels: ["Component: Optimizing Compiler", "Type: Bug", "Status: Unconfirmed"]
-body:
-- type: checkboxes
-  attributes:
-    label: What kind of issue is this?
-    description: |
-      Please indicate if this issue affects the following tools provided by React Compiler.
-    options:
-      - label: React Compiler core (the JS output is incorrect, or your app works incorrectly after optimization)
-      - label: babel-plugin-react-compiler (build issue installing or using the Babel plugin)
-      - label: eslint-plugin-react-hooks (build issue installing or using the eslint plugin)
-      - label: react-compiler-healthcheck (build issue installing or using the healthcheck script)
-- type: input
-  attributes:
-    label: Link to repro
-    description: |
-      Please provide a repro by either sharing a [Playground link](https://playground.react.dev), or a public GitHub repo so the React team can reproduce the error being reported. Please do not share localhost links!
-    placeholder: |
-      e.g. public GitHub repo, or Playground link
-  validations:
-    required: true
-- type: textarea
-  attributes:
-    label: Repro steps
-    description: |
-      What were you doing when the bug happened? Detailed information helps maintainers reproduce and fix bugs.
-
-      Issues filed without repro steps will be closed.
-    placeholder: |
-      Example bug report:
-      1. Log in with username/password
-      2. Click "Messages" on the left menu
-      3. Open any message in the list
-  validations:
-    required: true
-- type: dropdown
-  attributes:
-    label: How often does this bug happen?
-    description: |
-      Following the repro steps above, how easily are you able to reproduce this bug?
-    options:
-      - Every time
-      - Often
-      - Sometimes
-      - Only once
-  validations:
-    required: true
-- type: input
-  attributes:
-    label: What version of React are you using?
-    description: |
-      Please provide your React version in the app where this issue occurred.
-  validations:
-    required: true
-- type: input
-  attributes:
-    label: What version of React Compiler are you using?
-    description: |
-      Please provide the exact React Compiler version in the app where this issue occurred.
-  validations:
-    required: true

.github/ISSUE_TEMPLATE/config.yml

@@ -1,8 +0,0 @@
-blank_issues_enabled: false
-contact_links:
-    - name: 📃 Documentation Issue
-      url: https://github.com/reactjs/react.dev/issues/new/choose
-      about: This issue tracker is not for documentation issues. Please file documentation issues here.
-    - name: 🤔 Questions and Help
-      url: https://reactjs.org/community/support.html
-      about: This issue tracker is not for support questions. Please refer to the React community's help and discussion forums.

.github/ISSUE_TEMPLATE/devtools_bug_report.yml

@@ -1,81 +0,0 @@
-name: "⚛️ 🛠 DevTools bug report"
-description: "Report a problem with React DevTools. Please provide enough information that we can reproduce the problem."
-title: "[DevTools Bug]: "
-labels: ["Component: Developer Tools", "Type: Bug", "Status: Unconfirmed"]
-body:
-- type: input
-  attributes:
-    label: Website or app
-    description: |
-      Which website or app were you using when the bug happened?
-
-      This should be a public URL, GitHub repo, or Code Sandbox app so the React team can reproduce the error being reported. (Please no localhost URLs.)
-    placeholder: |
-      e.g. website URL, public GitHub repo, or Code Sandbox app
-  validations:
-    required: true
-- type: textarea
-  attributes:
-    label: Repro steps
-    description: |
-      What were you doing on the website or app when the bug happened? Detailed information helps maintainers reproduce and fix bugs.
-
-      Issues filed without repro steps will be closed.
-    placeholder: |
-      Example bug report:
-      1. Log in with username/password
-      2. Click "Messages" on the left menu
-      3. Open any message in the list
-  validations:
-    required: true
-- type: dropdown
-  attributes:
-    label: How often does this bug happen?
-    description: |
-      Following the repro steps above, how easily are you able to reproduce this bug?
-    options:
-      - Every time
-      - Often
-      - Sometimes
-      - Only once
-  validations:
-    required: true
-- type: input
-  id: automated_package
-  attributes:
-    label: DevTools package (automated)
-    description: |
-      Please do not edit this field.
-- type: input
-  id: automated_version
-  attributes:
-    label: DevTools version (automated)
-    description: |
-      Please do not edit this field.
-- type: input
-  id: automated_error_message
-  attributes:
-    label: Error message (automated)
-    description: |
-      Please do not edit this field.
-- type: textarea
-  id: automated_call_stack
-  attributes:
-    label: Error call stack (automated)
-    description: |
-      Please do not edit this field.
-    render: text
-- type: textarea
-  id: automated_component_stack
-  attributes:
-    label: Error component stack (automated)
-    description: |
-      Please do not edit this field.
-    render: text
-- type: textarea
-  id: automated_github_query_string
-  attributes:
-    label: GitHub query string (automated)
-    description: |
-      Please do not edit this field.
-    render: text

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,33 +1,14 @@
-<!--
-  Thanks for submitting a pull request!
-  We appreciate you spending the time to work on these changes. Please provide enough information so that others can review your pull request. The three fields below are mandatory.
+**Before submitting a pull request,** please make sure the following is done:
 
-  Before submitting a pull request, please make sure the following is done:
+1. Fork [the repository](https://github.com/facebook/react) and create your branch from `master`.
+2. Run `yarn` in the repository root.
+3. If you've fixed a bug or added code that should be tested, add tests!
+4. Ensure the test suite passes (`yarn test`). Tip: `yarn test --watch TestName` is helpful in development.
+5. Run `yarn test-prod` to test in the production environment. It supports the same options as `yarn test`.
+6. If you need a debugger, run `yarn debug-test --watch TestName`, open `chrome://inspect`, and press "Inspect".
+7. Format your code with [prettier](https://github.com/prettier/prettier) (`yarn prettier`).
+8. Make sure your code lints (`yarn lint`). Tip: `yarn linc` to only check changed files.
+9. Run the [Flow](https://flowtype.org/) typechecks (`yarn flow`).
+10. If you haven't already, complete the CLA.
 
-  1. Fork [the repository](https://github.com/facebook/react) and create your branch from `main`.
-  2. Run `yarn` in the repository root.
-  3. If you've fixed a bug or added code that should be tested, add tests!
-  4. Ensure the test suite passes (`yarn test`). Tip: `yarn test --watch TestName` is helpful in development.
-  5. Run `yarn test --prod` to test in the production environment. It supports the same options as `yarn test`.
-  6. If you need a debugger, run `yarn test --debug --watch TestName`, open `chrome://inspect`, and press "Inspect".
-  7. Format your code with [prettier](https://github.com/prettier/prettier) (`yarn prettier`).
-  8. Make sure your code lints (`yarn lint`). Tip: `yarn linc` to only check changed files.
-  9. Run the [Flow](https://flowtype.org/) type checks (`yarn flow`).
-  10. If you haven't already, complete the CLA.
-
-  Learn more about contributing: https://reactjs.org/docs/how-to-contribute.html
--->
-
-## Summary
-
-<!--
- Explain the **motivation** for making this change. What existing problem does the pull request solve?
--->
-
-## How did you test this change?
-
-<!--
-  Demonstrate the code is solid. Example: The exact commands you ran and their output, screenshots / videos if the pull request changes the user interface.
-  How exactly did you verify that your PR solves the issue you wanted to solve?
-  If you leave this empty, your PR will very likely be closed.
--->
+**Learn more about contributing:** https://reactjs.org/docs/how-to-contribute.html

.github/dependabot.yml

@@ -1,10 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: "npm"
-    directories:
-      - "/fixtures/*"
-    schedule:
-      interval: "monthly"
-    open-pull-requests-limit: 0
-    ignore:
-      - dependency-name: "*"

.github/workflows/compiler_discord_notify.yml

@@ -1,49 +0,0 @@
-name: (Compiler) Discord Notify
-
-on:
-  pull_request_target:
-    types: [opened, ready_for_review]
-    paths:
-      - compiler/**
-      - .github/workflows/compiler_**.yml
-
-permissions: {}
-
-jobs:
-  check_access:
-    if: ${{ github.event.pull_request.draft == false }}
-    runs-on: ubuntu-latest
-    outputs:
-      is_member_or_collaborator: ${{ steps.check_is_member_or_collaborator.outputs.is_member_or_collaborator }}
-    steps:
-      - run: echo ${{ github.event.pull_request.author_association }}
-      - name: Check is member or collaborator
-        id: check_is_member_or_collaborator
-        if: ${{ github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'COLLABORATOR' }}
-        run: echo "is_member_or_collaborator=true" >> "$GITHUB_OUTPUT"
-
-  check_maintainer:
-    if: ${{ needs.check_access.outputs.is_member_or_collaborator == 'true' || needs.check_access.outputs.is_member_or_collaborator == true }}
-    needs: [check_access]
-    uses: facebook/react/.github/workflows/shared_check_maintainer.yml@main
-    permissions:
-      # Used by check_maintainer
-      contents: read
-    with:
-      actor: ${{ github.event.pull_request.user.login }}
-
-  notify:
-    if: ${{ needs.check_maintainer.outputs.is_core_team == 'true' }}
-    needs: check_maintainer
-    runs-on: ubuntu-latest
-    steps:
-      - name: Discord Webhook Action
-        uses: tsickert/discord-webhook@86dc739f3f165f16dadc5666051c367efa1692f4
-        with:
-          webhook-url: ${{ secrets.COMPILER_DISCORD_WEBHOOK_URL }}
-          embed-author-name: ${{ github.event.pull_request.user.login }}
-          embed-author-url: ${{ github.event.pull_request.user.html_url }}
-          embed-author-icon-url: ${{ github.event.pull_request.user.avatar_url }}
-          embed-title: '#${{ github.event.number }} (+${{github.event.pull_request.additions}} -${{github.event.pull_request.deletions}}): ${{ github.event.pull_request.title }}'
-          embed-description: ${{ github.event.pull_request.body }}
-          embed-url: ${{ github.event.pull_request.html_url }}

.github/workflows/compiler_playground.yml

@@ -1,69 +0,0 @@
-name: (Compiler) Playground
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    paths:
-      - compiler/**
-      - .github/workflows/compiler_playground.yml
-
-permissions: {}
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.run_id }}
-  cancel-in-progress: true
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-
-defaults:
-  run:
-    working-directory: compiler/apps/playground
-
-jobs:
-  playground:
-    name: Test playground
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: compiler/**/yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: compiler-and-playground-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('compiler/**/yarn.lock') }}
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-        working-directory: compiler
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Check Playwright version
-        id: playwright_version
-        run: echo "playwright_version=$(npm ls @playwright/test | grep @playwright | sed 's/.*@//' | head -1)" >> "$GITHUB_OUTPUT"
-      - name: Cache Playwright Browsers for version ${{ steps.playwright_version.outputs.playwright_version }}
-        id: cache_playwright_browsers
-        uses: actions/cache@v4
-        with:
-          path: ~/.cache/ms-playwright
-          key: playwright-browsers-v6-${{ runner.arch }}-${{ runner.os }}-${{ steps.playwright_version.outputs.playwright_version }}
-      - run: npx playwright install --with-deps chromium
-        if: steps.cache_playwright_browsers.outputs.cache-hit != 'true'
-      - run: CI=true yarn test
-      - run: ls -R test-results
-        if: '!cancelled()'
-      - name: Archive test results
-        if: '!cancelled()'
-        uses: actions/upload-artifact@v4
-        with:
-          name: test-results
-          path: compiler/apps/playground/test-results
-          if-no-files-found: ignore

.github/workflows/compiler_prereleases.yml

@@ -1,70 +0,0 @@
-name: (Compiler) Publish Prereleases
-
-on:
-  workflow_call:
-    inputs:
-      commit_sha:
-        required: true
-        default: ''
-        type: string
-      release_channel:
-        required: true
-        type: string
-      dist_tag:
-        required: true
-        type: string
-      version_name:
-        required: true
-        type: string
-      tag_version:
-        required: false
-        type: string
-      dry_run:
-        required: false
-        type: boolean
-    secrets:
-      NPM_TOKEN:
-        required: true
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-  NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-
-defaults:
-  run:
-    working-directory: compiler
-
-jobs:
-  publish_prerelease:
-    name: Publish prelease (${{ inputs.release_channel }}) ${{ inputs.commit_sha }} @${{ inputs.dist_tag }}
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: compiler/yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: compiler-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('compiler/yarn.lock') }}
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - if: inputs.dry_run == true
-        name: Publish packages to npm (dry run)
-        run: |
-          cp ./scripts/release/ci-npmrc ~/.npmrc
-          scripts/release/publish.js --frfr --debug --ci --versionName=${{ inputs.version_name }} --tag=${{ inputs.dist_tag }} ${{ inputs.tag_version && format('--tagVersion={0}', inputs.tag_version) || '' }}
-      - if: inputs.dry_run != true
-        name: Publish packages to npm
-        run: |
-          cp ./scripts/release/ci-npmrc ~/.npmrc
-          scripts/release/publish.js --frfr --ci --versionName=${{ inputs.version_name }} --tag=${{ inputs.dist_tag }} ${{ inputs.tag_version && format('--tagVersion={0}', inputs.tag_version) || '' }}

.github/workflows/compiler_prereleases_manual.yml

@@ -1,41 +0,0 @@
-name: (Compiler) Publish Prereleases Manual
-
-on:
-  workflow_dispatch:
-    inputs:
-      prerelease_commit_sha:
-        required: false
-      release_channel:
-        required: true
-        type: string
-      dist_tag:
-        required: true
-        type: string
-      version_name:
-        required: true
-        type: string
-      tag_version:
-        required: false
-        type: string
-      dry_run:
-        required: false
-        type: boolean
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-
-jobs:
-  publish_prerelease_experimental:
-    name: Publish to Experimental channel
-    uses: facebook/react/.github/workflows/compiler_prereleases.yml@main
-    with:
-      commit_sha: ${{ inputs.prerelease_commit_sha || github.sha }}
-      release_channel: ${{ inputs.release_channel }}
-      dist_tag: ${{ inputs.dist_tag }}
-      version_name: ${{ inputs.version_name }}
-      tag_version: ${{ inputs.tag_version }}
-      dry_run: ${{ inputs.dry_run }}
-    secrets:
-      NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/compiler_prereleases_nightly.yml

@@ -1,24 +0,0 @@
-name: (Compiler) Publish Prereleases Nightly
-
-on:
-  schedule:
-    # At 10 minutes past 16:00 on Mon, Tue, Wed, Thu, and Fri
-    - cron: 10 16 * * 1,2,3,4,5
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-
-jobs:
-  publish_prerelease_experimental:
-    name: Publish to Experimental channel
-    uses: facebook/react/.github/workflows/compiler_prereleases.yml@main
-    with:
-      commit_sha: ${{ github.sha }}
-      release_channel: experimental
-      dist_tag: experimental
-      version_name: '0.0.0'
-      dry_run: false
-    secrets:
-      NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

.github/workflows/compiler_typescript.yml

@@ -1,108 +0,0 @@
-name: (Compiler) TypeScript
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    paths:
-      - compiler/**
-      - .github/workflows/compiler_typescript.yml
-
-permissions: {}
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.run_id }}
-  cancel-in-progress: true
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-
-defaults:
-  run:
-    working-directory: compiler
-
-jobs:
-  discover_yarn_workspaces:
-    name: Discover yarn workspaces
-    runs-on: ubuntu-latest
-    outputs:
-      matrix: ${{ steps.set-matrix.outputs.matrix }}
-    steps:
-      - uses: actions/checkout@v4
-      - id: set-matrix
-        run: echo "matrix=$(find packages -mindepth 1 -maxdepth 1 -type d | sed 's!packages/!!g' | tr '\n' ',' | sed s/.$// | jq -Rsc '. / "," - [""]')" >> $GITHUB_OUTPUT
-
-  # Hardcoded to improve parallelism
-  lint:
-    name: Lint babel-plugin-react-compiler
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: compiler/yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: compiler-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('compiler/yarn.lock') }}
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn workspace babel-plugin-react-compiler lint
-
-  # Hardcoded to improve parallelism
-  jest:
-    name: Jest babel-plugin-react-compiler
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: compiler/yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: compiler-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('compiler/yarn.lock') }}
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn workspace babel-plugin-react-compiler jest
-
-  test:
-    name: Test ${{ matrix.workspace_name }}
-    needs: discover_yarn_workspaces
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        workspace_name: ${{ fromJSON(needs.discover_yarn_workspaces.outputs.matrix) }}
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: compiler/yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: compiler-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('compiler/yarn.lock') }}
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: xvfb-run -a yarn workspace ${{ matrix.workspace_name }} test
-        if: runner.os == 'Linux' && matrix.workspace_name == 'react-forgive'
-      - run: yarn workspace ${{ matrix.workspace_name }} test
-        if: matrix.workspace_name != 'react-forgive'

.github/workflows/devtools_discord_notify.yml

@@ -1,49 +0,0 @@
-name: (DevTools) Discord Notify
-
-on:
-  pull_request_target:
-    types: [opened, ready_for_review]
-    paths:
-      - packages/react-devtools**
-      - .github/workflows/devtools_**.yml
-
-permissions: {}
-
-jobs:
-  check_access:
-    if: ${{ github.event.pull_request.draft == false }}
-    runs-on: ubuntu-latest
-    outputs:
-      is_member_or_collaborator: ${{ steps.check_is_member_or_collaborator.outputs.is_member_or_collaborator }}
-    steps:
-      - run: echo ${{ github.event.pull_request.author_association }}
-      - name: Check is member or collaborator
-        id: check_is_member_or_collaborator
-        if: ${{ github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'COLLABORATOR' }}
-        run: echo "is_member_or_collaborator=true" >> "$GITHUB_OUTPUT"
-
-  check_maintainer:
-    if: ${{ needs.check_access.outputs.is_member_or_collaborator == 'true' || needs.check_access.outputs.is_member_or_collaborator == true }}
-    needs: [check_access]
-    uses: facebook/react/.github/workflows/shared_check_maintainer.yml@main
-    permissions:
-      # Used by check_maintainer
-      contents: read
-    with:
-      actor: ${{ github.event.pull_request.user.login }}
-
-  notify:
-    if: ${{ needs.check_maintainer.outputs.is_core_team == 'true' }}
-    needs: check_maintainer
-    runs-on: ubuntu-latest
-    steps:
-      - name: Discord Webhook Action
-        uses: tsickert/discord-webhook@86dc739f3f165f16dadc5666051c367efa1692f4
-        with:
-          webhook-url: ${{ secrets.DEVTOOLS_DISCORD_WEBHOOK_URL }}
-          embed-author-name: ${{ github.event.pull_request.user.login }}
-          embed-author-url: ${{ github.event.pull_request.user.html_url }}
-          embed-author-icon-url: ${{ github.event.pull_request.user.avatar_url }}
-          embed-title: '#${{ github.event.number }} (+${{github.event.pull_request.additions}} -${{github.event.pull_request.deletions}}): ${{ github.event.pull_request.title }}'
-          embed-description: ${{ github.event.pull_request.body }}
-          embed-url: ${{ github.event.pull_request.html_url }}

.github/workflows/devtools_regression_tests.yml

@@ -1,205 +0,0 @@
-name: (DevTools) Regression Tests
-
-on:
-  schedule:
-    - cron: 0 0 * * *
-  workflow_dispatch:
-    inputs:
-      commit_sha:
-        required: false
-        type: string
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-
-jobs:
-  download_build:
-    name: Download base build
-    runs-on: ubuntu-latest
-    permissions:
-      # We use github.token to download the build artifact from a previous runtime_build_and_test.yml run
-      actions: read
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-release-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'scripts/release/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd scripts/release install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Download react-devtools artifacts for base revision
-        run: |
-          git fetch origin main
-          GH_TOKEN=${{ github.token }} scripts/release/download-experimental-build.js --commit=${{ inputs.commit_sha || '$(git rev-parse origin/main)' }}
-      - name: Display structure of build
-        run: ls -R build
-      - name: Archive build
-        uses: actions/upload-artifact@v4
-        with:
-          name: build
-          path: build
-          if-no-files-found: error
-
-  build_devtools_and_process_artifacts:
-    name: Build DevTools and process artifacts
-    needs: download_build
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          name: build
-          path: build
-      - run: ./scripts/ci/pack_and_store_devtools_artifacts.sh
-        env:
-          RELEASE_CHANNEL: experimental
-      - name: Display structure of build
-        run: ls -R build
-      - name: Archive devtools build
-        uses: actions/upload-artifact@v4
-        with:
-          name: react-devtools
-          path: build/devtools
-          if-no-files-found: error
-      # Simplifies getting the extension for local testing
-      - name: Archive chrome extension
-        uses: actions/upload-artifact@v4
-        with:
-          name: react-devtools-chrome-extension
-          path: build/devtools/chrome-extension.zip
-          if-no-files-found: error
-      - name: Archive firefox extension
-        uses: actions/upload-artifact@v4
-        with:
-          name: react-devtools-firefox-extension
-          path: build/devtools/firefox-extension.zip
-          if-no-files-found: error
-
-  run_devtools_tests_for_versions:
-    name: Run DevTools tests for versions
-    needs: build_devtools_and_process_artifacts
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "16.0"
-          - "16.5" # schedule package
-          - "16.8" # hooks
-          - "17.0"
-          - "18.0"
-          - "18.2" # compiler polyfill
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore all archived build artifacts
-        uses: actions/download-artifact@v4
-      - name: Display structure of build
-        run: ls -R build
-      - run: ./scripts/ci/download_devtools_regression_build.js ${{ matrix.version }} --replaceBuild
-      - run: node ./scripts/jest/jest-cli.js --build --project devtools --release-channel=experimental --reactVersion ${{ matrix.version }} --ci
-
-  run_devtools_e2e_tests_for_versions:
-    name: Run DevTools e2e tests for versions
-    needs: build_devtools_and_process_artifacts
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "16.0"
-          - "16.5" # schedule package
-          - "16.8" # hooks
-          - "17.0"
-          - "18.0"
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore all archived build artifacts
-        uses: actions/download-artifact@v4
-      - name: Display structure of build
-        run: ls -R build
-      - name: Check Playwright version
-        id: playwright_version
-        run: echo "playwright_version=$(npm ls @playwright/test | grep @playwright | sed 's/.*@//' | head -1)" >> "$GITHUB_OUTPUT"
-      - name: Cache Playwright Browsers for version ${{ steps.playwright_version.outputs.playwright_version }}
-        id: cache_playwright_browsers
-        uses: actions/cache@v4
-        with:
-          path: ~/.cache/ms-playwright
-          key: playwright-browsers-v6-${{ runner.arch }}-${{ runner.os }}-${{ steps.playwright_version.outputs.playwright_version }}
-      - run: npx playwright install --with-deps
-        if: steps.cache_playwright_browsers.outputs.cache-hit != 'true'
-      - run: npx playwright install-deps
-        if: steps.cache_playwright_browsers.outputs.cache-hit == 'true'
-      - run: ./scripts/ci/download_devtools_regression_build.js ${{ matrix.version }}
-      - run: ls -R build-regression
-      - run: ./scripts/ci/run_devtools_e2e_tests.js ${{ matrix.version }}
-        env:
-          RELEASE_CHANNEL: experimental
-      - name: Cleanup build regression folder
-        run: rm -r ./build-regression
-      - uses: actions/upload-artifact@v4
-        with:
-          name: screenshots
-          path: ./tmp/playwright-artifacts
-          if-no-files-found: warn

.github/workflows/runtime_build_and_test.yml

@@ -1,933 +0,0 @@
-name: (Runtime) Build and Test
-
-on:
-  push:
-    branches: [main]
-    tags:
-      # To get CI for backport releases.
-      # This will duplicate CI for releases from main which is acceptable
-      - "v*"
-  pull_request:
-    paths-ignore:
-      - compiler/**
-  workflow_dispatch:
-    inputs:
-      commit_sha:
-        required: false
-        type: string
-        default: ''
-
-permissions: {}
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.run_id }}
-  cancel-in-progress: true
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-
-jobs:
-  # ----- NODE_MODULES CACHE -----
-  # Centralize the node_modules cache so it is saved once and each subsequent job only needs to
-  # restore the cache. Prevents race conditions where multiple workflows try to write to the cache.
-  runtime_node_modules_cache:
-    name: Cache Runtime node_modules
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - name: Check cache hit
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          lookup-only: true
-      - uses: actions/setup-node@v4
-        if: steps.node_modules.outputs.cache-hit != 'true'
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Warm with old cache
-        if: steps.node_modules.outputs.cache-hit != 'true'
-        uses: actions/cache/restore@v4
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Save cache
-        if: steps.node_modules.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v4
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-
-  runtime_compiler_node_modules_cache:
-    name: Cache Runtime, Compiler node_modules
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - name: Check cache hit
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-and-compiler-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'compiler/yarn.lock') }}
-          lookup-only: true
-      - uses: actions/setup-node@v4
-        if: steps.node_modules.outputs.cache-hit != 'true'
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: |
-            yarn.lock
-            compiler/yarn.lock
-      - name: Warm with old cache
-        if: steps.node_modules.outputs.cache-hit != 'true'
-        uses: actions/cache/restore@v4
-        with:
-          path: |
-            **/node_modules
-          key: runtime-and-compiler-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'compiler/yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd compiler install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Save cache
-        if: steps.node_modules.outputs.cache-hit != 'true'
-        uses: actions/cache/save@v4
-        with:
-          path: |
-            **/node_modules
-          key: runtime-and-compiler-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'compiler/yarn.lock') }}
-
-  # ----- FLOW -----
-  discover_flow_inline_configs:
-    name: Discover flow inline configs
-    runs-on: ubuntu-latest
-    outputs:
-      matrix: ${{ steps.set-matrix.outputs.result }}
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/github-script@v7
-        id: set-matrix
-        with:
-          script: |
-            const inlinedHostConfigs = require('./scripts/shared/inlinedHostConfigs.js');
-            return inlinedHostConfigs.map(config => config.shortName);
-
-  flow:
-    name: Flow check ${{ matrix.flow_inline_config_shortname }}
-    needs: [discover_flow_inline_configs, runtime_node_modules_cache]
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        flow_inline_config_shortname: ${{ fromJSON(needs.discover_flow_inline_configs.outputs.matrix) }}
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: node ./scripts/tasks/flow-ci ${{ matrix.flow_inline_config_shortname }}
-
-  # ----- FIZZ -----
-  check_generated_fizz_runtime:
-    name: Confirm generated inline Fizz runtime is up to date
-    needs: [runtime_node_modules_cache]
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: |
-          yarn generate-inline-fizz-runtime
-          git diff --exit-code || (echo "There was a change to the Fizz runtime. Run \`yarn generate-inline-fizz-runtime\` and check in the result." && false)
-
-  # ----- FEATURE FLAGS -----
-  flags:
-    name: Check flags
-    needs: [runtime_node_modules_cache]
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn flags
-
-  # ----- TESTS -----
-  test:
-    name: yarn test ${{ matrix.params }} (Shard ${{ matrix.shard }})
-    needs: [runtime_compiler_node_modules_cache]
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        params:
-          - "-r=stable --env=development"
-          - "-r=stable --env=production"
-          - "-r=experimental --env=development"
-          - "-r=experimental --env=production"
-          - "-r=www-classic --env=development --variant=false"
-          - "-r=www-classic --env=production --variant=false"
-          - "-r=www-classic --env=development --variant=true"
-          - "-r=www-classic --env=production --variant=true"
-          - "-r=www-modern --env=development --variant=false"
-          - "-r=www-modern --env=production --variant=false"
-          - "-r=www-modern --env=development --variant=true"
-          - "-r=www-modern --env=production --variant=true"
-          - "-r=xplat --env=development --variant=false"
-          - "-r=xplat --env=development --variant=true"
-          - "-r=xplat --env=production --variant=false"
-          - "-r=xplat --env=production --variant=true"
-          # TODO: Test more persistent configurations?
-          - "-r=stable --env=development --persistent"
-          - "-r=experimental --env=development --persistent"
-        shard:
-          - 1/5
-          - 2/5
-          - 3/5
-          - 4/5
-          - 5/5
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: |
-            yarn.lock
-            compiler/yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-and-compiler-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'compiler/yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd compiler install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: node --version
-      - run: yarn test ${{ matrix.params }} --ci --shard=${{ matrix.shard }}
-
-  # Hardcoded to improve parallelism
-  test-linter:
-    name: Test eslint-plugin-react-hooks
-    needs: [runtime_compiler_node_modules_cache]
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path:  |
-            yarn.lock
-            compiler/yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-and-compiler-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'compiler/yarn.lock') }}
-      - name: Install runtime dependencies
-        run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Install compiler dependencies
-        run: yarn install --frozen-lockfile
-        working-directory: compiler
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: ./scripts/react-compiler/build-compiler.sh && ./scripts/react-compiler/link-compiler.sh
-      - run: yarn workspace eslint-plugin-react-hooks test
-
-  # ----- BUILD -----
-  build_and_lint:
-    name: yarn build and lint
-    needs: [runtime_compiler_node_modules_cache]
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        # yml is dumb. update the --total arg to yarn build if you change the number of workers
-        worker_id: [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24]
-        release_channel: [stable, experimental]
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: |
-            yarn.lock
-            compiler/yarn.lock
-      - uses: actions/setup-java@v4
-        with:
-          distribution: temurin
-          java-version: 11.0.22
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-and-compiler-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'compiler/yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd compiler install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn build --index=${{ matrix.worker_id }} --total=25 --r=${{ matrix.release_channel }} --ci
-        env:
-          CI: github
-          RELEASE_CHANNEL: ${{ matrix.release_channel }}
-          NODE_INDEX: ${{ matrix.worker_id }}
-      - name: Lint build
-        run: yarn lint-build
-      - name: Display structure of build
-        run: ls -R build
-      - name: Archive build
-        uses: actions/upload-artifact@v4
-        with:
-          name: _build_${{ matrix.worker_id }}_${{ matrix.release_channel }}
-          path: build
-          if-no-files-found: error
-
-  test_build:
-    name: yarn test-build
-    needs: [build_and_lint, runtime_compiler_node_modules_cache]
-    strategy:
-      fail-fast: false
-      matrix:
-        test_params: [
-          # Intentionally passing these as strings instead of creating a
-          # separate parameter per CLI argument, since it's easier to
-          # control/see which combinations we want to run.
-          -r=stable --env=development,
-          -r=stable --env=production,
-          -r=experimental --env=development,
-          -r=experimental --env=production,
-
-          # TODO: Update test config to support www build tests
-          # - "-r=www-classic --env=development --variant=false"
-          # - "-r=www-classic --env=production --variant=false"
-          # - "-r=www-classic --env=development --variant=true"
-          # - "-r=www-classic --env=production --variant=true"
-          # - "-r=www-modern --env=development --variant=false"
-          # - "-r=www-modern --env=production --variant=false"
-          # - "-r=www-modern --env=development --variant=true"
-          # - "-r=www-modern --env=production --variant=true"
-
-          # TODO: Update test config to support xplat build tests
-          # - "-r=xplat --env=development --variant=false"
-          # - "-r=xplat --env=development --variant=true"
-          # - "-r=xplat --env=production --variant=false"
-          # - "-r=xplat --env=production --variant=true"
-
-          # TODO: Test more persistent configurations?
-        ]
-        shard:
-          - 1/10
-          - 2/10
-          - 3/10
-          - 4/10
-          - 5/10
-          - 6/10
-          - 7/10
-          - 8/10
-          - 9/10
-          - 10/10
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: |
-            yarn.lock
-            compiler/yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-and-compiler-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'compiler/yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd compiler install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - name: Display structure of build
-        run: ls -R build
-      - run: node --version
-      - run: yarn test --build ${{ matrix.test_params }} --shard=${{ matrix.shard }} --ci
-
-  test_build_devtools:
-    name: yarn test-build (devtools)
-    needs: [build_and_lint, runtime_node_modules_cache]
-    strategy:
-      fail-fast: false
-      matrix:
-        shard:
-          - 1/5
-          - 2/5
-          - 3/5
-          - 4/5
-          - 5/5
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - name: Display structure of build
-        run: ls -R build
-      - run: node --version
-      - run: yarn test --build --project=devtools -r=experimental --shard=${{ matrix.shard }} --ci
-
-  process_artifacts_combined:
-    name: Process artifacts combined
-    needs: [build_and_lint, runtime_node_modules_cache]
-    permissions:
-      # https://github.com/actions/attest-build-provenance
-      id-token: write
-      attestations: write
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - name: Display structure of build
-        run: ls -R build
-      - run: echo ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }} >> build/COMMIT_SHA
-      - name: Scrape warning messages
-        run: |
-          mkdir -p ./build/__test_utils__
-          node ./scripts/print-warnings/print-warnings.js > build/__test_utils__/ReactAllWarnings.js
-        # Compress build directory into a single tarball for easy download
-      - run: tar -zcvf ./build.tgz ./build
-        # TODO: Migrate scripts to use `build` directory instead of `build2`
-      - run: cp ./build.tgz ./build2.tgz
-      - name: Archive build artifacts
-        id: upload_artifacts_combined
-        uses: actions/upload-artifact@v4
-        with:
-          name: artifacts_combined
-          path: |
-            ./build.tgz
-            ./build2.tgz
-          if-no-files-found: error
-      - uses: actions/attest-build-provenance@v2
-        # We don't verify builds generated from pull requests not originating from facebook/react.
-        # However, if the PR lands, the run on `main` will generate the attestation which can then
-        # be used to download a build via scripts/release/download-experimental-build.js.
-        #
-        # Note that this means that scripts/release/download-experimental-build.js must be run with
-        # --no-verify when downloading a build from a fork.
-        if: github.event_name == 'push' && github.ref_name == 'main' || github.event.pull_request.head.repo.full_name == github.repository
-        with:
-          subject-name: artifacts_combined.zip
-          subject-digest: sha256:${{ steps.upload_artifacts_combined.outputs.artifact-digest }}
-
-  check_error_codes:
-    name: Search build artifacts for unminified errors
-    needs: [build_and_lint, runtime_node_modules_cache]
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - name: Display structure of build
-        run: ls -R build
-      - name: Search build artifacts for unminified errors
-        run: |
-          yarn extract-errors
-          git diff --exit-code || (echo "Found unminified errors. Either update the error codes map or disable error minification for the affected build, if appropriate." && false)
-
-  check_release_dependencies:
-    name: Check release dependencies
-    needs: [build_and_lint, runtime_node_modules_cache]
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - name: Display structure of build
-        run: ls -R build
-      - run: yarn check-release-dependencies
-
-  RELEASE_CHANNEL_stable_yarn_test_dom_fixtures:
-    name: Check fixtures DOM (stable)
-    needs: build_and_lint
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4 # note: this does not reuse centralized cache since it has unique cache key
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: fixtures_dom-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'fixtures/dom/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn --cwd fixtures/dom install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - name: Display structure of build
-        run: ls -R build
-      - name: Run DOM fixture tests
-        run: |
-          yarn predev
-          yarn test
-        working-directory: fixtures/dom
-        env:
-          RELEASE_CHANNEL: stable
-
-  # ----- FLIGHT -----
-  run_fixtures_flight_tests:
-    name: Run fixtures Flight tests
-    needs: build_and_lint
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      # Fixture copies some built packages from the workroot after install.
-      # That means dependencies of the built packages are not installed.
-      # We need to install dependencies of the workroot to fulfill all dependency constraints
-      - name: Restore cached node_modules
-        uses: actions/cache@v4 # note: this does not reuse centralized cache since it has unique cache key
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: fixtures_flight-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'fixtures/flight/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd fixtures/flight install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Check Playwright version
-        id: playwright_version
-        run: echo "playwright_version=$(npm ls @playwright/test | grep @playwright | sed 's/.*@//' | head -1)" >> "$GITHUB_OUTPUT"
-      - name: Cache Playwright Browsers for version ${{ steps.playwright_version.outputs.playwright_version }}
-        id: cache_playwright_browsers
-        uses: actions/cache@v4
-        with:
-          path: ~/.cache/ms-playwright
-          key: playwright-browsers-v6-${{ runner.arch }}-${{ runner.os }}-${{ steps.playwright_version.outputs.playwright_version }}
-      - name: Playwright install deps
-        if: steps.cache_playwright_browsers.outputs.cache-hit != 'true'
-        working-directory: fixtures/flight
-        run: npx playwright install --with-deps chromium
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - name: Display structure of build
-        run: ls -R build
-      - name: Run tests
-        working-directory: fixtures/flight
-        run: yarn test
-        env:
-          # Otherwise the webserver is a blackbox
-          DEBUG: pw:webserver
-      - name: Archive Flight fixture artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: flight-playwright-report
-          path: fixtures/flight/playwright-report
-          if-no-files-found: warn
-      - name: Archive Flight fixture artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: flight-test-results
-          path: fixtures/flight/test-results
-          if-no-files-found: ignore
-
-  # ----- DEVTOOLS -----
-  build_devtools_and_process_artifacts:
-    name: Build DevTools and process artifacts
-    needs: [build_and_lint, runtime_node_modules_cache]
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        browser: [chrome, firefox, edge]
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - run: ./scripts/ci/pack_and_store_devtools_artifacts.sh ${{ matrix.browser }}
-        env:
-          RELEASE_CHANNEL: experimental
-      - name: Display structure of build
-        run: ls -R build
-      # Simplifies getting the extension for local testing
-      - name: Archive ${{ matrix.browser }} extension
-        uses: actions/upload-artifact@v4
-        with:
-          name: react-devtools-${{ matrix.browser }}-extension
-          path: build/devtools/${{ matrix.browser }}-extension.zip
-          if-no-files-found: error
-      - name: Archive ${{ matrix.browser }} metadata
-        uses: actions/upload-artifact@v4
-        with:
-          name: react-devtools-${{ matrix.browser }}-metadata
-          path: build/devtools/webpack-stats.*.json
-
-  merge_devtools_artifacts:
-    name: Merge DevTools artifacts
-    needs: build_devtools_and_process_artifacts
-    runs-on: ubuntu-latest
-    steps:
-      - name: Merge artifacts
-        uses: actions/upload-artifact/merge@v4
-        with:
-          name: react-devtools
-          pattern: react-devtools-*
-
-  run_devtools_e2e_tests:
-    name: Run DevTools e2e tests
-    needs: [build_and_lint, runtime_node_modules_cache]
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache/restore@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-node_modules-v7-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock') }}
-          # Don't use restore-keys here. Otherwise the cache grows indefinitely.
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Restore archived build
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - name: Check Playwright version
-        id: playwright_version
-        run: echo "playwright_version=$(npm ls @playwright/test | grep @playwright | sed 's/.*@//' | head -1)" >> "$GITHUB_OUTPUT"
-      - name: Cache Playwright Browsers for version ${{ steps.playwright_version.outputs.playwright_version }}
-        id: cache_playwright_browsers
-        uses: actions/cache@v4
-        with:
-          path: ~/.cache/ms-playwright
-          key: playwright-browsers-v6-${{ runner.arch }}-${{ runner.os }}-${{ steps.playwright_version.outputs.playwright_version }}
-      - name: Playwright install deps
-        if: steps.cache_playwright_browsers.outputs.cache-hit != 'true'
-        run: npx playwright install --with-deps chromium
-      - run: ./scripts/ci/run_devtools_e2e_tests.js
-        env:
-          RELEASE_CHANNEL: experimental
-      - name: Archive Playwright report
-        uses: actions/upload-artifact@v4
-        with:
-          name: devtools-playwright-artifacts
-          path: tmp/playwright-artifacts
-          if-no-files-found: warn
-
-  # ----- SIZEBOT -----
-  sizebot:
-    if: ${{ github.event_name == 'pull_request' && github.ref_name != 'main' && github.event.pull_request.base.ref == 'main' }}
-    name: Run sizebot
-    needs: [build_and_lint]
-    permissions:
-      # We use github.token to download the build artifact from a previous runtime_build_and_test.yml run
-      actions: read
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4 # note: this does not reuse centralized cache since it has unique cache key
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-release-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'scripts/release/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd scripts/release install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Download artifacts for base revision
-        # The build could have been generated from a fork, so we must download the build without
-        # any verification. This is safe since we only use this for sizebot calculation and the
-        # unverified artifact is not used. Additionally this workflow runs in the pull_request
-        # trigger so only restricted permissions are available.
-        run: |
-          GH_TOKEN=${{ github.token }} scripts/release/download-experimental-build.js --commit=$(git rev-parse ${{ github.event.pull_request.base.sha }}) ${{ (github.event.pull_request.head.repo.full_name != github.repository && '--noVerify') || ''}}
-          mv ./build ./base-build
-      - name: Delete extraneous files
-        # TODO: The `download-experimental-build` script copies the npm
-        # packages into the `node_modules` directory. This is a historical
-        # quirk of how the release script works. Let's pretend they
-        # don't exist.
-        run: rm -rf ./base-build/node_modules
-      - name: Display structure of base-build from origin/main
-        run: ls -R base-build
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - name: Restore archived build for PR
-        uses: actions/download-artifact@v4
-        with:
-          pattern: _build_*
-          path: build
-          merge-multiple: true
-      - name: Scrape warning messages
-        run: |
-          mkdir -p ./build/__test_utils__
-          node ./scripts/print-warnings/print-warnings.js > build/__test_utils__/ReactAllWarnings.js
-      - name: Display structure of build for PR
-        run: ls -R build
-      - run: echo ${{ github.event.inputs.commit_sha != '' && github.event.inputs.commit_sha || github.event.pull_request.head.sha || github.sha }} >> build/COMMIT_SHA
-      - run: node ./scripts/tasks/danger
-      - name: Archive sizebot results
-        uses: actions/upload-artifact@v4
-        with:
-          name: sizebot-message
-          path: sizebot-message.md
-          if-no-files-found: ignore

