Fix lint after automated replacements

Ran these, then prettier, then these again.

```
codemod --accept-all -d packages -m '\(\s*([a-zA-Z.]+) === NoWork\s*\|\|\s*\1 (>=?) ([a-zA-Z.]+)\s*\)' '(\1 \2 \3)'
codemod --accept-all -d packages -m '\(\s*([a-zA-Z.]+) === NoWork\s*\|\|\s*([a-zA-Z.]+) (<=?) \1\s*\)' '(\2 \3 \1)'

codemod --accept-all -d packages -m '(?<![.\w])([a-zA-Z.]+) !== NoWork\s*&&\s*\1 (<) ([a-zA-Z.]+)' '\1 \2 \3'
codemod --accept-all -d packages -m '(?<![.\w])([a-zA-Z.]+) !== NoWork\s*&&\s*([a-zA-Z.]+) (>) \1' '\2 \3 \1'

codemod --accept-all -d packages -m '(?<![.\w])([a-zA-Z.]+) === NoWork\s*\|\|\s*\1 (>=?) ([a-zA-Z.]+)\s*\?\s' '\1 \2 \3 ? '
codemod --accept-all -d packages -m '(?<![.\w])([a-zA-Z.]+) === NoWork\s*\|\|\s*([a-zA-Z.]+) (<=?) \1\s*\?\s' '\2 \3 \1 ? '
```

.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

@@ -1,249 +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
-
 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: yarn test --maxWorkers=2
-
-  test_source_persistent:
-    docker: *docker
-    environment: *environment
-
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run: yarn test-persistent --maxWorkers=2
-
-  test_source_prod:
-    docker: *docker
-    environment: *environment
-
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run: yarn test-prod --maxWorkers=2
-
-  build:
-    docker: *docker
-    environment: *environment
-    parallelism: 20
-    steps:
-      - checkout
-      - *restore_yarn_cache
-      - *run_yarn
-      - run: ./scripts/circleci/add_build_info_json.sh
-      - run: ./scripts/circleci/update_package_versions.sh
-      - run: yarn build
-      - persist_to_workspace:
-          root: build
-          paths:
-            - facebook-www
             - node_modules
-            - react-native
-            - dist
-            - sizes/*.json
-
-  process_artifacts:
-    docker: *docker
-    environment: *environment
-    steps:
-      - checkout
-      - attach_workspace: *attach_workspace
-      - *restore_yarn_cache
-      - *run_yarn
-      - run: node ./scripts/rollup/consolidateBundleSizes.js
-      - run: node ./scripts/tasks/danger
-      - 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
-
-  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: 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
-          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: yarn test-build-prod --maxWorkers=2
-
-workflows:
-  version: 2
-  commit:
-    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
-      - lint_build:
-          requires:
-            - build
-      - test_build:
-          requires:
-            - build
-      - test_build_prod:
-          requires:
-            - build
-      - test_dom_fixtures:
-          requires:
-            - build
-  hourly:
-    triggers:
-      - schedule:
-          cron: "0 * * * *"
-          filters:
-            branches:
-              only:
-                - master
-    jobs:
-      - setup
-      - test_fuzz:
-          requires:
-            - setup

.eslintrc.js

@@ -1,10 +1,5 @@
 'use strict';
 
-const {
-  es5Paths,
-  esNextPaths,
-} = require('./scripts/shared/pathsByLanguageVersion');
-
 const OFF = 0;
 const ERROR = 2;
 
@@ -12,18 +7,14 @@ 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'],
-
-  parser: 'babel-eslint',
-  parserOptions: {
-    ecmaVersion: 8,
-    sourceType: 'script',
-    ecmaFeatures: {
-      experimentalObjectRestSpread: true,
-    },
-  },
+  plugins: [
+    'jest',
+    'no-for-of-loops',
+    'react',
+    'react-internal',
+  ],
 
   // We're stricter than the default config, mostly. We'll override a few rules
   // and then enable some React specific ones.
@@ -35,8 +26,8 @@ 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,
@@ -46,26 +37,13 @@ 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}],
 
-    // We apply these settings to files that should run on Node.
-    // They can't use JSX or ES6 modules, and must be in strict mode.
-    // They can, however, use other ES6 features.
-    // (Note these rules are overridden later for source files.)
-    'no-var': ERROR,
-    strict: ERROR,
-
-    // Enforced by Prettier
-    // TODO: Prettier doesn't handle long strings or long comments. Not a big
-    // deal. But I turned it off because loading the plugin causes some obscure
-    // syntax error and it didn't seem worth investigating.
-    'max-len': OFF,
-
     // React & JSX
     // Our transforms set this automatically
     'react/jsx-boolean-value': [ERROR, 'always'],
@@ -79,10 +57,7 @@ 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).
@@ -96,49 +71,13 @@ module.exports = {
   },
 
   overrides: [
-    {
-      // We apply these settings to files that we ship through npm.
-      // They must be ES5.
-      files: es5Paths,
-      parser: 'espree',
-      parserOptions: {
-        ecmaVersion: 5,
-        sourceType: 'script',
-      },
-      rules: {
-        'no-var': OFF,
-        strict: ERROR,
-      },
-    },
-    {
-      // We apply these settings to the source files that get compiled.
-      // They can use all features including JSX (but shouldn't use `var`).
-      files: esNextPaths,
-      parser: 'babel-eslint',
-      parserOptions: {
-        ecmaVersion: 8,
-        sourceType: 'module',
-      },
-      rules: {
-        'no-var': ERROR,
-        strict: OFF,
-      },
-    },
     {
       files: ['**/__tests__/*.js'],
       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: {

.prettierrc.js

@@ -1,5 +1,3 @@
-'use strict';
-
 const {esNextPaths} = require('./scripts/shared/pathsByLanguageVersion');
 
 module.exports = {

.watchmanconfig

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

CHANGELOG.md

@@ -4,228 +4,9 @@
     Changes that have landed in master but are not yet released.
     Click to see more.
   </summary>
+
 </details>
 
-## 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))
-
-## 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))
-
-### Scheduler (Experimental)
-
-* Switch from deadline object to `shouldYield` API. ([@acdlite](https://github.com/acdlite) in [#14025](https://github.com/facebook/react/pull/14025))
-
-
-## 16.6.0 (October 23, 2018)
-
-### React
-
-* Add `React.memo()` as an alternative to `PureComponent` for functions. ([@acdlite](https://github.com/acdlite) in [#13748](https://github.com/facebook/react/pull/13748))
-* Add `React.lazy()` for code splitting components. ([@acdlite](https://github.com/acdlite) in [#13885](https://github.com/facebook/react/pull/13885))
-* `React.StrictMode` now warns about legacy context API. ([@bvaughn](https://github.com/bvaughn) in [#13760](https://github.com/facebook/react/pull/13760))
-* `React.StrictMode` now warns about `findDOMNode`. ([@sebmarkbage](https://github.com/sebmarkbage) in [#13841](https://github.com/facebook/react/pull/13841))
-* Rename `unstable_AsyncMode` to `unstable_ConcurrentMode`. ([@trueadm](https://github.com/trueadm) in [#13732](https://github.com/facebook/react/pull/13732))
-* Rename `unstable_Placeholder` to `Suspense`, and `delayMs` to `maxDuration`. ([@gaearon](https://github.com/gaearon) in [#13799](https://github.com/facebook/react/pull/13799) and [@sebmarkbage](https://github.com/sebmarkbage) in [#13922](https://github.com/facebook/react/pull/13922))
-
-### React DOM
-
-* Add `contextType` as a more ergonomic way to subscribe to context from a class. ([@bvaughn](https://github.com/bvaughn) in [#13728](https://github.com/facebook/react/pull/13728))
-* Add `getDerivedStateFromError` lifecycle method for catching errors in a future asynchronous server-side renderer. ([@bvaughn](https://github.com/bvaughn) in [#13746](https://github.com/facebook/react/pull/13746))
-* Warn when `<Context>` is used instead of `<Context.Consumer>`. ([@trueadm](https://github.com/trueadm) in [#13829](https://github.com/facebook/react/pull/13829))
-* Fix gray overlay on iOS Safari. ([@philipp-spiess](https://github.com/philipp-spiess) in [#13778](https://github.com/facebook/react/pull/13778))
-* Fix a bug caused by overwriting `window.event` in development. ([@sergei-startsev](https://github.com/sergei-startsev) in [#13697](https://github.com/facebook/react/pull/13697))
-
-### React DOM Server
-
-* Add support for `React.memo()`. ([@alexmckenley](https://github.com/alexmckenley) in [#13855](https://github.com/facebook/react/pull/13855))
-* Add support for `contextType`. ([@alexmckenley](https://github.com/alexmckenley) and [@sebmarkbage](https://github.com/sebmarkbage) in [#13889](https://github.com/facebook/react/pull/13889))
-
-### Scheduler (Experimental)
-
-* Rename the package to `scheduler`. ([@gaearon](https://github.com/gaearon) in [#13683](https://github.com/facebook/react/pull/13683))
-* Support priority levels, continuations, and wrapped callbacks. ([@acdlite](https://github.com/acdlite) in [#13720](https://github.com/facebook/react/pull/13720) and [#13842](https://github.com/facebook/react/pull/13842))
-* Improve the fallback mechanism in non-DOM environments. ([@acdlite](https://github.com/acdlite) in [#13740](https://github.com/facebook/react/pull/13740))
-* Schedule `requestAnimationFrame` earlier. ([@acdlite](https://github.com/acdlite) in [#13785](https://github.com/facebook/react/pull/13785))
-* Fix the DOM detection to be more thorough. ([@trueadm](https://github.com/trueadm) in [#13731](https://github.com/facebook/react/pull/13731))
-* Fix bugs with interaction tracing. ([@bvaughn](https://github.com/bvaughn) in [#13590](https://github.com/facebook/react/pull/13590))
-* Add the `envify` transform to the package. ([@mridgway](https://github.com/mridgway) in [#13766](https://github.com/facebook/react/pull/13766))
-
 ## 16.5.2 (September 18, 2018)
 
 ### React DOM
@@ -279,7 +60,7 @@ 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))
@@ -470,7 +251,7 @@ 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

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)
 //
@@ -25,26 +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');
 
-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')
 );
 
 /**
@@ -112,74 +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;
-  }
-
   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];
-      // This must match the name of the CI job that creates the build artifacts
-      if (status.context === 'ci/circleci: process_artifacts') {
-        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
@@ -272,7 +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')}
@@ -280,7 +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/App.js

@@ -860,7 +860,7 @@ class App extends React.Component {
         });
         break;
       default:
-        throw new Error('Switch statement should be exhaustive');
+        throw new Error('Switch statement should be exhuastive');
     }
 
     // Sort
@@ -887,7 +887,7 @@ class App extends React.Component {
         });
       }
       default:
-        throw new Error('Switch statement should be exhaustive');
+        throw new Error('Switch statement should be exhuastive');
     }
   }
 

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/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

@@ -1,194 +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';
-
-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 />);
-    });
-  });
-});
-
-it('warns when using createRoot() + .render', () => {
-  const root = ReactDOM.unstable_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/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

