Update error codes

* BUG: ReactPartialRenderer / New Context polutes mutable global state

The new context API stores the provided values on the shared context instance. When used in a synchronous context, this is not an issue. However when used in an concurrent context this can cause a "push provider" from one react render to have an effect on an unrelated concurrent react render.

I've encountered this bug in production when using renderToNodeStream, which asks ReactPartialRenderer for bytes up to a high water mark before yielding. If two Node Streams are created and read from in parallel, the state of one can polute the other.

I wrote a failing test to illustrate the conditions under which this happens.

I'm also concerned that the experimental concurrent/async React rendering on the client could suffer from the same issue.

* Use unique thread ID for each partial render to access Context

This first adds an allocator that keeps track of a unique ThreadID index
for each currently executing partial renderer. IDs are not just growing
but are reused as streams are destroyed.

This ensures that IDs are kept nice and compact.

This lets us use an "array" for each Context object to store the current
values. The look up for these are fast because they're just looking up
an offset in a tightly packed "array".

I don't use an actual Array object to store the values. Instead, I rely
on that VMs (notably V8) treat storage of numeric index property access
as a separate "elements" allocation.

This lets us avoid an extra indirection.

However, we must ensure that these arrays are not holey to preserve this
feature.

To do that I store the _threadCount on each context (effectively it takes
the place of the .length property on an array).

This lets us first validate that the context has enough slots before we
access the slot. If not, we fill in the slots with the default value.

.babelrc

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

.circleci/config.yml

@@ -1,422 +1,42 @@
 version: 2
-
-aliases:
-  - &docker
-    - image: circleci/openjdk:8-jdk-node-browsers
-
-  - &environment
-    TZ: /usr/share/zoneinfo/America/Los_Angeles
-
-  - &restore_yarn_cache
-    restore_cache:
-      name: Restore node_modules cache
-      keys:
-        - v1-node-{{ arch }}-{{ .Branch }}-{{ checksum "yarn.lock" }}
-        - v1-node-{{ arch }}-{{ .Branch }}-
-        - v1-node-{{ arch }}-
-  - &run_yarn
-    run:
-      name: Install Packages
-      command: yarn --frozen-lockfile
-
-  - &attach_workspace
-    at: build
-
-  - &process_artifacts
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      - run: node ./scripts/rollup/consolidateBundleSizes.js
-      - run: ./scripts/circleci/upload_build.sh
-      - run: ./scripts/circleci/pack_and_store_artifact.sh
-      - store_artifacts:
-          path: ./node_modules.tgz
-      - store_artifacts:
-          path: ./build.tgz
-      - store_artifacts:
-          path: ./build/bundle-sizes.json
-      - store_artifacts:
-          # TODO: Update release script to use local file instead of pulling
-          # from artifacts.
-          path: ./scripts/error-codes/codes.json
-      - persist_to_workspace:
-          root: build
-          paths:
-            - bundle-sizes.json
-
 jobs:
-  setup:
-    docker: *docker
-    environment: *environment
+  build:
+
+    docker:
+      - image: circleci/openjdk:8-jdk-node-browsers
+
+    environment:
+      TZ: /usr/share/zoneinfo/America/Los_Angeles
+      TRAVIS_REPO_SLUG: facebook/react
+
+    parallelism: 4
 
     steps:
       - checkout
+
+      - run: echo $CIRCLE_COMPARE_URL | cut -d/ -f7
+
+      - restore_cache:
+          name: Restore node_modules cache
+          keys:
+            - v1-node-{{ arch }}-{{ .Branch }}-{{ checksum "yarn.lock" }}
+            - v1-node-{{ arch }}-{{ .Branch }}-
+            - v1-node-{{ arch }}-
+
       - run:
           name: Nodejs Version
           command: node --version
-      - *restore_yarn_cache
-      - *run_yarn
+
+      - run:
+          name: Install Packages
+          command: yarn install --frozen-lockfile
+
+      - run:
+          name: Test Packages
+          command: ./scripts/circleci/test_entry_point.sh
+
       - save_cache:
           name: Save node_modules cache
           key: v1-node-{{ arch }}-{{ .Branch }}-{{ checksum "yarn.lock" }}
           paths:
-            - ~/.cache/yarn
-
-  lint:
-    docker: *docker
-    environment: *environment
-
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run: node ./scripts/prettier/index
-      - run: node ./scripts/tasks/eslint
-      - run: ./scripts/circleci/check_license.sh
-      - run: ./scripts/circleci/check_modules.sh
-      - run: ./scripts/circleci/test_print_warnings.sh
-
-  flow:
-    docker: *docker
-    environment: *environment
-
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run: node ./scripts/tasks/flow-ci
-
-  test_source:
-    docker: *docker
-    environment: *environment
-
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: stable
-          command: yarn test --maxWorkers=2
-
-  test_source_experimental:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: experimental
-          command: yarn test --maxWorkers=2
-
-  test_source_persistent:
-    docker: *docker
-    environment: *environment
-
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: stable
-          command: yarn test-persistent --maxWorkers=2
-
-  test_source_prod:
-    docker: *docker
-    environment: *environment
-
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: stable
-          command: yarn test-prod --maxWorkers=2
-
-  build:
-    docker: *docker
-    environment: *environment
-    parallelism: 20
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: stable
-          command: |
-            ./scripts/circleci/add_build_info_json.sh
-            ./scripts/circleci/update_package_versions.sh
-            yarn build
-      - run: echo "stable" >> build/RELEASE_CHANNEL
-      - persist_to_workspace:
-          root: build
-          paths:
-            - RELEASE_CHANNEL
-            - facebook-www
             - node_modules
-            - react-native
-            - dist
-            - sizes/*.json
-
-  build_experimental:
-    docker: *docker
-    environment: *environment
-    parallelism: 20
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: experimental
-          command: |
-            ./scripts/circleci/add_build_info_json.sh
-            ./scripts/circleci/update_package_versions.sh
-            yarn build
-      - run: echo "experimental" >> build/RELEASE_CHANNEL
-      - persist_to_workspace:
-          root: build
-          paths:
-            - RELEASE_CHANNEL
-            - facebook-www
-            - node_modules
-            - react-native
-            - dist
-            - sizes/*.json
-
-  # These jobs are named differently so we can distinguish the stable and
-  # and experimental artifacts
-  process_artifacts: *process_artifacts
-  process_artifacts_experimental: *process_artifacts
-
-  sizebot:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      # This runs in the process_artifacts job, too, but it's faster to run
-      # this step in both jobs instead of running the jobs sequentially
-      - run: node ./scripts/rollup/consolidateBundleSizes.js
-      - run:
-          environment:
-            RELEASE_CHANNEL: stable
-          command: node ./scripts/tasks/danger
-
-  sizebot_experimental:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      # This runs in the process_artifacts job, too, but it's faster to run
-      # this step in both jobs instead of running the jobs sequentially
-      - run: node ./scripts/rollup/consolidateBundleSizes.js
-      - run:
-          environment:
-            RELEASE_CHANNEL: experimental
-          command: node ./scripts/tasks/danger
-
-  lint_build:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      - run: yarn lint-build
-      - run: scripts/circleci/check_minified_errors.sh
-
-  test_build:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: stable
-          command: yarn test-build --maxWorkers=2
-
-  test_build_experimental:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: experimental
-          command: yarn test-build --maxWorkers=2
-
-  test_build_devtools:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: stable
-          command: yarn test-build --maxWorkers=2
-
-  test_dom_fixtures:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - run:
-          name: Run DOM fixture tests
-          environment:
-            RELEASE_CHANNEL: stable
-          command: |
-            cd fixtures/dom
-            yarn --frozen-lockfile
-            yarn prestart
-            yarn test --maxWorkers=2
-
-  test_fuzz:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          name: Run fuzz tests
-          command: |
-            FUZZ_TEST_SEED=$RANDOM yarn test fuzz --maxWorkers=2
-            FUZZ_TEST_SEED=$RANDOM yarn test-prod fuzz --maxWorkers=2
-
-  test_build_prod:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: stable
-          command: yarn test-build-prod --maxWorkers=2
-
-  test_build_prod_experimental:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      - run:
-          environment:
-            RELEASE_CHANNEL: experimental
-          command: yarn test-build-prod --maxWorkers=2
-
-workflows:
-  version: 2
-  stable:
-    jobs:
-      - setup
-      - lint:
-          requires:
-            - setup
-      - flow:
-          requires:
-            - setup
-      - test_source:
-          requires:
-            - setup
-      - test_source_prod:
-          requires:
-            - setup
-      - test_source_persistent:
-          requires:
-            - setup
-      - build:
-          requires:
-            - setup
-      - process_artifacts:
-          requires:
-            - build
-      - sizebot:
-          requires:
-            - build
-      - lint_build:
-          requires:
-            - build
-      - test_build:
-          requires:
-            - build
-      - test_build_prod:
-          requires:
-            - build
-      - test_build_devtools:
-          requires:
-            - build
-      - test_dom_fixtures:
-          requires:
-            - build
-
-  experimental:
-    jobs:
-      - setup
-      - test_source_experimental:
-          requires:
-            - setup
-      - build_experimental:
-          requires:
-            - setup
-      - process_artifacts_experimental:
-          requires:
-            - build_experimental
-      - sizebot_experimental:
-          requires:
-            - build_experimental
-      - test_build_experimental:
-          requires:
-            - build_experimental
-      - test_build_prod_experimental:
-          requires:
-            - build_experimental
-      - lint_build:
-          requires:
-            - build_experimental
-
-  fuzz_tests:
-    triggers:
-      - schedule:
-          # Fuzz tests run hourly
-          cron: "0 * * * *"
-          filters:
-            branches:
-              only:
-                - master
-    jobs:
-      - setup
-      - test_fuzz:
-          requires:
-            - setup

.eslintignore

@@ -12,10 +12,3 @@ scripts/bench/benchmarks/**/*.js
 
 # React repository clone
 scripts/bench/remote-repo/
-
-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-inline/dist
-packages/react-devtools-shell/dist

.eslintrc.js

@@ -12,13 +12,18 @@ module.exports = {
   extends: 'fbjs',
 
   // Stop ESLint from looking for a configuration file in parent folders
-  root: true,
+  'root': true,
 
-  plugins: ['jest', 'no-for-of-loops', 'react', 'react-internal'],
+  plugins: [
+    'jest',
+    'no-for-of-loops',
+    'react',
+    'react-internal',
+  ],
 
-  parser: 'babel-eslint',
+  parser: 'espree',
   parserOptions: {
-    ecmaVersion: 8,
+    ecmaVersion: 2017,
     sourceType: 'script',
     ecmaFeatures: {
       experimentalObjectRestSpread: true,
@@ -35,8 +40,8 @@ module.exports = {
     'dot-location': [ERROR, 'property'],
     'dot-notation': ERROR,
     'eol-last': ERROR,
-    eqeqeq: [ERROR, 'allow-null'],
-    indent: OFF,
+    'eqeqeq': [ERROR, 'allow-null'],
+    'indent': OFF,
     'jsx-quotes': [ERROR, 'prefer-double'],
     'keyword-spacing': [ERROR, {after: true, before: true}],
     'no-bitwise': OFF,
@@ -46,9 +51,9 @@ module.exports = {
     'no-shadow': ERROR,
     'no-unused-expressions': ERROR,
     'no-unused-vars': [ERROR, {args: 'none'}],
-    'no-use-before-define': OFF,
+    'no-use-before-define': [ERROR, {functions: false, variables: false}],
     'no-useless-concat': OFF,
-    quotes: [ERROR, 'single', {avoidEscape: true, allowTemplateLiterals: true}],
+    'quotes': [ERROR, 'single', {avoidEscape: true, allowTemplateLiterals: true }],
     'space-before-blocks': ERROR,
     'space-before-function-paren': OFF,
     'valid-typeof': [ERROR, {requireStringLiterals: true}],
@@ -60,12 +65,6 @@ module.exports = {
     'no-var': ERROR,
     strict: ERROR,
 
-    // Enforced by Prettier
-    // TODO: Prettier doesn't handle long strings or long comments. Not a big
-    // deal. But I turned it off because loading the plugin causes some obscure
-    // syntax error and it didn't seem worth investigating.
-    'max-len': OFF,
-
     // React & JSX
     // Our transforms set this automatically
     'react/jsx-boolean-value': [ERROR, 'always'],
@@ -79,10 +78,7 @@ module.exports = {
     'react/react-in-jsx-scope': ERROR,
     'react/self-closing-comp': ERROR,
     // We don't care to do this
-    'react/jsx-wrap-multilines': [
-      ERROR,
-      {declaration: false, assignment: false},
-    ],
+    'react/jsx-wrap-multilines': [ERROR, {declaration: false, assignment: false}],
 
     // Prevent for...of loops because they require a Symbol polyfill.
     // You can disable this rule for code that isn't shipped (e.g. build scripts and tests).
@@ -116,7 +112,6 @@ module.exports = {
       files: esNextPaths,
       parser: 'babel-eslint',
       parserOptions: {
-        ecmaVersion: 8,
         sourceType: 'module',
       },
       rules: {
@@ -129,27 +124,15 @@ module.exports = {
       rules: {
         // https://github.com/jest-community/eslint-plugin-jest
         'jest/no-focused-tests': ERROR,
-        'jest/valid-expect': ERROR,
-        'jest/valid-expect-in-promise': ERROR,
-      },
-    },
-    {
-      files: ['packages/react-native-renderer/**/*.js'],
-      globals: {
-        nativeFabricUIManager: true,
-      },
-    },
+      }
+    }
   ],
 
   globals: {
-    SharedArrayBuffer: true,
-
     spyOnDev: true,
     spyOnDevAndProd: true,
     spyOnProd: true,
     __PROFILE__: true,
     __UMD__: true,
-    __EXPERIMENTAL__: true,
-    trustedTypes: true,
   },
 };

.gitignore

@@ -22,14 +22,3 @@ chrome-user-data
 .vscode
 *.swp
 *.swo
-
-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-inline/dist
-packages/react-devtools-shell/dist

.nvmrc

@@ -1 +1 @@
-v10.16.3
+v8.4.0

.prettierignore

@@ -1,6 +0,0 @@
-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-inline/dist
-packages/react-devtools-shell/dist

