Changelog, blog post for 0.5.2, 0.4.2

I missed this in the Jekyll upgrade.

.claude/instructions.md

@@ -1,46 +0,0 @@
-# React
-
-**Scope**: All code EXCEPT `/compiler/` (compiler has its own instructions).
-
-## Project Structure
-
-| Directory | Purpose |
-|-----------|---------|
-| `/packages/` | Publishable packages (react, react-dom, scheduler, etc.) |
-| `/scripts/` | Build, test, and development scripts |
-| `/fixtures/` | Test applications for manual testing |
-| `/compiler/` | React Compiler (separate sub-project) |
-
-## Key Packages
-
-| Package | Purpose |
-|---------|---------|
-| `react` | Core React library |
-| `react-dom` | DOM renderer |
-| `react-reconciler` | Core reconciliation algorithm |
-| `scheduler` | Cooperative scheduling |
-| `react-server-dom-*` | Server Components |
-| `react-devtools-*` | Developer Tools |
-| `react-refresh` | Fast Refresh runtime |
-
-## Requirements
-
-- **Node**: Must be installed. Stop and prompt user if missing.
-- **Package Manager**: Use `yarn` only.
-
-## Verification
-
-**IMPORTANT**: Use `/verify` to validate all changes before committing.
-
-## Commands
-
-| Command  | Purpose              |
-|----------|----------------------|
-| `/fix`   | Lint and format code |
-| `/test`  | Run tests            |
-| `/flow`  | Type check with Flow |
-| `/flags` | Check feature flags  |
-
-## Building
-
-Builds are handled by CI. Do not run locally unless instructed.

.claude/settings.json

@@ -1,44 +0,0 @@
-{
-  "hooks": {
-    "SessionStart": [
-      {
-        "hooks": [
-          {
-            "type": "command",
-            "command": "if [[ \"$PWD\" != */compiler* ]]; then cat .claude/instructions.md 2>/dev/null || true; fi"
-          }
-        ]
-      }
-    ]
-  },
-  "permissions": {
-    "allow": [
-      "Skill(extract-errors)",
-      "Skill(feature-flags)",
-      "Skill(fix)",
-      "Skill(flags)",
-      "Skill(flow)",
-      "Skill(test)",
-      "Skill(verify)",
-      "Bash(yarn test:*)",
-      "Bash(yarn test-www:*)",
-      "Bash(yarn test-classic:*)",
-      "Bash(yarn test-stable:*)",
-      "Bash(yarn linc:*)",
-      "Bash(yarn lint:*)",
-      "Bash(yarn flow:*)",
-      "Bash(yarn prettier:*)",
-      "Bash(yarn build:*)",
-      "Bash(yarn extract-errors:*)",
-      "Bash(yarn flags:*)"
-    ],
-    "deny": [
-      "Bash(yarn download-build:*)",
-      "Bash(yarn download-build-for-head:*)",
-      "Bash(npm:*)",
-      "Bash(pnpm:*)",
-      "Bash(bun:*)",
-      "Bash(npx:*)"
-    ]
-  }
-}

.claude/skills/extract-errors/SKILL.md

@@ -1,12 +0,0 @@
----
-name: extract-errors
-description: Use when adding new error messages to React, or seeing "unknown error code" warnings.
----
-
-# Extract Error Codes
-
-## Instructions
-
-1. Run `yarn extract-errors`
-2. Report if any new errors need codes assigned
-3. Check if error codes are up to date

.claude/skills/feature-flags/SKILL.md

@@ -1,79 +0,0 @@
----
-name: feature-flags
-description: Use when feature flag tests fail, flags need updating, understanding @gate pragmas, debugging channel-specific test failures, or adding new flags to React.
----
-
-# React Feature Flags
-
-## Flag Files
-
-| File | Purpose |
-|------|---------|
-| `packages/shared/ReactFeatureFlags.js` | Default flags (canary), `__EXPERIMENTAL__` overrides |
-| `packages/shared/forks/ReactFeatureFlags.www.js` | www channel, `__VARIANT__` overrides |
-| `packages/shared/forks/ReactFeatureFlags.native-fb.js` | React Native, `__VARIANT__` overrides |
-| `packages/shared/forks/ReactFeatureFlags.test-renderer.js` | Test renderer |
-
-## Gating Tests
-
-### `@gate` pragma (test-level)
-
-Use when the feature is completely unavailable without the flag:
-
-```javascript
-// @gate enableViewTransition
-it('supports view transitions', () => {
-  // This test only runs when enableViewTransition is true
-  // and is SKIPPED (not failed) when false
-});
-```
-
-### `gate()` inline (assertion-level)
-
-Use when the feature exists but behavior differs based on flag:
-
-```javascript
-it('renders component', async () => {
-  await act(() => root.render(<App />));
-
-  if (gate(flags => flags.enableNewBehavior)) {
-    expect(container.textContent).toBe('new output');
-  } else {
-    expect(container.textContent).toBe('legacy output');
-  }
-});
-```
-
-## Adding a New Flag
-
-1. Add to `ReactFeatureFlags.js` with default value
-2. Add to each fork file (`*.www.js`, `*.native-fb.js`, etc.)
-3. If it should vary in www/RN, set to `__VARIANT__` in the fork file
-4. Gate tests with `@gate flagName` or inline `gate()`
-
-## Checking Flag States
-
-Use `/flags` to view states across channels. See the `flags` skill for full command options.
-
-## `__VARIANT__` Flags (GKs)
-
-Flags set to `__VARIANT__` simulate gatekeepers - tested twice (true and false):
-
-```bash
-/test www <pattern>              # __VARIANT__ = true
-/test www variant false <pattern> # __VARIANT__ = false
-```
-
-## Debugging Channel-Specific Failures
-
-1. Run `/flags --diff <channel1> <channel2>` to compare values
-2. Check `@gate` conditions - test may be gated to specific channels
-3. Run `/test <channel> <pattern>` to isolate the failure
-4. Verify flag exists in all fork files if newly added
-
-## Common Mistakes
-
-- **Forgetting both variants** - Always test `www` AND `www variant false` for `__VARIANT__` flags
-- **Using @gate for behavior differences** - Use inline `gate()` if both paths should run
-- **Missing fork files** - New flags must be added to ALL fork files, not just the main one
-- **Wrong gate syntax** - It's `gate(flags => flags.name)`, not `gate('name')`

.claude/skills/fix/SKILL.md

@@ -1,17 +0,0 @@
----
-name: fix
-description: Use when you have lint errors, formatting issues, or before committing code to ensure it passes CI.
----
-
-# Fix Lint and Formatting
-
-## Instructions
-
-1. Run `yarn prettier` to fix formatting
-2. Run `yarn linc` to check for remaining lint issues
-3. Report any remaining manual fixes needed
-
-## Common Mistakes
-
-- **Running prettier on wrong files** - `yarn prettier` only formats changed files
-- **Ignoring linc errors** - These will fail CI, fix them before committing

.claude/skills/flags/SKILL.md

@@ -1,39 +0,0 @@
----
-name: flags
-description: Use when you need to check feature flag states, compare channels, or debug why a feature behaves differently across release channels.
----
-
-# Feature Flags
-
-Arguments:
-- $ARGUMENTS: Optional flags
-
-## Options
-
-| Option | Purpose |
-|--------|---------|
-| (none) | Show all flags across all channels |
-| `--diff <ch1> <ch2>` | Compare flags between channels |
-| `--cleanup` | Show flags grouped by cleanup status |
-| `--csv` | Output in CSV format |
-
-## Channels
-
-- `www`, `www-modern` - Meta internal
-- `canary`, `next`, `experimental` - OSS channels
-- `rn`, `rn-fb`, `rn-next` - React Native
-
-## Legend
-
-✅ enabled, ❌ disabled, 🧪 `__VARIANT__`, 📊 profiling-only
-
-## Instructions
-
-1. Run `yarn flags $ARGUMENTS`
-2. Explain the output to the user
-3. For --diff, highlight meaningful differences
-
-## Common Mistakes
-
-- **Forgetting `__VARIANT__` flags** - These are tested both ways in www; check both variants
-- **Comparing wrong channels** - Use `--diff` to see exact differences

