0.0.118

Fix #566

.babelrc

@@ -1,8 +0,0 @@
-{
-  "presets": [
-    "react-native"
-  ],
-  "plugins": [
-    [ "transform-react-remove-prop-types", { "mode": "wrap" } ]
-  ]
-}

.editorconfig

@@ -1,9 +0,0 @@
-# EditorConfig: http://editorconfig.org
-
-root = true
-
-[*]
-end_of_line = lf
-insert_final_newline = true
-indent_style = space
-indent_size = 2

.eslintrc

@@ -9,8 +9,11 @@
     },
     "sourceType": "module"
   },
+  "extends": [
+    "prettier",
+    "prettier/react"
+  ],
   "plugins": [
-    "jsx-a11y",
     "promise",
     "react"
   ],
@@ -21,34 +24,24 @@
   "globals": {
     "document": false,
     "navigator": false,
-    "window": false
+    "window": false,
+    // Flow global types
+    "HTMLInputElement": false,
+    "ReactClass": false,
+    "ReactComponent": false,
+    "ReactElement": false,
+    "ReactPropsChainableTypeChecker": false,
+    "ReactPropsCheckType": false,
+    "ReactPropTypes": false,
+    "SyntheticEvent": false
   },
   "rules": {
-    "accessor-pairs": 2,
-    "array-bracket-spacing": ["error", "always"],
-    "arrow-parens": [2, "always"],
-    "arrow-spacing": [2, { "before": true, "after": true }],
-    "block-spacing": [2, "always"],
-    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
     "camelcase": 0,
-    "comma-dangle": [2, "never"],
-    "comma-spacing": [2, { "before": false, "after": true }],
-    "comma-style": [2, "last"],
-    "computed-property-spacing": ["error", "never"],
     "constructor-super": 2,
-    "curly": [2, "all"],
     "default-case": [2, { commentPattern: '^no default$' }],
-    "dot-location": [2, "property"],
-    "eol-last": 2,
     "eqeqeq": [2, "allow-null"],
-    "generator-star-spacing": [2, { "before": true, "after": true }],
     "handle-callback-err": [2, "^(err|error)$" ],
-    "indent": [2, 2, { "SwitchCase": 1 }],
-    "key-spacing": [2, { "beforeColon": false, "afterColon": true }],
-    "keyword-spacing": [2, { "before": true, "after": true }],
-    "max-len": [2, 120, 4],
     "new-cap": [2, { "newIsCap": true, "capIsNew": false }],
-    "new-parens": 2,
     "no-alert": 1,
     "no-array-constructor": 2,
     "no-caller": 2,
@@ -71,8 +64,6 @@
     "no-extend-native": 2,
     "no-extra-bind": 2,
     "no-extra-boolean-cast": 2,
-    "no-extra-parens": [2, "functions"],
-    "no-extra-semi": 2,
     "no-fallthrough": 2,
     "no-floating-decimal": 2,
     "no-func-assign": 2,
@@ -85,10 +76,7 @@
     "no-labels": [2, { "allowLoop": false, "allowSwitch": false }],
     "no-lone-blocks": 2,
     "no-loop-func": 2,
-    "no-mixed-spaces-and-tabs": 2,
-    "no-multi-spaces": 2,
     "no-multi-str": 2,
-    "no-multiple-empty-lines": [2, { "max": 1 }],
     "no-native-reassign": 2,
     "no-negated-in-lhs": 2,
     "no-new": 2,
@@ -110,11 +98,9 @@
     "no-self-compare": 2,
     "no-sequences": 2,
     "no-shadow-restricted-names": 2,
-    "no-spaced-func": 2,
     "no-sparse-arrays": 2,
     "no-this-before-super": 2,
     "no-throw-literal": 2,
-    "no-trailing-spaces": 2,
     "no-undef": 2,
     "no-undef-init": 2,
     "no-unexpected-multiline": 2,
@@ -129,66 +115,20 @@
     "no-useless-constructor": 2,
     "no-useless-escape": 2,
     "no-var": 2,
-    "no-whitespace-before-property": 2,
     "no-with": 2,
-    "object-curly-spacing": ["error", "always"],
-    "operator-linebreak": [2, "after"],
-    "padded-blocks": [2, "never"],
     "prefer-const": 2,
     "prefer-rest-params": 2,
-    "prefer-template": 2,
     "quotes": [2, "single", "avoid-escape"],
     "radix": 2,
-    "rest-spread-spacing": ["error"],
-    "semi": [2, "always"],
-    "semi-spacing": [2, { "before": false, "after": true }],
-    "space-before-blocks": [2, "always"],
-    "space-before-function-paren": [2, { "anonymous": "always", "named": "never" }],
-    "space-in-parens": [2, "never"],
-    "space-infix-ops": 2,
-    "space-unary-ops": [2, { "words": true, "nonwords": false }],
-    "spaced-comment": [2, "always", { "markers": ["global", "globals", "eslint", "eslint-disable", "*package", "!", ","] }],
-    "template-curly-spacing": [2, "never"],
     "use-isnan": 2,
     "valid-typeof": 2,
-    "wrap-iife": [2, "outside"],
-    "yield-star-spacing": [2, "both"],
     "yoda": [2, "never"],
 
     // promise
     "promise/param-names": 2,
 
-    // jsx accessibility
-    "jsx-a11y/aria-props": 2,
-    "jsx-a11y/aria-proptypes": 2,
-    "jsx-a11y/aria-role": 2,
-    "jsx-a11y/aria-unsupported-elements": 2,
-    "jsx-a11y/heading-has-content": 2,
-    "jsx-a11y/href-no-hash": 2,
-    "jsx-a11y/html-has-lang": 2,
-    "jsx-a11y/img-has-alt": 2,
-    "jsx-a11y/img-redundant-alt": 2,
-    "jsx-a11y/label-has-for": 2,
-    "jsx-a11y/mouse-events-have-key-events": 2,
-    "jsx-a11y/no-access-key": 2,
-    "jsx-a11y/no-marquee": 2,
-    "jsx-a11y/no-onchange": 0,
-    "jsx-a11y/onclick-has-focus": 2,
-    "jsx-a11y/onclick-has-role": 2,
-    "jsx-a11y/role-has-required-aria-props": 2,
-    "jsx-a11y/role-supports-aria-props": 2,
-    "jsx-a11y/scope": 2,
-    "jsx-a11y/tabindex-no-positive": 2,
-
     // react
-    "jsx-quotes": [2, "prefer-single"],
     "react/display-name": 0,
-    "react/jsx-boolean-value": 2,
-    "react/jsx-handler-names": [2, {
-      "eventHandlerPrefix": "_handle"
-    }],
-    "react/jsx-indent": [2, 2],
-    "react/jsx-indent-props": [2, 2],
     "react/jsx-no-bind": 2,
     "react/jsx-no-duplicate-props": 2,
     "react/jsx-no-undef": 2,

.flowconfig

@@ -0,0 +1,14 @@
+[ignore]
+.*/__tests__/.*
+.*/benchmarks/.*
+.*/docs/.*
+.*/node_modules/animated/*
+.*/node_modules/babel-plugin-transform-react-remove-prop-types/*
+
+[include]
+
+[libs]
+types
+
+[options]
+unsafe.enable_getters_and_setters=true

.github/CONTRIBUTING.md

@@ -0,0 +1,125 @@
+# Contributing
+
+## Reporting Issues and Asking Questions
+
+Before opening an issue, please search the [issue
+tracker](https://github.com/necolas/react-native-web/issues) to make sure your
+issue hasn't already been reported.
+
+## Getting started
+
+Visit the [Issue tracker](https://github.com/necolas/react-native-web/issues)
+to find a list of open issues that need attention.
+
+Fork, then clone the repo:
+
+```
+git clone https://github.com/your-username/react-native-web.git
+```
+
+Install dependencies (requires [yarn](https://yarnpkg.com/en/docs/install):
+
+```
+yarn
+```
+
+## Automated tests
+
+To run flow:
+
+```
+yarn flow
+```
+
+To run the unit tests:
+
+```
+yarn jest
+```
+
+…in watch mode:
+
+```
+yarn jest:watch
+```
+
+To run all automated tests:
+
+```
+yarn test
+```
+
+## Visual tests
+
+To run the interactive storybook:
+
+```
+yarn docs:start
+```
+
+To generate a static build of the storybook:
+
+```
+yarn docs:build
+```
+
+To run the performance benchmarks in a browser (opening `./benchmarks/index.html`):
+
+```
+yarn benchmark
+```
+
+## Compile and build
+
+To compile the source code to `dist`:
+
+```
+yarn compile
+```
+
+To create a UMD bundle of the library:
+
+```
+yarn build
+```
+
+### Pre-commit
+
+To format and lint code before commit:
+
+```
+yarn precommit
+```
+
+To format and lint the entire project:
+
+```
+yarn fmt
+yarn lint
+```
+
+### New Features
+
+Please open an issue with a proposal for a new feature or refactoring before
+starting on the work. We don't want you to waste your efforts on a pull request
+that we won't want to accept.
+
+## Pull requests
+
+**Before submitting a pull request,** please make sure the following is done:
+
+1. Fork the repository and create your branch from `master`.
+2. If you've added code that should be tested, add tests!
+3. If you've changed APIs, update the documentation.
+4. Ensure the tests pass (`yarn test`).
+5. Lint and format your code (`yarn fmt && yarn lint`).
+
+You can now submit a pull request, referencing any issues it addresses.
+
+Please try to keep your pull request focused in scope and avoid including
+unrelated commits.
+
+After you have submitted your pull request, we'll try to get back to you as
+soon as possible. We may suggest some changes or improvements.
+
+Thank you for contributing!

.github/ISSUE_TEMPLATE.md

@@ -1,30 +1,20 @@
-<!--
-React Native for Web is an implementation of React Native. If you have feature
-requests, you should post them to https://productpains.com/product/react-native/.
-
-GitHub issues should only be used for bugs or Web-specific features you believe
-React Native requires.
-
-Make sure to add ALL the information needed to understand the bug so that
-someone can help. If the info is missing we'll add the 'needs more information'
-label and close the issue until there is enough information.
--->
+**Do you want to request a *feature* or report a *bug*?**
 
 **What is the current behavior?**
 
-Link to minimal test case: (template: [codepen](https://codepen.io/necolas/pen/PZzwBR?editors=0010))
-
-**What is the expected behaviour?**
-
-**Steps to reproduce**
+**If the current behavior is a bug, please provide the steps to reproduce and
+if a minimal demo of the problem via Glitch or similar (template:
+https://glitch.com/edit/#!/react-native-web-playground).**
 
 1.
 2.
 
-**Environment (include versions)**
+**What is the expected behavior?**
 
-OS:
-Device:
-Browser:
-React Native for Web (version):
-React (version):
+**Environment (include versions). Did this work in previous versions?**
+
+* OS:
+* Device:
+* Browser:
+* React Native for Web (version):
+* React (version):

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,17 +1 @@
-<!--
-Thanks for submitting a pull request! Make sure the PR does only one thing.
-Please provide enough information so that others can review your pull
-request. Make sure you have read the Contributing Guidelines -
-https://github.com/necolas/react-native-web/CONTRIBUTING.md
--->
-
-**This patch solves the following problem**
-
-**Test plan**
-
-**This pull request**
-
-- [ ] includes documentation
-- [ ] includes tests
-- [ ] includes an interactive example
-- [ ] includes screenshots/videos
+**Before submitting a pull request,** please make sure you have followed the steps the CONTRIBUTING guide.

.gitignore

@@ -1,3 +1,2 @@
-/dist
-/dist-examples
-/node_modules
+node_modules
+dist

CONTRIBUTING.md

@@ -1,84 +0,0 @@
-# Contributing
-
-We are open to, and grateful for, any contributions made by the community.
-
-## Reporting Issues and Asking Questions
-
-Before opening an issue, please search the [issue
-tracker](https://github.com/necolas/react-native-web/issues) to make sure your
-issue hasn't already been reported.
-
-## Development
-
-Visit the [Issue tracker](https://github.com/necolas/react-native-web/issues)
-to find a list of open issues that need attention.
-
-Fork, then clone the repo:
-
-```
-git clone https://github.com/your-username/react-native-web.git
-```
-
-Install dependencies (requires [yarn](https://yarnpkg.com/en/docs/install):
-
-```
-yarn
-```
-
-Run the examples:
-
-```
-npm run examples
-```
-
-### Building
-
-```
-npm run build
-```
-
-To create a UMD build:
-
-```
-npm run build:umd
-```
-
-### Testing and Linting
-
-To run the tests:
-
-```
-npm run test
-```
-
-To continuously watch and run tests, run the following:
-
-```
-npm run test:watch
-```
-
-To perform linting, run the following:
-
-```
-npm run lint
-```
-
-### New Features
-
-Please open an issue with a proposal for a new feature or refactoring before
-starting on the work. We don't want you to waste your efforts on a pull request
-that we won't want to accept.
-
-## Submitting Changes
-
-* Open a new issue in the [Issue tracker](https://github.com/necolas/react-native-web/issues).
-* Fork the repo.
-* Create a new feature branch based off the `master` branch.
-* Make sure all tests pass and there are no linting errors.
-* Submit a pull request, referencing any issues it addresses.
-
-Please try to keep your pull request focused in scope and avoid including unrelated commits.
-
-After you have submitted your pull request, we'll try to get back to you as soon as possible. We may suggest some changes or improvements.
-
-Thank you for contributing!

README.md

@@ -16,86 +16,45 @@ Browser support: Chrome, Firefox, Safari >= 7, IE 10, Edge.
 ## Overview
 
 "React Native for Web" is a project to bring React Native's building blocks and
-touch handling to the Web. [Read more](#why).
+touch handling to the Web.
 
-Browse the UI Explorer to see React Native [examples running on
-Web](https://necolas.github.io/react-native-web/storybook/). Or try it out
-online with [React Native for Web: Playground](http://codepen.io/necolas/pen/PZzwBR).
+Browse the [UI Explorer](https://necolas.github.io/react-native-web/storybook/)
+to see React Native examples running on Web. Or remix the [React Native for
+Web: Playground](https://glitch.com/edit/#!/react-native-web-playground) on
+Glitch.
 
 ## Quick start
 
-To install in your app:
+NOTE: React Native for Web supports React/ReactDOM 15.4, 15.5, or 15.6.
+
+Install in your existing app using `yarn` or `npm`:
 
 ```
-npm install --save react react-native-web
+yarn add react@15.6 react-dom@15.6 react-native-web
 ```
 
-Read the [Client and Server rendering](docs/guides/rendering.md) guide.
-
-Alternatively, you can quickly setup a local project
-using [create-react-app](https://github.com/facebookincubator/create-react-app)
-(which supports `react-native-web` out-of-the-box once installed) and
-[react-native-web-starter](https://github.com/grabcode/react-native-web-starter).
+Then read the [Getting Started](docs/guides/getting-started.md) guide.
 