.github/workflows/runtime_commit_artifacts.yml

@@ -1,474 +0,0 @@
-name: (Runtime) Commit Artifacts for Meta WWW and fbsource V2
-
-on:
-  workflow_run:
-    workflows: ["(Runtime) Build and Test"]
-    types: [completed]
-    branches:
-      - main
-  workflow_dispatch:
-    inputs:
-      commit_sha:
-        required: false
-        type: string
-      force:
-        description: 'Force a commit to the builds/... branches'
-        required: true
-        default: false
-        type: boolean
-      dry_run:
-        description: Perform a dry run (run everything except push)
-        required: true
-        default: false
-        type: boolean
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-
-jobs:
-  download_artifacts:
-    runs-on: ubuntu-latest
-    permissions:
-      # We use github.token to download the build artifact from a previous runtime_build_and_test.yml run
-      actions: read
-    steps:
-      - uses: actions/checkout@v4
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-release-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'scripts/release/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd scripts/release install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Download artifacts for base revision
-        run: |
-          GH_TOKEN=${{ github.token }} scripts/release/download-experimental-build.js --commit=${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha }}
-      - name: Display structure of build
-        run: ls -R build
-      - name: Archive build
-        uses: actions/upload-artifact@v4
-        with:
-          name: build
-          path: build/
-          if-no-files-found: error
-
-
-  process_artifacts:
-    runs-on: ubuntu-latest
-    needs: [download_artifacts]
-    outputs:
-      www_branch_count: ${{ steps.check_branches.outputs.www_branch_count }}
-      fbsource_branch_count: ${{ steps.check_branches.outputs.fbsource_branch_count }}
-      last_version_classic: ${{ steps.get_last_version_www.outputs.last_version_classic }}
-      last_version_modern: ${{ steps.get_last_version_www.outputs.last_version_modern }}
-      last_version_rn: ${{ steps.get_last_version_rn.outputs.last_version_rn }}
-      current_version_classic: ${{ steps.get_current_version.outputs.current_version_classic }}
-      current_version_modern: ${{ steps.get_current_version.outputs.current_version_modern }}
-      current_version_rn: ${{ steps.get_current_version.outputs.current_version_rn }}
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: builds/facebook-www
-      - name: "Get last version string for www"
-        id: get_last_version_www
-        run: |
-          # Empty checks only needed for backwards compatibility,can remove later.
-          VERSION_CLASSIC=$( [ -f ./compiled/facebook-www/VERSION_CLASSIC ] && cat ./compiled/facebook-www/VERSION_CLASSIC || echo '' )
-          VERSION_MODERN=$( [ -f ./compiled/facebook-www/VERSION_MODERN ] && cat ./compiled/facebook-www/VERSION_MODERN || echo '' )
-          echo "Last classic version is $VERSION_CLASSIC"
-          echo "Last modern version is $VERSION_MODERN"
-          echo "last_version_classic=$VERSION_CLASSIC" >> "$GITHUB_OUTPUT"
-          echo "last_version_modern=$VERSION_MODERN" >> "$GITHUB_OUTPUT"
-      - uses: actions/checkout@v4
-        with:
-          ref: builds/facebook-fbsource
-      - name: "Get last version string for rn"
-        id: get_last_version_rn
-        run: |
-          # Empty checks only needed for backwards compatibility,can remove later.
-          VERSION_NATIVE_FB=$( [ -f ./compiled-rn/VERSION_NATIVE_FB ] && cat ./compiled-rn/VERSION_NATIVE_FB || echo '' )
-          echo "Last rn version is $VERSION_NATIVE_FB"
-          echo "last_version_rn=$VERSION_NATIVE_FB" >> "$GITHUB_OUTPUT"
-      - uses: actions/checkout@v4
-      - name: "Check branches"
-        id: check_branches
-        run: |
-          echo "www_branch_count=$(git ls-remote --heads origin "refs/heads/meta-www" | wc -l)" >> "$GITHUB_OUTPUT"
-          echo "fbsource_branch_count=$(git ls-remote --heads origin "refs/heads/meta-fbsource" | wc -l)" >> "$GITHUB_OUTPUT"
-      - name: Restore downloaded build
-        uses: actions/download-artifact@v4
-        with:
-          name: build
-          path: build
-      - name: Display structure of build
-        run: ls -R build
-      - name: Strip @license from eslint plugin and react-refresh
-        run: |
-          sed -i -e 's/ @license React*//' \
-            build/oss-experimental/eslint-plugin-react-hooks/cjs/eslint-plugin-react-hooks.development.js \
-            build/oss-experimental/react-refresh/cjs/react-refresh-babel.development.js
-      - name: Insert @headers into eslint plugin and react-refresh
-        run: |
-          sed -i -e 's/ LICENSE file in the root directory of this source tree./ LICENSE file in the root directory of this source tree.\n *\n * @noformat\n * @nolint\n * @lightSyntaxTransform\n * @preventMunge\n * @oncall react_core/' \
-            build/oss-experimental/eslint-plugin-react-hooks/cjs/eslint-plugin-react-hooks.development.js \
-            build/oss-experimental/react-refresh/cjs/react-refresh-babel.development.js
-      - name: Move relevant files for React in www into compiled
-        run: |
-          # Move the facebook-www folder into compiled
-          mkdir ./compiled
-          mv build/facebook-www ./compiled
-
-          # Move ReactAllWarnings.js to facebook-www
-          mkdir ./compiled/facebook-www/__test_utils__
-          mv build/__test_utils__/ReactAllWarnings.js ./compiled/facebook-www/__test_utils__/ReactAllWarnings.js
-
-          # Copy eslint-plugin-react-hooks
-          mkdir ./compiled/eslint-plugin-react-hooks
-          cp build/oss-experimental/eslint-plugin-react-hooks/cjs/eslint-plugin-react-hooks.development.js \
-            ./compiled/eslint-plugin-react-hooks/index.js
-
-          # Move unstable_server-external-runtime.js into facebook-www
-          mv build/oss-experimental/react-dom/unstable_server-external-runtime.js \
-            ./compiled/facebook-www/unstable_server-external-runtime.js
-
-          # Move react-refresh-babel.development.js into babel-plugin-react-refresh
-          mkdir ./compiled/babel-plugin-react-refresh
-          mv build/oss-experimental/react-refresh/cjs/react-refresh-babel.development.js \
-            ./compiled/babel-plugin-react-refresh/index.js
-
-          ls -R ./compiled
-      - name: Move relevant files for React in fbsource into compiled-rn
-        run: |
-          BASE_FOLDER='compiled-rn/facebook-fbsource/xplat/js'
-          mkdir -p ${BASE_FOLDER}/react-native-github/Libraries/Renderer/
-          mkdir -p ${BASE_FOLDER}/RKJSModules/vendor/react/{scheduler,react,react-dom,react-is,react-test-renderer}/
-
-          # Move React Native renderer
-          mv build/react-native/implementations/ $BASE_FOLDER/react-native-github/Libraries/Renderer/
-          mv build/react-native/shims/ $BASE_FOLDER/react-native-github/Libraries/Renderer/
-          mv build/facebook-react-native/scheduler/cjs/ $BASE_FOLDER/RKJSModules/vendor/react/scheduler/
-          mv build/facebook-react-native/react/cjs/ $BASE_FOLDER/RKJSModules/vendor/react/react/
-          mv build/facebook-react-native/react-dom/cjs/ $BASE_FOLDER/RKJSModules/vendor/react/react-dom/
-          mv build/facebook-react-native/react-is/cjs/ $BASE_FOLDER/RKJSModules/vendor/react/react-is/
-          mv build/facebook-react-native/react-test-renderer/cjs/ $BASE_FOLDER/RKJSModules/vendor/react/react-test-renderer/
-
-          # Delete the OSS renderers, these are sync'd to RN separately.
-          RENDERER_FOLDER=$BASE_FOLDER/react-native-github/Libraries/Renderer/implementations/
-          rm $RENDERER_FOLDER/ReactFabric-{dev,prod,profiling}.js
-          
-          # Delete the legacy renderer shim, this is not sync'd and will get deleted in the future.
-          SHIM_FOLDER=$BASE_FOLDER/react-native-github/Libraries/Renderer/shims/
-          rm $SHIM_FOLDER/ReactNative.js
-
-          # Copy eslint-plugin-react-hooks
-          # NOTE: This is different from www, here we include the full package
-          #       including package.json to include dependencies in fbsource.
-          mkdir "$BASE_FOLDER/tools"
-          cp -r build/oss-experimental/eslint-plugin-react-hooks "$BASE_FOLDER/tools"
-
-          # Move React Native version file
-          mv build/facebook-react-native/VERSION_NATIVE_FB ./compiled-rn/VERSION_NATIVE_FB
-
-          ls -R ./compiled-rn
-      - name: Add REVISION files
-        run: |
-          echo ${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha }} >> ./compiled/facebook-www/REVISION
-          cp ./compiled/facebook-www/REVISION ./compiled/facebook-www/REVISION_TRANSFORMS
-          echo ${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha }} >> ./compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION
-      - name: "Get current version string"
-        id: get_current_version
-        run: |
-          VERSION_CLASSIC=$(cat ./compiled/facebook-www/VERSION_CLASSIC)
-          VERSION_MODERN=$(cat ./compiled/facebook-www/VERSION_MODERN)
-          VERSION_NATIVE_FB=$(cat ./compiled-rn/VERSION_NATIVE_FB)
-          echo "Current classic version is $VERSION_CLASSIC"
-          echo "Current modern version is $VERSION_MODERN"
-          echo "Current rn version is $VERSION_NATIVE_FB"
-          echo "current_version_classic=$VERSION_CLASSIC" >> "$GITHUB_OUTPUT"
-          echo "current_version_modern=$VERSION_MODERN" >> "$GITHUB_OUTPUT"
-          echo "current_version_rn=$VERSION_NATIVE_FB" >> "$GITHUB_OUTPUT"
-      - uses: actions/upload-artifact@v4
-        with:
-          name: compiled
-          path: compiled/
-          if-no-files-found: error
-      - uses: actions/upload-artifact@v4
-        with:
-          name: compiled-rn
-          path: compiled-rn/
-          if-no-files-found: error
-
-  commit_www_artifacts:
-    needs: [download_artifacts, process_artifacts]
-    if: inputs.force == true || (github.ref == 'refs/heads/main' && needs.process_artifacts.outputs.www_branch_count == '0')
-    runs-on: ubuntu-latest
-    permissions:
-      # Used to push a commit to builds/facebook-www
-      contents: write
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: builds/facebook-www
-      - name: Ensure clean directory
-        run: rm -rf compiled
-      - uses: actions/download-artifact@v4
-        with:
-          name: compiled
-          path: compiled/
-      - name: Revert version changes
-        if: needs.process_artifacts.outputs.last_version_classic != '' && needs.process_artifacts.outputs.last_version_modern != ''
-        env:
-          CURRENT_VERSION_CLASSIC: ${{ needs.process_artifacts.outputs.current_version_classic }}
-          CURRENT_VERSION_MODERN: ${{ needs.process_artifacts.outputs.current_version_modern }}
-          LAST_VERSION_CLASSIC: ${{ needs.process_artifacts.outputs.last_version_classic }}
-          LAST_VERSION_MODERN: ${{ needs.process_artifacts.outputs.last_version_modern }}
-        run: |
-          echo "Reverting $CURRENT_VERSION_CLASSIC to $LAST_VERSION_CLASSIC"
-          grep -rl "$CURRENT_VERSION_CLASSIC" ./compiled || echo "No files found with $CURRENT_VERSION_CLASSIC"
-          grep -rl "$CURRENT_VERSION_CLASSIC" ./compiled | xargs -r sed -i -e "s/$CURRENT_VERSION_CLASSIC/$LAST_VERSION_CLASSIC/g"
-          grep -rl "$CURRENT_VERSION_CLASSIC" ./compiled || echo "Classic version reverted"
-          echo "===================="
-          echo "Reverting $CURRENT_VERSION_MODERN to $LAST_VERSION_MODERN"
-          grep -rl "$CURRENT_VERSION_MODERN" ./compiled || echo "No files found with $CURRENT_VERSION_MODERN"
-          grep -rl "$CURRENT_VERSION_MODERN" ./compiled | xargs -r sed -i -e "s/$CURRENT_VERSION_MODERN/$LAST_VERSION_MODERN/g"
-          grep -rl "$CURRENT_VERSION_MODERN" ./compiled || echo "Modern version reverted"
-      - name: Check for changes
-        if: inputs.force != true
-        id: check_should_commit
-        run: |
-          echo "Full git status"
-          git add .
-          git status
-          echo "===================="
-          if git status --porcelain | grep -qv '/REVISION'; then
-            echo "Changes detected"
-            echo "===== Changes ====="
-            git --no-pager diff -U0 | grep '^[+-]' | head -n 50
-            echo "==================="
-            echo "should_commit=true" >> "$GITHUB_OUTPUT"
-          else
-            echo "No Changes detected"
-            echo "should_commit=false" >> "$GITHUB_OUTPUT"
-          fi
-      - name: Re-apply version changes
-        if: inputs.force == true || (steps.check_should_commit.outputs.should_commit == 'true' && needs.process_artifacts.outputs.last_version_classic != '' && needs.process_artifacts.outputs.last_version_modern != '')
-        env:
-          CURRENT_VERSION_CLASSIC: ${{ needs.process_artifacts.outputs.current_version_classic }}
-          CURRENT_VERSION_MODERN: ${{ needs.process_artifacts.outputs.current_version_modern }}
-          LAST_VERSION_CLASSIC: ${{ needs.process_artifacts.outputs.last_version_classic }}
-          LAST_VERSION_MODERN: ${{ needs.process_artifacts.outputs.last_version_modern }}
-        run: |
-          echo "Re-applying $LAST_VERSION_CLASSIC to $CURRENT_VERSION_CLASSIC"
-          grep -rl "$LAST_VERSION_CLASSIC" ./compiled || echo "No files found with $LAST_VERSION_CLASSIC"
-          grep -rl "$LAST_VERSION_CLASSIC" ./compiled | xargs -r sed -i -e "s/$LAST_VERSION_CLASSIC/$CURRENT_VERSION_CLASSIC/g"
-          grep -rl "$LAST_VERSION_CLASSIC" ./compiled || echo "Classic version re-applied"
-          echo "===================="
-          echo "Re-applying $LAST_VERSION_MODERN to $CURRENT_VERSION_MODERN"
-          grep -rl "$LAST_VERSION_MODERN" ./compiled || echo "No files found with $LAST_VERSION_MODERN"
-          grep -rl "$LAST_VERSION_MODERN" ./compiled | xargs -r sed -i -e "s/$LAST_VERSION_MODERN/$CURRENT_VERSION_MODERN/g"
-          grep -rl "$LAST_VERSION_MODERN" ./compiled || echo "Classic version re-applied"
-      - name: Will commit these changes
-        if: inputs.force == true || steps.check_should_commit.outputs.should_commit == 'true'
-        run: |
-          git add .
-          git status
-      - name: Check commit message
-        if: inputs.dry_run
-        run: |
-          git fetch origin --quiet
-          git show ${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha }} --no-patch --pretty=format:"%B"
-      - name: Commit changes to branch
-        if: inputs.force == true || steps.check_should_commit.outputs.should_commit == 'true'
-        run: |
-          git config --global user.email "${{ format('{0}@users.noreply.github.com', github.triggering_actor) }}"
-          git config --global user.name "${{ github.triggering_actor }}"
-
-          git fetch origin --quiet
-          git commit -m "$(git show ${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha }} --no-patch --pretty=format:'%B%n%nDiffTrain build for [${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha }}](https://github.com/facebook/react/commit/${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha}})')" || echo "No changes to commit"
-      - name: Push changes to branch
-        if: inputs.dry_run == false && (inputs.force == true || steps.check_should_commit.outputs.should_commit == 'true')
-        run: git push
-
-  commit_fbsource_artifacts:
-    needs: [download_artifacts, process_artifacts]
-    permissions:
-      # Used to push a commit to builds/facebook-fbsource
-      contents: write
-    if: inputs.force == true || (github.ref == 'refs/heads/main' && needs.process_artifacts.outputs.fbsource_branch_count == '0')
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: builds/facebook-fbsource
-      - name: Ensure clean directory
-        run: rm -rf compiled-rn
-      - uses: actions/download-artifact@v4
-        with:
-          name: compiled-rn
-          path: compiled-rn/
-      - name: Revert version changes
-        if: needs.process_artifacts.outputs.last_version_rn != ''
-        env:
-          CURRENT_VERSION: ${{ needs.process_artifacts.outputs.current_version_rn }}
-          LAST_VERSION: ${{ needs.process_artifacts.outputs.last_version_rn }}
-        run: |
-          echo "Reverting $CURRENT_VERSION to $LAST_VERSION"
-          grep -rl "$CURRENT_VERSION" ./compiled-rn || echo "No files found with $CURRENT_VERSION"
-          grep -rl "$CURRENT_VERSION" ./compiled-rn | xargs -r sed -i -e "s/$CURRENT_VERSION/$LAST_VERSION/g"
-          grep -rl "$CURRENT_VERSION" ./compiled-rn || echo "Version reverted"
-      - name: Check for changes
-        if: inputs.force != 'true'
-        id: check_should_commit
-        run: |
-          echo "Full git status"
-          git add .
-          git --no-pager diff -U0 --cached | grep '^[+-]' | head -n 100
-          echo "===================="
-          # Ignore REVISION or lines removing @generated headers.
-          if git diff --cached ':(exclude)*REVISION' ':(exclude)*/eslint-plugin-react-hooks/package.json' | grep -vE "^(@@|diff|index|\-\-\-|\+\+\+|\- \* @generated SignedSource)" | grep "^[+-]" > /dev/null; then
-            echo "Changes detected"
-            echo "===== Changes ====="
-            git --no-pager diff --cached ':(exclude)*REVISION' ':(exclude)*/eslint-plugin-react-hooks/package.json' | grep -vE "^(@@|diff|index|\-\-\-|\+\+\+|\- \* @generated SignedSource)" | grep "^[+-]" | head -n 50
-            echo "==================="
-            echo "should_commit=true" >> "$GITHUB_OUTPUT"
-          else
-            echo "No Changes detected"
-            echo "should_commit=false" >> "$GITHUB_OUTPUT"
-          fi
-      - name: Re-apply version changes
-        if: inputs.force == true || (steps.check_should_commit.outputs.should_commit == 'true' && needs.process_artifacts.outputs.last_version_rn != '')
-        env:
-          CURRENT_VERSION: ${{ needs.process_artifacts.outputs.current_version_rn }}
-          LAST_VERSION: ${{ needs.process_artifacts.outputs.last_version_rn }}
-        run: |
-          echo "Re-applying $LAST_VERSION to $CURRENT_VERSION"
-          grep -rl "$LAST_VERSION" ./compiled-rn || echo "No files found with $LAST_VERSION"
-          grep -rl "$LAST_VERSION" ./compiled-rn | xargs -r sed -i -e "s/$LAST_VERSION/$CURRENT_VERSION/g"
-          grep -rl "$LAST_VERSION" ./compiled-rn || echo "Version re-applied"
-      - name: Add files for signing
-        if: inputs.force == true || steps.check_should_commit.outputs.should_commit == 'true'
-        run: |
-          echo ":"
-          git add .
-      - name: Signing files
-        if: inputs.force == true || steps.check_should_commit.outputs.should_commit == 'true'
-        uses: actions/github-script@v7
-        with:
-          script: |
-            // TODO: Move this to a script file.
-            // We currently can't call scripts from the repo because
-            // at this point in the workflow, we're on the compiled
-            // artifact branch (so the scripts don't exist).
-            // We can fix this with a composite action in the main repo.
-            // This script is duplicated above.
-            const fs = require('fs');
-            const crypto = require('crypto');
-            const {execSync} = require('child_process');
-
-            // TODO: when we move this to a script, we can use this from npm.
-            // Copy of signedsource since we can't install deps on this branch.
-            const GENERATED = '@' + 'generated';
-            const NEWTOKEN = '<<SignedSource::*O*zOeWoEQle#+L!plEphiEmie@IsG>>';
-            const PATTERN = new RegExp(`${GENERATED} (?:SignedSource<<([a-f0-9]{32})>>)`);
-
-            const TokenNotFoundError = new Error(
-              `SignedSource.signFile(...): Cannot sign file without token: ${NEWTOKEN}`
-            );
-
-            function hash(data, encoding) {
-              const md5sum = crypto.createHash('md5');
-              md5sum.update(data, encoding);
-              return md5sum.digest('hex');
-            }
-
-            const SignedSource = {
-              getSigningToken() {
-                return `${GENERATED} ${NEWTOKEN}`;
-              },
-              isSigned(data) {
-                return PATTERN.exec(data) != null;
-              },
-              signFile(data) {
-                if (!data.includes(NEWTOKEN)) {
-                  if (SignedSource.isSigned(data)) {
-                    // Signing a file that was previously signed.
-                   data = data.replace(PATTERN, SignedSource.getSigningToken());
-                  } else {
-                    throw TokenNotFoundError;
-                  }
-                }
-                return data.replace(NEWTOKEN, `SignedSource<<${hash(data, 'utf8')}>>`);
-              },
-            };
-
-            const directory = './compiled-rn';
-            console.log('Signing files in directory:', directory);
-            try {
-              const result = execSync(`git status --porcelain ${directory}`, {encoding: 'utf8'});
-              console.log(result);
-
-              // Parse the git status output to get file paths!
-              const files = result.split('\n').filter(file => file.endsWith('.js'));
-
-              if (files.length === 0) {
-                throw new Error(
-                  'git status returned no files to sign. this job should not have run.'
-                );
-              } else {
-                files.forEach(line => {
-                  let file = null;
-                  if (line.startsWith('D ')) {
-                    return;
-                  } else if (line.startsWith('R ')) {
-                    file = line.slice(line.indexOf('->') + 3);
-                  } else {
-                    file = line.slice(3).trim();
-                  }
-                  if (file) {
-                    console.log('  Signing file:', file);
-                    const originalContents = fs.readFileSync(file, 'utf8');
-                    const signedContents = SignedSource.signFile(
-                      originalContents
-                        // Need to add the header in, since it's not inserted at build time.
-                        .replace(' */\n', ` * ${SignedSource.getSigningToken()}\n */\n`)
-                    );
-
-                    fs.writeFileSync(file, signedContents, 'utf8');
-                  }
-                });
-              }
-            } catch (e) {
-              process.exitCode = 1;
-              console.error('Error signing files:', e);
-            }
-      - name: Will commit these changes
-        if: inputs.force == true || steps.check_should_commit.outputs.should_commit == 'true'
-        run: |
-          git add .
-          git status
-      - name: Check commit message
-        if: inputs.dry_run
-        run: |
-          git fetch origin --quiet
-          git show ${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha }} --no-patch --pretty=format:"%B"
-      - name: Commit changes to branch
-        if: inputs.force == true || steps.check_should_commit.outputs.should_commit == 'true'
-        run: |
-          git config --global user.email "${{ format('{0}@users.noreply.github.com', github.triggering_actor) }}"
-          git config --global user.name "${{ github.triggering_actor }}"
-
-          git fetch origin --quiet
-          git commit -m "$(git show ${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha }} --no-patch --pretty=format:'%B%n%nDiffTrain build for [${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha }}](https://github.com/facebook/react/commit/${{ inputs.commit_sha || github.event.workflow_run.head_sha || github.sha}})')" || echo "No changes to commit"
-      - name: Push changes to branch
-        if: inputs.dry_run == false && (inputs.force == true || steps.check_should_commit.outputs.should_commit == 'true')
-        run: git push

.github/workflows/runtime_discord_notify.yml

@@ -1,51 +0,0 @@
-name: (Runtime) Discord Notify
-
-on:
-  pull_request_target:
-    types: [opened, ready_for_review]
-    paths-ignore:
-      - packages/react-devtools**
-      - compiler/**
-      - .github/workflows/compiler_**.yml
-      - .github/workflows/devtools**.yml
-
-permissions: {}
-
-jobs:
-  check_access:
-    if: ${{ github.event.pull_request.draft == false }}
-    runs-on: ubuntu-latest
-    outputs:
-      is_member_or_collaborator: ${{ steps.check_is_member_or_collaborator.outputs.is_member_or_collaborator }}
-    steps:
-      - run: echo ${{ github.event.pull_request.author_association }}
-      - name: Check is member or collaborator
-        id: check_is_member_or_collaborator
-        if: ${{ github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'COLLABORATOR' }}
-        run: echo "is_member_or_collaborator=true" >> "$GITHUB_OUTPUT"
-
-  check_maintainer:
-    if: ${{ needs.check_access.outputs.is_member_or_collaborator == 'true' || needs.check_access.outputs.is_member_or_collaborator == true }}
-    needs: [check_access]
-    uses: facebook/react/.github/workflows/shared_check_maintainer.yml@main
-    permissions:
-      # Used by check_maintainer
-      contents: read
-    with:
-      actor: ${{ github.event.pull_request.user.login }}
-
-  notify:
-    if: ${{ needs.check_maintainer.outputs.is_core_team == 'true' }}
-    needs: check_maintainer
-    runs-on: ubuntu-latest
-    steps:
-      - name: Discord Webhook Action
-        uses: tsickert/discord-webhook@86dc739f3f165f16dadc5666051c367efa1692f4
-        with:
-          webhook-url: ${{ secrets.DISCORD_WEBHOOK_URL }}
-          embed-author-name: ${{ github.event.pull_request.user.login }}
-          embed-author-url: ${{ github.event.pull_request.user.html_url }}
-          embed-author-icon-url: ${{ github.event.pull_request.user.avatar_url }}
-          embed-title: '#${{ github.event.number }} (+${{github.event.pull_request.additions}} -${{github.event.pull_request.deletions}}): ${{ github.event.pull_request.title }}'
-          embed-description: ${{ github.event.pull_request.body }}
-          embed-url: ${{ github.event.pull_request.html_url }}

.github/workflows/runtime_eslint_plugin_e2e.yml

@@ -1,65 +0,0 @@
-name: (Runtime) ESLint Plugin E2E
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-    paths-ignore:
-      - compiler/**
-
-permissions: {}
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.run_id }}
-  cancel-in-progress: true
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-
-jobs:
-  # ----- TESTS -----
-  test:
-    name: ESLint v${{ matrix.eslint_major }}
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        eslint_major:
-          - "6"
-          - "7"
-          - "8"
-          - "9"
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.pull_request.head.sha || github.sha }}
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: |
-            yarn.lock
-            compiler/yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-and-compiler-eslint_e2e-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'compiler/yarn.lock', 'fixtures/eslint-v*/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd compiler install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Install fixture dependencies
-        working-directory: ./fixtures/eslint-v${{ matrix.eslint_major }}
-        run: yarn --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - name: Build plugin
-        working-directory: fixtures/eslint-v${{ matrix.eslint_major }}
-        run: node build.mjs
-      - name: Run lint test
-        working-directory: ./fixtures/eslint-v${{ matrix.eslint_major }}
-        run: yarn lint

.github/workflows/runtime_fuzz_tests.yml

@@ -1,33 +0,0 @@
-name: (Runtime) Fuzz tests
-
-on:
-  schedule:
-    - cron: 0 * * * *
-  push:
-    branches:
-      - main
-  workflow_dispatch:
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-
-jobs:
-  test_fuzz:
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4.1.0
-    - uses: actions/setup-node@v4
-      with:
-        node-version-file: '.nvmrc'
-        cache: 'yarn'
-    - name: Install dependencies
-      run: yarn install --frozen-lockfile
-      env:
-        ELECTRON_SKIP_BINARY_DOWNLOAD: "1"
-      shell: bash
-    - name: Run fuzz tests
-      run: |-
-        FUZZ_TEST_SEED=$RANDOM yarn test fuzz --ci
-        FUZZ_TEST_SEED=$RANDOM yarn test --prod fuzz --ci

.github/workflows/runtime_prereleases.yml

@@ -1,110 +0,0 @@
-name: (Runtime) Publish Prereleases
-
-on:
-  workflow_call:
-    inputs:
-      commit_sha:
-        required: true
-        default: ''
-        type: string
-      release_channel:
-        required: true
-        type: string
-      dist_tag:
-        required: true
-        type: string
-      enableFailureNotification:
-        description: 'Whether to notify the team on Discord when the release fails. Useful if this workflow is called from an automation.'
-        required: false
-        type: boolean
-      only_packages:
-        description: Packages to publish (space separated)
-        type: string
-      skip_packages:
-        description: Packages to NOT publish (space separated)
-        type: string
-      dry:
-        required: true
-        description: Dry run instead of publish?
-        type: boolean
-        default: true
-    secrets:
-      DISCORD_WEBHOOK_URL:
-        description: 'Discord webhook URL to notify on failure. Only required if enableFailureNotification is true.'
-        required: false
-      GH_TOKEN:
-        required: true
-      NPM_TOKEN:
-        required: true
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-  NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-
-jobs:
-  publish_prerelease:
-    name: Publish prelease (${{ inputs.release_channel }}) ${{ inputs.commit_sha }} @${{ inputs.dist_tag }}
-    runs-on: ubuntu-latest
-    permissions:
-      # We use github.token to download the build artifact from a previous runtime_build_and_test.yml run
-      actions: read
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-release-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'scripts/release/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd scripts/release install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: cp ./scripts/release/ci-npmrc ~/.npmrc
-      - run: |
-          GH_TOKEN=${{ secrets.GH_TOKEN }} scripts/release/prepare-release-from-ci.js --skipTests -r ${{ inputs.release_channel }} --commit=${{ inputs.commit_sha }}
-      - name: Check prepared files
-        run: ls -R build/node_modules
-      - if: '${{ inputs.only_packages }}'
-        name: 'Publish ${{ inputs.only_packages }}'
-        run: |
-          scripts/release/publish.js \
-            --ci \
-            --tags=${{ inputs.dist_tag }} \
-            --onlyPackages=${{ inputs.only_packages }} ${{ (inputs.dry && '') || '\'}}
-            ${{ inputs.dry && '--dry' || '' }}
-      - if: '${{ inputs.skip_packages }}'
-        name: 'Publish all packages EXCEPT ${{ inputs.skip_packages }}'
-        run: |
-          scripts/release/publish.js \
-            --ci \
-            --tags=${{ inputs.dist_tag }} \
-            --skipPackages=${{ inputs.skip_packages }} ${{ (inputs.dry && '') || '\'}}
-            ${{ inputs.dry && '--dry' || '' }}
-      - if: '${{ !inputs.skip_packages && !inputs.only_packages }}'
-        name: 'Publish all packages'
-        run: |
-          scripts/release/publish.js \
-            --ci \
-            --tags=${{ inputs.dist_tag }} ${{ (inputs.dry && '') || '\'}}
-            ${{ inputs.dry && '--dry' || '' }}
-      - name: Notify Discord on failure
-        if: failure() && inputs.enableFailureNotification == true
-        uses: tsickert/discord-webhook@86dc739f3f165f16dadc5666051c367efa1692f4
-        with:
-          webhook-url: ${{ secrets.DISCORD_WEBHOOK_URL }}
-          embed-author-name: "GitHub Actions"
-          embed-title: '[Runtime] Publish of ${{ inputs.release_channel }}@${{ inputs.dist_tag}} release failed'
-          embed-url: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}/attempts/${{ github.run_attempt }}

.github/workflows/runtime_prereleases_manual.yml

@@ -1,102 +0,0 @@
-name: (Runtime) Publish Prereleases Manual
-
-on:
-  workflow_dispatch:
-    inputs:
-      prerelease_commit_sha:
-        required: true
-      only_packages:
-        description: Packages to publish (space separated)
-        type: string
-      skip_packages:
-        description: Packages to NOT publish (space separated)
-        type: string
-      dry:
-        required: true
-        description: Dry run instead of publish?
-        type: boolean
-        default: true
-      experimental_only:
-        type: boolean
-        description: Only publish to the experimental tag
-        default: false
-      force_notify:
-        description: Force a Discord notification?
-        type: boolean
-        default: false
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-
-jobs:
-  notify:
-    if: ${{ inputs.force_notify || inputs.dry == false || inputs.dry == 'false' }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Discord Webhook Action
-        uses: tsickert/discord-webhook@86dc739f3f165f16dadc5666051c367efa1692f4
-        with:
-          webhook-url: ${{ secrets.DISCORD_WEBHOOK_URL }}
-          embed-author-name: ${{ github.event.sender.login }}
-          embed-author-url: ${{ github.event.sender.html_url }}
-          embed-author-icon-url: ${{ github.event.sender.avatar_url }}
-          embed-title: "⚠️ Publishing ${{ inputs.experimental_only && 'EXPERIMENTAL' || 'CANARY & EXPERIMENTAL' }} release ${{ (inputs.dry && ' (dry run)') || '' }}"
-          embed-description: |
-            ```json
-            ${{ toJson(inputs) }}
-            ```
-          embed-url: https://github.com/facebook/react/actions/runs/${{ github.run_id }}
-
-  publish_prerelease_canary:
-    if: ${{ !inputs.experimental_only }}
-    name: Publish to Canary channel
-    uses: facebook/react/.github/workflows/runtime_prereleases.yml@main
-    permissions:
-      # We use github.token to download the build artifact from a previous runtime_build_and_test.yml run
-      actions: read
-    with:
-      commit_sha: ${{ inputs.prerelease_commit_sha }}
-      release_channel: stable
-      # The tags to use when publishing canaries. The main one we should
-      # always include is "canary" but we can use multiple (e.g. alpha,
-      # beta, rc). To declare multiple, use a comma-separated string, like
-      # this:
-      #   dist_tag: "canary,alpha,beta,rc"
-      #
-      # TODO: We currently tag canaries with "next" in addition to "canary"
-      # because this used to be called the "next" channel and some
-      # downstream consumers might still expect that tag. We can remove this
-      # after some time has elapsed and the change has been communicated.
-      dist_tag: canary,next
-      only_packages: ${{ inputs.only_packages }}
-      skip_packages: ${{ inputs.skip_packages }}
-      dry: ${{ inputs.dry }}
-    secrets:
-      NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-  publish_prerelease_experimental:
-    name: Publish to Experimental channel
-    uses: facebook/react/.github/workflows/runtime_prereleases.yml@main
-    permissions:
-      # We use github.token to download the build artifact from a previous runtime_build_and_test.yml run
-      actions: read
-    # NOTE: Intentionally running these jobs sequentially because npm
-    # will sometimes fail if you try to concurrently publish two
-    # different versions of the same package, even if they use different
-    # dist tags.
-    needs: publish_prerelease_canary
-    # Ensures the job runs even if canary is skipped
-    if: always()
-    with:
-      commit_sha: ${{ inputs.prerelease_commit_sha }}
-      release_channel: experimental
-      dist_tag: experimental
-      only_packages: ${{ inputs.only_packages }}
-      skip_packages: ${{ inputs.skip_packages }}
-      dry: ${{ inputs.dry }}
-    secrets:
-      NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/runtime_prereleases_nightly.yml

@@ -1,51 +0,0 @@
-name: (Runtime) Publish Prereleases Nightly
-
-on:
-  schedule:
-    # At 10 minutes past 16:00 on Mon, Tue, Wed, Thu, and Fri
-    - cron: 10 16 * * 1,2,3,4,5
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-
-jobs:
-  publish_prerelease_canary:
-    name: Publish to Canary channel
-    uses: facebook/react/.github/workflows/runtime_prereleases.yml@main
-    permissions:
-      # We use github.token to download the build artifact from a previous runtime_build_and_test.yml run
-      actions: read
-    with:
-      commit_sha: ${{ github.sha }}
-      release_channel: stable
-      dist_tag: canary,next
-      enableFailureNotification: true
-      dry: false
-    secrets:
-      DISCORD_WEBHOOK_URL: ${{ secrets.DISCORD_WEBHOOK_URL }}
-      NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-  publish_prerelease_experimental:
-    name: Publish to Experimental channel
-    uses: facebook/react/.github/workflows/runtime_prereleases.yml@main
-    permissions:
-      # We use github.token to download the build artifact from a previous runtime_build_and_test.yml run
-      actions: read
-    # NOTE: Intentionally running these jobs sequentially because npm
-    # will sometimes fail if you try to concurrently publish two
-    # different versions of the same package, even if they use different
-    # dist tags.
-    needs: publish_prerelease_canary
-    with:
-      commit_sha: ${{ github.sha }}
-      release_channel: experimental
-      dist_tag: experimental
-      enableFailureNotification: true
-      dry: false
-    secrets:
-      DISCORD_WEBHOOK_URL: ${{ secrets.DISCORD_WEBHOOK_URL }}
-      NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/runtime_releases_from_npm_manual.yml

@@ -1,128 +0,0 @@
-name: (Runtime) Publish Releases from NPM Manual
-
-on:
-  workflow_dispatch:
-    inputs:
-      version_to_promote:
-        required: true
-        description: Current npm version (non-experimental) to promote
-        type: string
-      version_to_publish:
-        required: true
-        description: Version to publish for the specified packages
-        type: string
-      only_packages:
-        description: Packages to publish (space separated)
-        type: string
-      skip_packages:
-        description: Packages to NOT publish (space separated)
-        type: string
-      tags:
-        description: NPM tags (space separated)
-        type: string
-        default: untagged
-      dry:
-        required: true
-        description: Dry run instead of publish?
-        type: boolean
-        default: true
-      force_notify:
-        description: Force a Discord notification?
-        type: boolean
-        default: false
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-  NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
-
-jobs:
-  notify:
-    if: ${{ inputs.force_notify || inputs.dry == false || inputs.dry == 'false' }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Discord Webhook Action
-        uses: tsickert/discord-webhook@86dc739f3f165f16dadc5666051c367efa1692f4
-        with:
-          webhook-url: ${{ secrets.DISCORD_WEBHOOK_URL }}
-          embed-author-name: ${{ github.event.sender.login }}
-          embed-author-url: ${{ github.event.sender.html_url }}
-          embed-author-icon-url: ${{ github.event.sender.avatar_url }}
-          embed-title: "⚠️ Publishing release from NPM${{ (inputs.dry && ' (dry run)') || '' }}"
-          embed-description: |
-            ```json
-            ${{ toJson(inputs) }}
-            ```
-          embed-url: https://github.com/facebook/react/actions/runs/${{ github.run_id }}
-
-  publish:
-    name: Publish releases
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: runtime-release-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('yarn.lock', 'scripts/release/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn --cwd scripts/release install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: cp ./scripts/release/ci-npmrc ~/.npmrc
-      - if: '${{ inputs.only_packages }}'
-        name: 'Prepare ${{ inputs.only_packages }} from NPM'
-        run: |
-          scripts/release/prepare-release-from-npm.js \
-            --ci \
-            --skipTests \
-            --version=${{ inputs.version_to_promote }} \
-            --publishVersion=${{ inputs.version_to_publish }} \
-            --onlyPackages=${{ inputs.only_packages }}
-      - if: '${{ inputs.skip_packages }}'
-        name: 'Prepare all packages EXCEPT ${{ inputs.skip_packages }} from NPM'
-        run: |
-          scripts/release/prepare-release-from-npm.js \
-            --ci \
-            --skipTests \
-            --version=${{ inputs.version_to_promote }} \
-            --publishVersion=${{ inputs.version_to_publish }} \
-            --skipPackages=${{ inputs.skip_packages }}
-      - name: Check prepared files
-        run: ls -R build/node_modules
-      - if: '${{ inputs.only_packages }}'
-        name: 'Publish ${{ inputs.only_packages }}'
-        run: |
-          scripts/release/publish.js \
-            --ci \
-            --tags=${{ inputs.tags }} \
-            --publishVersion=${{ inputs.version_to_publish }} \
-            --onlyPackages=${{ inputs.only_packages }} ${{ (inputs.dry && '') || '\'}}
-            ${{ inputs.dry && '--dry' || '' }}
-      - if: '${{ inputs.skip_packages }}'
-        name: 'Publish all packages EXCEPT ${{ inputs.skip_packages }}'
-        run: |
-          scripts/release/publish.js \
-            --ci \
-            --tags=${{ inputs.tags }} \
-            --publishVersion=${{ inputs.version_to_publish }} \
-            --skipPackages=${{ inputs.skip_packages }} ${{ (inputs.dry && '') || '\'}}
-            ${{ inputs.dry && '--dry' || '' }}
-      - name: Archive released package for debugging
-        uses: actions/upload-artifact@v4
-        with:
-          name: build
-          path: |
-            ./build/node_modules

