Update bundle sizes for 16.6.1 release

* Recover from errors with a boundary in completion phase

* Use a separate field for completing unit of work

* Use a simpler fix with one boolean

* Reoder conditions

* Clarify which paths are DEV-only

* Move duplicated line out

* Make it clearer this code is DEV-only

.eslintrc.js

@@ -37,10 +37,12 @@ module.exports = {
     'no-shadow': ERROR,
     'no-unused-expressions': ERROR,
     'no-unused-vars': [ERROR, {args: 'none'}],
+    'no-use-before-define': [ERROR, {functions: false, variables: false}],
     'no-useless-concat': OFF,
     'quotes': [ERROR, 'single', {avoidEscape: true, allowTemplateLiterals: true }],
     'space-before-blocks': ERROR,
     'space-before-function-paren': OFF,
+    'valid-typeof': [ERROR, {requireStringLiterals: true}],
 
     // React & JSX
     // Our transforms set this automatically
@@ -64,6 +66,7 @@ module.exports = {
     // CUSTOM RULES
     // the second argument of warning/invariant should be a literal string
     'react-internal/no-primitive-constructors': ERROR,
+    'react-internal/no-to-warn-dev-within-to-throw': ERROR,
     'react-internal/warning-and-invariant-args': ERROR,
   },
 
@@ -82,5 +85,6 @@ module.exports = {
     spyOnDevAndProd: true,
     spyOnProd: true,
     __PROFILE__: true,
+    __UMD__: true,
   },
 };

.flowcoverage

@@ -1,17 +0,0 @@
-{
-  "excludeGlob": [
-    "node_modules/**",
-    "packages/**/__mocks__/*.js",
-    "packages/**/__tests__/*.js"
-  ],
-  "includeGlob": [
-    "packages/**/src/**/*.js"
-  ],
-  "outputDir": "flow-coverage",
-  "threshold": 90,
-  "type": [
-    "html",
-    "json",
-    "text"
-  ]
-}

.gitignore

@@ -9,7 +9,6 @@ __benchmarks__
 build/
 remote-repo/
 coverage/
-flow-coverage/
 .module-cache
 fixtures/dom/public/react-dom.js
 fixtures/dom/public/react.js

.prettierrc.js

@@ -1,3 +1,5 @@
+'use strict';
+
 const {esNextPaths} = require('./scripts/shared/pathsByLanguageVersion');
 
 module.exports = {
@@ -6,6 +8,7 @@ module.exports = {
   jsxBracketSameLine: true,
   trailingComma: 'es5',
   printWidth: 80,
+  parser: 'babylon',
 
   overrides: [
     {

CHANGELOG.md

@@ -5,8 +5,161 @@
     Click to see more.
   </summary>
 
+
+### 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 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))
+
 </details>
 
+
+## 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
+
+* Fixed a recent `<iframe>` regression ([@JSteunou](https://github.com/JSteunou) in [#13650](https://github.com/facebook/react/pull/13650))
+* Fix `updateWrapper` so that `<textarea>`s no longer re-render when data is unchanged ([@joelbarbosa](https://github.com/joelbarbosa) in [#13643](https://github.com/facebook/react/pull/13643))
+
+### Schedule (Experimental)
+
+* Renaming "tracking" API to "tracing" ([@bvaughn](https://github.com/bvaughn) in [#13641](https://github.com/facebook/react/pull/13641))
+* Add UMD production+profiling entry points ([@bvaughn](https://github.com/bvaughn) in [#13642](https://github.com/facebook/react/pull/13642))
+* Refactored `schedule` to remove some React-isms and improve performance for when deferred updates time out ([@acdlite](https://github.com/acdlite) in [#13582](https://github.com/facebook/react/pull/13582))
+
+## 16.5.1 (September 13, 2018)
+
+### React
+
+* Improve the warning when `React.forwardRef` receives an unexpected number of arguments. ([@andresroberto](https://github.com/andresroberto) in [#13636](https://github.com/facebook/react/issues/13636))
+
+### React DOM
+
+* Fix a regression in unstable exports used by React Native Web. ([@aweary](https://github.com/aweary) in [#13598](https://github.com/facebook/react/issues/13598))
+* Fix a crash when component defines a method called `isReactComponent`. ([@gaearon](https://github.com/gaearon) in [#13608](https://github.com/facebook/react/issues/13608))
+* Fix a crash in development mode in IE9 when printing a warning. ([@link-alex](https://github.com/link-alex) in [#13620](https://github.com/facebook/react/issues/13620))
+* Provide a better error message when running `react-dom/profiling` with `schedule/tracking`. ([@bvaughn](https://github.com/bvaughn) in [#13605](https://github.com/facebook/react/issues/13605))
+* If a `ForwardRef` component defines a `displayName`, use it in warnings. ([@probablyup](https://github.com/probablyup) in [#13615](https://github.com/facebook/react/issues/13615))
+
+### Schedule (Experimental)
+
+* Add a separate profiling entry point at `schedule/tracking-profiling`. ([@bvaughn](https://github.com/bvaughn) in [#13605](https://github.com/facebook/react/issues/13605))
+
+## 16.5.0 (September 5, 2018)
+
+### React
+
+* Add a warning if `React.forwardRef` render function doesn't take exactly two arguments ([@bvaughn](https://github.com/bvaughn) in [#13168](https://github.com/facebook/react/issues/13168))
+* Improve the error message when passing an element to `createElement` by mistake ([@DCtheTall](https://github.com/DCtheTall) in [#13131](https://github.com/facebook/react/issues/13131))
+* Don't call profiler `onRender` until after mutations ([@bvaughn](https://github.com/bvaughn) in [#13572](https://github.com/facebook/react/issues/13572))
+
+### React DOM
+
+* Add support for React DevTools Profiler ([@bvaughn](https://github.com/bvaughn) in [#13058](https://github.com/facebook/react/issues/13058))
+* Add `react-dom/profiling` entry point alias for profiling in production ([@bvaughn](https://github.com/bvaughn) in [#13570](https://github.com/facebook/react/issues/13570))
+* Add `onAuxClick` event for browsers that support it ([@jquense](https://github.com/jquense) in [#11571](https://github.com/facebook/react/issues/11571))
+* Add `movementX` and `movementY` fields to mouse events ([@jasonwilliams](https://github.com/jasonwilliams) in [#9018](https://github.com/facebook/react/issues/9018))
+* Add `tangentialPressure` and `twist` fields to pointer events ([@motiz88](https://github.com/motiz88) in [#13374](https://github.com/facebook/react/issues/13374))
+* Minimally support iframes (nested browsing contexts) in selection event handling ([@acusti](https://github.com/acusti) in [#12037](https://github.com/facebook/react/issues/12037))
+* Support passing booleans to the `focusable` SVG attribute ([@gaearon](https://github.com/gaearon) in [#13339](https://github.com/facebook/react/issues/13339))
+* Ignore `<noscript>` on the client when hydrating ([@Ephem](https://github.com/Ephem) in [#13537](https://github.com/facebook/react/issues/13537))
+* Fix `gridArea` to be treated as a unitless CSS property ([@mgol](https://github.com/mgol) in [#13550](https://github.com/facebook/react/issues/13550))
+* 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 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))
+* Fix the `onClick` event not working inside a portal on iOS ([@aweary](https://github.com/aweary) in [#11927](https://github.com/facebook/react/issues/11927))
+* Fix a performance issue when thousands of roots are re-rendered ([@gaearon](https://github.com/gaearon) in [#13335](https://github.com/facebook/react/issues/13335))
+* Fix a performance regression that also caused `onChange` to not fire in some cases ([@gaearon](https://github.com/gaearon) in [#13423](https://github.com/facebook/react/issues/13423))
+* Handle errors in more edge cases gracefully ([@gaearon](https://github.com/gaearon) in [#13237](https://github.com/facebook/react/issues/13237) and [@acdlite](https://github.com/acdlite) in [#13269](https://github.com/facebook/react/issues/13269))
+* Don't use proxies for synthetic events in development ([@gaearon](https://github.com/gaearon) in [#12171](https://github.com/facebook/react/issues/12171))
+* Warn when `"false"` or `"true"` is the value of a boolean DOM prop ([@motiz88](https://github.com/motiz88) in [#13372](https://github.com/facebook/react/issues/13372))
+* Warn when `this.state` is initialized to `props` ([@veekas](https://github.com/veekas) in [#11658](https://github.com/facebook/react/issues/11658))
+* Don't compare `style` on hydration in IE due to noisy false positives ([@mgol](https://github.com/mgol) in [#13534](https://github.com/facebook/react/issues/13534))
+* Include `StrictMode` in the component stack ([@gaearon](https://github.com/gaearon) in [#13240](https://github.com/facebook/react/issues/13240))
+* Don't overwrite `window.event` in IE ([@ConradIrwin](https://github.com/ConradIrwin) in [#11696](https://github.com/facebook/react/issues/11696))
+* Improve component stack for the `folder/index.js` naming convention ([@gaearon](https://github.com/gaearon) in [#12059](https://github.com/facebook/react/issues/12059))
+* Improve a warning when using `getDerivedStateFromProps` without initialized state ([@flxwu](https://github.com/flxwu) in [#13317](https://github.com/facebook/react/issues/13317))
+* Improve a warning about invalid textarea usage ([@raunofreiberg](https://github.com/raunofreiberg) in [#13361](https://github.com/facebook/react/issues/13361))
+* Treat invalid Symbol and function values more consistently ([@raunofreiberg](https://github.com/raunofreiberg) in [#13362](https://github.com/facebook/react/issues/13362) and [#13389](https://github.com/facebook/react/issues/13389))
+* Allow Electron `<webview>` tag without warnings ([@philipp-spiess](https://github.com/philipp-spiess) in [#13301](https://github.com/facebook/react/issues/13301))
+* Don't show the uncaught error addendum if `e.preventDefault()` was called ([@gaearon](https://github.com/gaearon) in [#13384](https://github.com/facebook/react/issues/13384))
+* Warn about rendering Generators ([@gaearon](https://github.com/gaearon) in [#13312](https://github.com/facebook/react/issues/13312))
+* Remove irrelevant suggestion of a legacy method from a warning ([@zx6658](https://github.com/zx6658) in [#13169](https://github.com/facebook/react/issues/13169))
+* Remove `unstable_deferredUpdates` in favor of `unstable_scheduleWork` from `schedule` ([@gaearon](https://github.com/gaearon) in [#13488](https://github.com/facebook/react/issues/13488))
+* Fix unstable asynchronous mode from doing unnecessary work when an update takes too long ([@acdlite](https://github.com/acdlite) in [#13503](https://github.com/facebook/react/issues/13503))
+
+### React DOM Server
+
+* Fix crash with nullish children when using `dangerouslySetInnerHtml` in a selected `<option>` ([@mridgway](https://github.com/mridgway) in [#13078](https://github.com/facebook/react/issues/13078))
+* Fix crash when `setTimeout` is missing ([@dustinsoftware](https://github.com/dustinsoftware) in [#13088](https://github.com/facebook/react/issues/13088))
+
+### React Test Renderer and Test Utils
+
+* Fix `this` in a functional component for shallow renderer to be `undefined` ([@koba04](https://github.com/koba04) in [#13144](https://github.com/facebook/react/issues/13144))
+* Deprecate a Jest-specific `ReactTestUtils.mockComponent()` helper ([@bvaughn](https://github.com/bvaughn) in [#13193](https://github.com/facebook/react/issues/13193))
+* Warn about `ReactDOM.createPortal` usage within the test renderer ([@bvaughn](https://github.com/bvaughn) in [#12895](https://github.com/facebook/react/issues/12895))
+* Improve a confusing error message ([@gaearon](https://github.com/gaearon) in [#13351](https://github.com/facebook/react/issues/13351))
+
+### React ART
+
+* Add support for DevTools ([@yunchancho](https://github.com/yunchancho) in [#13173](https://github.com/facebook/react/issues/13173))
+
+### Schedule (Experimental)
+
+* New package for cooperatively scheduling work in a browser environment. It's used by React internally, but its public API is not finalized yet. ([@flarnie](https://github.com/flarnie) in [#12624](https://github.com/facebook/react/pull/12624))
+
+## 16.4.2 (August 1, 2018)
+
+### React DOM Server
+
+* Fix a [potential XSS vulnerability when the attacker controls an attribute name](https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html) (`CVE-2018-6341`). This fix is available in the latest `react-dom@16.4.2`, as well as in previous affected minor versions: `react-dom@16.0.1`, `react-dom@16.1.2`, `react-dom@16.2.1`, and `react-dom@16.3.3`. ([@gaearon](https://github.com/gaearon) in [#13302](https://github.com/facebook/react/pull/13302))
+
+* Fix a crash in the server renderer when an attribute is called `hasOwnProperty`. This fix is only available in `react-dom@16.4.2`. ([@gaearon](https://github.com/gaearon) in [#13303](https://github.com/facebook/react/pull/13303))
+
 ## 16.4.1 (June 13, 2018)
 
 ### React
@@ -70,6 +223,12 @@
 
 * The [new host config shape](https://github.com/facebook/react/blob/c601f7a64640290af85c9f0e33c78480656b46bc/packages/react-noop-renderer/src/createReactNoop.js#L82-L285) is flat and doesn't use nested objects. ([@gaearon](https://github.com/gaearon) in [#12792](https://github.com/facebook/react/pull/12792))
 
+## 16.3.3 (August 1, 2018)
+
+### React DOM Server
+
+* Fix a [potential XSS vulnerability when the attacker controls an attribute name](https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html) (`CVE-2018-6341`). This fix is available in the latest `react-dom@16.4.2`, as well as in previous affected minor versions: `react-dom@16.0.1`, `react-dom@16.1.2`, `react-dom@16.2.1`, and `react-dom@16.3.3`. ([@gaearon](https://github.com/gaearon) in [#13302](https://github.com/facebook/react/pull/13302))
+
 ## 16.3.2 (April 16, 2018)
 
 ### React
@@ -179,6 +338,12 @@
 
 * Fix a crash on updates. ([@rmhartog](https://github.com/rmhartog) in [#11955](https://github.com/facebook/react/pull/11955))
 
+## 16.2.1 (August 1, 2018)
+
+### React DOM Server
+
+* Fix a [potential XSS vulnerability when the attacker controls an attribute name](https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html) (`CVE-2018-6341`). This fix is available in the latest `react-dom@16.4.2`, as well as in previous affected minor versions: `react-dom@16.0.1`, `react-dom@16.1.2`, `react-dom@16.2.1`, and `react-dom@16.3.3`. ([@gaearon](https://github.com/gaearon) in [#13302](https://github.com/facebook/react/pull/13302))
+
 ## 16.2.0 (November 28, 2017)
 
 ### React
@@ -203,6 +368,12 @@
 
 * Many tests were rewritten against the public API. Big thanks to [everyone who contributed](https://github.com/facebook/react/issues/11299)!
 
+## 16.1.2 (August 1, 2018)
+
+### React DOM Server
+
+* Fix a [potential XSS vulnerability when the attacker controls an attribute name](https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html) (`CVE-2018-6341`). This fix is available in the latest `react-dom@16.4.2`, as well as in previous affected minor versions: `react-dom@16.0.1`, `react-dom@16.1.2`, `react-dom@16.2.1`, and `react-dom@16.3.3`. ([@gaearon](https://github.com/gaearon) in [#13302](https://github.com/facebook/react/pull/13302))
+
 ## 16.1.1 (November 13, 2017)
 
 ### React
@@ -293,6 +464,12 @@ Starting with 16.1.0, we will no longer be publishing new releases on Bower. You
 
 * First release of the [new experimental package](https://github.com/facebook/react/tree/master/packages/react-call-return) for parent-child communication. ([@gaearon](https://github.com/gaearon) in [#11364](https://github.com/facebook/react/pull/11364))
 
+## 16.0.1 (August 1, 2018)
+
+### React DOM Server
+
+* Fix a [potential XSS vulnerability when the attacker controls an attribute name](https://reactjs.org/blog/2018/08/01/react-v-16-4-2.html) (`CVE-2018-6341`). This fix is available in the latest `react-dom@16.4.2`, as well as in previous affected minor versions: `react-dom@16.0.1`, `react-dom@16.1.2`, `react-dom@16.2.1`, and `react-dom@16.3.3`. ([@gaearon](https://github.com/gaearon) in [#13302](https://github.com/facebook/react/pull/13302))
+
 ## 16.0.0 (September 26, 2017)
 
 ### New JS Environment Requirements
@@ -779,7 +956,7 @@ Each of these changes will continue to work as before with a new warning until t
 - `Object.is` is used in a number of places to compare values, which leads to fewer false positives, especially involving `NaN`. In particular, this affects the `shallowCompare` add-on. ([@chicoxyzzy](https://github.com/chicoxyzzy) in [#6132](https://github.com/facebook/react/pull/6132))
 - Add-Ons: ReactPerf no longer instruments adding or removing an event listener because they don’t really touch the DOM due to event delegation. ([@antoaravinth](https://github.com/antoaravinth) in [#5209](https://github.com/facebook/react/pull/5209))
 
-### Other improvements
+### Other improvements
 
 - React now uses `loose-envify` instead of `envify` so it installs fewer transitive dependencies. ([@qerub](https://github.com/qerub) in [#6303](https://github.com/facebook/react/pull/6303))
 - Shallow renderer now exposes `getMountedInstance()`. ([@glenjamin](https://github.com/glenjamin) in [#4918](https://github.com/facebook/react/pull/4918))

CODE_OF_CONDUCT.md

@@ -1,3 +1,3 @@
 # Code of Conduct
 
-Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please [read the full text](https://code.facebook.com/pages/876921332402685/open-source-code-of-conduct) 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.fb.com/codeofconduct/) so that you can understand what actions will and will not be tolerated.

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2013-present, Facebook, Inc.
+Copyright (c) Facebook, Inc. and its affiliates.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -54,7 +54,7 @@ ReactDOM.render(
 
 This example will render "Hello Taylor" into a container on the page.
 
-You'll notice that we used an HTML-like syntax; [we call it JSX](https://reactjs.org/docs/introducing-jsx.html). JSX is not required to use React, but it makes code more readable, and writing it feels like writing HTML.
+You'll notice that we used an HTML-like syntax; [we call it JSX](https://reactjs.org/docs/introducing-jsx.html). JSX is not required to use React, but it makes code more readable, and writing it feels like writing HTML. If you're using React as a `<script>` tag, read [this section](https://reactjs.org/docs/add-react-to-a-website.html#optional-try-react-with-jsx) on integrating JSX; otherwise, the [recommended JavaScript toolchains](https://reactjs.org/docs/create-a-new-react-app.html) handle it automatically.
 
 ## Contributing
 

appveyor.yml

@@ -5,8 +5,9 @@ init:
   - git config --global core.autocrlf input
 
 environment:
-  nodejs_version: 8
   JAVA_HOME: C:\Program Files\Java\jdk1.8.0
+  matrix:
+    - nodejs_version: 10
 
 # Finish on first failed build
 matrix:

dangerfile.js

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * 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.

fixtures/art/VectorWidget.js

@@ -1,5 +1,5 @@
 /**
- * Copyright (c) 2013-present, Facebook, Inc.
+ * 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.

fixtures/attribute-behavior/AttributeTableSnapshot.md

@@ -277,9 +277,9 @@
 | Test Case | Flags | Result |
 | --- | --- | --- |
 | `action=(string)`| (changed)| `"https://reactjs.com/"` |
-| `action=(empty string)`| (changed)| `"http://localhost:3000/"` |
+| `action=(empty string)`| (initial)| `"http://localhost:3000/"` |
 | `action=(array with string)`| (changed)| `"https://reactjs.com/"` |
-| `action=(empty array)`| (changed)| `"http://localhost:3000/"` |
+| `action=(empty array)`| (initial)| `"http://localhost:3000/"` |
 | `action=(object)`| (changed)| `"http://localhost:3000/result%20of%20toString()"` |
 | `action=(numeric string)`| (changed)| `"http://localhost:3000/42"` |
 | `action=(-1)`| (changed)| `"http://localhost:3000/-1"` |
@@ -287,16 +287,16 @@
 | `action=(integer)`| (changed)| `"http://localhost:3000/1"` |
 | `action=(NaN)`| (changed, warning)| `"http://localhost:3000/NaN"` |
 | `action=(float)`| (changed)| `"http://localhost:3000/99.99"` |
-| `action=(true)`| (initial, warning)| `<empty string>` |
-| `action=(false)`| (initial, warning)| `<empty string>` |
+| `action=(true)`| (initial, warning)| `"http://localhost:3000/"` |
+| `action=(false)`| (initial, warning)| `"http://localhost:3000/"` |
 | `action=(string 'true')`| (changed)| `"http://localhost:3000/true"` |
 | `action=(string 'false')`| (changed)| `"http://localhost:3000/false"` |
 | `action=(string 'on')`| (changed)| `"http://localhost:3000/on"` |
 | `action=(string 'off')`| (changed)| `"http://localhost:3000/off"` |
-| `action=(symbol)`| (initial, warning)| `<empty string>` |
-| `action=(function)`| (initial, warning)| `<empty string>` |
-| `action=(null)`| (initial)| `<empty string>` |
-| `action=(undefined)`| (initial)| `<empty string>` |
+| `action=(symbol)`| (initial, warning)| `"http://localhost:3000/"` |
+| `action=(function)`| (initial, warning)| `"http://localhost:3000/"` |
+| `action=(null)`| (initial)| `"http://localhost:3000/"` |
+| `action=(undefined)`| (initial)| `"http://localhost:3000/"` |
 
 ## `additive` (on `<animate>` inside `<svg>`)
 | Test Case | Flags | Result |
@@ -389,8 +389,8 @@
 | `allowFullScreen=(float)`| (changed)| `<boolean: true>` |
 | `allowFullScreen=(true)`| (changed)| `<boolean: true>` |
 | `allowFullScreen=(false)`| (initial)| `<boolean: false>` |
-| `allowFullScreen=(string 'true')`| (changed)| `<boolean: true>` |
-| `allowFullScreen=(string 'false')`| (changed)| `<boolean: true>` |
+| `allowFullScreen=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `allowFullScreen=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `allowFullScreen=(string 'on')`| (changed)| `<boolean: true>` |
 | `allowFullScreen=(string 'off')`| (changed)| `<boolean: true>` |
 | `allowFullScreen=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -739,8 +739,8 @@
 | `async=(float)`| (changed)| `<boolean: true>` |
 | `async=(true)`| (changed)| `<boolean: true>` |
 | `async=(false)`| (initial)| `<boolean: false>` |
-| `async=(string 'true')`| (changed)| `<boolean: true>` |
-| `async=(string 'false')`| (changed)| `<boolean: true>` |
+| `async=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `async=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `async=(string 'on')`| (changed)| `<boolean: true>` |
 | `async=(string 'off')`| (changed)| `<boolean: true>` |
 | `async=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -802,26 +802,26 @@
 | Test Case | Flags | Result |
 | --- | --- | --- |
 | `autoCapitalize=(string)`| (changed)| `"words"` |
-| `autoCapitalize=(empty string)`| (initial)| `"sentences"` |
+| `autoCapitalize=(empty string)`| (initial)| `<empty string>` |
 | `autoCapitalize=(array with string)`| (changed)| `"words"` |
-| `autoCapitalize=(empty array)`| (initial)| `"sentences"` |
-| `autoCapitalize=(object)`| (initial)| `"sentences"` |
-| `autoCapitalize=(numeric string)`| (initial)| `"sentences"` |
-| `autoCapitalize=(-1)`| (initial)| `"sentences"` |
-| `autoCapitalize=(0)`| (initial)| `"sentences"` |
-| `autoCapitalize=(integer)`| (initial)| `"sentences"` |
-| `autoCapitalize=(NaN)`| (initial, warning)| `"sentences"` |
-| `autoCapitalize=(float)`| (initial)| `"sentences"` |
-| `autoCapitalize=(true)`| (initial, warning)| `"sentences"` |
-| `autoCapitalize=(false)`| (initial, warning)| `"sentences"` |
-| `autoCapitalize=(string 'true')`| (initial)| `"sentences"` |
-| `autoCapitalize=(string 'false')`| (initial)| `"sentences"` |
-| `autoCapitalize=(string 'on')`| (initial)| `"sentences"` |
+| `autoCapitalize=(empty array)`| (initial)| `<empty string>` |
+| `autoCapitalize=(object)`| (changed)| `"sentences"` |
+| `autoCapitalize=(numeric string)`| (changed)| `"sentences"` |
+| `autoCapitalize=(-1)`| (changed)| `"sentences"` |
+| `autoCapitalize=(0)`| (changed)| `"sentences"` |
+| `autoCapitalize=(integer)`| (changed)| `"sentences"` |
+| `autoCapitalize=(NaN)`| (changed, warning)| `"sentences"` |
+| `autoCapitalize=(float)`| (changed)| `"sentences"` |
+| `autoCapitalize=(true)`| (initial, warning)| `<empty string>` |
+| `autoCapitalize=(false)`| (initial, warning)| `<empty string>` |
+| `autoCapitalize=(string 'true')`| (changed)| `"sentences"` |
+| `autoCapitalize=(string 'false')`| (changed)| `"sentences"` |
+| `autoCapitalize=(string 'on')`| (changed)| `"sentences"` |
 | `autoCapitalize=(string 'off')`| (changed)| `"none"` |
-| `autoCapitalize=(symbol)`| (initial, warning)| `"sentences"` |
-| `autoCapitalize=(function)`| (initial, warning)| `"sentences"` |
-| `autoCapitalize=(null)`| (initial)| `"sentences"` |
-| `autoCapitalize=(undefined)`| (initial)| `"sentences"` |
+| `autoCapitalize=(symbol)`| (initial, warning)| `<empty string>` |
+| `autoCapitalize=(function)`| (initial, warning)| `<empty string>` |
+| `autoCapitalize=(null)`| (initial)| `<empty string>` |
+| `autoCapitalize=(undefined)`| (initial)| `<empty string>` |
 