.watchmanconfig

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

CHANGELOG.md

@@ -6,221 +6,12 @@
   </summary>
 </details>
 
-## 16.10.2 (October 3, 2019)
-
-### React DOM
-
-* Fix regression in react-native-web by restoring order of arguments in event plugin extractors ([@necolas](https://github.com/necolas) in [#16978](https://github.com/facebook/react/pull/16978))
-
-## 16.10.1 (September 28, 2019)
-
-### React DOM
-
-* Fix regression in Next.js apps by allowing Suspense mismatch during hydration to silently proceed ([@sebmarkbage](https://github.com/sebmarkbage) in [#16943](https://github.com/facebook/react/pull/16943))
-
-## 16.10.0 (September 27, 2019)
-
-### React DOM
-
-* Fix edge case where a hook update wasn't being memoized. ([@sebmarkbage](http://github.com/sebmarkbage) in [#16359](https://github.com/facebook/react/pull/16359))
-* Fix heuristic for determining when to hydrate, so we don't incorrectly hydrate during an update. ([@sebmarkbage](http://github.com/sebmarkbage) in [#16739](https://github.com/facebook/react/pull/16739))
-* Clear additional fiber fields during unmount to save memory. ([@trueadm](http://github.com/trueadm) in [#16807](https://github.com/facebook/react/pull/16807))
-* Fix bug with required text fields in Firefox. ([@halvves](http://github.com/halvves) in [#16578](https://github.com/facebook/react/pull/16578))
-* Prefer `Object.is` instead of inline polyfill, when available. ([@ku8ar](http://github.com/ku8ar) in [#16212](https://github.com/facebook/react/pull/16212))
-* Fix bug when mixing Suspense and error handling. ([@acdlite](http://github.com/acdlite) in [#16801](https://github.com/facebook/react/pull/16801))
-
-
-### Scheduler (Experimental)
-
-* Improve queue performance by switching its internal data structure to a min binary heap. ([@acdlite](http://github.com/acdlite) in [#16245](https://github.com/facebook/react/pull/16245))
-* Use `postMessage` loop with short intervals instead of attempting to align to frame boundaries with `requestAnimationFrame`. ([@acdlite](http://github.com/acdlite) in [#16214](https://github.com/facebook/react/pull/16214))
-
-### useSubscription
-
-* Avoid tearing issue when a mutation happens and the previous update is still in progress. ([@bvaughn](http://github.com/bvaughn) in [#16623](https://github.com/facebook/react/pull/16623))
-
-## 16.9.0 (August 8, 2019)
-
-### React
-
-* Add `<React.Profiler>` API for gathering performance measurements programmatically. ([@bvaughn](https://github.com/bvaughn) in [#15172](https://github.com/facebook/react/pull/15172))
-* Remove `unstable_ConcurrentMode` in favor of `unstable_createRoot`. ([@acdlite](https://github.com/acdlite) in [#15532](https://github.com/facebook/react/pull/15532))
-
-### React DOM
-
-* Deprecate old names for the `UNSAFE_*` lifecycle methods. ([@bvaughn](https://github.com/bvaughn) in [#15186](https://github.com/facebook/react/pull/15186) and [@threepointone](https://github.com/threepointone) in [#16103](https://github.com/facebook/react/pull/16103))
-* Deprecate `javascript:` URLs as a common attack surface. ([@sebmarkbage](https://github.com/sebmarkbage) in [#15047](https://github.com/facebook/react/pull/15047))
-* Deprecate uncommon "module pattern" (factory) components. ([@sebmarkbage](https://github.com/sebmarkbage) in [#15145](https://github.com/facebook/react/pull/15145))
-* Add support for the `disablePictureInPicture` attribute on `<video>`. ([@eek](https://github.com/eek) in [#15334](https://github.com/facebook/react/pull/15334))
-* Add support for `onLoad` event for `<embed>`. ([@cherniavskii](https://github.com/cherniavskii) in [#15614](https://github.com/facebook/react/pull/15614))
-* Add support for editing `useState` state from DevTools. ([@bvaughn](https://github.com/bvaughn) in [#14906](https://github.com/facebook/react/pull/14906))
-* Add support for toggling Suspense from DevTools. ([@gaearon](https://github.com/gaearon) in [#15232](https://github.com/facebook/react/pull/15232))
-* Warn when `setState` is called from `useEffect`, creating a loop. ([@gaearon](https://github.com/gaearon) in [#15180](https://github.com/facebook/react/pull/15180))
-* Fix a memory leak. ([@paulshen](https://github.com/paulshen) in [#16115](https://github.com/facebook/react/pull/16115))
-* Fix a crash inside `findDOMNode` for components wrapped in `<Suspense>`. ([@acdlite](https://github.com/acdlite) in [#15312](https://github.com/facebook/react/pull/15312))
-* Fix pending effects from being flushed too late. ([@acdlite](https://github.com/acdlite) in [#15650](https://github.com/facebook/react/pull/15650))
-* Fix incorrect argument order in a warning message. ([@brickspert](https://github.com/brickspert) in [#15345](https://github.com/facebook/react/pull/15345))
-* Fix hiding Suspense fallback nodes when there is an `!important` style. ([@acdlite](https://github.com/acdlite) in [#15861](https://github.com/facebook/react/pull/15861) and [#15882](https://github.com/facebook/react/pull/15882))
-* Slightly improve hydration performance. ([@bmeurer](https://github.com/bmeurer) in [#15998](https://github.com/facebook/react/pull/15998))
-
-### React DOM Server
-
-* Fix incorrect output for camelCase custom CSS property names. ([@bedakb](https://github.com/bedakb) in [#16167](https://github.com/facebook/react/pull/16167))
-
-### React Test Utilities and Test Renderer
-
-* Add `act(async () => ...)` for testing asynchronous state updates. ([@threepointone](https://github.com/threepointone) in [#14853](https://github.com/facebook/react/pull/14853))
-* Add support for nesting `act` from different renderers. ([@threepointone](https://github.com/threepointone) in [#16039](https://github.com/facebook/react/pull/16039) and [#16042](https://github.com/facebook/react/pull/16042))
-* Warn in Strict Mode if effects are scheduled outside an `act()` call. ([@threepointone](https://github.com/threepointone) in [#15763](https://github.com/facebook/react/pull/15763) and [#16041](https://github.com/facebook/react/pull/16041))
-* Warn when using `act` from the wrong renderer. ([@threepointone](https://github.com/threepointone) in [#15756](https://github.com/facebook/react/pull/15756))
-
-### ESLint Plugin: React Hooks
-
-* Report Hook calls at the top level as a violation. ([gaearon](https://github.com/gaearon) in [#16455](https://github.com/facebook/react/pull/16455))
-
-## 16.8.6 (March 27, 2019)
-
-### React DOM
-
-* Fix an incorrect bailout in `useReducer()`. ([@acdlite](https://github.com/acdlite) in [#15124](https://github.com/facebook/react/pull/15124))
-* Fix iframe warnings in Safari DevTools. ([@renanvalentin](https://github.com/renanvalentin) in [#15099](https://github.com/facebook/react/pull/15099))
-* Warn if `contextType` is set to `Context.Consumer` instead of `Context`. ([@aweary](https://github.com/aweary) in [#14831](https://github.com/facebook/react/pull/14831))
-* Warn if `contextType` is set to invalid values. ([@gaearon](https://github.com/gaearon) in [#15142](https://github.com/facebook/react/pull/15142))
-
-## 16.8.5 (March 22, 2019)
-
-### React DOM
-
-* Don't set the first option as selected in select tag with `size` attribute. ([@kulek1](https://github.com/kulek1) in [#14242](https://github.com/facebook/react/pull/14242))
-* Improve the `useEffect(async () => ...)` warning message. ([@gaearon](https://github.com/gaearon) in [#15118](https://github.com/facebook/react/pull/15118))
-* Improve the error message sometimes caused by duplicate React. ([@jaredpalmer](https://github.com/jaredpalmer) in [#15139](https://github.com/facebook/react/pull/15139))
-
-### React DOM Server
-
-* Improve the `useLayoutEffect` warning message when server rendering. ([@gaearon](https://github.com/gaearon) in [#15158](https://github.com/facebook/react/pull/15158))
-
-### React Shallow Renderer
-
-* Fix `setState` in shallow renderer to work with Hooks. ([@gaearon](https://github.com/gaearon) in [#15120](https://github.com/facebook/react/pull/15120))
-* Fix shallow renderer to support `React.memo`. ([@aweary](https://github.com/aweary) in [#14816](https://github.com/facebook/react/pull/14816))
-* Fix shallow renderer to support Hooks inside `forwardRef`. ([@eps1lon](https://github.com/eps1lon) in [#15100](https://github.com/facebook/react/pull/15100))
-
-## 16.8.4 (March 5, 2019)
-
-### React DOM and other renderers
-
-- Fix a bug where DevTools caused a runtime error when inspecting a component that used a `useContext` hook. ([@bvaughn](https://github.com/bvaughn) in [#14940](https://github.com/facebook/react/pull/14940))
-
-## 16.8.3 (February 21, 2019)
-
-### React DOM
-
-* Fix a bug that caused inputs to behave incorrectly in UMD builds. ([@gaearon](https://github.com/gaearon) in [#14914](https://github.com/facebook/react/pull/14914))
-* Fix a bug that caused render phase updates to be discarded. ([@gaearon](https://github.com/gaearon) in [#14852](https://github.com/facebook/react/pull/14852))
-
-### React DOM Server
-* Unwind the context stack when a stream is destroyed without completing, to prevent incorrect values during a subsequent render. ([@overlookmotel](https://github.com/overlookmotel) in [#14706](https://github.com/facebook/react/pull/14706/))
-
-### ESLint Plugin for React Hooks
-
-* Add a new recommended `exhaustive-deps` rule. ([@gaearon](https://github.com/gaearon) in [#14636](https://github.com/facebook/react/pull/14636))
-
-## 16.8.2 (February 14, 2019)
-
-### React DOM
-
-* Fix `ReactDOM.render` being ignored inside `useEffect`. ([@gaearon](https://github.com/gaearon) in [#14799](https://github.com/facebook/react/pull/14799))
-* Fix a crash when unmounting empty portals. ([@gaearon](https://github.com/gaearon) in [#14820](https://github.com/facebook/react/pull/14820))
-* Fix `useImperativeHandle` to work correctly when no deps are specified. ([@gaearon](https://github.com/gaearon) in [#14801](https://github.com/facebook/react/pull/14801))
-* Fix `crossOrigin` attribute to work in SVG `image` elements. ([@aweary](https://github.com/aweary) in [#14832](https://github.com/facebook/react/pull/14832))
-* Fix a false positive warning when using Suspense with Hooks. ([@gaearon](https://github.com/gaearon) in [#14821](https://github.com/facebook/react/pull/14821))
-
-### React Test Utils and React Test Renderer
-
-* Include component stack into the `act()` warning. ([@threepointone](https://github.com/threepointone) in [#14855](https://github.com/facebook/react/pull/14855))
-
-## 16.8.1 (February 6, 2019)
-
-### React DOM and React Test Renderer
-
-* Fix a crash when used together with an older version of React. ([@bvaughn](https://github.com/bvaughn) in [#14770](https://github.com/facebook/react/pull/14770))
-
-### React Test Utils
-
-* Fix a crash in Node environment. ([@threepointone](https://github.com/threepointone) in [#14768](https://github.com/facebook/react/pull/14768))
-
-## 16.8.0 (February 6, 2019)
-
-### React
-
-* Add [Hooks](https://reactjs.org/docs/hooks-intro.html) — a way to use state and other React features without writing a class. ([@acdlite](https://github.com/acdlite) et al. in [#13968](https://github.com/facebook/react/pull/13968))
-* Improve the `useReducer` Hook lazy initialization API. ([@acdlite](https://github.com/acdlite) in [#14723](https://github.com/facebook/react/pull/14723))
-
-### React DOM
-
-* Bail out of rendering on identical values for `useState` and `useReducer` Hooks. ([@acdlite](https://github.com/acdlite) in [#14569](https://github.com/facebook/react/pull/14569))
-* Use `Object.is` algorithm for comparing `useState` and `useReducer` values. ([@Jessidhia](https://github.com/Jessidhia) in [#14752](https://github.com/facebook/react/pull/14752))
-* Don’t compare the first argument passed to `useEffect`/`useMemo`/`useCallback` Hooks. ([@acdlite](https://github.com/acdlite) in [#14594](https://github.com/facebook/react/pull/14594))
-* Support synchronous thenables passed to `React.lazy()`. ([@gaearon](https://github.com/gaearon) in [#14626](https://github.com/facebook/react/pull/14626))
-* Render components with Hooks twice in Strict Mode (DEV-only) to match class behavior. ([@gaearon](https://github.com/gaearon) in [#14654](https://github.com/facebook/react/pull/14654))
-* Warn about mismatching Hook order in development. ([@threepointone](https://github.com/threepointone) in [#14585](https://github.com/facebook/react/pull/14585) and [@acdlite](https://github.com/acdlite) in [#14591](https://github.com/facebook/react/pull/14591))
-* Effect clean-up functions must return either `undefined` or a function. All other values, including `null`, are not allowed. [@acdlite](https://github.com/acdlite) in [#14119](https://github.com/facebook/react/pull/14119)
-
-### React Test Renderer and Test Utils
-
-* Support Hooks in the shallow renderer. ([@trueadm](https://github.com/trueadm) in [#14567](https://github.com/facebook/react/pull/14567))
-* Fix wrong state in `shouldComponentUpdate` in the presence of `getDerivedStateFromProps` for Shallow Renderer. ([@chenesan](https://github.com/chenesan) in [#14613](https://github.com/facebook/react/pull/14613))
-* Add `ReactTestRenderer.act()` and `ReactTestUtils.act()` for batching updates so that tests more closely match real behavior. ([@threepointone](https://github.com/threepointone) in [#14744](https://github.com/facebook/react/pull/14744))
-
-
-### ESLint Plugin: React Hooks
-
-* Initial [release](https://www.npmjs.com/package/eslint-plugin-react-hooks). ([@calebmer](https://github.com/calebmer) in [#13968](https://github.com/facebook/react/pull/13968))
-* Fix reporting after encountering a loop. ([@calebmer](https://github.com/calebmer) and [@Yurickh](https://github.com/Yurickh) in [#14661](https://github.com/facebook/react/pull/14661))
-* Don't consider throwing to be a rule violation. ([@sophiebits](https://github.com/sophiebits) in [#14040](https://github.com/facebook/react/pull/14040))
-
-## 16.7.0 (December 19, 2018)
-
-### React DOM
-
-* Fix performance of `React.lazy` for large numbers of lazily-loaded components. ([@acdlite](http://github.com/acdlite) in [#14429](https://github.com/facebook/react/pull/14429))
-* Clear fields on unmount to avoid memory leaks. ([@trueadm](http://github.com/trueadm) in [#14276](https://github.com/facebook/react/pull/14276))
-* Fix bug with SSR and context when mixing `react-dom/server@16.6` and `react@<16.6`. ([@gaearon](http://github.com/gaearon) in [#14291](https://github.com/facebook/react/pull/14291))
-* Fix a performance regression in profiling mode. ([@bvaughn](http://github.com/bvaughn) in [#14383](https://github.com/facebook/react/pull/14383))
-
-### Scheduler (Experimental)
-
-* Post to MessageChannel instead of window. ([@acdlite](http://github.com/acdlite) in [#14234](https://github.com/facebook/react/pull/14234))
-* Reduce serialization overhead. ([@developit](http://github.com/developit) in [#14249](https://github.com/facebook/react/pull/14249))
-* Fix fallback to `setTimeout` in testing environments. ([@bvaughn](http://github.com/bvaughn) in [#14358](https://github.com/facebook/react/pull/14358))
-* Add methods for debugging. ([@mrkev](http://github.com/mrkev) in [#14053](https://github.com/facebook/react/pull/14053))
-
-
-## 16.6.3 (November 12, 2018)
-
-### React DOM
-
-* Fix bugs in `Suspense` and `lazy`. ([@acdlite](https://github.com/acdlite) in [#14133](https://github.com/facebook/react/pull/14133), [#14157](https://github.com/facebook/react/pull/14157), and [#14164](https://github.com/facebook/react/pull/14164))
-* Fix highlighting of `React.memo` updates in React DevTools. ([@bvaughn](https://github.com/bvaughn) in [#14141](https://github.com/facebook/react/pull/14141))
-* Fix interaction of Suspense with the React Profiler. ([@bvaughn](https://github.com/bvaughn) in [#14065](https://github.com/facebook/react/pull/14065))
-* Fix a false positive warning when using Suspense. ([@acdlite](https://github.com/acdlite) in [#14158](https://github.com/facebook/react/pull/14158))
-
-### React DOM Server
-
-* Fix incorrect sharing of context state between `renderToNodeStream()` calls. ([@sebmarkbage](https://github.com/sebmarkbage) in [#14182](https://github.com/facebook/react/pull/14182))
-* Add a warning about incorrect usage of the context API. ([@trueadm](https://github.com/trueadm) in [#14033](https://github.com/facebook/react/pull/14033))
-
-## 16.6.2 (November 12, 2018)
-
-This release was published in a broken state and should be skipped.
-
 ## 16.6.1 (November 6, 2018)
 
 ### React DOM
 
 * Fallback should not remount every time a promise resolves. ([@acdlite](https://github.com/acdlite) in [#14083](https://github.com/facebook/react/pull/14083))
 * Fix bug where Suspense keeps showing fallback even after everything finishes loading. ([@acdlite](https://github.com/acdlite) in [#14083](https://github.com/facebook/react/pull/14083))
-* Fix a crash when Suspense finishes loading in IE11. ([@sophiebits](https://github.com/sophiebits) in [#14126](https://github.com/facebook/react/pull/14126))
 * Fix unresolved default props in lifecycle methods of a lazy component. ([@gaearon](https://github.com/gaearon) in [#14112](https://github.com/facebook/react/pull/14112))
 * Fix bug when recovering from an error thrown during complete phase. ([@gaearon](https://github.com/gaearon) in [#14104](https://github.com/facebook/react/pull/14104))
 
@@ -316,7 +107,7 @@ This release was published in a broken state and should be skipped.
 * Fix incorrect data in `compositionend` event when typing Korean on IE11 ([@crux153](https://github.com/crux153) in [#12563](https://github.com/facebook/react/issues/12563))
 * Fix a crash when using dynamic `children` in the `<option>` tag ([@Slowyn](https://github.com/Slowyn) in [#13261](https://github.com/facebook/react/issues/13261), [@gaearon](https://github.com/gaearon) in [#13465](https://github.com/facebook/react/pull/13465))
 * Fix the `checked` attribute not getting initially set on the `input` ([@dilidili](https://github.com/dilidili) in [#13114](https://github.com/facebook/react/issues/13114))
-* Fix hydration of `dangerouslySetInnerHTML` when `__html` is not a string ([@gaearon](https://github.com/gaearon) in [#13353](https://github.com/facebook/react/issues/13353))
+* Fix hydration of `dangerouslySetInnerHTML` when `__html` is not a string ([@gaearon](https://github.com/gaearon) in [#13353](https://github.com/facebook/react/issues/13353)) 
 * Fix a warning about missing controlled `onChange` to fire on falsy values too ([@nicolevy](https://github.com/nicolevy) in [#12628](https://github.com/facebook/react/issues/12628))
 * Fix `submit` and `reset` buttons getting an empty label ([@ellsclytn](https://github.com/ellsclytn) in [#12780](https://github.com/facebook/react/issues/12780))
 * Fix the `onSelect` event not being triggered after drag and drop ([@gaearon](https://github.com/gaearon) in [#13422](https://github.com/facebook/react/issues/13422))
@@ -507,7 +298,7 @@ This release was published in a broken state and should be skipped.
 * Deduplicate warning messages about invalid callback. ([@yenshih](https://github.com/yenshih) in [#11833](https://github.com/facebook/react/pull/11833))
 * Deprecate `ReactDOM.unstable_createPortal()` in favor of `ReactDOM.createPortal()`. ([@prometheansacrifice](https://github.com/prometheansacrifice) in [#11747](https://github.com/facebook/react/pull/11747))
 * Don't emit User Timing entries for context types. ([@abhaynikam](https://github.com/abhaynikam) in [#12250](https://github.com/facebook/react/pull/12250))
-* Improve the error message when context consumer child isn't a function. ([@raunofreiberg](https://github.com/raunofreiberg) in [#12267](https://github.com/facebook/react/pull/12267))
+* Improve the error message when context consumer child isn't a function. ([@raunofreiberg](https://github.com/raunofreiberg) in [#12267](https://github.com/facebook/react/pull/12267)) 
 * Improve the error message when adding a ref to a functional component. ([@skiritsis](https://github.com/skiritsis) in [#11782](https://github.com/facebook/react/pull/11782))
 
 ### React DOM Server

CODE_OF_CONDUCT.md

@@ -1,76 +1,3 @@
 # Code of Conduct
 
-## Our Pledge
-
-In the interest of fostering an open and welcoming environment, we as
-contributors and maintainers pledge to make participation in our project and
-our community a harassment-free experience for everyone, regardless of age, body
-size, disability, ethnicity, sex characteristics, gender identity and expression,
-level of experience, education, socio-economic status, nationality, personal
-appearance, race, religion, or sexual identity and orientation.
-
-## Our Standards
-
-Examples of behavior that contributes to creating a positive environment
-include:
-
-* Using welcoming and inclusive language
-* Being respectful of differing viewpoints and experiences
-* Gracefully accepting constructive criticism
-* Focusing on what is best for the community
-* Showing empathy towards other community members
-
-Examples of unacceptable behavior by participants include:
-
-* The use of sexualized language or imagery and unwelcome sexual attention or
-  advances
-* Trolling, insulting/derogatory comments, and personal or political attacks
-* Public or private harassment
-* Publishing others' private information, such as a physical or electronic
-  address, without explicit permission
-* Other conduct which could reasonably be considered inappropriate in a
-  professional setting
-
-## Our Responsibilities
-
-Project maintainers are responsible for clarifying the standards of acceptable
-behavior and are expected to take appropriate and fair corrective action in
-response to any instances of unacceptable behavior.
-
-Project maintainers have the right and responsibility to remove, edit, or
-reject comments, commits, code, wiki edits, issues, and other contributions
-that are not aligned to this Code of Conduct, or to ban temporarily or
-permanently any contributor for other behaviors that they deem inappropriate,
-threatening, offensive, or harmful.
-
-## Scope
-
-This Code of Conduct applies within all project spaces, and it also applies when
-an individual is representing the project or its community in public spaces.
-Examples of representing a project or community include using an official
-project e-mail address, posting via an official social media account, or acting
-as an appointed representative at an online or offline event. Representation of
-a project may be further defined and clarified by project maintainers.
-
-## Enforcement
-
-Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at <opensource-conduct@fb.com>. All
-complaints will be reviewed and investigated and will result in a response that
-is deemed necessary and appropriate to the circumstances. The project team is
-obligated to maintain confidentiality with regard to the reporter of an incident.
-Further details of specific enforcement policies may be posted separately.
-
-Project maintainers who do not follow or enforce the Code of Conduct in good
-faith may face temporary or permanent repercussions as determined by other
-members of the project's leadership.
-
-## Attribution
-
-This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
-available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
-
-[homepage]: https://www.contributor-covenant.org
-
-For answers to common questions about this code of conduct, see
-https://www.contributor-covenant.org/faq
+Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please [read the full text](https://code.fb.com/codeofconduct/) so that you can understand what actions will and will not be tolerated.

README.md

@@ -1,4 +1,4 @@
-# [React](https://reactjs.org/) · [![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/facebook/react/blob/master/LICENSE) [![npm version](https://img.shields.io/npm/v/react.svg?style=flat)](https://www.npmjs.com/package/react) [![CircleCI Status](https://circleci.com/gh/facebook/react.svg?style=shield&circle-token=:circle-token)](https://circleci.com/gh/facebook/react) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://reactjs.org/docs/how-to-contribute.html#your-first-pull-request)
+# [React](https://reactjs.org/) · [![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/facebook/react/blob/master/LICENSE) [![npm version](https://img.shields.io/npm/v/react.svg?style=flat)](https://www.npmjs.com/package/react) [![Coverage Status](https://img.shields.io/coveralls/facebook/react/master.svg?style=flat)](https://coveralls.io/github/facebook/react?branch=master) [![CircleCI Status](https://circleci.com/gh/facebook/react.svg?style=shield&circle-token=:circle-token)](https://circleci.com/gh/facebook/react) [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](https://reactjs.org/docs/how-to-contribute.html#your-first-pull-request)
 
 React is a JavaScript library for building user interfaces.
 