@@ -5,7 +5,7 @@ import TestCase from '../../TestCase';
 const React = window.React;
 const ReactDOM = window.ReactDOM;
 
-const Suspense = React.Suspense;
+const Suspense = React.unstable_Suspense;
 
 let cache = new Set();
 
@@ -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/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

@@ -50,7 +50,7 @@ h3 {
   margin: 8px 0 16px;
 }
 
-h4, h5, h6 {
+h4, h4, h5, h6 {
   font-size: 16px;
   margin: 0 0 16px;
 }
@@ -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"
-  resolved "https://registry.yarnpkg.com/acorn-jsx/-/acorn-jsx-3.0.1.tgz#afdf9488fb1ecefc8348f6fb22f464e32a58b36b"
-  integrity sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=
-  dependencies:
-    acorn "^3.0.4"
-
-acorn@^3.0.4:
-  version "3.3.0"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-3.3.0.tgz#45e37fb39e8da3f25baee3ff5369e2bb5f22017a"
-  integrity sha1-ReN/s56No/JbruP/U2niu18iAXo=
-
-acorn@^5.5.0:
-  version "5.7.3"
-  resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.3.tgz#67aa231bf8812974b85235a96771eb6bd07ea279"
-  integrity sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==
-
-ajv-keywords@^3.0.0:
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.2.0.tgz#e86b819c602cf8821ad637413698f1dec021847a"
-  integrity sha1-6GuBnGAs+IIa1jdBNpjx3sAhhHo=
-
-ajv@^6.0.1:
-  version "6.7.0"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.7.0.tgz#e3ce7bb372d6577bb1839f1dfdfcbf5ad2948d96"
-  integrity sha512-RZXPviBTtfmtka9n9sy1N5M5b82CbxWIR6HIis4s3WQTXDJamc/0gpCWNGz6EWdWp4DOfjzJfhz/AS9zVPjjWg==
-  dependencies:
-    fast-deep-equal "^2.0.1"
-    fast-json-stable-stringify "^2.0.0"
-    json-schema-traverse "^0.4.1"
-    uri-js "^4.2.2"
-
-ansi-escapes@^3.0.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-3.1.0.tgz#f73207bb81207d75fd6c83f125af26eea378ca30"
-  integrity sha512-UgAb8H9D41AQnu/PbWlCofQVcnV4Gs2bBJi9eZPxfU/hgglFh3SMDMENRIqdr7H6XFnXdoknctFByVsCOotTVw==
-
-ansi-regex@^2.0.0:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
-  integrity sha1-w7M6te42DYbg5ijwRorn7yfWVN8=
-
-ansi-regex@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
-  integrity sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=
-
-ansi-styles@^2.2.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
-  integrity sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=
-
-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"
-
-argparse@^1.0.7:
-  version "1.0.10"
-  resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
-  integrity sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==
-  dependencies:
-    sprintf-js "~1.0.2"
-
-babel-code-frame@^6.22.0:
-  version "6.26.0"
-  resolved "https://registry.yarnpkg.com/babel-code-frame/-/babel-code-frame-6.26.0.tgz#63fd43f7dc1e3bb7ce35947db8fe369a3f58c74b"
-  integrity sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=
-  dependencies:
-    chalk "^1.1.3"
-    esutils "^2.0.2"
-    js-tokens "^3.0.2"
-
-balanced-match@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
-  integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
-
-brace-expansion@^1.1.7:
-  version "1.1.11"
-  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
-  integrity sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==
-  dependencies:
-    balanced-match "^1.0.0"
-    concat-map "0.0.1"
-
-buffer-from@^1.0.0:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
-  integrity sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==
-
-caller-path@^0.1.0:
-  version "0.1.0"
-  resolved "https://registry.yarnpkg.com/caller-path/-/caller-path-0.1.0.tgz#94085ef63581ecd3daa92444a8fe94e82577751f"
-  integrity sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=
-  dependencies:
-    callsites "^0.2.0"
-
-callsites@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/callsites/-/callsites-0.2.0.tgz#afab96262910a7f33c19a5775825c69f34e350ca"
-  integrity sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=
-
-chalk@^1.1.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/chalk/-/chalk-1.1.3.tgz#a8115c55e4a702fe4d150abd3872822a7e09fc98"
-  integrity sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=
-  dependencies:
-    ansi-styles "^2.2.1"
-    escape-string-regexp "^1.0.2"
-    has-ansi "^2.0.0"
-    strip-ansi "^3.0.0"
-    supports-color "^2.0.0"
-
-chalk@^2.0.0, chalk@^2.1.0:
-  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"
-
-chardet@^0.4.0:
-  version "0.4.2"
-  resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.4.2.tgz#b5473b33dc97c424e5d98dc87d55d4d8a29c8bf2"
-  integrity sha1-tUc7M9yXxCTl2Y3IfVXU2KKci/I=
-
-circular-json@^0.3.1:
-  version "0.3.3"
-  resolved "https://registry.yarnpkg.com/circular-json/-/circular-json-0.3.3.tgz#815c99ea84f6809529d2f45791bdf82711352d66"
-  integrity sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==
-
-cli-cursor@^2.1.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/cli-cursor/-/cli-cursor-2.1.0.tgz#b35dac376479facc3e94747d41d0d0f5238ffcb5"
-  integrity sha1-s12sN2R5+sw+lHR9QdDQ9SOP/LU=
-  dependencies:
-    restore-cursor "^2.0.0"
-
-cli-width@^2.0.0:
-  version "2.2.0"
-  resolved "https://registry.yarnpkg.com/cli-width/-/cli-width-2.2.0.tgz#ff19ede8a9a5e579324147b0c11f0fbcbabed639"
-  integrity sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=
-
-color-convert@^1.9.0:
-  version "1.9.3"
-  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
-  integrity sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==
-  dependencies:
-    color-name "1.1.3"
-
-color-name@1.1.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
-  integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
-
-concat-map@0.0.1:
-  version "0.0.1"
-  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
-  integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
-
-concat-stream@^1.6.0:
-  version "1.6.2"
-  resolved "https://registry.yarnpkg.com/concat-stream/-/concat-stream-1.6.2.tgz#904bdf194cd3122fc675c77fc4ac3d4ff0fd1a34"
-  integrity sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==
-  dependencies:
-    buffer-from "^1.0.0"
-    inherits "^2.0.3"
-    readable-stream "^2.2.2"
-    typedarray "^0.0.6"
-
-core-util-is@~1.0.0:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
-  integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
-
-debug@^2.6.8:
-  version "2.6.9"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
-  integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
-  dependencies:
-    ms "2.0.0"
-
-deep-is@~0.1.3:
-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz#b369d6fb5dbc13eecf524f91b070feedc357cf34"
-  integrity sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=
-
-doctrine@^2.0.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/doctrine/-/doctrine-2.1.0.tgz#5cd01fc101621b42c4cd7f5d1a66243716d3f39d"
-  integrity sha512-35mSku4ZXK0vfCuHEDAwt55dg2jNajHZ1odvF+8SSr82EsZY4QmXfuWso8oEd8zRhVObSN18aM0CjSdoBX7zIw==
-  dependencies:
-    esutils "^2.0.2"
-
-escape-string-regexp@^1.0.2, escape-string-regexp@^1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
-  integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
-
-"eslint-plugin-react-hooks@link:./proxy":
-  version "0.0.0"
-  uid ""
-
-eslint-scope@^3.7.1:
-  version "3.7.3"
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-    inherits "~2.0.3"
-    isarray "~1.0.0"
-    process-nextick-args "~2.0.0"
-    safe-buffer "~5.1.1"
-    string_decoder "~1.1.1"
-    util-deprecate "~1.0.1"
-
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-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/require-uncached/-/require-uncached-1.0.3.tgz#4e0d56d6c9662fd31e43011c4b95aa49955421d3"
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-    resolve-from "^1.0.0"
-
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-
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-    onetime "^2.0.0"
-    signal-exit "^3.0.2"
-
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-  version "2.6.3"
-  resolved "https://registry.yarnpkg.com/rimraf/-/rimraf-2.6.3.tgz#b2d104fe0d8fb27cf9e0a1cda8262dd3833c6cab"
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-    glob "^7.1.3"
-
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-  version "2.3.0"
-  resolved "https://registry.yarnpkg.com/run-async/-/run-async-2.3.0.tgz#0371ab4ae0bdd720d4166d7dfda64ff7a445a6c0"
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-    is-promise "^2.1.0"
-
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-  version "4.0.8"
-  resolved "https://registry.yarnpkg.com/rx-lite-aggregates/-/rx-lite-aggregates-4.0.8.tgz#753b87a89a11c95467c4ac1626c4efc4e05c67be"
-  integrity sha1-dTuHqJoRyVRnxKwWJsTvxOBcZ74=
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-    rx-lite "*"
-
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-  version "4.0.8"
-  resolved "https://registry.yarnpkg.com/rx-lite/-/rx-lite-4.0.8.tgz#0b1e11af8bc44836f04a6407e92da42467b79444"
-  integrity sha1-Cx4Rr4vESDbwSmQH6S2kJGe3lEQ=
-
-safe-buffer@~5.1.0, safe-buffer@~5.1.1:
-  version "5.1.2"
-  resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
-  integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
-
-"safer-buffer@>= 2.1.2 < 3":
-  version "2.1.2"
-  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
-  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
-
-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"
-
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-  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==
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-    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"
-
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-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
-  integrity sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=
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-    ansi-regex "^2.0.0"
-
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-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-4.0.0.tgz#a8479022eb1ac368a871389b635262c505ee368f"
-  integrity sha1-qEeQIusaw2iocTibY1JixQXuNo8=
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-    ansi-regex "^3.0.0"
-
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-  version "2.0.1"
-  resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
-  integrity sha1-PFMZQukIwml8DsNEhYwobHygpgo=
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-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
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-  version "5.5.0"
-  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
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-
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-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/table/-/table-4.0.3.tgz#00b5e2b602f1794b9acaf9ca908a76386a7813bc"
-  integrity sha512-S7rnFITmBH1EnyKcvxBh1LjYeQMmnZtCXSEbHcH6S0NoKit24ZuFO/T1vDcLdYsLQkM188PVVhQmzKIuThNkKg==
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-    ajv-keywords "^3.0.0"
-    chalk "^2.1.0"
-    lodash "^4.17.4"
-    slice-ansi "1.0.0"
-    string-width "^2.1.1"
-
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-  version "0.2.0"
-  resolved "https://registry.yarnpkg.com/text-table/-/text-table-0.2.0.tgz#7f5ee823ae805207c00af2df4a84ec3fcfa570b4"
-  integrity sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=
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-  version "2.3.8"
-  resolved "https://registry.yarnpkg.com/through/-/through-2.3.8.tgz#0dd4c9ffaabc357960b1b724115d7e0e86a2e1f5"
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-  version "0.0.33"
-  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.0.33.tgz#6d34335889768d21b2bcda0aa277ced3b1bfadf9"
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-
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-  version "0.3.2"
-  resolved "https://registry.yarnpkg.com/type-check/-/type-check-0.3.2.tgz#5884cab512cf1d355e3fb784f30804b2b520db72"
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-  resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
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-    punycode "^2.1.0"
-
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-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
-  integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
-
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-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
-  integrity sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=
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-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
-  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
-
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-  version "0.2.1"
-  resolved "https://registry.yarnpkg.com/write/-/write-0.2.1.tgz#5fc03828e264cea3fe91455476f7a3c566cb0757"
-  integrity sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=
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-    mkdirp "^0.5.1"
-
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-  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-debugger/src/describeFibers.js