 ## Documentation
 
+The [UI Explorer](https://necolas.github.io/react-native-web/storybook/)
+interactively documents all the APIs and Components.
+
 Guides:
 
+* [Getting started](docs/guides/getting-started.md)
+* [Style](docs/guides/style.md)
 * [Accessibility](docs/guides/accessibility.md)
-* [Client and server rendering](docs/guides/rendering.md)
 * [Direct manipulation](docs/guides/direct-manipulation.md)
 * [Internationalization](docs/guides/internationalization.md)
+* [Advanced use](docs/guides/advanced.md)
 * [Known issues](docs/guides/known-issues.md)
-* [React Native](docs/guides/react-native.md)
-* [Style](docs/guides/style.md)
 
-Exported modules:
+## Starter kits
 
-* Components
-  * [`ActivityIndicator`](docs/components/ActivityIndicator.md)
-  * [`Image`](docs/components/Image.md)
-  * [`ListView`](docs/components/ListView.md)
-  * [`ProgressBar`](docs/components/ProgressBar.md)
-  * [`ScrollView`](docs/components/ScrollView.md)
-  * [`Switch`](docs/components/Switch.md)
-  * [`Text`](docs/components/Text.md)
-  * [`TextInput`](docs/components/TextInput.md)
-  * [`TouchableHighlight`](http://facebook.github.io/react-native/releases/0.22/docs/touchablehighlight.html) (mirrors React Native)
-  * [`TouchableOpacity`](http://facebook.github.io/react-native/releases/0.22/docs/touchableopacity.html) (mirrors React Native)
-  * [`TouchableWithoutFeedback`](docs/components/TouchableWithoutFeedback.md)
-  * [`View`](docs/components/View.md)
-* APIs
-  * [`Animated`](http://facebook.github.io/react-native/releases/0.20/docs/animated.html) (mirrors React Native)
-  * [`AppRegistry`](docs/apis/AppRegistry.md)
-  * [`AppState`](docs/apis/AppState.md)
-  * [`AsyncStorage`](docs/apis/AsyncStorage.md)
-  * [`Dimensions`](docs/apis/Dimensions.md)
-  * [`I18nManager`](docs/apis/I18nManager.md)
-  * [`NativeMethods`](docs/apis/NativeMethods.md)
-  * [`NetInfo`](docs/apis/NetInfo.md)
-  * [`PanResponder`](http://facebook.github.io/react-native/releases/0.20/docs/panresponder.html#content) (mirrors React Native)
-  * [`PixelRatio`](docs/apis/PixelRatio.md)
-  * [`Platform`](docs/apis/Platform.md)
-  * [`StyleSheet`](docs/apis/StyleSheet.md)
-  * [`Vibration`](docs/apis/Vibration.md)
-
-<span id="#why"></span>
-## Why?
-
-There are many different teams at Twitter building web applications with React.
-We want to share React components, libraries, and APIs between teams…much like
-the OSS community tries to do. At our scale, this involves dealing with
-multiple, inter-related problems including: a common way to handle style,
-animation, touch, viewport adaptation, accessibility, themes, RTL layout, and
-server-rendering.
-
-This is hard to do with React DOM, as the components are essentially the same
-low-level building blocks that the browser provides. However, React Native
-avoids, solves, or can solve almost all these problems facing Web teams.
-Central to this is React Native's JavaScript style API (not strictly
-"CSS-in-JS") which avoids the key [problems with
-CSS](https://speakerdeck.com/vjeux/react-css-in-js) by giving up some of the
-complexity of CSS.
+* [create-react-app](https://github.com/facebookincubator/create-react-app) ([on Glitch](https://glitch.com/edit/#!/react-native-web-playground))
+* [react-native-web-starter](https://github.com/grabcode/react-native-web-starter)
+* [react-native-web-webpack](https://github.com/ndbroadbent/react-native-web-webpack)
 
 ## Example code
 
@@ -138,10 +97,10 @@ AppRegistry.runApplication('MyApp', { rootTag: document.getElementById('react-ro
 
 ## Related projects
 
-* [react-native-web-starter](https://github.com/grabcode/react-native-web-starter)
+* [react-primitives](https://github.com/lelandrichardson/react-primitives/)
+* [react-sketchapp](https://github.com/airbnb/react-sketchapp)
+* [reactxp](https://github.com/microsoft/reactxp)
 * [react-native-web-player](https://github.com/dabbott/react-native-web-player)
-* [react-web](https://github.com/taobaofed/react-web)
-* [react-native-for-web](https://github.com/KodersLab/react-native-for-web)
 
 ## License
 

benchmarks/README.md

@@ -0,0 +1,51 @@
+# Performance
+
+To run these benchmarks:
+
+```
+npm run build:performance
+open ./performance/index.html
+```
+
+Append `?fastest` to the URL to include the fastest "other libraries", and
+`?all` to include all the "other libraries".
+
+## Notes
+
+The components used in the render benchmarks are simple enough to be
+implemented by multiple UI or style libraries. The implementations are not
+equivalent in functionality. For example, React Native for Web's stylesheet is
+unique in that it also converts React Native styles to DOM styles, has
+deterministic resolution, and supports RTL layout.
+
+`react-native-web/stylesheet` is a comparative baseline that implements a
+simple `View` without much of React Native's functionality.
+
+## Benchmark results
+
+Typical render timings*: mean ± two standard deviations.
+
+| Implementation                        | Deep tree (ms)    | Wide tree (ms)    | Tweets (ms)       |
+| :--- | ---: | ---: | ---: |
+| `css-modules`                         |  `84.19` `±14.69` | `183.37` `±22.98` | |
+| `react-native-web/stylesheet@0.0.113` |  `88.83` `±14.31` | `185.54` `±24.62` | |
+| `react-native-web@0.0.113`            | `110.45` `±19.63` | `251.53` `±32.52` | `15.52` `±7.93ms` |
+
+Other libraries
+
+| Implementation                       | Deep tree (ms)    | Wide tree (ms)    |
+| :--- | ---: | ---: |
+| `aphrodite@1.2.3`                    |  `84.68` `±18.80` | `180.62` `±41.98` |
+| `styletron@2.5.1`                    |  `83.93` `±13.10` | `185.96` `±45.65` |
+| `react-jss@7.0.1`                    | `174.75` `±30.87` | `411.77` `±83.83` |
+| `glamor@3.0.0-3`                     | `255.21` `±45.68` | `545.74` `±107.79` |
+| `reactxp@0.34.3`                     | `237.46` `±36.72` | `514.48` `±84.87` |
+| `styled-components@2.1.1`            | `266.91` `±50.04` | `598.29` `±95.13` |
+| `styled-components/primitives@2.1.1` | `266.62` `±50.39` | `567.13` `±68.12` |
+| `radium@0.19.1`                      | `518.48` `±69.74` | `1058.85` `±120.85` |
+
+These results indicate that styled render performance is not a significant
+differentiating factor between `aphrodite`, `css-modules`, `react-native-web`,
+and `styletron`.
+
+*MacBook Pro (13-inch, Early 2015); 3.1 GHz Intel Core i7; 16 GB 1867 MHz DDR3. Google Chrome 58 (2x CPU slowdown).

benchmarks/benchmark.js

@@ -0,0 +1,97 @@
+import * as marky from 'marky';
+
+const fmt = time => `${Math.round(time * 100) / 100}ms`;
+
+const measure = (name, fn) => {
+  marky.mark(name);
+  fn();
+  const performanceMeasure = marky.stop(name);
+  return performanceMeasure.duration;
+};
+
+const mean = values => {
+  const sum = values.reduce((sum, value) => sum + value, 0);
+  return sum / values.length;
+};
+
+const median = values => {
+  if (!Array.isArray(values)) {
+    return 0;
+  }
+  if (values.length === 1) {
+    return values[0];
+  }
+
+  const numbers = [...values].sort((a, b) => a - b);
+  return (numbers[(numbers.length - 1) >> 1] + numbers[numbers.length >> 1]) / 2;
+};
+
+const standardDeviation = values => {
+  const avg = mean(values);
+
+  const squareDiffs = values.map(value => {
+    const diff = value - avg;
+    return diff * diff;
+  });
+
+  const meanSquareDiff = mean(squareDiffs);
+  return Math.sqrt(meanSquareDiff);
+};
+
+const benchmark = ({ name, description, setup, teardown, task, runs }) => {
+  return new Promise(resolve => {
+    const durations = [];
+    let i = 0;
+
+    setup();
+    const first = measure('first', task);
+    teardown();
+
+    const done = () => {
+      const stdDev = standardDeviation(durations);
+      const formattedFirst = fmt(first);
+      const formattedMean = fmt(mean(durations));
+      const formattedMedian = fmt(median(durations));
+      const formattedStdDev = fmt(stdDev);
+
+      console.groupCollapsed(`${name}\n${formattedMean} ±${fmt(2 * stdDev)}`);
+      description && console.log(description);
+      console.log(`First: ${formattedFirst}`);
+      console.log(`Median: ${formattedMedian}`);
+      console.log(`Mean: ${formattedMean}`);
+      console.log(`Standard deviation: ${formattedStdDev}`);
+      console.log(durations);
+      console.groupEnd();
+      resolve();
+    };
+
+    const a = () => {
+      setup();
+      window.requestAnimationFrame(b);
+    };
+
+    const b = () => {
+      const duration = measure('mean', task);
+      durations.push(duration);
+      window.requestAnimationFrame(c);
+    };
+
+    const c = () => {
+      teardown();
+      window.requestAnimationFrame(d);
+    };
+
+    const d = () => {
+      i += 1;
+      if (i < runs) {
+        window.requestAnimationFrame(a);
+      } else {
+        window.requestAnimationFrame(done);
+      }
+    };
+
+    window.requestAnimationFrame(a);
+  });
+};
+
+export default benchmark;

benchmarks/createRenderBenchmark.js

@@ -0,0 +1,24 @@
+import benchmark from './benchmark';
+import ReactDOM from 'react-dom';
+
+const node = document.querySelector('.root');
+
+const createRenderBenchmark = ({ description, getElement, name, runs }) => () => {
+  const setup = () => {};
+  const teardown = () => {
+    ReactDOM.unmountComponentAtNode(node);
+  };
+
+  return benchmark({
+    name,
+    description,
+    runs,
+    setup,
+    teardown,
+    task: () => {
+      ReactDOM.render(getElement(), node);
+    }
+  });
+};
+
+export default createRenderBenchmark;

benchmarks/index.html

@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <title>Performance tests</title>
+</head>
+<body>
+  <div class="root"></div>
+  <script src="dist/performance.bundle.js"></script>
+</body>
+</html>

benchmarks/index.js

@@ -0,0 +1,66 @@
+import aphrodite from './src/aphrodite';
+import cssModules from './src/css-modules';
+import glamor from './src/glamor';
+import jss from './src/jss';
+import radium from './src/radium';
+import reactNative from './src/react-native';
+import reactNativeStyleSheet from './src/react-native-stylesheet';
+import styledComponents from './src/styled-components';
+import styledComponentsPrimitives from './src/styled-components-primitives';
+import styletron from './src/styletron';
+import xp from './src/reactxp';
+
+import renderDeepTree from './tests/renderDeepTree';
+import renderTweet from './tests/renderTweet';
+import renderWideTree from './tests/renderWideTree';
+
+const testAll = window.location.search === '?all';
+const testFastest = window.location.search === '?fastest';
+
+const coreTests = [
+  () => renderTweet('react-native-web', reactNative),
+
+  () => renderDeepTree('css-modules', cssModules),
+  () => renderWideTree('css-modules', cssModules),
+  () => renderDeepTree('react-native-web/stylesheet', reactNativeStyleSheet),
+  () => renderWideTree('react-native-web/stylesheet', reactNativeStyleSheet),
+  () => renderDeepTree('react-native-web', reactNative),
+  () => renderWideTree('react-native-web', reactNative)
+];
+
+const fastestTests = [
+  () => renderDeepTree('styletron', styletron),
+  () => renderWideTree('styletron', styletron),
+  () => renderDeepTree('aphrodite', aphrodite),
+  () => renderWideTree('aphrodite', aphrodite)
+];
+
+/**
+ * Optionally run tests using other libraries
+ */
+const restTests = [
+  () => renderDeepTree('glamor', glamor),
+  () => renderWideTree('glamor', glamor),
+  () => renderDeepTree('react-jss', jss),
+  () => renderWideTree('react-jss', jss),
+  () => renderDeepTree('radium', radium),
+  () => renderWideTree('radium', radium),
+  () => renderDeepTree('reactxp', xp),
+  () => renderWideTree('reactxp', xp),
+  () => renderDeepTree('styled-components', styledComponents),
+  () => renderWideTree('styled-components', styledComponents),
+  () => renderDeepTree('styled-components/primitives', styledComponentsPrimitives),
+  () => renderWideTree('styled-components/primitives', styledComponentsPrimitives)
+];
+
+const tests = [...coreTests];
+if (testFastest) {
+  tests.push(...fastestTests);
+}
+if (testAll) {
+  tests.push(...fastestTests);
+  tests.push(...restTests);
+}
+
+// run benchmarks
+tests.reduce((promise, test) => promise.then(test()), Promise.resolve());

benchmarks/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "benchmarks",
+  "private": true,
+  "dependencies": {
+    "aphrodite": "^1.2.3",
+    "classnames": "^2.2.5",
+    "glamor": "^2.20.37",
+    "marky": "^1.2.0",
+    "radium": "^0.19.1",
+    "react-jss": "^7.0.1",
+    "react-primitives": "^0.4.3",
+    "reactxp": "0.34.3",
+    "styled-components": "^2.1.1",
+    "styletron-client": "^2.5.7",
+    "styletron-utils": "^2.5.4"
+  },
+  "devDependencies": {
+    "css-loader": "^0.28.4",
+    "react-addons-perf": "^15.4.2",
+    "style-loader": "^0.18.2"
+  }
+}

benchmarks/src/aphrodite.js

@@ -0,0 +1,7 @@
+import Box from './components/Box/aphrodite';
+import View from './components/View/aphrodite';
+
+export default {
+  Box,
+  View
+};

benchmarks/src/components/AppText/index.js

@@ -0,0 +1,108 @@
+import PropTypes from 'prop-types';
+import theme from '../theme';
+import React, { PureComponent } from 'react';
+import { StyleSheet, Text } from 'react-native';
+
+class AppText extends PureComponent {
+  static displayName = 'AppText';
+
+  static propTypes = {
+    align: PropTypes.oneOf(['center', 'left', 'right']),
+    color: PropTypes.oneOf(['blue', 'deepGray', 'normal', 'red', 'white']),
+    fontStyle: PropTypes.oneOf(['normal', 'italic']),
+    size: PropTypes.oneOf(['small', 'normal', 'large']),
+    uppercase: PropTypes.bool,
+    weight: PropTypes.oneOf(['normal', 'bold'])
+  };
+
+  render() {
+    const { align, color, fontStyle, size, uppercase, weight, ...other } = this.props;
+
+    const style = [
+      styles.root,
+      align && alignStyles[align],
+      color && colorStyles[color],
+      fontStyle && fontStyles[fontStyle],
+      size && sizeStyles[size],
+      weight && weightStyles[weight],
+      uppercase === true && styles.uppercase
+    ];
+
+    return <Text {...other} style={style} />;
+  }
+}
+
+const styles = StyleSheet.create({
+  root: {
+    fontFamily: theme.fontFamily,
+    fontSize: theme.fontSize.normal,
+    fontWeight: 'normal',
+    lineHeight: theme.createLength(theme.lineHeight),
+    wordWrap: 'break-word'
+  },
+  uppercase: {
+    textTransform: 'uppercase'
+  }
+});
+
+const alignStyles = StyleSheet.create({
+  center: {
+    textAlign: 'center'
+  },
+  left: {
+    textAlign: 'left'
+  },
+  right: {
+    textAlign: 'right'
+  }
+});
+
+const colorStyles = StyleSheet.create({
+  blue: {
+    color: theme.colors.blue
+  },
+  deepGray: {
+    color: theme.colors.deepGray
+  },
+  normal: {
+    color: theme.colors.textBlack
+  },
+  red: {
+    color: theme.colors.red
+  },
+  white: {
+    color: theme.colors.white
+  }
+});
+
+const fontStyles = StyleSheet.create({
+  normal: {
+    fontStyle: 'normal'
+  },
+  italic: {
+    fontStyle: 'italic'
+  }
+});
+
+const sizeStyles = StyleSheet.create({
+  small: {
+    fontSize: theme.fontSize.small
+  },
+  normal: {
+    fontSize: theme.fontSize.normal
+  },
+  large: {
+    fontSize: theme.fontSize.large
+  }
+});
+
+const weightStyles = StyleSheet.create({
+  normal: {
+    fontWeight: '400'
+  },
+  bold: {
+    fontWeight: 'bold'
+  }
+});
+
+export default AppText;

benchmarks/src/components/AspectRatio/index.js

@@ -0,0 +1,43 @@
+import PropTypes from 'prop-types';
+import React, { PureComponent } from 'react';
+import { StyleSheet, View } from 'react-native';
+
+class AspectRatio extends PureComponent {
+  static displayName = 'AspectRatio';
+
+  static propTypes = {
+    children: PropTypes.any,
+    ratio: PropTypes.number,
+    style: PropTypes.object
+  };
+
+  static defaultProps = {
+    ratio: 1
+  };
+
+  render() {
+    const { children, ratio, style } = this.props;
+    const percentage = 100 / ratio;
+
+    return (
+      <View style={[styles.root, style]}>
+        <View style={[styles.shim, { paddingBottom: `${percentage}%` }]} />
+        <View style={StyleSheet.absoluteFill}>
+          {children}
+        </View>
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  root: {
+    overflow: 'hidden'
+  },
+  shim: {
+    display: 'block',
+    width: '100%'
+  }
+});
+
+export default AspectRatio;

benchmarks/src/components/Box/aphrodite.js

@@ -0,0 +1,48 @@
+/* eslint-disable react/prop-types */
+import React from 'react';
+import View from '../View/aphrodite';
+import { StyleSheet } from 'aphrodite';
+
+const Box = ({ color, fixed = false, layout = 'column', outer = false, ...other }) =>
+  <View
+    {...other}
+    style={[
+      styles[`color${color}`],
+      fixed && styles.fixed,
+      layout === 'row' && styles.row,
+      outer && styles.outer
+    ]}
+  />;
+
+const styles = StyleSheet.create({
+  outer: {
+    padding: 4
+  },
+  row: {
+    flexDirection: 'row'
+  },
+  color0: {
+    backgroundColor: '#222'
+  },
+  color1: {
+    backgroundColor: '#666'
+  },
+  color2: {
+    backgroundColor: '#999'
+  },
+  color3: {
+    backgroundColor: 'blue'
+  },
+  color4: {
+    backgroundColor: 'orange'
+  },
+  color5: {
+    backgroundColor: 'red'
+  },
+  fixed: {
+    width: 20,
+    height: 20
+  }
+});
+
+export default Box;

benchmarks/src/components/Box/css-modules.js

@@ -0,0 +1,17 @@
+/* eslint-disable react/prop-types */
+import classnames from 'classnames';
+import React from 'react';
+import View from '../View/css-modules';
+import styles from './styles.css';
+
+const Box = ({ color, fixed = false, layout = 'column', outer = false, ...other }) =>
+  <View
+    {...other}
+    className={classnames(styles[`color${color}`], {
+      [styles.fixed]: fixed,
+      [styles.outer]: outer,
+      [styles.row]: layout === 'row'
+    })}
+  />;
+
+export default Box;