@@ -40,8 +40,10 @@ You can improve it by sending pull requests to [this repository](https://github.
 We have several examples [on the website](https://reactjs.org/). Here is the first one to get you started:
 
 ```jsx
-function HelloMessage({ name }) {
-  return <div>Hello {name}</div>;
+class HelloMessage extends React.Component {
+  render() {
+    return <div>Hello {this.props.name}</div>;
+  }
 }
 
 ReactDOM.render(
@@ -58,9 +60,9 @@ You'll notice that we used an HTML-like syntax; [we call it JSX](https://reactjs
 
 The main purpose of this repository is to continue to evolve React core, making it faster and easier to use. Development of React happens in the open on GitHub, and we are grateful to the community for contributing bugfixes and improvements. Read below to learn how you can take part in improving React.
 
-### [Code of Conduct](https://code.fb.com/codeofconduct)
+### [Code of Conduct](https://code.facebook.com/codeofconduct)
 
-Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read [the full text](https://code.fb.com/codeofconduct) so that you can understand what actions will and will not be tolerated.
+Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read [the full text](https://code.facebook.com/codeofconduct) so that you can understand what actions will and will not be tolerated.
 
 ### [Contributing Guide](https://reactjs.org/contributing/how-to-contribute.html)
 

babel.config.js

@@ -1,27 +0,0 @@
-'use strict';
-
-module.exports = {
-  plugins: [
-    '@babel/plugin-syntax-jsx',
-    '@babel/plugin-transform-react-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}],
-  ],
-};

dangerfile.js

@@ -17,7 +17,7 @@
 //
 // You'll need a GitHub token, you can re-use this one:
 //
-//  0a7d5c3cad9a6dbec2d9 9a5222cf49062a4c1ef7
+//  e622517d9f1136ea8900 07c6373666312cdfaa69
 //
 // (Just remove the space)
 //
@@ -25,34 +25,15 @@
 //
 // `DANGER_GITHUB_API_TOKEN=[ENV_ABOVE] yarn danger pr https://github.com/facebook/react/pull/11865
 
-const {markdown, danger, warn} = require('danger');
+const {markdown, danger} = require('danger');
 const fetch = require('node-fetch');
 
 const {generateResultsArray} = require('./scripts/rollup/stats');
-const {existsSync, readFileSync} = require('fs');
+const {readFileSync} = require('fs');
 const {exec} = require('child_process');
 
-// This must match the name of the CI job that creates the build artifacts
-const RELEASE_CHANNEL =
-  process.env.RELEASE_CHANNEL === 'experimental' ? 'experimental' : 'stable';
-const artifactsJobName =
-  process.env.RELEASE_CHANNEL === 'experimental'
-    ? 'process_artifacts_experimental'
-    : 'process_artifacts';
-
-if (!existsSync('./build/bundle-sizes.json')) {
-  // This indicates the build failed previously.
-  // In that case, there's nothing for the Dangerfile to do.
-  // Exit early to avoid leaving a redundant (and potentially confusing) PR comment.
-  warn(
-    'No bundle size information found. This indicates the build ' +
-      'job failed.'
-  );
-  process.exit(0);
-}
-
 const currentBuildResults = JSON.parse(
-  readFileSync('./build/bundle-sizes.json')
+  readFileSync('./scripts/rollup/results.json')
 );
 
 /**
@@ -120,75 +101,18 @@ function git(args) {
   // Use git locally to grab the commit which represents the place
   // where the branches differ
   const upstreamRepo = danger.github.pr.base.repo.full_name;
-  if (upstreamRepo !== 'facebook/react') {
-    // Exit unless we're running in the main repo
-    return;
-  }
-
-  markdown(`## Size changes (${RELEASE_CHANNEL})`);
-
   const upstreamRef = danger.github.pr.base.ref;
-  await git(`remote add upstream https://github.com/facebook/react.git`);
+  await git(`remote add upstream https://github.com/${upstreamRepo}.git`);
   await git('fetch upstream');
-  const baseCommit = await git(`merge-base HEAD upstream/${upstreamRef}`);
+  const mergeBaseCommit = await git(`merge-base HEAD upstream/${upstreamRef}`);
 
-  let previousBuildResults = null;
-  try {
-    let baseCIBuildId = null;
-    const statusesResponse = await fetch(
-      `https://api.github.com/repos/facebook/react/commits/${baseCommit}/status`
-    );
-    const {statuses, state} = await statusesResponse.json();
-    if (state === 'failure') {
-      warn(`Base commit is broken: ${baseCommit}`);
-      return;
-    }
-    for (let i = 0; i < statuses.length; i++) {
-      const status = statuses[i];
-      if (status.context === `ci/circleci: ${artifactsJobName}`) {
-        if (status.state === 'success') {
-          baseCIBuildId = /\/facebook\/react\/([0-9]+)/.exec(
-            status.target_url
-          )[1];
-          break;
-        }
-        if (status.state === 'pending') {
-          warn(`Build job for base commit is still pending: ${baseCommit}`);
-          return;
-        }
-      }
-    }
-
-    if (baseCIBuildId === null) {
-      warn(`Could not find build artifacts for base commit: ${baseCommit}`);
-      return;
-    }
-
-    const baseArtifactsInfoResponse = await fetch(
-      `https://circleci.com/api/v1.1/project/github/facebook/react/${baseCIBuildId}/artifacts`
-    );
-    const baseArtifactsInfo = await baseArtifactsInfoResponse.json();
-
-    for (let i = 0; i < baseArtifactsInfo.length; i++) {
-      const info = baseArtifactsInfo[i];
-      if (info.path === 'home/circleci/project/build/bundle-sizes.json') {
-        const resultsResponse = await fetch(info.url);
-        previousBuildResults = await resultsResponse.json();
-        break;
-      }
-    }
-  } catch (error) {
-    warn(`Failed to fetch build artifacts for base commit: ${baseCommit}`);
-    return;
-  }
-
-  if (previousBuildResults === null) {
-    warn(`Could not find build artifacts for base commit: ${baseCommit}`);
-    return;
-  }
+  const commitURL = sha =>
+    `http://react.zpao.com/builds/master/_commits/${sha}/results.json`;
+  const response = await fetch(commitURL(mergeBaseCommit));
 
   // Take the JSON of the build response and
   // make an array comparing the results for printing
+  const previousBuildResults = await response.json();
   const results = generateResultsArray(
     currentBuildResults,
     previousBuildResults
@@ -281,7 +205,7 @@ function git(args) {
   <details>
   <summary>Details of bundled changes.</summary>
 
-  <p>Comparing: ${baseCommit}...${danger.github.pr.head.sha}</p>
+  <p>Comparing: ${mergeBaseCommit}...${danger.github.pr.head.sha}</p>
 
 
   ${allTables.join('\n')}
@@ -289,7 +213,5 @@ function git(args) {
   </details>
   `;
     markdown(summary);
-  } else {
-    markdown('No significant bundle size changes to report.');
   }
 })();

fixtures/art/VectorWidget.js

@@ -32,7 +32,7 @@ class VectorWidget extends React.Component {
   /**
    * When the component is mounted into the document - this is similar to a
    * constructor, but invoked when the instance is actually mounted into the
-   * document. Here, we'll just set up an animation loop that invokes our
+   * document. Here's, we'll just set up an animation loop that invokes our
    * method. Binding of `this.onTick` is not needed because all React methods
    * are automatically bound before being mounted.
    */

fixtures/attribute-behavior/package.json

@@ -12,7 +12,7 @@
   },
   "scripts": {
     "prestart":
-      "cp ../../build/node_modules/react/umd/react.development.js public/ && cp ../../build/node_modules/react-dom/umd/react-dom.development.js public/ && cp ../../build/node_modules/react-dom/umd/react-dom-server.browser.development.js public/",
+      "cp ../../build/dist/react.development.js public/ && cp ../../build/dist/react-dom.development.js public/ && cp ../../build/dist/react-dom-server.browser.development.js public/",
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test --env=jsdom",

fixtures/attribute-behavior/src/App.css

@@ -0,0 +1 @@
+

fixtures/attribute-behavior/src/attributes.js

@@ -448,11 +448,6 @@ const attributes = [
     read: getSVGAttribute('direction'),
   },
   {name: 'disabled', tagName: 'input'},
-  {
-    name: 'disablePictureInPicture',
-    tagName: 'video',
-    read: getProperty('disablepictureinpicture'),
-  },
   {
     name: 'display',
     tagName: 'svg',

fixtures/devtools/regression/14.9.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 14.9</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@0.14.9/dist/react.js"></script>
-    <script src="https://unpkg.com/react-dom@0.14.9/dist/react-dom.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/14.9.html">http://localhost:3000/14.9.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/15.0.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 15.0</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@15.0/dist/react.js"></script>
-    <script src="https://unpkg.com/react-dom@15.0/dist/react-dom.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/15.0.html">http://localhost:3000/15.0.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/15.1.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 15.1</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@15.1/dist/react.js"></script>
-    <script src="https://unpkg.com/react-dom@15.1/dist/react-dom.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/15.1.html">http://localhost:3000/15.1.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/15.2.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 15.2</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@15.2/dist/react.js"></script>
-    <script src="https://unpkg.com/react-dom@15.2/dist/react-dom.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/15.2.html">http://localhost:3000/15.2.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/15.3.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 15.3</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@15.3/dist/react.js"></script>
-    <script src="https://unpkg.com/react-dom@15.3/dist/react-dom.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/15.3.html">http://localhost:3000/15.3.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/15.4.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 15.4</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@15.4/dist/react.js"></script>
-    <script src="https://unpkg.com/react-dom@15.4/dist/react-dom.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/15.4.html">http://localhost:3000/15.4.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/15.5.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 15.5</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@15.5/dist/react.js"></script>
-    <script src="https://unpkg.com/react-dom@15.5/dist/react-dom.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/15.5.html">http://localhost:3000/15.5.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/15.6.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 15.6</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@15.6/dist/react.js"></script>
-    <script src="https://unpkg.com/react-dom@15.6/dist/react-dom.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/15.6.html">http://localhost:3000/15.6.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/16.0.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 16.0</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@16.0/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@16.0/umd/react-dom.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/16.0.html">http://localhost:3000/16.0.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/16.1.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 16.1</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@16.1/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@16.1/umd/react-dom.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/16.1.html">http://localhost:3000/16.1.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/16.2.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 16.2</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@16.2/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@16.2/umd/react-dom.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/16.2.html">http://localhost:3000/16.2.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/16.3.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 16.3</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@16.3/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@16.3/umd/react-dom.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/16.3.html">http://localhost:3000/16.3.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/16.4.html

@@ -1,38 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 16.4</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/react@16.4/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@16.4/umd/react-dom.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/16.4.html">http://localhost:3000/16.4.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/16.5.html

@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 16.5</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/schedule@0.5.0/umd/schedule.development.js"></script>
-    <script src="https://unpkg.com/schedule@0.5.0/umd/schedule-tracing.development.js"></script>
-    <script src="https://unpkg.com/react@16.5/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@16.5/umd/react-dom.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/16.5.html">http://localhost:3000/16.5.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/16.6.html

@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 16.6</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/scheduler@0.10.0/umd/scheduler.development.js"></script>
-    <script src="https://unpkg.com/scheduler@0.10.0/umd/scheduler-tracing.development.js"></script>
-    <script src="https://unpkg.com/react@16.6/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@16.6/umd/react-dom.development.js"></script>
-    <script src="https://unpkg.com/react-cache@2.0.0-alpha.1/umd/react-cache.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/16.6.html">http://localhost:3000/16.6.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/16.7.html

@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React 16.7</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/scheduler@0.12.0/umd/scheduler.development.js"></script>
-    <script src="https://unpkg.com/scheduler@0.12.0/umd/scheduler-tracing.development.js"></script>
-    <script src="https://unpkg.com/react@16.7/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@16.7/umd/react-dom.development.js"></script>
-    <script src="https://unpkg.com/react-cache@2.0.0-alpha.1/umd/react-cache.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/16.7.html">http://localhost:3000/16.7.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/canary.html

@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React canary</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/scheduler@canary/umd/scheduler.development.js"></script>
-    <script src="https://unpkg.com/scheduler@canary/umd/scheduler-tracing.development.js"></script>
-    <script src="https://unpkg.com/react@canary/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@canary/umd/react-dom.development.js"></script>
-    <script src="https://unpkg.com/react-cache@next/umd/react-cache.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/canary.html">http://localhost:3000/canary.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/index.html

@@ -1,28 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React DevTools regression test</title>
-    <link rel="stylesheet" href="styles.css" />
-  </head>
-  <body>
-    <iframe src="canary.html"></iframe>
-    <iframe src="next.html"></iframe>
-    <iframe src="16.7.html"></iframe>
-    <iframe src="16.6.html"></iframe>
-    <iframe src="16.5.html"></iframe>
-    <iframe src="16.4.html"></iframe>
-    <iframe src="16.3.html"></iframe>
-    <iframe src="16.2.html"></iframe>
-    <iframe src="16.1.html"></iframe>
-    <iframe src="16.0.html"></iframe>
-    <iframe src="15.6.html"></iframe>
-    <iframe src="15.5.html"></iframe>
-    <iframe src="15.4.html"></iframe>
-    <iframe src="15.3.html"></iframe>
-    <iframe src="15.2.html"></iframe>
-    <iframe src="15.1.html"></iframe>
-    <iframe src="15.0.html"></iframe>
-    <iframe src="14.9.html"></iframe>
-  </body>
-</html>

fixtures/devtools/regression/next.html

@@ -1,41 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>React next</title>
-    <link rel="stylesheet" href="styles.css" />
-
-    <script type="text/javascript">
-      // Enable DevTools to inspect React inside of an <iframe>
-      // This must run before React is loaded
-      __REACT_DEVTOOLS_GLOBAL_HOOK__ = parent.__REACT_DEVTOOLS_GLOBAL_HOOK__;
-    </script>
-
-    <script src="https://unpkg.com/scheduler@next/umd/scheduler.development.js"></script>
-    <script src="https://unpkg.com/scheduler@next/umd/scheduler-tracing.development.js"></script>
-    <script src="https://unpkg.com/react@next/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@next/umd/react-dom.development.js"></script>
-    <script src="https://unpkg.com/react-cache@next/umd/react-cache.development.js"></script>
-    
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
-  </head>
-  <body>
-    <div id="root">
-      If you are seeing this message, you are likely viewing this file using the <code>file</code> protocol which does not support cross origin requests.
-      <br/><br/>
-      Use the <code>server</code> script instead:
-      <br/><br/>
-      <code>node ./fixtures/devtools/regression/server.js</code><br/>
-      <code>open <a href="http://localhost:3000/next.html">http://localhost:3000/next.html</a></code>
-    </div>
-
-    <script src="shared.js" type="text/babel"></script>
-
-    <!--
-      This is a great way to try React but it's not suitable for production.
-      It slowly compiles JSX with Babel in the browser and uses a large development build of React.
-      Learn more at https://reactjs.org/docs/getting-started.html
-    -->
-  </body>
-</html>

fixtures/devtools/regression/server.js

@@ -1,16 +0,0 @@
-#!/usr/bin/env node
-
-const finalhandler = require('finalhandler');
-const http = require('http');
-const serveStatic = require('serve-static');
-
-// Serve fixtures folder
-const serve = serveStatic(__dirname, {index: 'index.html'});
-
-// Create server
-const server = http.createServer(function onRequest(req, res) {
-  serve(req, res, finalhandler(req, res));
-});
-
-// Listen
-server.listen(3000);

fixtures/devtools/regression/shared.js

@@ -1,328 +0,0 @@
-/* eslint-disable no-fallthrough, react/react-in-jsx-scope, react/jsx-no-undef */
-/* global React ReactCache ReactDOM SchedulerTracing ScheduleTracing  */
-
-const apps = [];
-
-const pieces = React.version.split('.');
-const major =
-  pieces[0] === '0' ? parseInt(pieces[1], 10) : parseInt(pieces[0], 10);
-const minor =
-  pieces[0] === '0' ? parseInt(pieces[2], 10) : parseInt(pieces[1], 10);
-
-// Convenience wrapper to organize API features in DevTools.
-function Feature({children, label, version}) {
-  return (
-    <div className="Feature">
-      <div className="FeatureHeader">
-        <code className="FeatureCode">{label}</code>
-        <small>{version}</small>
-      </div>
-      {children}
-    </div>
-  );
-}
-
-// Simplify interaction tracing for tests below.
-let trace = null;
-if (typeof SchedulerTracing !== 'undefined') {
-  trace = SchedulerTracing.unstable_trace;
-} else if (typeof ScheduleTracing !== 'undefined') {
-  trace = ScheduleTracing.unstable_trace;
-} else {
-  trace = (_, __, callback) => callback();
-}
-
-// https://github.com/facebook/react/blob/master/CHANGELOG.md
-switch (major) {
-  case 16:
-    switch (minor) {
-      case 7:
-        if (typeof React.useState === 'function') {
-          // Hooks
-          function Hooks() {
-            const [count, setCount] = React.useState(0);
-            const incrementCount = React.useCallback(
-              () => setCount(count + 1),
-              [count]
-            );
-            return (
-              <div>
-                count: {count}{' '}
-                <button onClick={incrementCount}>increment</button>
-              </div>
-            );
-          }
-          apps.push(
-            <Feature key="Hooks" label="Hooks" version="16.7+">
-              <Hooks />
-            </Feature>
-          );
-        }
-      case 6:
-        // memo
-        function LabelComponent({label}) {
-          return <label>{label}</label>;
-        }
-        const AnonymousMemoized = React.memo(({label}) => (
-          <label>{label}</label>
-        ));
-        const Memoized = React.memo(LabelComponent);
-        const CustomMemoized = React.memo(LabelComponent);
-        CustomMemoized.displayName = 'MemoizedLabelFunction';
-        apps.push(
-          <Feature key="memo" label="memo" version="16.6+">
-            <AnonymousMemoized label="AnonymousMemoized" />
-            <Memoized label="Memoized" />
-            <CustomMemoized label="CustomMemoized" />
-          </Feature>
-        );
-
-        // Suspense
-        const loadResource = ([text, ms]) => {
-          return new Promise((resolve, reject) => {
-            setTimeout(() => {
-              resolve(text);
-            }, ms);
-          });
-        };
-        const getResourceKey = ([text, ms]) => text;
-        const Resource = ReactCache.unstable_createResource(
-          loadResource,
-          getResourceKey
-        );
-        class Suspending extends React.Component {
-          state = {useSuspense: false};
-          useSuspense = () => this.setState({useSuspense: true});
-          render() {
-            if (this.state.useSuspense) {
-              const text = Resource.read(['loaded', 2000]);
-              return text;
-            } else {
-              return <button onClick={this.useSuspense}>load data</button>;
-            }
-          }
-        }
-        apps.push(
-          <Feature key="Suspense" label="Suspense" version="16.6+">
-            <React.Suspense fallback={<div>loading...</div>}>
-              <Suspending />
-            </React.Suspense>
-          </Feature>
-        );
-
-        // lazy
-        const LazyWithDefaultProps = React.lazy(
-          () =>
-            new Promise(resolve => {
-              function FooWithDefaultProps(props) {
-                return (
-                  <h1>
-                    {props.greeting}, {props.name}
-                  </h1>
-                );
-              }
-              FooWithDefaultProps.defaultProps = {
-                name: 'World',
-                greeting: 'Bonjour',
-              };
-              resolve({
-                default: FooWithDefaultProps,
-              });
-            })
-        );
-        apps.push(
-          <Feature key="lazy" label="lazy" version="16.6+">
-            <React.Suspense fallback={<div>loading...</div>}>
-              <LazyWithDefaultProps greeting="Hello" />
-            </React.Suspense>
-          </Feature>
-        );
-      case 5:
-      case 4:
-        // unstable_Profiler
-        class ProfilerChild extends React.Component {
-          state = {count: 0};
-          incrementCount = () =>
-            this.setState(prevState => ({count: prevState.count + 1}));
-          render() {
-            return (
-              <div>
-                count: {this.state.count}{' '}
-                <button onClick={this.incrementCount}>increment</button>
-              </div>
-            );
-          }
-        }
-        const onRender = (...args) => {};
-        const Profiler = React.unstable_Profiler || React.Profiler;
-        apps.push(
-          <Feature
-            key="unstable_Profiler"
-            label="unstable_Profiler"
-            version="16.4+">
-            <Profiler id="count" onRender={onRender}>
-              <div>
-                <ProfilerChild />
-              </div>
-            </Profiler>
-          </Feature>
-        );
-      case 3:
-        // createContext()
-        const LocaleContext = React.createContext();
-        LocaleContext.displayName = 'LocaleContext';
-        const ThemeContext = React.createContext();
-        apps.push(
-          <Feature key="createContext" label="createContext" version="16.3+">
-            <ThemeContext.Provider value="blue">
-              <ThemeContext.Consumer>
-                {theme => <div>theme: {theme}</div>}
-              </ThemeContext.Consumer>
-            </ThemeContext.Provider>
-            <LocaleContext.Provider value="en-US">
-              <LocaleContext.Consumer>
-                {locale => <div>locale: {locale}</div>}
-              </LocaleContext.Consumer>
-            </LocaleContext.Provider>
-          </Feature>
-        );
-
-        // forwardRef()
-        const AnonymousFunction = React.forwardRef((props, ref) => (
-          <div ref={ref}>{props.children}</div>
-        ));
-        const NamedFunction = React.forwardRef(function named(props, ref) {
-          return <div ref={ref}>{props.children}</div>;
-        });
-        const CustomName = React.forwardRef((props, ref) => (
-          <div ref={ref}>{props.children}</div>
-        ));
-        CustomName.displayName = 'CustomNameForwardRef';