.claude/skills/flow/SKILL.md

@@ -1,30 +0,0 @@
----
-name: flow
-description: Use when you need to run Flow type checking, or when seeing Flow type errors in React code.
----
-
-# Flow Type Checking
-
-Arguments:
-- $ARGUMENTS: Renderer to check (default: dom-node)
-
-## Renderers
-
-| Renderer | When to Use |
-|----------|-------------|
-| `dom-node` | Default, recommended for most changes |
-| `dom-browser` | Browser-specific DOM code |
-| `native` | React Native |
-| `fabric` | React Native Fabric |
-
-## Instructions
-
-1. Run `yarn flow $ARGUMENTS` (use `dom-node` if no argument)
-2. Report type errors with file locations
-3. For comprehensive checking (slow), use `yarn flow-ci`
-
-## Common Mistakes
-
-- **Running without a renderer** - Always specify or use default `dom-node`
-- **Ignoring suppressions** - Check if `$FlowFixMe` comments are masking real issues
-- **Missing type imports** - Ensure types are imported from the correct package

.claude/skills/test/SKILL.md

@@ -1,46 +0,0 @@
----
-name: test
-description: Use when you need to run tests for React core. Supports source, www, stable, and experimental channels.
----
-
-Run tests for the React codebase.
-
-Arguments:
-- $ARGUMENTS: Channel, flags, and test pattern
-
-Usage Examples:
-- `/test ReactFiberHooks` - Run with source channel (default)
-- `/test experimental ReactFiberHooks` - Run with experimental channel
-- `/test www ReactFiberHooks` - Run with www-modern channel
-- `/test www variant false ReactFiberHooks` - Test __VARIANT__=false
-- `/test stable ReactFiberHooks` - Run with stable channel
-- `/test classic ReactFiberHooks` - Run with www-classic channel
-- `/test watch ReactFiberHooks` - Run in watch mode (TDD)
-
-Release Channels:
-- `(default)` - Source/canary channel, uses ReactFeatureFlags.js defaults
-- `experimental` - Source/experimental channel with __EXPERIMENTAL__ flags = true
-- `www` - www-modern channel with __VARIANT__ flags = true
-- `www variant false` - www channel with __VARIANT__ flags = false
-- `stable` - What ships to npm
-- `classic` - Legacy www-classic (rarely needed)
-
-Instructions:
-1. Parse channel from arguments (default: source)
-2. Map to yarn command:
-   - (default) → `yarn test --silent --no-watchman <pattern>`
-   - experimental → `yarn test -r=experimental --silent --no-watchman <pattern>`
-   - stable → `yarn test-stable --silent --no-watchman <pattern>`
-   - classic → `yarn test-classic --silent --no-watchman <pattern>`
-   - www → `yarn test-www --silent --no-watchman <pattern>`
-   - www variant false → `yarn test-www --variant=false --silent --no-watchman <pattern>`
-3. Report test results and any failures
-
-Hard Rules:
-1. **Use --silent to see failures** - This limits the test output to only failures.
-2. **Use --no-watchman** - This is a common failure in sandboxing.
-
-Common Mistakes:
-- **Running without a pattern** - Runs ALL tests, very slow. Always specify a pattern.
-- **Forgetting both www variants** - Test `www` AND `www variant false` for `__VARIANT__` flags.
-- **Test skipped unexpectedly** - Check for `@gate` pragma; see `feature-flags` skill.

.claude/skills/verify/SKILL.md

@@ -1,24 +0,0 @@
----
-name: verify
-description: Use when you want to validate changes before committing, or when you need to check all React contribution requirements.
----
-
-# Verification
-
-Run all verification steps.
-
-Arguments:
-- $ARGUMENTS: Test pattern for the test step
-
-## Instructions
-
-Run these first in sequence:
-1. Run `yarn prettier` - format code (stop if fails)
-2. Run `yarn linc` - lint changed files (stop if fails)
-
-Then run these with subagents in parallel:
-1. Use `/flow` to type check (stop if fails)
-2. Use `/test` to test changes in source (stop if fails)
-3. Use `/test www` to test changes in www (stop if fails)
-
-If all pass, show success summary. On failure, stop immediately and report the issue with suggested fixes.

.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

@@ -1,16 +1,12 @@
-# https://editorconfig.org
+# http://editorconfig.org
 root = true
 
 [*]
-charset = utf-8
-end_of_line = lf
-indent_size = 2
 indent_style = space
-insert_final_newline = true
-max_line_length = 80
+indent_size = 2
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
 
 [*.md]
-max_line_length = 0
-
-[COMMIT_EDITMSG]
-max_line_length = 0
+trim_trailing_whitespace = false

.eslintignore

@@ -1,33 +0,0 @@
-# Third party
-**/node_modules
-
-# Not written by hand
-packages/react-art/npm/lib
-
-# Build products
-build/
-coverage/
-fixtures/
-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

@@ -1,657 +0,0 @@
-'use strict';
-
-const {
-  es5Paths,
-  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'],
-
-  // Stop ESLint from looking for a configuration file in parent folders
-  root: true,
-
-  reportUnusedDisableDirectives: true,
-
-  plugins: [
-    'babel',
-    'ft-flow',
-    'jest',
-    'es',
-    'no-for-of-loops',
-    'no-function-declare-after-return',
-    'react',
-    'react-internal',
-  ],
-
-  parser: 'hermes-eslint',
-  parserOptions: {
-    ecmaVersion: 9,
-    sourceType: 'script',
-  },
-
-  // 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'],
-    'consistent-return': OFF,
-    'dot-location': [ERROR, 'property'],
-    // We use console['error']() as a signal to not transform it:
-    'dot-notation': [ERROR, {allowPattern: '^(error|warn)$'}],
-    'eol-last': ERROR,
-    eqeqeq: [ERROR, 'allow-null'],
-    indent: OFF,
-    'jsx-quotes': [ERROR, 'prefer-double'],
-    'keyword-spacing': [ERROR, {after: true, before: true}],
-    'no-bitwise': OFF,
-    'no-console': OFF,
-    'no-inner-declarations': [ERROR, 'functions'],
-    'no-multi-spaces': ERROR,
-    'no-restricted-globals': [ERROR].concat(restrictedGlobals),
-    'no-restricted-syntax': [
-      ERROR,
-      'WithStatement',
-      {
-        selector: 'MemberExpression[property.name=/^(?:substring|substr)$/]',
-        message: 'Prefer string.slice() over .substring() and .substr().',
-      },
-    ],
-    'no-shadow': ERROR,
-    'no-unused-vars': [ERROR, {args: 'none', ignoreRestSiblings: true}],
-    'no-use-before-define': OFF,
-    'no-useless-concat': OFF,
-    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.
-    // They can, however, use other ES6 features.
-    // (Note these rules are overridden later for source files.)
-    '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'],
-    'react/jsx-no-undef': ERROR,
-    // We don't care to do this
-    'react/jsx-sort-prop-types': OFF,
-    'react/jsx-space-before-closing': ERROR,
-    'react/jsx-uses-react': ERROR,
-    'react/no-is-mounted': OFF,
-    // This isn't useful in our test code
-    '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},
-    ],
-
-    // 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,
-  },
-
-  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.
-      files: es5Paths,
-      parser: 'espree',
-      parserOptions: {
-        ecmaVersion: 5,
-        sourceType: 'script',
-      },
-      rules: {
-        'no-var': OFF,
-        strict: ERROR,
-      },
-    },
-    {
-      // 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',
-      parserOptions: {
-        ecmaVersion: 8,
-        sourceType: 'module',
-      },
-      rules: {
-        'no-var': ERROR,
-        'prefer-const': ERROR,
-        strict: OFF,
-      },
-    },
-    {
-      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_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,
-      },
-    },
-  ],
-
-  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',
-    Partial: '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',
-  },
-};

.git-blame-ignore-revs

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

.gitattributes

@@ -1 +0,0 @@
-* text=auto

.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 +0,0 @@
-<!--
-  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:
-
-  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.
--->

.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

@@ -1,66 +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"
-          - "10"
-    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