 ## `autoComplete` (on `<input>` inside `<div>`)
 | Test Case | Flags | Result |
@@ -889,8 +889,8 @@
 | `autoPlay=(float)`| (changed)| `<boolean: true>` |
 | `autoPlay=(true)`| (changed)| `<boolean: true>` |
 | `autoPlay=(false)`| (initial)| `<boolean: false>` |
-| `autoPlay=(string 'true')`| (changed)| `<boolean: true>` |
-| `autoPlay=(string 'false')`| (changed)| `<boolean: true>` |
+| `autoPlay=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `autoPlay=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `autoPlay=(string 'on')`| (changed)| `<boolean: true>` |
 | `autoPlay=(string 'off')`| (changed)| `<boolean: true>` |
 | `autoPlay=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -1389,8 +1389,8 @@
 | `checked=(float)`| (changed)| `<boolean: true>` |
 | `checked=(true)`| (changed)| `<boolean: true>` |
 | `checked=(false)`| (initial)| `<boolean: false>` |
-| `checked=(string 'true')`| (changed)| `<boolean: true>` |
-| `checked=(string 'false')`| (changed)| `<boolean: true>` |
+| `checked=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `checked=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `checked=(string 'on')`| (changed)| `<boolean: true>` |
 | `checked=(string 'off')`| (changed)| `<boolean: true>` |
 | `checked=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -1401,23 +1401,23 @@
 ## `Checked` (on `<input>` inside `<div>`)
 | Test Case | Flags | Result |
 | --- | --- | --- |
-| `Checked=(string)`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(empty string)`| (changed, warning)| `<empty string>` |
-| `Checked=(array with string)`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(empty array)`| (changed, warning)| `<empty string>` |
-| `Checked=(object)`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(numeric string)`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(-1)`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(0)`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(integer)`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(NaN)`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(float)`| (changed, warning, ssr mismatch)| `<empty string>` |
+| `Checked=(string)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(empty string)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(array with string)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(empty array)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(object)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(numeric string)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(-1)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(0)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(integer)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(NaN)`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(float)`| (initial, warning, ssr mismatch)| `<null>` |
 | `Checked=(true)`| (initial, warning)| `<null>` |
 | `Checked=(false)`| (initial, warning)| `<null>` |
-| `Checked=(string 'true')`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(string 'false')`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(string 'on')`| (changed, warning, ssr mismatch)| `<empty string>` |
-| `Checked=(string 'off')`| (changed, warning, ssr mismatch)| `<empty string>` |
+| `Checked=(string 'true')`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(string 'false')`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(string 'on')`| (initial, warning, ssr mismatch)| `<null>` |
+| `Checked=(string 'off')`| (initial, warning, ssr mismatch)| `<null>` |
 | `Checked=(symbol)`| (initial, warning)| `<null>` |
 | `Checked=(function)`| (initial, warning)| `<null>` |
 | `Checked=(null)`| (initial, warning)| `<null>` |
@@ -2139,8 +2139,8 @@
 | `controls=(float)`| (changed)| `<boolean: true>` |
 | `controls=(true)`| (changed)| `<boolean: true>` |
 | `controls=(false)`| (initial)| `<boolean: false>` |
-| `controls=(string 'true')`| (changed)| `<boolean: true>` |
-| `controls=(string 'false')`| (changed)| `<boolean: true>` |
+| `controls=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `controls=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `controls=(string 'on')`| (changed)| `<boolean: true>` |
 | `controls=(string 'off')`| (changed)| `<boolean: true>` |
 | `controls=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -2514,8 +2514,8 @@
 | `default=(float)`| (changed)| `<boolean: true>` |
 | `default=(true)`| (changed)| `<boolean: true>` |
 | `default=(false)`| (initial)| `<boolean: false>` |
-| `default=(string 'true')`| (changed)| `<boolean: true>` |
-| `default=(string 'false')`| (changed)| `<boolean: true>` |
+| `default=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `default=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `default=(string 'on')`| (changed)| `<boolean: true>` |
 | `default=(string 'off')`| (changed)| `<boolean: true>` |
 | `default=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -2551,25 +2551,25 @@
 ## `defaultChecked` (on `<input>` inside `<div>`)
 | Test Case | Flags | Result |
 | --- | --- | --- |
-| `defaultChecked=(string)`| (initial, ssr mismatch)| `<boolean: false>` |
+| `defaultChecked=(string)`| (changed)| `<boolean: true>` |
 | `defaultChecked=(empty string)`| (initial)| `<boolean: false>` |
-| `defaultChecked=(array with string)`| (initial, ssr mismatch)| `<boolean: false>` |
-| `defaultChecked=(empty array)`| (initial, ssr mismatch)| `<boolean: false>` |
-| `defaultChecked=(object)`| (initial, ssr mismatch)| `<boolean: false>` |
-| `defaultChecked=(numeric string)`| (initial, ssr mismatch)| `<boolean: false>` |
-| `defaultChecked=(-1)`| (initial, ssr mismatch)| `<boolean: false>` |
+| `defaultChecked=(array with string)`| (changed)| `<boolean: true>` |
+| `defaultChecked=(empty array)`| (changed)| `<boolean: true>` |
+| `defaultChecked=(object)`| (changed)| `<boolean: true>` |
+| `defaultChecked=(numeric string)`| (changed)| `<boolean: true>` |
+| `defaultChecked=(-1)`| (changed)| `<boolean: true>` |
 | `defaultChecked=(0)`| (initial)| `<boolean: false>` |
-| `defaultChecked=(integer)`| (initial, ssr mismatch)| `<boolean: false>` |
+| `defaultChecked=(integer)`| (changed)| `<boolean: true>` |
 | `defaultChecked=(NaN)`| (initial, warning, ssr warning)| `<boolean: false>` |
-| `defaultChecked=(float)`| (initial, ssr mismatch)| `<boolean: false>` |
-| `defaultChecked=(true)`| (initial, ssr mismatch)| `<boolean: false>` |
+| `defaultChecked=(float)`| (changed)| `<boolean: true>` |
+| `defaultChecked=(true)`| (changed)| `<boolean: true>` |
 | `defaultChecked=(false)`| (initial)| `<boolean: false>` |
-| `defaultChecked=(string 'true')`| (initial, ssr mismatch)| `<boolean: false>` |
-| `defaultChecked=(string 'false')`| (initial, ssr mismatch)| `<boolean: false>` |
-| `defaultChecked=(string 'on')`| (initial, ssr mismatch)| `<boolean: false>` |
-| `defaultChecked=(string 'off')`| (initial, ssr mismatch)| `<boolean: false>` |
-| `defaultChecked=(symbol)`| (initial)| `<boolean: false>` |
-| `defaultChecked=(function)`| (initial)| `<boolean: false>` |
+| `defaultChecked=(string 'true')`| (changed)| `<boolean: true>` |
+| `defaultChecked=(string 'false')`| (changed)| `<boolean: true>` |
+| `defaultChecked=(string 'on')`| (changed)| `<boolean: true>` |
+| `defaultChecked=(string 'off')`| (changed)| `<boolean: true>` |
+| `defaultChecked=(symbol)`| (changed, ssr mismatch)| `<boolean: true>` |
+| `defaultChecked=(function)`| (changed, ssr mismatch)| `<boolean: true>` |
 | `defaultChecked=(null)`| (initial)| `<boolean: false>` |
 | `defaultChecked=(undefined)`| (initial)| `<boolean: false>` |
 
@@ -2639,8 +2639,8 @@
 | `defer=(float)`| (changed)| `<boolean: true>` |
 | `defer=(true)`| (changed)| `<boolean: true>` |
 | `defer=(false)`| (initial)| `<boolean: false>` |
-| `defer=(string 'true')`| (changed)| `<boolean: true>` |
-| `defer=(string 'false')`| (changed)| `<boolean: true>` |
+| `defer=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `defer=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `defer=(string 'on')`| (changed)| `<boolean: true>` |
 | `defer=(string 'off')`| (changed)| `<boolean: true>` |
 | `defer=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -2764,8 +2764,8 @@
 | `disabled=(float)`| (changed)| `<boolean: true>` |
 | `disabled=(true)`| (changed)| `<boolean: true>` |
 | `disabled=(false)`| (initial)| `<boolean: false>` |
-| `disabled=(string 'true')`| (changed)| `<boolean: true>` |
-| `disabled=(string 'false')`| (changed)| `<boolean: true>` |
+| `disabled=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `disabled=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `disabled=(string 'on')`| (changed)| `<boolean: true>` |
 | `disabled=(string 'off')`| (changed)| `<boolean: true>` |
 | `disabled=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -3587,8 +3587,8 @@
 | `focusable=(integer)`| (changed)| `"1"` |
 | `focusable=(NaN)`| (changed, warning)| `"NaN"` |
 | `focusable=(float)`| (changed)| `"99.99"` |
-| `focusable=(true)`| (initial, warning)| `<null>` |
-| `focusable=(false)`| (initial, warning)| `<null>` |
+| `focusable=(true)`| (changed)| `"true"` |
+| `focusable=(false)`| (changed)| `"false"` |
 | `focusable=(string 'true')`| (changed)| `"true"` |
 | `focusable=(string 'false')`| (changed)| `"false"` |
 | `focusable=(string 'on')`| (changed)| `"on"` |
@@ -4139,8 +4139,8 @@
 | `formNoValidate=(float)`| (changed)| `<boolean: true>` |
 | `formNoValidate=(true)`| (changed)| `<boolean: true>` |
 | `formNoValidate=(false)`| (initial)| `<boolean: false>` |
-| `formNoValidate=(string 'true')`| (changed)| `<boolean: true>` |
-| `formNoValidate=(string 'false')`| (changed)| `<boolean: true>` |
+| `formNoValidate=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `formNoValidate=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `formNoValidate=(string 'on')`| (changed)| `<boolean: true>` |
 | `formNoValidate=(string 'off')`| (changed)| `<boolean: true>` |
 | `formNoValidate=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -4764,8 +4764,8 @@
 | `hidden=(float)`| (changed)| `<boolean: true>` |
 | `hidden=(true)`| (changed)| `<boolean: true>` |
 | `hidden=(false)`| (initial)| `<boolean: false>` |
-| `hidden=(string 'true')`| (changed)| `<boolean: true>` |
-| `hidden=(string 'false')`| (changed)| `<boolean: true>` |
+| `hidden=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `hidden=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `hidden=(string 'on')`| (changed)| `<boolean: true>` |
 | `hidden=(string 'off')`| (changed)| `<boolean: true>` |
 | `hidden=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -5489,8 +5489,8 @@
 | `itemScope=(float)`| (changed)| `<empty string>` |
 | `itemScope=(true)`| (changed)| `<empty string>` |
 | `itemScope=(false)`| (initial)| `<null>` |
-| `itemScope=(string 'true')`| (changed)| `<empty string>` |
-| `itemScope=(string 'false')`| (changed)| `<empty string>` |
+| `itemScope=(string 'true')`| (changed, warning)| `<empty string>` |
+| `itemScope=(string 'false')`| (changed, warning)| `<empty string>` |
 | `itemScope=(string 'on')`| (changed)| `<empty string>` |
 | `itemScope=(string 'off')`| (changed)| `<empty string>` |
 | `itemScope=(symbol)`| (initial, warning)| `<null>` |
@@ -6239,8 +6239,8 @@
 | `loop=(float)`| (changed)| `<boolean: true>` |
 | `loop=(true)`| (changed)| `<boolean: true>` |
 | `loop=(false)`| (initial)| `<boolean: false>` |
-| `loop=(string 'true')`| (changed)| `<boolean: true>` |
-| `loop=(string 'false')`| (changed)| `<boolean: true>` |
+| `loop=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `loop=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `loop=(string 'on')`| (changed)| `<boolean: true>` |
 | `loop=(string 'off')`| (changed)| `<boolean: true>` |
 | `loop=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -7064,8 +7064,8 @@
 | `multiple=(float)`| (changed)| `<boolean: true>` |
 | `multiple=(true)`| (changed)| `<boolean: true>` |
 | `multiple=(false)`| (initial)| `<boolean: false>` |
-| `multiple=(string 'true')`| (changed)| `<boolean: true>` |
-| `multiple=(string 'false')`| (changed)| `<boolean: true>` |
+| `multiple=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `multiple=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `multiple=(string 'on')`| (changed)| `<boolean: true>` |
 | `multiple=(string 'off')`| (changed)| `<boolean: true>` |
 | `multiple=(symbol)`| (changed, warning, ssr mismatch)| `<boolean: true>` |
@@ -7076,23 +7076,23 @@
 ## `muted` (on `<video>` inside `<div>`)
 | Test Case | Flags | Result |
 | --- | --- | --- |
-| `muted=(string)`| (changed, ssr mismatch)| `<boolean: true>` |
+| `muted=(string)`| (changed)| `<boolean: true>` |
 | `muted=(empty string)`| (initial)| `<boolean: false>` |
-| `muted=(array with string)`| (changed, ssr mismatch)| `<boolean: true>` |
-| `muted=(empty array)`| (changed, ssr mismatch)| `<boolean: true>` |
-| `muted=(object)`| (changed, ssr mismatch)| `<boolean: true>` |
-| `muted=(numeric string)`| (changed, ssr mismatch)| `<boolean: true>` |
-| `muted=(-1)`| (changed, ssr mismatch)| `<boolean: true>` |
+| `muted=(array with string)`| (changed)| `<boolean: true>` |
+| `muted=(empty array)`| (changed)| `<boolean: true>` |
+| `muted=(object)`| (changed)| `<boolean: true>` |
+| `muted=(numeric string)`| (changed)| `<boolean: true>` |
+| `muted=(-1)`| (changed)| `<boolean: true>` |
 | `muted=(0)`| (initial)| `<boolean: false>` |
-| `muted=(integer)`| (changed, ssr mismatch)| `<boolean: true>` |
+| `muted=(integer)`| (changed)| `<boolean: true>` |
 | `muted=(NaN)`| (initial, warning)| `<boolean: false>` |
-| `muted=(float)`| (changed, ssr mismatch)| `<boolean: true>` |
-| `muted=(true)`| (changed, ssr mismatch)| `<boolean: true>` |
+| `muted=(float)`| (changed)| `<boolean: true>` |
+| `muted=(true)`| (changed)| `<boolean: true>` |
 | `muted=(false)`| (initial)| `<boolean: false>` |
-| `muted=(string 'true')`| (changed, ssr mismatch)| `<boolean: true>` |
-| `muted=(string 'false')`| (changed, ssr mismatch)| `<boolean: true>` |
-| `muted=(string 'on')`| (changed, ssr mismatch)| `<boolean: true>` |
-| `muted=(string 'off')`| (changed, ssr mismatch)| `<boolean: true>` |
+| `muted=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `muted=(string 'false')`| (changed, warning)| `<boolean: true>` |
+| `muted=(string 'on')`| (changed)| `<boolean: true>` |
+| `muted=(string 'off')`| (changed)| `<boolean: true>` |
 | `muted=(symbol)`| (initial, warning)| `<boolean: false>` |
 | `muted=(function)`| (initial, warning)| `<boolean: false>` |
 | `muted=(null)`| (initial)| `<boolean: false>` |
@@ -7148,6 +7148,31 @@
 | `name=(null)`| (initial)| `<null>` |
 | `name=(undefined)`| (initial)| `<null>` |
 
+## `noModule` (on `<script>` inside `<div>`)
+| Test Case | Flags | Result |
+| --- | --- | --- |
+| `noModule=(string)`| (changed)| `<boolean: true>` |
+| `noModule=(empty string)`| (initial)| `<boolean: false>` |
+| `noModule=(array with string)`| (changed)| `<boolean: true>` |
+| `noModule=(empty array)`| (changed)| `<boolean: true>` |
+| `noModule=(object)`| (changed)| `<boolean: true>` |
+| `noModule=(numeric string)`| (changed)| `<boolean: true>` |
+| `noModule=(-1)`| (changed)| `<boolean: true>` |
+| `noModule=(0)`| (initial)| `<boolean: false>` |
+| `noModule=(integer)`| (changed)| `<boolean: true>` |
+| `noModule=(NaN)`| (initial, warning)| `<boolean: false>` |
+| `noModule=(float)`| (changed)| `<boolean: true>` |
+| `noModule=(true)`| (changed)| `<boolean: true>` |
+| `noModule=(false)`| (initial)| `<boolean: false>` |
+| `noModule=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `noModule=(string 'false')`| (changed, warning)| `<boolean: true>` |
+| `noModule=(string 'on')`| (changed)| `<boolean: true>` |
+| `noModule=(string 'off')`| (changed)| `<boolean: true>` |
+| `noModule=(symbol)`| (initial, warning)| `<boolean: false>` |
+| `noModule=(function)`| (initial, warning)| `<boolean: false>` |
+| `noModule=(null)`| (initial)| `<boolean: false>` |
+| `noModule=(undefined)`| (initial)| `<boolean: false>` |
+
 ## `nonce` (on `<div>` inside `<div>`)
 | Test Case | Flags | Result |
 | --- | --- | --- |
@@ -7173,31 +7198,6 @@
 | `nonce=(null)`| (initial)| `<null>` |
 | `nonce=(undefined)`| (initial)| `<null>` |
 
-## `noModule` (on `<script>` inside `<div>`)
-| Test Case | Flags | Result |
-| --- | --- | --- |
-| `noModule=(string)`| (changed)| `<boolean: true>` |
-| `noModule=(empty string)`| (initial)| `<boolean: false>` |
-| `noModule=(array with string)`| (changed)| `<boolean: true>` |
-| `noModule=(empty array)`| (changed)| `<boolean: true>` |
-| `noModule=(object)`| (changed)| `<boolean: true>` |
-| `noModule=(numeric string)`| (changed)| `<boolean: true>` |
-| `noModule=(-1)`| (changed)| `<boolean: true>` |
-| `noModule=(0)`| (initial)| `<boolean: false>` |
-| `noModule=(integer)`| (changed)| `<boolean: true>` |
-| `noModule=(NaN)`| (initial, warning)| `<boolean: false>` |
-| `noModule=(float)`| (changed)| `<boolean: true>` |
-| `noModule=(true)`| (changed)| `<boolean: true>` |
-| `noModule=(false)`| (initial)| `<boolean: false>` |
-| `noModule=(string 'true')`| (changed)| `<boolean: true>` |
-| `noModule=(string 'false')`| (changed)| `<boolean: true>` |
-| `noModule=(string 'on')`| (changed)| `<boolean: true>` |
-| `noModule=(string 'off')`| (changed)| `<boolean: true>` |
-| `noModule=(symbol)`| (initial, warning)| `<boolean: false>` |
-| `noModule=(function)`| (initial, warning)| `<boolean: false>` |
-| `noModule=(null)`| (initial)| `<boolean: false>` |
-| `noModule=(undefined)`| (initial)| `<boolean: false>` |
-
 ## `noValidate` (on `<form>` inside `<div>`)
 | Test Case | Flags | Result |
 | --- | --- | --- |
@@ -7214,8 +7214,8 @@
 | `noValidate=(float)`| (changed)| `<boolean: true>` |
 | `noValidate=(true)`| (changed)| `<boolean: true>` |
 | `noValidate=(false)`| (initial)| `<boolean: false>` |
-| `noValidate=(string 'true')`| (changed)| `<boolean: true>` |
-| `noValidate=(string 'false')`| (changed)| `<boolean: true>` |
+| `noValidate=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `noValidate=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `noValidate=(string 'on')`| (changed)| `<boolean: true>` |
 | `noValidate=(string 'off')`| (changed)| `<boolean: true>` |
 | `noValidate=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -7464,8 +7464,8 @@
 | `open=(float)`| (changed)| `<boolean: true>` |
 | `open=(true)`| (changed)| `<boolean: true>` |
 | `open=(false)`| (initial)| `<boolean: false>` |
-| `open=(string 'true')`| (changed)| `<boolean: true>` |
-| `open=(string 'false')`| (changed)| `<boolean: true>` |
+| `open=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `open=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `open=(string 'on')`| (changed)| `<boolean: true>` |
 | `open=(string 'off')`| (changed)| `<boolean: true>` |
 | `open=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -8014,8 +8014,8 @@
 | `playsInline=(float)`| (changed)| `<empty string>` |
 | `playsInline=(true)`| (changed)| `<empty string>` |
 | `playsInline=(false)`| (initial)| `<null>` |
-| `playsInline=(string 'true')`| (changed)| `<empty string>` |
-| `playsInline=(string 'false')`| (changed)| `<empty string>` |
+| `playsInline=(string 'true')`| (changed, warning)| `<empty string>` |
+| `playsInline=(string 'false')`| (changed, warning)| `<empty string>` |
 | `playsInline=(string 'on')`| (changed)| `<empty string>` |
 | `playsInline=(string 'off')`| (changed)| `<empty string>` |
 | `playsInline=(symbol)`| (initial, warning)| `<null>` |
@@ -8227,26 +8227,26 @@
 | Test Case | Flags | Result |
 | --- | --- | --- |
 | `preload=(string)`| (changed)| `"none"` |
-| `preload=(empty string)`| (initial)| `"auto"` |
+| `preload=(empty string)`| (changed)| `"auto"` |
 | `preload=(array with string)`| (changed)| `"none"` |
-| `preload=(empty array)`| (initial)| `"auto"` |
-| `preload=(object)`| (initial)| `"auto"` |
-| `preload=(numeric string)`| (initial)| `"auto"` |
-| `preload=(-1)`| (initial)| `"auto"` |
-| `preload=(0)`| (initial)| `"auto"` |
-| `preload=(integer)`| (initial)| `"auto"` |
-| `preload=(NaN)`| (initial, warning)| `"auto"` |
-| `preload=(float)`| (initial)| `"auto"` |
-| `preload=(true)`| (initial, warning)| `"auto"` |
-| `preload=(false)`| (initial, warning)| `"auto"` |
-| `preload=(string 'true')`| (initial)| `"auto"` |
-| `preload=(string 'false')`| (initial)| `"auto"` |
-| `preload=(string 'on')`| (initial)| `"auto"` |
-| `preload=(string 'off')`| (initial)| `"auto"` |
-| `preload=(symbol)`| (initial, warning)| `"auto"` |
-| `preload=(function)`| (initial, warning)| `"auto"` |
-| `preload=(null)`| (initial)| `"auto"` |
-| `preload=(undefined)`| (initial)| `"auto"` |
+| `preload=(empty array)`| (changed)| `"auto"` |
+| `preload=(object)`| (initial)| `"metadata"` |
+| `preload=(numeric string)`| (initial)| `"metadata"` |
+| `preload=(-1)`| (initial)| `"metadata"` |
+| `preload=(0)`| (initial)| `"metadata"` |
+| `preload=(integer)`| (initial)| `"metadata"` |
+| `preload=(NaN)`| (initial, warning)| `"metadata"` |
+| `preload=(float)`| (initial)| `"metadata"` |
+| `preload=(true)`| (initial, warning)| `"metadata"` |
+| `preload=(false)`| (initial, warning)| `"metadata"` |
+| `preload=(string 'true')`| (initial)| `"metadata"` |
+| `preload=(string 'false')`| (initial)| `"metadata"` |
+| `preload=(string 'on')`| (initial)| `"metadata"` |
+| `preload=(string 'off')`| (initial)| `"metadata"` |
+| `preload=(symbol)`| (initial, warning)| `"metadata"` |
+| `preload=(function)`| (initial, warning)| `"metadata"` |
+| `preload=(null)`| (initial)| `"metadata"` |
+| `preload=(undefined)`| (initial)| `"metadata"` |
 