.github/workflows/shared_check_maintainer.yml

@@ -1,58 +0,0 @@
-name: (Shared) Check maintainer
-
-on:
-  workflow_call:
-    inputs:
-      actor:
-        required: true
-        type: string
-    outputs:
-      is_core_team:
-        value: ${{ jobs.check_maintainer.outputs.is_core_team }}
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-
-jobs:
-  check_maintainer:
-    runs-on: ubuntu-latest
-    permissions:
-      # We fetch the contents of the MAINTAINERS file
-      contents: read
-    outputs:
-      is_core_team: ${{ steps.check_if_actor_is_maintainer.outputs.result }}
-    steps:
-      - name: Check if actor is maintainer
-        id: check_if_actor_is_maintainer
-        uses: actions/github-script@v7
-        with:
-          script: |
-            const fs = require('fs');
-            const actor = '${{ inputs.actor }}';
-            const res = await github.rest.repos.getContent({
-              owner: 'facebook',
-              repo: 'react',
-              path: 'MAINTAINERS',
-              ref: 'main',
-              headers: { Accept: 'application/vnd.github+json' }
-            });
-            if (res.status !== 200) {
-              console.error(res);
-              throw new Error('Unable to fetch MAINTAINERS file');
-            }
-            content = Buffer.from(res.data.content, 'base64').toString();
-            if (content == null || typeof content !== 'string') {
-              throw new Error('Unable to retrieve MAINTAINERS file');
-            }
-
-            const maintainers = new Set(content.split('\n'));
-            if (maintainers.has(actor)) {
-              console.log(`🟢 ${actor} is a maintainer`);
-              return true;
-            }
-            console.log(`🔴 ${actor} is NOT a maintainer`);
-            return null;

.github/workflows/shared_cleanup_merged_branch_caches.yml

@@ -1,41 +0,0 @@
-# https://github.com/actions/cache/blob/main/tips-and-workarounds.md#force-deletion-of-caches-overriding-default-cache-eviction-policy
-
-name: (Shared) Cleanup Merged Branch Caches
-on:
-  pull_request:
-    types:
-      - closed
-  workflow_dispatch:
-    inputs:
-      pr_number:
-        required: true
-        type: string
-
-permissions: {}
-
-jobs:
-  cleanup:
-    runs-on: ubuntu-latest
-    permissions:
-      # `actions:write` permission is required to delete caches
-      #   See also: https://docs.github.com/en/rest/actions/cache?apiVersion=2022-11-28#delete-a-github-actions-cache-for-a-repository-using-a-cache-id
-      actions: write
-      contents: read
-    steps:
-      - name: Cleanup
-        run: |
-          echo "Fetching list of cache key"
-          cacheKeysForPR=$(gh cache list --ref $BRANCH --limit 100 --json id --jq '.[].id')
-
-          ## Setting this to not fail the workflow while deleting cache keys.
-          set +e
-          for cacheKey in $cacheKeysForPR
-          do
-              gh cache delete $cacheKey
-              echo "Deleting $cacheKey"
-          done
-          echo "Done"
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GH_REPO: ${{ github.repository }}
-          BRANCH: refs/pull/${{ inputs.pr_number || github.event.pull_request.number }}/merge

.github/workflows/shared_cleanup_stale_branch_caches.yml

@@ -1,36 +0,0 @@
-# https://github.com/actions/cache/blob/main/tips-and-workarounds.md#force-deletion-of-caches-overriding-default-cache-eviction-policy
-
-name: (Shared) Cleanup Stale Branch Caches
-on:
-  schedule:
-    # Every 6 hours
-    - cron: 0 */6 * * *
-  workflow_dispatch:
-
-permissions: {}
-
-jobs:
-  cleanup:
-    runs-on: ubuntu-latest
-    permissions:
-      # `actions:write` permission is required to delete caches
-      #   See also: https://docs.github.com/en/rest/actions/cache?apiVersion=2022-11-28#delete-a-github-actions-cache-for-a-repository-using-a-cache-id
-      actions: write
-      contents: read
-    steps:
-      - name: Cleanup
-        run: |
-          echo "Fetching list of cache keys"
-          cacheKeysForPR=$(gh cache list --limit 100 --json id,ref --jq '.[] | select(.ref != "refs/heads/main") | .id')
-
-          ## Setting this to not fail the workflow while deleting cache keys.
-          set +e
-          for cacheKey in $cacheKeysForPR
-          do
-              gh cache delete $cacheKey
-              echo "Deleting $cacheKey"
-          done
-          echo "Done"
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GH_REPO: ${{ github.repository }}

.github/workflows/shared_close_direct_sync_branch_prs.yml

@@ -1,43 +0,0 @@
-name: (Shared) Close Direct Sync Branch PRs
-
-on:
-  pull_request:
-    branches:
-      - 'builds/facebook-**'
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-
-jobs:
-  close_pr:
-    runs-on: ubuntu-latest
-    permissions:
-      # Used to create a review and close PRs
-      pull-requests: write
-      contents: write
-    steps:
-      - name: Close PR
-        uses: actions/github-script@v7
-        with:
-          script: |
-            const owner = context.repo.owner;
-            const repo = context.repo.repo;
-            const pullNumber = ${{ github.event.number }};
-
-            await github.rest.pulls.createReview({
-              owner,
-              repo,
-              pull_number: pullNumber,
-              body: 'Do not land changes to `${{ github.event.pull_request.base.ref }}`. Please re-open your PR targeting `main` instead.',
-              event: 'REQUEST_CHANGES'
-            });
-            await github.rest.pulls.update({
-              owner,
-              repo,
-              pull_number: pullNumber,
-              state: 'closed'
-            });

.github/workflows/shared_label_core_team_prs.yml

@@ -1,55 +0,0 @@
-name: (Shared) Label Core Team PRs
-
-on:
-  pull_request_target:
-    types: [opened]
-
-permissions: {}
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-
-jobs:
-  check_access:
-    runs-on: ubuntu-latest
-    outputs:
-      is_member_or_collaborator: ${{ steps.check_is_member_or_collaborator.outputs.is_member_or_collaborator }}
-    steps:
-      - run: echo ${{ github.event.pull_request.author_association }}
-      - name: Check is member or collaborator
-        id: check_is_member_or_collaborator
-        if: ${{ github.event.pull_request.author_association == 'MEMBER' || github.event.pull_request.author_association == 'COLLABORATOR' }}
-        run: echo "is_member_or_collaborator=true" >> "$GITHUB_OUTPUT"
-
-  check_maintainer:
-    if: ${{ needs.check_access.outputs.is_member_or_collaborator == 'true' || needs.check_access.outputs.is_member_or_collaborator == true }}
-    needs: [check_access]
-    uses: facebook/react/.github/workflows/shared_check_maintainer.yml@main
-    permissions:
-      # Used by check_maintainer
-      contents: read
-    with:
-      actor: ${{ github.event.pull_request.user.login }}
-
-  label:
-    if: ${{ needs.check_maintainer.outputs.is_core_team == 'true' }}
-    runs-on: ubuntu-latest
-    needs: check_maintainer
-    permissions:
-      # Used to add labels on issues
-      issues: write
-      # Used to add labels on PRs
-      pull-requests: write
-    steps:
-      - name: Label PR as React Core Team
-        uses: actions/github-script@v7
-        with:
-          script: |
-            github.rest.issues.addLabels({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              issue_number: ${{ github.event.number }},
-              labels: ['React Core Team']
-            });

.github/workflows/shared_lint.yml

@@ -1,110 +0,0 @@
-name: (Shared) Lint
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-
-permissions: {}
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.run_id }}
-  cancel-in-progress: true
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-  # https://github.com/actions/cache/blob/main/tips-and-workarounds.md#cache-segment-restore-timeout
-  SEGMENT_DOWNLOAD_TIMEOUT_MINS: 1
-
-jobs:
-  prettier:
-    name: Run prettier
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: shared-lint-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: yarn prettier-check
-
-  eslint:
-    name: Run eslint
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: shared-lint-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: node ./scripts/tasks/eslint
-
-  check_license:
-    name: Check license
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: shared-lint-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: ./scripts/ci/check_license.sh
-
-  test_print_warnings:
-    name: Test print warnings
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: yarn
-          cache-dependency-path: yarn.lock
-      - name: Restore cached node_modules
-        uses: actions/cache@v4
-        id: node_modules
-        with:
-          path: |
-            **/node_modules
-          key: shared-lint-node_modules-v6-${{ runner.arch }}-${{ runner.os }}-${{ hashFiles('**/yarn.lock') }}
-      - name: Ensure clean build directory
-        run: rm -rf build
-      - run: yarn install --frozen-lockfile
-        if: steps.node_modules.outputs.cache-hit != 'true'
-      - run: ./scripts/ci/test_print_warnings.sh

.github/workflows/shared_stale.yml

@@ -1,55 +0,0 @@
-# Configuration for stale action workflow - https://github.com/actions/stale
-name: (Shared) Manage stale issues and PRs
-on:
-  schedule:
-    # Run hourly
-    - cron: '0 * * * *'
-  workflow_dispatch:
-
-permissions:
-  # https://github.com/actions/stale/tree/v9/?tab=readme-ov-file#recommended-permissions
-  issues: write
-  pull-requests: write
-
-env:
-  TZ: /usr/share/zoneinfo/America/Los_Angeles
-
-jobs:
-  stale:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/stale@v9
-        with:
-          # --- Issues & PRs ---
-          # Number of days of inactivity before an issue or PR becomes stale
-          days-before-stale: 90
-          # Number of days of inactivity before a stale issue or PR is closed
-          days-before-close: 7
-          # API calls per run
-          operations-per-run: 100
-
-          # --- Issues ---
-          stale-issue-label: "Resolution: Stale"
-          # Comment to post when marking an issue as stale
-          stale-issue-message: >
-            This issue has been automatically marked as stale.
-            **If this issue is still affecting you, please leave any comment** (for example, "bump"), and we'll keep it open.
-            We are sorry that we haven't been able to prioritize it yet. If you have any new additional information, please include it with your comment!
-          # Comment to post when closing a stale issue
-          close-issue-message: >
-            Closing this issue after a prolonged period of inactivity. If this issue is still present in the latest release, please create a new issue with up-to-date information. Thank you!
-          # Issues with these labels will never be considered stale
-          exempt-issue-labels: "Partner,React Core Team,Resolution: Backlog,Type: Bug,Type: Discussion,Type: Needs Investigation,Type: Regression,Type: Feature Request,Type: Enhancement"
-
-          # --- PRs ---
-          stale-pr-label: "Resolution: Stale"
-          # Comment to post when marking a pull request as stale
-          stale-pr-message: >
-            This pull request has been automatically marked as stale.
-            **If this pull request is still relevant, please leave any comment** (for example, "bump"), and we'll keep it open.
-            We are sorry that we haven't been able to prioritize reviewing it yet. Your contribution is very much appreciated.
-          # Comment to post when closing a stale pull request
-          close-pr-message: >
-            Closing this pull request after a prolonged period of inactivity. If this issue is still present in the latest release, please ask for this pull request to be reopened. Thank you!
-          # PRs with these labels will never be considered stale
-          exempt-pr-labels: "Partner,React Core Team,Resolution: Backlog,Type: Bug,Type: Discussion,Type: Needs Investigation,Type: Regression,Type: Feature Request,Type: Enhancement"

.gitignore

@@ -1,7 +1,6 @@
 .DS_STORE
 node_modules
 scripts/flow/*/.flowconfig
-.flowconfig
 *~
 *.pyc
 .grunt
@@ -23,19 +22,3 @@ chrome-user-data
 .vscode
 *.swp
 *.swo
-/tmp
-
-packages/react-devtools-core/dist
-packages/react-devtools-extensions/chrome/build
-packages/react-devtools-extensions/chrome/*.crx
-packages/react-devtools-extensions/chrome/*.pem
-packages/react-devtools-extensions/firefox/build
-packages/react-devtools-extensions/firefox/*.xpi
-packages/react-devtools-extensions/firefox/*.pem
-packages/react-devtools-extensions/shared/build
-packages/react-devtools-extensions/.tempUserDataDir
-packages/react-devtools-fusebox/dist
-packages/react-devtools-inline/dist
-packages/react-devtools-shell/dist
-packages/react-devtools-timeline/dist
-

.mailmap

@@ -88,7 +88,6 @@ Kevin Coughlin <kevintcoughlin@gmail.com> <kevincoughlin@tumblr.com>
 Krystian Karczewski <karcz.k@gmail.com>
 Kunal Mehta <k.mehta@berkeley.edu> <kunalm@fb.com>
 Laurence Rowe <l@lrowe.co.uk> <laurence@lrowe.co.uk>
-Lea Rosema <terabaud@gmail.com>
 Marcin K. <katzoo@github.mail>
 Mark Anderson <undernewmanagement@users.noreply.github.com>
 Mark Funk <mfunk86@gmail.com> <mark@boomtownroi.com>
@@ -127,8 +126,6 @@ Rainer Oviir <roviir@gmail.com> <raineroviir@rainers-MacBook-Pro.local>
 Ray <ray@tomo.im>
 Richard Feldman <richard.t.feldman@gmail.com> <richard@noredink.com>
 Richard Livesey <Livesey7@hotmail.co.uk>
-Rick Hanlon <rickhanlonii@gmail.com>
-Rick Hanlon <rickhanlonii@gmail.com> <rickhanlonii@fb.com>
 Rob Arnold <robarnold@cs.cmu.edu>
 Robert Binna <rbinna@gmail.com> <speedskater@users.noreply.github.com>
 Robin Frischmann <robin@rofrischmann.de>
@@ -147,7 +144,6 @@ Steven Luscher <react@steveluscher.com> <github@steveluscher.com>
 Steven Luscher <react@steveluscher.com> <steveluscher@fb.com>
 Steven Luscher <react@steveluscher.com> <steveluscher@instagram.com>
 Steven Luscher <react@steveluscher.com> <steveluscher@users.noreply.github.com>
-Seth Webster <sethwebster@gmail.com> <sethwebster@fb.com>
 Stoyan Stefanov <ssttoo@ymail.com>
 Tengfei Guo <terryr3rd@yeah.net> <tfguo369@gmail.com>
 Thomas Aylott <oblivious@subtlegradient.com> <aylott@fb.com>

.nvmrc

@@ -1 +1 @@
-v20.19.0
+v8.4.0

.prettierignore

@@ -1,41 +0,0 @@
-# react runtime
-build
-
-packages/react-devtools-core/dist
-packages/react-devtools-extensions/chrome/build
-packages/react-devtools-extensions/firefox/build
-packages/react-devtools-extensions/edge/build
-packages/react-devtools-extensions/shared/build
-packages/react-devtools-extensions/src/ErrorTesterCompiled.js
-packages/react-devtools-fusebox/dist
-packages/react-devtools-inline/dist
-packages/react-devtools-shared/src/hooks/__tests__/__source__/__compiled__/
-packages/react-devtools-shared/src/hooks/__tests__/__source__/__untransformed__/
-packages/react-devtools-shell/dist
-packages/react-devtools-timeline/dist
-packages/react-devtools-timeline/static
-
-# react compiler
-compiler/**/dist
-compiler/**/__tests__/fixtures/**/*.expect.md
-compiler/**/.next
-
-# contains invalid graphql`...` which results in a promise rejection error from `yarn prettier-all`.
-compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/error.todo-kitchensink.js
-
-compiler/crates
-compiler/target
-compiler/apps/playground/public
-
-compiler/**/LICENSE
-compiler/*.md*
-compiler/*.json
-compiler/*.css
-compiler/*.webmanifest
-compiler/*.map
-compiler/*.sh
-compiler/*.txt
-compiler/*.ico
-compiler/*.svg
-compiler/*.lock
-compiler/*.toml

.prettierrc.js

@@ -5,30 +5,17 @@ const {esNextPaths} = require('./scripts/shared/pathsByLanguageVersion');
 module.exports = {
   bracketSpacing: false,
   singleQuote: true,
-  bracketSameLine: true,
+  jsxBracketSameLine: true,
   trailingComma: 'es5',
   printWidth: 80,
-  parser: 'flow',
-  arrowParens: 'avoid',
+  parser: 'babylon',
+
   overrides: [
-    {
-      files: ['*.code-workspace'],
-      options: {
-        parser: 'json-stringify',
-      },
-    },
     {
       files: esNextPaths,
       options: {
         trailingComma: 'all',
       },
     },
-    {
-      files: ['*.ts', '*.tsx'],
-      options: {
-        trailingComma: 'all',
-        parser: 'typescript',
-      },
-    },
   ],
 };