@@ -1,43 +1,25 @@
 .DS_STORE
 node_modules
-scripts/flow/*/.flowconfig
-.flowconfig
 *~
 *.pyc
+static
 .grunt
 _SpecRunner.html
 __benchmarks__
 build/
-remote-repo/
-coverage/
 .module-cache
-fixtures/dom/public/react-dom.js
-fixtures/dom/public/react.js
-test/the-files-to-test.generated.js
-*.log*
-chrome-user-data
-*.sublime-project
-*.sublime-workspace
-.idea
-*.iml
-.vscode
-*.swp
-*.swo
-/tmp
-/.worktrees
-.claude/*.local.*
-
-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
+*.gem
+docs/code
+docs/_site
+docs/.sass-cache
+docs/css/react.css
+docs/js/.module-cache
+docs/js/JSXTransformer.js
+docs/js/react.min.js
+docs/js/docs.js
+docs/js/jsx-compiler.js
+docs/js/live_editor.js
+docs/js/examples
+docs/downloads
+examples/shared/*.js
 

.jshintrc

@@ -0,0 +1,20 @@
+{
+  "node": true,
+
+  "boss": true,
+  "curly": true,
+  "devel": true,
+  "eqnull": true,
+  "expr": true,
+  "funcscope": true,
+  "globalstrict": true,
+  "loopfunc": true,
+  "newcap": false,
+  "noempty": true,
+  "nonstandard": true,
+  "onecase": true,
+  "regexdash": true,
+  "trailing": true,
+  "undef": true,
+  "unused": "vars"
+}

.mailmap

@@ -1,168 +1,21 @@
-Adam Timberlake <adam.timberlake@gmail.com>
-Alex Mykyta <dancingwithcows@gmail.com>
-Alex Pien <alexpien@gmail.com>
-Alex Pien <alexpien@gmail.com> <pien@pien-mbp.dhcp.thefacebook.com>
-Alex Pien <alexpien@gmail.com> <pien@pien-mbp.local>
-Andreas Savvides <asavvides@twitter.com> <AnSavvides@users.noreply.github.com>
-Andreas Savvides <asavvides@twitter.com> <andreas@nibbli.com>
-Andreas Svensson <andreas@syranide.com>
-Andres Suarez <zertosh@gmail.com>
-Andrew Kulakov <avk@8xx8.ru>
-Andrew Sokolov <asokolov@atlassian.com>
-Anto Aravinth <anto.aravinth.cse@gmail.com>
-Baraa Hamodi <bhamodi@uwaterloo.ca> <baraa@optimizely.com>
-Ben Halpern <bendhalpern@gmail.com>
 Ben Newman <bn@cs.stanford.edu> <benjamn@fb.com>
-Benjamin Woodruff <github@benjam.info> <bgw@fb.com>
-Bill Fisher <fisherwebdev@gmail.com>
-Blaine Kasten <blainekasten@gmail.com>
-Brandon Tilley <brandon@brandontilley.com>
-Changsoon Bok <winmain@gmail.com>
-Cheng Lou <chenglou92@gmail.com> <chenglou@fb.com>
-Christian Oliff <christianoliff@yahoo.com>
-Christoph Pojer <christoph.pojer@gmail.com>
-Christoph Pojer <christoph.pojer@gmail.com> <cpojer@fb.com>
-Connor McSheffrey <c@conr.me> <connor.mcsheffrey@gmail.com>
-Conor Hastings <hastings.conorm@gmail.com> <conor@socialtables.com>
 Dan Schafer <dschafer@fb.com>
-Daniel Gasienica <daniel@gasienica.ch> <daniel@fiftythree.com>
-Daniel Gasienica <daniel@gasienica.ch> <dgasienica@zynga.com>
-Daniel Hejl <daniel.hejl@hotmail.com>
-Daniel Lo Nigro <daniel@dan.cx> <danlo@fb.com>
-Dave Galbraith <dave@jut.io>
-Dennis Johnson <songawee@gmail.com>
-Dmitry Blues <dmitri.blyus@gmail.com>
-Dongsheng Liu <bellanchor@gmail.com>
-Erik Harper <eharper@mixpo.com>
-Evan Coonrod <evan@paloalto.com>
-Fabio M. Costa <fabiomcosta@gmail.com> <fabs@fb.com>
-Felix Kling <felix.kling@gmx.net> <fkling@fb.com>
-François-Xavier Bois <fxbois@gmail.com>
-Fyodor Ivanishchev <cbrwizard@gmail.com>
-Gabe Levi <gabelevi@gmail.com> <glevi@fb.com>
-Geert Pasteels <geert.pasteels@gmail.com>
-George A Sisco III <george.sisco@gmail.com>
-Georgii Dolzhykov <thorn.mailbox@gmail.com>
 Harry Hull <harry.hull1@gmail.com>
-Hendrik Swanepoel <hendrik.swanepoel@gmail.com>
-Hyeock Kwon <doublus@gmail.com>
-Ian Obermiller <ian@obermillers.com> <iano@fb.com>
-Ilia Pavlenkov <dortonway@gmail.com>
-Ilyá Belsky <gelias.gbelsky@gmail.com>
-Ingvar Stepanyan <me@rreverser.com> <rreverser@ubuntu.rreverser.a4.internal.cloudapp.net>
-Irae Carvalho <irae@irae.pro.br>
-Ivan Vergiliev <ivan.vergiliev@gmail.com>
-JJ Weber <jj.weber@gmail.com>
-Jae Hun Ro <jhr24@duke.edu>
-Jaime Mingo <j.mingov@3boll.com>
-James Brantly <james@jbrantly.com>
-Jan Hancic <jan.hancic@gmail.com> <jan.hancic@caplin.com>
-Jan Kassens <jan@kassens.net> <jkassens@fb.com>
-Jason Bonta <jbonta@gmail.com> <jasonbonta@fb.com>
-Jason Quense <monastic.panic@gmail.com>
-Jason Trill <jason@jasontrill.com>
-Jeff Chan <jefftchan@gmail.com> <jeff@quizlet.com>
 Jeff Morrison <jeff@anafx.com> <Jeff@anafx.com>
-Jeff Morrison <jeff@anafx.com> <jeffmo@fb.com>
-Jeff Morrison <jeff@anafx.com> <lbljeffmo@gmail.com>
+Jeff Morrison <jeff@anafx.com> JeffMo <jeffmo@fb.com>
 Jeffrey Lin <lin.jeffrey@gmail.com> <jeffreylin@fb.com>
-Jim Sproch <jsproch@fb.com>
-Jim Sproch <jsproch@fb.com> <jsfb@github>
-Jim Sproch <jsproch@fb.com> <none@no-reply.com>
-Jinwoo Oh <arkist@gmail.com>
-Jinxiu Lee <lee.jinxiu@gmail.com>
-Jiyeon Seo <zzzeons@gmail.com>
-Jon Chester <jonchester@fb.com>
-Jon Madison <jon@tfftech.com>
-Jonathan Hsu <jhiswin@gmail.com>
-Jonathan Persson <persson.jonathan@gmail.com> <jonathan.persson@creuna.se>
 Jordan Walke <jordojw@gmail.com>
 Jordan Walke <jordojw@gmail.com> <jordanjcw@fb.com>
-Joseph Savona <joesavona@fb.com> <josephsavona@users.noreply.github.com>
-Josh Duck <josh@fb.com> <github@joshduck.com>
-Juan Serrano <germ13@users.noreply.github.com>
-Jun Wu <quark@lihdd.net>
-Justin Robison <jrobison151@gmail.com>
-Keito Uchiyama <projects@keito.me> <keito@fb.com>
-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>
-Martin Andert <mandert@gmail.com>
-Mathieu M-Gosselin <mathieumg@gmail.com> <mathieumg@atx33.com>
-Matsunoki <himkt@klis.tsukuba.ac.jp>
-Matt Brookes <matt@brookes.net>
-Matt Dunn-Rankin <mdunnrankin@gmail.com> <matchu1993@gmail.com>
-Matt Zabriskie <mzabriskie@gmail.com>
-Matthew Johnston <matthewjohnston4@outlook.com> <matthewjohnston4@users.noreply.github.com>
-Matthew Looi <looi.matthew@gmail.com>
-Mattijs Kneppers <mattijs@arttech.nl>
-Max Heiber <max.heiber@gmail.com>
-Max Stoiber <contact@mstoiber.com>
-Michal Srb <xixixao@seznam.cz> xixixao <xixixao@seznam.cz>
-Michelle Todd <himichelletodd@gmail.com> <michelle@khanacademy.org>
-Mihai Parparita <mihai.parparita@gmail.com> <mihai@persistent.info>
-Minwe LUO <minwe@yunshipei.com>
-Murray M. Moss <murray@mmoss.name> <MMoss@cainc.com>
-Murray M. Moss <murray@mmoss.name> <mmoss@users.noreply.github.com>
-Neri Marschik <marschik_neri@cyberagent.co.jp>
 Nick Gavalas <njg57@cornell.edu>
-Nick Thompson <ncthom91@gmail.com> <nickt@instagram.com>
-Patrick Stapleton <github@gdi2290.com>
 Paul O’Shannessy <paul@oshannessy.com> <poshannessy@fb.com>
 Paul Shen <paul@mnml0.com> <paulshen@fb.com>
 Pete Hunt <floydophone@gmail.com>
 Pete Hunt <floydophone@gmail.com> <pete.hunt@fb.com>
 Pete Hunt <floydophone@gmail.com> <pete@instagram.com>
-Pete Hunt <floydophone@gmail.com> <phunt@instagram.com>
-Petri Lievonen <plievone@cc.hut.fi>
-Petri Lievonen <plievone@cc.hut.fi> <petri.lievonen@tkk.fi>
-Pieter Vanderwerff <me@pieter.io> <pieter@heyday.co.nz>
-Pouja Nikray <poujanik@gmail.com>
-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>
 Sander Spies <sandermail@gmail.com>
-Scott Feeney <scott@oceanbase.org> <smf@fb.com>
 Sebastian Markbåge <sebastian@calyptus.eu> <sema@fb.com>
-Sergey Rubanov <chi187@gmail.com>
-Shogun Sea <shogunsea08@gmail.com> <xxin@groupon.com>
-Soichiro Kawamura <mail@w-st.com>
-Sophie Alpert <git@sophiebits.com> <balpert@fb.com>
-Sophie Alpert <git@sophiebits.com> <ben@benalpert.com>
-Sophie Alpert <git@sophiebits.com> <sophiebits@fb.com>
-Sophie Alpert <git@sophiebits.com> <spicyjalapeno@gmail.com>
-Sota Ohara <ohrst.18@gmail.com>
-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>
 Timothy Yung <yungsters@gmail.com> <yungsters@fb.com>
-Tomoya Suzuki <tmysz.dev@gmail.com>
-Vasiliy Loginevskiy <Yeti.or@gmail.com>
-Vasiliy Loginevskiy <Yeti.or@gmail.com> <yeti-or@yandex-team.ru>
 Vjeux <vjeuxx@gmail.com>
 Vjeux <vjeuxx@gmail.com> <vjeux@fb.com>
-Volkan Unsal <spocksplanet@gmail.com>
-Wander Wang <wander.wang@ismole.com>
-Xavier Morel <xmo-odoo@users.noreply.github.com>
-YouBao Nong <noyobo@gmail.com> <nongyoubao@alibaba-inc.com>
-Yutaka Nakajima <nakazye@gmail.com>
-Zach Bruggeman <mail@bruggie.com> <zbruggeman@me.com>
-iawia002 <z2d@jifangcheng.com> <850127508@qq.com>
-元彦 <yuanyan@users.noreply.github.com>
-张敏 <cookfront@gmail.com>