benchmarks/src/components/Box/glamor.js

@@ -0,0 +1,47 @@
+/* eslint-disable react/prop-types */
+import React from 'react';
+import View from '../View/glamor';
+
+const Box = ({ color, fixed = false, layout = 'column', outer = false, ...other }) =>
+  <View
+    {...other}
+    style={[
+      styles[`color${color}`],
+      fixed && styles.fixed,
+      layout === 'row' && styles.row,
+      outer && styles.outer
+    ]}
+  />;
+
+const styles = {
+  outer: {
+    padding: 4
+  },
+  row: {
+    flexDirection: 'row'
+  },
+  color0: {
+    backgroundColor: '#222'
+  },
+  color1: {
+    backgroundColor: '#666'
+  },
+  color2: {
+    backgroundColor: '#999'
+  },
+  color3: {
+    backgroundColor: 'blue'
+  },
+  color4: {
+    backgroundColor: 'orange'
+  },
+  color5: {
+    backgroundColor: 'red'
+  },
+  fixed: {
+    width: 20,
+    height: 20
+  }
+};
+
+export default Box;

benchmarks/src/components/Box/jss.js

@@ -0,0 +1,49 @@
+/* eslint-disable react/prop-types */
+import classnames from 'classnames';
+import injectSheet from 'react-jss';
+import React from 'react';
+import View from '../View/jss';
+
+const Box = ({ classes, color, fixed = false, layout = 'column', outer = false, ...other }) =>
+  <View
+    {...other}
+    className={classnames({
+      [classes[`color${color}`]]: true,
+      [classes.fixed]: fixed,
+      [classes.row]: layout === 'row',
+      [classes.outer]: outer
+    })}
+  />;
+
+const styles = {
+  outer: {
+    padding: 4
+  },
+  row: {
+    flexDirection: 'row'
+  },
+  color0: {
+    backgroundColor: '#222'
+  },
+  color1: {
+    backgroundColor: '#666'
+  },
+  color2: {
+    backgroundColor: '#999'
+  },
+  color3: {
+    backgroundColor: 'blue'
+  },
+  color4: {
+    backgroundColor: 'orange'
+  },
+  color5: {
+    backgroundColor: 'red'
+  },
+  fixed: {
+    width: 20,
+    height: 20
+  }
+};
+
+export default injectSheet(styles)(Box);

benchmarks/src/components/Box/radium.js

@@ -0,0 +1,48 @@
+/* eslint-disable react/prop-types */
+import Radium from 'radium';
+import React from 'react';
+import View from '../View/radium';
+
+const Box = ({ color, fixed = false, layout = 'column', outer = false, ...other }) =>
+  <View
+    {...other}
+    style={[
+      styles[`color${color}`],
+      fixed && styles.fixed,
+      layout === 'row' && styles.row,
+      outer && styles.outer
+    ]}
+  />;
+
+const styles = {
+  outer: {
+    padding: 4
+  },
+  row: {
+    flexDirection: 'row'
+  },
+  color0: {
+    backgroundColor: '#222'
+  },
+  color1: {
+    backgroundColor: '#666'
+  },
+  color2: {
+    backgroundColor: '#999'
+  },
+  color3: {
+    backgroundColor: 'blue'
+  },
+  color4: {
+    backgroundColor: 'orange'
+  },
+  color5: {
+    backgroundColor: 'red'
+  },
+  fixed: {
+    width: 20,
+    height: 20
+  }
+};
+
+export default Radium(Box);

benchmarks/src/components/Box/react-native-stylesheet.js

@@ -0,0 +1,48 @@
+/* eslint-disable react/prop-types */
+import React from 'react';
+import StyleSheet from 'react-native/apis/StyleSheet';
+import View from '../View/react-native-stylesheet';
+
+const Box = ({ color, fixed = false, layout = 'column', outer = false, ...other }) =>
+  <View
+    {...other}
+    style={[
+      styles[`color${color}`],
+      fixed && styles.fixed,
+      layout === 'row' && styles.row,
+      outer && styles.outer
+    ]}
+  />;
+
+const styles = StyleSheet.create({
+  outer: {
+    padding: 4
+  },
+  row: {
+    flexDirection: 'row'
+  },
+  color0: {
+    backgroundColor: '#222'
+  },
+  color1: {
+    backgroundColor: '#666'
+  },
+  color2: {
+    backgroundColor: '#999'
+  },
+  color3: {
+    backgroundColor: 'blue'
+  },
+  color4: {
+    backgroundColor: 'orange'
+  },
+  color5: {
+    backgroundColor: 'red'
+  },
+  fixed: {
+    width: 20,
+    height: 20
+  }
+});
+
+export default Box;

benchmarks/src/components/Box/react-native.js

@@ -0,0 +1,47 @@
+/* eslint-disable react/prop-types */
+import React from 'react';
+import { StyleSheet, View } from 'react-native';
+
+const Box = ({ color, fixed = false, layout = 'column', outer = false, ...other }) =>
+  <View
+    {...other}
+    style={[
+      styles[`color${color}`],
+      fixed && styles.fixed,
+      layout === 'row' && styles.row,
+      outer && styles.outer
+    ]}
+  />;
+
+const styles = StyleSheet.create({
+  outer: {
+    padding: 4
+  },
+  row: {
+    flexDirection: 'row'
+  },
+  color0: {
+    backgroundColor: '#222'
+  },
+  color1: {
+    backgroundColor: '#666'
+  },
+  color2: {
+    backgroundColor: '#999'
+  },
+  color3: {
+    backgroundColor: 'blue'
+  },
+  color4: {
+    backgroundColor: 'orange'
+  },
+  color5: {
+    backgroundColor: 'red'
+  },
+  fixed: {
+    width: 20,
+    height: 20
+  }
+});
+
+export default Box;

benchmarks/src/components/Box/reactxp.js

@@ -0,0 +1,47 @@
+/* eslint-disable react/prop-types */
+import React from 'react';
+import { Styles, View } from 'reactxp';
+
+const Box = ({ color, fixed = false, layout = 'column', outer = false, ...other }) =>
+  <View
+    {...other}
+    style={[
+      styles[`color${color}`],
+      fixed && styles.fixed,
+      layout === 'row' && styles.row,
+      outer && styles.outer
+    ]}
+  />;
+
+const styles = {
+  outer: Styles.createViewStyle({
+    padding: 4
+  }),
+  row: Styles.createViewStyle({
+    flexDirection: 'row'
+  }),
+  color0: Styles.createViewStyle({
+    backgroundColor: '#222'
+  }),
+  color1: Styles.createViewStyle({
+    backgroundColor: '#666'
+  }),
+  color2: Styles.createViewStyle({
+    backgroundColor: '#999'
+  }),
+  color3: Styles.createViewStyle({
+    backgroundColor: 'blue'
+  }),
+  color4: Styles.createViewStyle({
+    backgroundColor: 'orange'
+  }),
+  color5: Styles.createViewStyle({
+    backgroundColor: 'red'
+  }),
+  fixed: Styles.createViewStyle({
+    width: 20,
+    height: 20
+  })
+};
+
+export default Box;

benchmarks/src/components/Box/styled-components-primitives.js

@@ -0,0 +1,30 @@
+import styled from 'styled-components/primitives';
+
+const getColor = color => {
+  switch (color) {
+    case 0:
+      return '#222';
+    case 1:
+      return '#666';
+    case 2:
+      return '#999';
+    case 3:
+      return 'blue';
+    case 4:
+      return 'orange';
+    case 5:
+      return 'red';
+    default:
+      return 'transparent';
+  }
+};
+
+const Box = styled.View`
+  flex-direction: ${props => (props.layout === 'column' ? 'column' : 'row')};
+  padding: ${props => (props.outer ? '4px' : '0')};
+  height: ${props => (props.fixed ? '20px' : 'auto')};
+  width: ${props => (props.fixed ? '20px' : 'auto')};
+  background-color: ${props => getColor(props.color)};
+`;
+
+export default Box;

benchmarks/src/components/Box/styled-components.js

@@ -0,0 +1,31 @@
+import styled from 'styled-components';
+import View from '../View/styled-components';
+
+const getColor = color => {
+  switch (color) {
+    case 0:
+      return '#222';
+    case 1:
+      return '#666';
+    case 2:
+      return '#999';
+    case 3:
+      return 'blue';
+    case 4:
+      return 'orange';
+    case 5:
+      return 'red';
+    default:
+      return 'transparent';
+  }
+};
+
+const Box = styled(View)`
+  flex-direction: ${props => (props.layout === 'column' ? 'column' : 'row')};
+  padding: ${props => (props.outer ? '4px' : '0')};
+  height: ${props => (props.fixed ? '20px' : 'auto')};
+  width: ${props => (props.fixed ? '20px' : 'auto')};
+  background-color: ${props => getColor(props.color)};
+`;
+
+export default Box;

benchmarks/src/components/Box/styles.css

@@ -0,0 +1,36 @@
+.outer {
+  padding: 4px;
+}
+
+.row {
+  flex-direction: row;
+}
+
+.color0 {
+  background-color: #222;
+}
+
+.color1 {
+  background-color: #666;
+}
+
+.color2 {
+  background-color: #999;
+}
+
+.color3 {
+  background-color: blue;
+}
+
+.color4 {
+  background-color: orange;
+}
+
+.color5 {
+  background-color: red;
+}
+
+.fixed {
+  width: 20px;
+  height: 20px;
+}

benchmarks/src/components/Box/styletron.js

@@ -0,0 +1,48 @@
+/* eslint-disable react/prop-types */
+import { injectStylePrefixed } from 'styletron-utils';
+import React from 'react';
+import View, { styletron } from '../View/styletron';
+
+const Box = ({ color, fixed = false, layout = 'column', outer = false, ...other }) =>
+  <View
+    {...other}
+    style={[
+      styles[`color${color}`],
+      fixed && styles.fixed,
+      layout === 'row' && styles.row,
+      outer && styles.outer
+    ]}
+  />;
+
+const styles = {
+  outer: injectStylePrefixed(styletron, {
+    padding: '4px'
+  }),
+  row: injectStylePrefixed(styletron, {
+    flexDirection: 'row'
+  }),
+  color0: injectStylePrefixed(styletron, {
+    backgroundColor: '#222'
+  }),
+  color1: injectStylePrefixed(styletron, {
+    backgroundColor: '#666'
+  }),
+  color2: injectStylePrefixed(styletron, {
+    backgroundColor: '#999'
+  }),
+  color3: injectStylePrefixed(styletron, {
+    backgroundColor: 'blue'
+  }),
+  color4: injectStylePrefixed(styletron, {
+    backgroundColor: 'orange'
+  }),
+  color5: injectStylePrefixed(styletron, {
+    backgroundColor: 'red'
+  }),
+  fixed: injectStylePrefixed(styletron, {
+    width: '20px',
+    height: '20px'
+  })
+};
+
+export default Box;

benchmarks/src/components/GridView/index.js

@@ -0,0 +1,53 @@
+import PropTypes from 'prop-types';
+import { StyleSheet, View } from 'react-native';
+import React, { Component } from 'react';
+import theme from '../theme';
+
+class GridView extends Component {
+  static displayName = 'GridView';
+
+  static propTypes = {
+    children: PropTypes.node,
+    hasGap: PropTypes.bool,
+    style: PropTypes.object
+  };
+
+  render() {
+    const { children, hasGap, style, ...other } = this.props;
+
+    return (
+      <View {...other} style={[style, styles.root, hasGap && styles.hasGap]}>
+        {React.Children.map(children, child => {
+          return (
+            child &&
+            React.cloneElement(child, {
+              style: [child.props.style, styles.column, hasGap && styles.hasGapColumn]
+            })
+          );
+        })}
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  root: {
+    flexDirection: 'row'
+  },
+  /**
+   * 1. Distribute all space (rather than extra space)
+   * 2. Prevent wide content from forcing wider flex columns
+   */
+  column: {
+    flexBasis: 0, // 1
+    minWidth: 0 // 2
+  },
+  hasGap: {
+    marginHorizontal: theme.createLength(theme.spaceX * -0.5, 'rem')
+  },
+  hasGapColumn: {
+    marginHorizontal: theme.createLength(theme.spaceX * 0.5, 'rem')
+  }
+});
+
+export default GridView;

benchmarks/src/components/Icons/DirectMessage.js

@@ -0,0 +1,19 @@
+import { createDOMElement } from 'react-native';
+import React from 'react';
+import styles from './styles';
+
+const IconDirectMessage = props =>
+  createDOMElement('svg', {
+    children: (
+      <g>
+        <path d="M43.34 14H12.66L28 27.946z" />
+        <path d="M51.392 14.789L30.018 34.22c-.009.008-.028.006-.039.012-.563.5-1.266.768-1.98.768-.72 0-1.442-.258-2.017-.78L4.609 14.79A3.957 3.957 0 0 0 3 18v37a1.998 1.998 0 0 0 2 2c.464 0 .924-.162 1.292-.473L19 46h30c2.243 0 4-1.757 4-4V18a3.96 3.96 0 0 0-1.608-3.211z" />
+      </g>
+    ),
+    style: [styles.icon, props.style],
+    viewBox: '0 0 56 72'
+  });
+
+IconDirectMessage.metadata = { height: 72, width: 56 };
+
+export default IconDirectMessage;

benchmarks/src/components/Icons/Heart.js

@@ -0,0 +1,18 @@
+import { createDOMElement } from 'react-native';
+import React from 'react';
+import styles from './styles';
+
+const IconHeart = props =>
+  createDOMElement('svg', {
+    children: (
+      <g>
+        <path d="M38.723 12c-7.187 0-11.16 7.306-11.723 8.131C26.437 19.306 22.504 12 15.277 12 8.791 12 3.533 18.163 3.533 24.647 3.533 39.964 21.891 55.907 27 56c5.109-.093 23.467-16.036 23.467-31.353C50.467 18.163 45.209 12 38.723 12z" />
+      </g>
+    ),
+    style: [styles.icon, props.style],
+    viewBox: '0 0 54 72'
+  });
+
+IconHeart.metadata = { height: 72, width: 54 };
+
+export default IconHeart;

benchmarks/src/components/Icons/Reply.js

@@ -0,0 +1,18 @@
+import { createDOMElement } from 'react-native';
+import React from 'react';
+import styles from './styles';
+
+const IconReply = props =>
+  createDOMElement('svg', {
+    children: (
+      <g>
+        <path d="M41 31h-9V19a2.999 2.999 0 0 0-4.817-2.386l-21 16a3 3 0 0 0-.001 4.773l21 16a3.006 3.006 0 0 0 3.15.301A2.997 2.997 0 0 0 32 51V39h9c5.514 0 10 4.486 10 10a4 4 0 0 0 8 0c0-9.925-8.075-18-18-18z" />
+      </g>
+    ),
+    style: [styles.icon, props.style],
+    viewBox: '0 0 62 72'
+  });
+
+IconReply.metadata = { height: 72, width: 62 };
+
+export default IconReply;

benchmarks/src/components/Icons/Retweet.js

@@ -0,0 +1,18 @@
+import { createDOMElement } from 'react-native';
+import React from 'react';
+import styles from './styles';
+
+const IconRetweet = props =>
+  createDOMElement('svg', {
+    children: (
+      <g>
+        <path d="M70.676 36.644A3 3 0 0 0 68 35h-7V19a4 4 0 0 0-4-4H34a4 4 0 0 0 0 8h18a1 1 0 0 1 1 .998V35h-7a3.001 3.001 0 0 0-2.419 4.775l11 15a3.003 3.003 0 0 0 4.839-.001l11-15a3.001 3.001 0 0 0 .256-3.13zM40.001 48H22a.995.995 0 0 1-.992-.96L21.001 36h7a3.001 3.001 0 0 0 2.419-4.775l-11-15a3.003 3.003 0 0 0-4.839.001l-11 15A3 3 0 0 0 6.001 36h7l.011 16.003a4 4 0 0 0 4 3.997h22.989a4 4 0 0 0 0-8z" />
+      </g>
+    ),
+    style: [styles.icon, props.style],
+    viewBox: '0 0 74 72'
+  });
+
+IconRetweet.metadata = { height: 72, width: 74 };
+
+export default IconRetweet;

benchmarks/src/components/Icons/styles.js

@@ -0,0 +1,15 @@
+import { StyleSheet } from 'react-native';
+
+const styles = StyleSheet.create({
+  icon: {
+    display: 'inline-block',
+    fill: 'currentcolor',
+    height: '1.25em',
+    maxWidth: '100%',
+    position: 'relative',
+    userSelect: 'none',
+    verticalAlign: 'text-bottom'
+  }
+});
+
+export default styles;