-        apps.push(
-          <Feature key="forwardRef" label="forwardRef" version="16.3+">
-            <AnonymousFunction>AnonymousFunction</AnonymousFunction>
-            <NamedFunction>NamedFunction</NamedFunction>
-            <CustomName>CustomName</CustomName>
-          </Feature>
-        );
-
-        // StrictMode
-        class StrictModeChild extends React.Component {
-          render() {
-            return 'StrictModeChild';
-          }
-        }
-        apps.push(
-          <Feature key="StrictMode" label="StrictMode" version="16.3+">
-            <React.StrictMode>
-              <StrictModeChild />
-            </React.StrictMode>
-          </Feature>
-        );
-
-        // unstable_AsyncMode (later renamed to unstable_ConcurrentMode, then ConcurrentMode)
-        const ConcurrentMode =
-          React.ConcurrentMode ||
-          React.unstable_ConcurrentMode ||
-          React.unstable_AsyncMode;
-        apps.push(
-          <Feature
-            key="AsyncMode/ConcurrentMode"
-            label="AsyncMode/ConcurrentMode"
-            version="16.3+">
-            <ConcurrentMode>
-              <div>
-                unstable_AsyncMode was added in 16.3, renamed to
-                unstable_ConcurrentMode in 16.5, and then renamed to
-                ConcurrentMode in 16.7
-              </div>
-            </ConcurrentMode>
-          </Feature>
-        );
-      case 2:
-        // Fragment
-        apps.push(
-          <Feature key="Fragment" label="Fragment" version="16.4+">
-            <React.Fragment>
-              <div>one</div>
-              <div>two</div>
-            </React.Fragment>
-          </Feature>
-        );
-      case 1:
-      case 0:
-      default:
-        break;
-    }
-    break;
-  case 15:
-    break;
-  case 14:
-    break;
-  default:
-    break;
-}
-
-function Even() {
-  return <small>(even)</small>;
-}
-
-// Simple stateful app shared by all React versions
-class SimpleApp extends React.Component {
-  state = {count: 0};
-  incrementCount = () => {
-    const updaterFn = prevState => ({count: prevState.count + 1});
-    trace('Updating count', performance.now(), () => this.setState(updaterFn));
-  };
-  render() {
-    const {count} = this.state;
-    return (
-      <div>
-        {count % 2 === 0 ? (
-          <span>
-            count: {count} <Even />
-          </span>
-        ) : (
-          <span>count: {count}</span>
-        )}{' '}
-        <button onClick={this.incrementCount}>increment</button>
-      </div>
-    );
-  }
-}
-apps.push(
-  <Feature key="Simple stateful app" label="Simple stateful app" version="any">
-    <SimpleApp />
-  </Feature>
-);
-
-// This component, with the version prop, helps organize DevTools at a glance.
-function TopLevelWrapperForDevTools({version}) {
-  let header = <h1>React {version}</h1>;
-  if (version.includes('canary')) {
-    const commitSha = version.match(/.+canary-(.+)/)[1];
-    header = (
-      <h1>
-        React canary{' '}
-        <a href={`https://github.com/facebook/react/commit/${commitSha}`}>
-          {commitSha}
-        </a>
-      </h1>
-    );
-  } else if (version.includes('alpha')) {
-    header = <h1>React next</h1>;
-  }
-
-  return (
-    <div>
-      {header}
-      {apps}
-    </div>
-  );
-}
-TopLevelWrapperForDevTools.displayName = 'React';
-
-ReactDOM.render(
-  <TopLevelWrapperForDevTools version={React.version} />,
-  document.getElementById('root')
-);

fixtures/devtools/regression/styles.css

@@ -1,37 +0,0 @@
-body {
-  font-family: sans-serif;
-  font-size: 12px;
-}
-
-h1 {
-  margin: 0;
-  font-size: 20px;
-}
-
-h2 {
-  margin: 1rem 0 0;
-}
-
-iframe {
-  border: 1px solid #ddd;
-  border-radius: 0.5rem;
-}
-
-code {
-  white-space: nowrap;
-}
-
-.Feature {
-  margin: 1rem 0;
-  border-bottom: 1px solid #eee;
-  padding-bottom: 1rem;
-}
-.FeatureHeader {
-  font-size: 16px;
-  margin-bottom: 0.5rem;
-}
-.FeatureCode {
-  background-color: #eee;
-  padding: 0.25rem;
-  border-radius: 0.25rem;
-}

fixtures/devtools/standalone/index.html

@@ -1,313 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="UTF-8" />
-    <title>TODO List</title>
-
-    <!-- DevTools -->
-    <script src="http://localhost:8097"></script>
-
-    <script src="https://unpkg.com/react@16/umd/react.development.js"></script>
-    <script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
-    <script src="https://unpkg.com/immutable@4.0.0-rc.12/dist/immutable.js"></script>
-
-    <!-- Don't use this in production: -->
-    <script src="https://unpkg.com/babel-standalone@6.15.0/babel.min.js"></script>
-
-    <style type="text/css">
-      .Input {
-        font-size: 1rem;
-        padding: 0.25rem;
-      }
-
-      .IconButton {
-        padding: 0.25rem;
-        border: none;
-        background: none;
-        cursor: pointer;
-      }
-
-      .List {
-        margin: 0.5rem 0 0;
-        padding: 0;
-      }
-
-      .ListItem {
-        list-style-type: none;
-      }
-
-      .Label {
-        cursor: pointer;
-        padding: 0.25rem;
-        color: #555;
-      }
-      .Label:hover {
-        color: #000;
-      }
-
-      .IconButton {
-        padding: 0.25rem;
-        border: none;
-        background: none;
-        cursor: pointer;
-      }
-    </style>
-  </head>
-  <body>
-    <div id="root"></div>
-    <script type="text/babel">
-      const { Fragment, useCallback, useState } = React;
-
-      function List(props) {
-        const [newItemText, setNewItemText] = useState("");
-        const [items, setItems] = useState([
-          { id: 1, isComplete: true, text: "First" },
-          { id: 2, isComplete: true, text: "Second" },
-          { id: 3, isComplete: false, text: "Third" }
-        ]);
-        const [uid, setUID] = useState(4);
-
-        const handleClick = useCallback(() => {
-          if (newItemText !== "") {
-            setItems([
-              ...items,
-              {
-                id: uid,
-                isComplete: false,
-                text: newItemText
-              }
-            ]);
-            setUID(uid + 1);
-            setNewItemText("");
-          }
-        }, [newItemText, items, uid]);
-
-        const handleKeyPress = useCallback(
-          event => {
-            if (event.key === "Enter") {
-              handleClick();
-            }
-          },
-          [handleClick]
-        );
-
-        const handleChange = useCallback(
-          event => {
-            setNewItemText(event.currentTarget.value);
-          },
-          [setNewItemText]
-        );
-
-        const removeItem = useCallback(
-          itemToRemove => setItems(items.filter(item => item !== itemToRemove)),
-          [items]
-        );
-
-        const toggleItem = useCallback(
-          itemToToggle => {
-            const index = items.indexOf(itemToToggle);
-
-            setItems(
-              items
-                .slice(0, index)
-                .concat({
-                  ...itemToToggle,
-                  isComplete: !itemToToggle.isComplete
-                })
-                .concat(items.slice(index + 1))
-            );
-          },
-          [items]
-        );
-
-        return (
-          <Fragment>
-            <h1>List</h1>
-            <input
-              type="text"
-              placeholder="New list item..."
-              className="Input"
-              value={newItemText}
-              onChange={handleChange}
-              onKeyPress={handleKeyPress}
-            />
-            <button
-              className="IconButton"
-              disabled={newItemText === ""}
-              onClick={handleClick}
-            >
-              <span role="img" aria-label="Add item">
-                ➕
-              </span>
-            </button>
-            <ul className="List">
-              {items.map(item => (
-                <ListItem
-                  key={item.id}
-                  item={item}
-                  removeItem={removeItem}
-                  toggleItem={toggleItem}
-                />
-              ))}
-            </ul>
-          </Fragment>
-        );
-      }
-
-      function ListItem({ item, removeItem, toggleItem }) {
-        const handleDelete = useCallback(() => {
-          removeItem(item);
-        }, [item, removeItem]);
-
-        const handleToggle = useCallback(() => {
-          toggleItem(item);
-        }, [item, toggleItem]);
-
-        return (
-          <li className="ListItem">
-            <button className="IconButton" onClick={handleDelete}>
-              🗑
-            </button>
-            <label className="Label">
-              <input
-                className="Input"
-                checked={item.isComplete}
-                onChange={handleToggle}
-                type="checkbox"
-              />{" "}
-              {item.text}
-            </label>
-          </li>
-        );
-      }
-
-      function SimpleValues() {
-        return (
-          <ChildComponent
-            string="abc"
-            emptyString=""
-            number={123}
-            undefined={undefined}
-            null={null}
-            nan={NaN}
-            infinity={Infinity}
-            true={true}
-            false={false}
-          />
-        );
-      }
-
-      class Custom {
-        _number = 42;
-        get number() {
-          return this._number;
-        }
-      }
-
-      function CustomObject() {
-        return <ChildComponent customObject={new Custom()} />;
-      }
-
-      const object = {
-        string: "abc",
-        longString: "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKJLMNOPQRSTUVWXYZ1234567890",
-        emptyString: "",
-        number: 123,
-        boolean: true,
-        undefined: undefined,
-        null: null
-      };
-
-      function ObjectProps() {
-        return (
-          <ChildComponent
-            object={{
-              outer: {
-                inner: object
-              }
-            }}
-            array={["first", "second", "third"]}
-            objectInArray={[object]}
-            arrayInObject={{ array: ["first", "second", "third"] }}
-            deepObject={{
-              // Known limitation: we won't go deeper than several levels.
-              // In the future, we might offer a way to request deeper access on demand.
-              a: {
-                b: {
-                  c: {
-                    d: {
-                      e: {
-                        f: {
-                          g: {
-                            h: {
-                              i: {
-                                j: 10
-                              }
-                            }
-                          }
-                        }
-                      }
-                    }
-                  }
-                }
-              }
-            }}
-          />
-        );
-      }
-
-      const set = new Set(['abc', 123]);
-      const map = new Map([['name', 'Brian'], ['food', 'sushi']]);
-      const setOfSets = new Set([new Set(['a', 'b', 'c']), new Set([1, 2, 3])]);
-      const mapOfMaps = new Map([['first', map], ['second', map]]);
-      const typedArray = Int8Array.from([100, -100, 0]);
-      const immutable = Immutable.fromJS({
-        a: [{ hello: 'there' }, 'fixed', true],
-        b: 123,
-        c: {
-          '1': 'xyz',
-          xyz: 1,
-        },
-      });
-
-      function UnserializableProps() {
-        return (
-          <ChildComponent
-            map={map}
-            set={set}
-            mapOfMaps={mapOfMaps}
-            setOfSets={setOfSets}
-            typedArray={typedArray}
-            immutable={immutable}
-          />
-        );
-      }
-
-      function ChildComponent(props: any) {
-        return null;
-      }
-
-      function InspectableElements() {
-        return (
-          <Fragment>
-            <SimpleValues />
-            <ObjectProps />
-            <UnserializableProps />
-            <CustomObject />
-          </Fragment>
-        );
-      }
-
-      function App() {
-        return (
-          <Fragment>
-            <List />
-            <InspectableElements />
-          </Fragment>
-        );
-      }
-
-      ReactDOM.render(<App />, document.getElementById("root"));
-    </script>
-  </body>
-</html>

fixtures/dom/.gitignore

@@ -8,16 +8,9 @@ coverage
 
 # production
 build
-public/scheduler-unstable_mock.development.js
-public/scheduler-unstable_mock.production.min.js
 public/react.development.js
-public/react.production.min.js
 public/react-dom.development.js
-public/react-dom.production.min.js
 public/react-dom-server.browser.development.js
-public/react-dom-server.browser.production.min.js
-public/react-dom-test-utils.development.js
-public/react-dom-test-utils.production.min.js
 
 # misc
 .DS_Store

fixtures/dom/package.json

@@ -7,11 +7,9 @@
   },
   "dependencies": {
     "@babel/standalone": "^7.0.0",
-    "art": "^0.10.3",
     "classnames": "^2.2.5",
     "codemirror": "^5.40.0",
     "core-js": "^2.4.1",
-    "jest-diff": "^24.8.0",
     "prop-types": "^15.6.0",
     "query-string": "^4.2.3",
     "react": "^15.4.1",
@@ -20,7 +18,7 @@
   },
   "scripts": {
     "start": "react-scripts start",
-    "prestart": "cp ../../build/node_modules/scheduler/umd/scheduler-unstable_mock.development.js ../../build/node_modules/scheduler/umd/scheduler-unstable_mock.production.min.js ../../build/node_modules/react/umd/react.development.js ../../build/node_modules/react-dom/umd/react-dom.development.js ../../build/node_modules/react/umd/react.production.min.js ../../build/node_modules/react-dom/umd/react-dom.production.min.js ../../build/node_modules/react-dom/umd/react-dom-server.browser.development.js ../../build/node_modules/react-dom/umd/react-dom-server.browser.production.min.js ../../build/node_modules/react-dom/umd/react-dom-test-utils.development.js ../../build/node_modules/react-dom/umd/react-dom-test-utils.production.min.js public/ && cp -a ../../build/node_modules/. node_modules",
+    "prestart": "cp ../../build/dist/react.development.js ../../build/dist/react-dom.development.js ../../build/dist/react-dom-server.browser.development.js public/",
     "build": "react-scripts build && cp build/index.html build/200.html",
     "test": "react-scripts test --env=jsdom",
     "eject": "react-scripts eject"

fixtures/dom/public/act-dom.html

@@ -1,44 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <title>sanity test for ReactTestUtils.act</title>
-  </head>
-  <body>
-    this page tests whether act runs properly in a browser.
-    <br />
-    your console should say "5"
-    <script src="scheduler-unstable_mock.development.js"></script>
-    <script src="react.development.js"></script>
-    <script type="text/javascript">
-      window.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler =
-        window.SchedulerMock;
-    </script>
-    <script src="react-dom.development.js"></script>
-    <script src="react-dom-test-utils.development.js"></script>
-    <script>
-      // from ReactTestUtilsAct-test.js
-      function App() {
-        let [state, setState] = React.useState(0);
-        async function ticker() {
-          await null;
-          setState(x => x + 1);
-        }
-        React.useEffect(() => {
-          ticker();
-        }, [Math.min(state, 4)]);
-        return state;
-      }
-
-      async function testAsyncAct() {
-        const el = document.createElement("div");
-        await ReactTestUtils.act(async () => {
-          ReactDOM.render(React.createElement(App), el);
-        });
-        // all 5 ticks present and accounted for
-        console.log(el.innerHTML);
-      }
-
-      testAsyncAct();
-    </script>
-  </body>
-</html>

fixtures/dom/public/renderer.js

@@ -13,30 +13,6 @@
   var renders = 0;
   var failed = false;
 
-  var needsReactDOM = getBooleanQueryParam('needsReactDOM');
-  var needsCreateElement = getBooleanQueryParam('needsCreateElement');
-
-  function unmountComponent(node) {
-    // ReactDOM was moved into a separate package in 0.14
-    if (needsReactDOM) {
-      ReactDOM.unmountComponentAtNode(node);
-    } else if (React.unmountComponentAtNode) {
-      React.unmountComponentAtNode(node);
-    } else {
-      // Unmounting for React 0.4 and lower
-      React.unmountAndReleaseReactRootNode(node);
-    }
-  }
-
-  function createElement(value) {
-    // React.createElement replaced function invocation in 0.12
-    if (needsCreateElement) {
-      return React.createElement(value);
-    } else {
-      return value();
-    }
-  }
-
   function getQueryParam(key) {
     var pattern = new RegExp(key + '=([^&]+)(&|$)');
     var matches = window.location.search.match(pattern);
@@ -59,56 +35,20 @@
   function prerender() {
     setStatus('Generating markup');
 
-    return Promise.resolve()
-      .then(function() {
-        const element = createElement(Fixture);
+    output.innerHTML = ReactDOMServer.renderToString(
+      React.createElement(Fixture)
+    );
 
-        // Server rendering moved to a separate package along with ReactDOM
-        // in 0.14.0
-        if (needsReactDOM) {
-          return ReactDOMServer.renderToString(element);
-        }
-
-        // React.renderComponentToString was renamed in 0.12
-        if (React.renderToString) {
-          return React.renderToString(element);
-        }
-
-        // React.renderComponentToString became synchronous in React 0.9.0
-        if (React.renderComponentToString.length === 1) {
-          return React.renderComponentToString(element);
-        }
-
-        // Finally, React 0.4 and lower emits markup in a callback
-        return new Promise(function(resolve) {
-          React.renderComponentToString(element, resolve);
-        });
-      })
-      .then(function(string) {
-        output.innerHTML = string;
-        setStatus('Markup only (No React)');
-      })
-      .catch(handleError);
+    setStatus('Markup only (No React)');
   }
 
   function render() {
     setStatus('Hydrating');
 
-    var element = createElement(Fixture);
-
-    // ReactDOM was split out into another package in 0.14
-    if (needsReactDOM) {
-      // Hydration changed to a separate method in React 16
-      if (ReactDOM.hydrate) {
-        ReactDOM.hydrate(element, output);
-      } else {
-        ReactDOM.render(element, output);
-      }
-    } else if (React.render) {
-      // React.renderComponent was renamed in 0.12
-      React.render(element, output);
+    if (ReactDOM.hydrate) {
+      ReactDOM.hydrate(React.createElement(Fixture), output);
     } else {
-      React.renderComponent(element, output);
+      ReactDOM.render(React.createElement(Fixture), output);
     }
 
     setStatus(renders > 0 ? 'Re-rendered (' + renders + 'x)' : 'Hydrated');
@@ -145,17 +85,17 @@
       setStatus('Failed');
       output.innerHTML = 'Please name your root component "Fixture"';
     } else {
-      prerender().then(function() {
-        if (getBooleanQueryParam('hydrate')) {
-          render();
-        }
-      });
+      prerender();
+
+      if (getBooleanQueryParam('hydrate')) {
+        render();
+      }
     }
   }
 
   function reloadFixture(code) {
     renders = 0;
-    unmountComponent(output);
+    ReactDOM.unmountComponentAtNode(output);
     injectFixture(code);
   }
 
@@ -169,12 +109,12 @@
 
   loadScript(getQueryParam('reactPath'))
     .then(function() {
-      if (needsReactDOM) {
-        return Promise.all([
-          loadScript(getQueryParam('reactDOMPath')),
-          loadScript(getQueryParam('reactDOMServerPath')),
-        ]);
-      }
+      return getBooleanQueryParam('needsReactDOM')
+        ? loadScript(getQueryParam('reactDOMPath'))
+        : null;
+    })
+    .then(function() {
+      return loadScript(getQueryParam('reactDOMServerPath'));
     })
     .then(function() {
       if (failed) {

fixtures/dom/src/__tests__/nested-act-test.js

@@ -1,97 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @emails react-core
- */
-
-let React;
-let TestUtils;
-let TestRenderer;
-
-global.__DEV__ = process.env.NODE_ENV !== 'production';
-
-expect.extend(require('../toWarnDev'));
-
-describe('unmocked scheduler', () => {
-  beforeEach(() => {
-    jest.resetModules();
-    React = require('react');
-    TestUtils = require('react-dom/test-utils');
-    TestRenderer = require('react-test-renderer');
-  });
-
-  it('flushes work only outside the outermost act() corresponding to its own renderer', () => {
-    let log = [];
-    function Effecty() {
-      React.useEffect(() => {
-        log.push('called');
-      }, []);
-      return null;
-    }
-    // in legacy mode, this tests whether an act only flushes its own effects
-    TestRenderer.act(() => {
-      TestUtils.act(() => {
-        TestRenderer.create(<Effecty />);
-      });
-      expect(log).toEqual([]);
-    });
-    expect(log).toEqual(['called']);
-
-    log = [];
-    // for doublechecking, we flip it inside out, and assert on the outermost
-    TestUtils.act(() => {
-      TestRenderer.act(() => {
-        TestRenderer.create(<Effecty />);
-      });
-      expect(log).toEqual(['called']);
-    });
-    expect(log).toEqual(['called']);
-  });
-});
-
-describe('mocked scheduler', () => {
-  beforeEach(() => {
-    jest.resetModules();
-    jest.mock('scheduler', () =>
-      require.requireActual('scheduler/unstable_mock')
-    );
-    React = require('react');
-    TestUtils = require('react-dom/test-utils');
-    TestRenderer = require('react-test-renderer');
-  });
-
-  afterEach(() => {
-    jest.unmock('scheduler');
-  });
-
-  it('flushes work only outside the outermost act()', () => {
-    let log = [];
-    function Effecty() {
-      React.useEffect(() => {
-        log.push('called');
-      }, []);
-      return null;
-    }
-    // with a mocked scheduler, this tests whether it flushes all work only on the outermost act
-    TestRenderer.act(() => {
-      TestUtils.act(() => {
-        TestRenderer.create(<Effecty />);
-      });
-      expect(log).toEqual([]);
-    });
-    expect(log).toEqual(['called']);
-
-    log = [];
-    // for doublechecking, we flip it inside out, and assert on the outermost
-    TestUtils.act(() => {
-      TestRenderer.act(() => {
-        TestRenderer.create(<Effecty />);
-      });
-      expect(log).toEqual([]);
-    });
-    expect(log).toEqual(['called']);
-  });
-});

fixtures/dom/src/__tests__/wrong-act-test.js

@@ -1,197 +0,0 @@
-/**
- * Copyright (c) Facebook, Inc. and its affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @emails react-core
- */
-
-let React;
-let ReactDOM;
-let ReactART;
-let ARTSVGMode;
-let ARTCurrentMode;
-let TestUtils;
-let TestRenderer;
-let ARTTest;
-
-global.__DEV__ = process.env.NODE_ENV !== 'production';
-global.__EXPERIMENTAL__ = process.env.RELEASE_CHANNEL === 'experimental';
-
-expect.extend(require('../toWarnDev'));
-
-function App(props) {
-  return 'hello world';
-}
-
-beforeEach(() => {
-  jest.resetModules();
-  React = require('react');
-  ReactDOM = require('react-dom');
-  ReactART = require('react-art');
-  ARTSVGMode = require('art/modes/svg');
-  ARTCurrentMode = require('art/modes/current');
-  TestUtils = require('react-dom/test-utils');
-  TestRenderer = require('react-test-renderer');
-
-  ARTCurrentMode.setCurrent(ARTSVGMode);
-
-  ARTTest = function ARTTestComponent(props) {
-    return (
-      <ReactART.Surface width={150} height={200}>
-        <ReactART.Group>
-          <ReactART.Shape
-            d="M0,0l50,0l0,50l-50,0z"
-            fill={new ReactART.LinearGradient(['black', 'white'])}
-            key="a"
-            width={50}
-            height={50}
-            x={50}
-            y={50}
-            opacity={0.1}
-          />
-          <ReactART.Shape
-            fill="#3C5A99"
-            key="b"
-            scale={0.5}
-            x={50}
-            y={50}
-            title="This is an F"
-            cursor="pointer">
-            M64.564,38.583H54l0.008-5.834c0-3.035,0.293-4.666,4.657-4.666
-            h5.833V16.429h-9.33c-11.213,0-15.159,5.654-15.159,15.16v6.994
-            h-6.99v11.652h6.99v33.815H54V50.235h9.331L64.564,38.583z
-          </ReactART.Shape>
-        </ReactART.Group>
-      </ReactART.Surface>
-    );
-  };
-});
-
-it("doesn't warn when you use the right act + renderer: dom", () => {
-  TestUtils.act(() => {
-    TestUtils.renderIntoDocument(<App />);
-  });
-});
-
-it("doesn't warn when you use the right act + renderer: test", () => {
-  TestRenderer.act(() => {
-    TestRenderer.create(<App />);
-  });
-});
-
-it('resets correctly across renderers', () => {
-  function Effecty() {
-    React.useEffect(() => {}, []);
-    return null;
-  }
-  TestUtils.act(() => {
-    TestRenderer.act(() => {});
-    expect(() => {
-      TestRenderer.create(<Effecty />);
-    }).toWarnDev(["It looks like you're using the wrong act()"], {
-      withoutStack: true,
-    });
-  });
-});
-
-it('warns when using the wrong act version - test + dom: render', () => {
-  expect(() => {
-    TestRenderer.act(() => {
-      TestUtils.renderIntoDocument(<App />);
-    });
-  }).toWarnDev(["It looks like you're using the wrong act()"], {