.watchmanconfig

@@ -1 +0,0 @@
-{}

CHANGELOG.md

@@ -1,878 +1,10 @@
-## 19.2.1 (Dec 3, 2025)
-
-### React Server Components
-
-- Bring React Server Component fixes to Server Actions (@sebmarkbage [#35277](https://github.com/facebook/react/pull/35277))
-
-## 19.2.0 (October 1st, 2025)
-
-Below is a list of all new features, APIs, and bug fixes.
-
-Read the [React 19.2 release post](https://react.dev/blog/2025/10/01/react-19-2) for more information.
-
-### New React Features
-
-- [`<Activity>`](https://react.dev/reference/react/Activity): A new API to hide and restore the UI and internal state of its children.
-- [`useEffectEvent`](https://react.dev/reference/react/useEffectEvent) is a React Hook that lets you extract non-reactive logic into an [Effect Event](https://react.dev/learn/separating-events-from-effects#declaring-an-effect-event).
-- [`cacheSignal`](https://react.dev/reference/react/cacheSignal) (for RSCs) lets your know when the `cache()` lifetime is over.
-- [React Performance tracks](https://react.dev/reference/dev-tools/react-performance-tracks) appear on the Performance panel’s timeline in your browser developer tools
-
-### New React DOM Features
-
-- Added resume APIs for partial pre-rendering with Web Streams:
-  - [`resume`](https://react.dev/reference/react-dom/server/resume): to resume a prerender to a stream.
-  - [`resumeAndPrerender`](https://react.dev/reference/react-dom/static/resumeAndPrerender): to resume a prerender to HTML.
-- Added resume APIs for partial pre-rendering with Node Streams:
-  - [`resumeToPipeableStream`](https://react.dev/reference/react-dom/server/resumeToPipeableStream): to resume a prerender to a stream.
-  - [`resumeAndPrerenderToNodeStream`](https://react.dev/reference/react-dom/static/resumeAndPrerenderToNodeStream): to resume a prerender to HTML.
-- Updated [`prerender`](https://react.dev/reference/react-dom/static/prerender) APIs to return a `postponed` state that can be passed to the `resume` APIs.
-
-### Notable changes
-
-- React DOM now batches suspense boundary reveals, matching the behavior of client side rendering. This change is especially noticeable when animating the reveal of Suspense boundaries e.g. with the upcoming `<ViewTransition>` Component. React will batch as much reveals as possible before the first paint while trying to hit popular first-contentful paint metrics.
-- Add Node Web Streams (`prerender`, `renderToReadableStream`) to server-side-rendering APIs for Node.js
-- Use underscore instead of `:` IDs generated by useId
-
-### All Changes
-
-#### React
-
-- `<Activity />` was developed over many years, starting before `ClassComponent.setState` (@acdlite @sebmarkbage and many others)
-- Stringify context as "SomeContext" instead of "SomeContext.Provider" (@kassens [#33507](https://github.com/facebook/react/pull/33507))
-- Include stack of cause of React instrumentation errors with `%o` placeholder (@eps1lon [#34198](https://github.com/facebook/react/pull/34198))
-- Fix infinite `useDeferredValue` loop in popstate event (@acdlite [#32821](https://github.com/facebook/react/pull/32821))
-- Fix a bug when an initial value was passed to `useDeferredValue` (@acdlite [#34376](https://github.com/facebook/react/pull/34376))
-- Fix a crash when submitting forms with Client Actions (@sebmarkbage [#33055](https://github.com/facebook/react/pull/33055))
-- Hide/unhide the content of dehydrated suspense boundaries if they resuspend (@sebmarkbage [#32900](https://github.com/facebook/react/pull/32900))
-- Avoid stack overflow on wide trees during Hot Reload (@sophiebits [#34145](https://github.com/facebook/react/pull/34145))
-- Improve Owner and Component stacks in various places (@sebmarkbage, @eps1lon: [#33629](https://github.com/facebook/react/pull/33629), [#33724](https://github.com/facebook/react/pull/33724), [#32735](https://github.com/facebook/react/pull/32735), [#33723](https://github.com/facebook/react/pull/33723))
-- Add `cacheSignal` (@sebmarkbage [#33557](https://github.com/facebook/react/pull/33557))
-
-#### React DOM
-
-- Block on Suspensey Fonts during reveal of server-side-rendered content (@sebmarkbage [#33342](https://github.com/facebook/react/pull/33342))
-- Use underscore instead of `:` for IDs generated by `useId` (@sebmarkbage, @eps1lon: [#32001](https://github.com/facebook/react/pull/32001), [https://github.com/facebook/react/pull/33342](https://github.com/facebook/react/pull/33342)[#33099](https://github.com/facebook/react/pull/33099), [#33422](https://github.com/facebook/react/pull/33422))
-- Stop warning when ARIA 1.3 attributes are used (@Abdul-Omira [#34264](https://github.com/facebook/react/pull/34264))
-- Allow `nonce` to be used on hoistable styles (@Andarist [#32461](https://github.com/facebook/react/pull/32461))
-- Warn for using a React owned node as a Container if it also has text content (@sebmarkbage [#32774](https://github.com/facebook/react/pull/32774))
-- s/HTML/text for for error messages if text hydration mismatches (@rickhanlonii [#32763](https://github.com/facebook/react/pull/32763))
-- Fix a bug with `React.use` inside `React.lazy`\-ed Component (@hi-ogawa [#33941](https://github.com/facebook/react/pull/33941))
-- Enable the `progressiveChunkSize` option for server-side-rendering APIs (@sebmarkbage [#33027](https://github.com/facebook/react/pull/33027))
-- Fix a bug with deeply nested Suspense inside Suspense fallback when server-side-rendering (@gnoff [#33467](https://github.com/facebook/react/pull/33467))
-- Avoid hanging when suspending after aborting while rendering (@gnoff [#34192](https://github.com/facebook/react/pull/34192))
-- Add Node Web Streams to server-side-rendering APIs for Node.js (@sebmarkbage [#33475](https://github.com/facebook/react/pull/33475))
-
-#### React Server Components
-
-- Preload `<img>` and `<link>` using hints before they're rendered (@sebmarkbage [#34604](https://github.com/facebook/react/pull/34604))
-- Log error if production elements are rendered during development (@eps1lon [#34189](https://github.com/facebook/react/pull/34189))
-- Fix a bug when returning a Temporary reference (e.g. a Client Reference) from Server Functions (@sebmarkbage [#34084](https://github.com/facebook/react/pull/34084), @denk0403 [#33761](https://github.com/facebook/react/pull/33761))
-- Pass line/column to `filterStackFrame` (@eps1lon [#33707](https://github.com/facebook/react/pull/33707))
-- Support Async Modules in Turbopack Server References (@lubieowoce [#34531](https://github.com/facebook/react/pull/34531))
-- Add support for .mjs file extension in Webpack (@jennyscript [#33028](https://github.com/facebook/react/pull/33028))
-- Fix a wrong missing key warning (@unstubbable [#34350](https://github.com/facebook/react/pull/34350))
-- Make console log resolve in predictable order (@sebmarkbage [#33665](https://github.com/facebook/react/pull/33665))
-
-#### React Reconciler
-
-- [createContainer](https://github.com/facebook/react/blob/v19.2.0/packages/react-reconciler/src/ReactFiberReconciler.js#L255-L261) and [createHydrationContainer](https://github.com/facebook/react/blob/v19.2.0/packages/react-reconciler/src/ReactFiberReconciler.js#L305-L312) had their parameter order adjusted after `on*` handlers to account for upcoming experimental APIs
-
-## 19.1.2 (Dec 3, 2025)
-
-### React Server Components
-
-- Bring React Server Component fixes to Server Actions (@sebmarkbage [#35277](https://github.com/facebook/react/pull/35277))
-
-## 19.1.1 (July 28, 2025)
-
-### React
-* Fixed Owner Stacks to work with ES2015 function.name semantics ([#33680](https://github.com/facebook/react/pull/33680) by @hoxyq)
-
-## 19.1.0 (March 28, 2025)
-
-### Owner Stack
-
-An Owner Stack is a string representing the components that are directly responsible for rendering a particular component. You can log Owner Stacks when debugging or use Owner Stacks to enhance error overlays or other development tools. Owner Stacks are only available in development builds. Component Stacks in production are unchanged.
-
-* An Owner Stack is a development-only stack trace that helps identify which components are responsible for rendering a particular component. An Owner Stack is distinct from a Component Stacks, which shows the hierarchy of components leading to an error.
-* The [captureOwnerStack API](https://react.dev/reference/react/captureOwnerStack) is only available in development mode and returns a Owner Stack, if available. The API can be used to enhance error overlays or log component relationships when debugging. [#29923](https://github.com/facebook/react/pull/29923), [#32353](https://github.com/facebook/react/pull/32353), [#30306](https://github.com/facebook/react/pull/30306),
-[#32538](https://github.com/facebook/react/pull/32538), [#32529](https://github.com/facebook/react/pull/32529), [#32538](https://github.com/facebook/react/pull/32538)
-
-### React
-* Enhanced support for Suspense boundaries to be used anywhere, including the client, server, and during hydration. [#32069](https://github.com/facebook/react/pull/32069), [#32163](https://github.com/facebook/react/pull/32163), [#32224](https://github.com/facebook/react/pull/32224), [#32252](https://github.com/facebook/react/pull/32252)
-* Reduced unnecessary client rendering through improved hydration scheduling [#31751](https://github.com/facebook/react/pull/31751)
-* Increased priority of client rendered Suspense boundaries [#31776](https://github.com/facebook/react/pull/31776)
-* Fixed frozen fallback states by rendering unfinished Suspense boundaries on the client. [#31620](https://github.com/facebook/react/pull/31620)
-* Reduced garbage collection pressure by improving Suspense boundary retries. [#31667](https://github.com/facebook/react/pull/31667)
-* Fixed erroneous “Waiting for Paint” log when the passive effect phase was not delayed [#31526](https://github.com/facebook/react/pull/31526)
-* Fixed a regression causing key warnings for flattened positional children in development mode. [#32117](https://github.com/facebook/react/pull/32117)
-* Updated `useId` to use valid CSS selectors, changing format from `:r123:` to `«r123»`. [#32001](https://github.com/facebook/react/pull/32001)
-* Added a dev-only warning for null/undefined created in useEffect, useInsertionEffect, and useLayoutEffect. [#32355](https://github.com/facebook/react/pull/32355)
-* Fixed a bug where dev-only methods were exported in production builds. React.act is no longer available in production builds. [#32200](https://github.com/facebook/react/pull/32200)
-* Improved consistency across prod and dev to improve compatibility with Google Closure Compiler and bindings [#31808](https://github.com/facebook/react/pull/31808)
-* Improve passive effect scheduling for consistent task yielding. [#31785](https://github.com/facebook/react/pull/31785)
-* Fixed asserts in React Native when passChildrenWhenCloningPersistedNodes is enabled for OffscreenComponent rendering. [#32528](https://github.com/facebook/react/pull/32528)
-* Fixed component name resolution for Portal [#32640](https://github.com/facebook/react/pull/32640)
-* Added support for beforetoggle and toggle events on the dialog element. [#32479](https://github.com/facebook/react/pull/32479)
-
-### React DOM
-* Fixed double warning when the `href` attribute is an empty string [#31783](https://github.com/facebook/react/pull/31783)
- * Fixed an edge case where `getHoistableRoot()` didn’t work properly when the container was a Document [#32321](https://github.com/facebook/react/pull/32321)
-* Removed support for using HTML comments (e.g. `<!-- -->`) as a DOM container. [#32250](https://github.com/facebook/react/pull/32250)
-* Added support for `<script>` and `<template>` tags to be nested within `<select>` tags. [#31837](https://github.com/facebook/react/pull/31837)
-* Fixed responsive images to be preloaded as HTML instead of headers [#32445](https://github.com/facebook/react/pull/32445)
-
-### use-sync-external-store
-* Added `exports` field to `package.json` for `use-sync-external-store` to support various entrypoints. [#25231](https://github.com/facebook/react/pull/25231)
-
-### React Server Components
-* Added `unstable_prerender`, a new experimental API for prerendering React Server Components on the server [#31724](https://github.com/facebook/react/pull/31724)
-* Fixed an issue where streams would hang when receiving new chunks after a global error [#31840](https://github.com/facebook/react/pull/31840), [#31851](https://github.com/facebook/react/pull/31851)
-* Fixed an issue where pending chunks were counted twice. [#31833](https://github.com/facebook/react/pull/31833)
-* Added support for streaming in edge environments [#31852](https://github.com/facebook/react/pull/31852)
-* Added support for sending custom error names from a server so that they are available in the client for console replaying. [#32116](https://github.com/facebook/react/pull/32116)
-* Updated the server component wire format to remove IDs for hints and console.log because they have no return value [#31671](https://github.com/facebook/react/pull/31671)
-* Exposed `registerServerReference` in client builds to handle server references in different environments. [#32534](https://github.com/facebook/react/pull/32534)
-* Added react-server-dom-parcel package which integrates Server Components with the [Parcel bundler](https://parceljs.org/) [#31725](https://github.com/facebook/react/pull/31725), [#32132](https://github.com/facebook/react/pull/32132), [#31799](https://github.com/facebook/react/pull/31799), [#32294](https://github.com/facebook/react/pull/32294), [#31741](https://github.com/facebook/react/pull/31741)
-
-## 19.0.1 (Dec 3, 2025)
-
-### React Server Components
-
-- Bring React Server Component fixes to Server Actions (@sebmarkbage [#35277](https://github.com/facebook/react/pull/35277))
-
-## 19.0.0 (December 5, 2024)
-
-Below is a list of all new features, APIs, deprecations, and breaking changes. Read [React 19 release post](https://react.dev/blog/2024/04/25/react-19) and [React 19 upgrade guide](https://react.dev/blog/2024/04/25/react-19-upgrade-guide) for more information.
-
-> Note: To help make the upgrade to React 19 easier, we’ve published a react@18.3 release that is identical to 18.2 but adds warnings for deprecated APIs and other changes that are needed for React 19. We recommend upgrading to React 18.3.1 first to help identify any issues before upgrading to React 19.
-
-### New Features
-
-#### React
-
-* Actions: `startTransition` can now accept async functions. Functions passed to `startTransition` are called “Actions”. A given Transition can include one or more Actions which update state in the background and update the UI with one commit. In addition to updating state, Actions can now perform side effects including async requests, and the Action will wait for the work to finish before finishing the Transition. This feature allows Transitions to include side effects like `fetch()` in the pending state, and provides support for error handling, and optimistic updates.  
-* `useActionState`: is a new hook to order Actions inside of a Transition with access to the state of the action, and the pending state. It accepts a reducer that can call Actions, and the initial state used for first render. It also accepts an optional string that is used if the action is passed to a form `action` prop to support progressive enhancement in forms.  
-* `useOptimistic`: is a new hook to update state while a Transition is in progress. It returns the state, and a set function that can be called inside a transition to “optimistically” update the state to expected final value immediately while the Transition completes in the background. When the transition finishes, the state is updated to the new value.  
-* `use`: is a new API that allows reading resources in render. In React 19, `use` accepts a promise or Context. If provided a promise, `use` will suspend until a value is resolved. `use` can only be used in render but can be called conditionally.  
-* `ref` as a prop: Refs can now be used as props, removing the need for `forwardRef`.  
-* **Suspense sibling pre-warming**: When a component suspends, React will immediately commit the fallback of the nearest Suspense boundary, without waiting for the entire sibling tree to render. After the fallback commits, React will schedule another render for the suspended siblings to “pre-warm” lazy requests.
-
-#### React DOM Client
-
-* `<form> action` prop: Form Actions allow you to manage forms automatically and integrate with `useFormStatus`. When a `<form> action` succeeds, React will automatically reset the form for uncontrolled components. The form can be reset manually with the new `requestFormReset` API.  
-* `<button> and <input> formAction` prop: Actions can be passed to the `formAction` prop to configure form submission behavior. This allows using different Actions depending on the input.  
-* `useFormStatus`: is a new hook that provides the status of the parent `<form> action`, as if the form was a Context provider. The hook returns the values: `pending`, `data`, `method`, and `action`.  
-* Support for Document Metadata: We’ve added support for rendering document metadata tags in components natively. React will automatically hoist them into the `<head>` section of the document.  
-* Support for Stylesheets: React 19 will ensure stylesheets are inserted into the `<head>` on the client before revealing the content of a Suspense boundary that depends on that stylesheet.  
-* Support for async scripts: Async scripts can be rendered anywhere in the component tree and React will handle ordering and deduplication.  
-* Support for preloading resources: React 19 ships with `preinit`, `preload`, `prefetchDNS`, and `preconnect` APIs to optimize initial page loads by moving discovery of additional resources like fonts out of stylesheet loading. They can also be used to prefetch resources used by an anticipated navigation.
-
-#### React DOM Server
-
-* Added `prerender` and `prerenderToNodeStream` APIs for static site generation. They are designed to work with streaming environments like Node.js Streams and Web Streams. Unlike `renderToString`, they wait for data to load for HTML generation.
-
-#### React Server Components
-
-* RSC features such as directives, server components, and server functions are now stable. This means libraries that ship with Server Components can now target React 19 as a peer dependency with a react-server export condition for use in frameworks that support the Full-stack React Architecture. The underlying APIs used to implement a React Server Components bundler or framework do not follow semver and may break between minors in React 19.x. See [docs](https://19.react.dev/reference/rsc/server-components) for how to support React Server Components.
-
-### Deprecations
-
-* Deprecated: `element.ref` access: React 19 supports ref as a prop, so we’re deprecating `element.ref` in favor of `element.props.ref`. Accessing will result in a warning.  
-* `react-test-renderer`: In React 19, react-test-renderer logs a deprecation warning and has switched to concurrent rendering for web usage. We recommend migrating your tests to  [@testing-library/react](https://testing-library.com/docs/react-testing-library/intro/) or [@testing-library/react-native](https://testing-library.com/docs/react-native-testing-library/intro)
-
-### Breaking Changes
-
-React 19 brings in a number of breaking changes, including the removals of long-deprecated APIs. We recommend first upgrading to `18.3.1`, where we've added additional deprecation warnings. Check out the [upgrade guide](https://19.react.dev/blog/2024/04/25/react-19-upgrade-guide) for more details and guidance on codemodding.
-
-### React
-
-* New JSX Transform is now required: We introduced [a new JSX transform](https://legacy.reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html) in 2020 to improve bundle size and use JSX without importing React. In React 19, we’re adding additional improvements like using ref as a prop and JSX speed improvements that require the new transform.  
-* Errors in render are not re-thrown: Errors that are not caught by an Error Boundary are now reported to window.reportError. Errors that are caught by an Error Boundary are reported to console.error. We’ve introduced `onUncaughtError` and `onCaughtError` methods to `createRoot` and `hydrateRoot` to customize this error handling.  
-* Removed: `propTypes`: Using `propTypes` will now be silently ignored. If required, we recommend migrating to TypeScript or another type-checking solution.  
-* Removed: `defaultProps` for functions: ES6 default parameters can be used in place. Class components continue to support `defaultProps` since there is no ES6 alternative.  
-* Removed: `contextTypes` and `getChildContext`: Legacy Context for class components has been removed in favor of the `contextType` API.  
-* Removed: string refs: Any usage of string refs need to be migrated to ref callbacks.   
-* Removed: Module pattern factories: A rarely used pattern that can be migrated to regular functions.  
-* Removed: `React.createFactory`: Now that JSX is broadly supported, all `createFactory` usage can be migrated to JSX components.  
-* Removed: `react-test-renderer/shallow`: This has been a re-export of [react-shallow-renderer](https://github.com/enzymejs/react-shallow-renderer) since React 18\. If needed, you can continue to use the third-party package directly. We recommend using [@testing-library/react](https://testing-library.com/docs/react-testing-library/intro/) or [@testing-library/react-native](https://testing-library.com/docs/react-native-testing-library/intro) instead.
-
-#### React DOM
-
-* Removed: `react-dom/test-utils`: We’ve moved `act` from `react-dom/test-utils` to react. All other utilities have been removed.   
-* Removed: `ReactDOM`.`render`, `ReactDOM`.`hydrate`: These have been removed in favor of the concurrent equivalents: `ReactDOM`.`createRoot` and `ReactDOM.hydrateRoot`.  
-* Removed: `unmountComponentAtNode`: Removed in favor of `root.unmount()`.  
-* Removed: `ReactDOM`.`findDOMNode`: You can replace `ReactDOM`.`findDOMNode` with DOM Refs.
-
-### Notable Changes
-
-#### React
-
-* `<Context>` as a provider: You can now render `<Context>` as a provider instead of `<Context.Provider>`.  
-* Cleanup functions for refs: When the component unmounts, React will call the cleanup function returned from the ref callback.  
-* `useDeferredValue` initial value argument: When provided, `useDeferredValue` will return the initial value for the initial render of a component, then schedule a re-render in the background with the `deferredValue` returned.  
-* Support for Custom Elements: React 19 now passes all tests on [Custom Elements Everywhere](https://custom-elements-everywhere.com/).  
-* StrictMode changes: `useMemo` and `useCallback` will now reuse the memoized results from the first render, during the second render. Additionally, StrictMode will now double-invoke ref callback functions on initial mount.  
-* UMD builds removed: To load React 19 with a script tag, we recommend using an ESM-based CDN such as [esm.sh](http://esm.sh).
-
-#### React DOM
-
-* Diffs for hydration errors: In the case of a mismatch, React 19 logs a single error with a diff of the mismatched content.  
-* Compatibility with third-party scripts and extensions: React will now force a client re-render to fix up any mismatched content caused by elements inserted by third-party JS. 
-
-### TypeScript Changes
-
-The most common changes can be codemodded with `npx types-react-codemod@latest preset-19 ./path-to-your-react-ts-files`.
-
-* Removed deprecated TypeScript types:   
-  * `ReactChild` (replacement: `React.ReactElement | number | string)`  
-  * `ReactFragment` (replacement: `Iterable<React.ReactNode>`)  
-  * `ReactNodeArray` (replacement: `ReadonlyArray<React.ReactNode>`)  
-  * `ReactText` (replacement: `number | string`)  
-  * `VoidFunctionComponent` (replacement: `FunctionComponent`)  
-  * `VFC` (replacement: `FC`)  
-  * Moved to `prop-types`: `Requireable`, `ValidationMap`, `Validator`, `WeakValidationMap`  
-  * Moved to `create-react-class`: `ClassicComponentClass`, `ClassicComponent`, `ClassicElement`, `ComponentSpec`, `Mixin`, `ReactChildren`, `ReactHTML`, `ReactSVG`, `SFCFactory`  
-* Disallow implicit return in refs: refs can now accept cleanup functions. When you return something else, we can’t tell if you intentionally returned something not meant to clean up or returned the wrong value. Implicit returns of anything but functions will now error.   
-* Require initial argument to `useRef`: The initial argument is now required to match `useState`, `createContext` etc  
-* Refs are mutable by default: Ref objects returned from `useRef()` are now always mutable instead of sometimes being immutable. This feature was too confusing for users and conflicted with legit cases where refs were managed by React and manually written to.  
-* Strict `ReactElement` typing: The props of React elements now default to `unknown` instead of `any` if the element is typed as `ReactElement`  
-* JSX namespace in TypeScript: The global `JSX` namespace is removed to improve interoperability with other libraries using JSX. Instead, the JSX namespace is available from the React package: `import { JSX } from 'react'`  
-* Better `useReducer` typings: Most `useReducer` usage should not require explicit type arguments.  
-  For example,  
-  ```diff
-  -useReducer<React.Reducer<State, Action>>(reducer)
-  +useReducer(reducer)
-  ```
-  or
-  ```diff
-  -useReducer<React.Reducer<State, Action>>(reducer)
-  +useReducer<State, Action>(reducer)
-  ```
-
-### All Changes
-
-#### React
-
-* Add support for async Actions ([\#26621](https://github.com/facebook/react/pull/26621), [\#26726](https://github.com/facebook/react/pull/26726), [\#28078](https://github.com/facebook/react/pull/28078), [\#28097](https://github.com/facebook/react/pull/28097), [\#29226](https://github.com/facebook/react/pull/29226), [\#29618](https://github.com/facebook/react/pull/29618), [\#29670](https://github.com/facebook/react/pull/29670), [\#26716](https://github.com/facebook/react/pull/26716) by [@acdlite](https://github.com/acdlite) and [@sebmarkbage](https://github.com/sebmarkbage))  
-* Add `useActionState()` hook to update state based on the result of a Form Action ([\#27270](https://github.com/facebook/react/pull/27270), [\#27278](https://github.com/facebook/react/pull/27278), [\#27309](https://github.com/facebook/react/pull/27309), [\#27302](https://github.com/facebook/react/pull/27302), [\#27307](https://github.com/facebook/react/pull/27307), [\#27366](https://github.com/facebook/react/pull/27366), [\#27370](https://github.com/facebook/react/pull/27370), [\#27321](https://github.com/facebook/react/pull/27321), [\#27374](https://github.com/facebook/react/pull/27374), [\#27372](https://github.com/facebook/react/pull/27372), [\#27397](https://github.com/facebook/react/pull/27397), [\#27399](https://github.com/facebook/react/pull/27399), [\#27460](https://github.com/facebook/react/pull/27460), [\#28557](https://github.com/facebook/react/pull/28557), [\#27570](https://github.com/facebook/react/pull/27570), [\#27571](https://github.com/facebook/react/pull/27571), [\#28631](https://github.com/facebook/react/pull/28631), [\#28788](https://github.com/facebook/react/pull/28788), [\#29694](https://github.com/facebook/react/pull/29694), [\#29695](https://github.com/facebook/react/pull/29695), [\#29694](https://github.com/facebook/react/pull/29694), [\#29665](https://github.com/facebook/react/pull/29665), [\#28232](https://github.com/facebook/react/pull/28232), [\#28319](https://github.com/facebook/react/pull/28319) by [@acdlite](https://github.com/acdlite), [@eps1lon](https://github.com/eps1lon), and [@rickhanlonii](https://github.com/rickhanlonii))  
-* Add `use()` API to read resources in render ([\#25084](https://github.com/facebook/react/pull/25084), [\#25202](https://github.com/facebook/react/pull/25202), [\#25207](https://github.com/facebook/react/pull/25207), [\#25214](https://github.com/facebook/react/pull/25214), [\#25226](https://github.com/facebook/react/pull/25226), [\#25247](https://github.com/facebook/react/pull/25247), [\#25539](https://github.com/facebook/react/pull/25539), [\#25538](https://github.com/facebook/react/pull/25538), [\#25537](https://github.com/facebook/react/pull/25537), [\#25543](https://github.com/facebook/react/pull/25543), [\#25561](https://github.com/facebook/react/pull/25561), [\#25620](https://github.com/facebook/react/pull/25620), [\#25615](https://github.com/facebook/react/pull/25615), [\#25922](https://github.com/facebook/react/pull/25922), [\#25641](https://github.com/facebook/react/pull/25641), [\#25634](https://github.com/facebook/react/pull/25634), [\#26232](https://github.com/facebook/react/pull/26232), [\#26536](https://github.com/facebook/react/pull/26535), [\#26739](https://github.com/facebook/react/pull/26739), [\#28233](https://github.com/facebook/react/pull/28233) by [@acdlite](https://github.com/acdlite), [@MofeiZ](https://github.com/mofeiZ), [@sebmarkbage](https://github.com/sebmarkbage), [@sophiebits](https://github.com/sophiebits), [@eps1lon](https://github.com/eps1lon), and [@hansottowirtz](https://github.com/hansottowirtz))  
-* Add `useOptimistic()` hook to display mutated state optimistically during an async mutation ([\#26740](https://github.com/facebook/react/pull/26740), [\#26772](https://github.com/facebook/react/pull/26772), [\#27277](https://github.com/facebook/react/pull/27277), [\#27453](https://github.com/facebook/react/pull/27453), [\#27454](https://github.com/facebook/react/pull/27454), [\#27936](https://github.com/facebook/react/pull/27936) by [@acdlite](https://github.com/acdlite))  
-* Added an `initialValue` argument to `useDeferredValue()` hook ([\#27500](https://github.com/facebook/react/pull/27500), [\#27509](https://github.com/facebook/react/pull/27509), [\#27512](https://github.com/facebook/react/pull/27512), [\#27888](https://github.com/facebook/react/pull/27888), [\#27550](https://github.com/facebook/react/pull/27550) by [@acdlite](https://github.com/acdlite))  
-* Support refs as props, warn on `element.ref` access ([\#28348](https://github.com/facebook/react/pull/28348), [\#28464](https://github.com/facebook/react/pull/28464), [\#28731](https://github.com/facebook/react/pull/28731) by [@acdlite](https://github.com/acdlite))  
-* Support Custom Elements ([\#22184](https://github.com/facebook/react/pull/22184), [\#26524](https://github.com/facebook/react/pull/26524), [\#26523](https://github.com/facebook/react/pull/26523), [\#27511](https://github.com/facebook/react/pull/27511), [\#24541](https://github.com/facebook/react/pull/24541) by [@josepharhar](https://github.com/josepharhar), [@sebmarkbage](https://github.com/sebmarkbage), [@gnoff](https://github.com/gnoff) and [@eps1lon](https://github.com/eps1lon))  
-* Add ref cleanup function ([\#25686](https://github.com/facebook/react/pull/25686), [\#28883](https://github.com/facebook/react/pull/28883), [\#28910](https://github.com/facebook/react/pull/28910)  by [@sammy-SC](https://github.com/sammy-SC), [@jackpope](https://github.com/jackpope), and [@kassens](https://github.com/kassens))  
-* Sibling pre-rendering replaced by sibling pre-warming ([\#26380](https://github.com/facebook/react/pull/26380), [\#26549](https://github.com/facebook/react/pull/26549), [\#30761](https://github.com/facebook/react/pull/30761), [\#30800](https://github.com/facebook/react/pull/30800), [\#30762](https://github.com/facebook/react/pull/30762), [\#30879](https://github.com/facebook/react/pull/30879), [\#30934](https://github.com/facebook/react/pull/30934), [\#30952](https://github.com/facebook/react/pull/30952), [\#31056](https://github.com/facebook/react/pull/31056), [\#31452](https://github.com/facebook/react/pull/31452) by [@sammy-SC](https://github.com/sammy-SC), [@acdlite](https://github.com/acdlite), [@gnoff](https://github.com/gnoff), [@jackpope](https://github.com/jackpope), [@rickhanlonii](https://github.com/rickhanlonii))  
-* Don’t rethrow errors at the root ([\#28627](https://github.com/facebook/react/pull/28627), [\#28641](https://github.com/facebook/react/pull/28641) by [@sebmarkbage](https://github.com/sebmarkbage))  
-* Batch sync discrete, continuous, and default lanes ([\#25700](https://github.com/facebook/react/pull/25700) by [@tyao1](https://github.com/tyao1))  
-* Switch `<Context>` to mean `<Context.Provider>` ([\#28226](https://github.com/facebook/react/pull/28226) by [@gaearon](https://github.com/gaearon))  
-* Changes to *StrictMode*  
-  * Handle `info`, `group`, and `groupCollapsed` in *StrictMode* logging ([\#25172](https://github.com/facebook/react/pull/25172) by [@timneutkens](https://github.com/timneutkens))  
-  * Refs are now attached/detached/attached in *StrictMode* ([\#25049](https://github.com/facebook/react/pull/25049) by [@sammy-SC](https://github.com/sammy-SC))  
-  * Fix `useSyncExternalStore()` hydration in *StrictMode* ([\#26791](https://github.com/facebook/react/pull/26791) by [@sophiebits](https://github.com/sophiebits))  
-  * Always trigger `componentWillUnmount()` in *StrictMode* ([\#26842](https://github.com/facebook/react/pull/26842) by [@tyao1](https://github.com/tyao1))  
-  * Restore double invoking `useState()` and `useReducer()` initializer functions in *StrictMode* ([\#28248](https://github.com/facebook/react/pull/28248) by [@eps1lon](https://github.com/eps1lon))  
-  * Reuse memoized result from first pass ([\#25583](https://github.com/facebook/react/pull/25583) by [@acdlite](https://github.com/acdlite))  
-  * Fix `useId()` in *StrictMode* ([\#25713](https://github.com/facebook/react/pull/25713) by [@gnoff](https://github.com/gnoff))  
-  * Add component name to *StrictMode* error messages ([\#25718](https://github.com/facebook/react/pull/25718) by [@sammy-SC](https://github.com/sammy-SC))  
-* Add support for rendering BigInt ([\#24580](https://github.com/facebook/react/pull/24580) by [@eps1lon](https://github.com/eps1lon))  
-* `act()` no longer checks `shouldYield` which can be inaccurate in test environments ([\#26317](https://github.com/facebook/react/pull/26317) by [@acdlite](https://github.com/acdlite))  
-* Warn when keys are spread with props ([\#25697](https://github.com/facebook/react/pull/25697), [\#26080](https://github.com/facebook/react/pull/26080) by [@sebmarkbage](https://github.com/sebmarkbage) and [@kassens](https://github.com/kassens))  
-* Generate sourcemaps for production build artifacts ([\#26446](https://github.com/facebook/react/pull/26446) by [@markerikson](https://github.com/markerikson))  
-* Improve stack diffing algorithm ([\#27132](https://github.com/facebook/react/pull/27132) by [@KarimP](https://github.com/KarimP))  
-* Suspense throttling lowered from 500ms to 300ms ([\#26803](https://github.com/facebook/react/pull/26803) by [@acdlite](https://github.com/acdlite))  
-* Lazily propagate context changes ([\#20890](https://github.com/facebook/react/pull/20890) by [@acdlite](https://github.com/acdlite) and [@gnoff](https://github.com/gnoff))  
-* Immediately rerender pinged fiber ([\#25074](https://github.com/facebook/react/pull/25074) by [@acdlite](https://github.com/acdlite))  
-* Move update scheduling to microtask ([\#26512](https://github.com/facebook/react/pull/26512) by [@acdlite](https://github.com/acdlite))  
-* Consistently apply throttled retries ([\#26611](https://github.com/facebook/react/pull/26611), [\#26802](https://github.com/facebook/react/pull/26802) by [@acdlite](https://github.com/acdlite))  
-* Suspend Thenable/Lazy if it's used in React.Children ([\#28284](https://github.com/facebook/react/pull/28284) by [@sebmarkbage](https://github.com/sebmarkbage))  
-* Detect infinite update loops caused by render phase updates ([\#26625](https://github.com/facebook/react/pull/26625) by [@acdlite](https://github.com/acdlite))  
-* Update conditional hooks warning ([\#29626](https://github.com/facebook/react/pull/29626) by [@sophiebits](https://github.com/sophiebits))  
-* Update error URLs to go to new docs ([\#27240](https://github.com/facebook/react/pull/27240) by [@rickhanlonii](https://github.com/rickhanlonii))  
-* Rename the `react.element` symbol to `react.transitional.element` ([\#28813](https://github.com/facebook/react/pull/28813) by [@sebmarkbage](https://github.com/sebmarkbage))  
-* Fix crash when suspending in shell during `useSyncExternalStore()` re-render ([\#27199](https://github.com/facebook/react/pull/27199) by [@acdlite](https://github.com/acdlite))  
-* Fix incorrect “detected multiple renderers" error in tests ([\#22797](https://github.com/facebook/react/pull/22797) by [@eps1lon](https://github.com/eps1lon))  
-* Fix bug where effect cleanup may be called twice after bailout ([\#26561](https://github.com/facebook/react/pull/26561) by [@acdlite](https://github.com/acdlite))  
-* Fix suspending in shell during discrete update ([\#25495](https://github.com/facebook/react/pull/25495) by [@acdlite](https://github.com/acdlite))  
-* Fix memory leak after repeated setState bailouts ([\#25309](https://github.com/facebook/react/pull/25309) by [@acdlite](https://github.com/acdlite))  
-* Fix `useSyncExternalStore()` dropped update when state is dispatched in render phase ([\#25578](https://github.com/facebook/react/pull/25578) by [@pandaiolo](https://github.com/pandaiolo))  
-* Fix logging when rendering a lazy fragment ([\#30372](https://github.com/facebook/react/pull/30372) by [@tom-sherman](https://github.com/tom-sherman))  
-* Remove string refs ([\#25383](https://github.com/facebook/react/pull/25383), [\#28322](https://github.com/facebook/react/pull/28322) by [@eps1lon](https://github.com/eps1lon) and [@acdlite](https://github.com/acdlite))  
-* Remove Legacy Context (\#30319 by [@kassens](https://github.com/kassens))  
-* Remove `RefreshRuntime.findAffectedHostInstances` ([\#30538](https://github.com/facebook/react/pull/30538) by [@gaearon](https://github.com/gaearon))  
-* Remove client caching from `cache()` API ([\#27977](https://github.com/facebook/react/pull/27977), [\#28250](https://github.com/facebook/react/pull/28250) by [@acdlite](https://github.com/acdlite) and [@gnoff](https://github.com/gnoff))  
-* Remove `propTypes` ([\#28324](https://github.com/facebook/react/pull/28324), [\#28326](https://github.com/facebook/react/pull/28326) by [@gaearon](https://github.com/gaearon))  
-* Remove `defaultProps` support, except for classes ([\#28733](https://github.com/facebook/react/pull/28733) by [@acdlite](https://github.com/acdlite))  
-* Remove UMD builds ([\#28735](https://github.com/facebook/react/pull/28735) by [@gnoff](https://github.com/gnoff))  
-* Remove delay for non-transition updates ([\#26597](https://github.com/facebook/react/pull/26597) by [@acdlite](https://github.com/acdlite))  
-* Remove `createFactory` ([\#27798](https://github.com/facebook/react/pull/27798) by [@kassens](https://github.com/kassens))
-
-#### React DOM
-
-* Adds Form Actions to handle form submission ([\#26379](https://github.com/facebook/react/pull/26379), [\#26674](https://github.com/facebook/react/pull/26674), [\#26689](https://github.com/facebook/react/pull/26689), [\#26708](https://github.com/facebook/react/pull/26708), [\#26714](https://github.com/facebook/react/pull/26714),  [\#26735](https://github.com/facebook/react/pull/26735), [\#26846](https://github.com/facebook/react/pull/26846), [\#27358](https://github.com/facebook/react/pull/27358),  [\#28056](https://github.com/facebook/react/pull/28056) by [@sebmarkbage](https://github.com/sebmarkbage), [@acdlite](https://github.com/acdlite), and [@jupapios](https://github.com/jupapios))  
-* Add `useFormStatus()` hook to provide status information of the last form submission ([\#26719](https://github.com/facebook/react/pull/26719), [\#26722](https://github.com/facebook/react/pull/26722), [\#26788](https://github.com/facebook/react/pull/26788),  [\#29019](https://github.com/facebook/react/pull/29019), [\#28728](https://github.com/facebook/react/pull/28728), [\#28413](https://github.com/facebook/react/pull/28413) by [@acdlite](https://github.com/acdlite) and [@eps1lon](https://github.com/eps1lon))  
-* Support for Document Metadata. Adds `preinit`, `preinitModule`, `preconnect`, `prefetchDNS`, `preload`, and `preloadModule` APIs.  
-  * [\#25060](https://github.com/facebook/react/pull/25060), [\#25243](https://github.com/facebook/react/pull/25243), [\#25388](https://github.com/facebook/react/pull/25388), [\#25432](https://github.com/facebook/react/pull/25432), [\#25436](https://github.com/facebook/react/pull/25436), [\#25426](https://github.com/facebook/react/pull/25426), [\#25500](https://github.com/facebook/react/pull/25500), [\#25480](https://github.com/facebook/react/pull/25480), [\#25508](https://github.com/facebook/react/pull/25508), [\#25515](https://github.com/facebook/react/pull/25515), [\#25514](https://github.com/facebook/react/pull/25514), [\#25532](https://github.com/facebook/react/pull/25532), [\#25536](https://github.com/facebook/react/pull/25536), [\#25534](https://github.com/facebook/react/pull/25534), [\#25546](https://github.com/facebook/react/pull/25546), [\#25559](https://github.com/facebook/react/pull/25559), [\#25569](https://github.com/facebook/react/pull/25569), [\#25599](https://github.com/facebook/react/pull/25599), [\#25689](https://github.com/facebook/react/pull/25689), [\#26106](https://github.com/facebook/react/pull/26106), [\#26152](https://github.com/facebook/react/pull/26152), [\#26239](https://github.com/facebook/react/pull/26239), [\#26237](https://github.com/facebook/react/pull/26237), [\#26280](https://github.com/facebook/react/pull/26280), [\#26154](https://github.com/facebook/react/pull/26154), [\#26256](https://github.com/facebook/react/pull/26256), [\#26353](https://github.com/facebook/react/pull/26353), [\#26427](https://github.com/facebook/react/pull/26427), [\#26450](https://github.com/facebook/react/pull/26450), [\#26502](https://github.com/facebook/react/pull/26502),  [\#26514](https://github.com/facebook/react/pull/26514), [\#26531](https://github.com/facebook/react/pull/26531), [\#26532](https://github.com/facebook/react/pull/26532), [\#26557](https://github.com/facebook/react/pull/26557), [\#26871](https://github.com/facebook/react/pull/26871), [\#26881](https://github.com/facebook/react/pull/26881), [\#26877](https://github.com/facebook/react/pull/26877), [\#26873](https://github.com/facebook/react/pull/26873), [\#26880](https://github.com/facebook/react/pull/26880), [\#26942](https://github.com/facebook/react/pull/26942), [\#26938](https://github.com/facebook/react/pull/26938), [\#26940](https://github.com/facebook/react/pull/26940), [\#26939](https://github.com/facebook/react/pull/26939), [\#27030](https://github.com/facebook/react/pull/27030), [\#27201](https://github.com/facebook/react/pull/27201), [\#27212](https://github.com/facebook/react/pull/27212), [\#27217](https://github.com/facebook/react/pull/27217), [\#27218](https://github.com/facebook/react/pull/27218), [\#27220](https://github.com/facebook/react/pull/27220), [\#27224](https://github.com/facebook/react/pull/27224), [\#27223](https://github.com/facebook/react/pull/27223), [\#27269](https://github.com/facebook/react/pull/27269), [\#27260](https://github.com/facebook/react/pull/27260), [\#27347](https://github.com/facebook/react/pull/27347), [\#27346](https://github.com/facebook/react/pull/27346), [\#27361](https://github.com/facebook/react/pull/27361), [\#27400](https://github.com/facebook/react/pull/27400), [\#27541](https://github.com/facebook/react/pull/27541), [\#27610](https://github.com/facebook/react/pull/27610), [\#28110](https://github.com/facebook/react/pull/28110), [\#29693](https://github.com/facebook/react/pull/29693), [\#29732](https://github.com/facebook/react/pull/29732), [\#29811](https://github.com/facebook/react/pull/29811), [\#27586](https://github.com/facebook/react/pull/27586), [\#28069](https://github.com/facebook/react/pull/28069) by [@gnoff](https://github.com/gnoff), [@sebmarkbage](https://github.com/sebmarkbage), [@acdlite](https://github.com/acdlite), [@kassens](https://github.com/kassens), [@sokra](https://github.com/sokra), [@sweetliquid](https://github.com/sweetliquid)  
-* Add `fetchPriority` to `<img>` and `<link>` ([\#25927](https://github.com/facebook/react/pull/25927) by [@styfle](https://github.com/styfle))  
-* Add support for SVG `transformOrigin` prop ([\#26130](https://github.com/facebook/react/pull/26130) by [@arav-ind](https://github.com/arav-ind))  
-* Add support for `onScrollEnd` event ([\#26789](https://github.com/facebook/react/pull/26789) by [@devongovett](https://github.com/devongovett))  
-* Allow `<hr>` as child of `<select>` ([\#27632](https://github.com/facebook/react/pull/27632) by [@SouSingh](https://github.com/SouSingh))  
-* Add support for Popover API ([\#27981](https://github.com/facebook/react/pull/27981) by [@eps1lon](https://github.com/eps1lon))  
-* Add support for `inert` ([\#24730](https://github.com/facebook/react/pull/24730) by [@eps1lon](https://github.com/eps1lon))  
-* Add support for `imageSizes` and `imageSrcSet` ([\#22550](https://github.com/facebook/react/pull/22550) by [@eps1lon](https://github.com/eps1lon))  
-* Synchronously flush transitions in popstate events ([\#26025](https://github.com/facebook/react/pull/26025), [\#27559](https://github.com/facebook/react/pull/27559), [\#27505](https://github.com/facebook/react/pull/27505), [\#30759](https://github.com/facebook/react/pull/30759) by [@tyao1](https://github.com/tyao1) and [@acdlite](https://github.com/acdlite))  
-* `flushSync` exhausts queue even if something throws ([\#26366](https://github.com/facebook/react/pull/26366) by [@acdlite](https://github.com/acdlite))  
-* Throw error if `react` and `react-dom` versions don’t match ([\#29236](https://github.com/facebook/react/pull/29236) by [@acdlite](https://github.com/acdlite))  
-* Ensure `srcset` and `src` are assigned last on `<img>` instances ([\#30340](https://github.com/facebook/react/pull/30340) by [@gnoff](https://github.com/gnoff))  
-* Javascript URLs are replaced with functions that throw errors ([\#26507](https://github.com/facebook/react/pull/26507), [\#29808](https://github.com/facebook/react/pull/29808) by [@sebmarkbage](https://github.com/sebmarkbage) and [@kassens](https://github.com/kassens))  
-* Treat toggle and beforetoggle as discrete events ([\#29176](https://github.com/facebook/react/pull/29176) by [@eps1lon](https://github.com/eps1lon))  
-* Filter out empty `src` and `href` attributes (unless for `<a href=”” />`) ([\#18513](https://github.com/facebook/react/pull/18513), [\#28124](https://github.com/facebook/react/pull/28124) by [@bvaughn](https://github.com/bvaughn) and [@eps1lon](https://github.com/eps1lon))  
-* Fix unitless `scale` style property ([\#25601](https://github.com/facebook/react/pull/25601) by [@JonnyBurger](https://github.com/JonnyBurger))  
-* Fix `onChange` error message for controlled `<select>` ([\#27740](https://github.com/facebook/react/pull/27740) by [@Biki-das](https://github.com/Biki-das))  
-* Fix focus restore in child windows after element reorder ([\#30951](https://github.com/facebook/react/pull/30951) by [@ling1726](https://github.com/ling1726))  
-* Remove `render`, `hydrate`, `findDOMNode`, `unmountComponentAtNode`, `unstable_createEventHandle`, `unstable_renderSubtreeIntoContainer`, and `unstable_runWithPriority`. Move `createRoot` and `hydrateRoot` to `react-dom/client`. ([\#28271](https://github.com/facebook/react/pull/28271) by [@gnoff](https://github.com/gnoff))  
-* Remove `test-utils` ([\#28541](https://github.com/facebook/react/pull/28541) by [@eps1lon](https://github.com/eps1lon))  
-* Remove `unstable_flushControlled` ([\#26397](https://github.com/facebook/react/pull/26397) by [@kassens](https://github.com/kassens))  
-* Remove legacy mode ([\#28468](https://github.com/facebook/react/pull/28468) by [@gnoff](https://github.com/gnoff))  
-* Remove `renderToStaticNodeStream()` ([\#28873](https://github.com/facebook/react/pull/28873) by @gnoff)  
-* Remove `unstable_renderSubtreeIntoContainer` ([\#29771](https://github.com/facebook/react/pull/29771) by [@kassens](https://github.com/kassens))
-
-#### React DOM Server
-
-* Stable release of React Server Components ([Many, many PRs](https://github.com/facebook/react/pulls?q=is%3Apr+is%3Aclosed+%5BFlight%5D+in%3Atitle+created%3A%3C2024-12-01+) by [@sebmarkbage](https://github.com/sebmarkbage), [@acdlite](https://github.com/acdlite), [@gnoff](https://github.com/gnoff), [@sammy-SC](https://github.com/sammy-SC), [@gaearon](https://github.com/gaearon), [@sophiebits](https://github.com/sophiebits), [@unstubbable](https://github.com/unstubbable), [@lubieowoce](https://github.com/lubieowoce))
-* Support Server Actions ([\#26124](https://github.com/facebook/react/pull/26124), [\#26632](https://github.com/facebook/react/pull/26632), [\#27459](https://github.com/facebook/react/pull/27459) by [@sebmarkbage](https://github.com/sebmarkbage) and [@acdlite](https://github.com/acdlite))  
-* Changes to SSR  
-  * Add external runtime which bootstraps hydration on the client for binary transparency ([\#25437](https://github.com/facebook/react/pull/25437), [\#26169](https://github.com/facebook/react/pull/26169), [\#25499](https://github.com/facebook/react/pull/25499) by [@MofeiZ](https://github.com/mofeiZ) and [@acdlite](https://github.com/acdlite))  
-  * Support subresource integrity for `bootstrapScripts` and `bootstrapModules` ([\#25104](https://github.com/facebook/react/pull/25104) by [@gnoff](https://github.com/gnoff))  
-  * Fix null bytes written at text chunk boundaries ([\#26228](https://github.com/facebook/react/pull/26228) by [@sophiebits](https://github.com/sophiebits))  
-  * Fix logic around attribute serialization ([\#26526](https://github.com/facebook/react/pull/26526) by [@gnoff](https://github.com/gnoff))  
-  * Fix precomputed chunk cleared on Node 18 ([\#25645](https://github.com/facebook/react/pull/25645) by [@feedthejim](https://github.com/feedthejim))  
-  * Optimize end tag chunks ([\#27522](https://github.com/facebook/react/pull/27522) by [@yujunjung](https://github.com/yujunjung))  
-  * Gracefully handle suspending in DOM configs ([\#26768](https://github.com/facebook/react/pull/26768) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Check for nullish values on ReactCustomFormAction ([\#26770](https://github.com/facebook/react/pull/26770) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Preload `bootstrapModules`, `bootstrapScripts`, and update priority queue ([\#26754](https://github.com/facebook/react/pull/26754), [\#26753](https://github.com/facebook/react/pull/26753), [\#27190](https://github.com/facebook/react/pull/27190), [\#27189](https://github.com/facebook/react/pull/27189) by [@gnoff](https://github.com/gnoff))  
-  * Client render the nearest child or parent suspense boundary if replay errors or is aborted ([\#27386](https://github.com/facebook/react/pull/27386) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Don't bail out of flushing if we still have pending root tasks ([\#27385](https://github.com/facebook/react/pull/27385) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Ensure Resumable State is Serializable ([\#27388](https://github.com/facebook/react/pull/27388) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Remove extra render pass when reverting to client render ([\#26445](https://github.com/facebook/react/pull/26445) by [@acdlite](https://github.com/acdlite))  
-  * Fix unwinding context during selective hydration ([\#25876](https://github.com/facebook/react/pull/25876) by [@tyao1](https://github.com/tyao1))  
-  * Stop flowing and then abort if a stream is cancelled ([\#27405](https://github.com/facebook/react/pull/27405) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Pass cancellation reason to abort ([\#27536](https://github.com/facebook/react/pull/27536) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Add `onHeaders` entrypoint option ([\#27641](https://github.com/facebook/react/pull/27641), [\#27712](https://github.com/facebook/react/pull/27712) by [@gnoff](https://github.com/gnoff))  
-  * Escape `<style>` and `<script>` textContent to enable rendering inner content without dangerouslySetInnerHTML ([\#28870](https://github.com/facebook/react/pull/28870), [\#28871](https://github.com/facebook/react/pull/28871) by [@gnoff](https://github.com/gnoff))  
-  * Fallback to client replaying actions for Blob serialization ([\#28987](https://github.com/facebook/react/pull/28987) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Render Suspense fallback if boundary contains new stylesheet during sync update ([\#28965](https://github.com/facebook/react/pull/28965) by [@gnoff](https://github.com/gnoff))  
-  * Fix header length tracking (\#30327 by [@gnoff](https://github.com/gnoff))  
-  * Use `srcset` to trigger load event on mount (\#30351 by [@gnoff](https://github.com/gnoff))  
-  * Don't perform work when closing stream (\#30497 by [@gnoff](https://github.com/gnoff))  
-  * Allow aborting during render (\#30488, [\#30730](https://github.com/facebook/react/pull/30730) by [@gnoff](https://github.com/gnoff))  
-  * Start initial work immediately (\#31079 by [@gnoff](https://github.com/gnoff))  
-  * A transition flowing into a dehydrated boundary no longer suspends when showing fallback ([\#27230](https://github.com/facebook/react/pull/27230) by [@acdlite](https://github.com/acdlite))  
-  * Fix selective hydration triggers false update loop error ([\#27439](https://github.com/facebook/react/pull/27439) by [@acdlite](https://github.com/acdlite))  
-  * Warn for Child Iterator of all types but allow Generator Components ([\#28853](https://github.com/facebook/react/pull/28853) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Include regular stack trace in serialized errors ([\#28684](https://github.com/facebook/react/pull/28684), [\#28738](https://github.com/facebook/react/pull/28738) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Aborting early no longer infinitely suspends ([\#24751](https://github.com/facebook/react/pull/24751) by [@sebmarkbage](https://github.com/sebmarkbage))  
-  * Fix hydration warning suppression in text comparisons ([\#24784](https://github.com/facebook/react/pull/24784) by [@gnoff](https://github.com/gnoff))  
-  * Changes to error handling in SSR
-    * Add diffs to hydration warnings ([\#28502](https://github.com/facebook/react/pull/28502), [\#28512](https://github.com/facebook/react/pull/28512) by [@sebmarkbage](https://github.com/sebmarkbage))  
-    * Make Error creation lazy ([\#24728](https://github.com/facebook/react/pull/24728) by [@sebmarkbage](https://github.com/sebmarkbage))  
-    * Remove recoverable error when a sync update flows into a dehydrated boundary ([\#25692](https://github.com/facebook/react/pull/25692) by [@sebmarkbage](https://github.com/sebmarkbage))  
-    * Don't "fix up" mismatched text content with suppressedHydrationWarning ([\#26391](https://github.com/facebook/react/pull/26391) by [@sebmarkbage](https://github.com/sebmarkbage))  
-    * Fix component stacks in errors ([\#27456](https://github.com/facebook/react/pull/27456) by [@sebmarkbage](https://github.com/sebmarkbage))  
-    * Add component stacks to `onError` ([\#27761](https://github.com/facebook/react/pull/27761), [\#27850](https://github.com/facebook/react/pull/27850) by [@gnoff](https://github.com/gnoff) and [@sebmarkbage](https://github.com/sebmarkbage))  
-    * Throw hydration mismatch errors once ([\#28502](https://github.com/facebook/react/pull/28502) by [@sebmarkbage](https://github.com/sebmarkbage))  
-* Add Bun streaming server renderer ([\#25597](https://github.com/facebook/react/pull/25597) by [@colinhacks](https://github.com/colinhacks))  