.nvmrc

@@ -1 +0,0 @@
-v20.19.0

.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

@@ -1,34 +0,0 @@
-'use strict';
-
-const {esNextPaths} = require('./scripts/shared/pathsByLanguageVersion');
-
-module.exports = {
-  bracketSpacing: false,
-  singleQuote: true,
-  bracketSameLine: true,
-  trailingComma: 'es5',
-  printWidth: 80,
-  parser: 'flow',
-  arrowParens: 'avoid',
-  overrides: [
-    {
-      files: ['*.code-workspace'],
-      options: {
-        parser: 'json-stringify',
-      },
-    },
-    {
-      files: esNextPaths,
-      options: {
-        trailingComma: 'all',
-      },
-    },
-    {
-      files: ['*.ts', '*.tsx'],
-      options: {
-        trailingComma: 'all',
-        parser: 'typescript',
-      },
-    },
-  ],
-};

.travis.yml

@@ -0,0 +1,15 @@
+---
+language: node_js
+node_js:
+- '0.10'
+after_script:
+- curl -F "react=@build/react.js" -F "react.min=@build/react.min.js" -F "transformer=@build/JSXTransformer.js"
+  -F "react-with-addons=@build/react-with-addons.js" -F "react-with-addons.min=@build/react-with-addons.min.js"
+  -F "commit=$TRAVIS_COMMIT" -F "date=`git log --format='%ct' -1`" -F "pull_request=$TRAVIS_PULL_REQUEST"
+  -F "token=$SECRET_TOKEN" -F "branch=$TRAVIS_BRANCH" $SERVER
+env:
+  global:
+  # SERVER
+  - secure: qPvsJ46XzGrdIuPA70b55xQNGF8jcK7N1LN5CCQYYocXLa+fBrl+fTE77QvehOPhqwJXcj6kOxI+sY0KrVwV7gmq2XY2HZGWUSCxTN0SZlNIzqPA80Y7G/yOjA4PUt8LKgP+8tptyhTAY56qf+hgW8BoLiKOdztYF2p+3zXOLuA=
+  # SECRET_TOKEN
+  - secure: dkpPW+VnoqC/okhRdV90m36NcyBFhcwEKL3bNFExAwi0dXnFao8RoFlvnwiPlA23h2faROkMIetXlti6Aju08BgUFV+f9aL6vLyU7gUent4Nd3413zf2fwDtXIWIETg6uLnOpSykGKgCAT/hY3Q2oPLqOoY0OxfgnbqwxkxljrE=

.watchmanconfig

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

AUTHORS

@@ -0,0 +1,50 @@
+Alexander Solovyov <alexander@solovyov.net>
+Andrew Zich <azich@fb.com>
+Andrey Popp <8mayday@gmail.com>
+Ben Alpert <spicyjalapeno@gmail.com>
+Ben Newman <bn@cs.stanford.edu>
+Brian Rue <brian@rollbar.com>
+Cam Spiers <camspiers@gmail.com>
+Cat Chen <catchen@fb.com>
+Cheng Lou <chenglou92@gmail.com>
+Christian Roman <chroman16@gmail.com>
+Clay Allsopp <clay.allsopp@gmail.com>
+Connor McSheffrey <connor.mcsheffrey@gmail.com>
+Dan Schafer <dschafer@fb.com>
+Daniel Gasienica <dgasienica@zynga.com>
+Daniel Miladinov <dmiladinov@wingspan.com>
+Danny Ben-David <dannybd@fb.com>
+David Hu <davidhu91@gmail.com>
+Eric Clemmons <eric@smarterspam.com>
+Greg Roodt <groodt@gmail.com>
+Harry Hull <harry.hull1@gmail.com>
+Hugo Jobling <me@thisishugo.com>
+Ian Obermiller <iano@fb.com>
+Isaac Salier-Hellendag <isaac@fb.com>
+Jakub Malinowski <jakubmal@gmail.com>
+James Ide <ide@fb.com>
+Jamie Wong <jamie.lf.wong@gmail.com>
+Jan Kassens <jkassens@fb.com>
+Jeff Morrison <jeff@anafx.com>
+Jeffrey Lin <lin.jeffrey@gmail.com>
+Jordan Walke <jordojw@gmail.com>
+Josh Duck <josh@fb.com>
+Keito Uchiyama <keito@fb.com>
+Kunal Mehta <k.mehta@berkeley.edu>
+Laurence Rowe <l@lrowe.co.uk>
+Marshall Roch <mroch@fb.com>
+Martin Konicek <mkonicek@fb.com>
+Mathieu M-Gosselin <mathieumg@gmail.com>
+Nick Gavalas <njg57@cornell.edu>
+Owen Coutts <owenc@fb.com>
+Paul O’Shannessy <paul@oshannessy.com>
+Paul Seiffert <paul.seiffert@gmail.com>
+Paul Shen <paul@mnml0.com>
+Pete Hunt <floydophone@gmail.com>
+Peter Cottle <pcottle@fb.com>
+Sander Spies <sandermail@gmail.com>
+Sebastian Markbåge <sebastian@calyptus.eu>
+Stoyan Stefanov <ssttoo@ymail.com>
+Timothy Yung <yungsters@gmail.com>
+Vjeux <vjeuxx@gmail.com>
+Zach Bruggeman <zbruggeman@me.com>