 ## `preserveAlpha` (on `<feConvolveMatrix>` inside `<svg>`)
 | Test Case | Flags | Result |
@@ -8489,8 +8489,8 @@
 | `readOnly=(float)`| (changed)| `<boolean: true>` |
 | `readOnly=(true)`| (changed)| `<boolean: true>` |
 | `readOnly=(false)`| (initial)| `<boolean: false>` |
-| `readOnly=(string 'true')`| (changed)| `<boolean: true>` |
-| `readOnly=(string 'false')`| (changed)| `<boolean: true>` |
+| `readOnly=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `readOnly=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `readOnly=(string 'on')`| (changed)| `<boolean: true>` |
 | `readOnly=(string 'off')`| (changed)| `<boolean: true>` |
 | `readOnly=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -8714,8 +8714,8 @@
 | `required=(float)`| (changed)| `<boolean: true>` |
 | `required=(true)`| (changed)| `<boolean: true>` |
 | `required=(false)`| (initial)| `<boolean: false>` |
-| `required=(string 'true')`| (changed)| `<boolean: true>` |
-| `required=(string 'false')`| (changed)| `<boolean: true>` |
+| `required=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `required=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `required=(string 'on')`| (changed)| `<boolean: true>` |
 | `required=(string 'off')`| (changed)| `<boolean: true>` |
 | `required=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -8889,8 +8889,8 @@
 | `reversed=(float)`| (changed)| `<boolean: true>` |
 | `reversed=(true)`| (changed)| `<boolean: true>` |
 | `reversed=(false)`| (initial)| `<boolean: false>` |
-| `reversed=(string 'true')`| (changed)| `<boolean: true>` |
-| `reversed=(string 'false')`| (changed)| `<boolean: true>` |
+| `reversed=(string 'true')`| (changed, warning)| `<boolean: true>` |
+| `reversed=(string 'false')`| (changed, warning)| `<boolean: true>` |
 | `reversed=(string 'on')`| (changed)| `<boolean: true>` |
 | `reversed=(string 'off')`| (changed)| `<boolean: true>` |
 | `reversed=(symbol)`| (initial, warning)| `<boolean: false>` |
@@ -8983,7 +8983,7 @@
 | `rowSpan=(object)`| (initial, ssr error, ssr mismatch)| `<number: 1>` |
 | `rowSpan=(numeric string)`| (changed, ssr error, ssr mismatch)| `<number: 42>` |
 | `rowSpan=(-1)`| (initial, ssr error, ssr mismatch)| `<number: 1>` |
-| `rowSpan=(0)`| (initial, ssr error, ssr mismatch)| `<number: 1>` |
+| `rowSpan=(0)`| (changed, ssr error, ssr mismatch)| `<number: 0>` |
 | `rowSpan=(integer)`| (initial, ssr error, ssr mismatch)| `<number: 1>` |
 | `rowSpan=(NaN)`| (initial, warning, ssr error, ssr mismatch)| `<number: 1>` |
 | `rowSpan=(float)`| (changed, ssr error, ssr mismatch)| `<number: 99>` |
@@ -9139,8 +9139,8 @@
 | `scoped=(float)`| (changed)| `<empty string>` |
 | `scoped=(true)`| (changed)| `<empty string>` |
 | `scoped=(false)`| (initial)| `<null>` |
-| `scoped=(string 'true')`| (changed)| `<empty string>` |
-| `scoped=(string 'false')`| (changed)| `<empty string>` |
+| `scoped=(string 'true')`| (changed, warning)| `<empty string>` |
+| `scoped=(string 'false')`| (changed, warning)| `<empty string>` |
 | `scoped=(string 'on')`| (changed)| `<empty string>` |
 | `scoped=(string 'off')`| (changed)| `<empty string>` |
 | `scoped=(symbol)`| (initial, warning)| `<null>` |
@@ -9189,8 +9189,8 @@
 | `seamless=(float)`| (changed)| `<empty string>` |
 | `seamless=(true)`| (changed)| `<empty string>` |
 | `seamless=(false)`| (initial)| `<null>` |
-| `seamless=(string 'true')`| (changed)| `<empty string>` |
-| `seamless=(string 'false')`| (changed)| `<empty string>` |
+| `seamless=(string 'true')`| (changed, warning)| `<empty string>` |
+| `seamless=(string 'false')`| (changed, warning)| `<empty string>` |
 | `seamless=(string 'on')`| (changed)| `<empty string>` |
 | `seamless=(string 'off')`| (changed)| `<empty string>` |
 | `seamless=(symbol)`| (initial, warning)| `<null>` |
@@ -9264,8 +9264,8 @@
 | `selected=(float)`| (initial, warning, ssr warning)| `<boolean: true>` |
 | `selected=(true)`| (initial, warning, ssr warning)| `<boolean: true>` |
 | `selected=(false)`| (initial, warning, ssr warning)| `<boolean: true>` |
-| `selected=(string 'true')`| (initial, warning, ssr warning)| `<boolean: true>` |
-| `selected=(string 'false')`| (initial, warning, ssr warning)| `<boolean: true>` |
+| `selected=(string 'true')`| (initial, warning)| `<boolean: true>` |
+| `selected=(string 'false')`| (initial, warning)| `<boolean: true>` |
 | `selected=(string 'on')`| (initial, warning, ssr warning)| `<boolean: true>` |
 | `selected=(string 'off')`| (initial, warning, ssr warning)| `<boolean: true>` |
 | `selected=(symbol)`| (initial, warning)| `<boolean: true>` |
@@ -11868,8 +11868,8 @@
 | `value=(string 'false')`| (changed)| `"false"` |
 | `value=(string 'on')`| (changed)| `"on"` |
 | `value=(string 'off')`| (changed)| `"off"` |
-| `value=(symbol)`| (changed, error, warning, ssr error)| `` |
-| `value=(function)`| (changed, warning, ssr warning)| `"function f() {}"` |
+| `value=(symbol)`| (initial, warning, ssr error, ssr mismatch)| `<empty string>` |
+| `value=(function)`| (initial, warning, ssr mismatch)| `<empty string>` |
 | `value=(null)`| (initial, warning, ssr warning)| `<empty string>` |
 | `value=(undefined)`| (initial)| `<empty string>` |
 
@@ -11893,8 +11893,8 @@
 | `value=(string 'false')`| (changed)| `"false"` |
 | `value=(string 'on')`| (changed)| `"on"` |
 | `value=(string 'off')`| (changed)| `"off"` |
-| `value=(symbol)`| (changed, error, warning, ssr mismatch)| `` |
-| `value=(function)`| (changed, warning, ssr mismatch)| `"function f() {}"` |
+| `value=(symbol)`| (initial, warning)| `<empty string>` |
+| `value=(function)`| (initial, warning)| `<empty string>` |
 | `value=(null)`| (initial)| `<empty string>` |
 | `value=(undefined)`| (initial)| `<empty string>` |
 

fixtures/attribute-behavior/README.md

@@ -20,7 +20,7 @@ The left box shows the property (or attribute) assigned by React 15.\*, and the
 right box shows the property (or attribute) assigned by the latest version of
 React 16.
 
-Right now we use a purple outline to call out cases where the assigned property
+Right now, we use a purple outline to call out cases where the assigned property
 (or attribute) has changed between React 15 and 16.
 
 ---

fixtures/dom/.gitignore

@@ -10,6 +10,7 @@ coverage
 build
 public/react.development.js
 public/react-dom.development.js
+public/react-dom-server.browser.development.js
 
 # misc
 .DS_Store

fixtures/dom/package.json

@@ -6,17 +6,19 @@
     "react-scripts": "^1.0.11"
   },
   "dependencies": {
+    "@babel/standalone": "^7.0.0",
     "classnames": "^2.2.5",
+    "codemirror": "^5.40.0",
     "core-js": "^2.4.1",
     "prop-types": "^15.6.0",
     "query-string": "^4.2.3",
     "react": "^15.4.1",
     "react-dom": "^15.4.1",
-    "semver": "^5.3.0"
+    "semver": "^5.5.0"
   },
   "scripts": {
     "start": "react-scripts start",
-    "prestart": "cp ../../build/dist/react.development.js public/ && cp ../../build/dist/react-dom.development.js public/",
+    "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/renderer.html

@@ -0,0 +1,86 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <title>Renderer</title>
+    <style>
+      *,
+      *:before,
+      *:after {
+        box-sizing: border-box;
+      }
+
+      html,
+      body {
+        font-family: sans-serif;
+        margin: 0;
+        height: 100%;
+      }
+
+      body {
+        padding-top: 32px;
+      }
+
+      #status {
+        font-size: 12px;
+        left: 8px;
+        letter-spacing: 0.05em;
+        line-height: 16px;
+        margin: -8px 0 0;
+        max-width: 50%;
+        overflow: hidden;
+        position: absolute;
+        text-align: left;
+        text-overflow: ellipsis;
+        top: 50%;
+        white-space: nowrap;
+        width: 100%;
+      }
+
+      #output {
+        margin: 16px;
+      }
+
+      .header {
+        background: white;
+        border-bottom: 1px solid #d9d9d9;
+        padding: 4px;
+        top: 0;
+        left: 0;
+        position: fixed;
+        width: 100%;
+        text-align: right;
+      }
+
+      .controls {
+        display: inline-block;
+        margin: 0;
+      }
+
+      .button {
+        background: #eee;
+        border-radius: 2px;
+        border: 1px solid #aaa;
+        font-size: 11px;
+        padding: 4px 6px;
+        text-transform: uppercase;
+      }
+    </style>
+  </head>
+  <body>
+    <header class="header">
+      <p id="status">Loading</p>
+
+      <menu class="controls">
+        <button class="button" id="hydrate">Hydrate</button>
+        <button class="button" id="reload">Reload</button>
+      </menu>
+    </header>
+
+    <div id="output"></div>
+
+    <script src="https://cdn.polyfill.io/v2/polyfill.min.js"></script>
+    <script src="renderer.js"></script>
+  </body>
+</html>

fixtures/dom/public/renderer.js

@@ -0,0 +1,141 @@
+/**
+ * Supports render.html, a piece of the hydration fixture. See /hydration
+ */
+
+'use strict';
+
+(function() {
+  var Fixture = null;
+  var output = document.getElementById('output');
+  var status = document.getElementById('status');
+  var hydrate = document.getElementById('hydrate');
+  var reload = document.getElementById('reload');
+  var renders = 0;
+  var failed = false;
+
+  function getQueryParam(key) {
+    var pattern = new RegExp(key + '=([^&]+)(&|$)');
+    var matches = window.location.search.match(pattern);
+
+    if (matches) {
+      return decodeURIComponent(matches[1]);
+    }
+
+    handleError(new Error('No key found for' + key));
+  }
+
+  function getBooleanQueryParam(key) {
+    return getQueryParam(key) === 'true';
+  }
+
+  function setStatus(label) {
+    status.innerHTML = label;
+  }
+
+  function prerender() {
+    setStatus('Generating markup');
+
+    output.innerHTML = ReactDOMServer.renderToString(
+      React.createElement(Fixture)
+    );
+
+    setStatus('Markup only (No React)');
+  }
+
+  function render() {
+    setStatus('Hydrating');
+
+    if (ReactDOM.hydrate) {
+      ReactDOM.hydrate(React.createElement(Fixture), output);
+    } else {
+      ReactDOM.render(React.createElement(Fixture), output);
+    }
+
+    setStatus(renders > 0 ? 'Re-rendered (' + renders + 'x)' : 'Hydrated');
+    renders += 1;
+    hydrate.innerHTML = 'Re-render';
+  }
+
+  function handleError(error) {
+    console.log(error);
+    failed = true;
+    setStatus('Javascript Error');
+    output.innerHTML = error;
+  }
+
+  function loadScript(src) {
+    return new Promise(function(resolve, reject) {
+      var script = document.createElement('script');
+      script.async = true;
+      script.src = src;
+
+      script.onload = resolve;
+      script.onerror = function(error) {
+        reject(new Error('Unable to load ' + src));
+      };
+
+      document.body.appendChild(script);
+    });
+  }
+
+  function injectFixture(src) {
+    Fixture = new Function(src + '\nreturn Fixture;')();
+
+    if (typeof Fixture === 'undefined') {
+      setStatus('Failed');
+      output.innerHTML = 'Please name your root component "Fixture"';
+    } else {
+      prerender();
+
+      if (getBooleanQueryParam('hydrate')) {
+        render();
+      }
+    }
+  }
+
+  function reloadFixture(code) {
+    renders = 0;
+    ReactDOM.unmountComponentAtNode(output);
+    injectFixture(code);
+  }
+
+  window.onerror = handleError;
+
+  reload.onclick = function() {
+    window.location.reload();
+  };
+
+  hydrate.onclick = render;
+
+  loadScript(getQueryParam('reactPath'))
+    .then(function() {
+      return getBooleanQueryParam('needsReactDOM')
+        ? loadScript(getQueryParam('reactDOMPath'))
+        : null;
+    })
+    .then(function() {
+      return loadScript(getQueryParam('reactDOMServerPath'));
+    })
+    .then(function() {
+      if (failed) {
+        return;
+      }
+
+      window.addEventListener('message', function(event) {
+        var data = JSON.parse(event.data);
+
+        switch (data.type) {
+          case 'code':
+            reloadFixture(data.payload);
+            break;
+          default:
+            throw new Error(
+              'Renderer Error: Unrecognized message "' + data.type + '"'
+            );
+        }
+      });
+
+      window.parent.postMessage(JSON.stringify({type: 'ready'}), '*');
+    })
+    .catch(handleError);
+})();

fixtures/dom/src/components/App.js

@@ -8,9 +8,7 @@ function App() {
   return (
     <div>
       <Header />
-      <div className="container">
-        <Fixtures />
-      </div>
+      <Fixtures />
     </div>
   );
 }

fixtures/dom/src/components/Fixture.js

@@ -1,4 +1,4 @@
-const PropTypes = window.PropTypes;
+import PropTypes from 'prop-types';
 const React = window.React;
 
 const propTypes = {

fixtures/dom/src/components/FixtureSet.js

@@ -3,7 +3,7 @@ const React = window.React;
 
 const propTypes = {
   title: PropTypes.node.isRequired,
-  description: PropTypes.node.isRequired,
+  description: PropTypes.node,
 };
 
 class FixtureSet extends React.Component {
@@ -11,7 +11,7 @@ class FixtureSet extends React.Component {
     const {title, description, children} = this.props;
 
     return (
-      <div>
+      <div className="container">
         <h1>{title}</h1>
         {description && <p>{description}</p>}
 

fixtures/dom/src/components/Header.js

@@ -35,11 +35,11 @@ class Header extends React.Component {
           <span className="header__logo">
             <img
               src={process.env.PUBLIC_URL + '/react-logo.svg'}
-              alt=""
-              width="32"
-              height="32"
+              alt="React"
+              width="20"
+              height="20"
             />
-            React Sandbox (v{React.version})
+            <a href="/">DOM Test Fixtures (v{React.version})</a>
           </span>
 
           <div className="header-controls">
@@ -48,7 +48,8 @@ class Header extends React.Component {
               <select
                 value={window.location.pathname}
                 onChange={this.handleFixtureChange}>
-                <option value="/">Select a Fixture</option>
+                <option value="/">Home</option>
+                <option value="/hydration">Hydration</option>
                 <option value="/range-inputs">Range Inputs</option>
                 <option value="/text-inputs">Text Inputs</option>
                 <option value="/number-inputs">Number Input</option>
@@ -66,6 +67,8 @@ class Header extends React.Component {
                 <option value="/media-events">Media Events</option>
                 <option value="/pointer-events">Pointer Events</option>
                 <option value="/mouse-events">Mouse Events</option>
+                <option value="/selection-events">Selection Events</option>
+                <option value="/suspense">Suspense</option>
               </select>
             </label>
             <label htmlFor="react_version">

fixtures/dom/src/components/Iframe.js

@@ -0,0 +1,58 @@
+const React = window.React;
+const ReactDOM = window.ReactDOM;
+
+class IframePortal extends React.Component {
+  iframeRef = null;
+
+  handleRef = ref => {
+    if (ref !== this.iframeRef) {
+      this.iframeRef = ref;
+      if (ref) {
+        if (ref.contentDocument && this.props.head) {
+          ref.contentDocument.head.innerHTML = this.props.head;
+        }
+        // Re-render must take place in the next tick (Firefox)
+        setTimeout(() => {
+          this.forceUpdate();
+        });
+      }
+    }
+  };
+
+  render() {
+    const ref = this.iframeRef;
+    let portal = null;
+    if (ref && ref.contentDocument) {
+      portal = ReactDOM.createPortal(
+        this.props.children,
+        ref.contentDocument.body
+      );
+    }
+
+    return (
+      <div>
+        <iframe
+          title="Iframe portal"
+          style={{border: 'none', height: this.props.height}}
+          ref={this.handleRef}
+        />
+        {portal}
+      </div>
+    );
+  }
+}
+
+class IframeSubtree extends React.Component {
+  warned = false;
+  render() {
+    if (!this.warned) {
+      console.error(
+        `IFrame has not yet been implemented for React v${React.version}`
+      );
+      this.warned = true;
+    }
+    return <div>{this.props.children}</div>;
+  }
+}
+
+export default (ReactDOM.createPortal ? IframePortal : IframeSubtree);

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

@@ -10,7 +10,7 @@ function onButtonClick() {
 export default class ButtonTestCases extends React.Component {
   render() {
     return (
-      <FixtureSet title="Buttons" description="">
+      <FixtureSet title="Buttons">
         <TestCase
           title="onClick with disabled buttons"
           description="The onClick event handler should not be invoked when clicking on a disabled buyaton">

fixtures/dom/src/components/fixtures/date-inputs/index.js

@@ -8,7 +8,7 @@ const React = window.React;
 class DateInputFixtures extends React.Component {
   render() {
     return (
-      <FixtureSet title="Dates" description="">
+      <FixtureSet title="Dates">
         <TestCase title="Switching between date and datetime-local">
           <TestCase.Steps>
             <li>Type a date into the date picker</li>

fixtures/dom/src/components/fixtures/error-handling/index.js

@@ -7,9 +7,21 @@ const ReactDOM = window.ReactDOM;
 function BadRender(props) {
   props.doThrow();
 }
+
+class BadDidMount extends React.Component {
+  componentDidMount() {
+    this.props.doThrow();
+  }
+
+  render() {
+    return null;
+  }
+}
+
 class ErrorBoundary extends React.Component {
   static defaultProps = {
     buttonText: 'Trigger error',
+    badChildType: BadRender,
   };
   state = {
     shouldThrow: false,
@@ -33,7 +45,8 @@ class ErrorBoundary extends React.Component {
       }
     }
     if (this.state.shouldThrow) {
-      return <BadRender doThrow={this.props.doThrow} />;
+      const BadChild = this.props.badChildType;
+      return <BadChild doThrow={this.props.doThrow} />;
     }
     return <button onClick={this.triggerError}>{this.props.buttonText}</button>;
   }
@@ -84,10 +97,154 @@ class TriggerErrorAndCatch extends React.Component {
   }
 }
 