@@ -90,17 +90,17 @@ export default function describeFibers(rootFiber, workInProgress) {
   const workInProgressID = acknowledgeFiber(workInProgress);
 
   let currentIDs = new Set();
-  function markAsCurrent(id) {
+  function markAsCurent(id) {
     currentIDs.add(id);
     const fiber = descriptions[id];
     if (fiber.sibling) {
-      markAsCurrent(fiber.sibling);
+      markAsCurent(fiber.sibling);
     }
     if (fiber.child) {
-      markAsCurrent(fiber.child);
+      markAsCurent(fiber.child);
     }
   }
-  markAsCurrent(rootID);
+  markAsCurent(rootID);
 
   return {
     descriptions,

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

@@ -48,7 +48,7 @@
         <div id="test-2"></div>
     </li>
     <li>
-      <p>Schedules callbacks in correct order when they use scheduleCallback to schedule themselves</p>
+      <p>Schedules callbacks in correct order when they use scheduleWork to schedule themselves</p>
       <button onClick="runTestThree()">Run Test 3</button>
       <div><b>Expected:</b></div>
       <div id="test-3-expected">
@@ -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);
+  scheduleWork(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);
+  scheduleWork(cbA);
   updateTestResult(2, 'scheduled CbA');
-  scheduleCallback(NormalPriority, cbB);
+  scheduleWork(cbB);
   updateTestResult(2, 'scheduled CbB');
   logWhenFramesStart(2, () => {
     displayTestResult(2);
@@ -345,12 +255,12 @@ function runTestTwo() {
 
 function runTestThree() {
   // Test 3
-  // Schedules callbacks in correct order when they use scheduleCallback to schedule themselves
+  // Schedules callbacks in correct order when they use scheduleWork to schedule themselves
   clearTestResult(3);
   let callbackAIterations = 0;
   const cbA = (x) => {
     if (callbackAIterations < 1) {
-      scheduleCallback(NormalPriority, cbA);
+      scheduleWork(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);
+  scheduleWork(cbA);
   updateTestResult(3, 'scheduled CbA');
-  scheduleCallback(NormalPriority, cbB);
+  scheduleWork(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
+  scheduleWork(cbA); // won't time out
   updateTestResult(4, 'scheduled cbA');
-  scheduleCallback(NormalPriority, cbB, {timeout: 100}); // times out later
+  scheduleWork(cbB, {timeout: 100}); // times out later
   updateTestResult(4, 'scheduled cbB');
-  scheduleCallback(NormalPriority, cbC, {timeout: 1}); // will time out fast
+  scheduleWork(cbC, {timeout: 1}); // will time out fast
   updateTestResult(4, 'scheduled cbC');
-  scheduleCallback(NormalPriority, cbD); // won't time out
+  scheduleWork(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);
+    scheduleWork(cbA);
     console.log('scheduled cbA');
-    scheduleCallback(NormalPriority, cbB); // will throw error
+    scheduleWork(cbB); // will throw error
     console.log('scheduled cbB');
-    scheduleCallback(NormalPriority, cbC);
+    scheduleWork(cbC);
     console.log('scheduled cbC');
-    scheduleCallback(NormalPriority, cbD); // will throw error
+    scheduleWork(cbD); // will throw error
     console.log('scheduled cbD');
-    scheduleCallback(NormalPriority, cbE);
+    scheduleWork(cbE);
     console.log('scheduled cbE');
   };
 }
@@ -558,15 +468,15 @@ function runTestSix() {
         });
       });
     });
-    scheduleCallback(NormalPriority, cbA);
+    scheduleWork(cbA);
     console.log('scheduled cbA');
-    scheduleCallback(NormalPriority, cbB); // will throw error
+    scheduleWork(cbB); // will throw error
     console.log('scheduled cbB');
-    scheduleCallback(NormalPriority, cbC, {timeout: 1});
+    scheduleWork(cbC, {timeout: 1});
     console.log('scheduled cbC');
-    scheduleCallback(NormalPriority, cbD, {timeout: 1}); // will throw error
+    scheduleWork(cbD, {timeout: 1}); // will throw error
     console.log('scheduled cbD');
-    scheduleCallback(NormalPriority, cbE, {timeout: 1});
+    scheduleWork(cbE, {timeout: 1});
     console.log('scheduled cbE');
   };
 }
@@ -582,150 +492,10 @@ function runTestSeven() {
     counter++;
     counterNode.innerHTML = counter;
     waitForTimeToPass(100);
-    scheduleCallback(NormalPriority, incrementCounterAndScheduleNextCallback);
+    scheduleWork(incrementCounterAndScheduleNextCallback);
   }
-  scheduleCallback(NormalPriority, incrementCounterAndScheduleNextCallback);
+  scheduleWork(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"
+    ]
+  }
+}

fixtures/unstable-async/suspense/public/index.html

@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <link rel="shortcut icon" href="./src/favicon.ico">
+    <title>React Core Team</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <div id="debugger"></div>
+  </body>
+</html>

fixtures/unstable-async/suspense/public/manifest.json

@@ -0,0 +1,15 @@
+{
+  "short_name": "Emoji Search",
+  "name": "Emoji Search Example App",
+  "icons": [
+    {
+      "src": "favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      "type": "image/x-icon"
+    }
+  ],
+  "start_url": "./index.html",
+  "display": "standalone",
+  "theme_color": "#000000",
+  "background_color": "#ffffff"
+}