-* Add nonce support to bootstrap scripts ([\#26738](https://github.com/facebook/react/pull/26738) by [@danieltott](https://github.com/danieltott))  
-* Add `crossorigin` support to bootstrap scripts ([\#26844](https://github.com/facebook/react/pull/26844) by [@HenriqueLimas](https://github.com/HenriqueLimas))  
-* Support `nonce` and `fetchpriority` in preload links ([\#26826](https://github.com/facebook/react/pull/26826) by [@liuyenwei](https://github.com/liuyenwei))  
-* Add `referrerPolicy` to `ReactDOM.preload()` ([\#27096](https://github.com/facebook/react/pull/27096) by [@styfle](https://github.com/styfle))  
-* Add server condition for `react/jsx-dev-runtime` ([\#28921](https://github.com/facebook/react/pull/28921) by [@himself65](https://github.com/himself65))   
-* Export version ([\#29596](https://github.com/facebook/react/pull/29596) by [@unstubbable](https://github.com/unstubbable))  
-* Rename the secret export of Client and Server internals ([\#28786](https://github.com/facebook/react/pull/28786), [\#28789](https://github.com/facebook/react/pull/28789) by [@sebmarkbage](https://github.com/sebmarkbage))  
-* Remove layout effect warning on server ([\#26395](https://github.com/facebook/react/pull/26395) by [@rickhanlonii](https://github.com/rickhanlonii))  
-* Remove `errorInfo.digest` from `onRecoverableError` ([\#28222](https://github.com/facebook/react/pull/28222) by [@gnoff](https://github.com/gnoff))
-
-#### ReactTestRenderer
-
-* Add deprecation error to `react-test-renderer` on web ([\#27903](https://github.com/facebook/react/pull/27903), [\#28904](https://github.com/facebook/react/pull/28904) by [@jackpope](https://github.com/jackpope) and [@acdlite](https://github.com/acdlite))  
-* Render with ConcurrentRoot on web ([\#28498](https://github.com/facebook/react/pull/28498) by [@jackpope](https://github.com/jackpope))  
-* Remove `react-test-renderer/shallow` export ([\#25475](https://github.com/facebook/react/pull/25475), [\#28497](https://github.com/facebook/react/pull/28497) by [@sebmarkbage](https://github.com/sebmarkbage) and [@jackpope](https://github.com/jackpope))
-
-#### React Reconciler
-
-* Enable suspending commits without blocking render ([\#26398](https://github.com/facebook/react/pull/26398), [\#26427](https://github.com/facebook/react/pull/26427) by [@acdlite](https://github.com/acdlite))  
-* Remove `prepareUpdate` ([\#26583](https://github.com/facebook/react/pull/26583), [\#27409](http://github.com/facebook/react/pull/27409) by [@sebmarkbage](https://github.com/sebmarkbage) and [@sophiebits](https://github.com/sophiebits))
-
-#### React-Is
-
-* Enable tree shaking ([\#27701](https://github.com/facebook/react/pull/27701) by [@markerikson](https://github.com/markerikson))  
-* Remove `isConcurrentMode` and `isAsyncMode` methods ([\#28224](https://github.com/facebook/react/pull/28224) by @gaearon)
-
-#### useSyncExternalStore
-
-* Remove React internals access ([\#29868](https://github.com/facebook/react/pull/29868) by [@phryneas](https://github.com/phryneas))  
-* Fix stale selectors keeping previous store references ([\#25969](https://github.com/facebook/react/pull/25968) by [@jellevoost](https://github.com/jellevoost))
-
-## 18.3.1 (April 26, 2024)
-
-- Export `act` from `react` [f1338f](https://github.com/facebook/react/commit/f1338f8080abd1386454a10bbf93d67bfe37ce85)
-
-## 18.3.0 (April 25, 2024)
-
-This release is identical to 18.2 but adds warnings for deprecated APIs and other changes that are needed for React 19.
-
-Read the [React 19 Upgrade Guide](https://react.dev/blog/2024/04/25/react-19-upgrade-guide) for more info.
-
-### React
-
-- Allow writing to `this.refs` to support string ref codemod [909071](https://github.com/facebook/react/commit/9090712fd3ca4e1099e1f92e67933c2cb4f32552)
-- Warn for deprecated `findDOMNode` outside StrictMode [c3b283](https://github.com/facebook/react/commit/c3b283964108b0e8dbcf1f9eb2e7e67815e39dfb)
-- Warn for deprecated `test-utils` methods [d4ea75](https://github.com/facebook/react/commit/d4ea75dc4258095593b6ac764289f42bddeb835c)
-- Warn for deprecated Legacy Context outside StrictMode [415ee0](https://github.com/facebook/react/commit/415ee0e6ea0fe3e288e65868df2e3241143d5f7f)
-- Warn for deprecated string refs outside StrictMode [#25383](https://github.com/facebook/react/pull/25383)
-- Warn for deprecated `defaultProps` for function components [#25699](https://github.com/facebook/react/pull/25699)
-- Warn when spreading `key` [#25697](https://github.com/facebook/react/pull/25697)
-- Warn when using `act` from `test-utils` [d4ea75](https://github.com/facebook/react/commit/d4ea75dc4258095593b6ac764289f42bddeb835c)
-
-### React DOM
-- Warn for deprecated `unmountComponentAtNode` [8a015b](https://github.com/facebook/react/commit/8a015b68cc060079878e426610e64e86fb328f8d)
-- Warn for deprecated `renderToStaticNodeStream` [#28874](https://github.com/facebook/react/pull/28874)
-
-## 18.2.0 (June 14, 2022)
-
-### React DOM
-
-* Provide a component stack as a second argument to `onRecoverableError`. ([@gnoff](https://github.com/gnoff) in [#24591](https://github.com/facebook/react/pull/24591))
-* Fix hydrating into `document` causing a blank page on mismatch. ([@gnoff](https://github.com/gnoff) in [#24523](https://github.com/facebook/react/pull/24523))
-* Fix false positive hydration errors with Suspense. ([@gnoff](https://github.com/gnoff) in [#24480](https://github.com/facebook/react/pull/24480) and  [@acdlite](https://github.com/acdlite) in [#24532](https://github.com/facebook/react/pull/24532))
-* Fix ignored `setState` in Safari when adding an iframe. ([@gaearon](https://github.com/gaearon) in [#24459](https://github.com/facebook/react/pull/24459))
-
-### React DOM Server
-
-* Pass information about server errors to the client. ([@salazarm](https://github.com/salazarm) and [@gnoff](https://github.com/gnoff) in [#24551](https://github.com/facebook/react/pull/24551) and [#24591](https://github.com/facebook/react/pull/24591))
-* Allow to provide a reason when aborting the HTML stream. ([@gnoff](https://github.com/gnoff) in [#24680](https://github.com/facebook/react/pull/24680))
-* Eliminate extraneous text separators in the HTML where possible. ([@gnoff](https://github.com/gnoff) in [#24630](https://github.com/facebook/react/pull/24630))
-* Disallow complex children inside `<title>` elements to match the browser constraints. ([@gnoff](https://github.com/gnoff) in [#24679](https://github.com/facebook/react/pull/24679))
-* Fix buffering in some worker environments by explicitly setting `highWaterMark` to `0`. ([@jplhomer](https://github.com/jplhomer) in [#24641](https://github.com/facebook/react/pull/24641))
-
-### Server Components (Experimental)
-
-* Add support for `useId()` inside Server Components. ([@gnoff](https://github.com/gnoff) in [#24172](https://github.com/facebook/react/pull/24172))
-
-## 18.1.0 (April 26, 2022)
-
-### React DOM
-
-* Fix the false positive warning about `react-dom/client` when using UMD bundle. ([@alireza-molaee](https://github.com/alireza-molaee) in [#24274](https://github.com/facebook/react/pull/24274))
-* Fix `suppressHydrationWarning` to work in production too. ([@gaearon](https://github.com/gaearon) in [#24271](https://github.com/facebook/react/pull/24271))
-* Fix `componentWillUnmount` firing twice inside of Suspense. ([@acdlite](https://github.com/acdlite) in [#24308](https://github.com/facebook/react/pull/24308))
-* Fix some transition updates being ignored. ([@acdlite](https://github.com/acdlite) in [#24353](https://github.com/facebook/react/pull/24353))
-* Fix `useDeferredValue` causing an infinite loop when passed an unmemoized value. ([@acdlite](https://github.com/acdlite) in [#24247](https://github.com/facebook/react/pull/24247))
-* Fix throttling of revealing Suspense fallbacks. ([@sunderls](https://github.com/sunderls) in [#24253](https://github.com/facebook/react/pull/24253))
-* Fix an inconsistency in whether the props object is the same between renders. ([@Andarist](https://github.com/Andarist) and [@acdlite](https://github.com/acdlite) in [#24421](https://github.com/facebook/react/pull/24421))
-* Fix a missing warning about a `setState` loop in `useEffect`. ([@gaearon](https://github.com/gaearon) in [#24298](https://github.com/facebook/react/pull/24298))
-* Fix a spurious hydration error. ([@gnoff](https://github.com/gnoff) in [#24404](https://github.com/facebook/react/pull/24404))
-* Warn when calling `setState` in `useInsertionEffect`. ([@gaearon](https://github.com/gaearon) in [#24295](https://github.com/facebook/react/pull/24295))
-* Ensure the reason for hydration errors is always displayed. ([@gaearon](https://github.com/gaearon) in [#24276](https://github.com/facebook/react/pull/24276))
-
-### React DOM Server
-
-* Fix escaping for the `bootstrapScriptContent` contents. ([@gnoff](https://github.com/gnoff) in [#24385](https://github.com/facebook/react/pull/24385))
-* Significantly improve performance of `renderToPipeableStream`. ([@gnoff](https://github.com/gnoff) in [#24291](https://github.com/facebook/react/pull/24291))
-
-### ESLint Plugin: React Hooks
-
-* Fix false positive errors with a large number of branches. ([@scyron6](https://github.com/scyron6) in [#24287](https://github.com/facebook/react/pull/24287))
-* Don't consider a known dependency stable when the variable is reassigned. ([@afzalsayed96](https://github.com/afzalsayed96) in [#24343](https://github.com/facebook/react/pull/24343))
-
-### Use Subscription
-
-* Replace the implementation with the `use-sync-external-store` shim. ([@gaearon](https://github.com/gaearon) in [#24289](https://github.com/facebook/react/pull/24289))
-
-## 18.0.0 (March 29, 2022)
-
-Below is a list of all new features, APIs, deprecations, and breaking changes.
-Read [React 18 release post](https://reactjs.org/blog/2022/03/29/react-v18.html) and [React 18 upgrade guide](https://reactjs.org/blog/2022/03/08/react-18-upgrade-guide.html) for more information.
-
-### New Features
-
-### React
-
-* `useId` is a new hook for generating unique IDs on both the client and server, while avoiding hydration mismatches. It is primarily useful for component libraries integrating with accessibility APIs that require unique IDs. This solves an issue that already exists in React 17 and below, but it’s even more important in React 18 because of how the new streaming server renderer delivers HTML out-of-order.
-* `startTransition` and `useTransition` let you mark some state updates as not urgent. Other state updates are considered urgent by default. React will allow urgent state updates (for example, updating a text input) to interrupt non-urgent state updates (for example, rendering a list of search results).
-* `useDeferredValue` lets you defer re-rendering a non-urgent part of the tree. It is similar to debouncing, but has a few advantages compared to it. There is no fixed time delay, so React will attempt the deferred render right after the first render is reflected on the screen. The deferred render is interruptible and doesn't block user input.
-* `useSyncExternalStore` is a new hook that allows external stores to support concurrent reads by forcing updates to the store to be synchronous. It removes the need for `useEffect` when implementing subscriptions to external data sources, and is recommended for any library that integrates with state external to React.
-* `useInsertionEffect` is a new hook that allows CSS-in-JS libraries to address performance issues of injecting styles in render. Unless you’ve already built a CSS-in-JS library we don’t expect you to ever use this. This hook will run after the DOM is mutated, but before layout effects read the new layout. This solves an issue that already exists in React 17 and below, but is even more important in React 18 because React yields to the browser during concurrent rendering, giving it a chance to recalculate layout.
-
-### React DOM Client
-
-These new APIs are now exported from `react-dom/client`:
-
-* `createRoot`: New method to create a root to `render` or `unmount`. Use it instead of `ReactDOM.render`. New features in React 18 don't work without it.
-* `hydrateRoot`: New method to hydrate a server rendered application. Use it instead of `ReactDOM.hydrate` in conjunction with the new React DOM Server APIs. New features in React 18 don't work without it.
-
-Both `createRoot` and `hydrateRoot` accept a new option called `onRecoverableError` in case you want to be notified when React recovers from errors during rendering or hydration for logging. By default, React will use [`reportError`](https://developer.mozilla.org/en-US/docs/Web/API/reportError), or `console.error` in the older browsers.
-
-### React DOM Server
-
-These new APIs are now exported from `react-dom/server` and have full support for streaming Suspense on the server:
-
-* `renderToPipeableStream`: for streaming in Node environments.
-* `renderToReadableStream`: for modern edge runtime environments, such as Deno and Cloudflare workers.
-
-The existing `renderToString` method keeps working but is discouraged.
-
-## Deprecations
-
-* `react-dom`: `ReactDOM.render` has been deprecated. Using it will warn and run your app in React 17 mode.
-* `react-dom`: `ReactDOM.hydrate` has been deprecated. Using it will warn and run your app in React 17 mode.
-* `react-dom`: `ReactDOM.unmountComponentAtNode` has been deprecated.
-* `react-dom`: `ReactDOM.renderSubtreeIntoContainer` has been deprecated.
-* `react-dom/server`: `ReactDOMServer.renderToNodeStream` has been deprecated.
-
-## Breaking Changes
-
-### React
-
-* **Automatic batching:** This release introduces a performance improvement that changes to the way React batches updates to do more batching automatically. See [Automatic batching for fewer renders in React 18](https://github.com/reactwg/react-18/discussions/21) for more info. In the rare case that you need to opt out, wrap the state update in `flushSync`.
-* **Stricter Strict Mode**: In the future, React will provide a feature that lets components preserve state between unmounts. To prepare for it, React 18 introduces a new development-only check to Strict Mode. React will automatically unmount and remount every component, whenever a component mounts for the first time, restoring the previous state on the second mount. If this breaks your app, consider removing Strict Mode until you can fix the components to be resilient to remounting with existing state.
-* **Consistent useEffect timing**: React now always synchronously flushes effect functions if the update was triggered during a discrete user input event such as a click or a keydown event. Previously, the behavior wasn't always predictable or consistent.
-* **Stricter hydration errors**: Hydration mismatches due to missing or extra text content are now treated like errors instead of warnings. React will no longer attempt to "patch up" individual nodes by inserting or deleting a node on the client in an attempt to match the server markup, and will revert to client rendering up to the closest `<Suspense>` boundary in the tree. This ensures the hydrated tree is consistent and avoids potential privacy and security holes that can be caused by hydration mismatches.
-* **Suspense trees are always consistent:** If a component suspends before it's fully added to the tree, React will not add it to the tree in an incomplete state or fire its effects. Instead, React will throw away the new tree completely, wait for the asynchronous operation to finish, and then retry rendering again from scratch. React will render the retry attempt concurrently, and without blocking the browser.
-* **Layout Effects with Suspense**: When a tree re-suspends and reverts to a fallback, React will now clean up layout effects, and then re-create them when the content inside the boundary is shown again. This fixes an issue which prevented component libraries from correctly measuring layout when used with Suspense.
-* **New JS Environment Requirements**: React now depends on modern browsers features including `Promise`, `Symbol`, and `Object.assign`. If you support older browsers and devices such as Internet Explorer which do not provide modern browser features natively or have non-compliant implementations, consider including a global polyfill in your bundled application.
-
-### Scheduler (Experimental)
-
-* Remove unstable `scheduler/tracing` API
-
-## Notable Changes
-
-### React
-
-* **Components can now render `undefined`:** React no longer throws if you return `undefined` from a component. This makes the allowed component return values consistent with values that are allowed in the middle of a component tree. We suggest to use a linter to prevent mistakes like forgetting a `return` statement before JSX.
-* **In tests, `act` warnings are now opt-in:** If you're running end-to-end tests, the `act` warnings are unnecessary. We've introduced an [opt-in](https://github.com/reactwg/react-18/discussions/102) mechanism so you can enable them only for unit tests where they are useful and beneficial.
-* **No warning about `setState` on unmounted components:** Previously, React warned about memory leaks when you call `setState` on an unmounted component. This warning was added for subscriptions, but people primarily run into it in scenarios where setting state is fine, and workarounds make the code worse. We've [removed](https://github.com/facebook/react/pull/22114) this warning.
-* **No suppression of console logs:** When you use Strict Mode, React renders each component twice to help you find unexpected side effects. In React 17, we've suppressed console logs for one of the two renders to make the logs easier to read. In response to [community feedback](https://github.com/facebook/react/issues/21783) about this being confusing, we've removed the suppression. Instead, if you have React DevTools installed, the second log's renders will be displayed in grey, and there will be an option (off by default) to suppress them completely.
-* **Improved memory usage:** React now cleans up more internal fields on unmount, making the impact from unfixed memory leaks that may exist in your application code less severe.
-
-### React DOM Server
-
-* **`renderToString`:** Will no longer error when suspending on the server. Instead, it will emit the fallback HTML for the closest `<Suspense>` boundary and then retry rendering the same content on the client. It is still recommended that you switch to a streaming API like `renderToPipeableStream` or `renderToReadableStream` instead.
-* **`renderToStaticMarkup`:** Will no longer error when suspending on the server. Instead, it will emit the fallback HTML for the closest `<Suspense>` boundary and retry rendering on the client.
-
-## All Changes
-
-## React
-
-* Add `useTransition` and `useDeferredValue` to separate urgent updates from transitions. ([#10426](https://github.com/facebook/react/pull/10426), [#10715](https://github.com/facebook/react/pull/10715), [#15593](https://github.com/facebook/react/pull/15593), [#15272](https://github.com/facebook/react/pull/15272), [#15578](https://github.com/facebook/react/pull/15578), [#15769](https://github.com/facebook/react/pull/15769), [#17058](https://github.com/facebook/react/pull/17058), [#18796](https://github.com/facebook/react/pull/18796), [#19121](https://github.com/facebook/react/pull/19121), [#19703](https://github.com/facebook/react/pull/19703), [#19719](https://github.com/facebook/react/pull/19719), [#19724](https://github.com/facebook/react/pull/19724), [#20672](https://github.com/facebook/react/pull/20672), [#20976](https://github.com/facebook/react/pull/20976) by [@acdlite](https://github.com/acdlite), [@lunaruan](https://github.com/lunaruan), [@rickhanlonii](https://github.com/rickhanlonii), and [@sebmarkbage](https://github.com/sebmarkbage))
-* Add `useId` for generating unique IDs. ([#17322](https://github.com/facebook/react/pull/17322), [#18576](https://github.com/facebook/react/pull/18576), [#22644](https://github.com/facebook/react/pull/22644), [#22672](https://github.com/facebook/react/pull/22672), [#21260](https://github.com/facebook/react/pull/21260) by [@acdlite](https://github.com/acdlite), [@lunaruan](https://github.com/lunaruan), and [@sebmarkbage](https://github.com/sebmarkbage))
-* Add `useSyncExternalStore` to help external store libraries integrate with React. ([#15022](https://github.com/facebook/react/pull/15022), [#18000](https://github.com/facebook/react/pull/18000), [#18771](https://github.com/facebook/react/pull/18771), [#22211](https://github.com/facebook/react/pull/22211), [#22292](https://github.com/facebook/react/pull/22292), [#22239](https://github.com/facebook/react/pull/22239), [#22347](https://github.com/facebook/react/pull/22347), [#23150](https://github.com/facebook/react/pull/23150) by [@acdlite](https://github.com/acdlite), [@bvaughn](https://github.com/bvaughn), and [@drarmstr](https://github.com/drarmstr))
-* Add `startTransition` as a version of `useTransition` without pending feedback. ([#19696](https://github.com/facebook/react/pull/19696) by [@rickhanlonii](https://github.com/rickhanlonii))
-* Add `useInsertionEffect` for CSS-in-JS libraries. ([#21913](https://github.com/facebook/react/pull/21913) by [@rickhanlonii](https://github.com/rickhanlonii))
-* Make Suspense remount layout effects when content reappears. ([#19322](https://github.com/facebook/react/pull/19322), [#19374](https://github.com/facebook/react/pull/19374), [#19523](https://github.com/facebook/react/pull/19523), [#20625](https://github.com/facebook/react/pull/20625), [#21079](https://github.com/facebook/react/pull/21079) by [@acdlite](https://github.com/acdlite), [@bvaughn](https://github.com/bvaughn), and [@lunaruan](https://github.com/lunaruan))
-* Make `<StrictMode>` re-run effects to check for restorable state. ([#19523](https://github.com/facebook/react/pull/19523) , [#21418](https://github.com/facebook/react/pull/21418) by [@bvaughn](https://github.com/bvaughn) and [@lunaruan](https://github.com/lunaruan))
-* Assume Symbols are always available. ([#23348](https://github.com/facebook/react/pull/23348) by [@sebmarkbage](https://github.com/sebmarkbage))
-* Remove `object-assign` polyfill. ([#23351](https://github.com/facebook/react/pull/23351) by [@sebmarkbage](https://github.com/sebmarkbage))
-* Remove unsupported `unstable_changedBits` API. ([#20953](https://github.com/facebook/react/pull/20953) by [@acdlite](https://github.com/acdlite))
-* Allow components to render undefined. ([#21869](https://github.com/facebook/react/pull/21869) by [@rickhanlonii](https://github.com/rickhanlonii))
-* Flush `useEffect` resulting from discrete events like clicks synchronously. ([#21150](https://github.com/facebook/react/pull/21150) by [@acdlite](https://github.com/acdlite))
-* Suspense `fallback={undefined}` now behaves the same as `null` and isn't ignored. ([#21854](https://github.com/facebook/react/pull/21854) by [@rickhanlonii](https://github.com/rickhanlonii))
-* Consider all `lazy()` resolving to the same component equivalent. ([#20357](https://github.com/facebook/react/pull/20357) by [@sebmarkbage](https://github.com/sebmarkbage))
-* Don't patch console during first render. ([#22308](https://github.com/facebook/react/pull/22308) by [@lunaruan](https://github.com/lunaruan))
-* Improve memory usage. ([#21039](https://github.com/facebook/react/pull/21039) by [@bgirard](https://github.com/bgirard))
-* Improve messages if string coercion throws (Temporal.*, Symbol, etc.) ([#22064](https://github.com/facebook/react/pull/22064) by [@justingrant](https://github.com/justingrant))
-* Use `setImmediate` when available over `MessageChannel`. ([#20834](https://github.com/facebook/react/pull/20834) by [@gaearon](https://github.com/gaearon))
-* Fix context failing to propagate inside suspended trees. ([#23095](https://github.com/facebook/react/pull/23095) by [@gaearon](https://github.com/gaearon))
-* Fix `useReducer` observing incorrect props by removing the eager bailout mechanism. ([#22445](https://github.com/facebook/react/pull/22445) by [@josephsavona](https://github.com/josephsavona))
-* Fix `setState` being ignored in Safari when appending iframes. ([#23111](https://github.com/facebook/react/pull/23111) by [@gaearon](https://github.com/gaearon))
-* Fix a crash when rendering `ZonedDateTime` in the tree. ([#20617](https://github.com/facebook/react/pull/20617) by [@dimaqq](https://github.com/dimaqq))
-* Fix a crash when document is set to `null` in tests. ([#22695](https://github.com/facebook/react/pull/22695) by [@SimenB](https://github.com/SimenB))
-* Fix `onLoad` not triggering when concurrent features are on. ([#23316](https://github.com/facebook/react/pull/23316) by [@gnoff](https://github.com/gnoff))
-* Fix a warning when a selector returns `NaN`.  ([#23333](https://github.com/facebook/react/pull/23333) by [@hachibeeDI](https://github.com/hachibeeDI))
-* Fix the generated license header. ([#23004](https://github.com/facebook/react/pull/23004) by [@vitaliemiron](https://github.com/vitaliemiron))
-* Add `package.json` as one of the entry points. ([#22954](https://github.com/facebook/react/pull/22954) by [@Jack](https://github.com/Jack-Works))
-* Allow suspending outside a Suspense boundary. ([#23267](https://github.com/facebook/react/pull/23267) by [@acdlite](https://github.com/acdlite))
-* Log a recoverable error whenever hydration fails. ([#23319](https://github.com/facebook/react/pull/23319) by [@acdlite](https://github.com/acdlite))
-
-### React DOM
-
-* Add `createRoot` and `hydrateRoot`. ([#10239](https://github.com/facebook/react/pull/10239), [#11225](https://github.com/facebook/react/pull/11225), [#12117](https://github.com/facebook/react/pull/12117), [#13732](https://github.com/facebook/react/pull/13732), [#15502](https://github.com/facebook/react/pull/15502), [#15532](https://github.com/facebook/react/pull/15532), [#17035](https://github.com/facebook/react/pull/17035), [#17165](https://github.com/facebook/react/pull/17165), [#20669](https://github.com/facebook/react/pull/20669), [#20748](https://github.com/facebook/react/pull/20748), [#20888](https://github.com/facebook/react/pull/20888), [#21072](https://github.com/facebook/react/pull/21072), [#21417](https://github.com/facebook/react/pull/21417), [#21652](https://github.com/facebook/react/pull/21652), [#21687](https://github.com/facebook/react/pull/21687), [#23207](https://github.com/facebook/react/pull/23207), [#23385](https://github.com/facebook/react/pull/23385) by [@acdlite](https://github.com/acdlite), [@bvaughn](https://github.com/bvaughn), [@gaearon](https://github.com/gaearon), [@lunaruan](https://github.com/lunaruan), [@rickhanlonii](https://github.com/rickhanlonii), [@trueadm](https://github.com/trueadm), and [@sebmarkbage](https://github.com/sebmarkbage))
-* Add selective hydration. ([#14717](https://github.com/facebook/react/pull/14717), [#14884](https://github.com/facebook/react/pull/14884), [#16725](https://github.com/facebook/react/pull/16725), [#16880](https://github.com/facebook/react/pull/16880), [#17004](https://github.com/facebook/react/pull/17004), [#22416](https://github.com/facebook/react/pull/22416), [#22629](https://github.com/facebook/react/pull/22629), [#22448](https://github.com/facebook/react/pull/22448), [#22856](https://github.com/facebook/react/pull/22856), [#23176](https://github.com/facebook/react/pull/23176) by [@acdlite](https://github.com/acdlite), [@gaearon](https://github.com/gaearon), [@salazarm](https://github.com/salazarm), and [@sebmarkbage](https://github.com/sebmarkbage))
-* Add `aria-description` to the list of known ARIA attributes. ([#22142](https://github.com/facebook/react/pull/22142) by [@mahyareb](https://github.com/mahyareb))
-* Add `onResize` event to video elements. ([#21973](https://github.com/facebook/react/pull/21973) by [@rileyjshaw](https://github.com/rileyjshaw))
-* Add `imageSizes` and `imageSrcSet` to known props. ([#22550](https://github.com/facebook/react/pull/22550) by [@eps1lon](https://github.com/eps1lon))
-* Allow non-string `<option>` children if `value` is provided.  ([#21431](https://github.com/facebook/react/pull/21431) by [@sebmarkbage](https://github.com/sebmarkbage))
-* Fix `aspectRatio` style not being applied. ([#21100](https://github.com/facebook/react/pull/21100) by [@gaearon](https://github.com/gaearon))
-* Warn if `renderSubtreeIntoContainer` is called. ([#23355](https://github.com/facebook/react/pull/23355) by [@acdlite](https://github.com/acdlite))
-
-### React DOM Server
-
-* Add the new streaming renderer. ([#14144](https://github.com/facebook/react/pull/14144), [#20970](https://github.com/facebook/react/pull/20970), [#21056](https://github.com/facebook/react/pull/21056), [#21255](https://github.com/facebook/react/pull/21255), [#21200](https://github.com/facebook/react/pull/21200), [#21257](https://github.com/facebook/react/pull/21257), [#21276](https://github.com/facebook/react/pull/21276), [#22443](https://github.com/facebook/react/pull/22443), [#22450](https://github.com/facebook/react/pull/22450), [#23247](https://github.com/facebook/react/pull/23247), [#24025](https://github.com/facebook/react/pull/24025), [#24030](https://github.com/facebook/react/pull/24030) by [@sebmarkbage](https://github.com/sebmarkbage))
-* Fix context providers in SSR when handling multiple requests. ([#23171](https://github.com/facebook/react/pull/23171) by [@frandiox](https://github.com/frandiox))
-* Revert to client render on text mismatch. ([#23354](https://github.com/facebook/react/pull/23354) by [@acdlite](https://github.com/acdlite))
-* Deprecate `renderToNodeStream`. ([#23359](https://github.com/facebook/react/pull/23359) by [@sebmarkbage](https://github.com/sebmarkbage))
-* Fix a spurious error log in the new server renderer. ([#24043](https://github.com/facebook/react/pull/24043) by [@eps1lon](https://github.com/eps1lon))
-* Fix a bug in the new server renderer. ([#22617](https://github.com/facebook/react/pull/22617) by [@shuding](https://github.com/shuding))
-* Ignore function and symbol values inside custom elements on the server. ([#21157](https://github.com/facebook/react/pull/21157) by [@sebmarkbage](https://github.com/sebmarkbage))
-
-### React DOM Test Utils
-
-* Throw when `act` is used in production. ([#21686](https://github.com/facebook/react/pull/21686) by [@acdlite](https://github.com/acdlite))
-* Support disabling spurious act warnings with `global.IS_REACT_ACT_ENVIRONMENT`. ([#22561](https://github.com/facebook/react/pull/22561) by [@acdlite](https://github.com/acdlite))
-* Expand act warning to cover all APIs that might schedule React work. ([#22607](https://github.com/facebook/react/pull/22607) by [@acdlite](https://github.com/acdlite))
-* Make `act` batch updates. ([#21797](https://github.com/facebook/react/pull/21797) by [@acdlite](https://github.com/acdlite))
-* Remove warning for dangling passive effects. ([#22609](https://github.com/facebook/react/pull/22609) by [@acdlite](https://github.com/acdlite))
-
-### React Refresh
-
-* Track late-mounted roots in Fast Refresh. ([#22740](https://github.com/facebook/react/pull/22740) by [@anc95](https://github.com/anc95))
-* Add `exports` field to `package.json`. ([#23087](https://github.com/facebook/react/pull/23087) by [@otakustay](https://github.com/otakustay))
-
-### Server Components (Experimental)
-
-* Add Server Context support. ([#23244](https://github.com/facebook/react/pull/23244) by [@salazarm](https://github.com/salazarm))
-* Add `lazy` support. ([#24068](https://github.com/facebook/react/pull/24068) by [@gnoff](https://github.com/gnoff))
-* Update webpack plugin for webpack 5 ([#22739](https://github.com/facebook/react/pull/22739) by [@michenly](https://github.com/michenly))
-* Fix a mistake in the Node loader. ([#22537](https://github.com/facebook/react/pull/22537) by [@btea](https://github.com/btea))
-* Use `globalThis` instead of `window` for edge environments. ([#22777](https://github.com/facebook/react/pull/22777) by [@huozhi](https://github.com/huozhi))
-
-### Scheduler (Experimental)
-
-* Remove unstable `scheduler/tracing` API ([#20037](https://github.com/facebook/react/pull/20037) by [@bvaughn](https://github.com/bvaughn))
-
-## 17.0.2 (March 22, 2021)
-
-### React DOM
-
-* Remove an unused dependency to address the [`SharedArrayBuffer` cross-origin isolation warning](https://developer.chrome.com/blog/enabling-shared-array-buffer/). ([@koba04](https://github.com/koba04) and [@bvaughn](https://github.com/bvaughn) in [#20831](https://github.com/facebook/react/pull/20831), [#20832](https://github.com/facebook/react/pull/20832), and [#20840](https://github.com/facebook/react/pull/20840))
-
-## 17.0.1 (October 22, 2020)
-
-### React DOM
-
-* Fix a crash in IE11. ([@gaearon](https://github.com/gaearon) in [#20071](https://github.com/facebook/react/pull/20071))
-
-## 17.0.0 (October 20, 2020)
-
-Today, we are releasing React 17!
-
-**[Learn more about React 17 and how to update to it on the official React blog.](https://reactjs.org/blog/2020/10/20/react-v17.html)**
-
-### React
-
-* Add `react/jsx-runtime` and `react/jsx-dev-runtime` for the [new JSX transform](https://babeljs.io/blog/2020/03/16/7.9.0#a-new-jsx-transform-11154-https-githubcom-babel-babel-pull-11154). ([@lunaruan](https://github.com/lunaruan) in [#18299](https://github.com/facebook/react/pull/18299))
-* Build component stacks from native error frames. ([@sebmarkbage](https://github.com/sebmarkbage) in [#18561](https://github.com/facebook/react/pull/18561))
-* Allow to specify `displayName` on context for improved stacks. ([@eps1lon](https://github.com/eps1lon) in [#18224](https://github.com/facebook/react/pull/18224))
-* Prevent `'use strict'` from leaking in the UMD bundles. ([@koba04](https://github.com/koba04) in [#19614](https://github.com/facebook/react/pull/19614))
-* Stop using `fb.me` for redirects. ([@cylim](https://github.com/cylim) in [#19598](https://github.com/facebook/react/pull/19598))
-
-### React DOM
-
-* Delegate events to roots instead of `document`. ([@trueadm](https://github.com/trueadm) in [#18195](https://github.com/facebook/react/pull/18195) and [others](https://github.com/facebook/react/pulls?q=is%3Apr+author%3Atrueadm+modern+event+is%3Amerged))
-* Clean up all effects before running any next effects. ([@bvaughn](https://github.com/bvaughn) in [#17947](https://github.com/facebook/react/pull/17947))
-* Run `useEffect` cleanup functions asynchronously. ([@bvaughn](https://github.com/bvaughn) in [#17925](https://github.com/facebook/react/pull/17925))
-* Use browser `focusin` and `focusout` for `onFocus` and `onBlur`. ([@trueadm](https://github.com/trueadm) in [#19186](https://github.com/facebook/react/pull/19186))
-* Make all `Capture` events use the browser capture phase. ([@trueadm](https://github.com/trueadm) in [#19221](https://github.com/facebook/react/pull/19221))
-* Don't emulate bubbling of the `onScroll` event. ([@gaearon](https://github.com/gaearon) in [#19464](https://github.com/facebook/react/pull/19464))
-* Throw if `forwardRef` or `memo` component returns `undefined`. ([@gaearon](https://github.com/gaearon) in [#19550](https://github.com/facebook/react/pull/19550))
-* Remove event pooling. ([@trueadm](https://github.com/trueadm) in [#18969](https://github.com/facebook/react/pull/18969))
-* Stop exposing internals that won’t be needed by React Native Web. ([@necolas](https://github.com/necolas) in [#18483](https://github.com/facebook/react/pull/18483))
-* Attach all known event listeners when the root mounts. ([@gaearon](https://github.com/gaearon) in [#19659](https://github.com/facebook/react/pull/19659))
-* Disable `console` in the second render pass of DEV mode double render. ([@sebmarkbage](https://github.com/sebmarkbage) in [#18547](https://github.com/facebook/react/pull/18547))
-* Deprecate the undocumented and misleading `ReactTestUtils.SimulateNative` API. ([@gaearon](https://github.com/gaearon) in [#13407](https://github.com/facebook/react/pull/13407))
-* Rename private field names used in the internals. ([@gaearon](https://github.com/gaearon) in [#18377](https://github.com/facebook/react/pull/18377))
-* Don't call User Timing API in development. ([@gaearon](https://github.com/gaearon) in [#18417](https://github.com/facebook/react/pull/18417))
-* Disable console during the repeated render in Strict Mode. ([@sebmarkbage](https://github.com/sebmarkbage) in [#18547](https://github.com/facebook/react/pull/18547))
-* In Strict Mode, double-render components without Hooks too. ([@eps1lon](https://github.com/eps1lon) in [#18430](https://github.com/facebook/react/pull/18430))
-* Allow calling `ReactDOM.flushSync` during lifecycle methods (but warn). ([@sebmarkbage](https://github.com/sebmarkbage) in [#18759](https://github.com/facebook/react/pull/18759))
-* Add the `code` property to the keyboard event objects. ([@bl00mber](https://github.com/bl00mber) in [#18287](https://github.com/facebook/react/pull/18287))
-* Add the `disableRemotePlayback` property for `video` elements. ([@tombrowndev](https://github.com/tombrowndev) in [#18619](https://github.com/facebook/react/pull/18619))
-* Add the `enterKeyHint` property for `input` elements. ([@eps1lon](https://github.com/eps1lon) in [#18634](https://github.com/facebook/react/pull/18634))
-* Warn when no `value` is provided to `<Context.Provider>`. ([@charlie1404](https://github.com/charlie1404) in [#19054](https://github.com/facebook/react/pull/19054))
-* Warn when `memo` or `forwardRef` components return `undefined`. ([@bvaughn](https://github.com/bvaughn) in [#19550](https://github.com/facebook/react/pull/19550))
-* Improve the error message for invalid updates. ([@JoviDeCroock](https://github.com/JoviDeCroock) in [#18316](https://github.com/facebook/react/pull/18316))
-* Exclude forwardRef and memo from stack frames. ([@sebmarkbage](https://github.com/sebmarkbage) in [#18559](https://github.com/facebook/react/pull/18559))
-* Improve the error message when switching between controlled and uncontrolled inputs. ([@vcarl](https://github.com/vcarl) in [#17070](https://github.com/facebook/react/pull/17070))
-* Keep `onTouchStart`, `onTouchMove`, and `onWheel` passive. ([@gaearon](https://github.com/gaearon) in [#19654](https://github.com/facebook/react/pull/19654))
-* Fix `setState` hanging in development inside a closed iframe. ([@gaearon](https://github.com/gaearon) in [#19220](https://github.com/facebook/react/pull/19220))
-* Fix rendering bailout for lazy components with `defaultProps`. ([@jddxf](https://github.com/jddxf) in [#18539](https://github.com/facebook/react/pull/18539))
-* Fix a false positive warning when `dangerouslySetInnerHTML` is `undefined`. ([@eps1lon](https://github.com/eps1lon) in [#18676](https://github.com/facebook/react/pull/18676))
-* Fix Test Utils with non-standard `require` implementation. ([@just-boris](https://github.com/just-boris) in [#18632](https://github.com/facebook/react/pull/18632))
-* Fix `onBeforeInput` reporting an incorrect `event.type`. ([@eps1lon](https://github.com/eps1lon) in [#19561](https://github.com/facebook/react/pull/19561))
-* Fix `event.relatedTarget` reported as `undefined` in Firefox. ([@claytercek](https://github.com/claytercek) in [#19607](https://github.com/facebook/react/pull/19607))
-* Fix "unspecified error" in IE11. ([@hemakshis](https://github.com/hemakshis) in [#19664](https://github.com/facebook/react/pull/19664))
-* Fix rendering into a shadow root. ([@Jack-Works](https://github.com/Jack-Works) in [#15894](https://github.com/facebook/react/pull/15894))
-* Fix `movementX/Y` polyfill with capture events. ([@gaearon](https://github.com/gaearon) in [#19672](https://github.com/facebook/react/pull/19672))
-* Use delegation for `onSubmit` and `onReset` events. ([@gaearon](https://github.com/gaearon) in [#19333](https://github.com/facebook/react/pull/19333))
-* Improve memory usage. ([@trueadm](https://github.com/trueadm) in [#18970](https://github.com/facebook/react/pull/18970))
-
-### React DOM Server
-
-* Make `useCallback` behavior consistent with `useMemo` for the server renderer. ([@alexmckenley](https://github.com/alexmckenley) in [#18783](https://github.com/facebook/react/pull/18783))
-* Fix state leaking when a function component throws. ([@pmaccart](https://github.com/pmaccart) in [#19212](https://github.com/facebook/react/pull/19212))
-
-### React Test Renderer
-
-* Improve `findByType` error message. ([@henryqdineen](https://github.com/henryqdineen) in [#17439](https://github.com/facebook/react/pull/17439))
-
-### Concurrent Mode (Experimental)
-
-* Revamp the priority batching heuristics. ([@acdlite](https://github.com/acdlite) in [#18796](https://github.com/facebook/react/pull/18796))
-* Add the `unstable_` prefix before the experimental APIs. ([@acdlite](https://github.com/acdlite) in [#18825](https://github.com/facebook/react/pull/18825))
-* Remove `unstable_discreteUpdates` and `unstable_flushDiscreteUpdates`. ([@trueadm](https://github.com/trueadm) in [#18825](https://github.com/facebook/react/pull/18825))
-* Remove the `timeoutMs` argument. ([@acdlite](https://github.com/acdlite) in [#19703](https://github.com/facebook/react/pull/19703))
-* Disable `<div hidden />` prerendering in favor of a different future API. ([@acdlite](https://github.com/acdlite) in [#18917](https://github.com/facebook/react/pull/18917))
-* Add `unstable_expectedLoadTime` to Suspense for CPU-bound trees. ([@acdlite](https://github.com/acdlite) in [#19936](https://github.com/facebook/react/pull/19936))
-* Add an experimental `unstable_useOpaqueIdentifier` Hook. ([@lunaruan](https://github.com/lunaruan) in [#17322](https://github.com/facebook/react/pull/17322))
-* Add an experimental `unstable_startTransition` API. ([@rickhanlonii](https://github.com/rickhanlonii) in [#19696](https://github.com/facebook/react/pull/19696))
-* Using `act` in the test renderer no longer flushes Suspense fallbacks. ([@acdlite](https://github.com/acdlite) in [#18596](https://github.com/facebook/react/pull/18596))
-* Use global render timeout for CPU Suspense. ([@sebmarkbage](https://github.com/sebmarkbage) in [#19643](https://github.com/facebook/react/pull/19643))
-* Clear the existing root content before mounting. ([@bvaughn](https://github.com/bvaughn) in [#18730](https://github.com/facebook/react/pull/18730))
-* Fix a bug with error boundaries. ([@acdlite](https://github.com/acdlite) in [#18265](https://github.com/facebook/react/pull/18265))
-* Fix a bug causing dropped updates in a suspended tree. ([@acdlite](https://github.com/acdlite) in [#18384](https://github.com/facebook/react/pull/18384) and [#18457](https://github.com/facebook/react/pull/18457))
-* Fix a bug causing dropped render phase updates. ([@acdlite](https://github.com/acdlite) in [#18537](https://github.com/facebook/react/pull/18537))
-* Fix a bug in SuspenseList. ([@sebmarkbage](https://github.com/sebmarkbage) in [#18412](https://github.com/facebook/react/pull/18412))
-* Fix a bug causing Suspense fallback to show too early. ([@acdlite](https://github.com/acdlite) in [#18411](https://github.com/facebook/react/pull/18411))
-* Fix a bug with class components inside SuspenseList. ([@sebmarkbage](https://github.com/sebmarkbage) in [#18448](https://github.com/facebook/react/pull/18448))
-* Fix a bug with inputs that may cause updates to be dropped. ([@jddxf](https://github.com/jddxf) in [#18515](https://github.com/facebook/react/pull/18515) and [@acdlite](https://github.com/acdlite) in [#18535](https://github.com/facebook/react/pull/18535))
-* Fix a bug causing Suspense fallback to get stuck.  ([@acdlite](https://github.com/acdlite) in [#18663](https://github.com/facebook/react/pull/18663))
-* Don't cut off the tail of a SuspenseList if hydrating. ([@sebmarkbage](https://github.com/sebmarkbage) in [#18854](https://github.com/facebook/react/pull/18854))
-* Fix a bug in `useMutableSource` that may happen when `getSnapshot` changes. ([@bvaughn](https://github.com/bvaughn) in [#18297](https://github.com/facebook/react/pull/18297))
-* Fix a tearing bug in `useMutableSource`. ([@bvaughn](https://github.com/bvaughn) in [#18912](https://github.com/facebook/react/pull/18912))
-* Warn if calling setState outside of render but before commit. ([@sebmarkbage](https://github.com/sebmarkbage) in [#18838](https://github.com/facebook/react/pull/18838))
-
-## 16.14.0 (October 14, 2020)
-
-### React
-
-* Add support for the [new JSX transform](https://reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html). ([@lunaruan](https://github.com/lunaruan) in [#18299](https://github.com/facebook/react/pull/18299))
-
-## 16.13.1 (March 19, 2020)
-
-### React DOM
-
-* Fix bug in legacy mode Suspense where effect clean-up functions are not fired. This only affects users who use Suspense for data fetching in legacy mode, which is not technically supported. ([@acdlite](https://github.com/acdlite) in [#18238](https://github.com/facebook/react/pull/18238))
-* Revert warning for cross-component updates that happen inside class render lifecycles (`componentWillReceiveProps`, `shouldComponentUpdate`, and so on). ([@gaearon](https://github.com/gaearon) in [#18330](https://github.com/facebook/react/pull/18330))
-
-## 16.13.0 (February 26, 2020)
-
-### React
-
-* Warn when a string ref is used in a manner that's not amenable to a future codemod ([@lunaruan](https://github.com/lunaruan) in [#17864](https://github.com/facebook/react/pull/17864))
-* Deprecate `React.createFactory()` ([@trueadm](https://github.com/trueadm) in [#17878](https://github.com/facebook/react/pull/17878))
-
-### React DOM
-
-* Warn when changes in `style` may cause an unexpected collision ([@sophiebits](https://github.com/sophiebits) in [#14181](https://github.com/facebook/react/pull/14181), [#18002](https://github.com/facebook/react/pull/18002))
-* Warn when a function component is updated during another component's render phase ([@acdlite](https://github.com/acdlite) in [#17099](https://github.com/facebook/react/pull/17099))
-* Deprecate `unstable_createPortal` ([@trueadm](https://github.com/trueadm) in [#17880](https://github.com/facebook/react/pull/17880))
-* Fix `onMouseEnter` being fired on disabled buttons ([@AlfredoGJ](https://github.com/AlfredoGJ) in [#17675](https://github.com/facebook/react/pull/17675))
-* Call `shouldComponentUpdate` twice when developing in `StrictMode` ([@bvaughn](https://github.com/bvaughn) in [#17942](https://github.com/facebook/react/pull/17942))
-* Add `version` property to ReactDOM ([@ealush](https://github.com/ealush) in [#15780](https://github.com/facebook/react/pull/15780))
-* Don't call `toString()` of `dangerouslySetInnerHTML` ([@sebmarkbage](https://github.com/sebmarkbage) in [#17773](https://github.com/facebook/react/pull/17773))
-* Show component stacks in more warnings ([@gaearon](https://github.com/gaearon) in [#17922](https://github.com/facebook/react/pull/17922), [#17586](https://github.com/facebook/react/pull/17586))
-
-### Concurrent Mode (Experimental)
-
-* Warn for problematic usages of `ReactDOM.createRoot()` ([@trueadm](https://github.com/trueadm) in [#17937](https://github.com/facebook/react/pull/17937))
-* Remove `ReactDOM.createRoot()` callback params and added warnings on usage ([@bvaughn](https://github.com/bvaughn) in [#17916](https://github.com/facebook/react/pull/17916))
-* Don't group Idle/Offscreen work with other work ([@sebmarkbage](https://github.com/sebmarkbage) in [#17456](https://github.com/facebook/react/pull/17456))
-* Adjust `SuspenseList` CPU bound heuristic ([@sebmarkbage](https://github.com/sebmarkbage) in [#17455](https://github.com/facebook/react/pull/17455))
-* Add missing event plugin priorities ([@trueadm](https://github.com/trueadm) in [#17914](https://github.com/facebook/react/pull/17914))
-* Fix `isPending` only being true when transitioning from inside an input event ([@acdlite](https://github.com/acdlite) in [#17382](https://github.com/facebook/react/pull/17382))
-* Fix `React.memo` components dropping updates when interrupted by a higher priority update ([@acdlite]((https://github.com/acdlite)) in [#18091](https://github.com/facebook/react/pull/18091))
-* Don't warn when suspending at the wrong priority ([@gaearon](https://github.com/gaearon) in [#17971](https://github.com/facebook/react/pull/17971))
-* Fix a bug with rebasing updates ([@acdlite](https://github.com/acdlite) and [@sebmarkbage](https://github.com/sebmarkbage) in [#17560](https://github.com/facebook/react/pull/17560), [#17510](https://github.com/facebook/react/pull/17510), [#17483](https://github.com/facebook/react/pull/17483), [#17480](https://github.com/facebook/react/pull/17480))
-
-## 16.12.0 (November 14, 2019)
-
-### React DOM
-
-* Fix passive effects (`useEffect`) not being fired in a multi-root app. ([@acdlite](https://github.com/acdlite) in [#17347](https://github.com/facebook/react/pull/17347))
-
-### React Is
-
-* Fix `lazy` and `memo` types considered elements instead of components ([@bvaughn](https://github.com/bvaughn) in [#17278](https://github.com/facebook/react/pull/17278))
-
-## 16.11.0 (October 22, 2019)
-
-### React DOM
-
-* Fix `mouseenter` handlers from firing twice inside nested React containers. [@yuanoook](https://github.com/yuanoook) in [#16928](https://github.com/facebook/react/pull/16928)
-* Remove `unstable_createRoot` and `unstable_createSyncRoot` experimental APIs. (These are available in the Experimental channel as `createRoot` and `createSyncRoot`.) ([@acdlite](http://github.com/acdlite) in [#17088](https://github.com/facebook/react/pull/17088))
-
-## 16.10.2 (October 3, 2019)
-
-### React DOM
-
-* Fix regression in react-native-web by restoring order of arguments in event plugin extractors ([@necolas](https://github.com/necolas) in [#16978](https://github.com/facebook/react/pull/16978))
-
-## 16.10.1 (September 28, 2019)
-
-### React DOM
-
-* Fix regression in Next.js apps by allowing Suspense mismatch during hydration to silently proceed ([@sebmarkbage](https://github.com/sebmarkbage) in [#16943](https://github.com/facebook/react/pull/16943))
-
-## 16.10.0 (September 27, 2019)
-
-### React DOM
-
-* Fix edge case where a hook update wasn't being memoized. ([@sebmarkbage](http://github.com/sebmarkbage) in [#16359](https://github.com/facebook/react/pull/16359))
-* Fix heuristic for determining when to hydrate, so we don't incorrectly hydrate during an update. ([@sebmarkbage](http://github.com/sebmarkbage) in [#16739](https://github.com/facebook/react/pull/16739))
-* Clear additional fiber fields during unmount to save memory. ([@trueadm](http://github.com/trueadm) in [#16807](https://github.com/facebook/react/pull/16807))
-* Fix bug with required text fields in Firefox. ([@halvves](http://github.com/halvves) in [#16578](https://github.com/facebook/react/pull/16578))
-* Prefer `Object.is` instead of inline polyfill, when available. ([@ku8ar](http://github.com/ku8ar) in [#16212](https://github.com/facebook/react/pull/16212))
-* Fix bug when mixing Suspense and error handling. ([@acdlite](http://github.com/acdlite) in [#16801](https://github.com/facebook/react/pull/16801))
-
-
-### Scheduler (Experimental)
-
-* Improve queue performance by switching its internal data structure to a min binary heap. ([@acdlite](http://github.com/acdlite) in [#16245](https://github.com/facebook/react/pull/16245))
-* Use `postMessage` loop with short intervals instead of attempting to align to frame boundaries with `requestAnimationFrame`. ([@acdlite](http://github.com/acdlite) in [#16214](https://github.com/facebook/react/pull/16214))
-
-### useSubscription
-
-* Avoid tearing issue when a mutation happens and the previous update is still in progress. ([@bvaughn](http://github.com/bvaughn) in [#16623](https://github.com/facebook/react/pull/16623))
-
-## 16.9.0 (August 8, 2019)
-
-### React
-
-* Add `<React.Profiler>` API for gathering performance measurements programmatically. ([@bvaughn](https://github.com/bvaughn) in [#15172](https://github.com/facebook/react/pull/15172))
-* Remove `unstable_ConcurrentMode` in favor of `unstable_createRoot`. ([@acdlite](https://github.com/acdlite) in [#15532](https://github.com/facebook/react/pull/15532))
-
-### React DOM
-
-* Deprecate old names for the `UNSAFE_*` lifecycle methods. ([@bvaughn](https://github.com/bvaughn) in [#15186](https://github.com/facebook/react/pull/15186) and [@threepointone](https://github.com/threepointone) in [#16103](https://github.com/facebook/react/pull/16103))
-* Deprecate `javascript:` URLs as a common attack surface. ([@sebmarkbage](https://github.com/sebmarkbage) in [#15047](https://github.com/facebook/react/pull/15047))
-* Deprecate uncommon "module pattern" (factory) components. ([@sebmarkbage](https://github.com/sebmarkbage) in [#15145](https://github.com/facebook/react/pull/15145))
-* Add support for the `disablePictureInPicture` attribute on `<video>`. ([@eek](https://github.com/eek) in [#15334](https://github.com/facebook/react/pull/15334))
-* Add support for `onLoad` event for `<embed>`. ([@cherniavskii](https://github.com/cherniavskii) in [#15614](https://github.com/facebook/react/pull/15614))
-* Add support for editing `useState` state from DevTools. ([@bvaughn](https://github.com/bvaughn) in [#14906](https://github.com/facebook/react/pull/14906))
-* Add support for toggling Suspense from DevTools. ([@gaearon](https://github.com/gaearon) in [#15232](https://github.com/facebook/react/pull/15232))
-* Warn when `setState` is called from `useEffect`, creating a loop. ([@gaearon](https://github.com/gaearon) in [#15180](https://github.com/facebook/react/pull/15180))
-* Fix a memory leak. ([@paulshen](https://github.com/paulshen) in [#16115](https://github.com/facebook/react/pull/16115))
-* Fix a crash inside `findDOMNode` for components wrapped in `<Suspense>`. ([@acdlite](https://github.com/acdlite) in [#15312](https://github.com/facebook/react/pull/15312))
-* Fix pending effects from being flushed too late. ([@acdlite](https://github.com/acdlite) in [#15650](https://github.com/facebook/react/pull/15650))
-* Fix incorrect argument order in a warning message. ([@brickspert](https://github.com/brickspert) in [#15345](https://github.com/facebook/react/pull/15345))
-* Fix hiding Suspense fallback nodes when there is an `!important` style. ([@acdlite](https://github.com/acdlite) in [#15861](https://github.com/facebook/react/pull/15861) and [#15882](https://github.com/facebook/react/pull/15882))
-* Slightly improve hydration performance. ([@bmeurer](https://github.com/bmeurer) in [#15998](https://github.com/facebook/react/pull/15998))
-
-### React DOM Server
-
-* Fix incorrect output for camelCase custom CSS property names. ([@bedakb](https://github.com/bedakb) in [#16167](https://github.com/facebook/react/pull/16167))
-
-### React Test Utilities and Test Renderer
-
-* Add `act(async () => ...)` for testing asynchronous state updates. ([@threepointone](https://github.com/threepointone) in [#14853](https://github.com/facebook/react/pull/14853))
-* Add support for nesting `act` from different renderers. ([@threepointone](https://github.com/threepointone) in [#16039](https://github.com/facebook/react/pull/16039) and [#16042](https://github.com/facebook/react/pull/16042))
-* Warn in Strict Mode if effects are scheduled outside an `act()` call. ([@threepointone](https://github.com/threepointone) in [#15763](https://github.com/facebook/react/pull/15763) and [#16041](https://github.com/facebook/react/pull/16041))
-* Warn when using `act` from the wrong renderer. ([@threepointone](https://github.com/threepointone) in [#15756](https://github.com/facebook/react/pull/15756))
-
-### ESLint Plugin: React Hooks
-
-* Report Hook calls at the top level as a violation. ([gaearon](https://github.com/gaearon) in [#16455](https://github.com/facebook/react/pull/16455))
+## [Unreleased]
+<details>
+  <summary>
+    Changes that have landed in master but are not yet released.
+    Click to see more.
+  </summary>
+</details>
 