+function silenceWindowError(event) {
+  event.preventDefault();
+}
+
+class SilenceErrors extends React.Component {
+  state = {
+    silenceErrors: false,
+  };
+  componentDidMount() {
+    if (this.state.silenceErrors) {
+      window.addEventListener('error', silenceWindowError);
+    }
+  }
+  componentDidUpdate(prevProps, prevState) {
+    if (!prevState.silenceErrors && this.state.silenceErrors) {
+      window.addEventListener('error', silenceWindowError);
+    } else if (prevState.silenceErrors && !this.state.silenceErrors) {
+      window.removeEventListener('error', silenceWindowError);
+    }
+  }
+  componentWillUnmount() {
+    if (this.state.silenceErrors) {
+      window.removeEventListener('error', silenceWindowError);
+    }
+  }
+  render() {
+    return (
+      <div>
+        <label>
+          <input
+            type="checkbox"
+            value={this.state.silenceErrors}
+            onChange={() =>
+              this.setState(state => ({
+                silenceErrors: !state.silenceErrors,
+              }))
+            }
+          />
+          Silence errors
+        </label>
+        {this.state.silenceErrors && (
+          <div>
+            {this.props.children}
+            <br />
+            <hr />
+            <b style={{color: 'red'}}>
+              Don't forget to uncheck "Silence errors" when you're done with
+              this test!
+            </b>
+          </div>
+        )}
+      </div>
+    );
+  }
+}
+class GetEventTypeDuringUpdate extends React.Component {
+  state = {};
+
+  onClick = () => {
+    this.expectUpdate = true;
+    this.forceUpdate();
+  };
+
+  componentDidUpdate() {
+    if (this.expectUpdate) {
+      this.expectUpdate = false;
+      this.setState({eventType: window.event.type});
+      setTimeout(() => {
+        this.setState({cleared: !window.event});
+      });
+    }
+  }
+
+  render() {
+    return (
+      <div className="test-fixture">
+        <button onClick={this.onClick}>Trigger callback in event.</button>
+        {this.state.eventType ? (
+          <p>
+            Got <b>{this.state.eventType}</b> event.
+          </p>
+        ) : (
+          <p>Got no event</p>
+        )}
+        {this.state.cleared ? (
+          <p>Event cleared correctly.</p>
+        ) : (
+          <p>Event failed to clear.</p>
+        )}
+      </div>
+    );
+  }
+}
+
+class SilenceRecoverableError extends React.Component {
+  render() {
+    return (
+      <SilenceErrors>
+        <ErrorBoundary
+          badChildType={BadRender}
+          buttonText={'Throw (render phase)'}
+          doThrow={() => {
+            throw new Error('Silenced error (render phase)');
+          }}
+        />
+        <ErrorBoundary
+          badChildType={BadDidMount}
+          buttonText={'Throw (commit phase)'}
+          doThrow={() => {
+            throw new Error('Silenced error (commit phase)');
+          }}
+        />
+      </SilenceErrors>
+    );
+  }
+}
+
+class TrySilenceFatalError extends React.Component {
+  container = document.createElement('div');
+
+  triggerErrorAndCatch = () => {
+    try {
+      ReactDOM.flushSync(() => {
+        ReactDOM.render(
+          <BadRender
+            doThrow={() => {
+              throw new Error('Caught error');
+            }}
+          />,
+          this.container
+        );
+      });
+    } catch (e) {}
+  };
+
+  render() {
+    return (
+      <SilenceErrors>
+        <button onClick={this.triggerErrorAndCatch}>Throw fatal error</button>
+      </SilenceErrors>
+    );
+  }
+}
+
 export default class ErrorHandlingTestCases extends React.Component {
   render() {
     return (
-      <FixtureSet title="Error handling" description="">
+      <FixtureSet title="Error handling">
         <TestCase
           title="Break on uncaught exceptions"
           description="In DEV, errors should be treated as uncaught, even though React catches them internally">
@@ -103,6 +260,12 @@ export default class ErrorHandlingTestCases extends React.Component {
             the BadRender component. After resuming, the "Trigger error" button
             should be replaced with "Captured an error: Oops!" Clicking reset
             should reset the test case.
+            <br />
+            <br />
+            In the console, you should see <b>two</b> messages: the actual error
+            ("Oops") printed natively by the browser with its JavaScript stack,
+            and our addendum ("The above error occurred in BadRender component")
+            with a React component stack.
           </TestCase.ExpectedResult>
           <Example
             doThrow={() => {
@@ -155,10 +318,59 @@ export default class ErrorHandlingTestCases extends React.Component {
           </TestCase.Steps>
           <TestCase.ExpectedResult>
             Open the console. "Uncaught Error: Caught error" should have been
-            logged by the browser.
+            logged by the browser. You should also see our addendum ("The above
+            error...").
           </TestCase.ExpectedResult>
           <TriggerErrorAndCatch />
         </TestCase>
+        <TestCase
+          title="Recoverable errors can be silenced with preventDefault (development mode only)"
+          description="">
+          <TestCase.Steps>
+            <li>Check the "Silence errors" checkbox below</li>
+            <li>Click the "Throw (render phase)" button</li>
+            <li>Click the "Throw (commit phase)" button</li>
+            <li>Uncheck the "Silence errors" checkbox</li>
+          </TestCase.Steps>
+          <TestCase.ExpectedResult>
+            Open the console. You shouldn't see <b>any</b> messages in the
+            console: neither the browser error, nor our "The above error"
+            addendum, from either of the buttons. The buttons themselves should
+            get replaced by two labels: "Captured an error: Silenced error
+            (render phase)" and "Captured an error: Silenced error (commit
+            phase)".
+          </TestCase.ExpectedResult>
+          <SilenceRecoverableError />
+        </TestCase>
+        <TestCase
+          title="Fatal errors cannot be silenced with preventDefault (development mode only)"
+          description="">
+          <TestCase.Steps>
+            <li>Check the "Silence errors" checkbox below</li>
+            <li>Click the "Throw fatal error" button</li>
+            <li>Uncheck the "Silence errors" checkbox</li>
+          </TestCase.Steps>
+          <TestCase.ExpectedResult>
+            Open the console. "Error: Caught error" should have been logged by
+            React. You should also see our addendum ("The above error...").
+          </TestCase.ExpectedResult>
+          <TrySilenceFatalError />
+        </TestCase>
+
+        {window.hasOwnProperty('event') ? (
+          <TestCase
+            title="Error handling does not interfere with window.event"
+            description="">
+            <TestCase.Steps>
+              <li>Click the "Trigger callback in event" button</li>
+            </TestCase.Steps>
+            <TestCase.ExpectedResult>
+              You should see "Got <b>click</b> event" and "Event cleared
+              successfully" below.
+            </TestCase.ExpectedResult>
+            <GetEventTypeDuringUpdate />
+          </TestCase>
+        ) : null}
       </FixtureSet>
     );
   }

fixtures/dom/src/components/fixtures/event-pooling/index.js

@@ -7,7 +7,7 @@ const React = window.React;
 class EventPooling extends React.Component {
   render() {
     return (
-      <FixtureSet title="Event Pooling" description="">
+      <FixtureSet title="Event Pooling">
         <MouseMove />
         <Persistence />
       </FixtureSet>

fixtures/dom/src/components/fixtures/home.js

@@ -0,0 +1,117 @@
+const React = window.React;
+
+export default function Home() {
+  return (
+    <main className="container">
+      <h1>DOM Test Fixtures</h1>
+      <p>
+        Use this site to test browser quirks and other behavior that can not be
+        captured through unit tests.
+      </p>
+      <section>
+        <h2>Tested Browsers</h2>
+        <table>
+          <thead>
+            <tr>
+              <th>Browser</th>
+              <th>Versions</th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr>
+              <td>Chrome - Desktop</td>
+              <td>
+                49<sup>*</sup>, Latest
+              </td>
+            </tr>
+            <tr>
+              <td>Chrome - Android</td>
+              <td>Latest</td>
+            </tr>
+            <tr>
+              <td>Firefox Desktop</td>
+              <td>
+                <a href="https://www.mozilla.org/en-US/firefox/organizations/">
+                  ESR<sup>†</sup>
+                </a>, Latest
+              </td>
+            </tr>
+            <tr>
+              <td>Internet Explorer</td>
+              <td>9, 10, 11</td>
+            </tr>
+            <tr>
+              <td>Microsoft Edge</td>
+              <td>14, Latest</td>
+            </tr>
+            <tr>
+              <td>Safari - Desktop</td>
+              <td>7, Latest</td>
+            </tr>
+            <tr>
+              <td>Safari - iOS</td>
+              <td>7, Latest</td>
+            </tr>
+          </tbody>
+        </table>
+        <footer>
+          <small>* Chrome 49 is the last release for Windows XP.</small>
+          <br />
+          <small>
+            † Firefox Extended Support Release (ESR) is used by many
+            institutions.
+          </small>
+        </footer>
+      </section>
+      <section>
+        <h2>How do I test browsers I don't have access to?</h2>
+        <p>
+          Getting test coverage across all of these browsers can be difficult,
+          particularly for older versions of evergreen browsers. Fortunately
+          there are a handful of tools that make browser testing easy.
+        </p>
+        <section>
+          <h3>Paid services</h3>
+          <ul>
+            <li>
+              <a href="https://browserstack.com">BrowserStack</a>
+            </li>
+            <li>
+              <a href="https://saucelabs.com">Sauce Labs</a>
+            </li>
+            <li>
+              <a href="https://crossbrowsertesting.com/">CrossBrowserTesting</a>
+            </li>
+          </ul>
+          <p>
+            These services provide access to all browsers we test, however they
+            cost money. There is no obligation to pay for them. Maintainers have
+            access to a BrowserStack subscription; feel free to contact a
+            maintainer or mention browsers where extra testing is required.
+          </p>
+        </section>
+        <section>
+          <h3>Browser downloads</h3>
+          <p>A handful of browsers are available for download directly:</p>
+          <ul>
+            <li>
+              <a href="https://developer.microsoft.com/en-us/microsoft-edge/tools/vms/">
+                Internet Explorer (9-11) and MS Edge virtual machines
+              </a>
+            </li>
+            <li>
+              <a href="https://www.chromium.org/getting-involved/download-chromium#TOC-Downloading-old-builds-of-Chrome-Chromium">
+                Chromium snapshots (for older versions of Chrome)
+              </a>
+            </li>
+            <li>
+              <a href="https://www.mozilla.org/en-US/firefox/organizations/">
+                Firefox Extended Support Release (ESR)
+              </a>
+            </li>
+          </ul>
+        </section>
+      </section>
+    </main>
+  );
+}

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

@@ -0,0 +1,85 @@
+const React = window.React;
+
+export class CodeEditor extends React.Component {
+  shouldComponentUpdate() {
+    return false;
+  }
+
+  componentDidMount() {
+    // Important: CodeMirror incorrectly lays out the editor
+    // if it executes before CSS has loaded
+    // https://github.com/graphql/graphiql/issues/33#issuecomment-318188555
+    Promise.all([
+      import('codemirror'),
+      import('codemirror/mode/jsx/jsx'),
+      import('codemirror/lib/codemirror.css'),
+      import('./codemirror-paraiso-dark.css'),
+    ]).then(([CodeMirror]) => this.install(CodeMirror));
+  }
+
+  install(CodeMirror) {
+    if (!this.textarea) {
+      return;
+    }
+
+    const {onChange} = this.props;
+
+    this.editor = CodeMirror.fromTextArea(this.textarea, {
+      mode: 'jsx',
+      theme: 'paraiso-dark',
+      lineNumbers: true,
+    });
+
+    this.editor.on('change', function(doc) {
+      onChange(doc.getValue());
+    });
+  }
+
+  componentWillUnmount() {
+    if (this.editor) {
+      this.editor.toTextArea();
+    }
+  }
+
+  render() {
+    return (
+      <textarea
+        ref={ref => (this.textarea = ref)}
+        defaultValue={this.props.code}
+        autoComplete="off"
+        hidden={true}
+      />
+    );
+  }
+}
+
+/**
+ * Prevent IE9 from raising an error on an unrecognized element:
+ * See https://github.com/facebook/react/issues/13610
+ */
+const supportsDetails = !(
+  document.createElement('details') instanceof HTMLUnknownElement
+);
+
+export class CodeError extends React.Component {
+  render() {
+    const {error, className} = this.props;
+
+    if (!error) {
+      return null;
+    }
+
+    if (supportsDetails) {
+      const [summary, ...body] = error.message.split(/\n+/g);
+
+      return (
+        <details className={className}>
+          <summary>{summary}</summary>
+          {body.join('\n')}
+        </details>
+      );
+    }
+
+    return <div className={className}>{error.message}</div>;
+  }
+}

fixtures/dom/src/components/fixtures/hydration/code-transformer.js

@@ -0,0 +1,18 @@
+/**
+ * Babel works across all browsers, however it requires many polyfills.
+ */
+
+import 'core-js/es6/weak-map';
+import 'core-js/es6/weak-set';
+import 'core-js/es6/number';
+import 'core-js/es6/string';
+import 'core-js/es6/array';
+import 'core-js/modules/es6.object.set-prototype-of';
+
+import {transform} from '@babel/standalone';
+
+const presets = ['es2015', 'stage-3', 'react'];
+
+export function compile(raw) {
+  return transform(raw, {presets}).code;
+}

fixtures/dom/src/components/fixtures/hydration/codemirror-paraiso-dark.css

@@ -0,0 +1,38 @@
+/**
+ * Name:       Paraíso (Dark)
+ * Author:     Jan T. Sott
+ * License:    Creative Commons Attribution-ShareAlike 4.0 Unported License.
+ *             https://creativecommons.org/licenses/by-sa/4.0/deed.en_US
+ *
+ * Color scheme by Jan T. Sott (https://github.com/idleberg/Paraiso-CodeMirror)
+ * Inspired by the art of Rubens LP (http://www.rubenslp.com.br)
+ */
+
+.cm-s-paraiso-dark.CodeMirror { background: #2f1e2e; color: #b9b6b0; }
+.cm-s-paraiso-dark div.CodeMirror-selected { background: #41323f; }
+.cm-s-paraiso-dark .CodeMirror-line::selection, .cm-s-paraiso-dark .CodeMirror-line > span::selection, .cm-s-paraiso-dark .CodeMirror-line > span > span::selection { background: rgba(65, 50, 63, .99); }
+.cm-s-paraiso-dark .CodeMirror-line::-moz-selection, .cm-s-paraiso-dark .CodeMirror-line > span::-moz-selection, .cm-s-paraiso-dark .CodeMirror-line > span > span::-moz-selection { background: rgba(65, 50, 63, .99); }
+.cm-s-paraiso-dark .CodeMirror-gutters { background: #2f1e2e; border-right: 0px; }
+.cm-s-paraiso-dark .CodeMirror-guttermarker { color: #ef6155; }
+.cm-s-paraiso-dark .CodeMirror-guttermarker-subtle { color: #776e71; }
+.cm-s-paraiso-dark .CodeMirror-linenumber { color: #776e71; }
+.cm-s-paraiso-dark .CodeMirror-cursor { border-left: 1px solid #8d8687; }
+
+.cm-s-paraiso-dark span.cm-comment { color: #e96ba8; }
+.cm-s-paraiso-dark span.cm-atom { color: #815ba4; }
+.cm-s-paraiso-dark span.cm-number { color: #815ba4; }
+
+.cm-s-paraiso-dark span.cm-property, .cm-s-paraiso-dark span.cm-attribute { color: #48b685; }
+.cm-s-paraiso-dark span.cm-keyword { color: #ef6155; }
+.cm-s-paraiso-dark span.cm-string { color: #fec418; }
+
+.cm-s-paraiso-dark span.cm-variable { color: #48b685; }
+.cm-s-paraiso-dark span.cm-variable-2 { color: #06b6ef; }
+.cm-s-paraiso-dark span.cm-def { color: #f99b15; }
+.cm-s-paraiso-dark span.cm-bracket { color: #b9b6b0; }
+.cm-s-paraiso-dark span.cm-tag { color: #ef6155; }
+.cm-s-paraiso-dark span.cm-link { color: #815ba4; }
+.cm-s-paraiso-dark span.cm-error { background: #ef6155; color: #8d8687; }
+
+.cm-s-paraiso-dark .CodeMirror-activeline-background { background: #4D344A; }
+.cm-s-paraiso-dark .CodeMirror-matchingbracket { text-decoration: underline; color: white !important; }

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

@@ -0,0 +1,22 @@
+export const SAMPLE_CODE = `
+class Fixture extends React.Component {
+  state = {
+    value: 'asdf'
+  }
+
+  onChange(event) {
+    this.setState({ value: event.target.value });
+  }
+
+  render() {
+    const { value } = this.state;
+
+    return (
+      <form>
+        <input value={value} onChange={this.onChange.bind(this)} />
+        <p>Value: {value}</p>
+      </form>
+    );
+  }
+}
+`.trim();

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

@@ -0,0 +1,68 @@
+.hydration {
+  background: #2f1e2e;
+  margin: 0;
+  position: relative;
+  height: calc(100vh - 40px); /* height of header */
+  overflow: auto;
+  padding-top: 32px;
+}
+
+.hydration-options {
+  background: #171717;
+  border-top: 1px dashed rgba(215, 235, 255, 0.12);
+  color: #def5ff;
+  height: 32px;
+  line-height: 28px;
+  padding: 0 8px;
+  width: 100%;
+  position: absolute;
+  top: 0;
+  left: 0;
+}
+
+.hydration-options label {
+  font-size: 13px;
+}
+
+.hydration-options input[type=checkbox] {
+  display: inline-block;
+  margin-right: 4px;
+  vertical-align: middle;
+}
+
+.hydration .CodeMirror {
+  font-size: 13px;
+  padding-top: 8px;
+  padding-bottom: 68px;
+  height: calc(100vh - 72px);
+  width: 55%;
+}
+
+.hydration-sandbox {
+  background: white;
+  border-radius: 2px;
+  border: 0;
+  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.54);
+  height: calc(100% - 34px);
+  position: absolute;
+  right: 16px;
+  top: 16px;
+  width: calc(45% - 24px);
+}
+
+.hydration-code-error {
+  background: #df3f3f;
+  border-radius: 2px;
+  bottom: 18px;
+  color: white;
+  font-family: monospace;
+  font-size: 13px;
+  left: 16px;
+  line-height: 1.25;
+  overflow: auto;
+  padding: 12px;
+  position: fixed;
+  white-space: pre;
+  max-width: calc(55% - 26px);
+  z-index: 10;
+}

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

@@ -0,0 +1,109 @@
+import './hydration.css';
+import {SAMPLE_CODE} from './data';
+import {CodeEditor, CodeError} from './Code';
+import {compile} from './code-transformer';
+import {reactPaths} from '../../../react-loader';
+import qs from 'query-string';
+
+const React = window.React;
+
+class Hydration extends React.Component {
+  state = {
+    error: null,
+    code: SAMPLE_CODE,
+    hydrate: true,
+  };
+
+  ready = false;
+
+  componentDidMount() {
+    window.addEventListener('message', this.handleMessage);
+  }
+
+  componentWillUnmount() {
+    window.removeEventListener('message', this.handleMessage);
+  }
+
+  handleMessage = event => {
+    var data = JSON.parse(event.data);
+
+    switch (data.type) {
+      case 'ready':
+        this.ready = true;
+        this.injectCode();
+        break;
+      default:
+        throw new Error(
+          'Editor Error: Unrecognized message "' + data.type + '"'
+        );
+    }
+  };
+
+  injectCode = () => {
+    try {
+      this.send({
+        type: 'code',
+        payload: compile(this.state.code),
+      });
+
+      this.setState({error: null});
+    } catch (error) {
+      this.setState({error});
+    }
+  };
+
+  send = message => {
+    if (this.ready) {
+      this.frame.contentWindow.postMessage(JSON.stringify(message), '*');
+    }
+  };
+
+  setFrame = frame => {
+    this.frame = frame;
+  };
+
+  setCode = code => {
+    this.setState({code}, this.injectCode);
+  };
+
+  setCheckbox = event => {
+    this.setState({
+      [event.target.name]: event.target.checked,
+    });
+  };
+
+  render() {
+    const {code, error, hydrate} = this.state;
+    const src = '/renderer.html?' + qs.stringify({hydrate, ...reactPaths()});
+
+    return (
+      <div className="hydration">
+        <header className="hydration-options">
+          <label htmlFor="hydrate">
+            <input
+              id="hydrate"
+              name="hydrate"
+              type="checkbox"
+              checked={hydrate}
+              onChange={this.setCheckbox}
+            />
+            Auto-Hydrate
+          </label>
+        </header>
+
+        <CodeEditor code={code} onChange={this.setCode} />
+
+        <CodeError error={error} className="hydration-code-error" />
+
+        <iframe
+          ref={this.setFrame}
+          className="hydration-sandbox"
+          title="Hydration Preview"
+          src={src}
+        />
+      </div>
+    );
+  }
+}
+
+export default Hydration;

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

@@ -1,60 +1,62 @@
-import RangeInputFixtures from './range-inputs';
-import TextInputFixtures from './text-inputs';
-import SelectFixtures from './selects';
-import TextAreaFixtures from './textareas';
-import InputChangeEvents from './input-change-events';
-import NumberInputFixtures from './number-inputs';
-import PasswordInputFixtures from './password-inputs';
-import ButtonFixtures from './buttons';
-import DateInputFixtures from './date-inputs';
-import ErrorHandling from './error-handling';
-import EventPooling from './event-pooling';
-import CustomElementFixtures from './custom-elements';
-import MediaEventsFixtures from './media-events';
-import PointerEventsFixtures from './pointer-events';
-import MouseEventsFixtures from './mouse-events';
-
 const React = window.React;
+const fixturePath = window.location.pathname;
 
 /**
  * A simple routing component that renders the appropriate
  * fixture based on the location pathname.
  */
-function FixturesPage() {
-  switch (window.location.pathname) {
-    case '/text-inputs':
-      return <TextInputFixtures />;
-    case '/range-inputs':
-      return <RangeInputFixtures />;
-    case '/selects':
-      return <SelectFixtures />;
-    case '/textareas':
-      return <TextAreaFixtures />;
-    case '/input-change-events':
-      return <InputChangeEvents />;
-    case '/number-inputs':
-      return <NumberInputFixtures />;
-    case '/password-inputs':
-      return <PasswordInputFixtures />;
-    case '/buttons':
-      return <ButtonFixtures />;
-    case '/date-inputs':
-      return <DateInputFixtures />;
-    case '/error-handling':
-      return <ErrorHandling />;
-    case '/event-pooling':
-      return <EventPooling />;
-    case '/custom-elements':
-      return <CustomElementFixtures />;
-    case '/media-events':
-      return <MediaEventsFixtures />;
-    case '/pointer-events':
-      return <PointerEventsFixtures />;
-    case '/mouse-events':
-      return <MouseEventsFixtures />;
-    default:
-      return <p>Please select a test fixture.</p>;
+class FixturesPage extends React.Component {
+  static defaultProps = {
+    fixturePath: fixturePath === '/' ? '/home' : fixturePath,
+  };
+
+  state = {
+    isLoading: true,
+    error: null,
+    Fixture: null,
+  };
+
+  componentDidMount() {
+    this.loadFixture();
+  }
+
+  async loadFixture() {
+    const {fixturePath} = this.props;
+
+    try {
+      const module = await import(`.${fixturePath}`);
+
+      this.setState({Fixture: module.default});
+    } catch (error) {
+      console.error(error);
+      this.setState({error});
+    } finally {
+      this.setState({isLoading: false});
+    }
+  }
+
+  render() {
+    const {Fixture, error, isLoading} = this.state;
+
+    if (isLoading) {
+      return null;
+    }
+
+    if (error) {
+      return <FixtureError error={error} />;
+    }
+
+    return <Fixture />;
   }
 }
 
+function FixtureError({error}) {
+  return (
+    <section>
+      <h2>Error loading fixture</h2>
+      <p>{error.message}</p>
+    </section>
+  );
+}
+
 export default FixturesPage;

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

@@ -60,7 +60,7 @@ export default class MediaEvents extends React.Component {
     }, {});
 
     return (
-      <FixtureSet title="Media Events" description="">
+      <FixtureSet title="Media Events">
         <TestCase
           title="Event bubbling"
           description="Media events should synthetically bubble">

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

@@ -6,7 +6,7 @@ const React = window.React;
 class MouseEvents extends React.Component {
   render() {
     return (
-      <FixtureSet title="Mouse Events" description="">
+      <FixtureSet title="Mouse Events">
         <MouseMovement />
       </FixtureSet>
     );

fixtures/dom/src/components/fixtures/password-inputs/index.js

@@ -6,7 +6,7 @@ const React = window.React;
 
 function NumberInputs() {
   return (
-    <FixtureSet title="Password inputs" description="">
+    <FixtureSet title="Password inputs">
       <TestCase
         title="The show password icon"
         description={`

fixtures/dom/src/components/fixtures/range-inputs/index.js

@@ -1,3 +1,5 @@
+import FixtureSet from '../../FixtureSet';
+
 const React = window.React;
 
 class RangeInputs extends React.Component {
@@ -7,22 +9,26 @@ class RangeInputs extends React.Component {
   };
   render() {
     return (
-      <form>
-        <fieldset>
-          <legend>Controlled</legend>
-          <input
-            type="range"
-            value={this.state.value}
-            onChange={this.onChange}
-          />
-          <span className="hint">Value: {this.state.value}</span>
-        </fieldset>
+      <FixtureSet
+        title="Range Inputs"
+        description="Note: Range inputs are not supported in IE9.">
+        <form>
+          <fieldset>
+            <legend>Controlled</legend>
+            <input
+              type="range"
+              value={this.state.value}
+              onChange={this.onChange}
+            />
+            <span className="hint">Value: {this.state.value}</span>
+          </fieldset>
 