fixtures/unstable-async/suspense/src/api/data.js

@@ -0,0 +1,334 @@
+export const coreContributorListJSON = [
+  {
+    id: 'acdlite',
+    name: 'Andrew Clark',
+  },
+  {
+    id: 'bvaughn',
+    name: 'Brian Vaughn',
+  },
+  {
+    id: 'gaearon',
+    name: 'Dan Abramov',
+  },
+  {
+    id: 'trueadm',
+    name: 'Dominic Gannaway',
+  },
+  {
+    id: 'flarnie',
+    name: 'Flarnie Marchan',
+  },
+  {
+    id: 'sebmarkbage',
+    name: 'Sebastian Markbåge',
+  },
+  {
+    id: 'sophiebits',
+    name: 'Sophie Alpert',
+  },
+];
+
+export const userProfileJSON = {
+  acdlite: {
+    id: 'acdlite',
+    name: 'Andrew Clark',
+    image: '/img/acdlite.jpeg',
+    location: 'Redwood City, CA',
+    email: 'acdlite@me.com',
+    tagline: 'React core at Facebook. Hi!',
+  },
+  bvaughn: {
+    id: 'bvaughn',
+    name: 'Brian Vaughn',
+    image: '/img/bvaughn.jpeg',
+    location: 'Mountain View, CA',
+    email: 'brian.david.vaughn@gmail.com',
+    tagline:
+      'React JS core team at @facebook; formerly at @treasure-data and @google.',
+  },
+  gaearon: {
+    id: 'gaearon',
+    name: 'Dan Abramov',
+    image: '/img/gaearon.jpeg',
+    location: 'London, UK',
+    email: 'dan.abramov@me.com',
+    tagline:
+      'Working on @reactjs. Co-author of Redux and Create React App. Building tools for humans.',
+  },
+  flarnie: {
+    id: 'flarnie',
+    name: 'Flarnie Marchan',
+    image: '/img/flarnie.jpeg',
+    location: 'Oakland, CA',
+    email: null,
+    tagline:
+      'Software Engineer at Facebook React Core Team & Co-maintainer of Draft.js',
+  },
+  sebmarkbage: {
+    id: 'sebmarkbage',
+    name: 'Sebastian Markbåge',
+    image: '/img/sebmarkbage.jpeg',
+    location: 'San Francisco',
+    email: 'sebastian@calyptus.eu',
+    tagline: null,
+  },
+  sophiebits: {
+    id: 'sophiebits',
+    name: 'Sophie Alpert',
+    image: '/img/sophiebits.jpeg',
+    location: 'California',
+    email: 'hi@sophiebits.com',
+    tagline:
+      'I like fixing things. eng manager of @reactjs at Facebook. ex-@khanacademy. 💎🌸 she/her. kindness, intersectional feminism, music.',
+  },
+  trueadm: {
+    id: 'trueadm',
+    name: 'Dominic Gannaway',
+    image: '/img/trueadm.jpeg',
+    location: 'London, United Kingdom',
+    email: null,
+    tagline:
+      'Currently an engineer on the React core team at @facebook. Author of @infernojs and t7. Enjoys coding + being a Dad.',
+  },
+};
+export const userRepositoriesListJSON = {
+  acdlite: [
+    {
+      name: 'recompose',
+      url: 'https://github.com/acdlite/recompose',
+      description:
+        'A React utility belt for function components and higher-order components.',
+    },
+    {
+      name: 'react-fiber-architecture',
+      url: 'https://github.com/acdlite/react-fiber-architecture',
+      description: "A description of React's new core algorithm, React Fiber",
+    },
+    {
+      name: 'redux-router',
+      url: 'https://github.com/acdlite/redux-router',
+      description:
+        'Redux bindings for React Router – keep your router state inside your Redux store',
+    },
+    {
+      name: 'flummox',
+      url: 'https://github.com/acdlite/flummox',
+      description: 'Minimal, isomorphic Flux.',
+    },
+    {
+      name: 'redux-rx',
+      url: 'https://github.com/acdlite/redux-rx',
+      description: 'RxJS utilities for Redux.',
+    },
+    {
+      name: 'react-remarkable',
+      url: 'https://github.com/acdlite/react-remarkable',
+      description: 'A React component for rendering Markdown with remarkable',
+    },
+  ],
+  bvaughn: [
+    {
+      name: 'react-virtualized',
+      url: 'https://github.com/bvaughn/react-virtualized',
+      description:
+        'React components for efficiently rendering large lists and tabular data',
+    },
+    {
+      name: 'redux-search',
+      url: 'https://github.com/bvaughn/redux-search',
+      description: 'Redux bindings for client-side search',
+    },
+    {
+      name: 'react-window',
+      url: 'https://github.com/bvaughn/react-window',
+      description:
+        'React components for efficiently rendering large lists and tabular data',
+    },
+    {
+      name: 'react-virtualized-select',
+      url: 'https://github.com/bvaughn/react-virtualized-select',
+      description:
+        'HOC that uses react-virtualized and react-select to display large lists of options in a drop-down',
+    },
+    {
+      name: 'js-search',
+      url: 'https://github.com/bvaughn/js-search',
+      description:
+        'JS Search is an efficient, client-side search library for JavaScript and JSON objects',
+    },
+    {
+      name: 'react-highlight-words',
+      url: 'https://github.com/bvaughn/react-highlight-words',
+      description:
+        'React component to highlight words within a larger body of text',
+    },
+  ],
+  gaearon: [
+    {
+      name: 'facebook/react',
+      url: 'https://github.com/facebook/react',
+      description:
+        'A declarative, efficient, and flexible JavaScript library for building user interfaces.',
+    },
+    {
+      name: 'reduxjs/redux',
+      url: 'https://github.com/reduxjs/redux',
+      description: 'Predictable state container for JavaScript apps',
+    },
+    {
+      name: 'facebook/create-react-app',
+      url: 'https://github.com/facebook/create-react-app',
+      description: 'Create React apps with no build configuration.',
+    },
+    {
+      name: 'reduxjs/redux-devtools',
+      url: 'https://github.com/reduxjs/redux-devtools',
+      description:
+        'DevTools for Redux with hot reloading, action replay, and customizable UI',
+    },
+    {
+      name: 'react-dnd/react-dnd',
+      url: 'https://github.com/react-dnd/react-dnd',
+      description: 'Drag and Drop for React',
+    },
+    {
+      name: 'paularmstrong/normalizr',
+      url: 'https://github.com/paularmstrong/normalizr',
+      description: 'Normalizes nested JSON according to a schema',
+    },
+  ],
+  flarnie: [
+    {
+      name: 'diffux/diffux',
+      url: 'https://github.com/diffux/diffux',
+      description: 'Perceptual diffs of responsive screenshots made simple.',
+    },
+    {
+      name: 'facebook/draft-js',
+      url: 'https://github.com/facebook/draft-js',
+      description: 'A React framework for building text editors.',
+    },
+    {
+      name: 'facebook/react',
+      url: 'https://github.com/facebook/react',
+      description:
+        'A declarative, efficient, and flexible JavaScript library for building user interfaces.',
+    },
+    {
+      name: 'facebook/jest',
+      url: 'https://github.com/facebook/jest',
+      description: '🃏 Delightful JavaScript Testing.',
+    },
+    {
+      name: 'Galooshi/import-js',
+      url: 'https://github.com/Galooshi/import-js',
+      description: 'A tool to simplify importing JS modules',
+    },
+    {
+      name: 'webpack_rails_demo',
+      url: 'https://github.com/flarnie/webpack_rails_demo',
+      description: 'Setting up webpack with Ruby on Rails: a basic demo',
+    },
+  ],
+  sebmarkbage: [
+    {
+      name: 'art',
+      url: 'https://github.com/sebmarkbage/art',
+      description:
+        "Retained mode vector drawing API designed for multiple output modes. There's also a built-in SVG parser.",
+    },
+    {
+      name: 'ecmascript-immutable-data-structures',
+      url:
+        'https://github.com/sebmarkbage/ecmascript-immutable-data-structures',
+      description: null,
+    },
+    {
+      name: 'ocamlrun-wasm',
+      url: 'https://github.com/sebmarkbage/ocamlrun-wasm',
+      description: 'OCamlrun WebAssembly - OCaml Bytecode Interpreter in WASM',
+    },
+    {
+      name: 'ecmascript-generator-expression',
+      url: 'https://github.com/sebmarkbage/ecmascript-generator-expression',
+      description:
+        'Proposal for do Generator Expressions in ECMAScript. Work in progress. Edit Add topics',
+    },
+    {
+      name: 'ecmascript-undefined-propagation',
+      url: 'https://github.com/sebmarkbage/ecmascript-undefined-propagation',
+      description:
+        'ECMAScript proposal to relax the rules to return `undefined` for property access on `null` or `undefined` instead of throwing.',
+    },
+    {
+      name: 'ecmascript-shallow-equal',
+      url: 'https://github.com/sebmarkbage/ecmascript-shallow-equal',
+      description: 'A proposal for ECMAScript for Object.shallowEqual',
+    },
+  ],
+  sophiebits: [
+    {
+      name: 'facebook/react',
+      url: 'https://github.com/facebook/react',
+      description:
+        'A declarative, efficient, and flexible JavaScript library for building user interfaces.',
+    },
+    {
+      name: 'Khan/KaTeX',
+      url: 'https://github.com/Khan/KaTeX',
+      description: 'Fast math typesetting for the web.',
+    },
+    {
+      name: 'facebook/react-devtools',
+      url: 'https://github.com/facebook/react-devtools',
+      description:
+        'An extension that allows inspection of React component hierarchy in the Chrome and Firefox Developer Tools.',
+    },
+    {
+      name: 'vim-awesome/vim-awesome',
+      url: 'https://github.com/vim-awesome/vim-awesome',
+      description: 'Awesome Vim plugins from across the universe',
+    },
+    {
+      name: 'facebook/draft-js',
+      url: 'https://github.com/facebook/draft-js',
+      description: 'A React framework for building text editors.',
+    },
+    {
+      name: 'es3ify',
+      url: 'https://github.com/sophiebits/es3ify',
+      description:
+        'Browserify transform to convert ES5 syntax to be ES3-compatible.',
+    },
+  ],
+  trueadm: [
+    {
+      name: 'facebook/react',
+      url: 'https://github.com/facebook/react',
+      description:
+        'A declarative, efficient, and flexible JavaScript library for building user interfaces.',
+    },
+    {
+      name: 'infernojs/inferno',
+      url: 'https://github.com/infernojs/inferno',
+      description:
+        'An extremely fast, React-like JavaScript library for building modern user interfaces',
+    },
+    {
+      name: 'facebook/prepack',
+      url: 'https://github.com/facebook/prepack',
+      description: 'A JavaScript bundle optimizer.',
+    },
+    {
+      name: 't7',
+      url: 'https://github.com/trueadm/t7',
+      description: 'Lightweight virtual DOM templating library',
+    },
+    {
+      name: 'infernojs/babel-plugin-inferno',
+      url: 'https://github.com/infernojs/babel-plugin-inferno',
+      description: null,
+    },
+  ],
+};

fixtures/unstable-async/suspense/src/api/index.js

@@ -0,0 +1,67 @@
+import {
+  coreContributorListJSON,
+  userProfileJSON,
+  userRepositoriesListJSON,
+} from './data';
+
+export function fetchCoreContributorListJSON() {
+  return makeFakeAPICall('/react/contributors', coreContributorListJSON);
+}
+
+export function fetchUserProfileJSON(id) {
+  return makeFakeAPICall(`/${id}/details`, userProfileJSON[id]);
+}
+
+export function fetchUserRepositoriesListJSON(id) {
+  return makeFakeAPICall(`/${id}/repositories`, userRepositoriesListJSON[id]);
+}
+
+let fakeRequestTime = 1000;
+let onProgress = () => true;
+
+export function setFakeRequestTime(val) {
+  fakeRequestTime = val;
+}
+
+export function setProgressHandler(handler) {
+  onProgress = handler;
+}
+
+export function setPauseNewRequests(value) {
+  shouldPauseNewRequests = value;
+}
+
+let shouldPauseNewRequests = false;
+let notifiers = {};
+let isPausedUrl = {};
+
+export function setPaused(url, isPaused) {
+  const wasPaused = isPausedUrl[url];
+  isPausedUrl[url] = isPaused;
+  if (isPaused !== wasPaused) {
+    notifiers[url]();
+  }
+}
+
+function makeFakeAPICall(url, result) {
+  let i = 1;
+  return new Promise(resolve => {
+    isPausedUrl[url] = shouldPauseNewRequests;
+    function notify() {
+      if (!isPausedUrl[url]) {
+        i++;
+      }
+      onProgress(url, i, isPausedUrl[url]);
+      if (isPausedUrl[url]) {
+        return;
+      }
+      if (i === 100) {
+        resolve(result);
+      } else {
+        setTimeout(notify, fakeRequestTime / 100);
+      }
+    }
+    notifiers[url] = notify;
+    notify();
+  });
+}

fixtures/unstable-async/suspense/src/cache.js

@@ -0,0 +1,7 @@
+import {createCache} from 'react-cache';
+
+export let cache;
+function initCache() {
+  cache = createCache(initCache);
+}
+initCache();

fixtures/unstable-async/suspense/src/components/App.js

@@ -0,0 +1,89 @@
+import React, {lazy, unstable_Suspense as Suspense, PureComponent} from 'react';
+import {unstable_scheduleCallback} from 'scheduler';
+import {
+  unstable_trace as trace,
+  unstable_wrap as wrap,
+} from 'scheduler/tracing';
+import Spinner from './Spinner';
+import ContributorListPage from './ContributorListPage';
+
+const UserPage = lazy(() => import('./UserPage'));
+
+export default class App extends PureComponent {
+  state = {
+    currentId: null,
+    showDetail: false,
+  };
+
+  componentDidUpdate(prevProps, prevState) {
+    if (
+      prevState.showDetail !== this.state.showDetail ||
+      (prevState.currentId !== this.state.currentId && this.state.showDetail)
+    ) {
+      window.scrollTo(0, 0);
+    }
+  }
+
+  handleUserClick = id => {
+    trace(`View ${id}`, performance.now(), () => {
+      trace(`View ${id} (high-pri)`, performance.now(), () =>
+        this.setState({
+          currentId: id,
+        })
+      );
+      unstable_scheduleCallback(
+        wrap(() =>
+          trace(`View ${id} (low-pri)`, performance.now(), () =>
+            this.setState({
+              showDetail: true,
+            })
+          )
+        )
+      );
+    });
+  };
+
+  handleBackClick = () =>
+    trace('View list', performance.now(), () =>
+      this.setState({
+        currentId: null,
+        showDetail: false,
+      })
+    );
+
+  render() {
+    const {currentId, showDetail} = this.state;
+    return showDetail
+      ? this.renderDetail(currentId)
+      : this.renderList(currentId);
+  }
+
+  renderDetail(id) {
+    return (
+      <div>
+        <button
+          onClick={this.handleBackClick}
+          style={{
+            display: 'block',
+            marginBottom: '1rem',
+          }}>
+          Return to list
+        </button>
+        <Suspense maxDuration={2000} fallback={<Spinner size="large" />}>
+          <UserPage id={id} />
+        </Suspense>
+      </div>
+    );
+  }
+
+  renderList(loadingId) {
+    return (
+      <Suspense maxDuration={1500} fallback={<Spinner size="large" />}>
+        <ContributorListPage
+          loadingId={loadingId}
+          onUserClick={this.handleUserClick}
+        />
+      </Suspense>
+    );
+  }
+}