 ## 16.8.6 (March 27, 2019)
 
@@ -911,15 +43,11 @@ Today, we are releasing React 17!
 
 ### React DOM
 
-* Fix a bug that caused inputs to behave incorrectly in UMD builds. ([@gaearon](https://github.com/gaearon) in [#14914](https://github.com/facebook/react/pull/14914))
-* Fix a bug that caused render phase updates to be discarded. ([@gaearon](https://github.com/gaearon) in [#14852](https://github.com/facebook/react/pull/14852))
+- Fix a bug that caused inputs to behave incorrectly in UMD builds. ([@gaearon](https://github.com/gaearon) in [#14914](https://github.com/facebook/react/pull/14914))
+- Fix a bug that caused render phase updates to be discarded. ([@gaearon](https://github.com/gaearon) in [#14852](https://github.com/facebook/react/pull/14852))
 
 ### React DOM Server
-* Unwind the context stack when a stream is destroyed without completing, to prevent incorrect values during a subsequent render. ([@overlookmotel](https://github.com/overlookmotel) in [#14706](https://github.com/facebook/react/pull/14706/))
-
-### ESLint Plugin for React Hooks
-
-* Add a new recommended `exhaustive-deps` rule. ([@gaearon](https://github.com/gaearon) in [#14636](https://github.com/facebook/react/pull/14636))
+- Unwind the context stack when a stream is destroyed without completing, to prevent incorrect values during a subsequent render. ([@overlookmotel](https://github.com/overlookmotel) in [#14706](https://github.com/facebook/react/pull/14706/))
 
 ## 16.8.2 (February 14, 2019)
 
@@ -1313,7 +441,7 @@ This release was published in a broken state and should be skipped.
 * Fix an issue with `this.state` of different components getting mixed up. ([@sophiebits](https://github.com/sophiebits) in [#12323](https://github.com/facebook/react/pull/12323))
 * Provide a better message when component type is undefined. ([@HeroProtagonist](https://github.com/HeroProtagonist) in [#11966](https://github.com/facebook/react/pull/11966))
 
-### React Test Renderer
+## React Test Renderer
 
 * Fix handling of fragments in `toTree()`. ([@maciej-ka](https://github.com/maciej-ka) in [#12107](https://github.com/facebook/react/pull/12107) and [@gaearon](https://github.com/gaearon) in [#12154](https://github.com/facebook/react/pull/12154))
 * Shallow renderer should assign state to `null` for components that don't set it. ([@jwbay](https://github.com/jwbay) in [#11965](https://github.com/facebook/react/pull/11965))
@@ -1322,7 +450,7 @@ This release was published in a broken state and should be skipped.
 
 ### React Is (New)
 
-* First release of the [new package](https://github.com/facebook/react/tree/main/packages/react-is) that libraries can use to detect different React node types. ([@bvaughn](https://github.com/bvaughn) in [#12199](https://github.com/facebook/react/pull/12199))
+* First release of the [new package](https://github.com/facebook/react/tree/master/packages/react-is) that libraries can use to detect different React node types. ([@bvaughn](https://github.com/bvaughn) in [#12199](https://github.com/facebook/react/pull/12199))
 * Add `ReactIs.isValidElementType()` to help higher-order components validate their inputs. ([@jamesreggio](https://github.com/jamesreggio) in [#12483](https://github.com/facebook/react/pull/12483))
 
 ### React Lifecycles Compat (New)
@@ -1331,7 +459,7 @@ This release was published in a broken state and should be skipped.
 
 ### Create Subscription (New)
 
-* First release of the [new package](https://github.com/facebook/react/tree/main/packages/create-subscription) to subscribe to external data sources safely for async rendering. ([@bvaughn](https://github.com/bvaughn) in [#12325](https://github.com/facebook/react/pull/12325))
+* First release of the [new package](https://github.com/facebook/react/tree/master/packages/create-subscription) to subscribe to external data sources safely for async rendering. ([@bvaughn](https://github.com/bvaughn) in [#12325](https://github.com/facebook/react/pull/12325))
 
 ### React Reconciler (Experimental)
 
@@ -1462,12 +590,12 @@ Starting with 16.1.0, we will no longer be publishing new releases on Bower. You
 
 ### React Reconciler (Experimental)
 
-* First release of the [new experimental package](https://github.com/facebook/react/blob/main/packages/react-reconciler/README.md) for creating custom renderers. ([@iamdustan](https://github.com/iamdustan) in [#10758](https://github.com/facebook/react/pull/10758))
+* First release of the [new experimental package](https://github.com/facebook/react/blob/master/packages/react-reconciler/README.md) for creating custom renderers. ([@iamdustan](https://github.com/iamdustan) in [#10758](https://github.com/facebook/react/pull/10758))
 * Add support for React DevTools. ([@gaearon](https://github.com/gaearon) in [#11463](https://github.com/facebook/react/pull/11463))
 
 ### React Call Return (Experimental)
 
-* First release of the [new experimental package](https://github.com/facebook/react/tree/main/packages/react-call-return) for parent-child communication. ([@gaearon](https://github.com/gaearon) in [#11364](https://github.com/facebook/react/pull/11364))
+* First release of the [new experimental package](https://github.com/facebook/react/tree/master/packages/react-call-return) for parent-child communication. ([@gaearon](https://github.com/gaearon) in [#11364](https://github.com/facebook/react/pull/11364))
 
 ## 16.0.1 (August 1, 2018)
 
@@ -1520,12 +648,6 @@ Starting with 16.1.0, we will no longer be publishing new releases on Bower. You
 - There is no `react-with-addons.js` build anymore. All compatible addons are published separately on npm, and have single-file browser versions if you need them.
 - The deprecations introduced in 15.x have been removed from the core package. `React.createClass` is now available as create-react-class, `React.PropTypes` as prop-types, `React.DOM` as react-dom-factories, react-addons-test-utils as react-dom/test-utils, and shallow renderer as react-test-renderer/shallow. See [15.5.0](https://reactjs.org/blog/2017/04/07/react-v15.5.0.html) and [15.6.0](https://reactjs.org/blog/2017/06/13/react-v15.6.0.html) blog posts for instructions on migrating code and automated codemods.
 
-## 15.7.0 (October 14, 2020)
-
-### React
-
-* Backport support for the [new JSX transform](https://reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html) to 15.x. ([@lunaruan](https://github.com/lunaruan) in [#18299](https://github.com/facebook/react/pull/18299) and [@gaearon](https://github.com/gaearon) in [#20024](https://github.com/facebook/react/pull/20024))
-
 ## 15.6.2 (September 25, 2017)
 
 ### All Packages
@@ -1538,7 +660,7 @@ Starting with 16.1.0, we will no longer be publishing new releases on Bower. You
 * Fix bug in QtWebKit when wrapping synthetic events in proxies. ([@walrusfruitcake](https://github.com/walrusfruitcake) in [#10115](https://github.com/facebook/react/pull/10011))
 * Prevent event handlers from receiving extra argument in development. ([@aweary](https://github.com/aweary) in [#10115](https://github.com/facebook/react/pull/8363))
 * Fix cases where `onChange` would not fire with `defaultChecked` on radio inputs. ([@jquense](https://github.com/jquense) in [#10156](https://github.com/facebook/react/pull/10156))
-* Add support for `controlList` attribute to allowed DOM properties ([@nhunzaker](https://github.com/nhunzaker) in [#9940](https://github.com/facebook/react/pull/9940))
+* Add support for `controlList` attribute to DOM property whitelist ([@nhunzaker](https://github.com/nhunzaker) in [#9940](https://github.com/facebook/react/pull/9940))
 * Fix a bug where creating an element with a ref in a constructor did not throw an error in development. ([@iansu](https://github.com/iansu) in [#10025](https://github.com/facebook/react/pull/10025))
 
 ## 15.6.1 (June 14, 2017)
@@ -1974,14 +1096,9 @@ Each of these changes will continue to work as before with a new warning until t
 - Shallow renderer now returns the rendered output from `render()`. ([@simonewebdesign](https://github.com/simonewebdesign) in [#5411](https://github.com/facebook/react/pull/5411))
 - React no longer depends on ES5 *shams* for `Object.create` and `Object.freeze` in older environments. It still, however, requires ES5 *shims* in those environments. ([@dgreensp](https://github.com/dgreensp) in [#4959](https://github.com/facebook/react/pull/4959))
 - React DOM now allows `data-` attributes with names that start with numbers. ([@nLight](https://github.com/nLight) in [#5216](https://github.com/facebook/react/pull/5216))
-- React DOM adds a new `suppressContentEditableWarning` prop for components like [Draft.js](https://draftjs.org/) that intentionally manage `contentEditable` children with React. ([@mxstbr](https://github.com/mxstbr) in [#6112](https://github.com/facebook/react/pull/6112))
+- React DOM adds a new `suppressContentEditableWarning` prop for components like [Draft.js](https://facebook.github.io/draft-js/) that intentionally manage `contentEditable` children with React. ([@mxstbr](https://github.com/mxstbr) in [#6112](https://github.com/facebook/react/pull/6112))
 - React improves the performance for `createClass()` on complex specs. ([@sophiebits](https://github.com/sophiebits) in [#5550](https://github.com/facebook/react/pull/5550))
 
-## 0.14.10 (October 14, 2020)
-
-### React
-
-* Backport support for the [new JSX transform](https://reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html) to 0.14.x. ([@lunaruan](https://github.com/lunaruan) in [#18299](https://github.com/facebook/react/pull/18299) and [@gaearon](https://github.com/gaearon) in [#20024](https://github.com/facebook/react/pull/20024))
 
 ## 0.14.8 (March 29, 2016)
 

CODE_OF_CONDUCT.md

@@ -1,80 +1,3 @@
 # Code of Conduct
 
-## Our Pledge
-
-In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to make participation in our project and
-our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, sex characteristics, gender identity and expression,
-level of experience, education, socio-economic status, nationality, personal
-appearance, race, religion, or sexual identity and orientation.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment
-include:
-
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-* The use of sexualized language or imagery and unwelcome sexual attention or
-  advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic
-  address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in
-response to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies within all project spaces, and it also applies when
-an individual is representing the project or its community in public spaces.
-Examples of representing a project or community include using an official
-project e-mail address, posting via an official social media account, or acting
-as an appointed representative at an online or offline event. Representation of
-a project may be further defined and clarified by project maintainers.
-
-This Code of Conduct also applies outside the project spaces when there is a
-reasonable belief that an individual's behavior may have a negative impact on
-the project or its community.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at <opensource-conduct@fb.com>. All
-complaints will be reviewed and investigated and will result in a response that
-is deemed necessary and appropriate to the circumstances. The project team is
-obligated to maintain confidentiality with regard to the reporter of an incident.
-Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
-
-[homepage]: https://www.contributor-covenant.org
-
-For answers to common questions about this code of conduct, see
-https://www.contributor-covenant.org/faq
+Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please [read the full text](https://code.fb.com/codeofconduct/) so that you can understand what actions will and will not be tolerated.

CONTRIBUTING.md

@@ -2,4 +2,4 @@
 
 Want to contribute to React? There are a few things you need to know.  
 
-We wrote a **[contribution guide](https://reactjs.org/docs/how-to-contribute.html)** to help you get started.
+We wrote a **[contribution guide](https://reactjs.org/contributing/how-to-contribute.html)** to help you get started.

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) Meta Platforms, Inc. and affiliates.
+Copyright (c) Facebook, Inc. and its affiliates.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

MAINTAINERS

@@ -1,23 +0,0 @@
-acdlite
-eps1lon
-EugeneChoi4
-gaearon
-gnoff
-unstubbable
-hoxyq
-jackpope
-jbonta
-jbrown215
-josephsavona
-kassens
-mattcarrollcode
-mofeiZ
-mvitousek
-pieterv
-poteto
-rickhanlonii
-sebmarkbage
-sethwebster
-sophiebits
-elicwhite
-yuzhi

README.md

@@ -1,77 +1,74 @@
-# [React](https://react.dev/) · [![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/facebook/react/blob/main/LICENSE) [![npm version](https://img.shields.io/npm/v/react.svg?style=flat)](https://www.npmjs.com/package/react) [![(Runtime) Build and Test](https://github.com/facebook/react/actions/workflows/runtime_build_and_test.yml/badge.svg)](https://github.com/facebook/react/actions/workflows/runtime_build_and_test.yml) [![(Compiler) TypeScript](https://github.com/facebook/react/actions/workflows/compiler_typescript.yml/badge.svg?branch=main)](https://github.com/facebook/react/actions/workflows/compiler_typescript.yml) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://legacy.reactjs.org/docs/how-to-contribute.html#your-first-pull-request)
+# [React](https://reactjs.org/) · [![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/facebook/react/blob/master/LICENSE) [![npm version](https://img.shields.io/npm/v/react.svg?style=flat)](https://www.npmjs.com/package/react) [![Coverage Status](https://img.shields.io/coveralls/facebook/react/master.svg?style=flat)](https://coveralls.io/github/facebook/react?branch=master) [![CircleCI Status](https://circleci.com/gh/facebook/react.svg?style=shield&circle-token=:circle-token)](https://circleci.com/gh/facebook/react) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://reactjs.org/docs/how-to-contribute.html#your-first-pull-request)
 
 React is a JavaScript library for building user interfaces.
 
 * **Declarative:** React makes it painless to create interactive UIs. Design simple views for each state in your application, and React will efficiently update and render just the right components when your data changes. Declarative views make your code more predictable, simpler to understand, and easier to debug.
-* **Component-Based:** Build encapsulated components that manage their own state, then compose them to make complex UIs. Since component logic is written in JavaScript instead of templates, you can easily pass rich data through your app and keep the state out of the DOM.
-* **Learn Once, Write Anywhere:** We don't make assumptions about the rest of your technology stack, so you can develop new features in React without rewriting existing code. React can also render on the server using [Node](https://nodejs.org/en) and power mobile apps using [React Native](https://reactnative.dev/).
+* **Component-Based:** Build encapsulated components that manage their own state, then compose them to make complex UIs. Since component logic is written in JavaScript instead of templates, you can easily pass rich data through your app and keep state out of the DOM.
+* **Learn Once, Write Anywhere:** We don't make assumptions about the rest of your technology stack, so you can develop new features in React without rewriting existing code. React can also render on the server using Node and power mobile apps using [React Native](https://facebook.github.io/react-native/).
 
-[Learn how to use React in your project](https://react.dev/learn).
+[Learn how to use React in your own project](https://reactjs.org/docs/getting-started.html).
 
 ## Installation
 
 React has been designed for gradual adoption from the start, and **you can use as little or as much React as you need**:
 
-* Use [Quick Start](https://react.dev/learn) to get a taste of React.
-* [Add React to an Existing Project](https://react.dev/learn/add-react-to-an-existing-project) to use as little or as much React as you need.
-* [Create a New React App](https://react.dev/learn/start-a-new-react-project) if you're looking for a powerful JavaScript toolchain.
+* Use [Online Playgrounds](https://reactjs.org/docs/getting-started.html#online-playgrounds) to get a taste of React.
+* [Add React to a Website](https://reactjs.org/docs/add-react-to-a-website.html) as a `<script>` tag in one minute.
+* [Create a New React App](https://reactjs.org/docs/create-a-new-react-app.html) if you're looking for a powerful JavaScript toolchain.
+
+You can use React as a `<script>` tag from a [CDN](https://reactjs.org/docs/cdn-links.html), or as a `react` package on [npm](https://www.npmjs.com/).
 
 ## Documentation
 
-You can find the React documentation [on the website](https://react.dev/).
+You can find the React documentation [on the website](https://reactjs.org/docs).  
 
-Check out the [Getting Started](https://react.dev/learn) page for a quick overview.
+Check out the [Getting Started](https://reactjs.org/docs/getting-started.html) page for a quick overview.
 
 The documentation is divided into several sections:
 
-* [Quick Start](https://react.dev/learn)
-* [Tutorial](https://react.dev/learn/tutorial-tic-tac-toe)
-* [Thinking in React](https://react.dev/learn/thinking-in-react)
-* [Installation](https://react.dev/learn/installation)
-* [Describing the UI](https://react.dev/learn/describing-the-ui)
-* [Adding Interactivity](https://react.dev/learn/adding-interactivity)
-* [Managing State](https://react.dev/learn/managing-state)
-* [Advanced Guides](https://react.dev/learn/escape-hatches)
-* [API Reference](https://react.dev/reference/react)
-* [Where to Get Support](https://react.dev/community)
-* [Contributing Guide](https://legacy.reactjs.org/docs/how-to-contribute.html)
+* [Tutorial](https://reactjs.org/tutorial/tutorial.html)
+* [Main Concepts](https://reactjs.org/docs/hello-world.html)
+* [Advanced Guides](https://reactjs.org/docs/jsx-in-depth.html)
+* [API Reference](https://reactjs.org/docs/react-api.html)
+* [Where to Get Support](https://reactjs.org/community/support.html)
+* [Contributing Guide](https://reactjs.org/docs/how-to-contribute.html)
 
-You can improve it by sending pull requests to [this repository](https://github.com/reactjs/react.dev).
+You can improve it by sending pull requests to [this repository](https://github.com/reactjs/reactjs.org).
 
 ## Examples
 
-We have several examples [on the website](https://react.dev/). Here is the first one to get you started:
+We have several examples [on the website](https://reactjs.org/). Here is the first one to get you started:
 
 ```jsx
-import { createRoot } from 'react-dom/client';
-
 function HelloMessage({ name }) {
   return <div>Hello {name}</div>;
 }
 
-const root = createRoot(document.getElementById('container'));
-root.render(<HelloMessage name="Taylor" />);
+ReactDOM.render(
+  <HelloMessage name="Taylor" />,
+  document.getElementById('container')
+);
 ```
 
 This example will render "Hello Taylor" into a container on the page.
 
-You'll notice that we used an HTML-like syntax; [we call it JSX](https://react.dev/learn#writing-markup-with-jsx). JSX is not required to use React, but it makes code more readable, and writing it feels like writing HTML.
+You'll notice that we used an HTML-like syntax; [we call it JSX](https://reactjs.org/docs/introducing-jsx.html). JSX is not required to use React, but it makes code more readable, and writing it feels like writing HTML. If you're using React as a `<script>` tag, read [this section](https://reactjs.org/docs/add-react-to-a-website.html#optional-try-react-with-jsx) on integrating JSX; otherwise, the [recommended JavaScript toolchains](https://reactjs.org/docs/create-a-new-react-app.html) handle it automatically.
 
 ## Contributing
 
-The main purpose of this repository is to continue evolving React core, making it faster and easier to use. Development of React happens in the open on GitHub, and we are grateful to the community for contributing bugfixes and improvements. Read below to learn how you can take part in improving React.
+The main purpose of this repository is to continue to evolve React core, making it faster and easier to use. Development of React happens in the open on GitHub, and we are grateful to the community for contributing bugfixes and improvements. Read below to learn how you can take part in improving React.
 
 ### [Code of Conduct](https://code.fb.com/codeofconduct)
 
 Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read [the full text](https://code.fb.com/codeofconduct) so that you can understand what actions will and will not be tolerated.
 
-### [Contributing Guide](https://legacy.reactjs.org/docs/how-to-contribute.html)
+### [Contributing Guide](https://reactjs.org/contributing/how-to-contribute.html)
 
-Read our [contributing guide](https://legacy.reactjs.org/docs/how-to-contribute.html) to learn about our development process, how to propose bugfixes and improvements, and how to build and test your changes to React.
+Read our [contributing guide](https://reactjs.org/contributing/how-to-contribute.html) to learn about our development process, how to propose bugfixes and improvements, and how to build and test your changes to React.
 
-### [Good First Issues](https://github.com/facebook/react/labels/good%20first%20issue)
+### Good First Issues
 
-To help you get your feet wet and get you familiar with our contribution process, we have a list of [good first issues](https://github.com/facebook/react/labels/good%20first%20issue) that contain bugs that have a relatively limited scope. This is a great place to get started.
+To help you get your feet wet and get you familiar with our contribution process, we have a list of [good first issues](https://github.com/facebook/react/labels/good%20first%20issue) that contain bugs which have a relatively limited scope. This is a great place to get started.
 
 ### License
 

ReactVersions.js

@@ -1,64 +0,0 @@
-'use strict';
-
-// This module is the single source of truth for versioning packages that we
-// publish to npm.
-//
-// Packages will not be published unless they are added here.
-//
-// The @latest channel uses the version as-is, e.g.:
-//
-//   19.3.0
-//
-// The @canary channel appends additional information, with the scheme
-// <version>-<label>-<commit_sha>, e.g.:
-//
-//   19.3.0-canary-a1c2d3e4
-//
-// The @experimental channel doesn't include a version, only a date and a sha, e.g.:
-//
-//   0.0.0-experimental-241c4467e-20200129
-
-const ReactVersion = '19.3.0';
-
-// The label used by the @canary channel. Represents the upcoming release's
-// stability. Most of the time, this will be "canary", but we may temporarily
-// choose to change it to "alpha", "beta", "rc", etc.
-//
-// It only affects the label used in the version string. To customize the
-// npm dist tags used during publish, refer to .github/workflows/runtime_prereleases_*.yml.
-const canaryChannelLabel = 'canary';
-
-// If the canaryChannelLabel is "rc", the build pipeline will use this to build
-// an RC version of the packages.
-const rcNumber = 0;
-
-const stablePackages = {
-  'eslint-plugin-react-hooks': '7.1.0',
-  'jest-react': '0.18.0',
-  react: ReactVersion,
-  'react-art': ReactVersion,
-  'react-dom': ReactVersion,
-  'react-server-dom-webpack': ReactVersion,
-  'react-server-dom-turbopack': ReactVersion,
-  'react-server-dom-parcel': ReactVersion,
-  'react-is': ReactVersion,
-  'react-reconciler': '0.34.0',
-  'react-refresh': '0.19.0',
-  'react-test-renderer': ReactVersion,
-  'use-subscription': '1.13.0',
-  'use-sync-external-store': '1.7.0',
-  scheduler: '0.28.0',
-};
-
-// These packages do not exist in the @canary or @latest channel, only
-// @experimental. We don't use semver, just the commit sha, so this is just a
-// list of package names instead of a map.
-const experimentalPackages = ['react-markup'];
-
-module.exports = {
-  ReactVersion,
-  canaryChannelLabel,
-  rcNumber,
-  stablePackages,
-  experimentalPackages,
-};

SECURITY.md

@@ -1,7 +0,0 @@
-# Reporting Security Issues
-
-If you believe you have found a security vulnerability in React, we encourage you to let us know right away. We will investigate all legitimate reports and do our best to quickly fix the problem.
-
-Please refer to the following page for our responsible disclosure policy, reward guidelines, and those things that should not be reported:
-
-https://www.facebook.com/whitehat

appveyor.yml

@@ -0,0 +1,41 @@
+image: Visual Studio 2017
+
+# Fix line endings in Windows. (runs before repo cloning)
+init:
+  - git config --global core.autocrlf input
+
+environment:
+  JAVA_HOME: C:\Program Files\Java\jdk1.8.0
+  matrix:
+    - nodejs_version: 10
+
+# Finish on first failed build
+matrix:
+  fast_finish: true
+
+platform:
+  - x64
+
+branches:
+  only:
+    - master
+
+# Disable Visual Studio build and deploy
+build: off
+deploy: off
+
+install:
+  - ps: Install-Product node $env:nodejs_version $env:platform
+  - yarn install --frozen-lockfile
+
+test_script:
+  - node --version
+  - yarn lint
+#  - yarn flow-ci
+  - yarn build
+  - yarn test
+  - yarn prettier
+
+cache:
+ - node_modules
+ - "%LOCALAPPDATA%/Yarn"

babel.config-react-compiler.js

@@ -1,19 +0,0 @@
-'use strict';
-
-/**
- * HACK: @poteto React Compiler inlines Zod in its build artifact. Zod spreads values passed to .map
- * which causes issues in @babel/plugin-transform-spread in loose mode, as it will result in
- * {undefined: undefined} which fails to parse.
- *
- * [@babel/plugin-transform-block-scoping', {throwIfClosureRequired: true}] also causes issues with
- * the built version of the compiler. The minimal set of plugins needed for this file is reexported
- * from babel.config-ts.
- *
- * I will remove this hack later when we move eslint-plugin-react-hooks into the compiler directory.
- **/
-
-const baseConfig = require('./babel.config-ts');
-
-module.exports = {
-  plugins: baseConfig.plugins,
-};

babel.config-ts.js

@@ -1,18 +0,0 @@
-/**
- * This file is purely being used for local jest runs, and doesn't participate in the build process.
- */
-'use strict';
-
-module.exports = {
-  plugins: [
-    '@babel/plugin-syntax-jsx',
-    '@babel/plugin-transform-flow-strip-types',
-    ['@babel/plugin-transform-class-properties', {loose: true}],
-    ['@babel/plugin-transform-private-methods', {loose: true}],
-    '@babel/plugin-transform-classes',
-  ],
-  presets: [
-    ['@babel/preset-env', {targets: {node: 'current'}}],
-    '@babel/preset-typescript',
-  ],
-};

babel.config.js

@@ -1,26 +0,0 @@
-'use strict';
-
-module.exports = {
-  plugins: [
-    '@babel/plugin-syntax-jsx',
-    '@babel/plugin-transform-flow-strip-types',
-    ['@babel/plugin-proposal-class-properties', {loose: true}],
-    'syntax-trailing-function-commas',
-    [
-      '@babel/plugin-proposal-object-rest-spread',
-      {loose: true, useBuiltIns: true},
-    ],
-    ['@babel/plugin-transform-template-literals', {loose: true}],
-    '@babel/plugin-transform-literals',
-    '@babel/plugin-transform-arrow-functions',
-    '@babel/plugin-transform-block-scoped-functions',
-    '@babel/plugin-transform-object-super',
-    '@babel/plugin-transform-shorthand-properties',
-    '@babel/plugin-transform-computed-properties',
-    '@babel/plugin-transform-for-of',
-    ['@babel/plugin-transform-spread', {loose: true, useBuiltIns: true}],
-    '@babel/plugin-transform-parameters',
-    ['@babel/plugin-transform-destructuring', {loose: true, useBuiltIns: true}],
-    ['@babel/plugin-transform-block-scoping', {throwIfClosureRequired: true}],
-  ],
-};

compiler/.claude/settings.local.json

@@ -1,9 +0,0 @@
-{
-  "permissions": {
-    "allow": [
-      "Bash(node scripts/enable-feature-flag.js:*)"
-    ],
-    "deny": [],
-    "ask": []
-  }
-}

compiler/.eslintrc.js

@@ -1,106 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-/**
- * Our philosophy for linting is that lints should be very high-signal:
- * - Error, don't warn. If it's worth mentioning it's worth fixing.
- * - Enable rules that consistently identify real problems. If we frequently would have to
- *   disable the rule due to false positives, it isn't high-signal.
- * - Enable rules that help improve consistent style (to avoid code review about style rather
- *   than substance).
- */
-module.exports = {
-  extends: ["eslint:recommended", "plugin:@typescript-eslint/recommended"],
-  rules: {
-    /*
-     * We prefer using const where variables are not reassigned, but occassional mistakes
-     * aren't a major issue
-     */
-    "prefer-const": "off",
-
-    // Not valuable enough to enable
-    "no-useless-escape": "off",
-
-    /*
-     * There are valid use cases for loops with constant conditions where the body contains the
-     * break
-     */
-    "no-constant-condition": "off",
-
-    // eslint only knows about builtin control flow (eg throw, return, break) and not custom ones
-    // like invariant.
-    "no-fallthrough": "off",
-
-    /*
-     * Low-value: this fires even for declarations that capture references which wouldn't be as
-     * obvious if the declaration was lifted to the parent root
-     */
-    "no-inner-declarations": "off",
-
-    "multiline-comment-style": ["error", "starred-block"],
-
-    /**
-     * We sometimes need to check for control characters in regexes for things like preserving input
-     * strings
-     */
-    "no-control-regex": "off",
-
-    "@typescript-eslint/no-empty-function": "off",
-
-    /*
-     * Explicitly casting to/through any is sometimes required, often for error messages to
-     * assertExhaustive()
-     */
-    "@typescript-eslint/no-explicit-any": "off",
-
-    /*
-     * We use non-null assertions carefully. Ideally, there would be a TS option to codegen
-     * a non-null check at the assertion site.
-     */
-    "@typescript-eslint/no-non-null-assertion": "off",
-
-    // Being explicit provides value in cases where inference may later change
-    "@typescript-eslint/no-inferrable-types": "off",
-    "@typescript-eslint/explicit-function-return-type": "error",
-
-    /*
-     * Unused variables are frequently a bug. Prefix unused variables with an _ to fix, but note
-     * that eslint won't warn you that an underscore prefixed variable is used and that the prefix
-     * should be dropped.
-     */
-    "@typescript-eslint/no-unused-vars": [
-      "error",
-      {
-        argsIgnorePattern: "^_",
-        varsIgnorePattern: "^_",
-        caughtErrorsIgnorePattern: "^_",
-      },
-    ],
-
-    // Consider enabling for consistency. Ideally violations could be auto-fixed.
-    "@typescript-eslint/consistent-generic-constructors": [
-      "off",
-      "constructor",
-    ],
-    "@typescript-eslint/array-type": ["error", { default: "generic" }],
-    "@typescript-eslint/triple-slash-reference": "off",
-    "@typescript-eslint/no-var-requires": "off",
-  },
-  parser: "@typescript-eslint/parser",
-  plugins: ["@typescript-eslint"],
-  root: true,
-  ignorePatterns: ["**/__tests__/**/*", "**/*.d.ts", "**/dist/**/*"],
-  env: {
-    node: true,
-  },
-  /*
-   * If rules need to be disabled then the rule is insufficiently high signal
-   * and should be diasbled altogether or customized (in either case via a standalone PR)
-   */
-  noInlineConfig: true,
-  reportUnusedDisableDirectives: true,
-};

compiler/.gitignore

@@ -1,14 +0,0 @@
-.DS_Store
-.spr.yml
-
-node_modules
-.watchmanconfig
-.watchman-cookie-*
-dist
-.vscode
-!packages/playground/.vscode
-testfilter.txt
-
-# forgive
-*.vsix
-.vscode-test

compiler/CHANGELOG.md

@@ -1,65 +0,0 @@
-## 19.1.0-rc.2 (May 14, 2025)
-
-## babel-plugin-react-compiler
-
-* Fix for string attribute values with emoji [#33096](https://github.com/facebook/react/pull/33096) by [@josephsavona](https://github.com/josephsavona)
-
-## 19.1.0-rc.1 (April 21, 2025)
-
-## eslint-plugin-react-hooks
-* Temporarily disable ref access in render validation [#32839](https://github.com/facebook/react/pull/32839) by [@poteto](https://github.com/poteto)
-* Fix type error with recommended config [#32666](https://github.com/facebook/react/pull/32666) by [@niklasholm](https://github.com/niklasholm)
-* Merge rule from eslint-plugin-react-compiler into `react-hooks` plugin [#32416](https://github.com/facebook/react/pull/32416) by [@michaelfaith](https://github.com/michaelfaith)
-* Add dev dependencies for typescript migration [#32279](https://github.com/facebook/react/pull/32279) by [@michaelfaith](https://github.com/michaelfaith)
-* Support v9 context api [#32045](https://github.com/facebook/react/pull/32045) by [@michaelfaith](https://github.com/michaelfaith)
-* Support eslint 8+ flat plugin syntax out of the box for eslint-plugin-react-compiler [#32120](https://github.com/facebook/react/pull/32120) by [@orta](https://github.com/orta)
-
-## babel-plugin-react-compiler
-* Support satisfies operator [#32742](https://github.com/facebook/react/pull/32742) by [@rodrigofariow](https://github.com/rodrigofariow)
-* Fix inferEffectDependencies lint false positives [#32769](https://github.com/facebook/react/pull/32769) by [@mofeiZ](https://github.com/mofeiZ)
-* Fix hoisting of let declarations [#32724](https://github.com/facebook/react/pull/32724) by [@mofeiZ](https://github.com/mofeiZ)
-* Avoid failing builds when import specifiers conflict or shadow vars [#32663](https://github.com/facebook/react/pull/32663) by [@mofeiZ](https://github.com/mofeiZ)
-* Optimize components declared with arrow function and implicit return and `compilationMode: 'infer'` [#31792](https://github.com/facebook/react/pull/31792) by [@dimaMachina](https://github.com/dimaMachina)
-* Validate static components [#32683](https://github.com/facebook/react/pull/32683) by [@josephsavona](https://github.com/josephsavona)
-* Hoist dependencies from functions more conservatively [#32616](https://github.com/facebook/react/pull/32616) by [@mofeiZ](https://github.com/mofeiZ)
-* Implement NumericLiteral as ObjectPropertyKey [#31791](https://github.com/facebook/react/pull/31791) by [@dimaMachina](https://github.com/dimaMachina)
-* Avoid bailouts when inserting gating [#32598](https://github.com/facebook/react/pull/32598) by [@mofeiZ](https://github.com/mofeiZ)
-* Stop bailing out early for hoisted gated functions [#32597](https://github.com/facebook/react/pull/32597) by [@mofeiZ](https://github.com/mofeiZ)
-* Add shape for Array.from [#32522](https://github.com/facebook/react/pull/32522) by [@mofeiZ](https://github.com/mofeiZ)
-* Patch array and argument spread mutability [#32521](https://github.com/facebook/react/pull/32521) by [@mofeiZ](https://github.com/mofeiZ)
-* Make CompilerError compatible with reflection [#32539](https://github.com/facebook/react/pull/32539) by [@poteto](https://github.com/poteto)
-* Add simple walltime measurement [#32331](https://github.com/facebook/react/pull/32331) by [@poteto](https://github.com/poteto)
-* Improve error messages for unhandled terminal and instruction kinds [#32324](https://github.com/facebook/react/pull/32324) by [@inottn](https://github.com/inottn)
-* Handle TSInstantiationExpression in lowerExpression [#32302](https://github.com/facebook/react/pull/32302) by [@inottn](https://github.com/inottn)
-* Fix invalid Array.map type [#32095](https://github.com/facebook/react/pull/32095) by [@mofeiZ](https://github.com/mofeiZ)
-* Patch for JSX escape sequences in @babel/generator [#32131](https://github.com/facebook/react/pull/32131) by [@mofeiZ](https://github.com/mofeiZ)
-* `JSXText` emits incorrect with bracket [#32138](https://github.com/facebook/react/pull/32138) by [@himself65](https://github.com/himself65)
-* Validation against calling impure functions [#31960](https://github.com/facebook/react/pull/31960) by [@josephsavona](https://github.com/josephsavona)
-* Always target node [#32091](https://github.com/facebook/react/pull/32091) by [@poteto](https://github.com/poteto)
-* Patch compilationMode:infer object method edge case [#32055](https://github.com/facebook/react/pull/32055) by [@mofeiZ](https://github.com/mofeiZ)
-* Generate ts defs [#31994](https://github.com/facebook/react/pull/31994) by [@poteto](https://github.com/poteto)
-* Relax react peer dep requirement [#31915](https://github.com/facebook/react/pull/31915) by [@poteto](https://github.com/poteto)
-* Allow type cast expressions with refs [#31871](https://github.com/facebook/react/pull/31871) by [@josephsavona](https://github.com/josephsavona)
-* Add shape for global Object.keys [#31583](https://github.com/facebook/react/pull/31583) by [@mofeiZ](https://github.com/mofeiZ)
-* Optimize method calls w props receiver [#31775](https://github.com/facebook/react/pull/31775) by [@josephsavona](https://github.com/josephsavona)
-* Fix dropped ref with spread props in InlineJsxTransform [#31726](https://github.com/facebook/react/pull/31726) by [@jackpope](https://github.com/jackpope)
-* Support for non-declatation for in/of iterators [#31710](https://github.com/facebook/react/pull/31710) by [@mvitousek](https://github.com/mvitousek)
-* Support for context variable loop iterators [#31709](https://github.com/facebook/react/pull/31709) by [@mvitousek](https://github.com/mvitousek)
-* Replace deprecated dependency in `eslint-plugin-react-compiler` [#31629](https://github.com/facebook/react/pull/31629) by [@rakleed](https://github.com/rakleed)
-* Support enableRefAsProp in jsx transform [#31558](https://github.com/facebook/react/pull/31558) by [@jackpope](https://github.com/jackpope)
-* Fix: ref.current now correctly reactive [#31521](https://github.com/facebook/react/pull/31521) by [@mofeiZ](https://github.com/mofeiZ)
-* Outline JSX with non-jsx children [#31442](https://github.com/facebook/react/pull/31442) by [@gsathya](https://github.com/gsathya)
-* Outline jsx with duplicate attributes [#31441](https://github.com/facebook/react/pull/31441) by [@gsathya](https://github.com/gsathya)
-* Store original and new prop names [#31440](https://github.com/facebook/react/pull/31440) by [@gsathya](https://github.com/gsathya)
-* Stabilize compiler output: sort deps and decls by name [#31362](https://github.com/facebook/react/pull/31362) by [@mofeiZ](https://github.com/mofeiZ)
-* Bugfix for hoistable deps for nested functions [#31345](https://github.com/facebook/react/pull/31345) by [@mofeiZ](https://github.com/mofeiZ)
-* Remove compiler runtime-compat fixture library [#31430](https://github.com/facebook/react/pull/31430) by [@poteto](https://github.com/poteto)
-* Wrap inline jsx transform codegen in conditional [#31267](https://github.com/facebook/react/pull/31267) by [@jackpope](https://github.com/jackpope)
-* Check if local identifier is a hook when resolving globals [#31384](https://github.com/facebook/react/pull/31384) by [@poteto](https://github.com/poteto)
-* Handle member expr as computed property [#31344](https://github.com/facebook/react/pull/31344) by [@gsathya](https://github.com/gsathya)
-* Fix to ref access check to ban ref?.current [#31360](https://github.com/facebook/react/pull/31360) by [@mvitousek](https://github.com/mvitousek)
-* InlineJSXTransform transforms jsx inside function expressions [#31282](https://github.com/facebook/react/pull/31282) by [@josephsavona](https://github.com/josephsavona)
-
-## Other
-* Add shebang to banner [#32225](https://github.com/facebook/react/pull/32225) by [@Jeremy-Hibiki](https://github.com/Jeremy-Hibiki)
-* remove terser from react-compiler-runtime build [#31326](https://github.com/facebook/react/pull/31326) by [@henryqdineen](https://github.com/henryqdineen)

compiler/README.md

@@ -1,7 +0,0 @@
-# React Compiler
-
-React Compiler is a compiler that optimizes React applications, ensuring that only the minimal parts of components and hooks will re-render when state changes. The compiler also validates that components and hooks follow the Rules of React.
-
-More information about the design and architecture of the compiler are covered in the [Design Goals](./docs/DESIGN_GOALS.md).
-
-More information about developing the compiler itself is covered in the [Development Guide](./docs/DEVELOPMENT_GUIDE.md).

compiler/apps/playground/.eslintrc.json

@@ -1,3 +0,0 @@
-{
-  "extends": "next/core-web-vitals"
-}

compiler/apps/playground/.gitignore

@@ -1,46 +0,0 @@
-# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
-
-# dependencies
-/node_modules
-/.pnp
-.pnp.js
-
-# testing
-/coverage
-/test-results
-
-# next.js
-/.next/
-/out/
-/next-env.d.ts
-
-# production
-/build
-
-# misc
-.DS_Store
-*.pem
-
-# debug
-npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
-.pnpm-debug.log*
-
-# local env files
-.env*.local
-
-# vercel
-.vercel
-
-# typescript
-*.tsbuildinfo
-
-# external fonts
-public/fonts/Optimistic_Display_W_Lt.woff2
-public/fonts/Optimistic_Display_W_Md.woff2
-public/fonts/Optimistic_Display_W_Bd.woff2
-
-# vscode
-.vscode/*
-!.vscode/extensions.json

compiler/apps/playground/.vscode/extensions.json

@@ -1,3 +0,0 @@
-{
-  "recommendations": ["bradlc.vscode-tailwindcss", "heybourn.headwind"]
-}

compiler/apps/playground/README.md

@@ -1,42 +0,0 @@
-# React Compiler Playground
-
-An interactive playground to demonstrate, test, and have fun with React Compiler.
-
-## Setup
-
-```sh
-# Build React Compiler from source and install Playground dependencies.
-$ yarn
-
-# Or similarly
-$ npm install
-```
-
-## Development
-
-```sh
-# Start the local development server with
-$ yarn dev
-
-# Or
-$ npm run dev
-
-# Rerun the following (in a separate terminal window) when React Compiler
-# is changed locally to keep Playground in sync.
-$ yarn
-```
-
-## Testing
-```sh
-# Install playwright browser binaries
-$ npx playwright install --with-deps
-# Run tests
-$ yarn test
-```
-## Deployment
-
-This project has been deployed using Vercel. Vercel does the exact same thing as we would
-locally, by running `yarn` at the install step in the Playground directory to build
-React Compiler from source and [symlink](https://classic.yarnpkg.com/en/docs/cli/link) it as its dependency.
-This means that Playground is automatically deployed on every push and pull requests will reflect
-the behaviors of React Compiler of that commit.