benchmarks/src/components/NestedTree/index.js

@@ -0,0 +1,44 @@
+import PropTypes from 'prop-types';
+import React, { Component } from 'react';
+
+class DeepTree extends Component {
+  static propTypes = {
+    breadth: PropTypes.number.isRequired,
+    components: PropTypes.object,
+    depth: PropTypes.number.isRequired,
+    id: PropTypes.number.isRequired,
+    wrap: PropTypes.number.isRequired
+  };
+
+  render() {
+    const { breadth, components, depth, id, wrap } = this.props;
+    const { Box } = components;
+
+    let result = (
+      <Box color={id % 3} components={components} layout={depth % 2 === 0 ? 'column' : 'row'} outer>
+        {depth === 0 && <Box color={id % 3 + 3} components={components} fixed />}
+        {depth !== 0 &&
+          Array.from({ length: breadth }).map((el, i) =>
+            <DeepTree
+              breadth={breadth}
+              components={components}
+              depth={depth - 1}
+              id={i}
+              key={i}
+              wrap={wrap}
+            />
+          )}
+      </Box>
+    );
+    for (let i = 0; i < wrap; i++) {
+      result = (
+        <Box components={components}>
+          {result}
+        </Box>
+      );
+    }
+    return result;
+  }
+}
+
+export default DeepTree;

benchmarks/src/components/Tweet/index.js

@@ -0,0 +1,144 @@
+import AspectRatio from '../AspectRatio';
+import GridView from '../GridView';
+import PropTypes from 'prop-types';
+import TweetActionsBar from '../TweetActionsBar';
+import TweetText from '../TweetText';
+import UserAvatar from '../UserAvatar';
+import UserNames from '../UserNames';
+import { Image, StyleSheet, Text, View } from 'react-native';
+import React, { Component } from 'react';
+import theme from '../theme';
+
+export class Tweet extends Component {
+  static displayName = 'Tweet';
+
+  static propTypes = {
+    tweet: PropTypes.object.isRequired
+  };
+
+  render() {
+    const { tweet } = this.props;
+    const { id, lang, media, textParts, timestamp, user } = tweet;
+    const { fullName, profileImageUrl, screenName } = user;
+
+    return (
+      <View accessibilityRole="article" accessible style={styles.root}>
+        <GridView hasGap>
+          <View style={styles.avatarColumn}>
+            <View
+              accessibilityRole="link"
+              accessible
+              href={`/${screenName}`}
+              style={styles.avatarLink}
+            >
+              <UserAvatar style={styles.avatar} uri={profileImageUrl} />
+            </View>
+          </View>
+
+          <View style={styles.bodyColumn}>
+            <View style={styles.body}>
+              <View style={styles.row}>
+                <Text
+                  accessibilityRole="link"
+                  children={timestamp}
+                  href={`/${screenName}/status/${id}`}
+                  style={styles.timestamp}
+                />
+                <UserNames fullName={fullName} screenName={screenName} />
+              </View>
+
+              <View accessibilityRole="heading" aria-level="4">
+                <TweetText displayMode={'links'} lang={lang} textParts={textParts} />
+              </View>
+
+              {media
+                ? <View style={styles.richContent}>
+                    <AspectRatio ratio={16 / 9}>
+                      <Image
+                        resizeMode={Image.resizeMode.cover}
+                        source={media.source}
+                        style={styles.media}
+                      />
+                    </AspectRatio>
+                  </View>
+                : null}
+            </View>
+
+            <TweetActionsBar
+              actions={[
+                { name: 'reply', label: 'Reply' },
+                {
+                  name: 'retweet',
+                  label: 'Retweet',
+                  count: tweet.retweet_count,
+                  highlighted: tweet.retweeted
+                },
+                {
+                  name: 'like',
+                  label: 'Like',
+                  count: tweet.favorite_count,
+                  highlighted: tweet.favorited
+                },
+                { name: 'directMessage', label: 'Direct Message' }
+              ]}
+              style={styles.actionBar}
+            />
+          </View>
+        </GridView>
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  root: {
+    paddingVertical: theme.createLength(theme.spaceY * 0.75, 'rem'),
+    paddingHorizontal: theme.createLength(theme.spaceX, 'rem')
+  },
+  avatarColumn: {
+    flexGrow: 1,
+    minWidth: 32
+  },
+  bodyColumn: {
+    flexGrow: 7
+  },
+  row: {
+    flexDirection: 'row',
+    justifyContent: 'space-between'
+  },
+  avatarLink: {
+    display: 'block',
+    flexShrink: 1,
+    flexGrow: 0,
+    width: '100%'
+  },
+  avatar: {
+    width: '100%'
+  },
+  body: {
+    marginTop: '-0.15rem'
+  },
+  timestamp: {
+    color: theme.colors.deepGray,
+    marginLeft: theme.createLength(theme.spaceX, 'rem'),
+    order: 1,
+    textDecorationLine: 'none',
+    whiteSpace: 'nowrap'
+  },
+  actionBar: {
+    marginTop: theme.createLength(theme.spaceY * 0.5, 'rem')
+  },
+  richContent: {
+    borderRadius: '0.35rem',
+    marginTop: theme.createLength(theme.spaceY * 0.5, 'rem'),
+    overflow: 'hidden'
+  },
+  media: {
+    ...StyleSheet.absoluteFillObject,
+    margin: 'auto',
+    width: 'auto',
+    height: 'auto'
+  }
+});
+
+export default Tweet;

benchmarks/src/components/TweetAction/index.js

@@ -0,0 +1,82 @@
+import IconReply from '../Icons/Reply';
+import IconHeart from '../Icons/Heart';
+import IconRetweet from '../Icons/Retweet';
+import IconDirectMessage from '../Icons/DirectMessage';
+import PropTypes from 'prop-types';
+import React from 'react';
+import theme from '../theme';
+import { Text, View, StyleSheet } from 'react-native';
+
+const getIcon = (icon, highlighted) => {
+  switch (icon) {
+    case 'like':
+      return <IconHeart />;
+    case 'reply':
+      return <IconReply />;
+    case 'retweet':
+      return <IconRetweet />;
+    case 'directMessage':
+      return <IconDirectMessage />;
+    default:
+      return null;
+  }
+};
+
+export default class TweetAction extends React.Component {
+  static displayName = 'TweetAction';
+
+  static propTypes = {
+    count: PropTypes.number,
+    displayMode: PropTypes.oneOf(['like', 'reply', 'retweet', 'directMessage']),
+    highlighted: PropTypes.bool,
+    onPress: PropTypes.func,
+    style: PropTypes.object
+  };
+
+  render() {
+    const { count, displayMode, highlighted, onPress, style } = this.props;
+
+    return (
+      <View accessibilityRole="button" onPress={onPress} style={[styles.root, style]}>
+        <Text
+          style={[
+            styles.inner,
+            displayMode === 'like' && highlighted && styles.likedColor,
+            displayMode === 'retweet' && highlighted && styles.retweetedColor
+          ]}
+        >
+          {getIcon(displayMode, highlighted)}
+          {count > 0
+            ? <Text style={styles.count}>
+                {count}
+              </Text>
+            : null}
+        </Text>
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  root: {
+    minHeight: theme.createLength(theme.lineHeight, 'rem'),
+    overflow: 'visible',
+    userSelect: 'none',
+    whiteSpace: 'nowrap'
+  },
+  inner: {
+    alignItems: 'center',
+    color: theme.colors.deepGray,
+    display: 'flex',
+    flexDirection: 'row'
+  },
+  count: {
+    marginLeft: '0.25em'
+  },
+  retweetedColor: {
+    color: theme.colors.green
+  },
+  likedColor: {
+    color: theme.colors.red
+  }
+});

benchmarks/src/components/TweetActionsBar/index.js

@@ -0,0 +1,52 @@
+import PropTypes from 'prop-types';
+import TweetAction from '../TweetAction';
+import { View, StyleSheet } from 'react-native';
+import React, { PureComponent } from 'react';
+
+const actionNames = ['reply', 'retweet', 'like', 'directMessage'];
+
+export default class TweetActionsBar extends PureComponent {
+  static propTypes = {
+    actions: PropTypes.arrayOf(
+      PropTypes.shape({
+        count: PropTypes.number,
+        label: PropTypes.string,
+        highlighted: PropTypes.bool,
+        name: PropTypes.oneOf(actionNames).isRequired,
+        onPress: PropTypes.func
+      })
+    ),
+    style: PropTypes.object
+  };
+
+  render() {
+    const { actions, style } = this.props;
+
+    /* eslint-disable react/jsx-handler-names */
+    return (
+      <View style={[styles.root, style]}>
+        {actions.map((action, i) =>
+          <TweetAction
+            accessibilityLabel={actions.label}
+            count={action.count}
+            displayMode={action.name}
+            highlighted={action.highlighted}
+            key={i}
+            onPress={action.onPress}
+            style={styles.action}
+          />
+        )}
+      </View>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  root: {
+    flexDirection: 'row'
+  },
+  action: {
+    display: 'block',
+    marginRight: '10%'
+  }
+});

benchmarks/src/components/TweetText/index.js

@@ -0,0 +1,29 @@
+import AppText from '../AppText';
+import React from 'react';
+import TweetTextPart from '../TweetTextPart';
+import { array, number, string } from 'prop-types';
+
+class TweetText extends React.Component {
+  static displayName = 'TweetText';
+
+  static propTypes = {
+    displayMode: TweetTextPart.propTypes.displayMode,
+    lang: string,
+    numberOfLines: number,
+    textParts: array.isRequired
+  };
+
+  render() {
+    const { displayMode, lang, numberOfLines, textParts, ...other } = this.props;
+
+    return (
+      <AppText {...other} lang={lang} numberOfLines={numberOfLines}>
+        {textParts.map((part, i) =>
+          <TweetTextPart displayMode={displayMode} key={i} part={part} />
+        )}
+      </AppText>
+    );
+  }
+}
+
+export default TweetText;

benchmarks/src/components/TweetTextPart/index.js

@@ -0,0 +1,112 @@
+/* eslint-disable react/prop-types */
+import { Image, StyleSheet, Text } from 'react-native';
+import PropTypes from 'prop-types';
+import React from 'react';
+import theme from '../theme';
+
+const createTextEntity = ({ part }) => <Text>{`${part.prefix}${part.text}`}</Text>;
+
+const createTwemojiEntity = ({ part }) =>
+  <Image
+    accessibilityLabel={part.text}
+    draggable={false}
+    source={{ uri: part.emoji }}
+    style={styles.twemoji}
+  />;
+
+// @mention, #hashtag, $cashtag
+const createSymbolEntity = ({ displayMode, part }) => {
+  const links = displayMode === 'links';
+  return (
+    <Text accessibilityRole={links ? 'link' : null} href={part.url} style={[links && styles.link]}>
+      {`${part.prefix}${part.text}`}
+    </Text>
+  );
+};
+
+// internal links
+const createLinkEntity = ({ displayMode, part }) => {
+  const { displayUrl, linkRelation, url } = part;
+  const links = displayMode === 'links';
+
+  return (
+    <Text
+      accessibilityRole={links ? 'link' : null}
+      href={url}
+      rel={links ? linkRelation : null}
+      style={[links && styles.link]}
+    >
+      {displayUrl}
+    </Text>
+  );
+};
+
+// external links
+const createExternalLinkEntity = ({ displayMode, part }) => {
+  const { displayUrl, linkRelation, url } = part;
+  const links = displayMode === 'links';
+
+  return (
+    <Text
+      accessibilityRole={links ? 'link' : null}
+      href={url}
+      rel={links ? linkRelation : null}
+      style={[links && styles.link]}
+      target="_blank"
+    >
+      {displayUrl}
+    </Text>
+  );
+};
+
+class TweetTextPart extends React.Component {
+  static displayName = 'TweetTextPart';
+
+  static propTypes = {
+    displayMode: PropTypes.oneOf(['links', 'no-links']),
+    part: PropTypes.object
+  };
+
+  static defaultProps = {
+    displayMode: 'links'
+  };
+
+  render() {
+    let renderer;
+    const { isEmoji, isEntity, isHashtag, isMention, isMedia, isUrl } = this.props.part;
+
+    if (isEmoji || isEntity || isUrl || isMedia) {
+      if (isUrl) {
+        renderer = createExternalLinkEntity;
+      } else if (isHashtag || isMention) {
+        renderer = createSymbolEntity;
+      } else if (isEmoji) {
+        renderer = createTwemojiEntity;
+      } else {
+        renderer = createLinkEntity;
+      }
+    } else {
+      renderer = createTextEntity;
+    }
+
+    return renderer(this.props);
+  }
+}
+
+const styles = StyleSheet.create({
+  link: {
+    color: theme.colors.blue,
+    textDecorationLine: 'none',
+    unicodeBidi: 'embed'
+  },
+  twemoji: {
+    display: 'inline-block',
+    height: '1.25em',
+    width: '1.25em',
+    paddingRight: '0.05em',
+    paddingLeft: '0.1em',
+    verticalAlign: '-0.2em'
+  }
+});
+
+export default TweetTextPart;

benchmarks/src/components/UserAvatar/index.js

@@ -0,0 +1,65 @@
+import AspectRatio from '../AspectRatio';
+import PropTypes from 'prop-types';
+import { Image, StyleSheet } from 'react-native';
+import React, { PureComponent } from 'react';
+import theme from '../theme';
+
+class UserAvatar extends PureComponent {
+  static displayName = 'UserAvatar';
+
+  static propTypes = {
+    accessibilityLabel: PropTypes.string,
+    circle: PropTypes.bool,
+    style: PropTypes.object,
+    uri: PropTypes.string
+  };
+
+  static defaultProps = {
+    circle: false
+  };
+
+  render() {
+    const { accessibilityLabel, circle, style, uri } = this.props;
+
+    return (
+      <AspectRatio ratio={1} style={[styles.root, style]}>
+        {uri
+          ? <Image
+              accessibilityLabel={accessibilityLabel}
+              onLoad={this._handleLoad}
+              ref={this._setImageRef}
+              source={{ uri }}
+              style={[styles.image, circle && styles.circle]}
+            />
+          : null}
+      </AspectRatio>
+    );
+  }
+
+  _handleLoad = () => {
+    this._imageRef && this._imageRef.setNativeProps(nativeProps);
+  };
+
+  _setImageRef = component => {
+    this._imageRef = component;
+  };
+}
+
+const nativeProps = { style: { backgroundColor: '#fff' } };
+
+const styles = StyleSheet.create({
+  root: {
+    borderRadius: '0.35rem'
+  },
+  circle: {
+    borderRadius: '9999px'
+  },
+  image: {
+    backgroundColor: theme.colors.fadedGray,
+    display: 'block',
+    height: '100%',
+    width: '100%'
+  }
+});
+
+export default UserAvatar;

benchmarks/src/components/UserNames/index.js

@@ -0,0 +1,52 @@
+import AppText from '../AppText';
+import PropTypes from 'prop-types';
+import { StyleSheet } from 'react-native';
+import React, { PureComponent } from 'react';
+
+class UserNames extends PureComponent {
+  static displayName = 'UserNames';
+
+  static propTypes = {
+    fullName: PropTypes.string,
+    layout: PropTypes.oneOf(['nowrap', 'stack']),
+    onPress: PropTypes.func,
+    screenName: PropTypes.string,
+    style: PropTypes.object
+  };
+
+  static defaultProps = {
+    layout: 'nowrap'
+  };
+
+  render() {
+    const { fullName, layout, onPress, screenName, style, ...other } = this.props;
+
+    return (
+      <AppText
+        {...other}
+        color="deepGray"
+        numberOfLines={layout === 'nowrap' ? 1 : null}
+        onPress={onPress}
+        style={[styles.root, style]}
+      >
+        <AppText color="normal" weight="bold">
+          {fullName}
+        </AppText>
+        {layout === 'stack' ? ' \u000A' : ' '}
+        <AppText color="deepGray" style={styles.screenName}>{`@${screenName}`}</AppText>
+      </AppText>
+    );
+  }
+}
+
+const styles = StyleSheet.create({
+  root: {
+    display: 'inline-block'
+  },
+  screenName: {
+    unicodeBidi: 'embed',
+    writingDirection: 'ltr'
+  }
+});
+
+export default UserNames;

benchmarks/src/components/View/aphrodite.js

@@ -0,0 +1,31 @@
+/* eslint-disable react/prop-types */
+import React from 'react';
+import { css, StyleSheet } from 'aphrodite';
+
+class View extends React.Component {
+  render() {
+    const { style, ...other } = this.props;
+    return <div {...other} className={css(styles.root, style)} />;
+  }
+}
+
+const styles = StyleSheet.create({
+  root: {
+    alignItems: 'stretch',
+    borderWidth: 0,
+    borderStyle: 'solid',
+    boxSizing: 'border-box',
+    display: 'flex',
+    flexBasis: 'auto',
+    flexDirection: 'column',
+    flexShrink: 0,
+    margin: 0,
+    padding: 0,
+    position: 'relative',
+    // fix flexbox bugs
+    minHeight: 0,
+    minWidth: 0
+  }
+});
+
+export default View;

benchmarks/src/components/View/css-modules.js

@@ -0,0 +1,13 @@
+/* eslint-disable react/prop-types */
+import classnames from 'classnames';
+import React from 'react';
+import styles from './styles.css';
+
+class View extends React.Component {
+  render() {
+    const props = this.props;
+    return <div {...props} className={classnames(styles.initial, props.className)} />;
+  }
+}
+
+export default View;