fixtures/unstable-async/suspense/src/components/ContributorListPage.js

@@ -0,0 +1,62 @@
+import React, {Fragment} from 'react';
+import {createResource} from 'react-cache';
+import {cache} from '../cache';
+import Spinner from './Spinner';
+import {fetchCoreContributorListJSON} from '../api';
+
+const ContributorListResource = createResource(fetchCoreContributorListJSON);
+
+const ContributorListPage = ({loadingId, onUserClick}) => (
+  <Fragment>
+    <h1>React Core Team</h1>
+    <ul
+      style={{
+        display: 'grid',
+        gridGap: '0.5rem',
+        gridTemplateColumns: 'repeat(auto-fill, 20rem)',
+        padding: 0,
+        margin: 0,
+      }}>
+      {ContributorListResource.read(cache).map(user => (
+        <ContributorListItem
+          key={user.id}
+          onClick={() => onUserClick(user.id)}
+          isLoading={loadingId && user.id === loadingId}
+          user={user}
+        />
+      ))}
+    </ul>
+  </Fragment>
+);
+
+const ContributorListItem = ({isLoading, onClick, user}) => (
+  <li
+    onClick={onClick}
+    style={{
+      display: 'flex',
+      alignItems: 'center',
+      justifyContent: 'space-between',
+      padding: '1rem',
+      backgroundColor: 'var(--color-buttonBg)',
+      border: '1px solid var(--color-buttonBorder)',
+      borderRadius: '1rem',
+      opacity: isLoading === false ? 0.5 : 1,
+      cursor: isLoading ? 'default' : 'pointer',
+    }}
+    tabIndex="0">
+    <div>
+      <strong>{user.name}</strong>
+      <div style={{marginTop: '0.5rem'}}>{user.id}</div>
+    </div>
+    {isLoading ? (
+      <Spinner size="small" />
+    ) : (
+      <svg width="24" height="24" viewBox="0 0 24 24">
+        <path fill="none" d="M0 0h24v24H0z" />
+        <path d="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z" />
+      </svg>
+    )}
+  </li>
+);
+
+export default ContributorListPage;

fixtures/unstable-async/suspense/src/components/Spinner.css

@@ -0,0 +1,75 @@
+.Spinner {
+  animation: rotate 1.3s linear infinite;
+}
+
+.SpinnerContainer-large {
+  position: fixed;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+}
+
+@keyframes rotate {
+  0% { transform: rotate(0deg); }
+  100% { transform: rotate(270deg); }
+}
+
+.SmallSpinnerPath {
+  stroke-dasharray: 100;
+  stroke-dashoffset: 0;
+  transform-origin: center;
+  animation:
+    SmallDash 1.3s ease-in-out infinite;
+}
+
+@keyframes SmallDash {
+ 0% { stroke-dashoffset: 100; }
+ 50% {
+   stroke-dashoffset: 50;
+   transform:rotate(135deg);
+ }
+ 100% {
+   stroke-dashoffset: 100;
+   transform:rotate(450deg);
+ }
+}
+
+.MediumSpinnerPath {
+  stroke-dasharray: 150;
+  stroke-dashoffset: 0;
+  transform-origin: center;
+  animation:
+    MediumDash 1.3s ease-in-out infinite;
+}
+
+@keyframes MediumDash {
+ 0% { stroke-dashoffset: 150; }
+ 50% {
+   stroke-dashoffset: 50;
+   transform:rotate(135deg);
+ }
+ 100% {
+   stroke-dashoffset: 150;
+   transform:rotate(450deg);
+ }
+}
+
+.LargeSpinnerPath {
+  stroke-dasharray: 200;
+  stroke-dashoffset: 0;
+  transform-origin: center;
+  animation:
+    LargeDash 1.3s ease-in-out infinite;
+}
+
+@keyframes LargeDash {
+ 0% { stroke-dashoffset: 200; }
+ 50% {
+   stroke-dashoffset: 50;
+   transform:rotate(135deg);
+ }
+ 100% {
+   stroke-dashoffset: 200;
+   transform:rotate(450deg);
+ }
+}

fixtures/unstable-async/suspense/src/components/Spinner.js

@@ -0,0 +1,51 @@
+import React from 'react';
+import './Spinner.css';
+
+const SPINNER_SIZES = {
+  small: 30,
+  medium: 50,
+  large: 70,
+};
+
+const STROKE_WIDTHS = {
+  small: 4,
+  medium: 5,
+  large: 6,
+};
+
+const PATH_CLASS_NAMES = {
+  small: 'SmallSpinnerPath',
+  medium: 'MediumSpinnerPath',
+  large: 'LargeSpinnerPath',
+};
+
+// Heavily inspired by https://codepen.io/mrrocks/pen/EiplA
+export default function Spinner({size = 'small'}) {
+  const baseSize = SPINNER_SIZES[size];
+  const pathSize = baseSize / 2;
+  const strokeWidth = STROKE_WIDTHS[size];
+  const pathRadius = `${baseSize / 2 - strokeWidth}px`;
+  const className = PATH_CLASS_NAMES[size];
+  const containerClassName = `SpinnerContainer SpinnerContainer-${size}`;
+
+  return (
+    <div className={containerClassName}>
+      <svg
+        className={className}
+        width={baseSize}
+        height={baseSize}
+        viewBox={`0 0 ${baseSize} ${baseSize}`}>
+        <circle
+          className="SpinnerPath"
+          fill="none"
+          stroke="currentColor"
+          strokeWidth={strokeWidth}
+          strokeLinecap="round"
+          cx={pathSize}
+          cy={pathSize}
+          r={pathRadius}
+        />
+      </svg>
+    </div>
+  );
+}

fixtures/unstable-async/suspense/src/components/UserPage.js

@@ -0,0 +1,169 @@
+import React, {unstable_Suspense as Suspense} from 'react';
+import {createResource} from 'react-cache';
+import Spinner from './Spinner';
+import {cache} from '../cache';
+import {fetchUserProfileJSON, fetchUserRepositoriesListJSON} from '../api';
+
+export default function UserPage({id}) {
+  return (
+    <div
+      style={{
+        display: 'grid',
+        gridTemplateColumns: 'repeat(auto-fill, 20rem)',
+        gridGap: '1rem',
+        alignItems: 'start',
+      }}>
+      <UserDetails id={id} />
+      <Suspense maxDuration={1000} fallback={<Spinner size="medium" />}>
+        <Repositories id={id} />
+      </Suspense>
+    </div>
+  );
+}
+
+const UserDetailsResource = createResource(fetchUserProfileJSON);
+
+function UserDetails({id}) {
+  const user = UserDetailsResource.read(cache, id);
+  return (
+    <div
+      style={{
+        display: 'grid',
+        gridGap: '0.5rem',
+        width: '20rem',
+        padding: '1rem',
+        backgroundColor: 'var(--color-buttonBg)',
+        border: '1px solid var(--color-buttonBorder)',
+        borderRadius: '1rem',
+      }}>
+      <UserPicture source={user.image} />
+      <div
+        style={{
+          fontSize: '1.5rem',
+          fontWeight: 'bold',
+          color: 'var(--color-pageTextDark)',
+        }}>
+        {user.name}
+      </div>
+      <div style={{fontSize: '1.25rem'}}>{user.id}</div>
+      {user.tagline !== null && <div>{user.tagline}</div>}
+      <hr
+        style={{
+          width: '100%',
+          height: '1px',
+          border: 'none',
+          backgroundColor: '#ddd',
+        }}
+      />
+      {user.location && <Location location={user.location} />}
+      {user.email && <Email email={user.email} />}
+    </div>
+  );
+}
+
+const Location = ({location}) => (
+  <div
+    style={{
+      display: 'flex',
+      alignItems: 'center',
+    }}>
+    <svg
+      viewBox="0 0 24 24"
+      style={{
+        width: '24px',
+        height: '24px',
+        marginRight: '0.5rem',
+        fill: 'currentColor',
+      }}>
+      <path d="M12 2C8.13 2 5 5.13 5 9c0 5.25 7 13 7 13s7-7.75 7-13c0-3.87-3.13-7-7-7zm0 9.5c-1.38 0-2.5-1.12-2.5-2.5s1.12-2.5 2.5-2.5 2.5 1.12 2.5 2.5-1.12 2.5-2.5 2.5z" />
+      <path d="M0 0h24v24H0z" fill="none" />
+    </svg>
+    {location}
+  </div>
+);
+
+const Email = ({email}) => (
+  <div
+    style={{
+      display: 'flex',
+      alignItems: 'center',
+    }}>
+    <svg
+      viewBox="0 0 24 24"
+      style={{
+        width: '24px',
+        height: '24px',
+        marginRight: '0.5rem',
+        fill: 'currentColor',
+      }}>
+      <path d="M20 4H4c-1.1 0-1.99.9-1.99 2L2 18c0 1.1.9 2 2 2h16c1.1 0 2-.9 2-2V6c0-1.1-.9-2-2-2zm0 4l-8 5-8-5V6l8 5 8-5v2z" />
+      <path d="M0 0h24v24H0z" fill="none" />
+    </svg>
+    <a href={`mailto:${email}`}>{email}</a>
+  </div>
+);
+
+const ImageResource = createResource(
+  src =>
+    new Promise(resolve => {
+      const img = new Image();
+      img.onload = () => resolve(src);
+      img.src = src;
+    })
+);
+
+function Img({src, alt, ...rest}) {
+  return <img src={ImageResource.read(cache, src)} alt={alt} {...rest} />;
+}
+
+function UserPicture({source}) {
+  return (
+    <Suspense maxDuration={1500} fallback={<img src={source} alt="poster" />}>
+      <Img
+        src={source}
+        alt="profile picture"
+        style={{
+          width: '100%',
+          height: 'auto',
+          borderRadius: '0.5rem',
+        }}
+      />
+    </Suspense>
+  );
+}
+
+const UserRepositoriesResource = createResource(fetchUserRepositoriesListJSON);
+
+function Repositories({id}) {
+  const repos = UserRepositoriesResource.read(cache, id);
+  return (
+    <ul
+      style={{
+        display: 'grid',
+        gridGap: '1rem',
+        padding: 0,
+        margin: 0,
+      }}>
+      {repos.map(repo => <Repository key={repo.name} {...repo} />)}
+    </ul>
+  );
+}
+
+function Repository({description, name, url}) {
+  return (
+    <li
+      style={{
+        display: 'grid',
+        gridGap: '0.5rem',
+        padding: '1rem',
+        backgroundColor: 'var(--color-buttonBg)',
+        border: '1px solid var(--color-buttonBorder)',
+        borderRadius: '1rem',
+      }}>
+      <strong>
+        <a href={url}>{name}</a>
+      </strong>
+      <div>{description}</div>
+    </li>
+  );
+}

fixtures/unstable-async/suspense/src/index.css

@@ -0,0 +1,90 @@
+* { box-sizing: border-box; }
+
+:root {
+  --color-debuggerBg: #f7f7f7;
+  --color-debuggerText: #333;
+  --color-debuggerBorder: #e7e7e7;
+
+  --color-panelBg: #f7f7f7;
+  --color-panelText: #333;
+
+  --color-pageTextDark: #000;
+  --color-pageText: #333;
+  --color-pageBg: #fff;
+
+  --color-buttonBg: #f7f7f7;
+  --color-buttonBorder: #e7e7e7;
+
+  --pt: 8px;
+}
+
+body {
+  margin: 0;
+  padding: calc(var(--pt)*4);
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
+  color: var(--color-pageText);
+  background-color: var(--color-pageBg);
+}
+
+/* -------------------------------- */
+/* Debugger */
+/* -------------------------------- */
+
+#debugger {
+  position: absolute;
+  top: 0; left: 0; right: 0; bottom: 0;
+  /* width: 100vw; */
+  /* height: 100vh; */
+  pointer-events: none;
+}
+
+.🎛 {
+  position: fixed;
+  max-width: calc(var(--pt)*28);
+  border-radius: var(--pt);
+  padding: calc(var(--pt)*2);
+  background-color: var(--color-debuggerBg);
+  border: 1px solid var(--color-debuggerBorder);
+  border-radius: 0.5rem;
+  color: var(--color-debuggerText);
+  pointer-events: all;
+}
+
+.🕹 {
+  background-color: var(--color-buttonBg);
+  border: 1px solid var(--color-buttonBorder);
+  border-radius: var(--pt);
+  padding: 0;
+  width: calc(var(--pt)*5);
+  height: calc(var(--pt)*5);
+  font-size: calc(var(--pt)*3);
+  line-height: 1;
+  font-weight: bold;
+  cursor: pointer;
+  user-select: none;
+}
+
+.🕹.👶 {
+  width: calc(var(--pt)*3);
+  height: calc(var(--pt)*3);
+  font-size: calc(var(--pt)*2);
+}
+
+.🕹.🐘 {
+  width: auto;
+  height: calc(var(--pt)*7);
+  padding: var(--pt) calc(var(--pt)*2);
+}
+
+.🕹:hover {
+  background-color: white;
+  top: -4px;
+  left: -4px;
+  box-shadow: 4px 4px 0 var(--color-buttonBorder);
+}
+
+.🕹:active {
+  box-shadow: none;
+  top: 0;
+  left: 0;
+}