-    withoutStack: true,
-  });
-});
-
-it('warns when using the wrong act version - test + dom: updates', () => {
-  let setCtr;
-  function Counter(props) {
-    const [ctr, _setCtr] = React.useState(0);
-    setCtr = _setCtr;
-    return ctr;
-  }
-  TestUtils.renderIntoDocument(<Counter />);
-  expect(() => {
-    TestRenderer.act(() => {
-      setCtr(1);
-    });
-  }).toWarnDev(["It looks like you're using the wrong act()"]);
-});
-
-it('warns when using the wrong act version - dom + test: .create()', () => {
-  expect(() => {
-    TestUtils.act(() => {
-      TestRenderer.create(<App />);
-    });
-  }).toWarnDev(["It looks like you're using the wrong act()"], {
-    withoutStack: true,
-  });
-});
-
-it('warns when using the wrong act version - dom + test: .update()', () => {
-  const root = TestRenderer.create(<App key="one" />);
-  expect(() => {
-    TestUtils.act(() => {
-      root.update(<App key="two" />);
-    });
-  }).toWarnDev(["It looks like you're using the wrong act()"], {
-    withoutStack: true,
-  });
-});
-
-it('warns when using the wrong act version - dom + test: updates', () => {
-  let setCtr;
-  function Counter(props) {
-    const [ctr, _setCtr] = React.useState(0);
-    setCtr = _setCtr;
-    return ctr;
-  }
-  TestRenderer.create(<Counter />);
-  expect(() => {
-    TestUtils.act(() => {
-      setCtr(1);
-    });
-  }).toWarnDev(["It looks like you're using the wrong act()"]);
-});
-
-it('does not warn when nesting react-act inside react-dom', () => {
-  TestUtils.act(() => {
-    TestUtils.renderIntoDocument(<ARTTest />);
-  });
-});
-
-it('does not warn when nesting react-act inside react-test-renderer', () => {
-  TestRenderer.act(() => {
-    TestRenderer.create(<ARTTest />);
-  });
-});
-
-it("doesn't warn if you use nested acts from different renderers", () => {
-  TestRenderer.act(() => {
-    TestUtils.act(() => {
-      TestRenderer.create(<App />);
-    });
-  });
-});
-
-if (__EXPERIMENTAL__) {
-  it('warns when using createRoot() + .render', () => {
-    const root = ReactDOM.createRoot(document.createElement('div'));
-    expect(() => {
-      TestRenderer.act(() => {
-        root.render(<App />);
-      });
-    }).toWarnDev(
-      [
-        'In Concurrent or Sync modes, the "scheduler" module needs to be mocked',
-        "It looks like you're using the wrong act()",
-      ],
-      {
-        withoutStack: true,
-      }
-    );
-  });
-}

fixtures/dom/src/components/App.js

@@ -4,15 +4,13 @@ import '../style.css';
 
 const React = window.React;
 
-class App extends React.Component {
-  render() {
-    return (
-      <div>
-        <Header />
-        <Fixtures />
-      </div>
-    );
-  }
+function App() {
+  return (
+    <div>
+      <Header />
+      <Fixtures />
+    </div>
+  );
 }
 
 export default App;

fixtures/dom/src/components/Header.js

@@ -1,6 +1,5 @@
 import {parse, stringify} from 'query-string';
-import VersionPicker from './VersionPicker';
-
+import getVersionTags from '../tags';
 const React = window.React;
 
 class Header extends React.Component {
@@ -8,27 +7,24 @@ class Header extends React.Component {
     super(props, context);
     const query = parse(window.location.search);
     const version = query.version || 'local';
-    const production = query.production || false;
     const versions = [version];
-
-    this.state = {version, versions, production};
+    this.state = {version, versions};
   }
-  handleVersionChange(version) {
+  componentWillMount() {
+    getVersionTags().then(tags => {
+      let versions = tags.map(tag => tag.name.slice(1));
+      versions = [`local`, ...versions];
+      this.setState({versions});
+    });
+  }
+  handleVersionChange(event) {
     const query = parse(window.location.search);
-    query.version = version;
+    query.version = event.target.value;
     if (query.version === 'local') {
       delete query.version;
     }
     window.location.search = stringify(query);
   }
-  handleProductionChange(event) {
-    const query = parse(window.location.search);
-    query.production = event.target.checked;
-    if (!query.production) {
-      delete query.production;
-    }
-    window.location.search = stringify(query);
-  }
   handleFixtureChange(event) {
     window.location.pathname = event.target.value;
   }
@@ -43,23 +39,10 @@ class Header extends React.Component {
               width="20"
               height="20"
             />
-            <a href="/">
-              DOM Test Fixtures (v
-              {React.version})
-            </a>
+            <a href="/">DOM Test Fixtures (v{React.version})</a>
           </span>
 
           <div className="header-controls">
-            <input
-              id="react_production"
-              className="header__checkbox"
-              type="checkbox"
-              checked={this.state.production}
-              onChange={this.handleProductionChange}
-            />
-            <label htmlFor="react_production" className="header__label">
-              Production
-            </label>
             <label htmlFor="example">
               <span className="sr-only">Select an example</span>
               <select
@@ -88,14 +71,17 @@ class Header extends React.Component {
                 <option value="/suspense">Suspense</option>
               </select>
             </label>
-            <label htmlFor="global_version">
+            <label htmlFor="react_version">
               <span className="sr-only">Select a version to test</span>
-              <VersionPicker
-                id="global_version"
-                name="global_version"
-                version={this.state.version}
-                onChange={this.handleVersionChange}
-              />
+              <select
+                value={this.state.version}
+                onChange={this.handleVersionChange}>
+                {this.state.versions.map(version => (
+                  <option key={version} value={version}>
+                    {version}
+                  </option>
+                ))}
+              </select>
             </label>
           </div>
         </div>

fixtures/dom/src/components/VersionPicker.js

@@ -1,41 +0,0 @@
-import getVersionTags from '../tags';
-
-const React = window.React;
-
-class VersionPicker extends React.Component {
-  constructor(props, context) {
-    super(props, context);
-    const version = props.version || 'local';
-    const versions = [version];
-    this.state = {versions};
-  }
-
-  componentWillMount() {
-    getVersionTags().then(tags => {
-      let versions = tags.map(tag => tag.name.slice(1));
-      versions = [`local`, ...versions];
-      this.setState({versions});
-    });
-  }
-
-  onChange = event => {
-    this.props.onChange(event.target.value);
-  };
-
-  render() {
-    const {version, id, name} = this.props;
-    const {versions} = this.state;
-
-    return (
-      <select id={id} name={name} value={version} onChange={this.onChange}>
-        {versions.map(version => (
-          <option key={version} value={version}>
-            {version}
-          </option>
-        ))}
-      </select>
-    );
-  }
-}
-
-export default VersionPicker;

fixtures/dom/src/components/fixtures/hydration/Code.js

@@ -1,5 +1,3 @@
-import {findDOMNode} from '../../../find-dom-node';
-
 const React = window.React;
 
 export class CodeEditor extends React.Component {
@@ -8,8 +6,6 @@ export class CodeEditor extends React.Component {
   }
 
   componentDidMount() {
-    this.textarea = findDOMNode(this);
-
     // Important: CodeMirror incorrectly lays out the editor
     // if it executes before CSS has loaded
     // https://github.com/graphql/graphiql/issues/33#issuecomment-318188555
@@ -48,6 +44,7 @@ export class CodeEditor extends React.Component {
   render() {
     return (
       <textarea
+        ref={ref => (this.textarea = ref)}
         defaultValue={this.props.code}
         autoComplete="off"
         hidden={true}
@@ -75,10 +72,6 @@ export class CodeError extends React.Component {
     if (supportsDetails) {
       const [summary, ...body] = error.message.split(/\n+/g);
 
-      if (body.length >= 0) {
-        return <div className={className}>{summary}</div>;
-      }
-
       return (
         <details className={className}>
           <summary>{summary}</summary>

fixtures/dom/src/components/fixtures/hydration/hydration.css

@@ -22,7 +22,6 @@
 
 .hydration-options label {
   font-size: 13px;
-  margin-right: 10px;
 }
 
 .hydration-options input[type=checkbox] {
@@ -31,11 +30,6 @@
   vertical-align: middle;
 }
 
-.hydration-options select {
-  margin-left: 10px;
-  max-width: 100px;
-}
-
 .hydration .CodeMirror {
   font-size: 13px;
   padding-top: 8px;

fixtures/dom/src/components/fixtures/hydration/index.js

@@ -1,5 +1,4 @@
 import './hydration.css';
-import VersionPicker from '../../VersionPicker';
 import {SAMPLE_CODE} from './data';
 import {CodeEditor, CodeError} from './Code';
 import {compile} from './code-transformer';
@@ -7,17 +6,12 @@ import {reactPaths} from '../../../react-loader';
 import qs from 'query-string';
 
 const React = window.React;
-// The Hydration fixture can render at a different version than the parent
-// app. This allows rendering for versions of React older than the DOM
-// test fixtures can support.
-const initialVersion = qs.parse(window.location.search).version || 'local';
 
 class Hydration extends React.Component {
   state = {
     error: null,
     code: SAMPLE_CODE,
     hydrate: true,
-    version: initialVersion,
   };
 
   ready = false;
@@ -78,14 +72,9 @@ class Hydration extends React.Component {
     });
   };
 
-  setVersion = version => {
-    this.setState({version});
-  };
-
   render() {
-    const {code, error, hydrate, version} = this.state;
-    const src =
-      '/renderer.html?' + qs.stringify({hydrate, ...reactPaths(version)});
+    const {code, error, hydrate} = this.state;
+    const src = '/renderer.html?' + qs.stringify({hydrate, ...reactPaths()});
 
     return (
       <div className="hydration">
@@ -100,16 +89,6 @@ class Hydration extends React.Component {
             />
             Auto-Hydrate
           </label>
-
-          <label htmlFor="hydration_version">
-            Version:
-            <VersionPicker
-              id="hydration_version"
-              name="hyration_version"
-              version={version}
-              onChange={this.setVersion}
-            />
-          </label>
         </header>
 
         <CodeEditor code={code} onChange={this.setCode} />

fixtures/dom/src/components/fixtures/mouse-events/index.js

@@ -1,6 +1,5 @@
 import FixtureSet from '../../FixtureSet';
 import MouseMovement from './mouse-movement';
-import MouseEnter from './mouse-enter';
 
 const React = window.React;
 
@@ -9,7 +8,6 @@ class MouseEvents extends React.Component {
     return (
       <FixtureSet title="Mouse Events">
         <MouseMovement />
-        <MouseEnter />
       </FixtureSet>
     );
   }

fixtures/dom/src/components/fixtures/mouse-events/mouse-enter.js

@@ -1,73 +0,0 @@
-import TestCase from '../../TestCase';
-
-const React = window.React;
-const ReactDOM = window.ReactDOM;
-
-const MouseEnter = () => {
-  const containerRef = React.useRef();
-
-  React.useEffect(function() {
-    const hostEl = containerRef.current;
-    ReactDOM.render(<MouseEnterDetect />, hostEl, () => {
-      ReactDOM.render(<MouseEnterDetect />, hostEl.childNodes[1]);
-    });
-  }, []);
-
-  return (
-    <TestCase
-      title="Mouse Enter"
-      description=""
-      affectedBrowsers="Chrome, Safari, Firefox">
-      <TestCase.Steps>
-        <li>Mouse enter the boxes below, from different borders</li>
-      </TestCase.Steps>
-      <TestCase.ExpectedResult>
-        Mouse enter call count should equal to 1; <br />
-        Issue{' '}
-        <a
-          rel="noopener noreferrer"
-          target="_blank"
-          href="https://github.com/facebook/react/issues/16763">
-          #16763
-        </a>{' '}
-        should not happen.
-        <br />
-      </TestCase.ExpectedResult>
-      <div ref={containerRef} />
-    </TestCase>
-  );
-};
-
-const MouseEnterDetect = () => {
-  const [log, setLog] = React.useState({});
-  const firstEl = React.useRef();
-  const siblingEl = React.useRef();
-
-  const onMouseEnter = e => {
-    const timeStamp = e.timeStamp;
-    setLog(log => {
-      const callCount = 1 + (log.timeStamp === timeStamp ? log.callCount : 0);
-      return {
-        timeStamp,
-        callCount,
-      };
-    });
-  };
-
-  return (
-    <React.Fragment>
-      <div
-        ref={firstEl}
-        onMouseEnter={onMouseEnter}
-        style={{
-          border: '1px solid #d9d9d9',
-          padding: '20px 20px',
-        }}>
-        Mouse enter call count: {log.callCount || ''}
-      </div>
-      <div ref={siblingEl} />
-    </React.Fragment>
-  );
-};
-
-export default MouseEnter;

fixtures/dom/src/components/fixtures/selects/index.js

@@ -202,34 +202,6 @@ class SelectFixture extends React.Component {
             </select>
           </div>
         </TestCase>
-
-        <TestCase
-          title="A select with the size attribute should not set first option as selected"
-          relatedIssues="14239"
-          introducedIn="16.0.0">
-          <TestCase.ExpectedResult>
-            No options should be selected.
-          </TestCase.ExpectedResult>
-
-          <div className="test-fixture">
-            <select size="3">
-              <option>0</option>
-              <option>1</option>
-              <option>2</option>
-            </select>
-          </div>
-
-          <p className="footnote">
-            <b>Notes:</b> This happens if <code>size</code> is assigned after
-            options are selected. The select element picks the first item by
-            default, then it is expanded to show more options when{' '}
-            <code>size</code> is assigned, preserving the default selection.
-          </p>
-          <p className="footnote">
-            This was introduced in React 16.0.0 when options were added before
-            select attribute assignment.
-          </p>
-        </TestCase>
       </FixtureSet>
     );
   }

fixtures/dom/src/components/fixtures/suspense/index.js

@@ -46,7 +46,7 @@ class SuspendyTreeChild extends React.Component {
 
   render() {
     return (
-      <>
+      <React.Fragment>
         <Suspense fallback={<div>(display: none)</div>}>
           <div>
             <AsyncStep text={`${this.state.step} + ${this.id}`} ms={500} />
@@ -54,7 +54,7 @@ class SuspendyTreeChild extends React.Component {
           </div>
         </Suspense>
         <button onClick={this.increment}>Hide</button>
-      </>
+      </React.Fragment>
     );
   }
 }
@@ -86,22 +86,22 @@ class SuspendyTree extends React.Component {
   };
   render() {
     return (
-      <>
+      <React.Fragment>
         <div ref={this.parentContainer}>
           <div ref={this.container} />
         </div>
         <div>
           {this.container.current !== null
             ? ReactDOM.createPortal(
-                <>
+                <React.Fragment>
                   <SuspendyTreeChild>{this.props.children}</SuspendyTreeChild>
                   <button onClick={this.removeAndRestore}>Remove</button>
-                </>,
+                </React.Fragment>,
                 this.container.current
               )
             : null}
         </div>
-      </>
+      </React.Fragment>
     );
   }
 }
@@ -169,7 +169,7 @@ class TextInputFixtures extends React.Component {
               the "Go" button.
             </li>
             <li>
-              Instead of clicking "Go", which switches focus, press Command +
+              Intead of clicking "Go", which switches focus, press Command +
               Enter (or Control + Enter on Windows, Linux).
             </li>
           </TestCase.Steps>

fixtures/dom/src/components/fixtures/textareas/index.js

@@ -1,4 +1,3 @@
-import Fixture from '../../Fixture';
 import FixtureSet from '../../FixtureSet';
 import TestCase from '../../TestCase';
 
@@ -40,44 +39,6 @@ export default class TextAreaFixtures extends React.Component {
             <textarea placeholder="Hello, world" />
           </div>
         </TestCase>
-
-        <TestCase
-          title="Required Textareas"
-          affectedBrowsers="Firefox"
-          relatedIssues="16402">
-          <TestCase.Steps>
-            <li>View this test in Firefox</li>
-          </TestCase.Steps>
-
-          <TestCase.ExpectedResult>
-            You should{' '}
-            <b>
-              <i>not</i>
-            </b>{' '}
-            see a red aura on initial page load, indicating the textarea is
-            invalid.
-            <br />
-            This aura looks roughly like:
-            <textarea style={{boxShadow: '0 0 1px 1px red', marginLeft: 8}} />
-          </TestCase.ExpectedResult>
-
-          <Fixture>
-            <form className="control-box">
-              <fieldset>
-                <legend>Empty value prop string</legend>
-                <textarea value="" required={true} />
-              </fieldset>
-              <fieldset>
-                <legend>No value prop</legend>
-                <textarea required={true} />
-              </fieldset>
-              <fieldset>
-                <legend>Empty defaultValue prop string</legend>
-                <textarea required={true} defaultValue="" />
-              </fieldset>
-            </form>
-          </Fixture>
-        </TestCase>
       </FixtureSet>
     );
   }

fixtures/dom/src/find-dom-node.js

@@ -1,20 +0,0 @@
-/**
- * Provides a standard way to access a DOM node across all versions of
- * React.
- */
-
-import {reactPaths} from './react-loader';
-
-const React = window.React;
-const ReactDOM = window.ReactDOM;
-
-export function findDOMNode(target) {
-  const {needsReactDOM} = reactPaths();
-
-  if (needsReactDOM) {
-    return ReactDOM.findDOMNode(target);
-  } else {
-    // eslint-disable-next-line
-    return React.findDOMNode(target);
-  }
-}

fixtures/dom/src/react-loader.js

@@ -36,69 +36,42 @@ function loadScript(src) {
   });
 }
 
-function getVersion() {
-  let query = parseQuery(window.location.search);
-  return query.version || 'local';
-}
+export function reactPaths() {
+  let reactPath = 'react.development.js';
+  let reactDOMPath = 'react-dom.development.js';
+  let reactDOMServerPath = 'react-dom-server.browser.development.js';
 
-export function reactPaths(version = getVersion()) {
   let query = parseQuery(window.location.search);
-  let isProduction = query.production === 'true';
-  let environment = isProduction ? 'production.min' : 'development';
-  let reactPath = `react.${environment}.js`;
-  let reactDOMPath = `react-dom.${environment}.js`;
-  let reactDOMServerPath = `react-dom-server.browser.${environment}.js`;
-  let needsCreateElement = true;
-  let needsReactDOM = true;
+  let version = query.version || 'local';
 
   if (version !== 'local') {
     const {major, minor, prerelease} = semver(version);
-
-    if (major === 0) {
-      needsCreateElement = minor >= 12;
-      needsReactDOM = minor >= 14;
-    }
-
     const [preReleaseStage] = prerelease;
     // The file structure was updated in 16. This wasn't the case for alphas.
     // Load the old module location for anything less than 16 RC
     if (major >= 16 && !(minor === 0 && preReleaseStage === 'alpha')) {
       reactPath =
-        'https://unpkg.com/react@' +
-        version +
-        '/umd/react.' +
-        environment +
-        '.js';
+        'https://unpkg.com/react@' + version + '/umd/react.development.js';
       reactDOMPath =
         'https://unpkg.com/react-dom@' +
         version +
-        '/umd/react-dom.' +
-        environment +
-        '.js';
+        '/umd/react-dom.development.js';
       reactDOMServerPath =
         'https://unpkg.com/react-dom@' +
         version +
-        '/umd/react-dom-server.browser' +
-        environment;
-    } else if (major > 0 || minor > 11) {
+        '/umd/react-dom-server.browser.development';
+    } else {
       reactPath = 'https://unpkg.com/react@' + version + '/dist/react.js';
       reactDOMPath =
         'https://unpkg.com/react-dom@' + version + '/dist/react-dom.js';
       reactDOMServerPath =
         'https://unpkg.com/react-dom@' + version + '/dist/react-dom-server.js';
-    } else {
-      reactPath =
-        'https://cdnjs.cloudflare.com/ajax/libs/react/' + version + '/react.js';
     }
   }
 
-  return {
-    reactPath,
-    reactDOMPath,
-    reactDOMServerPath,
-    needsCreateElement,
-    needsReactDOM,
-  };
+  const needsReactDOM = version === 'local' || parseFloat(version, 10) > 0.13;
+
+  return {reactPath, reactDOMPath, reactDOMServerPath, needsReactDOM};
 }
 
 export default function loadReact() {

fixtures/dom/src/style.css

@@ -126,15 +126,6 @@ textarea {
   width: 100%;
 }
 
-.header__checkbox {
-  vertical-align: middle;
-}
-
-.header__label {
-  font-size: 12px;
-  color: #ccc;
-}
-
 .sr-only {
   clip: rect(0, 0, 0, 0);
   height: 0;

fixtures/dom/src/toWarnDev.js

@@ -1,291 +0,0 @@
-// copied from scripts/jest/matchers/toWarnDev.js
-'use strict';
-
-const jestDiff = require('jest-diff');
-const util = require('util');
-
-function shouldIgnoreConsoleError(format, args) {
-  if (__DEV__) {
-    if (typeof format === 'string') {
-      if (format.indexOf('Error: Uncaught [') === 0) {
-        // This looks like an uncaught error from invokeGuardedCallback() wrapper
-        // in development that is reported by jsdom. Ignore because it's noisy.
-        return true;
-      }
-      if (format.indexOf('The above error occurred') === 0) {
-        // This looks like an error addendum from ReactFiberErrorLogger.
-        // Ignore it too.
-        return true;
-      }
-    }
-  } else {
-    if (
-      format != null &&
-      typeof format.message === 'string' &&
-      typeof format.stack === 'string' &&
-      args.length === 0
-    ) {
-      // In production, ReactFiberErrorLogger logs error objects directly.
-      // They are noisy too so we'll try to ignore them.
-      return true;
-    }
-  }
-  // Looks legit
-  return false;
-}
-
-function normalizeCodeLocInfo(str) {
-  return str && str.replace(/at .+?:\d+/g, 'at **');
-}
-
-const createMatcherFor = consoleMethod =>
-  function matcher(callback, expectedMessages, options = {}) {
-    if (__DEV__) {
-      // Warn about incorrect usage of matcher.
-      if (typeof expectedMessages === 'string') {
-        expectedMessages = [expectedMessages];
-      } else if (!Array.isArray(expectedMessages)) {
-        throw Error(
-          `toWarnDev() requires a parameter of type string or an array of strings ` +
-            `but was given ${typeof expectedMessages}.`
-        );
-      }
-      if (
-        options != null &&
-        (typeof options !== 'object' || Array.isArray(options))
-      ) {
-        throw new Error(
-          'toWarnDev() second argument, when present, should be an object. ' +
-            'Did you forget to wrap the messages into an array?'
-        );
-      }
-      if (arguments.length > 3) {
-        // `matcher` comes from Jest, so it's more than 2 in practice
-        throw new Error(
-          'toWarnDev() received more than two arguments. ' +
-            'Did you forget to wrap the messages into an array?'
-        );
-      }
-
-      const withoutStack = options.withoutStack;
-      const warningsWithoutComponentStack = [];
-      const warningsWithComponentStack = [];
-      const unexpectedWarnings = [];
-
-      let lastWarningWithMismatchingFormat = null;
-      let lastWarningWithExtraComponentStack = null;
-
-      // Catch errors thrown by the callback,
-      // But only rethrow them if all test expectations have been satisfied.
-      // Otherwise an Error in the callback can mask a failed expectation,
-      // and result in a test that passes when it shouldn't.
-      let caughtError;
-
-      const isLikelyAComponentStack = message =>
-        typeof message === 'string' && message.includes('\n    in ');
-
-      const consoleSpy = (format, ...args) => {
-        // Ignore uncaught errors reported by jsdom
-        // and React addendums because they're too noisy.
-        if (
-          consoleMethod === 'error' &&
-          shouldIgnoreConsoleError(format, args)
-        ) {
-          return;
-        }
-
-        const message = util.format(format, ...args);
-        const normalizedMessage = normalizeCodeLocInfo(message);
-
-        // Remember if the number of %s interpolations
-        // doesn't match the number of arguments.
-        // We'll fail the test if it happens.
-        let argIndex = 0;
-        format.replace(/%s/g, () => argIndex++);
-        if (argIndex !== args.length) {
-          lastWarningWithMismatchingFormat = {
-            format,
-            args,
-            expectedArgCount: argIndex,
-          };
-        }
-
-        // Protect against accidentally passing a component stack
-        // to warning() which already injects the component stack.
-        if (
-          args.length >= 2 &&