-        <fieldset>
-          <legend>Uncontrolled</legend>
-          <input type="range" defaultValue={0.5} />
-        </fieldset>
-      </form>
+          <fieldset>
+            <legend>Uncontrolled</legend>
+            <input type="range" defaultValue={0.5} />
+          </fieldset>
+        </form>
+      </FixtureSet>
     );
   }
 }

fixtures/dom/src/components/fixtures/selection-events/OnSelectEventTestCase.js

@@ -0,0 +1,50 @@
+import TestCase from '../../TestCase';
+import Iframe from '../../Iframe';
+const React = window.React;
+
+class OnSelectIframe extends React.Component {
+  state = {count: 0, value: 'Select Me!'};
+
+  _onSelect = event => {
+    this.setState(({count}) => ({count: count + 1}));
+  };
+
+  _onChange = event => {
+    this.setState({value: event.target.value});
+  };
+
+  render() {
+    const {count, value} = this.state;
+    return (
+      <Iframe height={60}>
+        Selection Event Count: {count}
+        <input
+          type="text"
+          onSelect={this._onSelect}
+          value={value}
+          onChange={this._onChange}
+        />
+      </Iframe>
+    );
+  }
+}
+
+export default class OnSelectEventTestCase extends React.Component {
+  render() {
+    return (
+      <TestCase
+        title="onSelect events within iframes"
+        description="onSelect events should fire for elements rendered inside iframes">
+        <TestCase.Steps>
+          <li>Highlight some of the text in the input below</li>
+          <li>Move the cursor around using the arrow keys</li>
+        </TestCase.Steps>
+        <TestCase.ExpectedResult>
+          The displayed count should increase as you highlight or move the
+          cursor
+        </TestCase.ExpectedResult>
+        <OnSelectIframe />
+      </TestCase>
+    );
+  }
+}

fixtures/dom/src/components/fixtures/selection-events/ReorderedInputsTestCase.js

@@ -0,0 +1,44 @@
+import TestCase from '../../TestCase';
+import Iframe from '../../Iframe';
+const React = window.React;
+
+export default class ReorderedInputsTestCase extends React.Component {
+  state = {count: 0};
+
+  componentDidMount() {
+    this.interval = setInterval(() => {
+      this.setState({count: this.state.count + 1});
+    }, 2000);
+  }
+
+  componentWillUnmount() {
+    clearInterval(this.interval);
+  }
+
+  renderInputs() {
+    const inputs = [
+      <input key={1} defaultValue="Foo" />,
+      <input key={2} defaultValue="Bar" />,
+    ];
+    if (this.state.count % 2 === 0) {
+      inputs.reverse();
+    }
+    return inputs;
+  }
+
+  render() {
+    return (
+      <TestCase title="Reordered input elements in iframes" description="">
+        <TestCase.Steps>
+          <li>The two inputs below swap positions every two seconds</li>
+          <li>Select the text in either of them</li>
+          <li>Wait for the swap to occur</li>
+        </TestCase.Steps>
+        <TestCase.ExpectedResult>
+          The selection you made should be maintained
+        </TestCase.ExpectedResult>
+        <Iframe height={50}>{this.renderInputs()}</Iframe>
+      </TestCase>
+    );
+  }
+}

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

@@ -0,0 +1,19 @@
+import FixtureSet from '../../FixtureSet';
+import ReorderedInputsTestCase from './ReorderedInputsTestCase';
+import OnSelectEventTestCase from './OnSelectEventTestCase';
+const React = window.React;
+
+export default function SelectionEvents() {
+  return (
+    <FixtureSet
+      title="Selection Restoration"
+      description="
+      When React commits changes it may perform operations which cause existing
+      selection state to be lost. This is manually managed by reading the
+      selection state before commits and then restoring it afterwards.
+      ">
+      <ReorderedInputsTestCase />
+      <OnSelectEventTestCase />
+    </FixtureSet>
+  );
+}

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

@@ -46,7 +46,7 @@ class SelectFixture extends React.Component {
 
   render() {
     return (
-      <FixtureSet title="Selects" description="">
+      <FixtureSet title="Selects">
         <form className="field-group">
           <fieldset>
             <legend>Controlled</legend>
@@ -158,6 +158,50 @@ class SelectFixture extends React.Component {
             </form>
           </div>
         </TestCase>
+
+        <TestCase title="A multiple select being scrolled to first selected option">
+          <TestCase.ExpectedResult>
+            First selected option should be visible
+          </TestCase.ExpectedResult>
+
+          <div className="test-fixture">
+            <form>
+              <select multiple defaultValue={['tiger']}>
+                <option value="gorilla">gorilla</option>
+                <option value="giraffe">giraffe</option>
+                <option value="monkey">monkey</option>
+                <option value="lion">lion</option>
+                <option value="mongoose">mongoose</option>
+                <option value="tiger">tiget</option>
+              </select>
+            </form>
+          </div>
+        </TestCase>
+
+        <TestCase
+          title="An option which contains conditional render fails"
+          relatedIssues="11911">
+          <TestCase.Steps>
+            <li>Select any option</li>
+          </TestCase.Steps>
+          <TestCase.ExpectedResult>
+            Option should be set
+          </TestCase.ExpectedResult>
+
+          <div className="test-fixture">
+            <select value={this.state.value} onChange={this.onChange}>
+              <option value="red">
+                red {this.state.value === 'red' && 'is chosen '} TextNode
+              </option>
+              <option value="blue">
+                blue {this.state.value === 'blue' && 'is chosen '} TextNode
+              </option>
+              <option value="green">
+                green {this.state.value === 'green' && 'is chosen '} TextNode
+              </option>
+            </select>
+          </div>
+        </TestCase>
       </FixtureSet>
     );
   }

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

@@ -0,0 +1,321 @@
+import Fixture from '../../Fixture';
+import FixtureSet from '../../FixtureSet';
+import TestCase from '../../TestCase';
+
+const React = window.React;
+const ReactDOM = window.ReactDOM;
+
+const Suspense = React.Suspense;
+
+let cache = new Set();
+
+function AsyncStep({text, ms}) {
+  if (!cache.has(text)) {
+    throw new Promise(resolve =>
+      setTimeout(() => {
+        cache.add(text);
+        resolve();
+      }, ms)
+    );
+  }
+  return null;
+}
+
+let suspendyTreeIdCounter = 0;
+class SuspendyTreeChild extends React.Component {
+  id = suspendyTreeIdCounter++;
+  state = {
+    step: 1,
+    isHidden: false,
+  };
+  increment = () => this.setState(s => ({step: s.step + 1}));
+
+  componentDidMount() {
+    document.addEventListener('keydown', this.onKeydown);
+  }
+
+  componentWillUnmount() {
+    document.removeEventListener('keydown', this.onKeydown);
+  }
+
+  onKeydown = event => {
+    if (event.metaKey && event.key === 'Enter') {
+      this.increment();
+    }
+  };
+
+  render() {
+    return (
+      <React.Fragment>
+        <Suspense fallback={<div>(display: none)</div>}>
+          <div>
+            <AsyncStep text={`${this.state.step} + ${this.id}`} ms={500} />
+            {this.props.children}
+          </div>
+        </Suspense>
+        <button onClick={this.increment}>Hide</button>
+      </React.Fragment>
+    );
+  }
+}
+
+class SuspendyTree extends React.Component {
+  parentContainer = React.createRef(null);
+  container = React.createRef(null);
+  componentDidMount() {
+    this.setState({});
+    document.addEventListener('keydown', this.onKeydown);
+  }
+  componentWillUnmount() {
+    document.removeEventListener('keydown', this.onKeydown);
+  }
+  onKeydown = event => {
+    if (event.metaKey && event.key === '/') {
+      this.removeAndRestore();
+    }
+  };
+  removeAndRestore = () => {
+    const parentContainer = this.parentContainer.current;
+    const container = this.container.current;
+    parentContainer.removeChild(container);
+    parentContainer.textContent = '(removed from DOM)';
+    setTimeout(() => {
+      parentContainer.textContent = '';
+      parentContainer.appendChild(container);
+    }, 500);
+  };
+  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>
+    );
+  }
+}
+
+class TextInputFixtures extends React.Component {
+  render() {
+    return (
+      <FixtureSet
+        title="Suspense"
+        description="Preserving the state of timed-out children">
+        <p>
+          Clicking "Hide" will hide the fixture context using{' '}
+          <code>display: none</code> for 0.5 seconds, then restore. This is the
+          built-in behavior for timed-out children. Each fixture tests whether
+          the state of the DOM is preserved. Clicking "Remove" will remove the
+          fixture content from the DOM for 0.5 seconds, then restore. This is{' '}
+          <strong>not</strong> how timed-out children are hidden, but is
+          included for comparison purposes.
+        </p>
+        <div className="footnote">
+          As a shortcut, you can use Command + Enter (or Control + Enter on
+          Windows, Linux) to "Hide" all the fixtures, or Command + / to "Remove"
+          them.
+        </div>
+        <TestCase title="Text selection where entire range times out">
+          <TestCase.Steps>
+            <li>Use your cursor to select the text below.</li>
+            <li>Click "Hide" or "Remove".</li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            Text selection is preserved when hiding, but not when removing.
+          </TestCase.ExpectedResult>
+
+          <Fixture>
+            <SuspendyTree>
+              Select this entire sentence (and only this sentence).
+            </SuspendyTree>
+          </Fixture>
+        </TestCase>
+        <TestCase title="Text selection that extends outside timed-out subtree">
+          <TestCase.Steps>
+            <li>
+              Use your cursor to select a range that includes both the text and
+              the "Go" button.
+            </li>
+            <li>Click "Hide" or "Remove".</li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            Text selection is preserved when hiding, but not when removing.
+          </TestCase.ExpectedResult>
+
+          <Fixture>
+            <SuspendyTree>
+              Select a range that includes both this sentence and the "Go"
+              button.
+            </SuspendyTree>
+          </Fixture>
+        </TestCase>
+        <TestCase title="Focus">
+          <TestCase.Steps>
+            <li>
+              Use your cursor to select a range that includes both the text and
+              the "Go" button.
+            </li>
+            <li>
+              Intead of clicking "Go", which switches focus, press Command +
+              Enter (or Control + Enter on Windows, Linux).
+            </li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            The ideal behavior is that the focus would not be lost, but
+            currently it is (both when hiding and removing).
+          </TestCase.ExpectedResult>
+
+          <Fixture>
+            <SuspendyTree>
+              <button>Focus me</button>
+            </SuspendyTree>
+          </Fixture>
+        </TestCase>
+        <TestCase title="Uncontrolled form input">
+          <TestCase.Steps>
+            <li>Type something ("Hello") into the text input.</li>
+            <li>Click "Hide" or "Remove".</li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            Input is preserved when hiding, but not when removing.
+          </TestCase.ExpectedResult>
+
+          <Fixture>
+            <SuspendyTree>
+              <input type="text" />
+            </SuspendyTree>
+          </Fixture>
+        </TestCase>
+        <TestCase title="Image flicker">
+          <TestCase.Steps>
+            <li>Click "Hide" or "Remove".</li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            The image should reappear without flickering. The text should not
+            reflow.
+          </TestCase.ExpectedResult>
+
+          <Fixture>
+            <SuspendyTree>
+              <img src="https://upload.wikimedia.org/wikipedia/commons/e/ee/Atom_%282%29.png" />React
+              is cool
+            </SuspendyTree>
+          </Fixture>
+        </TestCase>
+        <TestCase title="Iframe">
+          <TestCase.Steps>
+            <li>
+              The iframe shows a nested version of this fixtures app. Navigate
+              to the "Text inputs" page.
+            </li>
+            <li>Select one of the checkboxes.</li>
+            <li>Click "Hide" or "Remove".</li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            When removing, the iframe is reloaded. When hiding, the iframe
+            should still be on the "Text inputs" page. The checkbox should still
+            be checked. (Unfortunately, scroll position is lost.)
+          </TestCase.ExpectedResult>
+
+          <Fixture>
+            <SuspendyTree>
+              <iframe width="500" height="300" src="/" />
+            </SuspendyTree>
+          </Fixture>
+        </TestCase>
+        <TestCase title="Video playback">
+          <TestCase.Steps>
+            <li>Start playing the video, or seek to a specific position.</li>
+            <li>Click "Hide" or "Remove".</li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            The playback position should stay the same. When hiding, the video
+            plays in the background for the entire duration. When removing, the
+            video stops playing, but the position is not lost.
+          </TestCase.ExpectedResult>
+
+          <Fixture>
+            <SuspendyTree>
+              <video controls>
+                <source
+                  src="http://techslides.com/demos/sample-videos/small.webm"
+                  type="video/webm"
+                />
+                <source
+                  src="http://techslides.com/demos/sample-videos/small.ogv"
+                  type="video/ogg"
+                />
+                <source
+                  src="http://techslides.com/demos/sample-videos/small.mp4"
+                  type="video/mp4"
+                />
+                <source
+                  src="http://techslides.com/demos/sample-videos/small.3gp"
+                  type="video/3gp"
+                />
+              </video>
+            </SuspendyTree>
+          </Fixture>
+        </TestCase>
+        <TestCase title="Audio playback">
+          <TestCase.Steps>
+            <li>Start playing the audio, or seek to a specific position.</li>
+            <li>Click "Hide" or "Remove".</li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            The playback position should stay the same. When hiding, the audio
+            plays in the background for the entire duration. When removing, the
+            audio stops playing, but the position is not lost.
+          </TestCase.ExpectedResult>
+          <Fixture>
+            <SuspendyTree>
+              <audio controls={true}>
+                <source src="https://upload.wikimedia.org/wikipedia/commons/e/ec/Mozart_K448.ogg" />
+              </audio>
+            </SuspendyTree>
+          </Fixture>
+        </TestCase>
+        <TestCase title="Scroll position">
+          <TestCase.Steps>
+            <li>Scroll to a position in the list.</li>
+            <li>Click "Hide" or "Remove".</li>
+          </TestCase.Steps>
+
+          <TestCase.ExpectedResult>
+            Scroll position is preserved when hiding, but not when removing.
+          </TestCase.ExpectedResult>
+          <Fixture>
+            <SuspendyTree>
+              <div style={{height: 200, overflow: 'scroll'}}>
+                {Array(20)
+                  .fill()
+                  .map((_, i) => <h2 key={i}>{i + 1}</h2>)}
+              </div>
+            </SuspendyTree>
+          </Fixture>
+        </TestCase>
+      </FixtureSet>
+    );
+  }
+}
+
+export default TextInputFixtures;

fixtures/dom/src/polyfills.js

@@ -1,3 +1,4 @@
+import 'core-js/es6/symbol';
 import 'core-js/es6/promise';
 import 'core-js/es6/set';
 import 'core-js/es6/map';

fixtures/dom/src/react-loader.js

@@ -1,3 +1,5 @@
+import semver from 'semver';
+
 /**
  * Take a version from the window query string and load a specific
  * version of React.
@@ -34,36 +36,51 @@ function loadScript(src) {
   });
 }
 
-export default function loadReact() {
-  let REACT_PATH = 'react.development.js';
-  let DOM_PATH = 'react-dom.development.js';
+export function reactPaths() {
+  let reactPath = 'react.development.js';
+  let reactDOMPath = 'react-dom.development.js';
+  let reactDOMServerPath = 'react-dom-server.browser.development.js';
 
   let query = parseQuery(window.location.search);
   let version = query.version || 'local';
 
   if (version !== 'local') {
+    const {major, minor, prerelease} = semver(version);
+    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 (parseInt(version, 10) >= 16 && version.indexOf('alpha') < 0) {
-      REACT_PATH =
+    if (major >= 16 && !(minor === 0 && preReleaseStage === 'alpha')) {
+      reactPath =
         'https://unpkg.com/react@' + version + '/umd/react.development.js';
-      DOM_PATH =
+      reactDOMPath =
         'https://unpkg.com/react-dom@' +
         version +
         '/umd/react-dom.development.js';
+      reactDOMServerPath =
+        'https://unpkg.com/react-dom@' +
+        version +
+        '/umd/react-dom-server.browser.development';
     } else {
-      REACT_PATH = 'https://unpkg.com/react@' + version + '/dist/react.js';
-      DOM_PATH =
+      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';
     }
   }
 
   const needsReactDOM = version === 'local' || parseFloat(version, 10) > 0.13;
 
-  let request = loadScript(REACT_PATH);
+  return {reactPath, reactDOMPath, reactDOMServerPath, needsReactDOM};
+}
+
+export default function loadReact() {
+  const {reactPath, reactDOMPath, needsReactDOM} = reactPaths();
+
+  let request = loadScript(reactPath);
 
   if (needsReactDOM) {
-    request = request.then(() => loadScript(DOM_PATH));
+    request = request.then(() => loadScript(reactDOMPath));
   } else {
     // Aliasing React to ReactDOM for compatibility.
     request = request.then(() => {

fixtures/dom/src/style.css

@@ -4,14 +4,13 @@
   box-sizing: border-box;
 }
 
-html {
-  font-size: 10px;
-}
 body {
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen",
+  color: #333;
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Arimo", "Roboto", "Oxygen",
     "Ubuntu", "Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue",
     sans-serif;
-  font-size: 1.4rem;
+  font-size: 15px;
+  line-height: 24px;
   margin: 0;
   padding: 0;
 }
@@ -26,23 +25,82 @@ button {
   padding: 6px 8px;
 }
 
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+  color: #171717;
+  font-weight: 600;
+}
+
+h1 {
+  font-size: 32px;
+  margin: 24px 0;
+}
+
+h2 {
+  font-size: 24px;
+  margin: 24px 0 16px;
+}
+
+h3 {
+  font-size: 18px;
+  margin: 8px 0 16px;
+}
+
+h4, h5, h6 {
+  font-size: 16px;
+  margin: 0 0 16px;
+}
+
+code {
+  font-size: 90%;
+}
+
+a {
+  text-decoration: none;
+}
+
+a:link:hover,
+a:link:focus {
+  text-decoration: underline;
+}
+
+textarea {
+  border-radius: 2px;
+  border: 1px solid #d9d9d9;
+  font-size: 12px;
+  min-height: 100px;
+  min-width: 300px;
+  padding: 8px;
+}
+
 .header {
-  background: #222;
-  box-shadow: inset 0 -1px 3px #000;
-  font-size: 1.6rem;
-  line-height: 3.2rem;
+  background: #171717;
   overflow: hidden;
-  padding: .8rem 1.6rem;
+  padding: 8px;
+}
+
+.header a {
+  text-decoration: none;
+  color: white;
+}
+
+.header a:hover,
+.header a:focus{
+  text-decoration: underline;
 }
 
 .header select {
-  width: 12rem;
+  margin-left: 8px;
+  max-width: 150px;
 }
 
 .header__inner {
   display: table;
   margin: 0 auto;
-  max-width: 1000px;
   overflow: hidden;
   text-align: center;
   width: 100%;
@@ -108,11 +166,11 @@ fieldset {
 
 ul,
 ol {
-  margin: 0 0 2rem 0;
+  margin: 0 0 16px 0;
 }
 
-li {
-  margin-bottom: 0.4rem;
+p {
+  margin: 16px 0;
 }
 
 .type-subheading {
@@ -130,11 +188,10 @@ li {
 .footnote {
   border-left: 4px solid #aaa;
   color: #444;
+  font-size: 14px;
   font-style: italic;
-  line-height: 1.5;
-  margin-bottom: 2.4rem;
-  margin-left: 0.4rem;
-  padding-left: 1.6rem;
+  margin-left: 8px;
+  padding-left: 16px;
 }
 
 .test-case {
@@ -158,7 +215,7 @@ li {
 }
 
 .test-case__body {
-  padding: 0 15px;
+  padding: 10px;
 }
 
 .test-case__desc {
@@ -222,3 +279,24 @@ li {
 .field-group {
   overflow: hidden;
 }
+
+table {
+  border: 1px solid #d9d9d9;
+  border-width: 1px 1px 1px 0;
+  border-collapse: collapse;
+  margin: 16px 0;
+  font-size: 14px;
+  line-height: 20px;
+  width: 100%;
+}
+
+td,
+th {
+  text-align: left;
+  border: 1px solid #d9d9d9;
+  padding: 6px;
+}
+
+tbody tr:nth-child(even) {
+  background: #f0f0f0;
+}

fixtures/dom/src/tags.js

@@ -52,7 +52,9 @@ export default function getVersionTags() {
       cachedTags = JSON.parse(cachedTags);
       resolve(cachedTags);
     } else {
-      fetch('https://api.github.com/repos/facebook/react/tags', {mode: 'cors'})
+      fetch('https://api.github.com/repos/facebook/react/tags?per_page=1000', {
+        mode: 'cors',
+      })
         .then(res => res.json())
         .then(tags => {
           // A message property indicates an error was sent from the API

fixtures/dom/yarn.lock

@@ -2,6 +2,10 @@
 # yarn lockfile v1
 
 
+"@babel/standalone@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/standalone/-/standalone-7.0.0.tgz#856446641620c1c5f0ca775621d478324ebd1f52"
+
 abab@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/abab/-/abab-1.0.3.tgz#b81de5f7274ec4e756d797cd834f303642724e5d"
@@ -1556,6 +1560,10 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
+codemirror@^5.40.0:
+  version "5.40.0"
+  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.40.0.tgz#2f5ed47366e514f41349ba0fe34daaa39be4e257"
+
 color-convert@^1.3.0:
   version "1.8.2"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.8.2.tgz#be868184d7c8631766d54e7078e2672d7c7e3339"
@@ -5878,6 +5886,10 @@ semver@^5.0.3:
   version "5.4.1"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.4.1.tgz#e059c09d8571f0540823733433505d3a2f00b18e"
 
+semver@^5.5.0:
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.5.0.tgz#dc4bbc7a6ca9d916dee5d43516f0092b58f7b8ab"
+
 send@0.14.1:
   version "0.14.1"
   resolved "https://registry.yarnpkg.com/send/-/send-0.14.1.tgz#a954984325392f51532a7760760e459598c89f7a"

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 markAsCurent(id) {
+  function markAsCurrent(id) {
     currentIDs.add(id);
     const fiber = descriptions[id];
     if (fiber.sibling) {
-      markAsCurent(fiber.sibling);
+      markAsCurrent(fiber.sibling);
     }
     if (fiber.child) {
-      markAsCurent(fiber.child);
+      markAsCurrent(fiber.child);
     }
   }
-  markAsCurent(rootID);
+  markAsCurrent(rootID);
 
   return {
     descriptions,

fixtures/packaging/browserify/dev/package.json

@@ -2,11 +2,10 @@
   "private": true,
   "name": "browserify-dev-fixture",
   "dependencies": {
-    "browserify": "^13.3.0",
-    "react": "link:../../../../build/node_modules/react",
-    "react-dom": "link:../../../../build/node_modules/react-dom"
+    "browserify": "^13.3.0"
   },
   "scripts": {
-    "build": "rm -f output.js && browserify ./input.js -o output.js"
+    "build": "rm -f output.js && browserify ./input.js -o output.js",
+    "prebuild": "cp -r ../../../../build/node_modules/* ./node_modules/"
   }
 }

fixtures/packaging/browserify/dev/yarn.lock

@@ -25,10 +25,6 @@ array-reduce@~0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/array-reduce/-/array-reduce-0.0.0.tgz#173899d3ffd1c7d9383e4479525dbe278cab5f2b"
 
-asap@~2.0.3:
-  version "2.0.6"
-  resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
-
 asn1.js@^4.0.0:
   version "4.9.1"
   resolved "https://registry.yarnpkg.com/asn1.js/-/asn1.js-4.9.1.tgz#48ba240b45a9280e94748990ba597d216617fd40"
@@ -254,10 +250,6 @@ convert-source-map@~1.1.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.1.3.tgz#4829c877e9fe49b3161f3bf3673888e204699860"
 
-core-js@^1.0.0:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
-
 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"
@@ -365,12 +357,6 @@ elliptic@^6.0.0:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.0"
 
-encoding@^0.1.11:
-  version "0.1.12"
-  resolved "https://registry.yarnpkg.com/encoding/-/encoding-0.1.12.tgz#538b66f3ee62cd1ab51ec323829d1f9480c74beb"
-  dependencies:
-    iconv-lite "~0.4.13"
-
 events@~1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/events/-/events-1.1.1.tgz#9ebdb7635ad099c70dcc4c2a1f5004288e8bd924"
@@ -382,18 +368,6 @@ evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
     md5.js "^1.3.4"
     safe-buffer "^5.1.1"
 
-fbjs@^0.8.16:
-  version "0.8.16"
-  resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.16.tgz#5e67432f550dc41b572bf55847b8aca64e5337db"
-  dependencies:
-    core-js "^1.0.0"
-    isomorphic-fetch "^2.1.1"
-    loose-envify "^1.0.0"
-    object-assign "^4.1.0"
-    promise "^7.1.1"
-    setimmediate "^1.0.5"
-    ua-parser-js "^0.7.9"
-
 fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
@@ -455,10 +429,6 @@ https-browserify@~0.0.0:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-0.0.1.tgz#3f91365cabe60b77ed0ebba24b454e3e09d95a82"
 