CLAUDE.md

@@ -1,8 +0,0 @@
-# React
-
-React is a JavaScript library for building user interfaces.
-
-## Monorepo Overview
-
-- **React**: All files outside `/compiler/`
-- **React Compiler**: `/compiler/` directory (has its own instructions)

CODE_OF_CONDUCT.md

@@ -1,80 +0,0 @@
-# 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

CONTRIBUTING.md

@@ -1,5 +1,63 @@
 # Contributing to React
 
-Want to contribute to React? There are a few things you need to know.  
+React is one of Facebook's first open source projects that is both under very active development and is also being used to ship code to everybody on facebook.com. We're still working out the kinks to make contributing to this project as easy and transparent as possible, but we're not quite there yet. Hopefully this document makes the process for contributing clear and preempts some questions you may have.
 
-We wrote a **[contribution guide](https://reactjs.org/docs/how-to-contribute.html)** to help you get started.
+## Our Development Process
+
+Some of the core team will be working directly on GitHub. These changes will be public from the beginning. Other changesets will come via a bridge with Facebook's internal source control. This is a necessity as it allows engineers at Facebook outside of the core team to move fast and contribute from an environment they are comfortable in.
+
+### `master` is unsafe
+
+We will do our best to keep `master` in good shape, with tests passing at all times. But in order to move fast, we will make API changes that your application might not be compatible with. We will do our best to communicate these changes and always version appropriately so you can lock into a specific version if need be.
+
+### Pull Requests
+
+The core team will be monitoring for pull requests. When we get one, we'll run some Facebook-specific integration tests on it first. From here, we'll need to get another person to sign off on the changes and then merge the pull request. For API changes we may need to fix internal uses, which could cause some delay. We'll do our best to provide updates and feedback throughout the process.
+
+*Before* submitting a pull request, please make sure the following is done…
+
+1. Fork the repo and create your branch from `master`.
+2. If you've added code that should be tested, add tests!
+3. If you've changed APIs, update the documentation.
+4. Ensure the test suite passes (`grunt test`).
+5. Make sure your code lints (`grunt lint`) - we've done our best to make sure these rules match our internal linting guidelines.
+6. If you haven't already, complete the CLA.
+
+### Contributor License Agreement ("CLA")
+
+In order to accept your pull request, we need you to submit a CLA. You only need to do this once, so if you've done this for another Facebook open source project, you're good to go. If you are submitting a pull request for the first time, just let us know that you have completed the CLA and we can cross-check with your GitHub username.
+
+Complete your CLA here: <https://developers.facebook.com/opensource/cla>
+
+## Bugs
+
+### Where to Find Known Issues
+
+We will be using GitHub Issues for our public bugs. We will keep a close eye on this and try to make it clear when we have an internal fix in progress. Before filing a new task, try to make sure your problem doesn't already exist.
+
+### Reporting New Issues
+
+The best way to get your bug fixed is to provide a reduced test case. jsFiddle, jsBin, and other sites provide a way to give live examples. Those are especially helpful though may not work for `JSX`-based code.
+
+### Security Bugs
+
+Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe disclosure of security bugs. With that in mind, please do not file public issues and go through the process outlined on that page.
+
+## How to Get in Touch
+
+* IRC - [#reactjs on freenode](http://webchat.freenode.net/?channels=reactjs)
+* Mailing list - [reactjs on Google Groups](http://groups.google.com/group/reactjs)
+
+## Coding Style
+
+* Use semicolons;
+* Commas last,
+* 2 spaces for indentation (no tabs)
+* Prefer `'` over `"`
+* `"use strict";`
+* 80 character line length
+* "Attractive"
+
+## License
+
+By contributing to React, you agree that your contributions will be licensed under the [Apache License Version 2.0 (APLv2)](LICENSE).

Gruntfile.js

@@ -0,0 +1,130 @@
+'use strict';
+
+var exec = require('child_process').exec;
+var jsxTask = require('./grunt/tasks/jsx');
+var browserifyTask = require('./grunt/tasks/browserify');
+var wrapupTask = require('./grunt/tasks/wrapup');
+var populistTask = require('./grunt/tasks/populist');
+var phantomTask = require('./grunt/tasks/phantom');
+var npmTask = require('./grunt/tasks/npm');
+var releaseTasks = require('./grunt/tasks/release');
+
+module.exports = function(grunt) {
+
+  grunt.initConfig({
+    pkg: grunt.file.readJSON('package.json'),
+    copy: require('./grunt/config/copy'),
+    jsx: require('./grunt/config/jsx/jsx'),
+    browserify: require('./grunt/config/browserify'),
+    wrapup: require('./grunt/config/wrapup'),
+    populist: require('./grunt/config/populist'),
+    phantom: require('./grunt/config/phantom'),
+    npm: require('./grunt/config/npm'),
+    clean: ['./build', './*.gem', './docs/_site', './examples/shared/*.js'],
+    jshint: require('./grunt/config/jshint'),
+    compare_size: require('./grunt/config/compare_size')
+  });
+
+  grunt.config.set('compress', require('./grunt/config/compress'));
+
+  grunt.loadNpmTasks('grunt-contrib-jshint');
+  grunt.loadNpmTasks('grunt-contrib-copy');
+  grunt.loadNpmTasks('grunt-contrib-clean');
+  grunt.loadNpmTasks('grunt-compare-size');
+  grunt.loadNpmTasks('grunt-contrib-compress');
+
+  // Alias 'jshint' to 'lint' to better match the workflow we know
+  grunt.registerTask('lint', ['jshint']);
+
+  // Register jsx:debug and :release tasks.
+  grunt.registerMultiTask('jsx', jsxTask);
+
+  // Our own browserify-based tasks to build a single JS file build
+  grunt.registerMultiTask('browserify', browserifyTask);
+
+  // Similar to Browserify, use WrapUp to generate single JS file that
+  // defines global variables instead of using require.
+  grunt.registerMultiTask('wrapup', wrapupTask);
+
+  grunt.registerMultiTask('populist', populistTask);
+
+  grunt.registerMultiTask('phantom', phantomTask);
+
+  grunt.registerMultiTask('npm', npmTask);
+
+  // Check that the version we're exporting is the same one we expect in the
+  // package. This is not an ideal way to do this, but makes sure that we keep
+  // them in sync.
+  var reactVersionExp = /\bReact\.version\s*=\s*['"]([^'"]+)['"];/;
+  grunt.registerTask('version-check', function() {
+    var version = reactVersionExp.exec(
+      grunt.file.read('./build/modules/React.js')
+    )[1];
+    var expectedVersion = grunt.config.data.pkg.version;
+    if (version !== expectedVersion) {
+      grunt.log.error('Versions do not match. Expected %s, saw %s', expectedVersion, version);
+      return false;
+    }
+  });
+
+  grunt.registerTask('build:basic', ['jsx:debug', 'version-check', 'browserify:basic']);
+  grunt.registerTask('build:addons', ['jsx:debug', 'browserify:addons']);
+  grunt.registerTask('build:transformer', ['jsx:debug', 'browserify:transformer']);
+  grunt.registerTask('build:min', ['jsx:release', 'version-check', 'browserify:min']);
+  grunt.registerTask('build:addons-min', ['jsx:debug', 'browserify:addonsMin']);
+  grunt.registerTask('build:test', [
+    'jsx:jasmine',
+    'jsx:test',
+    'version-check',
+    'populist:jasmine',
+    'populist:test'
+  ]);
+
+  grunt.registerTask('test', ['build:test', 'build:basic', 'phantom:run']);
+  grunt.registerTask('npm:test', ['build', 'npm:pack']);
+
+  // Optimized build task that does all of our builds. The subtasks will be run
+  // in order so we can take advantage of that and only run jsx:debug once.
+  grunt.registerTask('build', [
+    'jsx:debug',
+    'version-check',
+    'browserify:basic',
+    'browserify:transformer',
+    'browserify:addons',
+    'jsx:release',
+    'browserify:min',
+    'browserify:addonsMin',
+    'copy:react_docs',
+    'compare_size'
+  ]);
+
+  // Automate the release!
+  grunt.registerTask('release:setup', releaseTasks.setup);
+  grunt.registerTask('release:bower', releaseTasks.bower);
+  grunt.registerTask('release:docs', releaseTasks.docs);
+  grunt.registerTask('release:msg', releaseTasks.msg);
+  grunt.registerTask('release:starter', releaseTasks.starter);
+
+  grunt.registerTask('release', [
+    'release:setup',
+    'clean',
+    'build',
+    'gem:only',
+    'release:bower',
+    'release:starter',
+    'compress',
+    'release:docs',
+    'release:msg'
+  ]);
+
+  // `gem` task to build the react-source gem
+  grunt.registerTask('gem', ['build', 'gem:only']);
+
+  grunt.registerTask('gem:only', function() {
+    var done = this.async();
+    exec('gem build react-source.gemspec', done);
+  });
+
+  // The default task - build - to keep setup easy
+  grunt.registerTask('default', ['build']);
+};