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/01-user-output.txt

@@ -1,14 +0,0 @@
-import { c as _c } from "react/compiler-runtime";
-export default function TestComponent(t0) {
-  const $ = _c(2);
-  const { x } = t0;
-  let t1;
-  if ($[0] !== x) {
-    t1 = <Button>{x}</Button>;
-    $[0] = x;
-    $[1] = t1;
-  } else {
-    t1 = $[1];
-  }
-  return t1;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/02-default-output.txt

@@ -1,12 +0,0 @@
-import { c as _c } from "react/compiler-runtime";
-export default function MyApp() {
-  const $ = _c(1);
-  let t0;
-  if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t0 = <div>Hello World</div>;
-    $[0] = t0;
-  } else {
-    t0 = $[0];
-  }
-  return t0;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/compilationMode-all-output.txt

@@ -1,12 +0,0 @@
-import { c as _c } from "react/compiler-runtime"; // @compilationMode:"all"
-function nonReactFn() {
-  const $ = _c(1);
-  let t0;
-  if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t0 = {};
-    $[0] = t0;
-  } else {
-    t0 = $[0];
-  }
-  return t0;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/compilationMode-infer-output.txt

@@ -1,4 +0,0 @@
-// @compilationMode:"infer"
-function nonReactFn() {
-  return {};
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/default-config.txt

@@ -1,5 +0,0 @@
-import type { PluginOptions } from 
-'babel-plugin-react-compiler/dist';
-({
-  //compilationMode: "all"
-} satisfies PluginOptions);

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/disableMemoizationForDebugging-output.txt

@@ -1,14 +0,0 @@
-import { c as _c } from "react/compiler-runtime";
-export default function TestComponent(t0) {
-  const $ = _c(2);
-  const { x } = t0;
-  let t1;
-  if ($[0] !== x || true) {
-    t1 = <Button>{x}</Button>;
-    $[0] = x;
-    $[1] = t1;
-  } else {
-    t1 = $[1];
-  }
-  return t1;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/function-scope-beats-module-scope-output.txt

@@ -1,14 +0,0 @@
-function TestComponent(t0) {
-  "use memo";
-  const $ = _c(2);
-  const { x } = t0;
-  let t1;
-  if ($[0] !== x) {
-    t1 = <Button>{x}</Button>;
-    $[0] = x;
-    $[1] = t1;
-  } else {
-    t1 = $[1];
-  }
-  return t1;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/module-scope-use-memo-output.txt

@@ -1,15 +0,0 @@
-"use memo";
-import { c as _c } from "react/compiler-runtime";
-export default function TestComponent(t0) {
-  const $ = _c(2);
-  const { x } = t0;
-  let t1;
-  if ($[0] !== x) {
-    t1 = <Button>{x}</Button>;
-    $[0] = x;
-    $[1] = t1;
-  } else {
-    t1 = $[1];
-  }
-  return t1;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/module-scope-use-no-memo-output.txt

@@ -1,4 +0,0 @@
-"use no memo";
-export default function TestComponent({ x }) {
-  return <Button>{x}</Button>;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/parse-flow-output.txt

@@ -1,14 +0,0 @@
-import { c as _c } from "react/compiler-runtime";
-function useFoo(propVal) {
-  const $ = _c(2);
-  const t0 = (propVal.baz: number);
-  let t1;
-  if ($[0] !== t0) {
-    t1 = <div>{t0}</div>;
-    $[0] = t0;
-    $[1] = t1;
-  } else {
-    t1 = $[1];
-  }
-  return t1;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/parse-typescript-output.txt

@@ -1,20 +0,0 @@
-import { c as _c } from "react/compiler-runtime";
-function Foo() {
-  const $ = _c(2);
-  let t0;
-  if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t0 = foo();
-    $[0] = t0;
-  } else {
-    t0 = $[0];
-  }
-  const x = t0 as number;
-  let t1;
-  if ($[1] === Symbol.for("react.memo_cache_sentinel")) {
-    t1 = <div>{x}</div>;
-    $[1] = t1;
-  } else {
-    t1 = $[1];
-  }
-  return t1;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/todo-function-scope-does-not-beat-module-scope-output.txt

@@ -1,5 +0,0 @@
-"use no memo";
-function TestComponent({ x }) {
-  "use memo";
-  return <Button>{x}</Button>;
-}

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/use-memo-output.txt

@@ -1,29 +0,0 @@
-import { c as _c } from "react/compiler-runtime";
-function TestComponent(t0) {
-  "use memo";
-  const $ = _c(2);
-  const { x } = t0;
-  let t1;
-  if ($[0] !== x) {
-    t1 = <Button>{x}</Button>;
-    $[0] = x;
-    $[1] = t1;
-  } else {
-    t1 = $[1];
-  }
-  return t1;
-}
-const TestComponent2 = (t0) => {
-  "use memo";
-  const $ = _c(2);
-  const { x } = t0;
-  let t1;
-  if ($[0] !== x) {
-    t1 = <Button>{x}</Button>;
-    $[0] = x;
-    $[1] = t1;
-  } else {
-    t1 = $[1];
-  }
-  return t1;
-};

compiler/apps/playground/__tests__/e2e/__snapshots__/page.spec.ts/use-no-memo-output.txt

@@ -1,8 +0,0 @@
-const TestComponent = function () {
-  "use no memo";
-  return <Button>{x}</Button>;
-};
-const TestComponent2 = ({ x }) => {
-  "use no memo";
-  return <Button>{x}</Button>;
-};

compiler/apps/playground/__tests__/e2e/page.spec.ts

@@ -1,374 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import {expect, test, type Page} from '@playwright/test';
-import {encodeStore, type Store} from '../../lib/stores';
-import {defaultConfig} from '../../lib/defaultStore';
-import {format} from 'prettier';
-
-function isMonacoLoaded(): boolean {
-  return (
-    typeof window['MonacoEnvironment'] !== 'undefined' &&
-    window['__MONACO_LOADED__'] === true
-  );
-}
-
-function formatPrint(data: Array<string>): Promise<string> {
-  return format(data.join(''), {parser: 'babel'});
-}
-
-async function expandConfigs(page: Page): Promise<void> {
-  const expandButton = page.locator('[title="Expand config editor"]');
-  await expandButton.click();
-  await page.waitForSelector('.monaco-editor-config', {state: 'visible'});
-}
-
-const TEST_SOURCE = `export default function TestComponent({ x }) {
-  return <Button>{x}</Button>;
-}`;
-
-const TEST_CASE_INPUTS = [
-  {
-    name: 'module-scope-use-memo',
-    input: `
-'use memo';
-export default function TestComponent({ x }) {
-  return <Button>{x}</Button>;
-}`,
-  },
-  {
-    name: 'module-scope-use-no-memo',
-    input: `
-'use no memo';
-export default function TestComponent({ x }) {
-  return <Button>{x}</Button>;
-}`,
-  },
-  {
-    name: 'use-memo',
-    input: `
-function TestComponent({ x }) {
-  'use memo';
-  return <Button>{x}</Button>;
-}
-const TestComponent2 = ({ x }) => {
-  'use memo';
-  return <Button>{x}</Button>;
-};`,
-  },
-  {
-    name: 'use-no-memo',
-    input: `
-const TestComponent = function() {
-  'use no memo';
-  return <Button>{x}</Button>;
-};
-const TestComponent2 = ({ x }) => {
-  'use no memo';
-  return <Button>{x}</Button>;
-};`,
-  },
-  {
-    name: 'todo-function-scope-does-not-beat-module-scope',
-    input: `
-'use no memo';
-function TestComponent({ x }) {
-  'use memo';
-  return <Button>{x}</Button>;
-}`,
-  },
-  {
-    name: 'parse-typescript',
-    input: `
-function Foo() {
-  const x = foo() as number;
-  return <div>{x}</div>;
-}
-`,
-    noFormat: true,
-  },
-  {
-    name: 'parse-flow',
-    input: `
-// @flow
-function useFoo(propVal: {+baz: number}) {
-  return <div>{(propVal.baz as number)}</div>;
-}
-    `,
-    noFormat: true,
-  },
-  {
-    name: 'compilationMode-infer',
-    input: `// @compilationMode:"infer"
-function nonReactFn() {
-  return {};
-}
-    `,
-    noFormat: true,
-  },
-  {
-    name: 'compilationMode-all',
-    input: `// @compilationMode:"all"
-function nonReactFn() {
-  return {};
-}
-    `,
-    noFormat: true,
-  },
-];
-
-test('editor should open successfully', async ({page}) => {
-  await page.goto(`/`, {waitUntil: 'networkidle'});
-  await page.waitForFunction(isMonacoLoaded);
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/00-fresh-page.png',
-  });
-});
-
-test('editor should compile from hash successfully', async ({page}) => {
-  const store: Store = {
-    source: TEST_SOURCE,
-    config: defaultConfig,
-    showInternals: false,
-  };
-  const hash = encodeStore(store);
-  await page.goto(`/#${hash}`, {waitUntil: 'networkidle'});
-  await page.waitForFunction(isMonacoLoaded);
-
-  // User input from hash compiles
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/01-compiles-from-hash.png',
-  });
-  const text =
-    (await page.locator('.monaco-editor-output').allInnerTexts()) ?? [];
-  const output = await formatPrint(text);
-
-  expect(output).not.toEqual('');
-  expect(output).toMatchSnapshot('01-user-output.txt');
-});
-
-test('reset button works', async ({page}) => {
-  const store: Store = {
-    source: TEST_SOURCE,
-    config: defaultConfig,
-    showInternals: false,
-  };
-  const hash = encodeStore(store);
-  await page.goto(`/#${hash}`, {waitUntil: 'networkidle'});
-  await page.waitForFunction(isMonacoLoaded);
-
-  // Reset button works
-  page.on('dialog', dialog => dialog.accept());
-  await page.getByRole('button', {name: 'Reset'}).click();
-  await expandConfigs(page);
-
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/02-reset-button-works.png',
-  });
-  const text =
-    (await page.locator('.monaco-editor-output').allInnerTexts()) ?? [];
-  const output = await formatPrint(text);
-
-  const configText =
-    (await page.locator('.monaco-editor-config').allInnerTexts()) ?? [];
-  const configOutput = configText.join('');
-
-  expect(output).not.toEqual('');
-  expect(output).toMatchSnapshot('02-default-output.txt');
-  expect(configOutput).not.toEqual('');
-  expect(configOutput).toMatchSnapshot('default-config.txt');
-});
-
-test('defaults load when only source is in Store', async ({page}) => {
-  // Test for backwards compatibility
-  const partial = {
-    source: TEST_SOURCE,
-  };
-  const hash = encodeStore(partial as Store);
-  await page.goto(`/#${hash}`, {waitUntil: 'networkidle'});
-  await page.waitForFunction(isMonacoLoaded);
-  await expandConfigs(page);
-
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/03-missing-defaults.png',
-  });
-
-  // Config editor has default config
-  const configText =
-    (await page.locator('.monaco-editor-config').allInnerTexts()) ?? [];
-  const configOutput = configText.join('');
-
-  expect(configOutput).not.toEqual('');
-  expect(configOutput).toMatchSnapshot('default-config.txt');
-
-  const checkbox = page.locator('label.show-internals');
-  await expect(checkbox).not.toBeChecked();
-  const ssaTab = page.locator('text=SSA');
-  await expect(ssaTab).not.toBeVisible();
-});
-
-test('show internals button toggles correctly', async ({page}) => {
-  await page.goto(`/`, {waitUntil: 'networkidle'});
-  await page.waitForFunction(isMonacoLoaded);
-
-  // show internals should be off
-  const checkbox = page.locator('label.show-internals');
-  await checkbox.click();
-
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/04-show-internals-on.png',
-  });
-
-  await expect(checkbox).toBeChecked();
-
-  const ssaTab = page.locator('text=SSA');
-  await expect(ssaTab).toBeVisible();
-});
-
-test('error is displayed when config has syntax error', async ({page}) => {
-  const store: Store = {
-    source: TEST_SOURCE,
-    config: `compilationMode: `,
-    showInternals: false,
-  };
-  const hash = encodeStore(store);
-  await page.goto(`/#${hash}`, {waitUntil: 'networkidle'});
-  await page.waitForFunction(isMonacoLoaded);
-  await expandConfigs(page);
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/05-config-syntax-error.png',
-  });
-
-  const text =
-    (await page.locator('.monaco-editor-output').allInnerTexts()) ?? [];
-  const output = text.join('');
-
-  // Remove hidden chars
-  expect(output.replace(/\s+/g, ' ')).toContain('Invalid override format');
-});
-
-test('error is displayed when config has validation error', async ({page}) => {
-  const store: Store = {
-    source: TEST_SOURCE,
-    config: `import type { PluginOptions } from 'babel-plugin-react-compiler/dist';
-
-({
-  compilationMode: "123"
-} satisfies PluginOptions);`,
-    showInternals: false,
-  };
-  const hash = encodeStore(store);
-  await page.goto(`/#${hash}`, {waitUntil: 'networkidle'});
-  await page.waitForFunction(isMonacoLoaded);
-  await expandConfigs(page);
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/06-config-validation-error.png',
-  });
-
-  const text =
-    (await page.locator('.monaco-editor-output').allInnerTexts()) ?? [];
-  const output = text.join('');
-
-  expect(output.replace(/\s+/g, ' ')).toContain('Unexpected compilationMode');
-});
-
-test('disableMemoizationForDebugging flag works as expected', async ({
-  page,
-}) => {
-  const store: Store = {
-    source: TEST_SOURCE,
-    config: `import type { PluginOptions } from 'babel-plugin-react-compiler/dist';
-
-({
-  environment: {
-    disableMemoizationForDebugging: true
-  }
-} satisfies PluginOptions);`,
-    showInternals: false,
-  };
-  const hash = encodeStore(store);
-  await page.goto(`/#${hash}`, {waitUntil: 'networkidle'});
-  await page.waitForFunction(isMonacoLoaded);
-  await expandConfigs(page);
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/07-config-disableMemoizationForDebugging-flag.png',
-  });
-
-  const text =
-    (await page.locator('.monaco-editor-output').allInnerTexts()) ?? [];
-  const output = await formatPrint(text);
-
-  expect(output).not.toEqual('');
-  expect(output).toMatchSnapshot('disableMemoizationForDebugging-output.txt');
-});
-
-test('error is displayed when source has syntax error', async ({page}) => {
-  const syntaxErrorSource = `function TestComponent(props) {
-  const oops = props.
-  return (
-    <>{oops}</>
-  );
-}`;
-  const store: Store = {
-    source: syntaxErrorSource,
-    config: defaultConfig,
-    showInternals: false,
-  };
-  const hash = encodeStore(store);
-  await page.goto(`/#${hash}`);
-  await page.waitForFunction(isMonacoLoaded);
-  await expandConfigs(page);
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/08-source-syntax-error.png',
-  });
-
-  const text =
-    (await page.locator('.monaco-editor-output').allInnerTexts()) ?? [];
-  const output = text.join('');
-
-  expect(output.replace(/\s+/g, ' ')).toContain(
-    'Expected identifier to be defined before being used',
-  );
-});
-
-TEST_CASE_INPUTS.forEach((t, idx) =>
-  test(`playground compiles: ${t.name}`, async ({page}) => {
-    const store: Store = {
-      source: t.input,
-      config: defaultConfig,
-      showInternals: false,
-    };
-    const hash = encodeStore(store);
-    await page.goto(`/#${hash}`, {waitUntil: 'networkidle'});
-    await page.waitForFunction(isMonacoLoaded);
-    await page.screenshot({
-      fullPage: true,
-      path: `test-results/08-0${idx}-${t.name}.png`,
-    });
-
-    const text =
-      (await page.locator('.monaco-editor-output').allInnerTexts()) ?? [];
-    let output: string;
-    if (t.noFormat) {
-      output = text.join('');
-    } else {
-      output = await formatPrint(text);
-    }
-
-    expect(output).not.toEqual('');
-    expect(output).toMatchSnapshot(`${t.name}-output.txt`);
-  }),
-);

compiler/apps/playground/app/layout.tsx

@@ -1,47 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import '../styles/globals.css';
-
-export default function RootLayout({
-  children,
-}: {
-  children: React.ReactNode;
-}): JSX.Element {
-  'use no memo';
-  return (
-    <html lang="en">
-      <head>
-        <title>
-          {process.env.NODE_ENV === 'development'
-            ? '[DEV] React Compiler Playground'
-            : 'React Compiler Playground'}
-        </title>
-        <meta
-          name="viewport"
-          content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=0"></meta>
-        <link rel="icon" href="/favicon.ico" />
-        <link rel="manifest" href="/site.webmanifest" />
-        <link
-          rel="preload"
-          href="/fonts/Source-Code-Pro-Regular.woff2"
-          as="font"
-          type="font/woff2"
-          crossOrigin="anonymous"
-        />
-        <link
-          rel="preload"
-          href="/fonts/Optimistic_Display_W_Lt.woff2"
-          as="font"
-          type="font/woff2"
-          crossOrigin="anonymous"
-        />
-      </head>
-      <body className="font-sans h-screen overflow-y-hidden">{children}</body>
-    </html>
-  );
-}

compiler/apps/playground/app/page.tsx

@@ -1,26 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-'use client';
-
-import {SnackbarProvider} from 'notistack';
-import {Editor, Header, StoreProvider} from '../components';
-import MessageSnackbar from '../components/Message';
-
-export default function Page(): JSX.Element {
-  return (
-    <StoreProvider>
-      <SnackbarProvider
-        preventDuplicate
-        maxSnack={10}
-        Components={{message: MessageSnackbar}}>
-        <Header />
-        <Editor />
-      </SnackbarProvider>
-    </StoreProvider>
-  );
-}

compiler/apps/playground/colors.js

@@ -1,96 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-/**
- * Sync from <https://github.com/reactjs/reactjs.org/blob/main/beta/colors.js>.
- */
-
-module.exports = {
-  // Text colors
-  primary: '#23272F', // gray-90
-  'primary-dark': '#F6F7F9', // gray-5
-  secondary: '#404756', // gray-70
-  'secondary-dark': '#EBECF0', // gray-10
-  link: '#087EA4', // blue-50
-  'link-dark': '#149ECA', // blue-40
-  syntax: '#EBECF0', // gray-10
-  wash: '#FFFFFF',
-  'wash-dark': '#23272F', // gray-90
-  card: '#F6F7F9', // gray-05
-  'card-dark': '#343A46', // gray-80
-  highlight: '#E6F7FF', // blue-10
-  'highlight-dark': 'rgba(88,175,223,.1)',
-  border: '#EBECF0', // gray-10
-  'border-dark': '#343A46', // gray-80
-  'secondary-button': '#EBECF0', // gray-10
-  'secondary-button-dark': '#404756', // gray-70
-
-  // Gray
-  'gray-95': '#16181D',
-  'gray-90': '#23272F',
-  'gray-80': '#343A46',
-  'gray-70': '#404756',
-  'gray-60': '#4E5769',
-  'gray-50': '#5E687E', // unused
-  'gray-40': '#78839B',
-  'gray-30': '#99A1B3',
-  'gray-20': '#BCC1CD',
-  'gray-10': '#EBECF0',
-  'gray-5': '#F6F7F9',
-
-  // Blue
-  'blue-60': '#045975',
-  'blue-50': '#087EA4',
-  'blue-40': '#149ECA', // Brand Blue
-  'blue-30': '#58C4DC', // unused
-  'blue-20': '#ABE2ED',
-  'blue-10': '#E6F7FF', // todo: doesn't match illustrations
-  'blue-5': '#E6F6FA',
-
-  // Yellow
-  'yellow-60': '#B65700',
-  'yellow-50': '#C76A15',
-  'yellow-40': '#DB7D27', // unused
-  'yellow-30': '#FABD62', // unused
-  'yellow-20': '#FCDEB0', // unused
-  'yellow-10': '#FDE7C7',
-  'yellow-5': '#FEF5E7',
-
-  // Purple
-  'purple-60': '#2B3491', // unused
-  'purple-50': '#575FB7',
-  'purple-40': '#6B75DB',
-  'purple-30': '#8891EC',
-  'purple-20': '#C3C8F5', // unused
-  'purple-10': '#E7E9FB',
-  'purple-5': '#F3F4FD',
-
-  // Green
-  'green-60': '#2B6E62',
-  'green-50': '#388F7F',
-  'green-40': '#44AC99',
-  'green-30': '#7FCCBF',
-  'green-20': '#ABDED5',
-  'green-10': '#E5F5F2',
-  'green-5': '#F4FBF9',
-
-  // RED
-  'red-60': '#712D28',
-  'red-50': '#A6423A', // unused
-  'red-40': '#C1554D',
-  'red-30': '#D07D77',
-  'red-20': '#E5B7B3', // unused
-  'red-10': '#F2DBD9', // unused
-  'red-5': '#FAF1F0',
-
-  // MISC
-  'code-block': '#99a1b30f', // gray-30 @ 6%
-  'gradient-blue': '#58C4DC', // Only used for the landing gradient for now.
-  github: {
-    highlight: '#fffbdd',
-  },
-};

compiler/apps/playground/components/AccordionWindow.tsx

@@ -1,126 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import {Resizable} from 're-resizable';
-import React, {
-  useId,
-  unstable_ViewTransition as ViewTransition,
-  unstable_addTransitionType as addTransitionType,
-  startTransition,
-} from 'react';
-import {EXPAND_ACCORDION_TRANSITION} from '../lib/transitionTypes';
-
-type TabsRecord = Map<string, React.ReactNode>;
-
-export default function AccordionWindow(props: {
-  defaultTab: string | null;
-  tabs: TabsRecord;
-  tabsOpen: Set<string>;
-  setTabsOpen: (newTab: Set<string>) => void;
-  changedPasses: Set<string>;
-}): React.ReactElement {
-  return (
-    <div className="flex-1 min-w-[550px] sm:min-w-0">
-      <div className="flex flex-row h-full">
-        {Array.from(props.tabs.keys()).map(name => {
-          return (
-            <AccordionWindowItem
-              name={name}
-              key={name}
-              tabs={props.tabs}
-              tabsOpen={props.tabsOpen}
-              setTabsOpen={props.setTabsOpen}
-              hasChanged={props.changedPasses.has(name)}
-            />
-          );
-        })}
-      </div>
-    </div>
-  );
-}
-
-function AccordionWindowItem({
-  name,
-  tabs,
-  tabsOpen,
-  setTabsOpen,
-  hasChanged,
-}: {
-  name: string;
-  tabs: TabsRecord;
-  tabsOpen: Set<string>;
-  setTabsOpen: (newTab: Set<string>) => void;
-  hasChanged: boolean;
-  isFailure: boolean;
-}): React.ReactElement {
-  const id = useId();
-  const isShow = tabsOpen.has(name);
-
-  const transitionName = `accordion-window-item-${id}`;
-
-  const toggleTabs = (): void => {
-    startTransition(() => {
-      addTransitionType(EXPAND_ACCORDION_TRANSITION);
-      const nextState = new Set(tabsOpen);
-      if (nextState.has(name)) {
-        nextState.delete(name);
-      } else {
-        nextState.add(name);
-      }
-      setTabsOpen(nextState);
-    });
-  };
-
-  // Replace spaces with non-breaking spaces
-  const displayName = name.replace(/ /g, '\u00A0');
-
-  return (
-    <div key={name} className="flex flex-row">
-      {isShow ? (
-        <ViewTransition
-          name={transitionName}
-          update={{
-            [EXPAND_ACCORDION_TRANSITION]: 'expand-accordion',
-            default: 'none',
-          }}>
-          <Resizable className="border-r" minWidth={550} enable={{right: true}}>
-            <h2
-              title="Minimize tab"
-              aria-label="Minimize tab"
-              onClick={toggleTabs}
-              className={`p-4 duration-150 ease-in border-b cursor-pointer border-grey-200 ${
-                hasChanged ? 'font-bold' : 'font-light'
-              } text-secondary hover:text-link`}>
-              - {displayName}
-            </h2>
-            {tabs.get(name) ?? <div>No output for {name}</div>}
-          </Resizable>
-        </ViewTransition>
-      ) : (
-        <ViewTransition
-          name={transitionName}
-          update={{
-            [EXPAND_ACCORDION_TRANSITION]: 'expand-accordion',
-            default: 'none',
-          }}>
-          <div className="relative items-center h-full px-1 py-6 align-middle border-r border-grey-200">
-            <button
-              title={`Expand compiler tab: ${name}`}
-              aria-label={`Expand compiler tab: ${name}`}
-              style={{transform: 'rotate(90deg) translate(-50%)'}}
-              onClick={toggleTabs}
-              className={`flex-grow-0 w-5 transition-colors duration-150 ease-in ${
-                hasChanged ? 'font-bold' : 'font-light'
-              } text-secondary hover:text-link`}>
-              {displayName}
-            </button>
-          </div>
-        </ViewTransition>
-      )}
-    </div>
-  );
-}

compiler/apps/playground/components/Editor/ConfigEditor.tsx

@@ -1,221 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import MonacoEditor, {loader, type Monaco} from '@monaco-editor/react';
-import type {editor} from 'monaco-editor';
-import * as monaco from 'monaco-editor';
-import React, {
-  useState,
-  useRef,
-  unstable_ViewTransition as ViewTransition,
-  unstable_addTransitionType as addTransitionType,
-  startTransition,
-} from 'react';
-import {Resizable} from 're-resizable';
-import {useStore, useStoreDispatch} from '../StoreContext';
-import {monacoConfigOptions} from './monacoOptions';
-import {IconChevron} from '../Icons/IconChevron';
-import {CONFIG_PANEL_TRANSITION} from '../../lib/transitionTypes';
-
-// @ts-expect-error - webpack asset/source loader handles .d.ts files as strings
-import compilerTypeDefs from 'babel-plugin-react-compiler/dist/index.d.ts';
-
-loader.config({monaco});
-
-export default function ConfigEditor({
-  formattedAppliedConfig,
-}: {
-  formattedAppliedConfig: string;
-}): React.ReactElement {
-  const [isExpanded, setIsExpanded] = useState(false);
-
-  // TODO: Add back <Activity> after upgrading next.js
-  return (
-    <>
-      <div
-        style={{
-          display: isExpanded ? 'block' : 'none',
-        }}>
-        {/* <Activity mode={isExpanded ? 'visible' : 'hidden'}> */}
-        <ExpandedEditor
-          onToggle={() => {
-            startTransition(() => {
-              addTransitionType(CONFIG_PANEL_TRANSITION);
-              setIsExpanded(false);
-            });
-          }}
-          formattedAppliedConfig={formattedAppliedConfig}
-        />
-      </div>
-      <div
-        style={{
-          display: !isExpanded ? 'block' : 'none',
-        }}>
-        {/* </Activity>
-        <Activity mode={isExpanded ? 'hidden' : 'visible'}></Activity> */}
-        <CollapsedEditor
-          onToggle={() => {
-            startTransition(() => {
-              addTransitionType(CONFIG_PANEL_TRANSITION);
-              setIsExpanded(true);
-            });
-          }}
-        />
-      </div>
-      {/* </Activity> */}
-    </>
-  );
-}
-
-function ExpandedEditor({
-  onToggle,
-  formattedAppliedConfig,
-}: {
-  onToggle: (expanded: boolean) => void;
-  formattedAppliedConfig: string;
-}): React.ReactElement {
-  const store = useStore();
-  const dispatchStore = useStoreDispatch();
-  const debounceTimerRef = useRef<NodeJS.Timeout | null>(null);
-
-  const handleChange: (value: string | undefined) => void = (
-    value: string | undefined,
-  ) => {
-    if (value === undefined) return;
-
-    if (debounceTimerRef.current) {
-      clearTimeout(debounceTimerRef.current);
-    }
-
-    debounceTimerRef.current = setTimeout(() => {
-      dispatchStore({
-        type: 'updateConfig',
-        payload: {
-          config: value,
-        },
-      });
-    }, 500); // 500ms debounce delay
-  };
-
-  const handleMount: (
-    _: editor.IStandaloneCodeEditor,
-    monaco: Monaco,
-  ) => void = (_, monaco) => {
-    // Add the babel-plugin-react-compiler type definitions to Monaco
-    monaco.languages.typescript.typescriptDefaults.addExtraLib(
-      //@ts-expect-error - compilerTypeDefs is a string
-      compilerTypeDefs,
-      'file:///node_modules/babel-plugin-react-compiler/dist/index.d.ts',
-    );
-    monaco.languages.typescript.typescriptDefaults.setCompilerOptions({
-      target: monaco.languages.typescript.ScriptTarget.Latest,
-      allowNonTsExtensions: true,
-      moduleResolution: monaco.languages.typescript.ModuleResolutionKind.NodeJs,
-      module: monaco.languages.typescript.ModuleKind.ESNext,
-      noEmit: true,
-      strict: false,
-      esModuleInterop: true,
-      allowSyntheticDefaultImports: true,
-      jsx: monaco.languages.typescript.JsxEmit.React,
-    });
-  };
-
-  return (
-    <ViewTransition
-      update={{[CONFIG_PANEL_TRANSITION]: 'slide-in', default: 'none'}}>
-      {/* enter={{[CONFIG_PANEL_TRANSITION]: 'slide-in', default: 'none'}}
-      exit={{[CONFIG_PANEL_TRANSITION]: 'slide-out', default: 'none'}}> */}
-      <Resizable
-        minWidth={300}
-        maxWidth={600}
-        defaultSize={{width: 350}}
-        enable={{right: true, bottom: false}}>
-        <div className="bg-blue-10 relative h-full flex flex-col !h-[calc(100vh_-_3.5rem)] border border-gray-300">
-          <div
-            className="absolute w-8 h-16 bg-blue-10 rounded-r-full flex items-center justify-center z-[2] cursor-pointer border border-l-0 border-gray-300"
-            title="Minimize config editor"
-            onClick={onToggle}
-            style={{
-              top: '50%',
-              marginTop: '-32px',
-              right: '-32px',
-              borderTopLeftRadius: 0,
-              borderBottomLeftRadius: 0,
-            }}>
-            <IconChevron displayDirection="left" className="text-blue-50" />
-          </div>
-
-          <div className="flex-1 flex flex-col m-2 mb-2">
-            <div className="pb-2">
-              <h2 className="inline-block text-blue-50 py-1.5 px-1.5 xs:px-3 sm:px-4 text-sm">
-                Config Overrides
-              </h2>
-            </div>
-            <div className="flex-1 border border-gray-300">
-              <MonacoEditor
-                path={'config.ts'}
-                language={'typescript'}
-                value={store.config}
-                onMount={handleMount}
-                onChange={handleChange}
-                loading={''}
-                className="monaco-editor-config"
-                options={monacoConfigOptions}
-              />
-            </div>
-          </div>
-          <div className="flex-1 flex flex-col m-2">
-            <div className="pb-2">
-              <h2 className="inline-block text-blue-50 py-1.5 px-1.5 xs:px-3 sm:px-4 text-sm">
-                Applied Configs
-              </h2>
-            </div>
-            <div className="flex-1 border border-gray-300">
-              <MonacoEditor
-                path={'applied-config.js'}
-                language={'javascript'}
-                value={formattedAppliedConfig}
-                loading={''}
-                className="monaco-editor-applied-config"
-                options={{
-                  ...monacoConfigOptions,
-                  readOnly: true,
-                }}
-              />
-            </div>
-          </div>
-        </div>
-      </Resizable>
-    </ViewTransition>
-  );
-}
-
-function CollapsedEditor({
-  onToggle,
-}: {
-  onToggle: () => void;
-}): React.ReactElement {
-  return (
-    <div
-      className="w-4 !h-[calc(100vh_-_3.5rem)]"
-      style={{position: 'relative'}}>
-      <div
-        className="absolute w-10 h-16 bg-blue-10 hover:translate-x-2 transition-transform rounded-r-full flex items-center justify-center z-[2] cursor-pointer border border-gray-300"
-        title="Expand config editor"
-        onClick={onToggle}
-        style={{
-          top: '50%',
-          marginTop: '-32px',
-          left: '-8px',
-          borderTopLeftRadius: 0,
-          borderBottomLeftRadius: 0,
-        }}>
-        <IconChevron displayDirection="right" className="text-blue-50" />
-      </div>
-    </div>
-  );
-}

compiler/apps/playground/components/Editor/EditorImpl.tsx

@@ -1,69 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import {
-  CompilerErrorDetail,
-  CompilerDiagnostic,
-} from 'babel-plugin-react-compiler';
-import {useDeferredValue, useMemo, useState} from 'react';
-import {useStore} from '../StoreContext';
-import ConfigEditor from './ConfigEditor';
-import Input from './Input';
-import {CompilerOutput, default as Output} from './Output';
-import {compile} from '../../lib/compilation';
-import prettyFormat from 'pretty-format';
-
-export default function Editor(): JSX.Element {
-  const store = useStore();
-  const deferredStore = useDeferredValue(store);
-  const [compilerOutput, language, appliedOptions] = useMemo(
-    () => compile(deferredStore.source, 'compiler', deferredStore.config),
-    [deferredStore.source, deferredStore.config],
-  );
-  const [linterOutput] = useMemo(
-    () => compile(deferredStore.source, 'linter', deferredStore.config),
-    [deferredStore.source, deferredStore.config],
-  );
-  const [formattedAppliedConfig, setFormattedAppliedConfig] = useState('');
-
-  let mergedOutput: CompilerOutput;
-  let errors: Array<CompilerErrorDetail | CompilerDiagnostic>;
-  if (compilerOutput.kind === 'ok') {
-    errors = linterOutput.kind === 'ok' ? [] : linterOutput.error.details;
-    mergedOutput = {
-      ...compilerOutput,
-      errors,
-    };
-  } else {
-    mergedOutput = compilerOutput;
-    errors = compilerOutput.error.details;
-  }
-
-  if (appliedOptions) {
-    const formatted = prettyFormat(appliedOptions, {
-      printFunctionName: false,
-      printBasicPrototype: false,
-    });
-    if (formatted !== formattedAppliedConfig) {
-      setFormattedAppliedConfig(formatted);
-    }
-  }
-
-  return (
-    <>
-      <div className="relative flex top-14">
-        <div className="flex-shrink-0">
-          <ConfigEditor formattedAppliedConfig={formattedAppliedConfig} />
-        </div>
-        <div className="flex flex-1 min-w-0">
-          <Input language={language} errors={errors} />
-          <Output store={deferredStore} compilerOutput={mergedOutput} />
-        </div>
-      </div>
-    </>
-  );
-}