-          isLikelyAComponentStack(args[args.length - 1]) &&
-          isLikelyAComponentStack(args[args.length - 2])
-        ) {
-          lastWarningWithExtraComponentStack = {
-            format,
-          };
-        }
-
-        for (let index = 0; index < expectedMessages.length; index++) {
-          const expectedMessage = expectedMessages[index];
-          if (
-            normalizedMessage === expectedMessage ||
-            normalizedMessage.includes(expectedMessage)
-          ) {
-            if (isLikelyAComponentStack(normalizedMessage)) {
-              warningsWithComponentStack.push(normalizedMessage);
-            } else {
-              warningsWithoutComponentStack.push(normalizedMessage);
-            }
-            expectedMessages.splice(index, 1);
-            return;
-          }
-        }
-
-        let errorMessage;
-        if (expectedMessages.length === 0) {
-          errorMessage =
-            'Unexpected warning recorded: ' +
-            this.utils.printReceived(normalizedMessage);
-        } else if (expectedMessages.length === 1) {
-          errorMessage =
-            'Unexpected warning recorded: ' +
-            jestDiff(expectedMessages[0], normalizedMessage);
-        } else {
-          errorMessage =
-            'Unexpected warning recorded: ' +
-            jestDiff(expectedMessages, [normalizedMessage]);
-        }
-
-        // Record the call stack for unexpected warnings.
-        // We don't throw an Error here though,
-        // Because it might be suppressed by ReactFiberScheduler.
-        unexpectedWarnings.push(new Error(errorMessage));
-      };
-
-      // TODO Decide whether we need to support nested toWarn* expectations.
-      // If we don't need it, add a check here to see if this is already our spy,
-      // And throw an error.
-      const originalMethod = console[consoleMethod];
-
-      // Avoid using Jest's built-in spy since it can't be removed.
-      console[consoleMethod] = consoleSpy;
-
-      try {
-        callback();
-      } catch (error) {
-        caughtError = error;
-      } finally {
-        // Restore the unspied method so that unexpected errors fail tests.
-        console[consoleMethod] = originalMethod;
-
-        // Any unexpected Errors thrown by the callback should fail the test.
-        // This should take precedence since unexpected errors could block warnings.
-        if (caughtError) {
-          throw caughtError;
-        }
-
-        // Any unexpected warnings should be treated as a failure.
-        if (unexpectedWarnings.length > 0) {
-          return {
-            message: () => unexpectedWarnings[0].stack,
-            pass: false,
-          };
-        }
-
-        // Any remaining messages indicate a failed expectations.
-        if (expectedMessages.length > 0) {
-          return {
-            message: () =>
-              `Expected warning was not recorded:\n  ${this.utils.printReceived(
-                expectedMessages[0]
-              )}`,
-            pass: false,
-          };
-        }
-
-        if (typeof withoutStack === 'number') {
-          // We're expecting a particular number of warnings without stacks.
-          if (withoutStack !== warningsWithoutComponentStack.length) {
-            return {
-              message: () =>
-                `Expected ${withoutStack} warnings without a component stack but received ${
-                  warningsWithoutComponentStack.length
-                }:\n` +
-                warningsWithoutComponentStack.map(warning =>
-                  this.utils.printReceived(warning)
-                ),
-              pass: false,
-            };
-          }
-        } else if (withoutStack === true) {
-          // We're expecting that all warnings won't have the stack.
-          // If some warnings have it, it's an error.
-          if (warningsWithComponentStack.length > 0) {
-            return {
-              message: () =>
-                `Received warning unexpectedly includes a component stack:\n  ${this.utils.printReceived(
-                  warningsWithComponentStack[0]
-                )}\nIf this warning intentionally includes the component stack, remove ` +
-                `{withoutStack: true} from the toWarnDev() call. If you have a mix of ` +
-                `warnings with and without stack in one toWarnDev() call, pass ` +
-                `{withoutStack: N} where N is the number of warnings without stacks.`,
-              pass: false,
-            };
-          }
-        } else if (withoutStack === false || withoutStack === undefined) {
-          // We're expecting that all warnings *do* have the stack (default).
-          // If some warnings don't have it, it's an error.
-          if (warningsWithoutComponentStack.length > 0) {
-            return {
-              message: () =>
-                `Received warning unexpectedly does not include a component stack:\n  ${this.utils.printReceived(
-                  warningsWithoutComponentStack[0]
-                )}\nIf this warning intentionally omits the component stack, add ` +
-                `{withoutStack: true} to the toWarnDev() call.`,
-              pass: false,
-            };
-          }
-        } else {
-          throw Error(
-            `The second argument for toWarnDev(), when specified, must be an object. It may have a ` +
-              `property called "withoutStack" whose value may be undefined, boolean, or a number. ` +
-              `Instead received ${typeof withoutStack}.`
-          );
-        }
-
-        if (lastWarningWithMismatchingFormat !== null) {
-          return {
-            message: () =>
-              `Received ${
-                lastWarningWithMismatchingFormat.args.length
-              } arguments for a message with ${
-                lastWarningWithMismatchingFormat.expectedArgCount
-              } placeholders:\n  ${this.utils.printReceived(
-                lastWarningWithMismatchingFormat.format
-              )}`,
-            pass: false,
-          };
-        }
-
-        if (lastWarningWithExtraComponentStack !== null) {
-          return {
-            message: () =>
-              `Received more than one component stack for a warning:\n  ${this.utils.printReceived(
-                lastWarningWithExtraComponentStack.format
-              )}\nDid you accidentally pass a stack to warning() as the last argument? ` +
-              `Don't forget warning() already injects the component stack automatically.`,
-            pass: false,
-          };
-        }
-
-        return {pass: true};
-      }
-    } else {
-      // Any uncaught errors or warnings should fail tests in production mode.
-      callback();
-
-      return {pass: true};
-    }
-  };
-
-module.exports = {
-  toLowPriorityWarnDev: createMatcherFor('warn'),
-  toWarnDev: createMatcherFor('error'),
-};

fixtures/dom/yarn.lock

@@ -6,40 +6,6 @@
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/@babel/standalone/-/standalone-7.0.0.tgz#856446641620c1c5f0ca775621d478324ebd1f52"
 
-"@jest/types@^24.8.0":
-  version "24.8.0"
-  resolved "https://registry.yarnpkg.com/@jest/types/-/types-24.8.0.tgz#f31e25948c58f0abd8c845ae26fcea1491dea7ad"
-  integrity sha512-g17UxVr2YfBtaMUxn9u/4+siG1ptg9IGYAYwvpwn61nBg779RXnjE/m7CxYcIzEt0AbHZZAHSEZNhkE2WxURVg==
-  dependencies:
-    "@types/istanbul-lib-coverage" "^2.0.0"
-    "@types/istanbul-reports" "^1.1.1"
-    "@types/yargs" "^12.0.9"
-
-"@types/istanbul-lib-coverage@*", "@types/istanbul-lib-coverage@^2.0.0":
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/@types/istanbul-lib-coverage/-/istanbul-lib-coverage-2.0.1.tgz#42995b446db9a48a11a07ec083499a860e9138ff"
-  integrity sha512-hRJD2ahnnpLgsj6KWMYSrmXkM3rm2Dl1qkx6IOFD5FnuNPXJIG5L0dhgKXCYTRMGzU4n0wImQ/xfmRc4POUFlg==
-
-"@types/istanbul-lib-report@*":
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/@types/istanbul-lib-report/-/istanbul-lib-report-1.1.1.tgz#e5471e7fa33c61358dd38426189c037a58433b8c"
-  integrity sha512-3BUTyMzbZa2DtDI2BkERNC6jJw2Mr2Y0oGI7mRxYNBPxppbtEK1F66u3bKwU2g+wxwWI7PAoRpJnOY1grJqzHg==
-  dependencies:
-    "@types/istanbul-lib-coverage" "*"
-
-"@types/istanbul-reports@^1.1.1":
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/@types/istanbul-reports/-/istanbul-reports-1.1.1.tgz#7a8cbf6a406f36c8add871625b278eaf0b0d255a"
-  integrity sha512-UpYjBi8xefVChsCoBpKShdxTllC9pwISirfoZsUa2AAdQg/Jd2KQGtSbw+ya7GPo7x/wAPlH6JBhKhAsXUEZNA==
-  dependencies:
-    "@types/istanbul-lib-coverage" "*"
-    "@types/istanbul-lib-report" "*"
-
-"@types/yargs@^12.0.9":
-  version "12.0.12"
-  resolved "https://registry.yarnpkg.com/@types/yargs/-/yargs-12.0.12.tgz#45dd1d0638e8c8f153e87d296907659296873916"
-  integrity sha512-SOhuU4wNBxhhTHxYaiG5NY4HBhDIDnJF60GU+2LqHAdKKer86//e4yg69aENCtQ04n0ovz+tq2YPME5t5yp4pw==
-
 abab@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/abab/-/abab-1.0.3.tgz#b81de5f7274ec4e756d797cd834f303642724e5d"
@@ -174,11 +140,6 @@ ansi-regex@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
 
-ansi-regex@^4.0.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
-  integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
-
 ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
@@ -189,13 +150,6 @@ ansi-styles@^3.0.0, ansi-styles@^3.1.0:
   dependencies:
     color-convert "^1.9.0"
 
-ansi-styles@^3.2.0, ansi-styles@^3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
-  integrity sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==
-  dependencies:
-    color-convert "^1.9.0"
-
 anymatch@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/anymatch/-/anymatch-1.3.0.tgz#a3e52fa39168c825ff57b0248126ce5a8ff95507"
@@ -295,11 +249,6 @@ arrify@^1.0.0, arrify@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/arrify/-/arrify-1.0.1.tgz#898508da2226f380df904728456849c1501a4b0d"
 
-art@^0.10.3:
-  version "0.10.3"
-  resolved "https://registry.yarnpkg.com/art/-/art-0.10.3.tgz#b01d84a968ccce6208df55a733838c96caeeaea2"
-  integrity sha512-HXwbdofRTiJT6qZX/FnchtldzJjS3vkLJxQilc3Xj+ma2MXjY4UAyQ0ls1XZYVnDvVIBiFZbC6QsvtW86TD6tQ==
-
 asap@~2.0.3:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.5.tgz#522765b50c3510490e52d7dcfe085ef9ba96958f"
@@ -1517,15 +1466,6 @@ chalk@^2.0.0, chalk@^2.1.0:
     escape-string-regexp "^1.0.5"
     supports-color "^4.0.0"
 
-chalk@^2.0.1:
-  version "2.4.2"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
-  integrity sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==
-  dependencies:
-    ansi-styles "^3.2.1"
-    escape-string-regexp "^1.0.5"
-    supports-color "^5.3.0"
-
 chokidar@^1.6.0, chokidar@^1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-1.7.0.tgz#798e689778151c8076b4b360e5edd28cda2bb468"
@@ -2118,11 +2058,6 @@ detect-port-alt@1.1.3:
     address "^1.0.1"
     debug "^2.6.0"
 
-diff-sequences@^24.3.0:
-  version "24.3.0"
-  resolved "https://registry.yarnpkg.com/diff-sequences/-/diff-sequences-24.3.0.tgz#0f20e8a1df1abddaf4d9c226680952e64118b975"
-  integrity sha512-xLqpez+Zj9GKSnPWS0WZw1igGocZ+uua8+y+5dDNTT934N3QuY1sp2LkHzwiaYQGz60hMq0pjAshdeXm5VUOEw==
-
 diff@^3.2.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.3.0.tgz#056695150d7aa93237ca7e378ac3b1682b7963b9"
@@ -3184,11 +3119,6 @@ has-flag@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-2.0.0.tgz#e8207af1cc7b30d446cc70b734b5e8be18f88d51"
 
-has-flag@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
-  integrity sha1-tdRU3CGZriJWmfNGfloH87lVuv0=
-
 has-unicode@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/has-unicode/-/has-unicode-2.0.1.tgz#e0e6fe6a28cf51138855e086d1691e771de2a8b9"
@@ -3840,16 +3770,6 @@ jest-diff@^20.0.3:
     jest-matcher-utils "^20.0.3"
     pretty-format "^20.0.3"
 
-jest-diff@^24.8.0:
-  version "24.8.0"
-  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-24.8.0.tgz#146435e7d1e3ffdf293d53ff97e193f1d1546172"
-  integrity sha512-wxetCEl49zUpJ/bvUmIFjd/o52J+yWcoc5ZyPq4/W1LUKGEhRYDIbP1KcF6t+PvqNrGAFk4/JhtxDq/Nnzs66g==
-  dependencies:
-    chalk "^2.0.1"
-    diff-sequences "^24.3.0"
-    jest-get-type "^24.8.0"
-    pretty-format "^24.8.0"
-
 jest-docblock@^20.0.3:
   version "20.0.3"
   resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-20.0.3.tgz#17bea984342cc33d83c50fbe1545ea0efaa44712"
@@ -3869,11 +3789,6 @@ jest-environment-node@^20.0.3:
     jest-mock "^20.0.3"
     jest-util "^20.0.3"
 
-jest-get-type@^24.8.0:
-  version "24.8.0"
-  resolved "https://registry.yarnpkg.com/jest-get-type/-/jest-get-type-24.8.0.tgz#a7440de30b651f5a70ea3ed7ff073a32dfe646fc"
-  integrity sha512-RR4fo8jEmMD9zSz2nLbs2j0zvPpk/KCEz3a62jJWbd2ayNo0cb+KFRxPHVhE4ZmgGJEQp0fosmNz84IfqM8cMQ==
-
 jest-haste-map@^20.0.4:
   version "20.0.5"
   resolved "https://registry.yarnpkg.com/jest-haste-map/-/jest-haste-map-20.0.5.tgz#abad74efb1a005974a7b6517e11010709cab9112"
@@ -5328,16 +5243,6 @@ pretty-format@^20.0.3:
     ansi-regex "^2.1.1"
     ansi-styles "^3.0.0"
 
-pretty-format@^24.8.0:
-  version "24.8.0"
-  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-24.8.0.tgz#8dae7044f58db7cb8be245383b565a963e3c27f2"
-  integrity sha512-P952T7dkrDEplsR+TuY7q3VXDae5Sr7zmQb12JU/NDQa/3CH7/QW0yvqLcGN6jL+zQFKaoJcPc+yJxMTGmosqw==
-  dependencies:
-    "@jest/types" "^24.8.0"
-    ansi-regex "^4.0.0"
-    ansi-styles "^3.2.0"
-    react-is "^16.8.4"
-
 private@^0.1.6:
   version "0.1.6"
   resolved "https://registry.yarnpkg.com/private/-/private-0.1.6.tgz#55c6a976d0f9bafb9924851350fe47b9b5fbb7c1"
@@ -5524,11 +5429,6 @@ react-error-overlay@^1.0.10:
     settle-promise "1.0.0"
     source-map "0.5.6"
 
-react-is@^16.8.4:
-  version "16.8.6"
-  resolved "https://registry.yarnpkg.com/react-is/-/react-is-16.8.6.tgz#5bbc1e2d29141c9fbdfed456343fe2bc430a6a16"
-  integrity sha512-aUk3bHfZ2bRSVFFbbeVS4i+lNPZr3/WM5jT2J5omUVV1zzcs1nAaf3l51ctA5FFvCRbhrH0bdAsRRQddFJZPtA==
-
 react-scripts@^1.0.11:
   version "1.0.11"
   resolved "https://registry.yarnpkg.com/react-scripts/-/react-scripts-1.0.11.tgz#483d49e27f417ec981ae415a4456120a2a2bc8c1"
@@ -6348,13 +6248,6 @@ supports-color@^4.0.0, supports-color@^4.2.1:
   dependencies:
     has-flag "^2.0.0"
 
-supports-color@^5.3.0:
-  version "5.5.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
-  integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
-  dependencies:
-    has-flag "^3.0.0"
-
 svgo@^0.7.0:
   version "0.7.1"
   resolved "https://registry.yarnpkg.com/svgo/-/svgo-0.7.1.tgz#287320fed972cb097e72c2bb1685f96fe08f8034"

fixtures/eslint/.eslintrc.json

@@ -1,15 +0,0 @@
-{
-  "root": true,
-  "parserOptions": {
-    "ecmaVersion": 8,
-    "sourceType": "module",
-    "ecmaFeatures": {
-      "jsx": true
-    }
-  },
-  "plugins": ["react-hooks"],
-  "rules": {
-    "react-hooks/rules-of-hooks": 2,
-    "react-hooks/exhaustive-deps": 2
-  }
-}

fixtures/eslint/README.md

@@ -1,7 +0,0 @@
-# ESLint Playground Fixture
-
-This is an internal playground for quick iteration on our lint rules inside an IDE like VSCode.
-
-See instructions in `./index.js` in this directory.
-
-![Demo](https://duaw26jehqd4r.cloudfront.net/items/2Z390a31003O0l0o0e3O/Screen%20Recording%202019-01-16%20at%2010.29%20PM.gif?v=d6856125)

fixtures/eslint/index.js

@@ -1,29 +0,0 @@
-// This is a testing playground for our lint rules.
-
-// 1. Run yarn && yarn start
-// 2. "File > Add Folder to Workspace" this specific folder in VSCode with ESLint extension
-// 3. Changes to the rule source should get picked up without restarting ESLint server
-
-function Comment({comment, commentSource}) {
-  const currentUserID = comment.viewer.id;
-  const environment = RelayEnvironment.forUser(currentUserID);
-  const commentID = nullthrows(comment.id);
-  useEffect(
-    () => {
-      const subscription = SubscriptionCounter.subscribeOnce(
-        `StoreSubscription_${commentID}`,
-        () =>
-          StoreSubscription.subscribe(
-            environment,
-            {
-              comment_id: commentID,
-            },
-            currentUserID,
-            commentSource
-          )
-      );
-      return () => subscription.dispose();
-    },
-    [commentID, commentSource, currentUserID, environment]
-  );
-}

fixtures/eslint/package.json

@@ -1,12 +0,0 @@
-{
-  "private": true,
-  "name": "eslint-playground",
-  "dependencies": {
-    "eslint": "4.1.0",
-    "eslint-plugin-react-hooks": "link:./proxy"
-  },
-  "scripts": {
-    "start": "./watch.sh",
-    "lint": "eslint index.js"
-  }
-}

fixtures/eslint/proxy/index.js

@@ -1,35 +0,0 @@
-'use strict';
-
-// This file is a proxy for our rule definition that will
-// load the latest built version on every check. This makes
-// it convenient to test inside IDEs (which would otherwise
-// load a version of our rule once and never restart the server).
-// See instructions in ../index.js playground.
-
-let build;
-reload();
-
-function reload() {
-  for (let id in require.cache) {
-    if (/eslint-plugin-react-hooks/.test(id)) {
-      delete require.cache[id];
-    }
-  }
-  // Point to the built version.
-  build = require('../../../build/node_modules/eslint-plugin-react-hooks');
-}
-
-let rules = {};
-for (let key in build.rules) {
-  if (build.rules.hasOwnProperty(key)) {
-    rules[key] = Object.assign({}, build.rules, {
-      create() {
-        // Reload changes to the built rule
-        reload();
-        return build.rules[key].create.apply(this, arguments);
-      },
-    });
-  }
-}
-
-module.exports = {rules};

fixtures/eslint/watch.sh

@@ -1,3 +0,0 @@
-#!/bin/bash
-(cd ../.. && yarn build eslint --type=NODE_DEV)
-(cd ../.. && watchman-make --make 'yarn build eslint --type=NODE_DEV' -p 'packages/eslint-plugin-*/**/*' -t ignored)

fixtures/eslint/yarn.lock

@@ -1,853 +0,0 @@
-# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
-# yarn lockfile v1
-
-
-acorn-jsx@^3.0.0:
-  version "3.0.1"
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-
-"safer-buffer@>= 2.1.2 < 3":
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
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-
-signal-exit@^3.0.2:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
-  integrity sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=
-
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/slice-ansi/-/slice-ansi-1.0.0.tgz#044f1a49d8842ff307aad6b505ed178bd950134d"
-  integrity sha512-POqxBK6Lb3q6s047D/XsDVNPnF9Dl8JSaqe9h9lURl0OdNqy/ujDrOiIHtsqXMGbWWTIomRzAMaTyawAU//Reg==
-  dependencies:
-    is-fullwidth-code-point "^2.0.0"
-
-sprintf-js@~1.0.2:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
-  integrity sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=
-
-string-width@^2.1.0, string-width@^2.1.1:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
-  integrity sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==
-  dependencies:
-    is-fullwidth-code-point "^2.0.0"
-    strip-ansi "^4.0.0"
-
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-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.1.1.tgz#9cf1611ba62685d7030ae9e4ba34149c3af03fc8"
-  integrity sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==
-  dependencies:
-    safe-buffer "~5.1.0"
-
-strip-ansi@^3.0.0:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
-  integrity sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=
-  dependencies:
-    ansi-regex "^2.0.0"
-
-strip-ansi@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-4.0.0.tgz#a8479022eb1ac368a871389b635262c505ee368f"
-  integrity sha1-qEeQIusaw2iocTibY1JixQXuNo8=
-  dependencies:
-    ansi-regex "^3.0.0"
-
-strip-json-comments@~2.0.1:
-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
-  integrity sha1-PFMZQukIwml8DsNEhYwobHygpgo=
-
-supports-color@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
-  integrity sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=
-
-supports-color@^5.3.0:
-  version "5.5.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
-  integrity sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==
-  dependencies:
-    has-flag "^3.0.0"
-
-table@^4.0.1:
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/table/-/table-4.0.3.tgz#00b5e2b602f1794b9acaf9ca908a76386a7813bc"
-  integrity sha512-S7rnFITmBH1EnyKcvxBh1LjYeQMmnZtCXSEbHcH6S0NoKit24ZuFO/T1vDcLdYsLQkM188PVVhQmzKIuThNkKg==
-  dependencies:
-    ajv "^6.0.1"
-    ajv-keywords "^3.0.0"
-    chalk "^2.1.0"
-    lodash "^4.17.4"
-    slice-ansi "1.0.0"
-    string-width "^2.1.1"
-
-text-table@~0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
-  integrity sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=
-
-through@^2.3.6:
-  version "2.3.8"
-  resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
-  integrity sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=
-
-tmp@^0.0.33:
-  version "0.0.33"
-  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
-  integrity sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==
-  dependencies:
-    os-tmpdir "~1.0.2"
-
-type-check@~0.3.2:
-  version "0.3.2"
-  resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.3.2.tgz#5884cab512cf1d355e3fb784f30804b2b520db72"
-  integrity sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=
-  dependencies:
-    prelude-ls "~1.1.2"
-
-typedarray@^0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
-  integrity sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=
-
-uri-js@^4.2.2:
-  version "4.2.2"
-  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.2.2.tgz#94c540e1ff772956e2299507c010aea6c8838eb0"
-  integrity sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==
-  dependencies:
-    punycode "^2.1.0"
-
-util-deprecate@~1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
-  integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
-
-wordwrap@~1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
-  integrity sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=
-
-wrappy@1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
-  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
-
-write@^0.2.1:
-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/write/-/write-0.2.1.tgz#5fc03828e264cea3fe91455476f7a3c566cb0757"
-  integrity sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=
-  dependencies:
-    mkdirp "^0.5.1"
-
-xtend@^4.0.0:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/xtend/-/xtend-4.0.1.tgz#a5c6d532be656e23db820efb943a1f04998d63af"
-  integrity sha1-pcbVMr5lbiPbgg77lDofBJmNY68=

fixtures/expiration/package.json

@@ -9,7 +9,7 @@
   },
   "scripts": {
     "prestart":
-      "cp ../../build/node_modules/react/umd/react.development.js public/ && cp ../../build/node_modules/react-dom/umd/react-dom.development.js public/",
+      "cp ../../build/dist/react.development.js public/ && cp ../../build/dist/react-dom.development.js public/",
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test --env=jsdom",

fixtures/fiber-triangle/index.html

@@ -16,8 +16,8 @@
         If you checked out the source from GitHub make sure to run <code>npm run build</code>.
       </p>
     </div>
-    <script src="../../build/node_modules/react/umd/react.development.js"></script>
-    <script src="../../build/node_modules/react-dom/umd/react-dom.development.js"></script>
+    <script src="../../build/dist/react.development.js"></script>
+    <script src="../../build/dist/react-dom.development.js"></script>
     <script src="https://unpkg.com/babel-standalone@6/babel.js"></script>
     <script type="text/babel">
       var dotStyle = {

fixtures/fizz-ssr-browser/index.html

@@ -1,40 +0,0 @@
-<!DOCTYPE html>
-<html style="width: 100%; height: 100%; overflow: hidden">
-  <head>
-    <meta charset="utf-8">
-    <title>Fizz Example</title>
-  </head>
-  <body>
-    <h1>Fizz Example</h1>
-    <div id="container">
-      <p>
-        To install React, follow the instructions on
-        <a href="https://github.com/facebook/react/">GitHub</a>.
-      </p>
-      <p>
-        If you can see this, React is <strong>not</strong> working right.
-        If you checked out the source from GitHub make sure to run <code>npm run build</code>.
-      </p>
-    </div>
-    <script src="../../build/dist/react.development.js"></script>
-    <script src="../../build/dist/react-dom-unstable-fizz.browser.development.js"></script>
-    <script src="https://unpkg.com/babel-standalone@6/babel.js"></script>
-    <script type="text/babel">
-      let stream = ReactDOMFizzServer.renderToReadableStream(<body>Success</body>);
-      let response = new Response(stream, {
-        headers: {'Content-Type': 'text/html'},
-      });
-      display(response);
-
-      async function display(responseToDisplay) {
-        let blob = await responseToDisplay.blob();
-        let url = URL.createObjectURL(blob);
-        let iframe = document.createElement('iframe');
-        iframe.src = url;
-        let container = document.getElementById('container');
-        container.innerHTML = '';
-        container.appendChild(iframe);
-      }
-    </script>
-  </body>
-</html>

fixtures/packaging/README.md

@@ -15,18 +15,28 @@ First, build React and the fixtures:
 ```
 cd react
 npm run build
-node fixtures/packaging/build-all.js
+
+cd fixtures/packaging
+node build-all.js
 ```
 
-Then run a local server, e.g.
+Then run a local server at the root of the repo, e.g.
 