LICENSE

@@ -1,21 +1,201 @@
-MIT License
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MAINTAINERS

@@ -1,23 +0,0 @@
-acdlite
-eps1lon
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-elicwhite
-yuzhi

README.md

@@ -1,78 +1,94 @@
-# [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](http://facebook.github.io/react) [![Build Status](https://travis-ci.org/facebook/react.png?branch=master)](https://travis-ci.org/facebook/react)
 
 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/).
+* **Just the UI:** Lots of people use React as the V in MVC. Since React makes no assumptions about the rest of your technology stack, it's easy to try it out on a small feature in an existing project.
+* **Virtual DOM:** React uses a *virtual DOM* diff implementation for ultra-high performance. It can also render on the server using Node.js — no heavy browser DOM required.
+* **Data flow:** React implements one-way reactive data flow which reduces boilerplate and is easier to reason about than traditional data binding.
 
-[Learn how to use React in your project](https://react.dev/learn).
-
-## 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.
-
-## Documentation
-
-You can find the React documentation [on the website](https://react.dev/).
-
-Check out the [Getting Started](https://react.dev/learn) 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)
-
-You can improve it by sending pull requests to [this repository](https://github.com/reactjs/react.dev).
+[Learn how to use React in your own project.](http://facebook.github.io/react/docs/getting-started.html)
 
 ## 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](http://facebook.github.io/react/). Here is the first one to get you started:
 
-```jsx
-import { createRoot } from 'react-dom/client';
+```js
+/** @jsx React.DOM */
+var HelloMessage = React.createClass({
+  render: function() {
+    return <div>Hello {this.props.name}</div>;
+  }
+});
 