benchmarks/src/components/View/glamor.js

@@ -0,0 +1,29 @@
+/* eslint-disable react/prop-types */
+import { css } from 'glamor';
+import React from 'react';
+
+class View extends React.Component {
+  render() {
+    const { style, ...other } = this.props;
+    return <div {...other} className={css(viewStyle, ...style)} />;
+  }
+}
+
+const viewStyle = {
+  alignItems: 'stretch',
+  borderWidth: 0,
+  borderStyle: 'solid',
+  boxSizing: 'border-box',
+  display: 'flex',
+  flexBasis: 'auto',
+  flexDirection: 'column',
+  flexShrink: 0,
+  margin: 0,
+  padding: 0,
+  position: 'relative',
+  // fix flexbox bugs
+  minHeight: 0,
+  minWidth: 0
+};
+
+export default View;

benchmarks/src/components/View/jss.js

@@ -0,0 +1,32 @@
+/* eslint-disable react/prop-types */
+import classnames from 'classnames';
+import injectSheet from 'react-jss';
+import React from 'react';
+
+class View extends React.Component {
+  render() {
+    const { classes, className, ...other } = this.props;
+    return <div {...other} className={classnames(classes.root, className)} />;
+  }
+}
+
+const styles = {
+  root: {
+    alignItems: 'stretch',
+    borderWidth: 0,
+    borderStyle: 'solid',
+    boxSizing: 'border-box',
+    display: 'flex',
+    flexBasis: 'auto',
+    flexDirection: 'column',
+    flexShrink: 0,
+    margin: 0,
+    padding: 0,
+    position: 'relative',
+    // fix flexbox bugs
+    minHeight: 0,
+    minWidth: 0
+  }
+};
+
+export default injectSheet(styles)(View);

benchmarks/src/components/View/radium.js

@@ -0,0 +1,31 @@
+/* eslint-disable react/prop-types */
+import Radium from 'radium';
+import React from 'react';
+
+class View extends React.Component {
+  render() {
+    const { style, ...other } = this.props;
+    return <div {...other} style={[styles.root, style]} />;
+  }
+}
+
+const styles = {
+  root: {
+    alignItems: 'stretch',
+    borderWidth: 0,
+    borderStyle: 'solid',
+    boxSizing: 'border-box',
+    display: 'flex',
+    flexBasis: 'auto',
+    flexDirection: 'column',
+    flexShrink: 0,
+    margin: 0,
+    padding: 0,
+    position: 'relative',
+    // fix flexbox bugs
+    minHeight: 0,
+    minWidth: 0
+  }
+};
+
+export default Radium(View);

benchmarks/src/components/View/react-native-stylesheet.js

@@ -0,0 +1,35 @@
+/* eslint-disable react/prop-types */
+import React from 'react';
+import StyleSheet from 'react-native/apis/StyleSheet';
+import registry from 'react-native/apis/StyleSheet/registry';
+
+const emptyObject = {};
+
+class View extends React.Component {
+  render() {
+    const { style, ...other } = this.props;
+    const styleProps = registry.resolve([styles.root, style]) || emptyObject;
+    return <div {...other} {...styleProps} />;
+  }
+}
+
+const styles = StyleSheet.create({
+  root: {
+    alignItems: 'stretch',
+    borderWidth: 0,
+    borderStyle: 'solid',
+    boxSizing: 'border-box',
+    display: 'flex',
+    flexBasis: 'auto',
+    flexDirection: 'column',
+    flexShrink: 0,
+    margin: 0,
+    padding: 0,
+    position: 'relative',
+    // fix flexbox bugs
+    minHeight: 0,
+    minWidth: 0
+  }
+});
+
+export default View;

benchmarks/src/components/View/styled-components.js

@@ -0,0 +1,19 @@
+import styled from 'styled-components';
+
+const View = styled.div`
+  align-items: stretch;
+  border-width: 0;
+  border-style: solid;
+  box-sizing: border-box;
+  display: flex;
+  flex-basis: auto;
+  flex-direction: column;
+  flex-shrink: 0;
+  margin: 0;
+  padding: 0;
+  position: relative;
+  min-height: 0;
+  min-width: 0;
+`;
+
+export default View;

benchmarks/src/components/View/styles.css

@@ -0,0 +1,15 @@
+.initial {
+  align-items: stretch;
+  border-width: 0;
+  border-style: solid;
+  box-sizing: border-box;
+  display: flex;
+  flex-basis: auto;
+  flex-direction: column;
+  flex-shrink: 0;
+  margin: 0;
+  padding: 0;
+  position: relative;
+  min-height: 0;
+  min-width: 0;
+}

benchmarks/src/components/View/styletron.js

@@ -0,0 +1,33 @@
+/* eslint-disable react/prop-types */
+import classnames from 'classnames';
+import Styletron from 'styletron-client';
+import { injectStylePrefixed } from 'styletron-utils';
+import React from 'react';
+
+export const styletron = new Styletron();
+
+class View extends React.Component {
+  render() {
+    const { style, ...other } = this.props;
+    return <div {...other} className={classnames(viewStyle, ...style)} />;
+  }
+}
+
+const viewStyle = injectStylePrefixed(styletron, {
+  alignItems: 'stretch',
+  borderWidth: '0px',
+  borderStyle: 'solid',
+  boxSizing: 'border-box',
+  display: 'flex',
+  flexBasis: 'auto',
+  flexDirection: 'column',
+  flexShrink: '0',
+  margin: '0px',
+  padding: '0px',
+  position: 'relative',
+  // fix flexbox bugs
+  minHeight: '0px',
+  minWidth: '0px'
+});
+
+export default View;

benchmarks/src/components/theme.js

@@ -0,0 +1,40 @@
+const colors = {
+  blue: '#1B95E0',
+  lightBlue: '#71C9F8',
+  green: '#17BF63',
+  orange: '#F45D22',
+  purple: '#794BC4',
+  red: '#E0245E',
+  white: '#FFFFFF',
+  yellow: '#FFAD1F',
+  deepGray: '#657786',
+  fadedGray: '#E6ECF0',
+  faintGray: '#F5F8FA',
+  gray: '#AAB8C2',
+  lightGray: '#CCD6DD',
+  textBlack: '#14171A'
+};
+
+const fontSize = {
+  root: '14px',
+  // font scale
+  small: '0.85rem',
+  normal: '1rem',
+  large: '1.25rem'
+};
+
+const theme = {
+  colors,
+  fontFamily:
+    '-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, "Helvetica Neue", sans-serif, ' +
+    '"Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"', // emoji fonts
+  fontSize,
+  lineHeight: 1.3125,
+  spaceX: 0.6,
+  spaceY: 1.3125,
+  createLength(num, unit) {
+    return `${num}${unit}`;
+  }
+};
+
+export default theme;

benchmarks/src/css-modules.js

@@ -0,0 +1,9 @@
+import Box from './components/Box/css-modules';
+import View from './components/View/css-modules';
+
+const api = {
+  Box,
+  View
+};
+
+export default api;

benchmarks/src/glamor.js

@@ -0,0 +1,7 @@
+import Box from './components/Box/glamor';
+import View from './components/View/glamor';
+
+export default {
+  Box,
+  View
+};

benchmarks/src/jss.js

@@ -0,0 +1,9 @@
+import Box from './components/Box/jss';
+import View from './components/View/jss';
+
+const api = {
+  Box,
+  View
+};
+
+export default api;

benchmarks/src/radium.js

@@ -0,0 +1,9 @@
+import Box from './components/Box/radium';
+import View from './components/View/radium';
+
+const api = {
+  Box,
+  View
+};
+
+export default api;

benchmarks/src/react-native-stylesheet.js

@@ -0,0 +1,9 @@
+import Box from './components/Box/react-native-stylesheet';
+import View from './components/View/react-native-stylesheet';
+
+const api = {
+  Box,
+  View
+};
+
+export default api;

benchmarks/src/react-native.js

@@ -0,0 +1,9 @@
+import Box from './components/Box/react-native';
+import Tweet from './components/Tweet';
+import { View } from 'react-native';
+
+export default {
+  Box,
+  Tweet,
+  View
+};

benchmarks/src/reactxp.js

@@ -0,0 +1,7 @@
+import Box from './components/Box/reactxp';
+import { View } from 'reactxp';
+
+export default {
+  Box,
+  View
+};

benchmarks/src/styled-components-primitives.js

@@ -0,0 +1,7 @@
+import Box from './components/Box/styled-components';
+import styled from 'styled-components/primitives';
+
+export default {
+  Box,
+  View: styled.View
+};

benchmarks/src/styled-components.js

@@ -0,0 +1,7 @@
+import Box from './components/Box/styled-components';
+import View from './components/View/styled-components';
+
+export default {
+  Box,
+  View
+};

benchmarks/src/styletron.js

@@ -0,0 +1,7 @@
+import Box from './components/Box/styletron';
+import View from './components/View/styletron';
+
+export default {
+  Box,
+  View
+};

benchmarks/tests/renderDeepTree.js

@@ -0,0 +1,14 @@
+import createRenderBenchmark from '../createRenderBenchmark';
+import NestedTree from '../src/components/NestedTree';
+import React from 'react';
+
+const renderDeepTree = (label, components) =>
+  createRenderBenchmark({
+    name: `Deep tree [${label}]`,
+    runs: 20,
+    getElement() {
+      return <NestedTree breadth={3} components={components} depth={6} id={0} wrap={1} />;
+    }
+  });
+
+export default renderDeepTree;

benchmarks/tests/renderTweet.js

@@ -0,0 +1,113 @@
+import createRenderBenchmark from '../createRenderBenchmark';
+import Tweet from '../src/components/Tweet';
+import React from 'react';
+
+const tweet1 = {
+  favorite_count: 30,
+  favorited: true,
+  id: '834889712556875776',
+  lang: 'en',
+  retweet_count: 6,
+  retweeted: false,
+  textParts: [
+    {
+      prefix: '',
+      text: 'Living burrito to burrito '
+    },
+    {
+      emoji: 'https://abs-0.twimg.com/emoji/v2/svg/1f32f.svg',
+      isEmoji: true,
+      prefix: '',
+      text: '🌯'
+    },
+    {
+      emoji: 'https://abs-0.twimg.com/emoji/v2/svg/1f32f.svg',
+      isEmoji: true,
+      prefix: '',
+      text: '🌯'
+    },
+    {
+      emoji: 'https://abs-0.twimg.com/emoji/v2/svg/1f32f.svg',
+      isEmoji: true,
+      prefix: '',
+      text: '🌯'
+    }
+  ],
+  timestamp: 'Feb 23',
+  user: {
+    fullName: 'Nicolas',
+    screenName: 'necolas',
+    profileImageUrl: 'https://pbs.twimg.com/profile_images/804365942360719360/dQnPejph_normal.jpg'
+  }
+};
+
+const tweet2 = {
+  favorite_count: 84,
+  favorited: false,
+  id: '730896800060579840',
+  lang: 'en',
+  media: {
+    source: {
+      uri: 'https://pbs.twimg.com/media/CiSqvsJVEAAtLZ1.jpg',
+      width: 600,
+      height: 338
+    }
+  },
+  retweet_count: 4,
+  retweeted: true,
+  textParts: [
+    {
+      prefix: '',
+      text: 'Presenting '
+    },
+    {
+      displayUrl: 'mobile.twitter.com',
+      expandedUrl: 'https://mobile.twitter.com',
+      isEntity: true,
+      isUrl: true,
+      linkRelation: 'nofollow',
+      prefix: '',
+      text: '',
+      textDirection: 'ltr',
+      url: 'https://t.co/4hRCAxiUUG'
+    },
+    {
+      prefix: '',
+      text: ' with '
+    },
+    {
+      isEntity: true,
+      isMention: true,
+      prefix: '@',
+      text: 'davidbellona',
+      textDirection: 'ltr',
+      url: '/davidbellona'
+    },
+    {
+      prefix: '',
+      text: " at Twitter's all hands meeting "
+    }
+  ],
+  timestamp: 'May 12',
+  user: {
+    fullName: 'Nicolas',
+    screenName: 'necolas',
+    profileImageUrl: 'https://pbs.twimg.com/profile_images/804365942360719360/dQnPejph_normal.jpg'
+  }
+};
+
+const renderTweet = label =>
+  createRenderBenchmark({
+    name: `Tweet [${label}]`,
+    runs: 10,
+    getElement() {
+      return (
+        <div style={{ width: 500 }}>
+          <Tweet tweet={tweet1} />
+          <Tweet tweet={tweet2} />
+        </div>
+      );
+    }
+  });
+
+export default renderTweet;

benchmarks/tests/renderWideTree.js

@@ -0,0 +1,14 @@
+import createRenderBenchmark from '../createRenderBenchmark';
+import NestedTree from '../src/components/NestedTree';
+import React from 'react';
+
+const renderWideTree = (label, components) =>
+  createRenderBenchmark({
+    name: `Wide tree [${label}]`,
+    runs: 20,
+    getElement() {
+      return <NestedTree breadth={10} components={components} depth={3} id={0} wrap={4} />;
+    }
+  });
+
+export default renderWideTree;

benchmarks/webpack.config.js

@@ -0,0 +1,55 @@
+const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
+const path = require('path');
+const webpack = require('webpack');
+
+module.exports = {
+  context: __dirname,
+  entry: './index',
+  output: {
+    path: path.resolve(__dirname, 'dist'),
+    filename: 'performance.bundle.js'
+  },
+  module: {
+    rules: [
+      {
+        test: /\.css$/,
+        use: [
+          'style-loader',
+          {
+            loader: 'css-loader',
+            options: { module: true, localIdentName: '[hash:base64:8]' }
+          }
+        ]
+      },
+      {
+        test: /\.js$/,
+        exclude: /node_modules/,
+        use: {
+          loader: 'babel-loader',
+          options: { cacheDirectory: true }
+        }
+      }
+    ]
+  },
+  plugins: [
+    new BundleAnalyzerPlugin({
+      analyzerMode: 'static',
+      openAnalyzer: false
+    }),
+    new webpack.DefinePlugin({
+      'process.env.NODE_ENV': JSON.stringify('production')
+    }),
+    new webpack.optimize.UglifyJsPlugin({
+      compress: {
+        dead_code: true,
+        screw_ie8: true,
+        warnings: false
+      }
+    })
+  ],
+  resolve: {
+    alias: {
+      'react-native': path.join(__dirname, '../src')
+    }
+  }
+};

core.js

@@ -1 +1 @@
-module.exports = require('./dist/core')
+module.exports = require('./dist/core');

docs/apis/AppRegistry.md

@@ -3,9 +3,7 @@
 `AppRegistry` is the control point for registering, running, prerendering, and
 unmounting all apps. App root components should register themselves with
 `AppRegistry.registerComponent`. Apps can be run by invoking
-`AppRegistry.runApplication`, and prerendered by invoking
-`AppRegistry.prerenderApplication` (see the [client and server rendering
-guide](../guides/rendering.md) for more details).
+`AppRegistry.runApplication` (see the [getting started guide](../guides/getting-started.md) for more details).
 
 To "stop" an application when a view should be destroyed, call
 `AppRegistry.unmountApplicationComponentAtRootTag` with the tag that was passed
@@ -16,8 +14,7 @@ into `runApplication`. These should always be used as a pair.
 (web) static **getApplication**(appKey:string, appParameters: object)
 
 Returns the given application element. Use this for server-side rendering.
-Return object is of type `{ element: ReactElement; stylesheet: ReactElement }`.
-It's recommended that you use `sheetsheet` to render the style sheet in an app
+Return object is of type `{ element: ReactElement; stylesheets: [ ReactElement ] }`.
 
 static **registerConfig**(config: Array<AppConfig>)
 
@@ -43,6 +40,9 @@ Runs the application that was registered under `appKey`. The `appParameters`
 must include the `rootTag` into which the application is rendered, and
 optionally any `initialProps`.
 