 ```
-npx pushstate-server .
+npm i -g pushstate-server
+cd ../..
+pushstate-server .
 ```
 
-and open the following URL in your browser: [http://localhost:9000/fixtures/packaging/index.html](http://localhost:9000/fixtures/packaging/index.html)
+(Too complicated? Send a PR to simplify this :-)).
+
+Then open the following URL in your browser:
+
+```
+open http://localhost:9000/fixtures/packaging/index.html
+```
 
 You should see two things:
 
-* A number of iframes (corresponding to various builds), with "Hello World" rendered in each iframe.
+* "Hello World" is rendered in each iframe.
 * No errors in the console.

fixtures/packaging/babel-standalone/dev.html

@@ -1,7 +1,7 @@
 <html>
   <body>
-    <script src="../../../build/node_modules/react/umd/react.development.js"></script>
-    <script src="../../../build/node_modules/react-dom/umd/react-dom.development.js"></script>
+    <script src="../../../build/dist/react.development.js"></script>
+    <script src="../../../build/dist/react-dom.development.js"></script>
     <script src="https://unpkg.com/babel-standalone@6/babel.js"></script>
     <div id="container"></div>
     <script type="text/babel">

fixtures/packaging/globals/dev.html

@@ -1,7 +1,7 @@
 <html>
   <body>
-    <script src="../../../build/node_modules/react/umd/react.development.js"></script>
-    <script src="../../../build/node_modules/react-dom/umd/react-dom.development.js"></script>
+    <script src="../../../build/dist/react.development.js"></script>
+    <script src="../../../build/dist/react-dom.development.js"></script>
     <div id="container"></div>
     <script>
       ReactDOM.render(

fixtures/packaging/globals/prod.html

@@ -1,7 +1,7 @@
 <html>
   <body>
-    <script src="../../../build/node_modules/react/umd/react.production.min.js"></script>
-    <script src="../../../build/node_modules/react-dom/umd/react-dom.production.min.js"></script>
+    <script src="../../../build/dist/react.production.min.js"></script>
+    <script src="../../../build/dist/react-dom.production.min.js"></script>
     <div id="container"></div>
     <script>
       ReactDOM.render(

fixtures/packaging/requirejs/dev.html

@@ -5,8 +5,8 @@
     <script>
       requirejs.config({
         paths: {
-          react: '../../../build/node_modules/react/umd/react.development',
-          'react-dom': '../../../build/node_modules/react-dom/umd/react-dom.development'
+          react: '../../../build/dist/react.development',
+          'react-dom': '../../../build/dist/react-dom.development'
         }
       });
 

fixtures/packaging/requirejs/prod.html

@@ -5,8 +5,8 @@
     <script>
       requirejs.config({
         paths: {
-          react: '../../../build/node_modules/react/umd/react.production.min',
-          'react-dom': '../../../build/node_modules/react-dom/umd/react-dom.production.min'
+          react: '../../../build/dist/react.production.min',
+          'react-dom': '../../../build/dist/react-dom.production.min'
         }
       });
 

fixtures/packaging/rjs/dev/config.js

@@ -4,9 +4,8 @@ module.exports = {
   out: 'output.js',
   optimize: 'none',
   paths: {
-    react: '../../../../build/node_modules/react/umd/react.development',
-    'react-dom':
-      '../../../../build/node_modules/react-dom/umd/react-dom.development',
+    react: '../../../../build/dist/react.development',
+    'react-dom': '../../../../build/dist/react-dom.development',
     schedule: '../../../../build/dist/schedule.development',
   },
 };

fixtures/packaging/rjs/prod/config.js

@@ -4,9 +4,8 @@ module.exports = {
   out: 'output.js',
   optimize: 'none',
   paths: {
-    react: '../../../../build/node_modules/react/umd/react.production.min',
-    'react-dom':
-      '../../../../build/node_modules/react-dom/umd/react-dom.production.min',
+    react: '../../../../build/dist/react.production.min',
+    'react-dom': '../../../../build/dist/react-dom.production.min',
     schedule: '../../../../build/dist/schedule.development',
   },
 };

fixtures/packaging/systemjs-builder/dev/config.js

@@ -1,8 +1,7 @@
 System.config({
   paths: {
-    react: '../../../../build/node_modules/react/umd/react.development.js',
-    'react-dom':
-      '../../../../build/node_modules/react-dom/umd/react-dom.development.js',
+    react: '../../../../build/dist/react.development.js',
+    'react-dom': '../../../../build/dist/react-dom.development.js',
     schedule: '../../../../build/dist/schedule.development',
   },
 });

fixtures/packaging/systemjs-builder/prod/config.js

@@ -1,8 +1,7 @@
 System.config({
   paths: {
-    react: '../../../../build/node_modules/react/umd/react.production.min.js',
-    'react-dom':
-      '../../../../build/node_modules/react-dom/umd/react-dom.production.min.js',
+    react: '../../../../build/dist/react.production.min.js',
+    'react-dom': '../../../../build/dist/react-dom.production.min.js',
     schedule: '../../../../build/dist/schedule.development',
   },
 });

fixtures/packaging/systemjs/dev.html

@@ -5,8 +5,8 @@
     <script>
       System.config({
         paths: {
-          react: '../../../build/node_modules/react/umd/react.development.js',
-          'react-dom': '../../../build/node_modules/react-dom/umd/react-dom.development.js'
+          react: '../../../build/dist/react.development.js',
+          'react-dom': '../../../build/dist/react-dom.development.js'
         }
       });
 

fixtures/packaging/systemjs/prod.html

@@ -5,8 +5,8 @@
     <script>
       System.config({
         paths: {
-          react: '../../../build/node_modules/react/umd/react.production.min.js',
-          'react-dom': '../../../build/node_modules/react-dom/umd/react-dom.production.min.js'
+          react: '../../../build/dist/react.production.min.js',
+          'react-dom': '../../../build/dist/react-dom.production.min.js'
         }
       });
 

fixtures/scheduler/index.html

@@ -90,78 +90,15 @@
       </div>
       <div> If the counter advanced while you were away from this tab, it's correct.</div>
     </li>
-    <li>
-      <p>Can pause execution, dump scheduled callbacks, and continue where it left off</p>
-      <button onClick="runTestEight()">Run Test 8</button>
-      <div><b>Click the button above, press "continue" to finish the test after it pauses:</b></div>
-      <button onClick="continueTestEight()">continue</button>
-      <div><b>Expected:</b></div>
-      <div id="test-8-expected">
-      </div>
-      <div> -------------------------------------------------</div>
-      <div> If the test didn't progress until you hit "continue" and </div>
-      <div> you see the same above and below afterwards it's correct.
-        <div> -------------------------------------------------</div>
-        <div><b>Actual:</b></div>
-        <div id="test-8"></div>
-    </li>
-    <li>
-      <p>Can force a specific framerate</p>
-      <p><b>IMPORTANT:</b> This test may be flaky if other tests have been run in this js instance. To get a clean test refresh the page before running test 9</p>
-      <button onClick="runTestNine()">Run Test 9</button>
-      <div><b>Expected:</b></div>
-      <div id="test-9-expected">
-      </div>
-      <div> -------------------------------------------------</div>
-      <div> If you see the same above and below it's correct.
-        <div> -------------------------------------------------</div>
-        <div><b>Actual:</b></div>
-        <div id="test-9"></div>
-      </div>
-    </li>
-    <li>
-      <p>Runs scheduled JS work for 99% of the frame time when nothing else is using the thread.</p>
-      <p><b>NOTE:</b> Try this test both when nothing else is running and when something is using the compositor thread in another visible tab with video or <a href="https://www.shadertoy.com/view/MtffDX">WebGL content</a> (Shift+Click).</p>
-      <button onClick="runTestTen()">Run Test 10</button>
-      <div><b>Expected:</b></div>
-      <div id="test-10-expected">
-      </div>
-      <div> -------------------------------------------------</div>
-      <div> If you see the same above and below it's correct.
-        <div> -------------------------------------------------</div>
-        <div><b>Actual:</b></div>
-        <div id="test-10"></div>
-      </div>
-    </li>
-    <li>
-      <p>Runs scheduled JS work more than 95% of the frame time when inserting DOM nodes.</p>
-      <p><b>NOTE:</b> Try this test both when nothing else is running and when something is using the compositor thread in another visible tab with video or <a href="https://www.shadertoy.com/view/MtffDX">WebGL content</a> (Shift+Click).</p>
-      <button onClick="runTestEleven()">Run Test 11</button>
-      <div><b>Expected:</b></div>
-      <div id="test-11-expected">
-      </div>
-      <div> -------------------------------------------------</div>
-      <div> If you see the same above and below it's correct.
-        <div> -------------------------------------------------</div>
-        <div><b>Actual:</b></div>
-        <div id="test-11"></div>
-      </div>
-    </li>
   </ol>
-  <script src="../../build/node_modules/react/umd/react.production.min.js"></script>
-  <script src="../../build/node_modules/scheduler/umd/scheduler.production.min.js"></script>
+  <script src="../../build/dist/react.development.js"></script>
+  <script src="../../build/node_modules/scheduler/umd/scheduler.development.js"></script>
   <script src="https://unpkg.com/babel-standalone@6/babel.js"></script>
   <script type="text/babel">
 const {
   unstable_scheduleCallback: scheduleCallback,
   unstable_cancelCallback: cancelCallback,
-  unstable_now: now,
-  unstable_getFirstCallbackNode: getFirstCallbackNode,
-  unstable_pauseExecution: pauseExecution,
-  unstable_continueExecution: continueExecution,
-  unstable_forceFrameRate: forceFrameRate,
-  unstable_shouldYield: shouldYield,
-  unstable_NormalPriority: NormalPriority,
+  unstable_now: now
 } = Scheduler;
 function displayTestResult(testNumber) {
   const expectationNode = document.getElementById('test-' + testNumber + '-expected');
@@ -233,7 +170,7 @@ const expectedResults = [
   [
     'scheduled Cb1',
     'frame 1 started',
-    'cb1 called with argument of false',
+    'cb1 called with argument of {"didTimeout":false}',
     'frame 2 started',
     'frame 3 started... we stop counting now.',
   ],
@@ -242,8 +179,8 @@ const expectedResults = [
     'scheduled CbA',
     'scheduled CbB',
     'frame 1 started',
-    'cbA called with argument of false',
-    'cbB called with argument of false',
+    'cbA called with argument of {"didTimeout":false}',
+    'cbB called with argument of {"didTimeout":false}',
     'frame 2 started',
     'frame 3 started... we stop counting now.',
   ],
@@ -253,9 +190,9 @@ const expectedResults = [
     'scheduled CbB',
     'frame 1 started',
     'scheduled CbA again',
-    'cbA0 called with argument of false',
-    'cbB called with argument of false',
-    'cbA1 called with argument of false',
+    'cbA0 called with argument of {"didTimeout":false}',
+    'cbB called with argument of {"didTimeout":false}',
+    'cbA1 called with argument of {"didTimeout":false}',
     'frame 2 started',
     'frame 3 started... we stop counting now.',
   ],
@@ -267,44 +204,17 @@ const expectedResults = [
     'scheduled cbD',
     'frame 1 started',
     'cbC called with argument of {"didTimeout":true}',
-    'cbA called with argument of false',
+    'cbA called with argument of {"didTimeout":false}',
     'cbA running and taking some time',
     'frame 2 started',
-    'cbB called with argument of false',
-    'cbD called with argument of false',
+    'cbB called with argument of {"didTimeout":false}',
+    'cbD called with argument of {"didTimeout":false}',
     'frame 3 started... we stop counting now.',
   ],
   // test 5
   [
     // ... TODO
   ],
-  [],
-  [],
-  // Test 8
-  [
-    'Queue size: 0.',
-    'Pausing... press continue to resume.',
-    'Queue size: 2.',
-    'Finishing...',
-    'Done!',
-  ],
-  // test 9
-  [
-    'Forcing new frame times...',
-    'Using new frame time!',
-    'Using new frame time!',
-    'Finished!',
-  ],
-  // test 10
-  [
-    'Running work for 10 seconds...',
-    'Ran scheduled work for >99% of the time.',
-  ],
-  // test 11
-  [
-    'Running work for 10 seconds...',
-    'Ran scheduled work for >95% of the time.',
-  ],
 ];
 function runTestOne() {
   // Test 1
@@ -315,7 +225,7 @@ function runTestOne() {
   const cb1 = (x) => {
     updateTestResult(1, 'cb1 called with argument of ' + JSON.stringify(x));
   }
-  scheduleCallback(NormalPriority, cb1);
+  scheduleCallback(cb1);
   updateTestResult(1, 'scheduled Cb1');
   logWhenFramesStart(1, () => {
     displayTestResult(1);
@@ -333,9 +243,9 @@ function runTestTwo() {
   const cbB = (x) => {
     updateTestResult(2, 'cbB called with argument of ' + JSON.stringify(x));
   }
-  scheduleCallback(NormalPriority, cbA);
+  scheduleCallback(cbA);
   updateTestResult(2, 'scheduled CbA');
-  scheduleCallback(NormalPriority, cbB);
+  scheduleCallback(cbB);
   updateTestResult(2, 'scheduled CbB');
   logWhenFramesStart(2, () => {
     displayTestResult(2);
@@ -350,7 +260,7 @@ function runTestThree() {
   let callbackAIterations = 0;
   const cbA = (x) => {
     if (callbackAIterations < 1) {
-      scheduleCallback(NormalPriority, cbA);
+      scheduleCallback(cbA);
       updateTestResult(3, 'scheduled CbA again');
     }
     updateTestResult(3, 'cbA' + callbackAIterations + ' called with argument of ' + JSON.stringify(x));
@@ -359,9 +269,9 @@ function runTestThree() {
   const cbB = (x) => {
     updateTestResult(3, 'cbB called with argument of ' + JSON.stringify(x));
   }
-  scheduleCallback(NormalPriority, cbA);
+  scheduleCallback(cbA);
   updateTestResult(3, 'scheduled CbA');
-  scheduleCallback(NormalPriority, cbB);
+  scheduleCallback(cbB);
   updateTestResult(3, 'scheduled CbB');
   logWhenFramesStart(3, () => {
     displayTestResult(3);
@@ -395,13 +305,13 @@ function runTestFour() {
   const cbD = (x) => {
     updateTestResult(4, 'cbD called with argument of ' + JSON.stringify(x));
   }
-  scheduleCallback(NormalPriority, cbA); // won't time out
+  scheduleCallback(cbA); // won't time out
   updateTestResult(4, 'scheduled cbA');
-  scheduleCallback(NormalPriority, cbB, {timeout: 100}); // times out later
+  scheduleCallback(cbB, {timeout: 100}); // times out later
   updateTestResult(4, 'scheduled cbB');
-  scheduleCallback(NormalPriority, cbC, {timeout: 1}); // will time out fast
+  scheduleCallback(cbC, {timeout: 1}); // will time out fast
   updateTestResult(4, 'scheduled cbC');
-  scheduleCallback(NormalPriority, cbD); // won't time out
+  scheduleCallback(cbD); // won't time out
   updateTestResult(4, 'scheduled cbD');
 
   // should have run in order of C, A, B, D
@@ -480,15 +390,15 @@ function runTestFive() {
         });
       });
     });
-    scheduleCallback(NormalPriority, cbA);
+    scheduleCallback(cbA);
     console.log('scheduled cbA');
-    scheduleCallback(NormalPriority, cbB); // will throw error
+    scheduleCallback(cbB); // will throw error
     console.log('scheduled cbB');
-    scheduleCallback(NormalPriority, cbC);
+    scheduleCallback(cbC);
     console.log('scheduled cbC');
-    scheduleCallback(NormalPriority, cbD); // will throw error
+    scheduleCallback(cbD); // will throw error
     console.log('scheduled cbD');
-    scheduleCallback(NormalPriority, cbE);
+    scheduleCallback(cbE);
     console.log('scheduled cbE');
   };
 }
@@ -558,15 +468,15 @@ function runTestSix() {
         });
       });
     });
-    scheduleCallback(NormalPriority, cbA);
+    scheduleCallback(cbA);
     console.log('scheduled cbA');
-    scheduleCallback(NormalPriority, cbB); // will throw error
+    scheduleCallback(cbB); // will throw error
     console.log('scheduled cbB');
-    scheduleCallback(NormalPriority, cbC, {timeout: 1});
+    scheduleCallback(cbC, {timeout: 1});
     console.log('scheduled cbC');
-    scheduleCallback(NormalPriority, cbD, {timeout: 1}); // will throw error