fixtures/unstable-async/suspense/src/index.js

@@ -0,0 +1,275 @@
+import React, {Fragment, PureComponent} from 'react';
+import {unstable_createRoot, render} from 'react-dom';
+import {unstable_trace as trace} from 'scheduler/tracing';
+import {cache} from './cache';
+import {
+  setFakeRequestTime,
+  setPaused,
+  setPauseNewRequests,
+  setProgressHandler,
+} from './api';
+import App from './components/App';
+import Draggable from 'react-draggable';
+import './index.css';
+
+let handleReset;
+
+class Shell extends PureComponent {
+  state = {
+    iteration: 0,
+  };
+
+  componentDidMount() {
+    handleReset = this.handleReset;
+  }
+
+  handleReset = () =>
+    this.setState(prevState => ({
+      iteration: prevState.iteration + 1,
+    }));
+
+  render() {
+    return <App key={this.state.iteration} />;
+  }
+}
+
+class Debugger extends PureComponent {
+  state = {
+    iteration: 0,
+    strategy: 'async',
+    requestTime: 1,
+    showDebugger: false,
+    pauseNewRequests: false,
+    waitTime: 0,
+    requests: {},
+  };
+
+  componentDidMount() {
+    setFakeRequestTime(this.state.requestTime * 1000);
+    setProgressHandler(this.handleProgress);
+    window.addEventListener('keydown', e => {
+      if (e.key.toLowerCase() === '/') {
+        this.setState(state => ({
+          showDebugger: !state.showDebugger,
+        }));
+      } else if (e.key.toLowerCase() === 'p') {
+        this.togglePauseRequests();
+      }
+    });
+  }
+
+  componentDidUpdate(prevProps, prevState) {
+    if (prevState.requestTime !== this.state.requestTime) {
+      setFakeRequestTime(this.state.requestTime * 1000);
+    }
+  }
+
+  handleReset = () => {
+    trace('Clear cache', () => {
+      cache.invalidate();
+      this.setState(state => ({
+        requests: {},
+      }));
+      handleReset();
+    });
+  };
+
+  handleProgress = (url, progress, isPaused) => {
+    this.setState(state => ({
+      requests: {
+        ...state.requests,
+        [url]: {
+          url,
+          progress,
+          isPaused,
+        },
+      },
+    }));
+  };
+
+  togglePauseRequests = () => {
+    this.setState(
+      prevState => {
+        return {pauseNewRequests: !prevState.pauseNewRequests};
+      },
+      () => {
+        setPauseNewRequests(this.state.pauseNewRequests);
+      }
+    );
+  };
+
+  render() {
+    if (!this.state.showDebugger) {
+      return null;
+    }
+    return (
+      <Draggable cancel="input">
+        <div
+          className="🎛"
+          style={{
+            bottom: 20,
+            right: 20,
+          }}>
+          <div>
+            Latency: {this.state.requestTime} second{this.state.requestTime !==
+            1
+              ? 's'
+              : ''}{' '}
+            <input
+              type="range"
+              min="0"
+              max="3"
+              step="0.5"
+              style={{width: '100%'}}
+              value={this.state.requestTime}
+              onChange={e => {
+                e.stopPropagation();
+                this.setState({requestTime: parseFloat(e.target.value)});
+              }}
+            />
+          </div>
+          <label>
+            <input
+              type="checkbox"
+              checked={this.state.pauseNewRequests}
+              onChange={this.togglePauseRequests}
+            />
+            Pause new requests
+          </label>
+          <br />
+          <br />
+          {Object.values(this.state.requests).filter(x => x.progress !== 100)
+            .length > 0 ? (
+            <Fragment>
+              <div style={{marginBottom: 10}}>
+                <b>Loading</b>
+              </div>
+            </Fragment>
+          ) : (
+            <Fragment>
+              <div style={{marginBottom: 10}}>
+                <b>Loading</b>
+              </div>
+              <small style={{height: 20, display: 'block'}}>(None)</small>
+            </Fragment>
+          )}
+          {Object.keys(this.state.requests)
+            .reverse()
+            .map(url => {
+              const {progress, isPaused} = this.state.requests[url];
+              if (progress === 100) {
+                return null;
+              }
+              return (
+                <div
+                  key={url}
+                  style={{
+                    height: 20,
+                    width: '100%',
+                    position: 'relative',
+                    cursor: 'pointer',
+                    title: isPaused ? 'Resume' : 'Pause',
+                  }}
+                  onClick={e => {
+                    setPaused(url, !isPaused);
+                  }}>
+                  <div
+                    style={{
+                      height: '100%',
+                      width: progress + '%',
+                      position: 'absolute',
+                      left: 0,
+                      top: 0,
+                      backgroundColor: isPaused ? '#fbfb0e' : '#61dafb',
+                      zIndex: -1,
+                      opacity: 0.8,
+                    }}
+                  />
+                  <div
+                    style={{
+                      fontFamily: 'monospace',
+                      fontWeight: 'bold',
+                      color: 'black',
+                    }}>
+                    {url}
+                  </div>
+                </div>
+              );
+            })}
+          {Object.values(this.state.requests).filter(x => x.progress === 100)
+            .length > 0 ? (
+            <Fragment>
+              <br />
+              <div style={{marginBottom: 10}}>
+                <b>Cached</b>{' '}
+                <button
+                  style={{
+                    height: 16,
+                    outline: 'none',
+                    border: 'none',
+                    background: 'none',
+                    cursor: 'pointer',
+                  }}
+                  onClick={this.handleReset}>
+                  🗑
+                </button>
+              </div>
+            </Fragment>
+          ) : (
+            <Fragment>
+              <br />
+              <div style={{marginBottom: 10}}>
+                <b>Cached</b>
+              </div>
+              <small style={{height: 20, display: 'block'}}>(None)</small>
+            </Fragment>
+          )}
+          {Object.keys(this.state.requests)
+            .reverse()
+            .map(url => {
+              const {progress} = this.state.requests[url];
+              if (progress !== 100) {
+                return null;
+              }
+
+              return (
+                <div
+                  key={url}
+                  style={{
+                    height: 20,
+                    width: '100%',
+                    position: 'relative',
+                  }}>
+                  <div
+                    style={{
+                      height: '100%',
+                      width: progress + '%',
+                      position: 'absolute',
+                      left: 0,
+                      top: 0,
+                      backgroundColor:
+                        progress !== 100 ? '#61dafb' : 'lightgreen',
+                      zIndex: -1,
+                      opacity: 0.8,
+                    }}
+                  />
+                  <div
+                    style={{
+                      fontFamily: 'monospace',
+                      fontWeight: 'bold',
+                      color: 'black',
+                    }}>
+                    {url}
+                  </div>
+                </div>
+              );
+            })}
+        </div>
+      </Draggable>
+    );
+  }
+}
+
+unstable_createRoot(document.getElementById('root')).render(<Shell />);
+
+render(<Debugger />, document.getElementById('debugger'));

fixtures/unstable-async/time-slicing/README.md

@@ -18,7 +18,7 @@ There are also known bugs and inefficiencies in master so **don't use this fixtu
 # 1: Build react from source
 cd /path/to/react
 yarn
-yarn build react-dom/index,react/index,react-cache,scheduler --type=NODE
+yarn build dom-client,core,react-cache,scheduler --type=NODE
 
 # 2: Install fixture dependencies
 cd fixtures/unstable-async/time-slicing/

fixtures/unstable-async/time-slicing/src/index.js

@@ -1,6 +1,6 @@
 import React, {PureComponent} from 'react';
-import {flushSync, unstable_createRoot} from 'react-dom';
-import Scheduler from 'scheduler';
+import {flushSync, render} from 'react-dom';
+import {unstable_scheduleCallback} from 'scheduler';
 import _ from 'lodash';
 import Charts from './Charts';
 import Clock from './Clock';
@@ -67,7 +67,7 @@ class App extends PureComponent {
     }
     this._ignoreClick = true;
 
-    Scheduler.unstable_next(() => {
+    unstable_scheduleCallback(() => {
       this.setState({showDemo: true}, () => {
         this._ignoreClick = false;
       });
@@ -124,7 +124,7 @@ class App extends PureComponent {
         <div className="rendering">
           {this.renderOption('sync', 'Synchronous')}
           {this.renderOption('debounced', 'Debounced')}
-          {this.renderOption('async', 'Concurrent')}
+          {this.renderOption('async', 'Asynchronous')}
         </div>
         <input
           className={'input ' + this.state.strategy}
@@ -146,5 +146,9 @@ class App extends PureComponent {
 }
 
 const container = document.getElementById('root');
-const root = ReactDOM.unstable_createRoot(container);
-root.render(<App />, container);
+render(
+  <React.unstable_ConcurrentMode>
+    <App />
+  </React.unstable_ConcurrentMode>,
+  container
+);