+On web, if the `rootTag` is a sub-section of your application it should be
+styled as `position:relative` and given an explicit height.
+
 static **unmountApplicationComponentAtRootTag**(rootTag: HTMLElement)
 
 To "stop" an application when a view should be destroyed, call

docs/apis/Clipboard.md

@@ -0,0 +1,16 @@
+# Clipboard
+
+Clipboard gives you an interface for setting to the clipboard. (Getting
+clipboard content is not supported on web.)
+
+## Methods
+
+static **getString**()
+
+Returns a `Promise` of an empty string.
+
+static **setString**(content: string): boolean
+
+Copies a string to the clipboard. On web, some browsers may not support copying
+to the clipboard, therefore, this function returns a boolean to indicate if the
+copy was successful.

docs/apis/NativeMethods.md

@@ -1,42 +0,0 @@
-# NativeMethods
-
-React Native for Web provides several methods to directly access the underlying
-DOM node. This can be useful in cases when you want to focus a view or measure
-its on-screen dimensions, for example.
-
-The methods described are available on most of the default components provided
-by React Native for Web. Note, however, that they are *not* available on the
-composite components that you define in your own app. For more information, see
-[Direct Manipulation](../guides/direct-manipulation.md).
-
-## Methods
-
-**blur**()
-
-Removes focus from an input or view. This is the opposite of `focus()`.
-
-**focus**()
-
-Requests focus for the given input or view. The exact behavior triggered will
-depend the type of view.
-
-**measure**(callback: (x, y, width, height, pageX, pageY) => void)
-
-For a given view, `measure` determines the offset relative to the parent view,
-width, height, and the offset relative to the viewport. Returns the values via
-an async callback.
-
-Note that these measurements are not available until after the rendering has
-been completed.
-
-**measureLayout**(relativeToNativeNode: DOMNode, onSuccess: (x, y, width, height) => void)
-
-Like `measure`, but measures the view relative to another view, specified as
-`relativeToNativeNode`. This means that the returned `x`, `y` are relative to
-the origin `x`, `y` of the ancestor view.
-
-**setNativeProps**(nativeProps: Object)
-
-This function sends props straight to the underlying DOM node. See the [direct
-manipulation](../guides/direct-manipulation.md) guide for cases where
-`setNativeProps` should be used.

docs/apis/NetInfo.md

@@ -32,7 +32,7 @@ static **removeEventListener**(eventName: ChangeEventName, handler: Function)
 **isConnected**: bool = true
 
 Available on all user agents. Asynchronously fetch a boolean to determine
-internet connectivity.
+internet connectivity. Use this if you are only interested with whether the device has internet connectivity.
 
 **isConnected.addEventListener**(eventName: ChangeEventName, handler: Function)
 

docs/apis/StyleSheet.md

@@ -1,9 +1,10 @@
 # StyleSheet
 
 The `StyleSheet` abstraction converts predefined styles to (vendor-prefixed)
-CSS without requiring a compile-time step. Some styles cannot be resolved
-outside of the render loop and are applied as inline styles. Read more about
-[how to style your application](../guides/style.md).
+CSS without requiring a compile-time step. Styles that cannot be resolved
+outside of the render loop (e.g., dynamic positioning) are usually applied as
+inline styles. Read more about [how to style your
+application](../guides/style.md).
 
 ## Methods
 
@@ -15,9 +16,10 @@ Each key of the object passed to `create` must define a style object.
 
 Flattens an array of styles into a single style object.
 
-**render**: function
+(web) **getStyleSheets**: function
 
-Returns a React `<style>` element for use in server-side rendering.
+Returns an array of stylesheets (`{ id, textContent }`). Useful for
+compile-time or server-side rendering.
 
 ## Properties
 

docs/components/ActivityIndicator.md

@@ -4,19 +4,19 @@
 
 [...View props](./View.md)
 
-**animating**: bool = true
+**animating**: boolean = true
 
 Whether to show the indicator or hide it.
 
-**color**: string = '#1976D2'
+**color**: ?color = '#1976D2'
 
 The foreground color of the spinner.
 
-**hidesWhenStopped**: bool = true
+**hidesWhenStopped**: ?boolean = true
 
 Whether the indicator should hide when not animating.
 
-**size**: oneOf('small, 'large') | number = 'small'
+**size**: ?enum('small, 'large') | number = 'small'
 
 Size of the indicator. Small has a height of `20`, large has a height of `36`.
 

docs/components/Button.md

@@ -0,0 +1,43 @@
+# Button
+
+A basic button component. Supports a minimal level of customization. You can
+build your own custom button using `TouchableOpacity` or
+`TouchableNativeFeedback`.
+
+## Props
+
+**accessibilityLabel**: ?string
+
+Overrides the text that's read by a screen reader when the user interacts
+with the element.
+
+**color**: ?string
+
+Background color of the button.
+
+**disabled**: ?boolean
+
+If `true`, disable all interactions for this element.
+
+**onPress**: function
+
+This function is called on press.
+
+**testID**: ?string
+
+Used to locate this view in end-to-end tests.
+
+**title**: string
+
+Text to display inside the button.
+
+## Examples
+
+```js
+<Button
+  accessibilityLabel="Learn more about this purple button"
+  color="#841584"
+  onPress={onPressLearnMore}
+  title="Learn More"
+/>
+```

docs/components/Image.md

@@ -9,65 +9,66 @@ Unsupported React Native props:
 
 ## Props
 
-**accessibilityLabel**: string
+**accessibilityLabel**: ?string
 
 The text that's read by a screenreader when someone interacts with the image.
 
-**accessible**: bool
+**accessible**: ?boolean
 
-When `false`, the view is hidden from screenreaders. Default: `true`.
+When `true`, indicates the image is an accessibility element.
 
-**children**: any
+**children**: ?any
 
 Content to display over the image.
 
-**defaultSource**: { uri: string }
+**defaultSource**: ?object
 
-An image to display as a placeholder while downloading the final image off the network.
+An image to display as a placeholder while downloading the final image off the
+network. `{ uri: string, width, height }`
 
-**onError**: function
+**onError**: ?function
 
 Invoked on load error with `{nativeEvent: {error}}`.
 
-**onLayout**: function
+**onLayout**: ?function
 
 Invoked on mount and layout changes with `{ nativeEvent: { layout: { x, y, width,
 height } } }`, where `x` and `y` are the offsets from the parent node.
 
-**onLoad**: function
+**onLoad**: ?function
 
 Invoked when load completes successfully.
 
-**onLoadEnd**: function
+**onLoadEnd**: ?function
 
 Invoked when load either succeeds or fails,
 
-**onLoadStart**: function
+**onLoadStart**: ?function
 
 Invoked on load start.
 
-**resizeMode**: oneOf('center', 'contain', 'cover', 'none', 'repeat', 'stretch') = 'cover'
+**resizeMode**: ?enum('center', 'contain', 'cover', 'none', 'repeat', 'stretch') = 'cover'
 
 Determines how to resize the image when the frame doesn't match the raw image
 dimensions.
 
-**source**: { uri: string }
+**source**: ?object
 
 `uri` is a string representing the resource identifier for the image, which
-could be an http address or a base64 encoded image.
+could be an http address or a base64 encoded image. `{ uri: string, width, height }`
 
-**style**: style
+**style**: ?style
 
 + ...[View#style](./View.md)
 + `resizeMode`
 
-**testID**: string
+**testID**: ?string
 
 Used to locate a view in end-to-end tests.
 
 ## Properties
 
-static **resizeMode**: Object
+static **resizeMode**: object
 
 Example usage:
 
@@ -75,6 +76,23 @@ Example usage:
 <Image resizeMode={Image.resizeMode.contain} />
 ```
 
+## Methods
+
+static **getSize**(uri: string, success: (width, height) => {}, failure: function)
+
+Retrieve the width and height (in pixels) of an image prior to displaying it.
+This method can fail if the image cannot be found, or fails to download.
+
+(In order to retrieve the image dimensions, the image may first need to be
+loaded or downloaded, after which it will be cached. This means that in
+principle you could use this method to preload images, however it is not
+optimized for that purpose, and may in future be implemented in a way that does
+not fully load/download the image data.)
+
+static **prefetch**(url: string): Promise
+
+Prefetches a remote image for later use by downloading it.
+
 ## Examples
 
 ```js

docs/components/ListView.md

@@ -1,34 +0,0 @@
-# ListView
-
-TODO
-
-## Props
-
-[...ScrollView props](./ScrollView.md)
-
-**children**: any
-
-Content to display over the image.
-
-**style**: style
-
-+ ...[View#style](View.md)
-
-## Examples
-
-```js
-import React, { Component, PropTypes } from 'react'
-import { ListView } from 'react-native'
-
-export default class ListViewExample extends Component {
-  static propTypes = {}
-
-  static defaultProps = {}
-
-  render() {
-    return (
-      <ListView />
-    )
-  }
-}
-```

docs/components/ProgressBar.md

@@ -6,18 +6,22 @@ Display an activity progress bar.
 
 [...View props](./View.md)
 
-**color**: string = '#1976D2'
+**color**: ?string = '#1976D2'
 
 Color of the progress bar.
 
-**indeterminate**: bool = true
+**indeterminate**: ?boolean = true
 
 Whether the progress bar will show indeterminate progress.
 
-**progress**: number
+**progress**: ?number
 
 The progress value (between 0 and 1).
 
-(web) **trackColor**: string = 'transparent'
+**testID**: ?string
+
+Used to locate this view in end-to-end tests.
+
+(web) **trackColor**: ?string = 'transparent'
 
 Color of the track bar.

docs/components/ScrollView.md

@@ -9,17 +9,17 @@ view directly (discouraged) or make sure all parent views have bounded height
 
 [...View props](./View.md)
 
-**contentContainerStyle**: style
+**contentContainerStyle**: ?style
 
 These styles will be applied to the scroll view content container which wraps
 all of the child views.
 
-**horizontal**: bool = false
+**horizontal**: ?boolean = false
 
-When true, the scroll view's children are arranged horizontally in a row
+When `true`, the scroll view's children are arranged horizontally in a row
 instead of vertically in a column.
 
-**keyboardDismissMode**: oneOf('none', 'on-drag') = 'none'
+**keyboardDismissMode**: ?enum('none', 'on-drag') = 'none'
 
 Determines whether the keyboard gets dismissed in response to a scroll drag.
 
@@ -27,32 +27,44 @@ Determines whether the keyboard gets dismissed in response to a scroll drag.
 * `on-drag`, the keyboard is dismissed when a drag begins.
 * `interactive` (not supported on web; same as `none`)
 
-**onContentSizeChange**: function
+**onContentSizeChange**: ?function
 
 Called when scrollable content view of the `ScrollView` changes. It's
 implemented using the `onLayout` handler attached to the content container
 which this `ScrollView` renders.
 
-**onScroll**: function
+**onScroll**: ?function
 
 Fires at most once per frame during scrolling. The frequency of the events can
 be contolled using the `scrollEventThrottle` prop.
 
-**refreshControl**: element
+Invoked on scroll with the following event:
+
+```js
+{
+  nativeEvent: {
+    contentOffset: { x, y },
+    contentSize: { height, width },
+    layoutMeasurement: { height, width }
+  }
+}
+```
+
+**refreshControl**: ?element
 
 TODO
 
 A [RefreshControl](../RefreshControl) component, used to provide
 pull-to-refresh functionality for the `ScrollView`.
 
-**scrollEnabled**: bool = true
+**scrollEnabled**: ?boolean = true
 
 When false, the content does not scroll.
 
-**scrollEventThrottle**: number = 0
+**scrollEventThrottle**: ?number = 0
 
-This controls how often the scroll event will be fired while scrolling (in
-events per seconds). A higher number yields better accuracy for code that is
+This controls how often the scroll event will be fired while scrolling (as a
+time interval in ms). A lower number yields better accuracy for code that is
 tracking the scroll position, but can lead to scroll performance problems. The
 default value is `0`, which means the scroll event will be sent only once each
 time the view is scrolled.
@@ -104,7 +116,7 @@ export default class ScrollViewExample extends Component {
         contentContainerStyle={styles.container}
         horizontal
         onScroll={(e) => this.onScroll(e)}
-        scrollEventThrottle={60}
+        scrollEventThrottle={100}
         style={styles.root}
       />
     )

docs/components/Switch.md

@@ -9,31 +9,31 @@ supplied `value` prop instead of the expected result of any user actions.
 
 [...View props](./View.md)
 
-**disabled**: bool = false
+**disabled**: ?boolean = false
 
 If `true` the user won't be able to interact with the switch.
 
-**onValueChange**: func
+**onValueChange**: ?function
 
 Invoked with the new value when the value changes.
 
-**value**: bool = false
+**value**: ?boolean = false
 
 The value of the switch. If `true` the switch will be turned on.
 
-(web) **activeThumbColor**: color = #009688
+(web) **activeThumbColor**: ?color = #009688
 
 The color of the thumb grip when the switch is turned on.
 
-(web) **activeTrackColor**: color = #A3D3CF
+(web) **activeTrackColor**: ?color = #A3D3CF
 
 The color of the track when the switch is turned on.
 
-(web) **thumbColor**: color = #FAFAFA
+(web) **thumbColor**: ?color = #FAFAFA
 
 The color of the thumb grip when the switch is turned off.
 
-(web) **trackColor**: color = #939393
+(web) **trackColor**: ?color = #939393
 
 The color of the track when the switch is turned off.
 

docs/components/Text.md

@@ -16,76 +16,90 @@ Unsupported React Native props:
 
 NOTE: `Text` will transfer all other props to the rendered HTML element.
 
-(web) **accessibilityLabel**: string
+(web) **accessibilityLabel**: ?string
 
-Defines the text available to assistive technologies upon interaction with the
-element. (This is implemented using `aria-label`.)
+Overrides the text that's read by a screen reader when the user interacts
+with the element. (This is implemented using `aria-label`.)
 
-(web) **accessibilityRole**: oneOf(roles)
+See the [Accessibility guide](../guides/accessibility) for more information.
+
+(web) **accessibilityRole**: ?oneOf(roles)
 
 Allows assistive technologies to present and support interaction with the view
 in a manner that is consistent with user expectations for similar views of that
 type. For example, marking a touchable view with an `accessibilityRole` of
 `button`. (This is implemented using [ARIA roles](http://www.w3.org/TR/wai-aria/roles#role_definitions)).
 
-Note: Avoid changing `accessibilityRole` values over time or after user
-actions. Generally, accessibility APIs do not provide a means of notifying
-assistive technologies of a `role` value change.
+See the [Accessibility guide](../guides/accessibility) for more information.
 
-**accessible**: bool = true
+**accessible**: ?boolean
 
-When `false`, the text is hidden from assistive technologies. (This is
-implemented using `aria-hidden`.)
+When `true`, indicates that the view is an accessibility element (i.e.,
+focusable) and groups its child content. By default, all the touchable elements
+and elements with `accessibilityRole` of `button` and `link` are accessible.
+(This is implemented using `tabindex`.)
 
-**children**: any
+See the [Accessibility guide](../guides/accessibility) for more information.
+
+**children**: ?any
 
 Child content.
 
-**numberOfLines**: number
+**importantForAccessibility**: ?enum('auto', 'no-hide-descendants', 'yes')
+
+A value of `no` will remove the element from the tab flow.
+
+A value of `no-hide-descendants` will hide the element and its children from
+assistive technologies. (This is implemented using `aria-hidden`.)
+
+See the [Accessibility guide](../guides/accessibility) for more information.
+
+**numberOfLines**: ?number
 
 Truncates the text with an ellipsis after this many lines. Currently only supports `1`.
 
-**onLayout**: function
+**onLayout**: ?function
 
 Invoked on mount and layout changes with `{ nativeEvent: { layout: { x, y, width,
 height } } }`, where `x` and `y` are the offsets from the parent node.
 
-**onPress**: function
+**onPress**: ?function
 
 This function is called on press.
 
-**selectable**: bool = true
+**selectable**: ?boolean
 
-Lets the user select the text.
+When `false`, the text is not selectable.
 
-**style**: style
+**style**: ?style
 
 + ...[View#style](View.md)
 + `color`
 + `fontFamily`
++ `fontFeatureSettings` ‡
 + `fontSize`
 + `fontStyle`
 + `fontWeight`
 + `letterSpacing`
 + `lineHeight`
-+ `textAlign`‡
++ `textAlign`
 + `textAlignVertical`
 + `textDecorationLine`
-+ `textOverflow`
-+ `textRendering`
++ `textIndent` ‡
++ `textOverflow` ‡
++ `textRendering` ‡
 + `textShadowColor`
-+ `textShadowOffset`‡
++ `textShadowOffset`
 + `textShadowRadius`
-+ `textTransform`
-+ `unicodeBidi`
++ `textTransform` ‡
++ `unicodeBidi` ‡
 + `whiteSpace`
-+ `wordWrap`
-+ `writingDirection`‡
++ `wordWrap` ‡
++ `writingDirection`
 
-‡ This property can be suffixed with `$noI18n` to prevent automatic
-bidi-flipping in RTL mode. This is only supported if `Platform.OS === 'web'`.
+‡ web only.
 
-**testID**: string
+**testID**: ?string
 
 Used to locate this view in end-to-end tests.
 

docs/components/TextInput.md

@@ -18,7 +18,7 @@ Unsupported React Native props:
 
 [...View props](./View.md)
 
-**autoCapitalize**: oneOf('characters', 'none', 'sentences', 'words') = 'sentences'
+**autoCapitalize**: ?enum('characters', 'none', 'sentences', 'words') = 'sentences'
 
 Automatically capitalize certain characters (only available in Chrome and iOS Safari).
 
@@ -27,21 +27,21 @@ Automatically capitalize certain characters (only available in Chrome and iOS Sa
 * `sentences`: Automatically capitalize the first letter of sentences.
 * `words`: Automatically capitalize the first letter of words.
 
-(web) **autoComplete**: string
+(web) **autoComplete**: ?string
 
 Indicates whether the value of the control can be automatically completed by
 the browser. [Accepted values](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input).
 
-**autoCorrect**: bool = true
+**autoCorrect**: ?boolean = true
 
 Automatically correct spelling mistakes  (only available in iOS Safari).
 