+    scheduleCallback(cbD, {timeout: 1}); // will throw error
     console.log('scheduled cbD');
-    scheduleCallback(NormalPriority, cbE, {timeout: 1});
+    scheduleCallback(cbE, {timeout: 1});
     console.log('scheduled cbE');
   };
 }
@@ -582,150 +492,10 @@ function runTestSeven() {
     counter++;
     counterNode.innerHTML = counter;
     waitForTimeToPass(100);
-    scheduleCallback(NormalPriority, incrementCounterAndScheduleNextCallback);
+    scheduleCallback(incrementCounterAndScheduleNextCallback);
   }
-  scheduleCallback(NormalPriority, incrementCounterAndScheduleNextCallback);
+  scheduleCallback(incrementCounterAndScheduleNextCallback);
 }
-
-function runTestEight() {
-  // Test 8
-  // Pauses execution, dumps the queue, and continues execution
-  clearTestResult(8);
-
-  function countNodesInStack(firstCallbackNode) {
-    var node = firstCallbackNode;
-    var count = 0;
-    if (node !== null) {
-      do {
-        count = count + 1;
-        node = node.next;
-      } while (node !== firstCallbackNode);
-    }
-    return count;
-  }
-
-  scheduleCallback(NormalPriority, () => {
-
-    // size should be 0
-    updateTestResult(8, `Queue size: ${countNodesInStack(getFirstCallbackNode())}.`);
-    updateTestResult(8, 'Pausing... press continue to resume.');
-    pauseExecution();
-
-    scheduleCallback(NormalPriority, function () {
-      updateTestResult(8, 'Finishing...');
-      displayTestResult(8);
-    })
-    scheduleCallback(NormalPriority, function () {
-      updateTestResult(8, 'Done!');
-      displayTestResult(8);
-      checkTestResult(8);
-    })
-
-    // new size should be 2 now
-    updateTestResult(8, `Queue size: ${countNodesInStack(getFirstCallbackNode())}.`);
-    displayTestResult(8);
-  });
-}
-
-function continueTestEight() {
-  continueExecution();
-}
-
-function runTestNine() {
-  clearTestResult(9);
-  // We have this to make sure that the thing that goes right after it can get a full frame
-  var forceFrameFinish = () => {
-    while (!shouldYield()) {
-      waitForTimeToPass(1);
-    }
-    waitForTimeToPass(100);
-  }
-  scheduleCallback(NormalPriority, forceFrameFinish);
-  scheduleCallback(NormalPriority, () => {
-    var startTime = now();
-    while (!shouldYield()) {}
-    var initialFrameTime = now() - startTime;
-    var newFrameTime = (initialFrameTime * 2) > 60 ? (initialFrameTime * 2) : 60;
-    var newFrameRate = Math.floor(1000/newFrameTime);
-    updateTestResult(9, `Forcing new frame times...`);
-    displayTestResult(9);
-    forceFrameRate(newFrameRate);
-    var toSchedule = (again) => {
-      var startTime = now();
-      while (!shouldYield()) {}
-      var frameTime = now() - startTime;
-      if (frameTime >= (newFrameTime-8)) {
-        updateTestResult(9, `Using new frame time!`);
-      } else {
-        updateTestResult(9, `Failed to use new frame time. (off by ${newFrameTime - frameTime}ms)`);
-      }
-      displayTestResult(9);
-      if (again) {
-        scheduleCallback(NormalPriority, forceFrameFinish);
-        scheduleCallback(NormalPriority, () => {toSchedule(false);});
-      } else {
-        updateTestResult(9, `Finished!`);
-        forceFrameRate(0);
-        displayTestResult(9);
-        checkTestResult(9);
-      }
-    }
-    scheduleCallback(NormalPriority, forceFrameFinish);
-    scheduleCallback(NormalPriority, () => {toSchedule(true);});
-  });
-}
-
-function runTestTen() {
-  clearTestResult(10);
-  updateTestResult(10, `Running work for 10 seconds...`);
-  var testStartTime = now();
-  var accumulatedWork = 0
-  function loop() {
-    var startTime = now();
-    while (!shouldYield()) {}
-    var endTime = now();
-    accumulatedWork += endTime - startTime;
-    var runTime = endTime - testStartTime;
-    if (runTime > 10000) {
-      updateTestResult(10, `Ran scheduled work for ${(100 * accumulatedWork / runTime).toFixed(2)}% of the time.`);
-      displayTestResult(10);
-      return;
-    }
-    scheduleCallback(NormalPriority, loop);
-  }
-  scheduleCallback(NormalPriority, loop);
-}
-
-function runTestEleven() {
-  clearTestResult(11);
-  updateTestResult(11, `Running work for 10 seconds...`);
-  var testStartTime = now();
-  var lastInsertion = 0;
-  var accumulatedWork = 0
-  function loop() {
-    var startTime = now();
-    var timeSinceLastDOMInteraction = startTime - lastInsertion;
-    if (timeSinceLastDOMInteraction > 15) {
-      lastInsertion = startTime;
-      var node = document.createElement('div');
-      node.textContent = startTime;
-      document.body.appendChild(node);
-      document.body.clientHeight; // force layout
-    }
-    while (!shouldYield()) {}
-    var endTime = now();
-    accumulatedWork += endTime - startTime;
-    var runTime = endTime - testStartTime;
-    if (runTime > 10000) {
-      updateTestResult(11, `Ran scheduled work for ${(100 * accumulatedWork / runTime).toFixed(2)}% of the time.`);
-      displayTestResult(11);
-      return;
-    }
-    scheduleCallback(NormalPriority, loop);
-  }
-  scheduleCallback(NormalPriority, loop);
-}
-
     </script type="text/babel">
   </body>
-</html>
+</html>

fixtures/ssr/src/components/App.js

@@ -1,32 +1,17 @@
-import React, {useContext, useState, Suspense} from 'react';
+import React, {Component} from 'react';
 
 import Chrome from './Chrome';
 import Page from './Page';
-import Page2 from './Page2';
-import Theme from './Theme';
 
-function LoadingIndicator() {
-  let theme = useContext(Theme);
-  return <div className={theme + '-loading'}>Loading...</div>;
-}
-
-export default function App({assets}) {
-  let [CurrentPage, switchPage] = useState(() => Page);
-  return (
-    <Chrome title="Hello World" assets={assets}>
-      <div>
-        <h1>Hello World</h1>
-        <a className="link" onClick={() => switchPage(() => Page)}>
-          Page 1
-        </a>
-        {' | '}
-        <a className="link" onClick={() => switchPage(() => Page2)}>
-          Page 2
-        </a>
-        <Suspense fallback={<LoadingIndicator />}>
-          <CurrentPage />
-        </Suspense>
-      </div>
-    </Chrome>
-  );
+export default class App extends Component {
+  render() {
+    return (
+      <Chrome title="Hello World" assets={this.props.assets}>
+        <div>
+          <h1>Hello World</h1>
+          <Page />
+        </div>
+      </Chrome>
+    );
+  }
 }

fixtures/ssr/src/components/Chrome.css

@@ -3,27 +3,3 @@ body {
   padding: 0;
   font-family: sans-serif;
 }
-
-body.light {
-  background-color: #FFFFFF;
-  color: #333333;
-}
-
-body.dark {
-  background-color: #000000;
-  color: #CCCCCC;
-}
-
-.light-loading {
-  margin: 10px 0;
-  padding: 10px;
-  background-color: #CCCCCC;
-  color: #666666;
-}
-
-.dark-loading {
-  margin: 10px 0;
-  padding: 10px;
-  background-color: #333333;
-  color: #999999;
-}

fixtures/ssr/src/components/Chrome.js

@@ -1,11 +1,8 @@
 import React, {Component} from 'react';
 
-import Theme, {ThemeToggleButton} from './Theme';
-
 import './Chrome.css';
 
 export default class Chrome extends Component {
-  state = {theme: 'light'};
   render() {
     const assets = this.props.assets;
     return (
@@ -17,27 +14,13 @@ export default class Chrome extends Component {
           <link rel="stylesheet" href={assets['main.css']} />
           <title>{this.props.title}</title>
         </head>
-        <body className={this.state.theme}>
+        <body>
           <noscript
             dangerouslySetInnerHTML={{
               __html: `<b>Enable JavaScript to run this app.</b>`,
             }}
           />
-          <Theme.Provider value={this.state.theme}>
-            {this.props.children}
-            <div>
-              <ThemeToggleButton
-                onChange={theme => {
-                  React.unstable_withSuspenseConfig(
-                    () => {
-                      this.setState({theme});
-                    },
-                    {timeoutMs: 6000}
-                  );
-                }}
-              />
-            </div>
-          </Theme.Provider>
+          {this.props.children}
           <script
             dangerouslySetInnerHTML={{
               __html: `assetManifest = ${JSON.stringify(assets)};`,

fixtures/ssr/src/components/Page.css

@@ -1,16 +1,3 @@
-.link {
+.bold {
   font-weight: bold;
-  cursor: pointer;
-}
-.light-box {
-  margin: 10px 0;
-  padding: 10px;
-  background-color: #CCCCCC;
-  color: #333333;
-}
-.dark-box {
-  margin: 10px 0;
-  padding: 10px;
-  background-color: #333333;
-  color: #CCCCCC;
 }

fixtures/ssr/src/components/Page.js

@@ -1,8 +1,5 @@
 import React, {Component} from 'react';
 
-import Theme from './Theme';
-import Suspend from './Suspend';
-
 import './Page.css';
 
 const autofocusedInputs = [
@@ -17,22 +14,17 @@ export default class Page extends Component {
   };
   render() {
     const link = (
-      <a className="link" onClick={this.handleClick}>
+      <a className="bold" onClick={this.handleClick}>
         Click Here
       </a>
     );
     return (
-      <div className={this.context + '-box'}>
-        <Suspend>
-          <p suppressHydrationWarning={true}>
-            A random number: {Math.random()}
-          </p>
-          <p>Autofocus on page load: {autofocusedInputs}</p>
-          <p>{!this.state.active ? link : 'Thanks!'}</p>
-          {this.state.active && <p>Autofocus on update: {autofocusedInputs}</p>}
-        </Suspend>
+      <div>
+        <p suppressHydrationWarning={true}>A random number: {Math.random()}</p>
+        <p>Autofocus on page load: {autofocusedInputs}</p>
+        <p>{!this.state.active ? link : 'Thanks!'}</p>
+        {this.state.active && <p>Autofocus on update: {autofocusedInputs}</p>}
       </div>
     );
   }
 }
-Page.contextType = Theme;

fixtures/ssr/src/components/Page2.js

@@ -1,15 +0,0 @@
-import React, {useContext} from 'react';
-
-import Theme from './Theme';
-import Suspend from './Suspend';
-
-import './Page.css';
-
-export default function Page2() {
-  let theme = useContext(Theme);
-  return (
-    <div className={theme + '-box'}>
-      <Suspend>Content of a different page</Suspend>
-    </div>
-  );
-}

fixtures/ssr/src/components/Suspend.js

@@ -1,21 +0,0 @@
-let promise = null;
-let isResolved = false;
-
-export default function Suspend({children}) {
-  // This will suspend the content from rendering but only on the client.
-  // This is used to demo a slow loading app.
-  if (typeof window === 'object') {
-    if (!isResolved) {
-      if (promise === null) {
-        promise = new Promise(resolve => {
-          setTimeout(() => {
-            isResolved = true;
-            resolve();
-          }, 6000);
-        });
-      }
-      throw promise;
-    }
-  }
-  return children;
-}

fixtures/ssr/src/components/Theme.js

@@ -1,25 +0,0 @@
-import React, {createContext, useContext, useState} from 'react';
-
-const Theme = createContext('light');
-
-export default Theme;
-
-export function ThemeToggleButton({onChange}) {
-  let theme = useContext(Theme);
-  let [targetTheme, setTargetTheme] = useState(theme);
-  function toggleTheme() {
-    let newTheme = theme === 'light' ? 'dark' : 'light';
-    // High pri, responsive update.
-    setTargetTheme(newTheme);
-    // Perform the actual theme change in a separate update.
-    setTimeout(() => onChange(newTheme), 0);
-  }
-  if (targetTheme !== theme) {
-    return 'Switching to ' + targetTheme + '...';
-  }
-  return (
-    <a className="link" onClick={toggleTheme}>
-      Switch to {theme === 'light' ? 'Dark' : 'Light'} theme
-    </a>
-  );
-}

fixtures/ssr/src/index.js

@@ -1,7 +1,6 @@
 import React from 'react';
-import {unstable_createRoot} from 'react-dom';
+import {hydrate} from 'react-dom';
 
 import App from './components/App';
 
-let root = unstable_createRoot(document, {hydrate: true});
-root.render(<App assets={window.assetManifest} />);
+hydrate(<App assets={window.assetManifest} />, document);

fixtures/tracing/index.html

@@ -46,7 +46,7 @@
     </p>
     <h3>
       Tests
-      <button id="run-test-button" onClick="runAllTests()">Run all tests</button>
+      <button onClick="runAllTests()">Run all tests</button>
     </h3>
     <ol>
       <li id="checkSchedulerAPI" data-value="...">
@@ -62,17 +62,6 @@
         <strong>Test end-to-end integration</strong>
       </li>
     </ol>
-
-    <script>
-      if (window.location.search.includes('puppeteer=true')) {
-        // Colocated calls to performance.now() often yield different values in Puppeteer.
-        // This causes the Scheduler API test to fail.
-        // For the purposes of our automated release scripts,
-        // Coerce tests to use Date.now() instead to reduce the chances of a false positive.
-        window.performance = {now: Date.now};
-      }
-    </script>
-
     <!-- Load the tracing API before react to test that it's lazily evaluated -->
     <script src="../../build/node_modules/scheduler/umd/scheduler.development.js"></script>
     <script src="../../build/node_modules/scheduler/umd/scheduler-tracing.development.js"></script>

fixtures/tracing/script.js

@@ -36,8 +36,7 @@ function checkSchedulerAPI() {
       throw 'API is not defined';
     }
 
-    const abs = Math.abs(Scheduler.unstable_now() - performance.now());
-    if (typeof abs !== 'number' || Number.isNaN(abs) || abs > 5) {
+    if (Scheduler.unstable_now() !== performance.now()) {
       throw 'API does not work';
     }
 
@@ -176,7 +175,7 @@ function checkEndToEndIntegration() {
       SchedulerTracing.unstable_trace('render', 123, () => {
         ReactDOM.render(
           React.createElement(
-            React.Profiler,
+            React.unstable_Profiler,
             {id: 'profiler', onRender},
             React.createElement('div', null, 'hi')
           ),

fixtures/unstable-async/suspense/.gitignore

@@ -0,0 +1,14 @@
+# See http://help.github.com/ignore-files/ for more about ignoring files.
+
+# dependencies
+node_modules
+
+# testing
+coverage
+
+# production
+build
+
+# misc
+.DS_Store
+npm-debug.log

fixtures/unstable-async/suspense/README.md

@@ -0,0 +1,31 @@
+# IO "suspense" demo
+
+## What is this fixture?
+
+This is a demo application based on [Dan Abramov's](https://github.com/gaearon) recent [JSConf Iceland talk](https://reactjs.org/blog/2018/03/01/sneak-peek-beyond-react-16.html) about React.
+
+It depends on a local build of React and enables us to easily test async and "suspense" APIs in a more "real world app" like context.
+
+## Can I use this code in production?
+
+No. The APIs being tested here are unstable and some of them have still not been released to NPM. For now, this fixture is only a test harness.
+
+## How do I run this fixture?
+
+Clone the React repository.
+
+Follow these steps:
+
+```shell
+# 1: Build react from source
+cd /path/to/react
+yarn
+yarn build dom-client,core,react-cache,scheduler --type=NODE
+
+# 2: Install fixture dependencies
+cd fixtures/unstable-async/suspense/
+yarn
+
+# 3: Run the app
+yarn start
+```

fixtures/unstable-async/suspense/package.json

@@ -0,0 +1,40 @@
+{
+  "name": "io-demo",
+  "version": "0.1.0",
+  "private": true,
+  "homepage": ".",
+  "devDependencies": {
+    "gh-pages": "^1.1.0",
+    "react-scripts": "^1.1.4"
+  },
+  "dependencies": {
+    "clipboard": "^1.7.1",
+    "github-fork-ribbon-css": "^0.2.1",
+    "react-draggable": "^3.0.5"
+  },
+  "scripts": {
+    "prestart": "cp -r ../../../build/node_modules/* ./node_modules/",
+    "prebuild": "cp -r ../../../build/node_modules/* ./node_modules/",
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test --env=jsdom",
+    "eject": "react-scripts eject",
+    "deploy": "gh-pages -d build"
+  },
+  "eslintConfig": {
+    "extends": "./node_modules/react-scripts/config/eslint.js"
+  },
+  "browserslist": {
+    "development": [
+      "last 2 chrome versions",
+      "last 2 firefox versions",
+      "last 2 edge versions"
+    ],
+    "production": [
+      ">1%",
+      "last 4 versions",
+      "Firefox ESR",
+      "not ie < 11"
+    ]
+  }
+}