-iconv-lite@~0.4.13:
-  version "0.4.19"
-  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
-
 ieee754@^1.1.4:
   version "1.1.8"
   resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.8.tgz#be33d40ac10ef1926701f6f08a2d86fbfd1ad3e4"
@@ -505,10 +475,6 @@ is-buffer@^1.1.0:
   version "1.1.5"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.5.tgz#1f3b26ef613b214b88cbca23cc6c01d87961eecc"
 
-is-stream@^1.0.1:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
-
 isarray@^1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -517,17 +483,6 @@ isarray@~0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
 
-isomorphic-fetch@^2.1.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/isomorphic-fetch/-/isomorphic-fetch-2.2.1.tgz#611ae1acf14f5e81f729507472819fe9733558a9"
-  dependencies:
-    node-fetch "^1.0.1"
-    whatwg-fetch ">=0.10.0"
-
-js-tokens@^3.0.0:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
-
 json-stable-stringify@~0.0.0:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/json-stable-stringify/-/json-stable-stringify-0.0.1.tgz#611c23e814db375527df851193db59dd2af27f45"
@@ -560,12 +515,6 @@ lodash.memoize@~3.0.3:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-3.0.4.tgz#2dcbd2c287cbc0a55cc42328bd0c736150d53e3f"
 
-loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.1.tgz#d1a8ad33fa9ce0e713d65fdd0ac8b748d478c848"
-  dependencies:
-    js-tokens "^3.0.0"
-
 md5.js@^1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/md5.js/-/md5.js-1.3.4.tgz#e9bdbde94a20a5ac18b04340fc5764d5b09d901d"
@@ -618,17 +567,6 @@ module-deps@^4.0.8:
     through2 "^2.0.0"
     xtend "^4.0.0"
 
-node-fetch@^1.0.1:
-  version "1.7.3"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
-  dependencies:
-    encoding "^0.1.11"
-    is-stream "^1.0.1"
-
-object-assign@^4.1.0, object-assign@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
-
 once@^1.3.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
@@ -693,20 +631,6 @@ process@~0.11.0:
   version "0.11.10"
   resolved "https://registry.yarnpkg.com/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
 
-promise@^7.1.1:
-  version "7.3.1"
-  resolved "https://registry.yarnpkg.com/promise/-/promise-7.3.1.tgz#064b72602b18f90f29192b8b1bc418ffd1ebd3bf"
-  dependencies:
-    asap "~2.0.3"
-
-prop-types@^15.6.0:
-  version "15.6.0"
-  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.0.tgz#ceaf083022fc46b4a35f69e13ef75aed0d639856"
-  dependencies:
-    fbjs "^0.8.16"
-    loose-envify "^1.3.1"
-    object-assign "^4.1.1"
-
 public-encrypt@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/public-encrypt/-/public-encrypt-4.0.0.tgz#39f699f3a46560dd5ebacbca693caf7c65c18cc6"
@@ -739,14 +663,6 @@ randombytes@^2.0.0, randombytes@^2.0.1:
   dependencies:
     safe-buffer "^5.1.0"
 
-"react-dom@link:../../../../build/node_modules/react-dom":
-  version "0.0.0"
-  uid ""
-
-"react@link:../../../../build/node_modules/react":
-  version "0.0.0"
-  uid ""
-
 read-only-stream@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/read-only-stream/-/read-only-stream-2.0.0.tgz#2724fd6a8113d73764ac288d4386270c1dbf17f0"
@@ -797,10 +713,6 @@ safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0,
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
-setimmediate@^1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.5.tgz#290cbb232e306942d7d7ea9b83732ab7856f8285"
-
 sha.js@^2.4.0, sha.js@^2.4.8, sha.js@~2.4.4:
   version "2.4.9"
   resolved "https://registry.yarnpkg.com/sha.js/-/sha.js-2.4.9.tgz#98f64880474b74f4a38b8da9d3c0f2d104633e7d"
@@ -910,10 +822,6 @@ typedarray@~0.0.5:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-ua-parser-js@^0.7.9:
-  version "0.7.17"
-  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.17.tgz#e9ec5f9498b9ec910e7ae3ac626a805c4d09ecac"
-
 umd@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/umd/-/umd-3.0.1.tgz#8ae556e11011f63c2596708a8837259f01b3d60e"
@@ -941,10 +849,6 @@ vm-browserify@~0.0.1:
   dependencies:
     indexof "0.0.1"
 
-whatwg-fetch@>=0.10.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.3.tgz#9c84ec2dcf68187ff00bc64e1274b442176e1c84"
-
 wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"

fixtures/packaging/browserify/prod/package.json

@@ -2,12 +2,11 @@
   "private": true,
   "name": "browserify-prod-fixture",
   "dependencies": {
-    "browserify": "^13.3.0",
-    "react": "link:../../../../build/node_modules/react",
-    "react-dom": "link:../../../../build/node_modules/react-dom"
+    "browserify": "^13.3.0"
   },
   "scripts": {
-    "build": "rm -f output.js && browserify ./input.js -g [envify --NODE_ENV 'production'] -o output.js"
+    "build": "rm -f output.js && browserify ./input.js -g [envify --NODE_ENV 'production'] -o output.js",
+    "prebuild": "cp -r ../../../../build/node_modules/* ./node_modules/"
   },
   "devDependencies": {
     "envify": "^4.0.0"

fixtures/packaging/browserify/prod/yarn.lock

@@ -25,10 +25,6 @@ array-reduce@~0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/array-reduce/-/array-reduce-0.0.0.tgz#173899d3ffd1c7d9383e4479525dbe278cab5f2b"
 
-asap@~2.0.3:
-  version "2.0.6"
-  resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
-
 asn1.js@^4.0.0:
   version "4.9.1"
   resolved "https://registry.yarnpkg.com/asn1.js/-/asn1.js-4.9.1.tgz#48ba240b45a9280e94748990ba597d216617fd40"
@@ -254,10 +250,6 @@ convert-source-map@~1.1.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/convert-source-map/-/convert-source-map-1.1.3.tgz#4829c877e9fe49b3161f3bf3673888e204699860"
 
-core-js@^1.0.0:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
-
 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"
@@ -365,12 +357,6 @@ elliptic@^6.0.0:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.0"
 
-encoding@^0.1.11:
-  version "0.1.12"
-  resolved "https://registry.yarnpkg.com/encoding/-/encoding-0.1.12.tgz#538b66f3ee62cd1ab51ec323829d1f9480c74beb"
-  dependencies:
-    iconv-lite "~0.4.13"
-
 envify@^4.0.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/envify/-/envify-4.1.0.tgz#f39ad3db9d6801b4e6b478b61028d3f0b6819f7e"
@@ -393,18 +379,6 @@ evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
     md5.js "^1.3.4"
     safe-buffer "^5.1.1"
 
-fbjs@^0.8.16:
-  version "0.8.16"
-  resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.16.tgz#5e67432f550dc41b572bf55847b8aca64e5337db"
-  dependencies:
-    core-js "^1.0.0"
-    isomorphic-fetch "^2.1.1"
-    loose-envify "^1.0.0"
-    object-assign "^4.1.0"
-    promise "^7.1.1"
-    setimmediate "^1.0.5"
-    ua-parser-js "^0.7.9"
-
 fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
@@ -466,10 +440,6 @@ https-browserify@~0.0.0:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-0.0.1.tgz#3f91365cabe60b77ed0ebba24b454e3e09d95a82"
 
-iconv-lite@~0.4.13:
-  version "0.4.19"
-  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
-
 ieee754@^1.1.4:
   version "1.1.8"
   resolved "https://registry.yarnpkg.com/ieee754/-/ieee754-1.1.8.tgz#be33d40ac10ef1926701f6f08a2d86fbfd1ad3e4"
@@ -516,10 +486,6 @@ is-buffer@^1.1.0:
   version "1.1.5"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.5.tgz#1f3b26ef613b214b88cbca23cc6c01d87961eecc"
 
-is-stream@^1.0.1:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
-
 isarray@^1.0.0, isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -528,17 +494,6 @@ isarray@~0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
 
-isomorphic-fetch@^2.1.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/isomorphic-fetch/-/isomorphic-fetch-2.2.1.tgz#611ae1acf14f5e81f729507472819fe9733558a9"
-  dependencies:
-    node-fetch "^1.0.1"
-    whatwg-fetch ">=0.10.0"
-
-js-tokens@^3.0.0:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
-
 json-stable-stringify@~0.0.0:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/json-stable-stringify/-/json-stable-stringify-0.0.1.tgz#611c23e814db375527df851193db59dd2af27f45"
@@ -571,12 +526,6 @@ lodash.memoize@~3.0.3:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/lodash.memoize/-/lodash.memoize-3.0.4.tgz#2dcbd2c287cbc0a55cc42328bd0c736150d53e3f"
 
-loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.1.tgz#d1a8ad33fa9ce0e713d65fdd0ac8b748d478c848"
-  dependencies:
-    js-tokens "^3.0.0"
-
 md5.js@^1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/md5.js/-/md5.js-1.3.4.tgz#e9bdbde94a20a5ac18b04340fc5764d5b09d901d"
@@ -629,17 +578,6 @@ module-deps@^4.0.8:
     through2 "^2.0.0"
     xtend "^4.0.0"
 
-node-fetch@^1.0.1:
-  version "1.7.3"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
-  dependencies:
-    encoding "^0.1.11"
-    is-stream "^1.0.1"
-
-object-assign@^4.1.0, object-assign@^4.1.1:
-  version "4.1.1"
-  resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
-
 once@^1.3.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
@@ -704,20 +642,6 @@ process@~0.11.0:
   version "0.11.10"
   resolved "https://registry.yarnpkg.com/process/-/process-0.11.10.tgz#7332300e840161bda3e69a1d1d91a7d4bc16f182"
 
-promise@^7.1.1:
-  version "7.3.1"
-  resolved "https://registry.yarnpkg.com/promise/-/promise-7.3.1.tgz#064b72602b18f90f29192b8b1bc418ffd1ebd3bf"
-  dependencies:
-    asap "~2.0.3"
-
-prop-types@^15.6.0:
-  version "15.6.0"
-  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.0.tgz#ceaf083022fc46b4a35f69e13ef75aed0d639856"
-  dependencies:
-    fbjs "^0.8.16"
-    loose-envify "^1.3.1"
-    object-assign "^4.1.1"
-
 public-encrypt@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/public-encrypt/-/public-encrypt-4.0.0.tgz#39f699f3a46560dd5ebacbca693caf7c65c18cc6"
@@ -750,14 +674,6 @@ randombytes@^2.0.0, randombytes@^2.0.1:
   dependencies:
     safe-buffer "^5.1.0"
 
-"react-dom@link:../../../../build/node_modules/react-dom":
-  version "0.0.0"
-  uid ""
-
-"react@link:../../../../build/node_modules/react":
-  version "0.0.0"
-  uid ""
-
 read-only-stream@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/read-only-stream/-/read-only-stream-2.0.0.tgz#2724fd6a8113d73764ac288d4386270c1dbf17f0"
@@ -808,10 +724,6 @@ safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0,
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
-setimmediate@^1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.5.tgz#290cbb232e306942d7d7ea9b83732ab7856f8285"
-
 sha.js@^2.4.0, sha.js@^2.4.8, sha.js@~2.4.4:
   version "2.4.9"
   resolved "https://registry.yarnpkg.com/sha.js/-/sha.js-2.4.9.tgz#98f64880474b74f4a38b8da9d3c0f2d104633e7d"
@@ -921,10 +833,6 @@ typedarray@~0.0.5:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-ua-parser-js@^0.7.9:
-  version "0.7.17"
-  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.17.tgz#e9ec5f9498b9ec910e7ae3ac626a805c4d09ecac"
-
 umd@^3.0.0:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/umd/-/umd-3.0.1.tgz#8ae556e11011f63c2596708a8837259f01b3d60e"
@@ -952,10 +860,6 @@ vm-browserify@~0.0.1:
   dependencies:
     indexof "0.0.1"
 
-whatwg-fetch@>=0.10.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.3.tgz#9c84ec2dcf68187ff00bc64e1274b442176e1c84"
-
 wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"

fixtures/packaging/brunch/dev/package.json

@@ -3,11 +3,10 @@
   "name": "brunch-dev-fixture",
   "devDependencies": {
     "brunch": "^2.9.1",
-    "javascript-brunch": "^2.0.0",
-    "react": "link:../../../../build/node_modules/react",
-    "react-dom": "link:../../../../build/node_modules/react-dom"
+    "javascript-brunch": "^2.0.0"
   },
   "scripts": {
-    "build": "rm -rf public && brunch build"
+    "build": "rm -rf public && brunch build",
+    "prebuild": "cp -r ../../../../build/node_modules/* ./node_modules/"
   }
 }

fixtures/packaging/brunch/dev/yarn.lock

@@ -78,10 +78,6 @@ array-unique@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.2.1.tgz#a1d97ccafcbc2625cc70fadceb36a50c58b01a53"
 
-asap@~2.0.3:
-  version "2.0.6"
-  resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
-
 asn1.js@^4.0.0:
   version "4.9.1"
   resolved "https://registry.yarnpkg.com/asn1.js/-/asn1.js-4.9.1.tgz#48ba240b45a9280e94748990ba597d216617fd40"
@@ -413,10 +409,6 @@ cookie@0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
 
-core-js@^1.0.0:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
-
 core-util-is@1.0.2, 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"
@@ -604,12 +596,6 @@ encodeurl@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.1.tgz#79e3d58655346909fe6f0f45a5de68103b294d20"
 
-encoding@^0.1.11:
-  version "0.1.12"
-  resolved "https://registry.yarnpkg.com/encoding/-/encoding-0.1.12.tgz#538b66f3ee62cd1ab51ec323829d1f9480c74beb"
-  dependencies:
-    iconv-lite "~0.4.13"
-
 es-abstract@^1.6.1:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.9.0.tgz#690829a07cae36b222e7fd9b75c0d0573eb25227"
@@ -726,18 +712,6 @@ fast-levenshtein@^1.1.3:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-1.1.4.tgz#e6a754cc8f15e58987aa9cbd27af66fd6f4e5af9"
 
-fbjs@^0.8.16:
-  version "0.8.16"
-  resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.16.tgz#5e67432f550dc41b572bf55847b8aca64e5337db"
-  dependencies:
-    core-js "^1.0.0"
-    isomorphic-fetch "^2.1.1"
-    loose-envify "^1.0.0"
-    object-assign "^4.1.0"
-    promise "^7.1.1"
-    setimmediate "^1.0.5"
-    ua-parser-js "^0.7.9"
-
 fcache@~0.3:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/fcache/-/fcache-0.3.0.tgz#d45f2f908642b91b798e88195ec47881a51c3d44"
@@ -1027,7 +1001,7 @@ https-browserify@~0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-0.0.1.tgz#3f91365cabe60b77ed0ebba24b454e3e09d95a82"
 
-iconv-lite@0.4.19, iconv-lite@~0.4.13:
+iconv-lite@0.4.19:
   version "0.4.19"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
 
@@ -1152,10 +1126,6 @@ is-regex@^1.0.4:
   dependencies:
     has "^1.0.1"
 
-is-stream@^1.0.1:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
-
 is-symbol@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.1.tgz#3cc59f00025194b6ab2e38dbae6689256b660572"
@@ -1182,13 +1152,6 @@ isobject@^2.0.0:
   dependencies:
     isarray "1.0.0"
 
-isomorphic-fetch@^2.1.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/isomorphic-fetch/-/isomorphic-fetch-2.2.1.tgz#611ae1acf14f5e81f729507472819fe9733558a9"
-  dependencies:
-    node-fetch "^1.0.1"
-    whatwg-fetch ">=0.10.0"
-
 isstream@~0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
@@ -1199,10 +1162,6 @@ javascript-brunch@^2.0.0:
   dependencies:
     esprima "~3.0.0"
 
-js-tokens@^3.0.0:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
-
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
@@ -1264,12 +1223,6 @@ loggy@~0.3.0:
     ansicolors "~0.3.2"
     growl "~1.8.1"
 
-loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.1.tgz#d1a8ad33fa9ce0e713d65fdd0ac8b748d478c848"
-  dependencies:
-    js-tokens "^3.0.0"
-
 md5.js@^1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/md5.js/-/md5.js-1.3.4.tgz#e9bdbde94a20a5ac18b04340fc5764d5b09d901d"
@@ -1423,13 +1376,6 @@ node-browser-modules@^0.1.0:
     util "~0.10.3"
     vm-browserify "~0.0.4"
 
-node-fetch@^1.0.1:
-  version "1.7.3"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
-  dependencies:
-    encoding "^0.1.11"
-    is-stream "^1.0.1"
-
 node-pre-gyp@^0.6.36:
   version "0.6.38"
   resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.6.38.tgz#e92a20f83416415bb4086f6d1fb78b3da73d113d"
@@ -1479,7 +1425,7 @@ oauth-sign@~0.8.1:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.8.2.tgz#46a6ab7f0aead8deae9ec0565780b7d4efeb9d43"
 
-object-assign@^4.1.0, object-assign@^4.1.1:
+object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
 
@@ -1605,20 +1551,6 @@ promise.prototype.finally@^2:
     es-abstract "^1.6.1"
     function-bind "^1.1.0"
 
-promise@^7.1.1:
-  version "7.3.1"
-  resolved "https://registry.yarnpkg.com/promise/-/promise-7.3.1.tgz#064b72602b18f90f29192b8b1bc418ffd1ebd3bf"
-  dependencies:
-    asap "~2.0.3"
-
-prop-types@^15.6.0:
-  version "15.6.0"
-  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.0.tgz#ceaf083022fc46b4a35f69e13ef75aed0d639856"
-  dependencies:
-    fbjs "^0.8.16"
-    loose-envify "^1.3.1"
-    object-assign "^4.1.1"
-
 proxy-addr@~2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.2.tgz#6571504f47bb988ec8180253f85dd7e14952bdec"
@@ -1704,14 +1636,6 @@ rc@^1.1.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
-"react-dom@link:../../../../build/node_modules/react-dom":
-  version "0.0.0"
-  uid ""
-
-"react@link:../../../../build/node_modules/react":
-  version "0.0.0"
-  uid ""
-
 read-components@~0.7:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/read-components/-/read-components-0.7.0.tgz#77dce7adcb72a514240c47a675b9bcf7a3509dd9"
@@ -1870,10 +1794,6 @@ set-immediate-shim@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz#4b2b1b27eb808a9f8dcc481a58e5e56f599f3f61"
 
-setimmediate@^1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.5.tgz#290cbb232e306942d7d7ea9b83732ab7856f8285"
-
 setprototypeof@1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.0.3.tgz#66567e37043eeb4f04d91bd658c0cbefb55b8e04"
@@ -2053,10 +1973,6 @@ type-is@~1.6.15:
     media-typer "0.3.0"
     mime-types "~2.1.15"
 
-ua-parser-js@^0.7.9:
-  version "0.7.17"
-  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.17.tgz#e9ec5f9498b9ec910e7ae3ac626a805c4d09ecac"
-
 uid-number@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/uid-number/-/uid-number-0.0.6.tgz#0ea10e8035e8eb5b8e4449f06da1c730663baa81"
@@ -2118,10 +2034,6 @@ vm-browserify@~0.0.4:
   dependencies:
     indexof "0.0.1"
 
-whatwg-fetch@>=0.10.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.3.tgz#9c84ec2dcf68187ff00bc64e1274b442176e1c84"
-
 which@^1.2.12:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.0.tgz#ff04bdfc010ee547d780bec38e1ac1c2777d253a"

fixtures/packaging/brunch/prod/package.json

@@ -3,11 +3,10 @@
   "name": "brunch-prod-fixture",
   "devDependencies": {
     "brunch": "^2.9.1",
-    "javascript-brunch": "^2.0.0",
-    "react": "link:../../../../build/node_modules/react",
-    "react-dom": "link:../../../../build/node_modules/react-dom"
+    "javascript-brunch": "^2.0.0"
   },
   "scripts": {
-    "build": "rm -rf public && brunch build -p"
+    "build": "rm -rf public && brunch build -p",
+    "prebuild": "cp -r ../../../../build/node_modules/* ./node_modules/"
   }
 }

fixtures/packaging/brunch/prod/yarn.lock

@@ -78,10 +78,6 @@ array-unique@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/array-unique/-/array-unique-0.2.1.tgz#a1d97ccafcbc2625cc70fadceb36a50c58b01a53"
 
-asap@~2.0.3:
-  version "2.0.6"
-  resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
-
 asn1.js@^4.0.0:
   version "4.9.1"
   resolved "https://registry.yarnpkg.com/asn1.js/-/asn1.js-4.9.1.tgz#48ba240b45a9280e94748990ba597d216617fd40"
@@ -413,10 +409,6 @@ cookie@0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
 
-core-js@^1.0.0:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
-
 core-util-is@1.0.2, 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"
@@ -604,12 +596,6 @@ encodeurl@~1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/encodeurl/-/encodeurl-1.0.1.tgz#79e3d58655346909fe6f0f45a5de68103b294d20"
 
-encoding@^0.1.11:
-  version "0.1.12"
-  resolved "https://registry.yarnpkg.com/encoding/-/encoding-0.1.12.tgz#538b66f3ee62cd1ab51ec323829d1f9480c74beb"
-  dependencies:
-    iconv-lite "~0.4.13"
-
 es-abstract@^1.6.1:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.9.0.tgz#690829a07cae36b222e7fd9b75c0d0573eb25227"
@@ -726,18 +712,6 @@ fast-levenshtein@^1.1.3:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-1.1.4.tgz#e6a754cc8f15e58987aa9cbd27af66fd6f4e5af9"
 
-fbjs@^0.8.16:
-  version "0.8.16"
-  resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.16.tgz#5e67432f550dc41b572bf55847b8aca64e5337db"
-  dependencies:
-    core-js "^1.0.0"
-    isomorphic-fetch "^2.1.1"
-    loose-envify "^1.0.0"
-    object-assign "^4.1.0"
-    promise "^7.1.1"
-    setimmediate "^1.0.5"
-    ua-parser-js "^0.7.9"
-
 fcache@~0.3:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/fcache/-/fcache-0.3.0.tgz#d45f2f908642b91b798e88195ec47881a51c3d44"
@@ -1027,7 +1001,7 @@ https-browserify@~0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/https-browserify/-/https-browserify-0.0.1.tgz#3f91365cabe60b77ed0ebba24b454e3e09d95a82"
 
-iconv-lite@0.4.19, iconv-lite@~0.4.13:
+iconv-lite@0.4.19:
   version "0.4.19"
   resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.19.tgz#f7468f60135f5e5dad3399c0a81be9a1603a082b"
 
@@ -1152,10 +1126,6 @@ is-regex@^1.0.4:
   dependencies:
     has "^1.0.1"
 
-is-stream@^1.0.1:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
-
 is-symbol@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.1.tgz#3cc59f00025194b6ab2e38dbae6689256b660572"
@@ -1182,13 +1152,6 @@ isobject@^2.0.0:
   dependencies:
     isarray "1.0.0"
 
-isomorphic-fetch@^2.1.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/isomorphic-fetch/-/isomorphic-fetch-2.2.1.tgz#611ae1acf14f5e81f729507472819fe9733558a9"
-  dependencies:
-    node-fetch "^1.0.1"
-    whatwg-fetch ">=0.10.0"
-
 isstream@~0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
@@ -1199,10 +1162,6 @@ javascript-brunch@^2.0.0:
   dependencies:
     esprima "~3.0.0"
 
-js-tokens@^3.0.0:
-  version "3.0.2"
-  resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
-
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
@@ -1264,12 +1223,6 @@ loggy@~0.3.0:
     ansicolors "~0.3.2"
     growl "~1.8.1"
 
-loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.1.tgz#d1a8ad33fa9ce0e713d65fdd0ac8b748d478c848"
-  dependencies:
-    js-tokens "^3.0.0"
-
 md5.js@^1.3.4:
   version "1.3.4"
   resolved "https://registry.yarnpkg.com/md5.js/-/md5.js-1.3.4.tgz#e9bdbde94a20a5ac18b04340fc5764d5b09d901d"
@@ -1423,13 +1376,6 @@ node-browser-modules@^0.1.0:
     util "~0.10.3"
     vm-browserify "~0.0.4"
 
-node-fetch@^1.0.1:
-  version "1.7.3"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
-  dependencies:
-    encoding "^0.1.11"
-    is-stream "^1.0.1"
-
 node-pre-gyp@^0.6.36:
   version "0.6.38"
   resolved "https://registry.yarnpkg.com/node-pre-gyp/-/node-pre-gyp-0.6.38.tgz#e92a20f83416415bb4086f6d1fb78b3da73d113d"
@@ -1479,7 +1425,7 @@ oauth-sign@~0.8.1:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.8.2.tgz#46a6ab7f0aead8deae9ec0565780b7d4efeb9d43"
 
-object-assign@^4.1.0, object-assign@^4.1.1:
+object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
 
@@ -1605,20 +1551,6 @@ promise.prototype.finally@^2:
     es-abstract "^1.6.1"
     function-bind "^1.1.0"
 
-promise@^7.1.1:
-  version "7.3.1"
-  resolved "https://registry.yarnpkg.com/promise/-/promise-7.3.1.tgz#064b72602b18f90f29192b8b1bc418ffd1ebd3bf"
-  dependencies:
-    asap "~2.0.3"
-
-prop-types@^15.6.0:
-  version "15.6.0"
-  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.0.tgz#ceaf083022fc46b4a35f69e13ef75aed0d639856"
-  dependencies:
-    fbjs "^0.8.16"
-    loose-envify "^1.3.1"
-    object-assign "^4.1.1"
-
 proxy-addr@~2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.2.tgz#6571504f47bb988ec8180253f85dd7e14952bdec"
@@ -1704,14 +1636,6 @@ rc@^1.1.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
-"react-dom@link:../../../../build/node_modules/react-dom":
-  version "0.0.0"
-  uid ""
-
-"react@link:../../../../build/node_modules/react":
-  version "0.0.0"
-  uid ""
-
 read-components@~0.7:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/read-components/-/read-components-0.7.0.tgz#77dce7adcb72a514240c47a675b9bcf7a3509dd9"
@@ -1870,10 +1794,6 @@ set-immediate-shim@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz#4b2b1b27eb808a9f8dcc481a58e5e56f599f3f61"
 
-setimmediate@^1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.5.tgz#290cbb232e306942d7d7ea9b83732ab7856f8285"
-
 setprototypeof@1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/setprototypeof/-/setprototypeof-1.0.3.tgz#66567e37043eeb4f04d91bd658c0cbefb55b8e04"
@@ -2053,10 +1973,6 @@ type-is@~1.6.15:
     media-typer "0.3.0"
     mime-types "~2.1.15"
 
-ua-parser-js@^0.7.9:
-  version "0.7.17"
-  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.17.tgz#e9ec5f9498b9ec910e7ae3ac626a805c4d09ecac"
-
 uid-number@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/uid-number/-/uid-number-0.0.6.tgz#0ea10e8035e8eb5b8e4449f06da1c730663baa81"
@@ -2118,10 +2034,6 @@ vm-browserify@~0.0.4:
   dependencies:
     indexof "0.0.1"
 
-whatwg-fetch@>=0.10.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.3.tgz#9c84ec2dcf68187ff00bc64e1274b442176e1c84"
-
 which@^1.2.12:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.0.tgz#ff04bdfc010ee547d780bec38e1ac1c2777d253a"

fixtures/packaging/index.html

@@ -42,51 +42,51 @@
     </div>
     <div class="frame">
       <h2>browserify (dev)</h2>
-      <iframe src="/fixtures/packaging/browserify/dev/index.html"></iframe>
+      <iframe src="/fixtures/packaging/browserify/dev/"></iframe>
     </div>
     <div class="frame">
       <h2>browserify (prod)</h2>
-      <iframe src="/fixtures/packaging/browserify/prod/index.html"></iframe>
+      <iframe src="/fixtures/packaging/browserify/prod/"></iframe>
     </div>
     <div class="frame">
       <h2>brunch (dev)</h2>
-      <iframe src="/fixtures/packaging/brunch/dev/index.html"></iframe>
+      <iframe src="/fixtures/packaging/brunch/dev/"></iframe>
     </div>
     <div class="frame">
       <h2>brunch (prod)</h2>
-      <iframe src="/fixtures/packaging/brunch/prod/index.html"></iframe>
+      <iframe src="/fixtures/packaging/brunch/prod/"></iframe>
     </div>
     <div class="frame">
       <h2>rjs (dev)</h2>
-      <iframe src="/fixtures/packaging/rjs/dev/index.html"></iframe>
+      <iframe src="/fixtures/packaging/rjs/dev/"></iframe>
     </div>
     <div class="frame">
       <h2>rjs (prod)</h2>
-      <iframe src="/fixtures/packaging/rjs/prod/index.html"></iframe>
+      <iframe src="/fixtures/packaging/rjs/prod/"></iframe>
     </div>    
     <div class="frame">
       <h2>systemjs-builder (dev)</h2>
-      <iframe src="/fixtures/packaging/systemjs-builder/dev/index.html"></iframe>
+      <iframe src="/fixtures/packaging/systemjs-builder/dev/"></iframe>
     </div>
     <div class="frame">
       <h2>systemjs-builder (prod)</h2>
-      <iframe src="/fixtures/packaging/systemjs-builder/prod/index.html"></iframe>
+      <iframe src="/fixtures/packaging/systemjs-builder/prod/"></iframe>
     </div>
     <div class="frame">
       <h2>webpack (dev)</h2>
-      <iframe src="/fixtures/packaging/webpack/dev/index.html"></iframe>
+      <iframe src="/fixtures/packaging/webpack/dev/"></iframe>
     </div>
     <div class="frame">
       <h2>webpack (prod)</h2>
-      <iframe src="/fixtures/packaging/webpack/prod/index.html"></iframe>
+      <iframe src="/fixtures/packaging/webpack/prod/"></iframe>
     </div>
     <div class="frame">
       <h2>webpack-alias (dev)</h2>
-      <iframe src="/fixtures/packaging/webpack-alias/dev/index.html"></iframe>
+      <iframe src="/fixtures/packaging/webpack-alias/dev/"></iframe>
     </div>
     <div class="frame">
       <h2>webpack-alias (prod)</h2>
-      <iframe src="/fixtures/packaging/webpack-alias/prod/index.html"></iframe>
+      <iframe src="/fixtures/packaging/webpack-alias/prod/"></iframe>
     </div>
   </body>
 </html>

fixtures/packaging/rjs/dev/config.js

@@ -6,5 +6,6 @@ module.exports = {
   paths: {
     react: '../../../../build/dist/react.development',
     'react-dom': '../../../../build/dist/react-dom.development',
+    schedule: '../../../../build/dist/schedule.development',
   },
 };

fixtures/packaging/rjs/prod/config.js

@@ -6,5 +6,6 @@ module.exports = {
   paths: {
     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

@@ -2,5 +2,6 @@ System.config({
   paths: {
     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

@@ -2,5 +2,6 @@ System.config({
   paths: {
     react: '../../../../build/dist/react.production.min.js',
     'react-dom': '../../../../build/dist/react-dom.production.min.js',
+    schedule: '../../../../build/dist/schedule.development',
   },
 });

fixtures/scheduler/index.html

@@ -1,8 +1,9 @@
 <!DOCTYPE html>
 <html style="width: 100%; height: 100%;">
-  <head>
-    <meta charset="utf-8">
-    <title>Schedule Test Page</title>
+
+<head>
+  <meta charset="utf-8">
+  <title>Scheduler Test Page</title>
   <style>
     .correct {
       border: solid green 2px;
@@ -11,88 +12,94 @@
       border: dashed red 2px;
     }
   </style>
-  </head>
-  <body>
-    <h1>Schedule Fixture</h1>
-    <p>
-      This fixture is for manual testing purposes, and the patterns used in
-      implementing it should not be used as a model. This is mainly for anyone
-      working on making changes to the `schedule` module.
-    </p>
-    <h2>Tests:</h2>
-    <ol>
-      <li>
-        <button onClick="runTestOne()">Run Test 1</button>
-        <p>Calls the callback within the frame when not blocked:</p>
-        <div><b>Expected:</b></div>
-        <div id="test-1-expected">
-        </div>
-        <div> -------------------------------------------------</div>
-        <div> If you see the same above and below it's correct.
+</head>
+
+<body>
+  <h1>Scheduler Fixture</h1>
+  <p>
+    This fixture is for manual testing purposes, and the patterns used in
+    implementing it should not be used as a model. This is mainly for anyone
+    working on making changes to the `schedule` module.
+  </p>
+  <h2>Tests:</h2>
+  <ol>
+    <li>
+      <button onClick="runTestOne()">Run Test 1</button>
+      <p>Calls the callback within the frame when not blocked:</p>
+      <div><b>Expected:</b></div>
+      <div id="test-1-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-1"></div>
-      </li>
-      <li>
-        <p>Accepts multiple callbacks and calls within frame when not blocked</p>
-        <button onClick="runTestTwo()">Run Test 2</button>
-        <div><b>Expected:</b></div>
-        <div id="test-2-expected">
-        </div>
-        <div> -------------------------------------------------</div>
-        <div> If you see the same above and below it's correct.
+    </li>
+    <li>
+      <p>Accepts multiple callbacks and calls within frame when not blocked</p>
+      <button onClick="runTestTwo()">Run Test 2</button>
+      <div><b>Expected:</b></div>
+      <div id="test-2-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-2"></div>
-      </li>
-      <li>
-        <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">
-        </div>
-        <div> -------------------------------------------------</div>
-        <div> If you see the same above and below it's correct.
+    </li>
+    <li>
+      <p>Schedules callbacks in correct order when they use scheduleCallback to schedule themselves</p>
+      <button onClick="runTestThree()">Run Test 3</button>
+      <div><b>Expected:</b></div>
+      <div id="test-3-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-3"></div>
-      </li>
-      <li>
-        <p>Calls timed out callbacks and then any more pending callbacks, defers others if time runs out</p>
-        <button onClick="runTestFour()">Run Test 4</button>
-        <div><b>Expected:</b></div>
-        <div id="test-4-expected">
-        </div>
-        <div> -------------------------------------------------</div>
-        <div> If you see the same above and below it's correct.
+    </li>
+    <li>
+      <p>Calls timed out callbacks and then any more pending callbacks, defers others if time runs out</p>
+      <button onClick="runTestFour()">Run Test 4</button>
+      <div><b>Expected:</b></div>
+      <div id="test-4-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-4"></div>
-      </li>
-      <li>
-        <p>When some callbacks throw errors, still calls them all within the same frame</p>
-        <p><b>IMPORTANT:</b> Open the console when you run this! Inspect the logs there!</p>
-        <button onClick="runTestFive()">Run Test 5</button>
-      </li>
-      <li>
-        <p>When some callbacks throw errors <b> and some also time out</b>, still calls them all within the same frame</p>
-        <p><b>IMPORTANT:</b> Open the console when you run this! Inspect the logs there!</p>
-        <button onClick="runTestSix()">Run Test 6</button>
-      </li>
-      <li>
-        <p>Continues calling callbacks even when user switches away from this tab</p>
-        <button onClick="runTestSeven()">Run Test 7</button>
-        <div><b>Click the button above, observe the counter, then switch to
-            another tab and switch back:</b></div>
-        <div id="test-7">
-        </div>
-        <div> If the counter advanced while you were away from this tab, it's correct.</div>
-      </li>
-    </ol>
-    <script src="../../build/dist/react-scheduler.development.js"></script>
-    <script src="https://unpkg.com/babel-standalone@6/babel.js"></script>
-    <script type="text/babel">
-const {scheduleWork, cancelWork, now} = ReactScheduler;
+    </li>
+    <li>
+      <p>When some callbacks throw errors, still calls them all within the same frame</p>
+      <p><b>IMPORTANT:</b> Open the console when you run this! Inspect the logs there!</p>
+      <button onClick="runTestFive()">Run Test 5</button>
+    </li>
+    <li>
+      <p>When some callbacks throw errors <b> and some also time out</b>, still calls them all within the same frame</p>
+      <p><b>IMPORTANT:</b> Open the console when you run this! Inspect the logs there!</p>
+      <button onClick="runTestSix()">Run Test 6</button>
+    </li>
+    <li>
+      <p>Continues calling callbacks even when user switches away from this tab</p>
+      <button onClick="runTestSeven()">Run Test 7</button>
+      <div><b>Click the button above, observe the counter, then switch to
+          another tab and switch back:</b></div>
+      <div id="test-7">
+      </div>
+      <div> If the counter advanced while you were away from this tab, it's correct.</div>
+    </li>
+  </ol>
+  <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
+} = Scheduler;
 function displayTestResult(testNumber) {
   const expectationNode = document.getElementById('test-' + testNumber + '-expected');
   const resultNode = document.getElementById('test-' + testNumber);
@@ -218,7 +225,7 @@ function runTestOne() {
   const cb1 = (x) => {
     updateTestResult(1, 'cb1 called with argument of ' + JSON.stringify(x));
   }
-  scheduleWork(cb1);
+  scheduleCallback(cb1);
   updateTestResult(1, 'scheduled Cb1');
   logWhenFramesStart(1, () => {
     displayTestResult(1);
@@ -236,9 +243,9 @@ function runTestTwo() {
   const cbB = (x) => {
     updateTestResult(2, 'cbB called with argument of ' + JSON.stringify(x));
   }
-  scheduleWork(cbA);
+  scheduleCallback(cbA);
   updateTestResult(2, 'scheduled CbA');
-  scheduleWork(cbB);
+  scheduleCallback(cbB);
   updateTestResult(2, 'scheduled CbB');
   logWhenFramesStart(2, () => {
     displayTestResult(2);
@@ -248,12 +255,12 @@ function runTestTwo() {
 
 function runTestThree() {
   // Test 3
-  // Schedules callbacks in correct order when they use scheduleWork to schedule themselves
+  // Schedules callbacks in correct order when they use scheduleCallback to schedule themselves
   clearTestResult(3);
   let callbackAIterations = 0;
   const cbA = (x) => {
     if (callbackAIterations < 1) {
-      scheduleWork(cbA);
+      scheduleCallback(cbA);
       updateTestResult(3, 'scheduled CbA again');
     }
     updateTestResult(3, 'cbA' + callbackAIterations + ' called with argument of ' + JSON.stringify(x));
@@ -262,9 +269,9 @@ function runTestThree() {
   const cbB = (x) => {
     updateTestResult(3, 'cbB called with argument of ' + JSON.stringify(x));
   }
-  scheduleWork(cbA);
+  scheduleCallback(cbA);
   updateTestResult(3, 'scheduled CbA');
-  scheduleWork(cbB);
+  scheduleCallback(cbB);
   updateTestResult(3, 'scheduled CbB');
   logWhenFramesStart(3, () => {
     displayTestResult(3);
@@ -298,13 +305,13 @@ function runTestFour() {
   const cbD = (x) => {
     updateTestResult(4, 'cbD called with argument of ' + JSON.stringify(x));
   }
-  scheduleWork(cbA); // won't time out
+  scheduleCallback(cbA); // won't time out
   updateTestResult(4, 'scheduled cbA');
-  scheduleWork(cbB, {timeout: 100}); // times out later
+  scheduleCallback(cbB, {timeout: 100}); // times out later
   updateTestResult(4, 'scheduled cbB');
-  scheduleWork(cbC, {timeout: 1}); // will time out fast
+  scheduleCallback(cbC, {timeout: 1}); // will time out fast
   updateTestResult(4, 'scheduled cbC');
-  scheduleWork(cbD); // won't time out
+  scheduleCallback(cbD); // won't time out
   updateTestResult(4, 'scheduled cbD');
 
   // should have run in order of C, A, B, D
@@ -383,15 +390,15 @@ function runTestFive() {
         });
       });
     });
-    scheduleWork(cbA);
+    scheduleCallback(cbA);
     console.log('scheduled cbA');
-    scheduleWork(cbB); // will throw error
+    scheduleCallback(cbB); // will throw error
     console.log('scheduled cbB');
-    scheduleWork(cbC);
+    scheduleCallback(cbC);
     console.log('scheduled cbC');
-    scheduleWork(cbD); // will throw error
+    scheduleCallback(cbD); // will throw error
     console.log('scheduled cbD');
-    scheduleWork(cbE);
+    scheduleCallback(cbE);
     console.log('scheduled cbE');
   };
 }
@@ -461,15 +468,15 @@ function runTestSix() {
         });
       });
     });
-    scheduleWork(cbA);
+    scheduleCallback(cbA);
     console.log('scheduled cbA');
-    scheduleWork(cbB); // will throw error
+    scheduleCallback(cbB); // will throw error
     console.log('scheduled cbB');
-    scheduleWork(cbC, {timeout: 1});
+    scheduleCallback(cbC, {timeout: 1});
     console.log('scheduled cbC');
-    scheduleWork(cbD, {timeout: 1}); // will throw error
+    scheduleCallback(cbD, {timeout: 1}); // will throw error
     console.log('scheduled cbD');
-    scheduleWork(cbE, {timeout: 1});
+    scheduleCallback(cbE, {timeout: 1});
     console.log('scheduled cbE');
   };
 }
@@ -485,10 +492,10 @@ function runTestSeven() {
     counter++;
     counterNode.innerHTML = counter;
     waitForTimeToPass(100);
-    scheduleWork(incrementCounterAndScheduleNextCallback);
+    scheduleCallback(incrementCounterAndScheduleNextCallback);
   }
-  scheduleWork(incrementCounterAndScheduleNextCallback);
+  scheduleCallback(incrementCounterAndScheduleNextCallback);
 }
     </script type="text/babel">
   </body>
-</html>
+</html>

fixtures/ssr/yarn.lock

@@ -1334,10 +1334,6 @@ cookie@0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
 
-core-js@^1.0.0:
-  version "1.2.7"
-  resolved "https://registry.yarnpkg.com/core-js/-/core-js-1.2.7.tgz#652294c14651db28fa93bd2d5ff2983a4f08c636"
-
 core-js@^2.4.0:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/core-js/-/core-js-2.4.1.tgz#4de911e667b0eae9124e34254b53aea6fc618d3e"
@@ -2057,18 +2053,6 @@ fb-watchman@^1.8.0, fb-watchman@^1.9.0:
   dependencies:
     bser "1.0.2"
 
-fbjs@^0.8.16:
-  version "0.8.16"
-  resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.16.tgz#5e67432f550dc41b572bf55847b8aca64e5337db"
-  dependencies:
-    core-js "^1.0.0"
-    isomorphic-fetch "^2.1.1"
-    loose-envify "^1.0.0"
-    object-assign "^4.1.0"
-    promise "^7.1.1"
-    setimmediate "^1.0.5"
-    ua-parser-js "^0.7.9"
-
 figures@^1.3.5:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/figures/-/figures-1.7.0.tgz#cbe1e3affcf1cd44b80cadfed28dc793a9701d2e"
@@ -2753,13 +2737,6 @@ isobject@^2.0.0:
   dependencies:
     isarray "1.0.0"
 
-isomorphic-fetch@^2.1.1:
-  version "2.2.1"
-  resolved "https://registry.yarnpkg.com/isomorphic-fetch/-/isomorphic-fetch-2.2.1.tgz#611ae1acf14f5e81f729507472819fe9733558a9"
-  dependencies:
-    node-fetch "^1.0.1"
-    whatwg-fetch ">=0.10.0"
-
 isstream@~0.1.2:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
@@ -3265,7 +3242,7 @@ longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
 
-loose-envify@^1.0.0, loose-envify@^1.1.0, loose-envify@^1.3.1:
+loose-envify@^1.0.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/loose-envify/-/loose-envify-1.3.1.tgz#d1a8ad33fa9ce0e713d65fdd0ac8b748d478c848"
   dependencies:
@@ -3446,13 +3423,6 @@ node-emoji@^1.4.1:
   dependencies:
     string.prototype.codepointat "^0.2.0"
 
-node-fetch@^1.0.1:
-  version "1.7.3"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.7.3.tgz#980f6f72d85211a5347c6b2bc18c5b84c3eb47ef"
-  dependencies:
-    encoding "^0.1.11"
-    is-stream "^1.0.1"
-
 node-fetch@^1.6.3:
   version "1.6.3"
   resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-1.6.3.tgz#dc234edd6489982d58e8f0db4f695029abcd8c04"
@@ -3588,7 +3558,7 @@ oauth-sign@~0.8.1:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.8.2.tgz#46a6ab7f0aead8deae9ec0565780b7d4efeb9d43"
 
-object-assign@4.1.1, object-assign@^4.0.1, object-assign@^4.1.0, object-assign@^4.1.1:
+object-assign@4.1.1, object-assign@^4.0.1, object-assign@^4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
 
@@ -4101,20 +4071,6 @@ promise@7.1.1:
   dependencies:
     asap "~2.0.3"
 
-promise@^7.1.1:
-  version "7.3.1"
-  resolved "https://registry.yarnpkg.com/promise/-/promise-7.3.1.tgz#064b72602b18f90f29192b8b1bc418ffd1ebd3bf"
-  dependencies:
-    asap "~2.0.3"
-
-prop-types@^15.6.0:
-  version "15.6.0"
-  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.0.tgz#ceaf083022fc46b4a35f69e13ef75aed0d639856"
-  dependencies:
-    fbjs "^0.8.16"
-    loose-envify "^1.3.1"
-    object-assign "^4.1.1"
-
 proxy-addr@~1.1.3:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-1.1.4.tgz#27e545f6960a44a627d9b44467e35c1b6b4ce2f3"
@@ -4590,7 +4546,7 @@ set-immediate-shim@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/set-immediate-shim/-/set-immediate-shim-1.0.1.tgz#4b2b1b27eb808a9f8dcc481a58e5e56f599f3f61"
 
-setimmediate@^1.0.4, setimmediate@^1.0.5:
+setimmediate@^1.0.4:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.5.tgz#290cbb232e306942d7d7ea9b83732ab7856f8285"
 
@@ -4985,10 +4941,6 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-ua-parser-js@^0.7.9:
-  version "0.7.17"
-  resolved "https://registry.yarnpkg.com/ua-parser-js/-/ua-parser-js-0.7.17.tgz#e9ec5f9498b9ec910e7ae3ac626a805c4d09ecac"
-
 uglify-js@2.8.x, uglify-js@^2.6:
   version "2.8.21"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-2.8.21.tgz#1733f669ae6f82fc90c7b25ec0f5c783ee375314"
@@ -5242,10 +5194,6 @@ whatwg-fetch@2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.2.tgz#fe294d1d89e36c5be8b3195057f2e4bc74fc980e"
 