-**autoFocus**: bool = false
+**autoFocus**: ?boolean = false
 
 If `true`, focuses the input on `componentDidMount`. Only the first form element
 in a document with `autofocus` is focused.
 
-**blurOnSubmit**: bool
+**blurOnSubmit**: ?boolean
 
 If `true`, the text field will blur when submitted. The default value is `true`
 for single-line fields and `false` for multiline fields. Note, for multiline
@@ -49,108 +49,107 @@ fields setting `blurOnSubmit` to `true` means that pressing return will blur
 the field and trigger the `onSubmitEditing` event instead of inserting a
 newline into the field.
 
-**clearTextOnFocus**: bool = false
+**clearTextOnFocus**: ?boolean = false
 
 If `true`, clears the text field automatically when focused.
 
-**defaultValue**: string
+**defaultValue**: ?string
 
 Provides an initial value that will change when the user starts typing. Useful
 for simple use-cases where you don't want to deal with listening to events and
 updating the `value` prop to keep the controlled state in sync.
 
-**editable**: bool = true
+**editable**: ?boolean = true
 
 If `false`, text is not editable (i.e., read-only).
 
-**keyboardType**: oneOf('default', 'email-address', 'numeric', 'phone-pad', 'search', 'url', 'web-search') = 'default'
+**keyboardType**: enum('default', 'email-address', 'numeric', 'phone-pad', 'search', 'url', 'web-search') = 'default'
 
 Determines which keyboard to open. (NOTE: Safari iOS requires an ancestral
 `<form action>` element to display the `search` keyboard).
 
 (Not available when `multiline` is `true`.)
 
-**maxLength**: number
+**maxLength**: ?number
 
 Limits the maximum number of characters that can be entered.
 
-(web) **maxNumberOfLines**: number = numberOfLines
-
-Limits the maximum number of lines for a multiline `TextInput`.
-
-(Requires `multiline` to be `true`.)
-
-**multiline**: bool = false
+**multiline**: ?boolean = false
 
 If true, the text input can be multiple lines.
 
-**numberOfLines**: number = 2
+**numberOfLines**: ?number = 2
 
-Sets the initial number of lines for a multiline `TextInput`.
+Sets the number of lines for a multiline `TextInput`.
 
 (Requires `multiline` to be `true`.)
 
-**onBlur**: function
+**onBlur**: ?function
 
 Callback that is called when the text input is blurred.
 
-**onChange**: function
+**onChange**: ?function
 
 Callback that is called when the text input's text changes.
 
-**onChangeText**: function
+**onChangeText**: ?function
 
 Callback that is called when the text input's text changes. The text is passed
 as an argument to the callback handler.
 
-**onFocus**: function
+**onFocus**: ?function
 
 Callback that is called when the text input is focused.
 
-**onKeyPress**: function
+**onKeyPress**: ?function
 
-Callback that is called when a key is pressed. Pressed key value is passed as
-an argument to the callback handler. Fires before `onChange` callbacks.
+Callback that is called when a key is pressed. This will be called with `{
+nativeEvent: { key: keyValue } }` where keyValue is 'Enter` or 'Backspace' for
+respective keys and the typed-in character otherwise including ' ' for space.
+Modifier keys are also included in the nativeEvent. Fires before onChange
+callbacks.
 
-**onSelectionChange**: function
+**onSelectionChange**: ?function
 
 Callback that is called when the text input's selection changes. This will be called with
 `{ nativeEvent: { selection: { start, end } } }`.
 
-**onSubmitEditing**: function
+**onSubmitEditing**: ?function
 
 Callback that is called when the keyboard's submit button is pressed.
 
-**placeholder**: string
+**placeholder**: ?string
 
 The string that will be rendered in an empty `TextInput` before text has been
 entered.
 
-**secureTextEntry**: bool = false
+**secureTextEntry**: ?boolean = false
 
 If true, the text input obscures the text entered so that sensitive text like
 passwords stay secure.
 
 (Not available when `multiline` is `true`.)
 
-**selection**: { start: number, end: ?number }
+**selection**: ?{ start: number, end: ?number }
 
 The start and end of the text input's selection. Set start and end to the same value to position the cursor.
 
-**selectTextOnFocus**: bool = false
+**selectTextOnFocus**: ?boolean = false
 
 If `true`, all text will automatically be selected on focus.
 
-**style**: style
+**style**: ?style
 
 + ...[Text#style](./Text.md)
-+ `outline`
++ `resize` ‡
 
-**testID**: string
+‡ web only.
+
+**testID**: ?string
 
 Used to locate this view in end-to-end tests.
 
-**value**: string
+**value**: ?string
 
 The value to show for the text input. `TextInput` is a controlled component,
 which means the native `value` will be forced to match this prop if provided.

docs/components/TouchableWithoutFeedback.md

@@ -11,60 +11,33 @@ several child components, wrap them in a View.
 
 [...View props](./View.md)
 
-**accessibilityLabel**: string
-
-Overrides the text that's read by the screen reader when the user interacts
-with the element.
-
-(web) **accessibilityRole**: oneOf(roles) = 'button'
-
-Allows assistive technologies to present and support interaction with the view
-
-**accessible**: bool = true
-
-When `false`, the view is hidden from screenreaders.
-
-**children**: View
-
-**delayLongPress**: number
+**delayLongPress**: ?number
 
 Delay in ms, from `onPressIn`, before `onLongPress` is called.
 
-**delayPressIn**: number
+**delayPressIn**: ?number
 
 Delay in ms, from the start of the touch, before `onPressIn` is called.
 
-**delayPressOut**: number
+**delayPressOut**: ?number
 
 Delay in ms, from the release of the touch, before `onPressOut` is called.
 
-**disabled**: bool
+**disabled**: ?boolean
 
-If true, disable all interactions for this component.
+If `true`, disable all interactions for this component.
 
-**hitSlop**: `{top: number, left: number, bottom: number, right: number}`
+**onLongPress**: ?function
 
-This defines how far your touch can start away from the button. This is added
-to `pressRetentionOffset` when moving off of the button. **NOTE**: The touch
-area never extends past the parent view bounds and the z-index of sibling views
-always takes precedence if a touch hits two overlapping views.
-
-**onLayout**: function
-
-Invoked on mount and layout changes with `{ nativeEvent: { layout: { x, y, width,
-height } } }`, where `x` and `y` are the offsets from the parent node.
-
-**onLongPress**: function
-
-**onPress**: function
+**onPress**: ?function
 
 Called when the touch is released, but not if cancelled (e.g. by a scroll that steals the responder lock).
 
-**onPressIn**: function
+**onPressIn**: ?function
 
-**onPressOut**: function
+**onPressOut**: ?function
 
-**pressRetentionOffset**: `{top: number, left: number, bottom: number, right: number}`
+**pressRetentionOffset**: ?`{top: number, left: number, bottom: number, right: number}`
 
 When the scroll view is disabled, this defines how far your touch may move off
 of the button, before deactivating the button. Once deactivated, try moving it

docs/components/View.md

@@ -7,21 +7,20 @@ inside another `View` and has 0-to-many children of any type.
 Also, refer to React Native's documentation about the [Gesture Responder
 System](http://facebook.github.io/react-native/releases/0.22/docs/gesture-responder-system.html).
 
-Unsupported React Native props:
-`onAccessibilityTap`,
-`hitSlop`,
-`onMagicTap`
+Unsupported React Native props: `collapsable`, `onAccessibilityTap`, `onMagicTap`.
 
 ## Props
 
 NOTE: `View` will transfer all other props to the rendered HTML element.
 
-**accessibilityLabel**: string
+**accessibilityLabel**: ?string
 
-Defines the text available to assistive technologies upon interaction with the
-element. (This is implemented using `aria-label`.)
+Overrides the text that's read by a screen reader when the user interacts
+with the element. (This is implemented using `aria-label`.)
 
-**accessibilityLiveRegion**: oneOf('assertive', 'off', 'polite') = 'off'
+See the [Accessibility guide](../guides/accessibility.md) for more information.
+
+**accessibilityLiveRegion**: ?enum('assertive', 'none', 'polite')
 
 Indicates to assistive technologies whether to notify the user when the view
 changes. The values of this attribute are expressed in degrees of importance.
@@ -30,122 +29,196 @@ priority. When regions are specified as `assertive`, assistive technologies
 will interrupt and immediately notify the user. (This is implemented using
 [`aria-live`](http://www.w3.org/TR/wai-aria/states_and_properties#aria-live).)
 
-(web) **accessibilityRole**: oneOf(roles)
+See the [Accessibility guide](../guides/accessibility.md) for more information.
+
+(web) **accessibilityRole**: ?enum(roles)
 
 Allows assistive technologies to present and support interaction with the view
 in a manner that is consistent with user expectations for similar views of that
 type. For example, marking a touchable view with an `accessibilityRole` of
 `button`. (This is implemented using [ARIA roles](http://www.w3.org/TR/wai-aria/roles#role_definitions)).
 
-Note: Avoid changing `accessibilityRole` values over time or after user
-actions. Generally, accessibility APIs do not provide a means of notifying
-assistive technologies of a `role` value change.
+See the [Accessibility guide](../guides/accessibility.md) for more information.
 
-**accessible**: bool = true
+**accessible**: ?boolean
 
-When `false`, the view is hidden from assistive technologies. (This is
-implemented using `aria-hidden`.)
+When `true`, indicates that the view is an accessibility element (i.e.,
+focusable) and groups its child content. By default, all the touchable elements
+and elements with `accessibilityRole` of `button` and `link` are accessible.
+(This is implemented using `tabindex`.)
 
-**onLayout**: function
+See the [Accessibility guide](../guides/accessibility.md) for more information.
+
+**children**: ?element
+
+Child content.
+
+**hitSlop**: ?object
+
+This defines how far a touch event can start away from the view (in pixels).
+Typical interface guidelines recommend touch targets that are at least 30 - 40
+points/density-independent pixels.
+
+For example, if a touchable view has a height of `20` the touchable height can
+be extended to `40` with `hitSlop={{top: 10, bottom: 10, left: 0, right: 0}}`.
+
+**importantForAccessibility**: ?enum('auto', 'no', 'no-hide-descendants', 'yes')
+
+A value of `no` will remove the element from the tab flow.
+
+A value of `no-hide-descendants` will hide the element and its children from
+assistive technologies. (This is implemented using `aria-hidden`.)
+
+See the [Accessibility guide](../guides/accessibility.md) for more information.
+
+**onLayout**: ?function
 
 Invoked on mount and layout changes with `{ nativeEvent: { layout: { x, y, width,
 height } } }`, where `x` and `y` are the offsets from the parent node.
 
-**onMoveShouldSetResponder**: function
+**onMoveShouldSetResponder**: ?function => boolean
 
-**onMoveShouldSetResponderCapture**: function
+Does this view want to "claim" touch responsiveness? This is called for every
+touch move on the `View` when it is not the responder.
 
-**onResponderGrant**: function
+**onMoveShouldSetResponderCapture**: ?function => boolean
 
-For most touch interactions, you'll simply want to wrap your component in
-`TouchableHighlight` or `TouchableOpacity`.
+If a parent `View` wants to prevent a child `View` from becoming responder on a
+move, it should have this handler return `true`.
 
-**onResponderMove**: function
+**onResponderGrant**: ?function
 
-**onResponderReject**: function
+The `View` is now responding to touch events. This is the time to highlight and
+show the user what is happening.  For most touch interactions, you'll simply
+want to wrap your component in `TouchableHighlight` or `TouchableOpacity`.
 
-**onResponderRelease**: function
+**onResponderMove**: ?function
 
-**onResponderTerminate**: function
+The user is moving their finger.
 
-**onResponderTerminationRequest**: function
+**onResponderReject**: ?function
 
-**onStartShouldSetResponder**: function
+Another responder is already active and will not release it to the `View`
+asking to be the responder.
 
-**onStartShouldSetResponderCapture**: function
+**onResponderRelease**: ?function
 
-**pointerEvents**: oneOf('auto', 'box-only', 'box-none', 'none') = 'auto'
+Fired at the end of the touch.
 
-Configure the `pointerEvents` of the view. The enhanced `pointerEvents` modes
-provided are not part of the CSS spec, therefore, `pointerEvents` is excluded
-from `style`.
+**onResponderTerminate**: ?function
+
+The responder has been taken from the `View`.
+
+**onResponderTerminationRequest**: ?function
+
+Some other `View` wants to become responder and is asking this `View` to
+release its responder. Returning `true` allows its release.
+
+**onStartShouldSetResponder**: ?function => boolean
+
+Does this view want to become responder on the start of a touch?
+
+**onStartShouldSetResponderCapture**: ?function => boolean
+
+If a parent `View` wants to prevent a child `View` from becoming the responder
+on a touch start, it should have this handler return `true`.
+
+**pointerEvents**: ?enum('auto', 'box-only', 'box-none', 'none') = 'auto'
+
+Controls whether the View can be the target of touch events. The enhanced
+`pointerEvents` modes provided are not part of the CSS spec, therefore,
+`pointerEvents` is excluded from `style`.
 
 `box-none` is the equivalent of:
 
 ```css
-.box-none { pointer-events: none }
-.box-none * { pointer-events: auto }
+.box-none { pointer-events: none !important; }
+.box-none > * { pointer-events: auto; }
 ```
 
 `box-only` is the equivalent of:
 
 ```css
-.box-only { pointer-events: auto }
-.box-only * { pointer-events: none }
+.box-only { pointer-events: auto !important; }
+.box-only > * { pointer-events: none; }
 ```
 
-**style**: style
+**style**: ?style
 
 + `alignContent`
 + `alignItems`
 + `alignSelf`
++ `animationDelay` ‡
++ `animationDirection` ‡
++ `animationDuration` ‡
++ `animationFillMode` ‡
++ `animationIterationCount` ‡
++ `animationName` ‡
++ `animationPlayState` ‡
++ `animationTimingFunction` ‡
 + `backfaceVisibility`
-+ `backgroundAttachment`
-+ `backgroundClip`
++ `backgroundAttachment` ‡
++ `backgroundBlendMode` ‡
++ `backgroundClip` ‡
 + `backgroundColor`
-+ `backgroundImage`
-+ `backgroundOrigin`
-+ `backgroundPosition`
-+ `backgroundRepeat`
-+ `backgroundSize`
++ `backgroundImage` ‡
++ `backgroundOrigin` ‡
++ `backgroundPosition` ‡
++ `backgroundRepeat` ‡
++ `backgroundSize` ‡
 + `borderColor` (single value)
 + `borderTopColor`
 + `borderBottomColor`
-+ `borderRightColor`‡
-+ `borderLeftColor`‡
++ `borderRightColor`
++ `borderLeftColor`
 + `borderRadius` (single value)
-+ `borderTopLeftRadius`‡
-+ `borderTopRightRadius`‡
-+ `borderBottomLeftRadius`‡
-+ `borderBottomRightRadius`‡
++ `borderTopLeftRadius`
++ `borderTopRightRadius`
++ `borderBottomLeftRadius`
++ `borderBottomRightRadius`
 + `borderStyle` (single value)
 + `borderTopStyle`
-+ `borderRightStyle`‡
++ `borderRightStyle`
 + `borderBottomStyle`
-+ `borderLeftStyle`‡
++ `borderLeftStyle`
 + `borderWidth` (single value)
 + `borderBottomWidth`
-+ `borderLeftWidth`‡
-+ `borderRightWidth`‡
++ `borderLeftWidth`
++ `borderRightWidth`
 + `borderTopWidth`
 + `bottom`
-+ `boxShadow`
++ `boxShadow` ‡
 + `boxSizing`
-+ `cursor`
++ `clip` ‡
++ `cursor` ‡
++ `display`
++ `filter` ‡
 + `flex` (number)
 + `flexBasis`
 + `flexDirection`
 + `flexGrow`
 + `flexShrink`
 + `flexWrap`
++ `gridAutoColumns` ‡
++ `gridAutoFlow` ‡
++ `gridAutoRows` ‡
++ `gridColumnEnd` ‡
++ `gridColumnGap` ‡
++ `gridColumnStart` ‡
++ `gridRowEnd` ‡
++ `gridRowGap` ‡
++ `gridRowStart` ‡
++ `gridTemplateColumns` ‡
++ `gridTemplateRows` ‡
++ `gridTemplateAreas` ‡
 + `height`
 + `justifyContent`
-+ `left`‡
++ `left`
 + `margin` (single value)
 + `marginBottom`
 + `marginHorizontal`
-+ `marginLeft`‡
-+ `marginRight`‡
++ `marginLeft`
++ `marginRight`
 + `marginTop`
 + `marginVertical`
 + `maxHeight`
@@ -154,27 +227,40 @@ from `style`.
 + `minWidth`
 + `opacity`
 + `order`
++ `outline` ‡
++ `outlineColor` ‡
 + `overflow`
-+ `overflowX`
-+ `overflowY`
++ `overflowX` ‡
++ `overflowY` ‡
 + `padding` (single value)
 + `paddingBottom`
 + `paddingHorizontal`
-+ `paddingLeft`‡
-+ `paddingRight`‡
++ `paddingLeft`
++ `paddingRight`
 + `paddingTop`
 + `paddingVertical`
++ `perspective` ‡
++ `perspectiveOrigin` ‡
 + `position`
-+ `right`‡
++ `right`
++ `shadowColor`
++ `shadowOffset`
++ `shadowOpacity`
++ `shadowRadius`
 + `top`
 + `transform`
-+ `userSelect`
-+ `visibility`
++ `transformOrigin` ‡
++ `transitionDelay` ‡
++ `transitionDuration` ‡
++ `transitionProperty` ‡
++ `transitionTimingFunction` ‡
++ `userSelect` ‡
++ `visibility` ‡
 + `width`
++ `willChange` ‡
 + `zIndex`
 
-‡ This property can be suffixed with `$noI18n` to prevent automatic
-bidi-flipping in RTL mode. This is only supported if `Platform.OS === 'web'`.
+‡ web only.
 