-function HelloMessage({ name }) {
-  return <div>Hello {name}</div>;
-}
-
-const root = createRoot(document.getElementById('container'));
-root.render(<HelloMessage name="Taylor" />);
+React.renderComponent(
+  <HelloMessage name="John" />,
+  document.getElementById('container')
+);
 ```
 
-This example will render "Hello Taylor" into a container on the page.
+This example will render "Hello John" 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 XML-like syntax; [we call it JSX](http://facebook.github.io/react/docs/jsx-in-depth.html). JSX is not required to use React, but it makes code more readable, and writing it feels like writing HTML. A simple transform is included with React that allows converting JSX into native JavaScript for browsers to digest.
 
-## Contributing
+## Installation
 
-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 fastest way to get started is to serve JavaScript from the CDN (also available on [CDNJS](http://cdnjs.com/#react)):
 
-### [Code of Conduct](https://code.fb.com/codeofconduct)
+```html
+<!-- The core React library -->
+<script src="http://fb.me/react-0.5.2.js"></script>
+<!-- In-browser JSX transformer, remove when pre-compiling JSX. -->
+<script src="http://fb.me/JSXTransformer-0.5.2.js"></script>
+```
 
-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.
+We've also built a [starter kit](http://facebook.github.io/react/downloads/react-0.5.2.zip) which might be useful if this is your first time using React. It includes a webpage with an example of using React with live code.
 
-### [Contributing Guide](https://legacy.reactjs.org/docs/how-to-contribute.html)
+If you'd like to use [bower](http://bower.io), it's as easy as:
 
-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.
+```sh
+bower install --save react
+```
 
-### [Good First Issues](https://github.com/facebook/react/labels/good%20first%20issue)
+## Contribute
 
-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.
+The main purpose of this repository is to continue to evolve React core, making it faster and easier to use. If you're interested in helping with that, then keep reading. If you're not interested in helping right now that's ok too. :) Any feedback you have about using React would be greatly appreciated.
 
-### License
+### Building Your Copy of React
 
-React is [MIT licensed](./LICENSE).
+The process to build `react.js` is built entirely on top of node.js, using many libraries you may already be familiar with.
+
+#### Prerequisites
+
+* You have `node` installed at v0.10.0+ (it might work at lower versions, we just haven't tested).
+* You are familiar with `npm` and know whether or not you need to use `sudo` when installing packages globally.
+* You are familiar with `git`.
+
+#### Build
+
+Once you have the repository cloned, building a copy of `react.js` is really easy.
+
+```sh
+# grunt-cli is needed by grunt; you might have this installed already
+npm install -g grunt-cli
+npm install
+grunt build
+```
+
+At this point, you should now have a `build/` directory populated with everything you need to use React. The examples should all work.
+
+### Grunt
+
+We use grunt to automate many tasks. Run `grunt -h` to see a mostly complete listing. The important ones to know:
+
+```sh
+# Build and run tests with PhantomJS
+grunt test
+# Lint the code with JSHint
+grunt lint
+# Wipe out build directory
+grunt clean
+```
+
+### More…
+
+There's only so much we can cram in here. To read more about the community and guidelines for submitting pull requests, please read the [Contributing document](CONTRIBUTING.md).

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

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}],
-  ],
-};

bin/jsx

@@ -0,0 +1,12 @@
+#!/usr/bin/env node
+"use strict";
+
+var visitors = require('../vendor/fbtransform/visitors').transformVisitors;
+var transform = require('jstransform').transform;
+
+require("commoner").resolve(function(id) {
+  return this.readModuleP(id);
+}).process(function(id, source) {
+  // This is where JSX, ES6, etc. desugaring happens.
+  return transform(visitors.react, source).code;
+});

bin/jsx-internal

@@ -0,0 +1,55 @@
+#!/usr/bin/env node
+"use strict";
+
+var visitors = require('../vendor/fbtransform/visitors').transformVisitors;
+var transform = require('jstransform').transform;
+var propagate = require("../vendor/constants").propagate;
+
+require("commoner").resolve(function(id) {
+  var context = this;
+
+  // Note that the result of context.getProvidedP() is cached for the
+  // duration of the build, so it is both consistent and cheap to
+  // evaluate multiple times.
+  return context.getProvidedP().then(function(idToPath) {
+    // If a module declares its own identifier using @providesModule
+    // then that identifier will be a key in the idToPath object.
+    if (idToPath.hasOwnProperty(id)) {
+      return context.readFileP(idToPath[id]);
+    }
+
+    // Otherwise assume the identifier maps directly to a path in the
+    // filesystem.
+    return context.readModuleP(id);
+  });
+
+}).process(function(id, source) {
+  var context = this;
+  var constants = context.config.constants || {};
+
+  // This is where JSX, ES6, etc. desugaring happens.
+  source = transform(visitors.react, source).code;
+
+  // Constant propagation means removing any obviously dead code after
+  // replacing constant expressions with literal (boolean) values.
+  source = propagate(constants, source);
+
+  if (context.config.mocking) {
+    // Make sure there is exactly one newline at the end of the module.
+    source = source.replace(/\s+$/m, "\n");
+
+    return context.getProvidedP().then(function(idToPath) {
+      if (id !== "mock-modules" &&
+          id !== "mocks" &&
+          id !== "test/all" &&
+          idToPath.hasOwnProperty("mock-modules")) {
+        return source + '\nrequire("mock-modules").register(' +
+          JSON.stringify(id) + ', module);\n';
+      }
+
+      return source;
+    });
+  }
+
+  return source;
+});

compiler/.claude/agents/investigate-error.md

@@ -1,113 +0,0 @@
----
-name: investigate-error
-description: Investigates React compiler errors to determine the root cause and identify potential mitigation(s). Use this agent when the user asks to 'investigate a bug', 'debug why this fixture errors', 'understand why the compiler is failing', 'find the root cause of a compiler issue', or when they provide a snippet of code and ask to debug. Use automatically when encountering a failing test case, in order to understand the root cause.
-model: opus
-color: pink
----
-
-You are an expert React Compiler debugging specialist with deep knowledge of compiler internals, intermediate representations, and optimization passes. Your mission is to systematically investigate compiler bugs to identify root causes and provide actionable information for fixes.
-
-## Your Investigation Process
-
-### Step 1: Create Test Fixture
-Create a new fixture file at `packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/<fixture-name>.js` containing the problematic code. Use a descriptive name that reflects the issue (e.g., `bug-optional-chain-in-effect.js`).
-
-### Step 2: Run Debug Compilation
-Execute `yarn snap -d -p <fixture-name>` to compile the fixture with full debug output. This shows the state of the program after each compilation pass. You can also use `yarn snap compile -d <path-to-fixture>`.
-
-### Step 3: Analyze Compilation Results
-
-### Step 3a: If the fixture compiles successfully
-- Compare the output against the user's expected behavior
-- Review each compilation pass output from the `-d` flag
-- Identify the first pass where the output diverges from expected behavior
-- Proceed to binary search simplification
-
-### Step 3b: If the fixture errors
-Execute `yarn snap minimize --update <path-to-fixture>` to remove non-critical aspects of the failing test case. This **updates the fixture in place**.
-
-Re-read the fixture file to see the latest, minimal reproduction of the error.
-
-### Step 4: Iteratively adjust the fixture until it stops erroring
-After the previous step the fixture will have all extraneous aspects removed. Try to make further edits to determine the specific feature that is causing the error.
-
-Ideas:
-* Replace immediately-invoked function expressions with labeled blocks
-* Remove statements
-* Simplify calls (remove arguments, replace the call with its lone argument)
-* Simplify control flow statements by picking a single branch. Try using a labeled block with just the selected block
-* Replace optional member/call expressions with non-optional versions
-* Remove items in array/object expressions
-* Remove properties from member expressions
-
-Try to make the minimal possible edit to get the fixture stop erroring.
-
-### Step 5: Compare Debug Outputs
-With both minimal versions (failing and non-failing):
-- Run `yarn snap -d -p <fixture-name>` on both
-- Compare the debug output pass-by-pass
-- Identify the exact pass where behavior diverges
-- Note specific differences in HIR, effects, or generated code
-
-### Step 6: Investigate Compiler Logic
-- Read the documentation for the problematic pass in `packages/babel-plugin-react-compiler/docs/passes/`
-- Examine the pass implementation in `packages/babel-plugin-react-compiler/src/`
-- Key directories to investigate:
-  - `src/HIR/` - IR definitions and utilities
-  - `src/Inference/` - Effect inference (aliasing, mutation)
-  - `src/Validation/` - Validation passes
-  - `src/Optimization/` - Optimization passes
-  - `src/ReactiveScopes/` - Reactive scope analysis
-- Identify specific code locations that may be handling the pattern incorrectly
-
-## Output Format
-
-Provide a structured investigation report:
-
-```
-## Investigation Summary
-
-### Bug Description
-[Brief description of the issue]
-
-### Minimal Failing Fixture
-```javascript
-// packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/<name>.js
-[minimal code that reproduces the error]
-```
-
-### Minimal Non-Failing Fixture
-```javascript
-// The simplest change that makes it work
-[code that compiles correctly]
-```
-
-### Problematic Compiler Pass
-[Name of the pass where the issue occurs]
-
-### Root Cause Analysis
-[Explanation of what the compiler is doing wrong]
-
-### Suspect Code Locations
-- `packages/babel-plugin-react-compiler/src/<path>:<line>:<column>` - [description of what may be incorrect]
-- [additional locations if applicable]
-
-### Suggested Fix Direction
-[Brief suggestion of how the bug might be fixed]
-```
-
-## Key Debugging Tips
-
-1. The debug output (`-d` flag) shows the program state after each pass - use this to pinpoint where things go wrong
-2. Look for `@aliasingEffects=` on FunctionExpressions to understand data flow
-3. Check for `Impure`, `Render`, `Capture` effects on instructions
-4. The pass ordering in `Pipeline.ts` shows when effects are populated vs validated
-5. Todo errors indicate unsupported but known patterns; Invariant errors indicate unexpected states
-
-## Important Reminders
-
-- Always create the fixture file before running tests
-- Use descriptive fixture names that indicate the bug being investigated