compiler/apps/playground/components/Editor/Input.tsx

@@ -1,180 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import MonacoEditor, {loader, type Monaco} from '@monaco-editor/react';
-import {
-  CompilerErrorDetail,
-  CompilerDiagnostic,
-} from 'babel-plugin-react-compiler';
-import invariant from 'invariant';
-import type {editor} from 'monaco-editor';
-import * as monaco from 'monaco-editor';
-import {
-  useEffect,
-  useState,
-  unstable_ViewTransition as ViewTransition,
-} from 'react';
-import {renderReactCompilerMarkers} from '../../lib/reactCompilerMonacoDiagnostics';
-import {useStore, useStoreDispatch} from '../StoreContext';
-import TabbedWindow from '../TabbedWindow';
-import {monacoOptions} from './monacoOptions';
-import {CONFIG_PANEL_TRANSITION} from '../../lib/transitionTypes';
-
-// @ts-expect-error TODO: Make TS recognize .d.ts files, in addition to loading them with webpack.
-import React$Types from '../../node_modules/@types/react/index.d.ts';
-
-loader.config({monaco});
-
-type Props = {
-  errors: Array<CompilerErrorDetail | CompilerDiagnostic>;
-  language: 'flow' | 'typescript';
-};
-
-export default function Input({errors, language}: Props): JSX.Element {
-  const [monaco, setMonaco] = useState<Monaco | null>(null);
-  const store = useStore();
-  const dispatchStore = useStoreDispatch();
-
-  // Set tab width to 2 spaces for the selected input file.
-  useEffect(() => {
-    if (!monaco) return;
-    const uri = monaco.Uri.parse(`file:///index.js`);
-    const model = monaco.editor.getModel(uri);
-    invariant(model, 'Model must exist for the selected input file.');
-    renderReactCompilerMarkers({
-      monaco,
-      model,
-      details: errors,
-      source: store.source,
-    });
-  }, [monaco, errors, store.source]);
-
-  useEffect(() => {
-    /**
-     * Ignore "can only be used in TypeScript files." errors, since
-     * we want to support syntax highlighting for Flow (*.js) files
-     * and Flow is not a built-in language.
-     */
-    if (!monaco) return;
-    monaco.languages.typescript.javascriptDefaults.setDiagnosticsOptions({
-      diagnosticCodesToIgnore: [
-        8002,
-        8003,
-        8004,
-        8005,
-        8006,
-        8008,
-        8009,
-        8010,
-        8011,
-        8012,
-        8013,
-        ...(language === 'flow'
-          ? [7028 /* unused label */, 6133 /* var declared but not read */]
-          : []),
-      ],
-      noSemanticValidation: true,
-      // Monaco can't validate Flow component syntax
-      noSyntaxValidation: language === 'flow',
-    });
-  }, [monaco, language]);
-
-  const handleChange: (value: string | undefined) => void = async value => {
-    if (!value) return;
-
-    dispatchStore({
-      type: 'updateSource',
-      payload: {
-        source: value,
-      },
-    });
-  };
-
-  const handleMount: (
-    _: editor.IStandaloneCodeEditor,
-    monaco: Monaco,
-  ) => void = (_, monaco) => {
-    if (typeof window !== 'undefined') {
-      window['__MONACO_LOADED__'] = true;
-    }
-    setMonaco(monaco);
-
-    const tscOptions = {
-      allowNonTsExtensions: true,
-      target: monaco.languages.typescript.ScriptTarget.ES2015,
-      moduleResolution: monaco.languages.typescript.ModuleResolutionKind.NodeJs,
-      jsx: monaco.languages.typescript.JsxEmit.Preserve,
-      typeRoots: ['node_modules/@types'],
-      allowSyntheticDefaultImports: true,
-    };
-    monaco.languages.typescript.javascriptDefaults.setCompilerOptions(
-      tscOptions,
-    );
-    monaco.languages.typescript.typescriptDefaults.setCompilerOptions({
-      ...tscOptions,
-      checkJs: true,
-      allowJs: true,
-    });
-
-    // Add React type declarations to Monaco
-    const reactLib = [
-      React$Types,
-      'file:///node_modules/@types/react/index.d.ts',
-    ] as [any, string];
-    monaco.languages.typescript.javascriptDefaults.addExtraLib(...reactLib);
-    monaco.languages.typescript.typescriptDefaults.addExtraLib(...reactLib);
-
-    /**
-     * Remeasure the font in case the custom font is loaded only after
-     * Monaco Editor is mounted.
-     * N.B. that this applies also to the output editor as it seems
-     * Monaco Editor instances share the same font config.
-     */
-    document.fonts.ready.then(() => {
-      monaco.editor.remeasureFonts();
-    });
-  };
-
-  const editorContent = (
-    <MonacoEditor
-      path={'index.js'}
-      /**
-       * .js and .jsx files are specified to be TS so that Monaco can actually
-       * check their syntax using its TS language service. They are still JS files
-       * due to their extensions, so TS language features don't work.
-       */
-      language={'javascript'}
-      value={store.source}
-      onMount={handleMount}
-      onChange={handleChange}
-      className="monaco-editor-input"
-      options={monacoOptions}
-      loading={''}
-    />
-  );
-
-  const tabs = new Map([['Input', editorContent]]);
-  const [activeTab, setActiveTab] = useState('Input');
-
-  return (
-    <ViewTransition
-      update={{
-        [CONFIG_PANEL_TRANSITION]: 'container',
-        default: 'none',
-      }}>
-      <div className="flex-1 min-w-[550px] sm:min-w-0">
-        <div className="flex flex-col h-full !h-[calc(100vh_-_3.5rem)] border-r border-gray-200">
-          <TabbedWindow
-            tabs={tabs}
-            activeTab={activeTab}
-            onTabChange={setActiveTab}
-          />
-        </div>
-      </div>
-    </ViewTransition>
-  );
-}

compiler/apps/playground/components/Editor/Output.tsx

@@ -1,422 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import {
-  CodeIcon,
-  DocumentAddIcon,
-  InformationCircleIcon,
-} from '@heroicons/react/outline';
-import MonacoEditor, {DiffEditor} from '@monaco-editor/react';
-import {
-  CompilerErrorDetail,
-  CompilerDiagnostic,
-  type CompilerError,
-} from 'babel-plugin-react-compiler';
-import parserBabel from 'prettier/plugins/babel';
-import * as prettierPluginEstree from 'prettier/plugins/estree';
-import * as prettier from 'prettier/standalone';
-import {type Store} from '../../lib/stores';
-import {
-  memo,
-  ReactNode,
-  use,
-  useState,
-  Suspense,
-  unstable_ViewTransition as ViewTransition,
-  unstable_addTransitionType as addTransitionType,
-  startTransition,
-} from 'react';
-import AccordionWindow from '../AccordionWindow';
-import TabbedWindow from '../TabbedWindow';
-import {monacoOptions} from './monacoOptions';
-import {BabelFileResult} from '@babel/core';
-import {
-  CONFIG_PANEL_TRANSITION,
-  TOGGLE_INTERNALS_TRANSITION,
-  EXPAND_ACCORDION_TRANSITION,
-} from '../../lib/transitionTypes';
-import {LRUCache} from 'lru-cache';
-
-const MemoizedOutput = memo(Output);
-
-export default MemoizedOutput;
-
-export const BASIC_OUTPUT_TAB_NAMES = ['Output', 'SourceMap'];
-
-const tabifyCache = new LRUCache<Store, Promise<Map<string, ReactNode>>>({
-  max: 5,
-});
-
-export type PrintedCompilerPipelineValue =
-  | {
-      kind: 'hir';
-      name: string;
-      fnName: string | null;
-      value: string;
-    }
-  | {kind: 'reactive'; name: string; fnName: string | null; value: string}
-  | {kind: 'debug'; name: string; fnName: string | null; value: string};
-
-export type CompilerTransformOutput = {
-  code: string;
-  sourceMaps: BabelFileResult['map'];
-  language: 'flow' | 'typescript';
-};
-export type CompilerOutput =
-  | {
-      kind: 'ok';
-      transformOutput: CompilerTransformOutput;
-      results: Map<string, Array<PrintedCompilerPipelineValue>>;
-      errors: Array<CompilerErrorDetail | CompilerDiagnostic>;
-    }
-  | {
-      kind: 'err';
-      results: Map<string, Array<PrintedCompilerPipelineValue>>;
-      error: CompilerError;
-    };
-
-type Props = {
-  store: Store;
-  compilerOutput: CompilerOutput;
-};
-
-async function tabify(
-  source: string,
-  compilerOutput: CompilerOutput,
-  showInternals: boolean,
-): Promise<Map<string, ReactNode>> {
-  const tabs = new Map<string, React.ReactNode>();
-  const reorderedTabs = new Map<string, React.ReactNode>();
-  const concattedResults = new Map<string, string>();
-  // Concat all top level function declaration results into a single tab for each pass
-  for (const [passName, results] of compilerOutput.results) {
-    if (!showInternals && !BASIC_OUTPUT_TAB_NAMES.includes(passName)) {
-      continue;
-    }
-    for (const result of results) {
-      switch (result.kind) {
-        case 'hir': {
-          const prev = concattedResults.get(result.name);
-          const next = result.value;
-          const identName = `function ${result.fnName}`;
-          if (prev != null) {
-            concattedResults.set(passName, `${prev}\n\n${identName}\n${next}`);
-          } else {
-            concattedResults.set(passName, `${identName}\n${next}`);
-          }
-          break;
-        }
-        case 'reactive': {
-          const prev = concattedResults.get(passName);
-          const next = result.value;
-          if (prev != null) {
-            concattedResults.set(passName, `${prev}\n\n${next}`);
-          } else {
-            concattedResults.set(passName, next);
-          }
-          break;
-        }
-        case 'debug': {
-          concattedResults.set(passName, result.value);
-          break;
-        }
-        default: {
-          const _: never = result;
-          throw new Error('Unexpected result kind');
-        }
-      }
-    }
-  }
-  let lastPassOutput: string | null = null;
-  let nonDiffPasses = ['HIR', 'BuildReactiveFunction', 'EnvironmentConfig'];
-  for (const [passName, text] of concattedResults) {
-    tabs.set(
-      passName,
-      <TextTabContent
-        output={text}
-        diff={lastPassOutput}
-        showInfoPanel={!nonDiffPasses.includes(passName)}></TextTabContent>,
-    );
-    lastPassOutput = text;
-  }
-  // Ensure that JS and the JS source map come first
-  if (compilerOutput.kind === 'ok') {
-    const {transformOutput} = compilerOutput;
-    const sourceMapUrl = getSourceMapUrl(
-      transformOutput.code,
-      JSON.stringify(transformOutput.sourceMaps),
-    );
-    const code = await prettier.format(transformOutput.code, {
-      semi: true,
-      parser: transformOutput.language === 'flow' ? 'babel-flow' : 'babel-ts',
-      plugins: [parserBabel, prettierPluginEstree],
-    });
-
-    let output: string;
-    let language: string;
-    if (compilerOutput.errors.length === 0) {
-      output = code;
-      language = 'javascript';
-    } else {
-      language = 'markdown';
-      output = `
-# Summary
-
-React Compiler compiled this function successfully, but there are lint errors that indicate potential issues with the original code.
-
-## ${compilerOutput.errors.length} Lint Errors
-
-${compilerOutput.errors.map(e => e.printErrorMessage(source, {eslint: false})).join('\n\n')}
-
-## Output
-
-\`\`\`js
-${code}
-\`\`\`
-`.trim();
-    }
-
-    reorderedTabs.set(
-      'Output',
-      <TextTabContent
-        output={output}
-        language={language}
-        diff={null}
-        showInfoPanel={false}></TextTabContent>,
-    );
-    if (sourceMapUrl) {
-      reorderedTabs.set(
-        'SourceMap',
-        <>
-          <iframe
-            src={sourceMapUrl}
-            className="w-full h-monaco_small sm:h-monaco"
-            title="Generated Code"
-          />
-        </>,
-      );
-    }
-  } else if (compilerOutput.kind === 'err') {
-    const errors = compilerOutput.error.printErrorMessage(source, {
-      eslint: false,
-    });
-    reorderedTabs.set(
-      'Output',
-      <TextTabContent
-        output={errors}
-        language="markdown"
-        diff={null}
-        showInfoPanel={false}></TextTabContent>,
-    );
-  }
-  tabs.forEach((tab, name) => {
-    reorderedTabs.set(name, tab);
-  });
-  return reorderedTabs;
-}
-
-function tabifyCached(
-  store: Store,
-  compilerOutput: CompilerOutput,
-): Promise<Map<string, ReactNode>> {
-  const cached = tabifyCache.get(store);
-  if (cached) return cached;
-  const result = tabify(store.source, compilerOutput, store.showInternals);
-  tabifyCache.set(store, result);
-  return result;
-}
-
-function Fallback(): JSX.Element {
-  return (
-    <div className="w-full h-monaco_small sm:h-monaco flex items-center justify-center">
-      Loading...
-    </div>
-  );
-}
-
-function utf16ToUTF8(s: string): string {
-  return unescape(encodeURIComponent(s));
-}
-
-function getSourceMapUrl(code: string, map: string): string | null {
-  code = utf16ToUTF8(code);
-  map = utf16ToUTF8(map);
-  return `https://evanw.github.io/source-map-visualization/#${btoa(
-    `${code.length}\0${code}${map.length}\0${map}`,
-  )}`;
-}
-
-function Output({store, compilerOutput}: Props): JSX.Element {
-  return (
-    <Suspense fallback={<Fallback />}>
-      <OutputContent store={store} compilerOutput={compilerOutput} />
-    </Suspense>
-  );
-}
-
-function OutputContent({store, compilerOutput}: Props): JSX.Element {
-  const [tabsOpen, setTabsOpen] = useState<Set<string>>(
-    () => new Set(['Output']),
-  );
-  const [activeTab, setActiveTab] = useState<string>('Output');
-
-  /*
-   * Update the active tab back to the output or errors tab when the compilation state
-   * changes between success/failure.
-   */
-  const [previousOutputKind, setPreviousOutputKind] = useState(
-    compilerOutput.kind,
-  );
-  const isFailure = compilerOutput.kind !== 'ok';
-
-  if (compilerOutput.kind !== previousOutputKind) {
-    setPreviousOutputKind(compilerOutput.kind);
-    if (isFailure) {
-      startTransition(() => {
-        addTransitionType(EXPAND_ACCORDION_TRANSITION);
-        setTabsOpen(prev => new Set(prev).add('Output'));
-        setActiveTab('Output');
-      });
-    }
-  }
-
-  const changedPasses: Set<string> = new Set(['Output', 'HIR']); // Initial and final passes should always be bold
-  let lastResult: string = '';
-  for (const [passName, results] of compilerOutput.results) {
-    for (const result of results) {
-      let currResult = '';
-      if (result.kind === 'hir' || result.kind === 'reactive') {
-        currResult += `function ${result.fnName}\n\n${result.value}`;
-      }
-      if (currResult !== lastResult) {
-        changedPasses.add(passName);
-      }
-      lastResult = currResult;
-    }
-  }
-  const tabs = use(tabifyCached(store, compilerOutput));
-
-  if (!store.showInternals) {
-    return (
-      <ViewTransition
-        update={{
-          [CONFIG_PANEL_TRANSITION]: 'container',
-          [TOGGLE_INTERNALS_TRANSITION]: '',
-          default: 'none',
-        }}>
-        <TabbedWindow
-          tabs={tabs}
-          activeTab={activeTab}
-          onTabChange={setActiveTab}
-        />
-      </ViewTransition>
-    );
-  }
-
-  return (
-    <ViewTransition
-      update={{
-        [CONFIG_PANEL_TRANSITION]: 'accordion-container',
-        [TOGGLE_INTERNALS_TRANSITION]: '',
-        default: 'none',
-      }}>
-      <AccordionWindow
-        defaultTab={store.showInternals ? 'HIR' : 'Output'}
-        setTabsOpen={setTabsOpen}
-        tabsOpen={tabsOpen}
-        tabs={tabs}
-        changedPasses={changedPasses}
-      />
-    </ViewTransition>
-  );
-}
-
-function TextTabContent({
-  output,
-  diff,
-  showInfoPanel,
-  language,
-}: {
-  output: string;
-  diff: string | null;
-  showInfoPanel: boolean;
-  language: string;
-}): JSX.Element {
-  const [diffMode, setDiffMode] = useState(false);
-  return (
-    /**
-     * Restrict MonacoEditor's height, since the config autoLayout:true
-     * will grow the editor to fit within parent element
-     */
-    <div className="w-full h-monaco_small sm:h-monaco">
-      {showInfoPanel ? (
-        <div className="flex items-center gap-1 bg-amber-50 p-2">
-          {diff != null && output !== diff ? (
-            <button
-              className="flex items-center gap-1 transition-colors duration-150 ease-in text-secondary hover:text-link"
-              onClick={() => setDiffMode(diffMode => !diffMode)}>
-              {!diffMode ? (
-                <>
-                  <DocumentAddIcon className="w-5 h-5" /> Show Diff
-                </>
-              ) : (
-                <>
-                  <CodeIcon className="w-5 h-5" /> Show Output
-                </>
-              )}
-            </button>
-          ) : (
-            <>
-              <span className="flex items-center gap-1">
-                <InformationCircleIcon className="w-5 h-5" /> No changes from
-                previous pass
-              </span>
-            </>
-          )}
-        </div>
-      ) : null}
-      {diff != null && diffMode ? (
-        <DiffEditor
-          original={diff}
-          modified={output}
-          loading={''}
-          options={{
-            ...monacoOptions,
-            scrollbar: {
-              vertical: 'hidden',
-            },
-            dimension: {
-              width: 0,
-              height: 0,
-            },
-            readOnly: true,
-            lineNumbers: 'off',
-            glyphMargin: false,
-            // Undocumented see https://github.com/Microsoft/vscode/issues/30795#issuecomment-410998882
-            overviewRulerLanes: 0,
-          }}
-        />
-      ) : (
-        <MonacoEditor
-          language={language ?? 'javascript'}
-          value={output}
-          loading={''}
-          className="monaco-editor-output"
-          options={{
-            ...monacoOptions,
-            readOnly: true,
-            lineNumbers: 'off',
-            glyphMargin: false,
-            // Undocumented see https://github.com/Microsoft/vscode/issues/30795#issuecomment-410998882
-            lineDecorationsWidth: 0,
-            lineNumbersMinChars: 0,
-          }}
-        />
-      )}
-    </div>
-  );
-}

compiler/apps/playground/components/Editor/index.tsx

@@ -1,18 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import dynamic from 'next/dynamic';
-
-/**
- * monaco-editor is currently not compatible with ssr
- * https://github.com/vercel/next.js/issues/31692
- */
-const Editor = dynamic(() => import('./EditorImpl'), {
-  ssr: false,
-});
-
-export default Editor;

compiler/apps/playground/components/Editor/monacoOptions.ts

@@ -1,45 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import type {EditorProps} from '@monaco-editor/react';
-
-export const monacoOptions: Partial<EditorProps['options']> = {
-  fontSize: 14,
-  padding: {top: 8},
-  scrollbar: {
-    verticalScrollbarSize: 10,
-    alwaysConsumeMouseWheel: false,
-  },
-  minimap: {
-    enabled: false,
-  },
-  formatOnPaste: true,
-  formatOnType: true,
-  fontFamily: '"Source Code Pro", monospace',
-  glyphMargin: true,
-
-  autoClosingBrackets: 'languageDefined',
-  autoClosingDelete: 'always',
-  autoClosingOvertype: 'always',
-
-  automaticLayout: true,
-  wordWrap: 'on',
-  wrappingIndent: 'same',
-
-  tabSize: 2,
-};
-
-export const monacoConfigOptions: Partial<EditorProps['options']> = {
-  ...monacoOptions,
-  lineNumbers: 'off',
-  renderLineHighlight: 'none',
-  overviewRulerBorder: false,
-  overviewRulerLanes: 0,
-  fontSize: 12,
-  scrollBeyondLastLine: false,
-  glyphMargin: false,
-};

compiler/apps/playground/components/Header.tsx

@@ -1,123 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import {RefreshIcon, ShareIcon} from '@heroicons/react/outline';
-import {CheckIcon} from '@heroicons/react/solid';
-import clsx from 'clsx';
-import Link from 'next/link';
-import {useSnackbar} from 'notistack';
-import {
-  useState,
-  startTransition,
-  unstable_addTransitionType as addTransitionType,
-} from 'react';
-import {defaultStore} from '../lib/defaultStore';
-import {IconGitHub} from './Icons/IconGitHub';
-import Logo from './Logo';
-import {useStore, useStoreDispatch} from './StoreContext';
-import {TOGGLE_INTERNALS_TRANSITION} from '../lib/transitionTypes';
-
-export default function Header(): JSX.Element {
-  const [showCheck, setShowCheck] = useState(false);
-  const store = useStore();
-  const dispatchStore = useStoreDispatch();
-  const {enqueueSnackbar, closeSnackbar} = useSnackbar();
-
-  const handleReset: () => void = () => {
-    if (confirm('Are you sure you want to reset the playground?')) {
-      /**
-       * Close open snackbars if any. This is necessary because when displaying
-       * outputs (Preview or not), we only close previous snackbars if we received
-       * new messages, which is needed in order to display "Bad URL" or success
-       * messages when loading Playground for the first time. Otherwise, messages
-       * such as "Bad URL" will be closed by the outputs calling `closeSnackbar`.
-       */
-      closeSnackbar();
-      dispatchStore({type: 'setStore', payload: {store: defaultStore}});
-    }
-  };
-
-  const handleShare: () => void = () => {
-    navigator.clipboard.writeText(location.href).then(() => {
-      enqueueSnackbar('URL copied to clipboard');
-      setShowCheck(true);
-      // Show the check mark icon briefly after URL is copied
-      setTimeout(() => setShowCheck(false), 1000);
-    });
-  };
-
-  return (
-    <div className="fixed z-10 flex items-center justify-between w-screen px-5 py-3 bg-white border-b border-gray-200 h-14">
-      <div className="flex items-center flex-none h-full gap-2 text-lg">
-        <Logo
-          className={clsx(
-            'w-8 h-8 text-link',
-            process.env.NODE_ENV === 'development' && 'text-yellow-600',
-          )}
-        />
-        <p className="hidden select-none sm:block">React Compiler Playground</p>
-      </div>
-      <div className="flex items-center text-[15px] gap-4">
-        <div className="flex items-center gap-2">
-          <label className="show-internals relative inline-block w-[34px] h-5">
-            <input
-              type="checkbox"
-              checked={store.showInternals}
-              onChange={() =>
-                startTransition(() => {
-                  addTransitionType(TOGGLE_INTERNALS_TRANSITION);
-                  dispatchStore({type: 'toggleInternals'});
-                })
-              }
-              className="absolute opacity-0 cursor-pointer h-full w-full m-0"
-            />
-            <span
-              className={clsx(
-                'absolute inset-0 rounded-full cursor-pointer transition-all duration-250',
-                "before:content-[''] before:absolute before:w-4 before:h-4 before:left-0.5 before:bottom-0.5",
-                'before:bg-white before:rounded-full before:transition-transform before:duration-250',
-                'focus-within:shadow-[0_0_1px_#2196F3]',
-                store.showInternals
-                  ? 'bg-link before:translate-x-3.5'
-                  : 'bg-gray-300',
-              )}></span>
-          </label>
-          <span className="text-secondary">Show Internals</span>
-        </div>
-        <button
-          title="Reset Playground"
-          aria-label="Reset Playground"
-          className="flex items-center gap-1 transition-colors duration-150 ease-in text-secondary hover:text-link"
-          onClick={handleReset}>
-          <RefreshIcon className="w-5 h-5" />
-          <p className="hidden sm:block">Reset</p>
-        </button>
-        <button
-          title="Copy sharable URL"
-          aria-label="Copy sharable URL"
-          className="flex items-center gap-1 transition-colors duration-150 ease-in text-secondary hover:text-link"
-          onClick={handleShare}
-          disabled={showCheck}>
-          {!showCheck ? (
-            <ShareIcon className="w-5 h-5" />
-          ) : (
-            <CheckIcon className="w-5 h-5 fill-blue-50" />
-          )}
-          <p className="hidden sm:block">Share</p>
-        </button>
-        <Link
-          href="https://github.com/facebook/react"
-          target="_blank"
-          rel="noreferrer noopener"
-          aria-label="Open on GitHub"
-          className="flex items-center gap-1 transition-colors duration-150 ease-in text-secondary hover:text-link">
-          <IconGitHub />
-        </Link>
-      </div>
-    </div>
-  );
-}

compiler/apps/playground/components/Icons/IconChevron.tsx

@@ -1,41 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import {memo} from 'react';
-
-export const IconChevron = memo<
-  JSX.IntrinsicElements['svg'] & {
-    /**
-     * The direction the arrow should point.
-     */
-    displayDirection: 'right' | 'left';
-  }
->(function IconChevron({className, displayDirection, ...props}) {
-  const rotationClass =
-    displayDirection === 'left' ? 'rotate-90' : '-rotate-90';
-  const classes = className ? `${rotationClass} ${className}` : rotationClass;
-
-  return (
-    <svg
-      className={classes}
-      xmlns="http://www.w3.org/2000/svg"
-      width="20"
-      height="20"
-      viewBox="0 0 20 20"
-      {...props}>
-      <g fill="none" fillRule="evenodd" transform="translate(-446 -398)">
-        <path
-          fill="currentColor"
-          fillRule="nonzero"
-          d="M95.8838835,240.366117 C95.3957281,239.877961 94.6042719,239.877961 94.1161165,240.366117 C93.6279612,240.854272 93.6279612,241.645728 94.1161165,242.133883 L98.6161165,246.633883 C99.1042719,247.122039 99.8957281,247.122039 100.383883,246.633883 L104.883883,242.133883 C105.372039,241.645728 105.372039,240.854272 104.883883,240.366117 C104.395728,239.877961 103.604272,239.877961 103.116117,240.366117 L99.5,243.982233 L95.8838835,240.366117 Z"
-          transform="translate(356.5 164.5)"
-        />
-        <polygon points="446 418 466 418 466 398 446 398" />
-      </g>
-    </svg>
-  );
-});

compiler/apps/playground/components/Icons/IconGitHub.tsx

@@ -1,24 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import {memo} from 'react';
-
-export const IconGitHub = memo<JSX.IntrinsicElements['svg']>(
-  function IconGitHub(props) {
-    return (
-      <svg
-        xmlns="http://www.w3.org/2000/svg"
-        width="1.5em"
-        height="1.5em"
-        viewBox="0 -2 24 24"
-        fill="currentColor"
-        {...props}>
-        <path d="M10 0a10 10 0 0 0-3.16 19.49c.5.1.68-.22.68-.48l-.01-1.7c-2.78.6-3.37-1.34-3.37-1.34-.46-1.16-1.11-1.47-1.11-1.47-.9-.62.07-.6.07-.6 1 .07 1.53 1.03 1.53 1.03.9 1.52 2.34 1.08 2.91.83.1-.65.35-1.09.63-1.34-2.22-.25-4.55-1.11-4.55-4.94 0-1.1.39-1.99 1.03-2.69a3.6 3.6 0 0 1 .1-2.64s.84-.27 2.75 1.02a9.58 9.58 0 0 1 5 0c1.91-1.3 2.75-1.02 2.75-1.02.55 1.37.2 2.4.1 2.64.64.7 1.03 1.6 1.03 2.69 0 3.84-2.34 4.68-4.57 4.93.36.31.68.92.68 1.85l-.01 2.75c0 .26.18.58.69.48A10 10 0 0 0 10 0"></path>
-      </svg>
-    );
-  },
-);

compiler/apps/playground/components/Logo.tsx

@@ -1,27 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-// https://github.com/reactjs/reactjs.org/blob/main/beta/src/components/Logo.tsx
-
-export default function Logo(props: JSX.IntrinsicElements['svg']): JSX.Element {
-  return (
-    <svg
-      viewBox="0 0 410 369"
-      fill="none"
-      xmlns="http://www.w3.org/2000/svg"
-      {...props}>
-      <path
-        d="M204.995 224.552C226.56 224.552 244.042 207.07 244.042 185.506C244.042 163.941 226.56 146.459 204.995 146.459C183.43 146.459 165.948 163.941 165.948 185.506C165.948 207.07 183.43 224.552 204.995 224.552Z"
-        fill="currentColor"
-      />
-      <path
-        d="M409.99 184.505C409.99 153.707 381.437 126.667 335.996 108.925C343.342 60.6535 334.19 22.3878 307.492 6.98883C283.649 -6.77511 250.631 -0.0395641 214.512 25.9753C211.316 28.2692 208.143 30.7097 204.97 33.2477C201.822 30.7097 198.65 28.2692 195.477 25.9753C159.359 -0.0395641 126.34 -6.79951 102.497 6.98883C75.8237 22.3878 66.6721 60.6291 74.0422 108.852C28.5529 126.618 0 153.682 0 184.505C0 215.303 28.5528 242.342 73.9934 260.084C66.6477 308.356 75.7993 346.621 102.497 362.02C110.575 366.682 119.727 369 129.684 369C149.085 369 171.61 360.215 195.477 343.034C198.674 340.74 201.847 338.3 205.019 335.762C208.167 338.3 211.34 340.74 214.512 343.034C238.38 360.239 260.905 369 280.306 369C290.263 369 299.415 366.682 307.492 362.02C331.335 348.256 342 316.287 337.534 271.993C337.143 268.089 336.631 264.135 335.996 260.109C381.461 242.367 409.99 215.327 409.99 184.505ZM225.934 41.8136C246.238 27.1955 265.127 19.5814 280.306 19.5814C286.871 19.5814 292.728 20.9968 297.731 23.8765C315.204 33.9798 322.672 62.9475 317.327 102.433C299.756 97.0401 280.306 92.9158 259.392 90.2802C246.872 73.8074 233.597 58.9453 220.003 46.2551C221.98 44.7421 223.957 43.229 225.934 41.8136ZM112.259 23.8765C117.262 20.9968 123.119 19.5814 129.684 19.5814C144.863 19.5814 163.752 27.1711 184.056 41.8136C186.033 43.229 188.01 44.7176 189.986 46.2551C176.393 58.9453 163.142 73.783 150.622 90.2558C129.732 92.8914 110.258 97.0401 92.687 102.409C87.3424 62.9475 94.7857 33.9798 112.259 23.8765ZM19.5233 184.505C19.5233 164.322 40.9014 143.359 77.776 128.253C81.9003 146.141 88.0502 165.054 96.1768 184.456C88.0014 203.881 81.8515 222.819 77.7272 240.732C40.9014 225.626 19.5233 204.687 19.5233 184.505ZM184.056 327.196C154.966 348.134 128.805 354.675 112.259 345.133C94.7857 335.029 87.3181 306.062 92.6626 266.576C110.234 271.969 129.684 276.093 150.598 278.729C163.117 295.202 176.393 310.064 189.986 322.754C188.01 324.292 186.033 325.78 184.056 327.196ZM204.995 310.04C180.591 287.685 157.138 257.815 137.347 223.551C132.051 214.4 121.344 191.396 117 182.489C113.535 190.786 110.112 198.398 107.427 206.5C109.623 210.575 118.092 229.213 120.434 233.288C125.071 241.317 129.928 249.127 134.931 256.692C120.898 254.227 107.915 251.055 96.1035 247.321C102.815 217.011 116.213 182.064 137.347 145.458C142.545 136.453 153.838 116.346 159.5 108C150.568 109.147 143.395 108.767 135 110.5C132.56 114.453 122.777 131.645 120.434 135.721C115.749 143.823 111.454 151.925 107.427 159.978C102.546 146.581 98.8124 133.744 96.1524 121.64C125.755 112.293 162.727 106.411 204.995 106.411C215.562 106.411 237.63 106.197 247.49 106.905C242.048 99.7544 237.38 93.2819 231.694 86.888C227.082 86.7416 209.705 86.888 204.995 86.888C195.672 86.888 186.545 87.2053 177.589 87.7422C186.472 77.1752 195.672 67.5111 204.995 58.9697C229.375 81.3239 252.851 111.195 272.643 145.458C277.841 154.463 289.073 175.426 293.49 184.505C296.98 176.207 300.281 168.64 302.99 160.489C300.793 156.389 291.898 139.747 289.555 135.696C284.918 127.667 280.062 119.858 275.059 112.317C289.092 114.782 302.075 117.954 313.886 121.688C307.175 151.998 293.777 186.945 272.643 223.551C267.445 232.556 252.651 253.178 246.99 261.524C255.922 260.377 265.595 258.663 273.99 256.93C276.43 252.976 287.212 237.364 289.555 233.288C294.216 225.235 298.512 217.182 302.489 209.153C307.224 222.185 310.982 234.997 313.715 247.394C284.138 256.741 247.214 262.598 204.995 262.598C194.428 262.598 169.859 261.208 160 260.5C165.442 267.65 171.304 275.095 176.99 281.489C181.602 281.635 200.285 282.121 204.995 282.121C214.317 282.121 223.444 281.804 232.401 281.267C223.493 291.834 214.317 301.498 204.995 310.04ZM297.731 345.133C281.185 354.699 254.999 348.159 225.934 327.196C223.957 325.78 221.98 324.292 220.003 322.754C233.597 310.064 246.848 295.226 259.367 278.753C280.233 276.118 299.659 271.993 317.205 266.625C317.547 269.089 317.888 271.554 318.132 273.97C321.72 309.649 314.277 335.566 297.731 345.133ZM332.262 240.756C328.065 222.599 321.842 203.686 313.813 184.578C321.988 165.152 328.138 146.215 332.262 128.302C369.088 143.408 390.466 164.322 390.466 184.505C390.466 204.687 369.113 225.626 332.262 240.756Z"
-        fill="currentColor"
-      />
-    </svg>
-  );
-}

compiler/apps/playground/components/Message.tsx

@@ -1,82 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import {
-  BanIcon,
-  ExclamationIcon,
-  InformationCircleIcon,
-  XIcon,
-} from '@heroicons/react/solid';
-import {CustomContentProps, SnackbarContent, useSnackbar} from 'notistack';
-import {forwardRef} from 'react';
-import {MessageLevel, MessageSource} from '../lib/stores';
-
-// https://notistack.com/examples/advanced/custom-component#custom-variant-(typescript)
-declare module 'notistack' {
-  interface VariantOverrides {
-    message: {
-      title: string;
-      level: MessageLevel;
-      codeframe: string | undefined;
-    };
-  }
-}
-
-interface MessageProps extends CustomContentProps {
-  title: string;
-  level: MessageLevel;
-  source: MessageSource;
-  codeframe: string | undefined;
-}
-
-const Message = forwardRef<HTMLDivElement, MessageProps>(
-  ({id, title, level, source, codeframe}, ref) => {
-    const {closeSnackbar} = useSnackbar();
-    const isDismissible = source !== MessageSource.Playground;
-
-    return (
-      <SnackbarContent
-        ref={ref}
-        className="flex items-start justify-between gap-3 px-4 py-3 text-sm bg-white border rounded-md shadow w-toast">
-        <div className="flex gap-3 w-toast-body">
-          {level === MessageLevel.Warning ? (
-            <div className="flex items-center justify-center flex-none rounded-md w-7 h-7 bg-amber-100">
-              <ExclamationIcon className="w-5 h-5 text-amber-600" />
-            </div>
-          ) : level === MessageLevel.Error ? (
-            <div className="flex items-center justify-center flex-none bg-red-100 rounded-md w-7 h-7">
-              <BanIcon className="w-5 h-5 text-red-600" />
-            </div>
-          ) : (
-            <div className="flex items-center justify-center flex-none rounded-md bg-sky-100 w-7 h-7">
-              <InformationCircleIcon className="w-5 h-5 text-sky-600" />
-            </div>
-          )}
-          <div className="flex flex-col justify-center gap-1 w-toast-title">
-            <p className="w-full">{title}</p>
-            {codeframe ? (
-              <pre className="overflow-x-auto break-words whitespace-pre-wrap">
-                <code className="text-xs">{codeframe}</code>
-              </pre>
-            ) : null}
-          </div>
-        </div>
-        {isDismissible ? (
-          <button
-            className="flex items-center justify-center flex-none transition-colors duration-150 ease-in rounded-md justify-self-end group w-7 h-7 hover:bg-gray-200"
-            onClick={() => closeSnackbar(id)}>
-            <XIcon className="w-5 h-5 fill-gray-500 group-hover:fill-gray-800" />
-          </button>
-        ) : null}
-      </SnackbarContent>
-    );
-  },
-);
-
-Message.displayName = 'MessageComponent';
-
-export default Message;

compiler/apps/playground/components/StoreContext.tsx

@@ -1,119 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-import type {Dispatch, ReactNode} from 'react';
-import {useState, useEffect, useReducer} from 'react';
-import createContext from '../lib/createContext';
-import {emptyStore, defaultStore} from '../lib/defaultStore';
-import {
-  saveStore,
-  initStoreFromUrlOrLocalStorage,
-  type Store,
-} from '../lib/stores';
-
-const StoreContext = createContext<Store>();
-
-/**
- * Hook to access the store.
- */
-export const useStore = StoreContext.useContext;
-
-const StoreDispatchContext = createContext<Dispatch<ReducerAction>>();
-
-/**
- * Hook to access the store dispatch function.
- */
-export const useStoreDispatch = StoreDispatchContext.useContext;
-
-/**
- * Make Store and dispatch function available to all sub-components in children.
- */
-export function StoreProvider({children}: {children: ReactNode}): JSX.Element {
-  const [store, dispatch] = useReducer(storeReducer, emptyStore);
-  const [isPageReady, setIsPageReady] = useState<boolean>(false);
-
-  useEffect(() => {
-    let mountStore: Store;
-    try {
-      mountStore = initStoreFromUrlOrLocalStorage();
-    } catch (e) {
-      console.error('Failed to initialize store from URL or local storage', e);
-      mountStore = defaultStore;
-    }
-    dispatch({type: 'setStore', payload: {store: mountStore}});
-    setIsPageReady(true);
-  }, []);
-
-  useEffect(() => {
-    if (store !== emptyStore) {
-      saveStore(store);
-    }
-  }, [store]);
-
-  return (
-    <StoreContext.Provider value={store}>
-      <StoreDispatchContext.Provider value={dispatch}>
-        {isPageReady ? children : null}
-      </StoreDispatchContext.Provider>
-    </StoreContext.Provider>
-  );
-}
-
-type ReducerAction =
-  | {
-      type: 'setStore';
-      payload: {
-        store: Store;
-      };
-    }
-  | {
-      type: 'updateSource';
-      payload: {
-        source: string;
-      };
-    }
-  | {
-      type: 'updateConfig';
-      payload: {
-        config: string;
-      };
-    }
-  | {
-      type: 'toggleInternals';
-    };
-
-function storeReducer(store: Store, action: ReducerAction): Store {
-  switch (action.type) {
-    case 'setStore': {
-      const newStore = action.payload.store;
-      return newStore;
-    }
-    case 'updateSource': {
-      const source = action.payload.source;
-      const newStore = {
-        ...store,
-        source,
-      };
-      return newStore;
-    }
-    case 'updateConfig': {
-      const config = action.payload.config;
-      const newStore = {
-        ...store,
-        config,
-      };
-      return newStore;
-    }
-    case 'toggleInternals': {
-      const newStore = {
-        ...store,
-        showInternals: !store.showInternals,
-      };
-      return newStore;
-    }
-  }
-}

compiler/apps/playground/components/TabbedWindow.tsx

@@ -1,81 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-import React, {
-  startTransition,
-  useId,
-  unstable_ViewTransition as ViewTransition,
-  unstable_addTransitionType as addTransitionType,
-} from 'react';
-import clsx from 'clsx';
-import {TOGGLE_TAB_TRANSITION} from '../lib/transitionTypes';
-
-export default function TabbedWindow({
-  tabs,
-  activeTab,
-  onTabChange,
-}: {
-  tabs: Map<string, React.ReactNode>;
-  activeTab: string;
-  onTabChange: (tab: string) => void;
-}): React.ReactElement {
-  const id = useId();
-  const transitionName = `tab-highlight-${id}`;
-
-  const handleTabChange = (tab: string): void => {
-    startTransition(() => {
-      addTransitionType(TOGGLE_TAB_TRANSITION);
-      onTabChange(tab);
-    });
-  };
-
-  return (
-    <div className="flex-1 min-w-[550px] sm:min-w-0">
-      <div className="flex flex-col h-full max-w-full">
-        <div className="flex p-2 flex-shrink-0">
-          {Array.from(tabs.keys()).map(tab => {
-            const isActive = activeTab === tab;
-            return (
-              <button
-                key={tab}
-                onClick={() => handleTabChange(tab)}
-                className={clsx(
-                  'transition-transform py-1.5 px-1.5 xs:px-3 sm:px-4 rounded-full text-sm relative',
-                  isActive ? 'text-link' : 'hover:bg-primary/5',
-                )}>
-                {isActive && (
-                  <ViewTransition
-                    name={transitionName}
-                    enter={{default: 'none'}}
-                    exit={{default: 'none'}}
-                    share={{
-                      [TOGGLE_TAB_TRANSITION]: 'tab-highlight',
-                      default: 'none',
-                    }}
-                    update={{default: 'none'}}>
-                    <div className="absolute inset-0 bg-highlight rounded-full" />
-                  </ViewTransition>
-                )}
-                <ViewTransition
-                  enter={{default: 'none'}}
-                  exit={{default: 'none'}}
-                  update={{
-                    [TOGGLE_TAB_TRANSITION]: 'tab-text',
-                    default: 'none',
-                  }}>
-                  <span className="relative z-1">{tab}</span>
-                </ViewTransition>
-              </button>
-            );
-          })}
-        </div>
-        <div className="flex-1 overflow-hidden w-full h-full">
-          {tabs.get(activeTab)}
-        </div>
-      </div>
-    </div>
-  );
-}

compiler/apps/playground/components/index.ts

@@ -1,10 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-export {default as Editor} from './Editor';
-export {default as Header} from './Header';
-export {StoreProvider} from './StoreContext';

compiler/apps/playground/hooks/index.ts

@@ -1,8 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- */
-
-export {default as useMountEffect} from './useMountEffect';