-whatwg-fetch@>=0.10.0:
-  version "2.0.3"
-  resolved "https://registry.yarnpkg.com/whatwg-fetch/-/whatwg-fetch-2.0.3.tgz#9c84ec2dcf68187ff00bc64e1274b442176e1c84"
-
 whatwg-url@^4.3.0:
   version "4.7.0"
   resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-4.7.0.tgz#202035ac1955b087cdd20fa8b58ded3ab1cd2af5"

fixtures/tracing/index.html

@@ -0,0 +1,72 @@
+<!DOCTYPE html>
+<html style="width: 100%; height: 100%;">
+  <head>
+    <meta charset="utf-8">
+    <title>Test tracing UMD</title>
+    <style>
+      body {
+        font-family: sans-serif;
+      }
+      ol {
+        display: inline-flex;
+        flex-direction: column;
+        align-items: flex-start;
+      }
+      li {
+        background-color: #F7F7F7;
+        border: solid #CCC 0.125rem;
+        margin-bottom: 0.5rem;
+        border-radius: 0.25rem;
+        padding: 0.5rem;
+      }
+      li:after {
+        content: attr(data-value);
+        margin-left: 0.25rem;
+      }
+      .correct {
+        border-color: #0C0;
+        border-style: solid;
+        background: #EFE;
+      }
+      .incorrect {
+        border-color: #F00;
+        border-style: dashed;
+        background-color: #FEE;
+      }
+    </style>
+  </head>
+  <body>
+    <h1>Test tracing UMD</h1>
+    <p>
+      This fixture tests that the new tracing API is accessible via UMD build using the UMD shim.
+      It does not exhaustively test API functionality, only that the forwarded methods can be called.
+    </p>
+    <p>
+      Before running the tests below, check the console to make sure there are no errors.
+    </p>
+    <h3>
+      Tests
+      <button onClick="runAllTests()">Run all tests</button>
+    </h3>
+    <ol>
+      <li id="checkSchedulerAPI" data-value="...">
+        <strong>Test scheduler API</strong>
+      </li>
+      <li id="checkSchedulerTracingAPI" data-value="...">
+        <strong>Test tracing API</strong>
+      </li>
+      <li id="checkSchedulerTracingSubscriptionsAPI" data-value="...">
+        <strong>Test tracing subscriptions API</strong>
+      </li>
+      <li id="checkEndToEndIntegration" data-value="...">
+        <strong>Test end-to-end integration</strong>
+      </li>
+    </ol>
+    <!-- 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>
+    <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="./script.js"></script>
+  </body>
+</html>

fixtures/tracing/script.js

@@ -0,0 +1,205 @@
+function runTest(listItem, callback) {
+  try {
+    callback();
+    listItem.className = 'correct';
+    listItem.setAttribute('data-value', 'All checks pass');
+  } catch (error) {
+    listItem.className = 'incorrect';
+    listItem.setAttribute('data-value', error);
+  }
+}
+
+function runAllTests() {
+  try {
+    checkSchedulerAPI();
+  } finally {
+    try {
+      checkSchedulerTracingAPI();
+    } finally {
+      try {
+        checkSchedulerTracingSubscriptionsAPI();
+      } finally {
+        checkEndToEndIntegration();
+      }
+    }
+  }
+}
+
+function checkSchedulerAPI() {
+  runTest(document.getElementById('checkSchedulerAPI'), () => {
+    if (
+      typeof Scheduler === 'undefined' ||
+      typeof Scheduler.unstable_now !== 'function' ||
+      typeof Scheduler.unstable_scheduleCallback !== 'function' ||
+      typeof Scheduler.unstable_cancelCallback !== 'function'
+    ) {
+      throw 'API is not defined';
+    }
+
+    if (Scheduler.unstable_now() !== performance.now()) {
+      throw 'API does not work';
+    }
+
+    // There is no real way to verify that the two APIs are connected.
+  });
+}
+
+function checkSchedulerTracingAPI() {
+  runTest(document.getElementById('checkSchedulerTracingAPI'), () => {
+    if (
+      typeof SchedulerTracing === 'undefined' ||
+      typeof SchedulerTracing.unstable_clear !== 'function' ||
+      typeof SchedulerTracing.unstable_getCurrent !== 'function' ||
+      typeof SchedulerTracing.unstable_getThreadID !== 'function' ||
+      typeof SchedulerTracing.unstable_trace !== 'function' ||
+      typeof SchedulerTracing.unstable_wrap !== 'function'
+    ) {
+      throw 'API is not defined';
+    }
+
+    try {
+      let interactionsSet;
+      SchedulerTracing.unstable_trace('test', 123, () => {
+        interactionsSet = SchedulerTracing.unstable_getCurrent();
+      });
+      if (interactionsSet.size !== 1) {
+        throw null;
+      }
+      const interaction = Array.from(interactionsSet)[0];
+      if (interaction.name !== 'test' || interaction.timestamp !== 123) {
+        throw null;
+      }
+    } catch (error) {
+      throw 'API does not work';
+    }
+
+    const ForwardedSchedulerTracing =
+      React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing;
+
+    if (
+      SchedulerTracing.unstable_getThreadID() ===
+      ForwardedSchedulerTracing.unstable_getThreadID()
+    ) {
+      throw 'API forwarding is broken';
+    }
+  });
+}
+
+function checkSchedulerTracingSubscriptionsAPI() {
+  runTest(
+    document.getElementById('checkSchedulerTracingSubscriptionsAPI'),
+    () => {
+      if (
+        typeof SchedulerTracing === 'undefined' ||
+        typeof SchedulerTracing.unstable_subscribe !== 'function' ||
+        typeof SchedulerTracing.unstable_unsubscribe !== 'function'
+      ) {
+        throw 'API is not defined';
+      }
+
+      const onInteractionScheduledWorkCompletedCalls = [];
+      const onInteractionTracedCalls = [];
+      const onWorkCanceledCalls = [];
+      const onWorkScheduledCalls = [];
+      const onWorkStartedCalls = [];
+      const onWorkStoppedCalls = [];
+      const subscriber = {
+        onInteractionScheduledWorkCompleted: (...args) =>
+          onInteractionScheduledWorkCompletedCalls.push(args),
+        onInteractionTraced: (...args) => onInteractionTracedCalls.push(args),
+        onWorkCanceled: (...args) => onWorkCanceledCalls.push(args),
+        onWorkScheduled: (...args) => onWorkScheduledCalls.push(args),
+        onWorkStarted: (...args) => onWorkStartedCalls.push(args),
+        onWorkStopped: (...args) => onWorkStoppedCalls.push(args),
+      };
+
+      try {
+        SchedulerTracing.unstable_subscribe(subscriber);
+        SchedulerTracing.unstable_trace('foo', 123, () => {});
+        SchedulerTracing.unstable_unsubscribe(subscriber);
+        if (onInteractionTracedCalls.length !== 1) {
+          throw null;
+        }
+        const interaction = onInteractionTracedCalls[0][0];
+        if (interaction.name !== 'foo' || interaction.timestamp !== 123) {
+          throw null;
+        }
+        SchedulerTracing.unstable_trace('bar', 456, () => {});
+        if (onInteractionTracedCalls.length !== 1) {
+          throw null;
+        }
+      } catch (error) {
+        throw 'API does not forward methods';
+      }
+
+      const ForwardedSchedulerTracing =
+        React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+          .SchedulerTracing;
+
+      try {
+        ForwardedSchedulerTracing.unstable_subscribe(subscriber);
+        SchedulerTracing.unstable_trace('foo', 123, () => {});
+        ForwardedSchedulerTracing.unstable_trace('bar', 456, () => {});
+        SchedulerTracing.unstable_unsubscribe(subscriber);
+        if (onInteractionTracedCalls.length !== 3) {
+          throw null;
+        }
+        const interactionFoo = onInteractionTracedCalls[1][0];
+        const interactionBar = onInteractionTracedCalls[2][0];
+        if (
+          interactionFoo.name !== 'foo' ||
+          interactionFoo.timestamp !== 123 ||
+          interactionBar.name !== 'bar' ||
+          interactionBar.timestamp !== 456
+        ) {
+          throw null;
+        }
+        ForwardedSchedulerTracing.unstable_trace('baz', 789, () => {});
+        if (onInteractionTracedCalls.length !== 3) {
+          throw null;
+        }
+      } catch (error) {
+        throw 'API forwarding is broken';
+      }
+    }
+  );
+}
+
+function checkEndToEndIntegration() {
+  runTest(document.getElementById('checkEndToEndIntegration'), () => {
+    try {
+      const onRenderCalls = [];
+      const onRender = (...args) => onRenderCalls.push(args);
+      const container = document.createElement('div');
+
+      SchedulerTracing.unstable_trace('render', 123, () => {
+        ReactDOM.render(
+          React.createElement(
+            React.unstable_Profiler,
+            {id: 'profiler', onRender},
+            React.createElement('div', null, 'hi')
+          ),
+          container
+        );
+      });
+
+      if (container.textContent !== 'hi') {
+        throw null;
+      }
+
+      if (onRenderCalls.length !== 1) {
+        throw null;
+      }
+      const call = onRenderCalls[0];
+      if (call.length !== 7) {
+        throw null;
+      }
+      const interaction = Array.from(call[6])[0];
+      if (interaction.name !== 'render' || interaction.timestamp !== 123) {
+        throw null;
+      }
+    } catch (error) {
+      throw 'End to end integration is broken';
+    }
+  });
+}

fixtures/tracing/test.html

@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html style="width: 100%; height: 100%;">
+  <head>
+    <meta charset="utf-8">
+    <title>Test tracing UMD</title>
+    <style>
+      body {
+        font-family: sans-serif;
+      }
+    </style>
+  </head>
+  <body>
+    <div id="root"></div>
+    <!-- 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>
+    <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="./test.js"></script>
+  </body>
+</html>

fixtures/tracing/test.js

@@ -0,0 +1,103 @@
+const {createElement, Component, Placeholder} = React;
+const {unstable_createRoot: createRoot} = ReactDOM;
+const {
+  unstable_subscribe: subscribe,
+  unstable_trace: trace,
+  unstable_wrap: wrap,
+} = SchedulerTracing;
+
+const createLogger = (backgroundColor, color, enabled) => (
+  message,
+  ...args
+) => {
+  if (enabled === false) return;
+  console.groupCollapsed(
+    `%c${message}`,
+    `background-color: ${backgroundColor}; color: ${color}; padding: 2px 4px;`,
+    ...args
+  );
+  console.log(
+    new Error('stack').stack
+      .split('\n')
+      .slice(2)
+      .join('\n')
+  );
+  console.groupEnd();
+};
+
+window.log = {
+  app: createLogger('#37474f', '#fff'),
+  interaction: createLogger('#6a1b9a', '#fff'),
+  react: createLogger('#ff5722', '#fff'),
+  tracing: createLogger('#2962ff', '#fff'),
+  work: createLogger('#e1bee7', '#000'),
+};
+
+// Fake suspense
+const resolvedValues = {};
+const read = key => {
+  if (!resolvedValues[key]) {
+    log.app(`Suspending for "${key}" ...`);
+    throw new Promise(
+      wrap(resolve => {
+        setTimeout(
+          wrap(() => {
+            log.app(`Loaded "${key}" ...`);
+            resolvedValues[key] = true;
+            resolve(key);
+          }),
+          1000
+        );
+      })
+    );
+  }
+  return key;
+};
+
+const TestApp = () =>
+  createElement(
+    Placeholder,
+    {delayMs: 100, fallback: createElement(PlaceholderText)},
+    createElement(SuspendingChild, {text: 'foo'}),
+    createElement(SuspendingChild, {text: 'bar'}),
+    createElement(SuspendingChild, {text: 'baz'})
+  );
+
+const PlaceholderText = () => 'Loading ...';
+
+const SuspendingChild = ({text}) => {
+  const resolvedValue = read(text);
+  return resolvedValue;
+};
+
+subscribe({
+  onInteractionScheduledWorkCompleted: interaction =>
+    log.interaction(
+      'onInteractionScheduledWorkCompleted',
+      JSON.stringify(interaction)
+    ),
+  onInteractionTraced: interaction =>
+    log.interaction('onInteractionTraced', JSON.stringify(interaction)),
+  onWorkCanceled: interactions =>
+    log.work('onWorkCanceled', JSON.stringify(Array.from(interactions))),
+  onWorkScheduled: interactions =>
+    log.work('onWorkScheduled', JSON.stringify(Array.from(interactions))),
+  onWorkStarted: interactions =>
+    log.work('onWorkStarted', JSON.stringify(Array.from(interactions))),
+  onWorkStopped: interactions =>
+    log.work('onWorkStopped', JSON.stringify(Array.from(interactions))),
+});
+
+const element = document.getElementById('root');
+trace('initial_render', performance.now(), () => {
+  const root = createRoot(element);
+  const batch = root.createBatch();
+  log.app('batch.render()');
+  batch.render(createElement(TestApp));
+  batch.then(
+    wrap(() => {
+      log.app('batch.commit()');
+      batch.commit();
+    })
+  );
+});

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/components/App.js

@@ -0,0 +1,89 @@
+import React, {lazy, 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 +1,63 @@
+import React, {Fragment} from 'react';
+import {unstable_createResource} from 'react-cache';
+import Spinner from './Spinner';
+import {fetchCoreContributorListJSON} from '../api';
+
+const ContributorListResource = unstable_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().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 +1,170 @@
+import React, {Suspense} from 'react';
+import {unstable_createResource} from 'react-cache';
+import Spinner from './Spinner';
+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 = unstable_createResource(fetchUserProfileJSON);
+
+function UserDetails({id}) {
+  const user = UserDetailsResource.read(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 = unstable_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(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 = unstable_createResource(
+  fetchUserRepositoriesListJSON
+);
+
+function Repositories({id}) {
+  const repos = UserRepositoriesResource.read(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 {
+  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', performance.now(), () => {
+      // TODO: this is not implemented.
+      // 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/.gitignore

@@ -0,0 +1,21 @@
+# See https://help.github.com/ignore-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

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

@@ -0,0 +1,29 @@
+# CPU async rendering 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 "time slicing" 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.
+
+There are also known bugs and inefficiencies in master so **don't use this fixture for demonstration purposes either yet**. Until they are fixed, this fixture is **not** indicative of React async rendering performance.
+
+## How do I run this fixture?
+
+```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/time-slicing/
+yarn
+
+# 3: Run the app
+yarn start
+```

fixtures/unstable-async/time-slicing/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "cpu-demo",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "glamor": "^2.20.40",
+    "react-markdown": "^3.2.0",
+    "react-scripts": "^1.1.4",
+    "victory": "^0.25.6"
+  },
+  "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"
+  }
+}

fixtures/unstable-async/time-slicing/public/index.html

@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+    <meta name="theme-color" content="#000000">
+    <!--
+      manifest.json provides metadata used when your web app is added to the
+      homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
+    -->
+    <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
+    <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
+    <!--
+      Notice the use of %PUBLIC_URL% in the tags above.
+      It will be replaced with the URL of the `public` folder during the build.
+      Only files inside the `public` folder can be referenced from the HTML.
+
+      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
+      work correctly both with client-side routing and a non-root public URL.
+      Learn how to configure a non-root public URL by running `npm run build`.
+    -->
+    <title>React App</title>
+  </head>
+  <body>
+    <noscript>
+      You need to enable JavaScript to run this app.
+    </noscript>
+    <div id="root"></div>
+    <!--
+      This HTML file is a template.
+      If you open it directly in the browser, you will see an empty page.
+
+      You can add webfonts, meta tags, or analytics to this file.
+      The build step will place the bundled scripts into the <body> tag.
+
+      To begin the development, run `npm start` or `yarn start`.
+      To create a production bundle, use `npm run build` or `yarn build`.
+    -->
+  </body>
+</html>

fixtures/unstable-async/time-slicing/public/manifest.json

@@ -0,0 +1,15 @@
+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "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/time-slicing/src/Charts.js

@@ -0,0 +1,126 @@
+import React, {PureComponent} from 'react';
+import {
+  VictoryArea,
+  VictoryAxis,
+  VictoryChart,
+  VictoryBar,
+  VictoryTheme,
+  VictoryScatter,
+  VictoryStack,
+} from 'victory';
+
+const colors = ['#fff489', '#fa57c1', '#b166cc', '#7572ff', '#69a6f9'];
+
+export default class Charts extends PureComponent {
+  render() {
+    const streamData = this.props.data;
+    return (
+      <div>
+        <div style={{display: 'flex'}}>
+          <VictoryChart
+            theme={VictoryTheme.material}
+            width={400}
+            height={400}
+            style={{
+              parent: {
+                backgroundColor: '#222',
+              },
+            }}>
+            <VictoryAxis
+              style={{
+                axis: {stroke: 'white'},
+                tickLabels: {fill: 'white'},
+              }}
+            />
+            <VictoryAxis
+              style={{
+                axis: {stroke: 'white'},
+                tickLabels: {fill: 'white'},
+              }}
+              dependentAxis
+            />
+            <VictoryScatter
+              data={streamData[0]}
+              size={6}
+              style={{
+                data: {
+                  fill: d => colors[d.x % 5],
+                },
+              }}
+            />
+          </VictoryChart>
+
+          <VictoryChart
+            theme={VictoryTheme.material}
+            width={400}
+            height={400}
+            style={{
+              parent: {
+                backgroundColor: '#222',
+              },
+            }}
+            domainPadding={[20, 20]}>
+            <VictoryAxis
+              style={{
+                axis: {stroke: 'white'},
+                tickLabels: {fill: 'white'},
+              }}
+            />
+            <VictoryAxis
+              style={{
+                axis: {stroke: 'white'},
+                tickLabels: {fill: 'white'},
+              }}
+              dependentAxis
+            />
+            <VictoryBar
+              data={streamData[0]}
+              style={{
+                data: {
+                  fill: d => colors[d.x % 5],
+                  stroke: 'none',
+                  padding: 5,
+                },
+              }}
+            />
+          </VictoryChart>
+        </div>
+        <div
+          style={{
+            display: 'flex',
+            position: 'relative',
+            top: '-50px',
+          }}>
+          <VictoryChart
+            theme={VictoryTheme.material}
+            width={800}
+            height={350}
+            style={{
+              parent: {
+                backgroundColor: '#222',
+              },
+            }}>
+            <VictoryAxis
+              style={{
+                axis: {stroke: 'white'},
+                tickLabels: {fill: 'white'},
+              }}
+            />
+            <VictoryAxis
+              style={{
+                axis: {stroke: 'white'},
+                tickLabels: {fill: 'white'},
+              }}
+              dependentAxis
+            />
+            <VictoryStack>
+              {streamData.map((data, i) => (
+                <VictoryArea key={i} data={data} colorScale={colors} />
+              ))}
+            </VictoryStack>
+          </VictoryChart>
+        </div>
+      </div>
+    );
+  }
+}

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

@@ -0,0 +1,105 @@
+import React, {createRef, PureComponent} from 'react';
+
+const SPEED = 0.003 / Math.PI;
+const FRAMES = 10;
+
+export default class Clock extends PureComponent {
+  faceRef = createRef();
+  arcGroupRef = createRef();
+  clockHandRef = createRef();
+  frame = null;
+  hitCounter = 0;
+  rotation = 0;
+  t0 = Date.now();
+  arcs = [];
+
+  animate = () => {
+    const now = Date.now();
+    const td = now - this.t0;
+    this.rotation = (this.rotation + SPEED * td) % (2 * Math.PI);
+    this.t0 = now;
+
+    this.arcs.push({rotation: this.rotation, td});
+
+    let lx, ly, tx, ty;
+    if (this.arcs.length > FRAMES) {
+      this.arcs.forEach(({rotation, td}, i) => {
+        lx = tx;
+        ly = ty;
+        const r = 145;
+        tx = 155 + r * Math.cos(rotation);
+        ty = 155 + r * Math.sin(rotation);
+        const bigArc = SPEED * td < Math.PI ? '0' : '1';
+        const path = `M${tx} ${ty}A${r} ${r} 0 ${bigArc} 0 ${lx} ${ly}L155 155`;
+        const hue = 120 - Math.min(120, td / 4);
+        const colour = `hsl(${hue}, 100%, ${60 - i * (30 / FRAMES)}%)`;
+        if (i !== 0) {
+          const arcEl = this.arcGroupRef.current.children[i - 1];
+          arcEl.setAttribute('d', path);
+          arcEl.setAttribute('fill', colour);
+        }
+      });
+      this.clockHandRef.current.setAttribute('d', `M155 155L${tx} ${ty}`);
+      this.arcs.shift();
+    }
+
+    if (this.hitCounter > 0) {
+      this.faceRef.current.setAttribute(
+        'fill',
+        `hsla(0, 0%, ${this.hitCounter}%, 0.95)`
+      );
+      this.hitCounter -= 1;
+    } else {
+      this.hitCounter = 0;
+      this.faceRef.current.setAttribute('fill', 'hsla(0, 0%, 5%, 0.95)');
+    }
+
+    this.frame = requestAnimationFrame(this.animate);
+  };
+
+  componentDidMount() {
+    this.frame = requestAnimationFrame(this.animate);
+    if (this.faceRef.current) {
+      this.faceRef.current.addEventListener('click', this.handleClick);
+    }
+  }
+
+  componentDidUpdate() {
+    console.log('componentDidUpdate()', this.faceRef.current);
+  }
+
+  componentWillUnmount() {
+    this.faceRef.current.removeEventListener('click', this.handleClick);
+    if (this.frame) {
+      cancelAnimationFrame(this.frame);
+    }
+  }
+
+  handleClick = e => {
+    e.stopPropagation();
+    this.hitCounter = 50;
+  };
+
+  render() {
+    const paths = new Array(FRAMES);
+    for (let i = 0; i < FRAMES; i++) {
+      paths.push(<path className="arcHand" key={i} />);
+    }
+    return (
+      <div className="stutterer">
+        <svg height="310" width="310">
+          <circle
+            className="clockFace"
+            onClick={this.handleClick}
+            cx={155}
+            cy={155}
+            r={150}
+            ref={this.faceRef}
+          />
+          <g ref={this.arcGroupRef}>{paths}</g>
+          <path className="clockHand" ref={this.clockHandRef} />
+        </svg>
+      </div>
+    );
+  }
+}

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

@@ -0,0 +1,143 @@
+html,
+body {
+  padding: 0px;
+  margin: 0px;
+  user-select: none;
+  font-family: Karla, Helvetica Neue, Helvetica, sans-serif;
+  background: rgb(34, 34, 34);
+  color: white;
+  overflow: hidden;
+}
+
+.VictoryContainer {
+  opacity: 0.8;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+#root {
+  height: 100vh;
+}
+
+.container {
+  width: 100%;
+  max-width: 960px;
+  margin: auto;
+  padding: 10px;
+}
+
+.rendering {
+  margin-top: 20px;
+  margin-bottom: 20px;
+  zoom: 1.8;
+}
+
+label {
+  zoom: 1;
+  margin-right: 50px;
+  font-size: 30px;
+}
+
+label.selected {
+  font-weight: bold;  
+}
+
+label:nth-child(1).selected {
+  color: rgb(253, 25, 153);
+}
+
+label:nth-child(2).selected {
+  color: rgb(255, 240, 1);
+}
+
+label:nth-child(3).selected {
+  color: #61dafb;
+}
+
+.chart {
+  width: 100%;
+  height: 100%;
+}
+
+.input {
+  padding: 16px;
+  font-size: 30px;
+  width: 100%;
+  display: block;
+}
+.input.sync {
+  outline-color: rgba(253, 25, 153, 0.1);
+}
+.input.debounced {
+  outline-color: rgba(255, 240, 1, 0.1);
+}
+.input.async {
+  outline-color: rgba(97, 218, 251, 0.1);
+}
+
+
+label {
+  font-size: 20px;
+}
+
+label label {
+  display: 'inline-block';
+  margin-left: 20px;
+}
+
+.row {
+  flex: 1;
+  display: flex;
+  margin-top: 20px;
+  min-height: 100%;
+}
+
+.column {
+  flex: 1;
+}
+
+.demo {
+  position: relative;
+  min-height: 100vh;
+}
+
+.stutterer {
+  transform: scale(1.5);
+  height: 310px;
+  width: 310px;
+  position: absolute;
+  left: 0;
+  right: 0;
+  top: -256px;
+  bottom: 0;
+  margin: auto;
+  box-shadow: 0 0 10px 10px rgba(0, 0, 0, 0.2);
+  border-radius: 200px;
+}
+
+.clockHand {
+  stroke: white;
+  stroke-width: 10px;
+  stroke-linecap: round;
+}
+
+.clockFace {
+  stroke: white;
+  stroke-width: 10px;
+}
+
+.arcHand {
+}
+
+.innerLine {
+  border-radius: 6px;
+  position: absolute;
+  height: 149px;
+  left: 47.5%;
+  top: 0%;
+  width: 5%;
+  background-color: red;
+  transform-origin: bottom center;
+}