-- Keep both failing and non-failing minimal versions for your report
-- Provide specific file:line:column references when identifying suspect code
-- Read the relevant pass documentation before making conclusions about the cause

compiler/.claude/settings.json

@@ -1,18 +0,0 @@
-{
-  "permissions": {
-    "allow": [
-      "Bash(yarn snap:*)",
-      "Bash(yarn snap:build)",
-      "Bash(node scripts/enable-feature-flag.js:*)"
-    ],
-    "deny": [
-      "Skill(extract-errors)",
-      "Skill(feature-flags)",
-      "Skill(fix)",
-      "Skill(flags)",
-      "Skill(flow)",
-      "Skill(test)",
-      "Skill(verify)"
-    ]
-  }
-}

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

@@ -1,16 +0,0 @@
-.DS_Store
-.spr.yml
-
-node_modules
-.watchmanconfig
-.watchman-cookie-*
-dist
-.vscode
-!packages/playground/.vscode
-testfilter.txt
-.claude/settings.local.json
-
-# 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/CLAUDE.md

@@ -1,248 +0,0 @@
-# React Compiler Knowledge Base
-
-This document contains knowledge about the React Compiler gathered during development sessions. It serves as a reference for understanding the codebase architecture and key concepts.
-
-## Project Structure
-
-When modifying the compiler, you MUST read the documentation about that pass in `compiler/packages/babel-plugin-react-compiler/docs/passes/` to learn more about the role of that pass within the compiler.
-
-- `packages/babel-plugin-react-compiler/` - Main compiler package
-  - `src/HIR/` - High-level Intermediate Representation types and utilities
-  - `src/Inference/` - Effect inference passes (aliasing, mutation, etc.)
-  - `src/Validation/` - Validation passes that check for errors
-  - `src/Entrypoint/Pipeline.ts` - Main compilation pipeline with pass ordering
-  - `src/__tests__/fixtures/compiler/` - Test fixtures
-    - `error.todo-*.js` - Unsupported feature, correctly throws Todo error (graceful bailout)
-    - `error.bug-*.js` - Known bug, throws wrong error type or incorrect behavior
-    - `*.expect.md` - Expected output for each fixture
-
-## Running Tests
-
-```bash
-# Run all tests
-yarn snap
-
-# Run tests matching a pattern
-# Example: yarn snap -p 'error.*'
-yarn snap -p <pattern>
-
-# Run a single fixture in debug mode. Use the path relative to the __tests__/fixtures/compiler directory
-# For each step of compilation, outputs the step name and state of the compiled program
-# Example: yarn snap -p simple.js -d
-yarn snap -p <file-basename> -d
-
-# Update fixture outputs (also works with -p)
-yarn snap -u
-```
-
-## Compiling Arbitrary Files
-
-Use `yarn snap compile` to compile any file (not just fixtures) with the React Compiler:
-
-```bash
-# Compile a file and see the output
-yarn snap compile <path>
-
-# Compile with debug logging to see the state after each compiler pass
-# This is an alternative to `yarn snap -d -p <pattern>` when you don't have a fixture file yet
-yarn snap compile --debug <path>
-```
-
-## Minimizing Test Cases
-
-Use `yarn snap minimize` to automatically reduce a failing test case to its minimal reproduction:
-
-```bash
-# Minimize a file that causes a compiler error
-yarn snap minimize <path>
-
-# Minimize and update the file in-place with the minimized version
-yarn snap minimize --update <path>
-```
-
-## Version Control
-
-This repository uses Sapling (`sl`) for version control. Sapling is similar to Mercurial: there is not staging area, but new/deleted files must be explicitlyu added/removed.
-
-```bash
-# Check status
-sl status
-
-# Add new files, remove deleted files
-sl addremove
-
-# Commit all changes
-sl commit -m "Your commit message"
-
-# Commit with multi-line message using heredoc
-sl commit -m "$(cat <<'EOF'
-Summary line
-
-Detailed description here
-EOF
-)"
-```
-
-## Key Concepts
-
-### HIR (High-level Intermediate Representation)
-
-The compiler converts source code to HIR for analysis. Key types in `src/HIR/HIR.ts`:
-
-- **HIRFunction** - A function being compiled
-  - `body.blocks` - Map of BasicBlocks
-  - `context` - Captured variables from outer scope
-  - `params` - Function parameters
-  - `returns` - The function's return place
-  - `aliasingEffects` - Effects that describe the function's behavior when called
-
-- **Instruction** - A single operation
-  - `lvalue` - The place being assigned to
-  - `value` - The instruction kind (CallExpression, FunctionExpression, LoadLocal, etc.)
-  - `effects` - Array of AliasingEffects for this instruction
-
-- **Terminal** - Block terminators (return, branch, etc.)
-  - `effects` - Array of AliasingEffects
-
-- **Place** - A reference to a value
-  - `identifier.id` - Unique IdentifierId
-
-- **Phi nodes** - Join points for values from different control flow paths
-  - Located at `block.phis`
-  - `phi.place` - The result place
-  - `phi.operands` - Map of predecessor block to source place
-
-### AliasingEffects System
-
-Effects describe data flow and operations. Defined in `src/Inference/AliasingEffects.ts`:
-
-**Data Flow Effects:**
-- `Impure` - Marks a place as containing an impure value (e.g., Date.now() result, ref.current)
-- `Capture a -> b` - Value from `a` is captured into `b` (mutable capture)
-- `Alias a -> b` - `b` aliases `a`
-- `ImmutableCapture a -> b` - Immutable capture (like Capture but read-only)
-- `Assign a -> b` - Direct assignment
-- `MaybeAlias a -> b` - Possible aliasing
-- `CreateFrom a -> b` - Created from source
-
-**Mutation Effects:**
-- `Mutate value` - Value is mutated
-- `MutateTransitive value` - Value and transitive captures are mutated
-- `MutateConditionally value` - May mutate
-- `MutateTransitiveConditionally value` - May mutate transitively
-
-**Other Effects:**
-- `Render place` - Place is used in render context (JSX props, component return)
-- `Freeze place` - Place is frozen (made immutable)
-- `Create place` - New value created
-- `CreateFunction` - Function expression created, includes `captures` array
-- `Apply` - Function application with receiver, function, args, and result
-
-### Hook Aliasing Signatures
-
-Located in `src/HIR/Globals.ts`, hooks can define custom aliasing signatures to control how data flows through them.
-
-**Structure:**
-```typescript
-aliasing: {
-  receiver: '@receiver',    // The hook function itself
-  params: ['@param0'],      // Named positional parameters
-  rest: '@rest',            // Rest parameters (or null)
-  returns: '@returns',      // Return value
-  temporaries: [],          // Temporary values during execution
-  effects: [                // Array of effects to apply when hook is called
-    {kind: 'Freeze', value: '@param0', reason: ValueReason.HookCaptured},
-    {kind: 'Assign', from: '@param0', into: '@returns'},
-  ],
-}
-```
-
-**Common patterns:**
-
-1. **RenderHookAliasing** (useState, useContext, useMemo, useCallback):
-   - Freezes arguments (`Freeze @rest`)
-   - Marks arguments as render-time (`Render @rest`)
-   - Creates frozen return value
-   - Aliases arguments to return
-
-2. **EffectHookAliasing** (useEffect, useLayoutEffect, useInsertionEffect):
-   - Freezes function and deps
-   - Creates internal effect object
-   - Captures function and deps into effect
-   - Returns undefined
-
-3. **Event handler hooks** (useEffectEvent):
-   - Freezes callback (`Freeze @fn`)
-   - Aliases input to return (`Assign @fn -> @returns`)
-   - NO Render effect (callback not called during render)
-
-**Example: useEffectEvent**
-```typescript
-const UseEffectEventHook = addHook(
-  DEFAULT_SHAPES,
-  {
-    positionalParams: [Effect.Freeze],  // Takes one positional param
-    restParam: null,
-    returnType: {kind: 'Function', ...},
-    calleeEffect: Effect.Read,
-    hookKind: 'useEffectEvent',
-    returnValueKind: ValueKind.Frozen,
-    aliasing: {
-      receiver: '@receiver',
-      params: ['@fn'],              // Name for the callback parameter
-      rest: null,
-      returns: '@returns',
-      temporaries: [],
-      effects: [
-        {kind: 'Freeze', value: '@fn', reason: ValueReason.HookCaptured},
-        {kind: 'Assign', from: '@fn', into: '@returns'},
-        // Note: NO Render effect - callback is not called during render
-      ],
-    },
-  },
-  BuiltInUseEffectEventId,
-);
-
-// Add as both names for compatibility
-['useEffectEvent', UseEffectEventHook],
-['experimental_useEffectEvent', UseEffectEventHook],
-```
-
-**Key insight:** If a hook is missing an `aliasing` config, it falls back to `DefaultNonmutatingHook` which includes a `Render` effect on all arguments. This can cause false positives for hooks like `useEffectEvent` whose callbacks are not called during render.
-
-## Feature Flags
-
-Feature flags are configured in `src/HIR/Environment.ts`, for example `enableJsxOutlining`. Test fixtures can override the active feature flags used for that fixture via a comment pragma on the first line of the fixture input, for example:
-
-```javascript
-// enableJsxOutlining @enableNameAnonymousFunctions:false
-
-...code...
-```
-
-Would enable the `enableJsxOutlining` feature and disable the `enableNameAnonymousFunctions` feature.
-
-## Debugging Tips
-
-1. Run `yarn snap -p <fixture>` to see full HIR output with effects
-2. Look for `@aliasingEffects=` on FunctionExpressions
-3. Look for `Impure`, `Render`, `Capture` effects on instructions
-4. Check the pass ordering in Pipeline.ts to understand when effects are populated vs validated
-
-## Error Handling for Unsupported Features
-
-When the compiler encounters an unsupported but known pattern, use `CompilerError.throwTodo()` instead of `CompilerError.invariant()`. Todo errors cause graceful bailouts in production; Invariant errors are hard failures indicating unexpected/invalid states.
-
-```typescript
-// Unsupported but expected pattern - graceful bailout
-CompilerError.throwTodo({
-  reason: `Support [description of unsupported feature]`,
-  loc: terminal.loc,
-});
-
-// Invariant is for truly unexpected/invalid states - hard failure
-CompilerError.invariant(false, {
-  reason: `Unexpected [thing]`,
-  loc: terminal.loc,
-});
-```

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/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

@@ -1,343 +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(`/#${hash}`, {waitUntil: 'networkidle'});
-  await page.waitForFunction(isMonacoLoaded);
-  await expandConfigs(page);
-  await page.screenshot({
-    fullPage: true,
-    path: 'test-results/06-config-validation-error.png',
-  });
-
-  const text =
-    (await page.locator('.monaco-editor-output').allInnerTexts()) ?? [];
-  const output = text.join('');
-
-  expect(output.replace(/\s+/g, ' ')).toContain('Unexpected compilationMode');
-});
-
-test('error is displayed when source has syntax error', async ({page}) => {
-  const syntaxErrorSource = `function TestComponent(props) {
-  const oops = props.
-  return (
-    <>{oops}</>
-  );
-}`;
-  const store: Store = {
-    source: syntaxErrorSource,
-    config: defaultConfig,
-    showInternals: false,
-  };
-  const hash = encodeStore(store);
-  await page.goto(`/#${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>
-    </>
-  );
-}