package.json

@@ -1,40 +1,40 @@
 {
   "private": true,
+  "version": "16.6.0-alpha.8af6728",
   "workspaces": [
     "packages/*"
   ],
   "devDependencies": {
-    "@babel/cli": "^7.0.0",
-    "@babel/code-frame": "^7.0.0",
-    "@babel/core": "^7.0.0",
-    "@babel/helper-module-imports": "^7.0.0",
-    "@babel/plugin-external-helpers": "^7.0.0",
-    "@babel/plugin-proposal-class-properties": "^7.0.0",
-    "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
-    "@babel/plugin-syntax-dynamic-import": "^7.0.0",
-    "@babel/plugin-transform-arrow-functions": "^7.0.0",
-    "@babel/plugin-transform-async-to-generator": "^7.0.0",
-    "@babel/plugin-transform-block-scoped-functions": "^7.0.0",
-    "@babel/plugin-transform-block-scoping": "^7.0.0",
-    "@babel/plugin-transform-classes": "^7.0.0",
-    "@babel/plugin-transform-computed-properties": "^7.0.0",
-    "@babel/plugin-transform-destructuring": "^7.0.0",
-    "@babel/plugin-transform-for-of": "^7.0.0",
-    "@babel/plugin-transform-literals": "^7.0.0",
-    "@babel/plugin-transform-modules-commonjs": "^7.0.0",
-    "@babel/plugin-transform-object-super": "^7.0.0",
-    "@babel/plugin-transform-parameters": "^7.0.0",
-    "@babel/plugin-transform-react-jsx-source": "^7.0.0",
-    "@babel/plugin-transform-shorthand-properties": "^7.0.0",
-    "@babel/plugin-transform-spread": "^7.0.0",
-    "@babel/plugin-transform-template-literals": "^7.0.0",
-    "@babel/preset-flow": "^7.0.0",
-    "@babel/preset-react": "^7.0.0",
-    "@babel/traverse": "^7.0.0",
-    "@mattiasbuelens/web-streams-polyfill": "0.1.0",
     "art": "^0.10.1",
+    "babel-cli": "^6.6.5",
+    "babel-code-frame": "^6.26.0",
+    "babel-core": "^6.0.0",
     "babel-eslint": "^10.0.0",
+    "babel-jest": "^23.0.1",
+    "babel-plugin-check-es2015-constants": "^6.5.0",
+    "babel-plugin-external-helpers": "^6.22.0",
     "babel-plugin-syntax-trailing-function-commas": "^6.5.0",
+    "babel-plugin-transform-async-to-generator": "^6.22.0",
+    "babel-plugin-transform-class-properties": "^6.11.5",
+    "babel-plugin-transform-es2015-arrow-functions": "^6.5.2",
+    "babel-plugin-transform-es2015-block-scoped-functions": "^6.5.0",
+    "babel-plugin-transform-es2015-block-scoping": "^6.23.0",
+    "babel-plugin-transform-es2015-classes": "^6.5.2",
+    "babel-plugin-transform-es2015-computed-properties": "^6.5.2",
+    "babel-plugin-transform-es2015-destructuring": "^6.5.0",
+    "babel-plugin-transform-es2015-for-of": "^6.5.2",
+    "babel-plugin-transform-es2015-literals": "^6.5.0",
+    "babel-plugin-transform-es2015-modules-commonjs": "^6.5.2",
+    "babel-plugin-transform-es2015-object-super": "^6.5.0",
+    "babel-plugin-transform-es2015-parameters": "^6.5.0",
+    "babel-plugin-transform-es2015-shorthand-properties": "^6.5.0",
+    "babel-plugin-transform-es2015-spread": "^6.5.2",
+    "babel-plugin-transform-es2015-template-literals": "^6.5.2",
+    "babel-plugin-transform-object-rest-spread": "^6.6.5",
+    "babel-plugin-transform-react-jsx-source": "^6.8.0",
+    "babel-plugin-transform-regenerator": "^6.26.0",
+    "babel-preset-react": "^6.5.0",
+    "babel-traverse": "^6.9.0",
     "babylon": "6.18.0",
     "chalk": "^1.1.3",
     "cli-table": "^0.3.1",
@@ -44,26 +44,24 @@
     "create-react-class": "^15.6.3",
     "cross-env": "^5.1.1",
     "danger": "^3.0.4",
-    "error-stack-parser": "^2.0.2",
-    "eslint": "^6.1.0",
+    "eslint": "^4.1.0",
     "eslint-config-fbjs": "^1.1.1",
+    "eslint-plugin-babel": "^3.3.0",
     "eslint-plugin-flowtype": "^2.25.0",
-    "eslint-plugin-jest": "^22.15.0",
+    "eslint-plugin-jest": "^21.6.1",
     "eslint-plugin-no-for-of-loops": "^1.0.0",
-    "eslint-plugin-babel": "^5.3.0",
     "eslint-plugin-react": "^6.7.1",
-    "eslint-plugin-react-internal": "link:./scripts/eslint-rules",
+    "eslint-plugin-react-internal": "link:./scripts/eslint-rules/",
     "fbjs-scripts": "^0.8.3",
     "filesize": "^3.5.6",
     "flow-bin": "^0.72.0",
     "glob": "^6.0.4",
     "glob-stream": "^6.1.0",
-    "google-closure-compiler": "20190301.0.0",
+    "google-closure-compiler": "20180506.0.0",
     "gzip-size": "^3.0.0",
     "jasmine-check": "^1.0.0-rc.0",
     "jest": "^23.1.0",
     "jest-diff": "^23.0.1",
-    "jest-snapshot-serializer-raw": "^1.1.0",
     "minimatch": "^3.0.4",
     "minimist": "^1.2.0",
     "mkdirp": "^0.5.1",
@@ -75,7 +73,7 @@
     "react-lifecycles-compat": "^3.0.2",
     "rimraf": "^2.6.1",
     "rollup": "^0.52.1",
-    "rollup-plugin-babel": "^4.0.1",
+    "rollup-plugin-babel": "^3.0.1",
     "rollup-plugin-commonjs": "^8.2.6",
     "rollup-plugin-node-resolve": "^2.1.1",
     "rollup-plugin-prettier": "^0.3.0",
@@ -88,27 +86,25 @@
     "typescript": "~1.8.10"
   },
   "devEngines": {
-    "node": "8.x || 9.x || 10.x || 11.x || 12.x"
+    "node": "8.x || 9.x || 10.x"
   },
   "jest": {
     "testRegex": "/scripts/jest/dont-run-jest-directly\\.js$"
   },
   "scripts": {
-    "build": "node ./scripts/rollup/build.js",
+    "build": "npm run version-check && node ./scripts/rollup/build.js",
     "linc": "node ./scripts/tasks/linc.js",
     "lint": "node ./scripts/tasks/eslint.js",
     "lint-build": "node ./scripts/rollup/validate/index.js",
-    "extract-errors": "yarn build --type=dev --extract-errors",
     "postinstall": "node node_modules/fbjs-scripts/node/check-dev-engines.js package.json && node ./scripts/flow/createFlowConfigs.js",
     "debug-test": "cross-env NODE_ENV=development node --inspect-brk node_modules/.bin/jest --config ./scripts/jest/config.source.js --runInBand",
     "test": "cross-env NODE_ENV=development jest --config ./scripts/jest/config.source.js",
-    "test-persistent": "cross-env NODE_ENV=development jest --config ./scripts/jest/config.source-persistent.js",
-    "debug-test-persistent": "cross-env NODE_ENV=development node --inspect-brk node_modules/.bin/jest --config ./scripts/jest/config.source-persistent.js --runInBand",
+    "test-fire": "cross-env NODE_ENV=development jest --config ./scripts/jest/config.source-fire.js",
     "test-prod": "cross-env NODE_ENV=production jest --config ./scripts/jest/config.source.js",
+    "test-fire-prod": "cross-env NODE_ENV=production jest --config ./scripts/jest/config.source-fire.js",
     "test-prod-build": "yarn test-build-prod",
     "test-build": "cross-env NODE_ENV=development jest --config ./scripts/jest/config.build.js",
     "test-build-prod": "cross-env NODE_ENV=production jest --config ./scripts/jest/config.build.js",
-    "test-dom-fixture": "cd fixtures/dom && yarn && yarn prestart && yarn test",
     "flow": "node ./scripts/tasks/flow.js",
     "flow-ci": "node ./scripts/tasks/flow-ci.js",
     "prettier": "node ./scripts/prettier/index.js write-changed",

packages/create-subscription/README.md

@@ -36,7 +36,7 @@ This abstraction can handle a variety of subscription types, including:
 yarn add create-subscription
 
 # NPM
-npm install create-subscription
+npm install create-subscription --save
 ```
 
 # Usage
@@ -81,7 +81,7 @@ import React from "react";
 import { createSubscription } from "create-subscription";
 
 // Start with a simple component.
-// In this case, it's a function component, but it could have been a class.
+// In this case, it's a functional component, but it could have been a class.
 function FollowerComponent({ followersCount }) {
   return <div>You have {followersCount} followers!</div>;
 }
@@ -164,7 +164,7 @@ function LoadingComponent({ loadingStatus }) {
   }
 }
 
-// Wrap the function component with a subscriber HOC.
+// Wrap the functional component with a subscriber HOC.
 // This HOC will manage subscriptions and pass values to the decorated component.
 // It will add and remove subscriptions in an async-safe way when props change.
 const PromiseSubscription = createSubscription({

packages/create-subscription/package.json

@@ -1,21 +1,16 @@
 {
   "name": "create-subscription",
   "description": "utility for subscribing to external data sources inside React components",
-  "version": "16.9.0",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/facebook/react.git",
-    "directory": "packages/create-subscription"
-  },
+  "version": "16.6.0-alpha.8af6728",
+  "repository": "facebook/react",
   "files": [
     "LICENSE",
     "README.md",
-    "build-info.json",
     "index.js",
     "cjs/"
   ],
   "peerDependencies": {
-    "react": "^16.3.0"
+    "react": "^16.3.0 || 16.6.0-alpha.8af6728"
   },
   "devDependencies": {
     "rxjs": "^5.5.6"

packages/create-subscription/src/__tests__/createSubscription-test.internal.js

@@ -14,7 +14,6 @@ let BehaviorSubject;
 let ReactFeatureFlags;
 let React;
 let ReactNoop;
-let Scheduler;
 let ReplaySubject;
 
 describe('createSubscription', () => {
@@ -25,7 +24,6 @@ describe('createSubscription', () => {
     ReactFeatureFlags.debugRenderPhaseSideEffectsForStrictMode = false;
     React = require('react');
     ReactNoop = require('react-noop-renderer');
-    Scheduler = require('scheduler');
 
     BehaviorSubject = require('rxjs/BehaviorSubject').BehaviorSubject;
     ReplaySubject = require('rxjs/ReplaySubject').ReplaySubject;
@@ -60,23 +58,23 @@ describe('createSubscription', () => {
     ReactNoop.render(
       <Subscription source={observable}>
         {(value = 'default') => {
-          Scheduler.unstable_yieldValue(value);
+          ReactNoop.yield(value);
           return null;
         }}
       </Subscription>,
     );
 
     // Updates while subscribed should re-render the child component
-    expect(Scheduler).toFlushAndYield(['default']);
+    expect(ReactNoop.flush()).toEqual(['default']);
     observable.next(123);
-    expect(Scheduler).toFlushAndYield([123]);
+    expect(ReactNoop.flush()).toEqual([123]);
     observable.next('abc');
-    expect(Scheduler).toFlushAndYield(['abc']);
+    expect(ReactNoop.flush()).toEqual(['abc']);
 
     // Unmounting the subscriber should remove listeners
     ReactNoop.render(<div />);
     observable.next(456);
-    expect(Scheduler).toFlushAndYield([]);
+    expect(ReactNoop.flush()).toEqual([]);
   });
 
   it('should support observable types like RxJS ReplaySubject', () => {
@@ -97,20 +95,20 @@ describe('createSubscription', () => {
     });
 
     function render(value = 'default') {
-      Scheduler.unstable_yieldValue(value);
+      ReactNoop.yield(value);
       return null;
     }
 
     const observable = createReplaySubject('initial');
 
     ReactNoop.render(<Subscription source={observable}>{render}</Subscription>);
-    expect(Scheduler).toFlushAndYield(['initial']);
+    expect(ReactNoop.flush()).toEqual(['initial']);
     observable.next('updated');
-    expect(Scheduler).toFlushAndYield(['updated']);
+    expect(ReactNoop.flush()).toEqual(['updated']);
 
     // Unsetting the subscriber prop should reset subscribed values
     ReactNoop.render(<Subscription>{render}</Subscription>);
-    expect(Scheduler).toFlushAndYield(['default']);
+    expect(ReactNoop.flush()).toEqual(['default']);
   });
 
   describe('Promises', () => {
@@ -126,9 +124,9 @@ describe('createSubscription', () => {
 
       function render(hasLoaded) {
         if (hasLoaded === undefined) {
-          Scheduler.unstable_yieldValue('loading');
+          ReactNoop.yield('loading');
         } else {
-          Scheduler.unstable_yieldValue(hasLoaded ? 'finished' : 'failed');
+          ReactNoop.yield(hasLoaded ? 'finished' : 'failed');
         }
         return null;
       }
@@ -143,19 +141,19 @@ describe('createSubscription', () => {
 
       // Test a promise that resolves after render
       ReactNoop.render(<Subscription source={promiseA}>{render}</Subscription>);
-      expect(Scheduler).toFlushAndYield(['loading']);
+      expect(ReactNoop.flush()).toEqual(['loading']);
       resolveA(true);
       await promiseA;
-      expect(Scheduler).toFlushAndYield(['finished']);
+      expect(ReactNoop.flush()).toEqual(['finished']);
 
       // Test a promise that resolves before render
       // Note that this will require an extra render anyway,
-      // Because there is no way to synchronously get a Promise's value
+      // Because there is no way to syncrhonously get a Promise's value
       rejectB(false);
       ReactNoop.render(<Subscription source={promiseB}>{render}</Subscription>);
-      expect(Scheduler).toFlushAndYield(['loading']);
+      expect(ReactNoop.flush()).toEqual(['loading']);
       await promiseB.catch(() => true);
-      expect(Scheduler).toFlushAndYield(['failed']);
+      expect(ReactNoop.flush()).toEqual(['failed']);
     });
 
     it('should still work if unsubscription is managed incorrectly', async () => {
@@ -169,7 +167,7 @@ describe('createSubscription', () => {
       });
 
       function render(value = 'default') {
-        Scheduler.unstable_yieldValue(value);
+        ReactNoop.yield(value);
         return null;
       }
 
@@ -179,9 +177,9 @@ describe('createSubscription', () => {
 
       // Subscribe first to Promise A then Promise B
       ReactNoop.render(<Subscription source={promiseA}>{render}</Subscription>);
-      expect(Scheduler).toFlushAndYield(['default']);
+      expect(ReactNoop.flush()).toEqual(['default']);
       ReactNoop.render(<Subscription source={promiseB}>{render}</Subscription>);
-      expect(Scheduler).toFlushAndYield(['default']);
+      expect(ReactNoop.flush()).toEqual(['default']);
 
       // Resolve both Promises
       resolveB(123);
@@ -189,7 +187,7 @@ describe('createSubscription', () => {
       await Promise.all([promiseA, promiseB]);
 
       // Ensure that only Promise B causes an update
-      expect(Scheduler).toFlushAndYield([123]);
+      expect(ReactNoop.flush()).toEqual([123]);
     });
 
     it('should not call setState for a Promise that resolves after unmount', async () => {
@@ -203,7 +201,7 @@ describe('createSubscription', () => {
       });
 
       function render(hasLoaded) {
-        Scheduler.unstable_yieldValue('rendered');
+        ReactNoop.yield('rendered');
         return null;
       }
 
@@ -213,11 +211,11 @@ describe('createSubscription', () => {
       });
 
       ReactNoop.render(<Subscription source={promise}>{render}</Subscription>);
-      expect(Scheduler).toFlushAndYield(['rendered']);
+      expect(ReactNoop.flush()).toEqual(['rendered']);
 
       // Unmount
       ReactNoop.render(null);
-      expect(Scheduler).toFlushWithoutYielding();
+      ReactNoop.flush();
 
       // Resolve Promise should not trigger a setState warning
       resolvePromise(true);
@@ -235,7 +233,7 @@ describe('createSubscription', () => {
     });
 
     function render(value = 'default') {
-      Scheduler.unstable_yieldValue(value);
+      ReactNoop.yield(value);
       return null;
     }
 
@@ -247,28 +245,28 @@ describe('createSubscription', () => {
     );
 
     // Updates while subscribed should re-render the child component
-    expect(Scheduler).toFlushAndYield(['a-0']);
+    expect(ReactNoop.flush()).toEqual(['a-0']);
 
     // Unsetting the subscriber prop should reset subscribed values
     ReactNoop.render(
       <Subscription source={observableB}>{render}</Subscription>,
     );
-    expect(Scheduler).toFlushAndYield(['b-0']);
+    expect(ReactNoop.flush()).toEqual(['b-0']);
 
     // Updates to the old subscribable should not re-render the child component
     observableA.next('a-1');
-    expect(Scheduler).toFlushAndYield([]);
+    expect(ReactNoop.flush()).toEqual([]);
 
     // Updates to the bew subscribable should re-render the child component
     observableB.next('b-1');
-    expect(Scheduler).toFlushAndYield(['b-1']);
+    expect(ReactNoop.flush()).toEqual(['b-1']);
   });
 
   it('should ignore values emitted by a new subscribable until the commit phase', () => {
     const log = [];
 
     function Child({value}) {
-      Scheduler.unstable_yieldValue('Child: ' + value);
+      ReactNoop.yield('Child: ' + value);
       return null;
     }
 
@@ -305,7 +303,7 @@ describe('createSubscription', () => {
         return (
           <Subscription source={this.state.observed}>
             {(value = 'default') => {
-              Scheduler.unstable_yieldValue('Subscriber: ' + value);
+              ReactNoop.yield('Subscriber: ' + value);
               return <Child value={value} />;
             }}
           </Subscription>
@@ -317,12 +315,12 @@ describe('createSubscription', () => {
     const observableB = createBehaviorSubject('b-0');
 
     ReactNoop.render(<Parent observed={observableA} />);
-    expect(Scheduler).toFlushAndYield(['Subscriber: a-0', 'Child: a-0']);
+    expect(ReactNoop.flush()).toEqual(['Subscriber: a-0', 'Child: a-0']);
     expect(log).toEqual(['Parent.componentDidMount']);
 
     // Start React update, but don't finish
     ReactNoop.render(<Parent observed={observableB} />);
-    expect(Scheduler).toFlushAndYieldThrough(['Subscriber: b-0']);
+    ReactNoop.flushThrough(['Subscriber: b-0']);
     expect(log).toEqual(['Parent.componentDidMount']);
 
     // Emit some updates from the uncommitted subscribable
@@ -337,7 +335,7 @@ describe('createSubscription', () => {
     // We expect the last emitted update to be rendered (because of the commit phase value check)
     // But the intermediate ones should be ignored,
     // And the final rendered output should be the higher-priority observable.
-    expect(Scheduler).toFlushAndYield([
+    expect(ReactNoop.flush()).toEqual([
       'Child: b-0',
       'Subscriber: b-3',
       'Child: b-3',
@@ -355,7 +353,7 @@ describe('createSubscription', () => {
     const log = [];
 
     function Child({value}) {
-      Scheduler.unstable_yieldValue('Child: ' + value);
+      ReactNoop.yield('Child: ' + value);
       return null;
     }
 
@@ -392,7 +390,7 @@ describe('createSubscription', () => {
         return (
           <Subscription source={this.state.observed}>
             {(value = 'default') => {
-              Scheduler.unstable_yieldValue('Subscriber: ' + value);
+              ReactNoop.yield('Subscriber: ' + value);
               return <Child value={value} />;
             }}
           </Subscription>
@@ -404,12 +402,12 @@ describe('createSubscription', () => {
     const observableB = createBehaviorSubject('b-0');
 
     ReactNoop.render(<Parent observed={observableA} />);
-    expect(Scheduler).toFlushAndYield(['Subscriber: a-0', 'Child: a-0']);
+    expect(ReactNoop.flush()).toEqual(['Subscriber: a-0', 'Child: a-0']);
     expect(log).toEqual(['Parent.componentDidMount']);
 
     // Start React update, but don't finish
     ReactNoop.render(<Parent observed={observableB} />);
-    expect(Scheduler).toFlushAndYieldThrough(['Subscriber: b-0']);
+    ReactNoop.flushThrough(['Subscriber: b-0']);
     expect(log).toEqual(['Parent.componentDidMount']);
 
     // Emit some updates from the old subscribable
@@ -422,7 +420,7 @@ describe('createSubscription', () => {
     // Flush everything and ensure that the correct subscribable is used
     // We expect the new subscribable to finish rendering,
     // But then the updated values from the old subscribable should be used.
-    expect(Scheduler).toFlushAndYield([
+    expect(ReactNoop.flush()).toEqual([
       'Child: b-0',
       'Subscriber: a-2',
       'Child: a-2',
@@ -433,9 +431,9 @@ describe('createSubscription', () => {
       'Parent.componentDidUpdate',
     ]);
 
-    // Updates from the new subscribable should be ignored.
+    // Updates from the new subsribable should be ignored.
     observableB.next('b-1');
-    expect(Scheduler).toFlushAndYield([]);
+    expect(ReactNoop.flush()).toEqual([]);
     expect(log).toEqual([
       'Parent.componentDidMount',
       'Parent.componentDidUpdate',
@@ -481,7 +479,7 @@ describe('createSubscription', () => {
         <Subscription source={observable}>{value => null}</Subscription>,
       );
 
-      expect(Scheduler).toFlushAndThrow(
+      expect(ReactNoop.flush).toThrow(
         'A subscription must return an unsubscribe function.',
       );
     });

packages/eslint-plugin-react-hooks/README.md

@@ -1,45 +0,0 @@
-# `eslint-plugin-react-hooks`
-
-This ESLint plugin enforces the [Rules of Hooks](https://reactjs.org/docs/hooks-rules.html).
-
-It is a part of the [Hooks API](https://reactjs.org/docs/hooks-intro.html) for React.
-
-## Installation
-
-**Note: If you're using Create React App, please wait for a corresponding release of `react-scripts` that includes this rule instead of adding it directly.**
-
-Assuming you already have ESLint installed, run:
-
-```sh
-# npm
-npm install eslint-plugin-react-hooks --save-dev
-
-# yarn
-yarn add eslint-plugin-react-hooks --dev
-```
-
-Then add it to your ESLint configuration:
-
-```js
-{
-  "plugins": [
-    // ...
-    "react-hooks"
-  ],
-  "rules": {
-    // ...
-    "react-hooks/rules-of-hooks": "error",
-    "react-hooks/exhaustive-deps": "warn"
-  }
-}
-```
-
-## Valid and Invalid Examples
-
-Please refer to the [Rules of Hooks](https://reactjs.org/docs/hooks-rules.html) documentation and the [Hooks FAQ](https://reactjs.org/docs/hooks-faq.html#what-exactly-do-the-lint-rules-enforce) to learn more about this rule.
-
-For feedback about the `exhaustive-deps` rule, please post in [this thread](https://github.com/facebook/react/issues/14920).
-
-## License
-
-MIT