 Default:
 
@@ -194,9 +280,9 @@ Default:
 };
 ```
 
-(See [facebook/css-layout](https://github.com/facebook/css-layout)).
+(See [facebook/yoga](https://github.com/facebook/yoga)).
 
-**testID**: string
+**testID**: ?string
 
 Used to locate this view in end-to-end tests.
 

docs/guides/accessibility.md

@@ -1,32 +1,124 @@
 # Accessibility
 
-On the Web, assistive technologies derive useful information about the
-structure, purpose, and interactivity of apps from their [HTML
-elements][html-accessibility-url], attributes, and [ARIA in
-HTML][aria-in-html-url].
+On the Web, assistive technologies (e.g., VoiceOver, TalkBack screen readers)
+derive useful information about the structure, purpose, and interactivity of
+apps from their [HTML elements][html-accessibility-url], attributes, and [ARIA
+in HTML][aria-in-html-url]. React Native for Web includes APIs designed to
+provide developers with support for making apps more accessible. The most
+common and best supported accessibility features of the Web are exposed as the
+props: `accessible`, `accessibilityLabel`, `accessibilityLiveRegion`,
+`accessibilityRole`, and `importantForAccessibility`.
 
-The most common and best supported accessibility features of the Web are
-exposed as the props: `accessible`, `accessibilityLabel`,
-`accessibilityLiveRegion`, and `accessibilityRole`.
+## Accessibility properties
 
-React Native for Web does not provide a way to directly control the type of the
-rendered HTML element. The `accessibilityRole` prop is used to infer an
-[analogous HTML element][html-aria-url] to use in addition to the resulting
-ARIA `role`, where possible. While this may contradict some ARIA
+### accessible
+
+When `true`, indicates that the view is an accessibility element. When a view
+is an accessibility element, it groups its children into a single focusable
+component. By default, all touchable elements, buttons, and links are
+"accessible". Prefer using `accessibilityRole` (e.g., `button`, `link`) to
+create focusable HTML elements wherever possible. On web, `accessible={true}`
+is implemented using `tabIndex`.
+
+### accessibilityLabel
+
+When a view is marked as `accessible`, it is a good practice to set an
+`accessibilityLabel` on the view, so that people who use screen readers know
+what element they have selected. On web, `accessibilityLabel` is implemented
+using `aria-label`.
+
+```
+<TouchableOpacity accessibilityLabel={'Tap me!'} accessible={true} onPress={this._onPress}>
+  <View style={styles.button}>
+    <Text style={styles.buttonText}>Press me!</Text>
+  </View>
+</TouchableOpacity>
+```
+
+### accessibilityRole
+
+In some cases, we also want to alert the end user of the type of selected
+component (i.e., that it is a “button”). To provide more context to screen
+readers, you should specify the `accessibilityRole` property. (Note that React
+Native for Web also provides a compatibility mapping of equivalent
+`accessibilityTraits` and `accessibilityComponentType` values to
+`accessibilityRole`).
+
+The `accessibilityRole` prop is used to infer an [analogous HTML
+element][html-aria-url] and ARIA `role`, where possible. In most cases, both
+the element and ARIA `role` are rendered. While this may contradict some ARIA
 recommendations, it also helps avoid certain HTML5 conformance errors and
 accessibility anti-patterns (e.g., giving a `heading` role to a `button`
-element).
+element) and browser bugs.
 
 For example:
 
 * `<View accessibilityRole='article' />` => `<article role='article' />`.
 * `<View accessibilityRole='banner' />` => `<header role='banner' />`.
-* `<View accessibilityRole='button' />` => `<button type='button' role='button' />`.
+* `<View accessibilityRole='button' />` => `<div role='button' tabIndex='0' />`.
+* `<Text accessibilityRole='label' />` => `<label />`.
 * `<Text accessibilityRole='link' href='/' />` => `<a role='link' href='/' />`.
 * `<View accessibilityRole='main' />` => `<main role='main' />`.
 
-Other ARIA properties should be set via [direct
-manipulation](./direct-manipulation.md).
+In the example below, the `TouchableHighlight` is announced by screen
+readers as a button.
+
+```js
+<TouchableHighlight accessibilityRole="button" onPress={this._handlePress}>
+  <View style={styles.button}>
+    <Text style={styles.buttonText}>Press me!</Text>
+  </View>
+</TouchableHighlight>
+```
+
+Note: The `button` role is not implemented using the native `button` element
+due to browsers limiting the use of flexbox layout on its children.
+
+Note: Avoid changing `accessibilityRole` values over time or after user
+actions. Generally, accessibility APIs do not provide a means of notifying
+assistive technologies of a `role` value change.
+
+### accessibilityLiveRegion
+
+When components dynamically change we may need to inform the user.  The
+`accessibilityLiveRegion` property serves this purpose and can be set to
+`none`, `polite` and `assertive`. On web, `accessibilityLiveRegion` is
+implemented using `aria-live`.
+
+* `none`: Accessibility services should not announce changes to this view.
+* `polite`: Accessibility services should announce changes to this view.
+* `assertive`: Accessibility services should interrupt ongoing speech to immediately announce changes to this view.
+
+```
+<TouchableWithoutFeedback onPress={this._addOne}>
+  <View style={styles.embedded}>
+    <Text>Click me</Text>
+  </View>
+</TouchableWithoutFeedback>
+
+<Text accessibilityLiveRegion="polite">
+  Clicked {this.state.count} times
+</Text>
+```
+
+In the above example, method `_addOne` changes the `state.count` variable. As
+soon as an end user clicks the `TouchableWithoutFeedback`, screen readers
+announce text in the `Text` view because of its
+`accessibilityLiveRegion="polite"` property.
+
+### importantForAccessibility
+
+The `importantForAccessibility` property controls if a view appears in the
+accessibility tree and if it is reported to accessibility services. On web, a
+value of `no` will remove a focusable element from the tab flow, and a value of
+`no-hide-descendants` will also hide the entire subtree from assistive
+technologies (this is implemented using `aria-hidden`).
+
+### Other
+
+Other ARIA properties can be set via [direct
+manipulation](./direct-manipulation.md) or props (this may change in the
+future).
 
 [aria-in-html-url]: https://w3c.github.io/aria-in-html/
 [html-accessibility-url]: http://www.html5accessibility.com/

docs/guides/advanced.md

@@ -0,0 +1,104 @@
+# Advanced use
+
+## Use with existing React DOM components
+
+React Native for Web exports a web-specific module called `createDOMElement`,
+which can be used to wrap React DOM components. This allows you to use React
+Native's accessibility and style optimizations.
+
+In the example below, `Video` will now accept common React Native props such as
+`accessibilityLabel`, `accessible`, `style`, and even the Responder event
+props.
+
+```js
+import { createDOMElement } from 'react-native';
+
+const Video = (props) => createDOMElement('video', props);
+```
+
+This also works with composite components defined in your existing component
+gallery or dependencies ([live example](https://www.webpackbin.com/bins/-KiTSGFw3fB9Szg7quLI)).
+
+```js
+import RaisedButton from 'material-ui/RaisedButton';
+import { createDOMElement, StyleSheet } from 'react-native';
+
+const CustomButton = (props) => createDOMElement(RaisedButton, {
+  ...props,
+  style: [ styles.button, props.style ]
+});
+
+const styles = StyleSheet.create({
+  button: {
+    padding: 20
+  }
+});
+```
+
+Remember that React Native styles are not the same as React DOM styles, and
+care needs to be taken not to pass React DOM styles into your React Native
+wrapped components.
+
+## Use as a library framework
+
+The React Native (for Web) building blocks can be used to create higher-level
+components and abstractions. In the example below, a `styled` function provides
+an API inspired by styled-components ([live
+example](https://www.webpackbin.com/bins/-KjT9ziwv4O7FDZdvsnX)).
+
+```js
+const { createDOMElement, StyleSheet } = ReactNative;
+
+/**
+ * styled API
+ */
+const styled = (Component, styler) => {
+  const isDOMComponent = typeof Component === 'string';
+
+  class Styled extends React.Component {
+    static contextTypes = {
+      getTheme: React.PropTypes.func
+    };
+
+    render() {
+      const theme = this.context.getTheme && this.context.getTheme();
+      const localProps = { ...this.props, theme };
+      const nextProps = { ...this.props }
+      const style = typeof styler === 'function' ? styler(localProps) : styler;
+      nextProps.style = [ style, this.props.style ];
+
+      return (
+        isDOMComponent
+          ? createDOMElement(Component, nextProps)
+          : <Component {...nextProps} />
+      );
+    }
+  }
+  return Styled;
+}
+
+const styles = StyleSheet.create({
+  container: {
+    alignItems: 'center',
+    backgroundColor: '#2196F3',
+    flex: 1,
+    justifyContent: 'center'
+  }
+});
+
+const StyledView = styled(View, styles.container);
+```
+
+## Use with react-sketchapp
+
+Use with [react-sketchapp](http://airbnb.io/react-sketchapp/) requires that you
+alias `react-native` to `react-sketchapp`. This will allow you to render your
+existing React Native components in Sketch. Sketch-specific components like
+`Artboard` should be imported from `react-sketchapp`.
+
+If you're using `skpm`, you can rely on an [undocumented
+feature](https://github.com/sketch-pm/skpm/blob/master/lib/utils/webpackConfig.js)
+which will merge your `webpack.config.js`, `.babelrc`, or `package.json` Babel
+config into its internal webpack config. The simplest option may be to use the
+[babel-plugin-module-alias](https://www.npmjs.com/package/babel-plugin-module-alias)
+and configure it in your `package.json`.

docs/guides/direct-manipulation.md

@@ -1,27 +1,68 @@
 # Direct manipulation
 
-It is sometimes necessary to make changes directly to a component without using
-state/props to trigger a re-render of the entire subtree – in the browser, this
-is done by directly modifying a DOM node. `setNativeProps` is the React Native
-equivalent to setting properties directly on a DOM node. Use direct
-manipulation when frequent re-rendering creates a performance bottleneck Direct
-manipulation will not be a tool that you reach for frequently.
+React Native for Web provides several methods to directly access the underlying
+DOM node. This can be useful when you need to make changes directly to a
+component without using state/props to trigger a re-render of the entire
+subtree, or when you want to focus a view or measure its on-screen dimensions.
 
-## `setNativeProps` and `shouldComponentUpdate`
+The methods described are available on most of the default components provided
+by React Native for Web. Note, however, that they are *not* available on the
+composite components that you define in your own app.
+
+## Instance methods
+
+**blur**()
+
+Removes focus from an input or view. This is the opposite of `focus()`.
+
+**focus**()
+
+Requests focus for the given input or view. The exact behavior triggered will
+depend the type of view.
+
+**measure**(callback: (x, y, width, height, pageX, pageY) => void)
+
+For a given view, `measure` determines the offset relative to the parent view,
+width, height, and the offset relative to the viewport. Returns the values via
+an async callback.
+
+Note that these measurements are not available until after the rendering has
+been completed.
+
+**measureLayout**(relativeToNativeNode: DOMNode, onSuccess: (x, y, width, height) => void)
+
+Like `measure`, but measures the view relative to another view, specified as
+`relativeToNativeNode`. This means that the returned `x`, `y` are relative to
+the origin `x`, `y` of the ancestor view.
+
+**setNativeProps**(nativeProps: Object)
+
+This function sends props straight to the underlying DOM node. See the [direct
+manipulation](../guides/direct-manipulation.md) guide for cases where
+`setNativeProps` should be used.
+
+## About `setNativeProps`
+
+`setNativeProps` is the React Native equivalent to setting properties directly
+on a DOM node. Use direct manipulation when frequent re-rendering creates a
+performance bottleneck. Direct manipulation will not be a tool that you reach
+for frequently.
+
+### `setNativeProps` and `shouldComponentUpdate`
 
 `setNativeProps` is imperative and stores state in the native layer (DOM,
 UIView, etc.) and not within your React components, which makes your code more
 difficult to reason about. Before you use it, try to solve your problem with
 `setState` and `shouldComponentUpdate`.
 
-## Avoiding conflicts with the render function
+### Avoiding conflicts with the render function
 
 If you update a property that is also managed by the render function, you might
 end up with some unpredictable and confusing bugs because anytime the component
 re-renders and that property changes, whatever value was previously set from
 `setNativeProps` will be completely ignored and overridden.
 
-## Why use `setNativeProps` on Web?
+### Why use `setNativeProps` on Web?
 
 Using `setNativeProps` in web-specific code is required when making changes to
 `className` or `style`, as these properties are controlled by React Native for
@@ -35,7 +76,7 @@ setOpacityTo(value) {
 }
 ```
 
-## Composite components and `setNativeProps`
+### Composite components and `setNativeProps`
 
 Composite components are not backed by a DOM node, so you cannot call
 `setNativeProps` on them. Consider this example:
@@ -63,7 +104,7 @@ prop on it and have that work - you would need to pass the style prop down to a
 child, unless you are wrapping a native component. Similarly, we are going to
 forward `setNativeProps` to a native-backed child component.
 
-## Forward `setNativeProps` to a child
+### Forward `setNativeProps` to a child
 
 All we need to do is provide a `setNativeProps` method on our component that
 calls `setNativeProps` on the appropriate child with the given arguments.
@@ -86,7 +127,7 @@ class MyButton extends React.Component {
 
 You can now use `MyButton` inside of `TouchableOpacity`!
 
-## `setNativeProps` to clear `TextInput` value
+### `setNativeProps` to clear `TextInput` value
 
 Another very common use case of `setNativeProps` is to clear the value of a
 `TextInput`. For example, the following code demonstrates clearing the input

docs/guides/getting-started.md

@@ -0,0 +1,211 @@
+# Getting started
+
+This guide will help you to correctly configure build and test tools to work
+with React Native for Web. (Alternatively, you can quickly setup a local
+project using the starter kits listed in the README.)
+
+It is recommended that your application provide a `Promise` and `Array.from`
+polyfill.
+
+## Web packager
+
+[Webpack](https://webpack.js.org) is a popular build tool for web apps. Below is an
+example of how to configure a build that uses [Babel](https://babeljs.io/) to
+compile your JavaScript for the web.
+
+Create a `web/webpack.config.js` file:
+
+```js
+// web/webpack.config.js
+
+// This is needed for webpack to compile JavaScript.
+// Many OSS React Native packages are not compiled to ES5 before being
+// published. If you depend on uncompiled packages they may cause webpack build
+// errors. To fix this webpack can be configured to compile to the necessary
+// `node_module`.
+const babelLoaderConfiguration = {
+  test: /\.js$/,
+  // Add every directory that needs to be compiled by Babel during the build
+  include: [
+    path.resolve(__dirname, 'src'),
+    path.resolve(__dirname, 'node_modules/react-native-uncompiled')
+  ],
+  use: {
+    loader: 'babel-loader',
+    options: {
+      cacheDirectory: true,
+      // The 'react-native' preset is recommended (or use your own .babelrc)
+      presets: ['react-native']
+    }
+  }
+};
+
+// This is needed for webpack to import static images in JavaScript files
+const imageLoaderConfiguration = {
+  test: /\.(gif|jpe?g|png|svg)$/,
+  use: {
+    loader: 'url-loader',
+    options: {
+      name: '[name].[ext]'
+    }
+  }
+};
+
+module.exports = {
+  // ...the rest of your config
+
+  module: {
+    rules: [
+      babelLoaderConfiguration,
+      imageLoaderConfiguration
+    ]
+  },
+
+  plugins: [
+    // `process.env.NODE_ENV === 'production'` must be `true` for production
+    // builds to eliminate development checks and reduce build size. You may
+    // wish to include additional optimizations.
+    new webpack.DefinePlugin({
+      'process.env.NODE_ENV': JSON.stringify('production')
+    })
+  ],
+
+  resolve: {
+    // Maps the 'react-native' import to 'react-native-web'.
+    alias: {
+      'react-native': 'react-native-web'
+    },
+    // If you're working on a multi-platform React Native app, web-specific
+    // module implementations should be written in files using the extension
+    // `.web.js`.
+    extensions: [ '.web.js', '.js' ]
+  }
+}
+```
+
+To run in development:
+
+```
+./node_modules/.bin/webpack-dev-server -d --config web/webpack.config.js --inline --hot --colors
+```
+
+To build for production:
+
+```
+./node_modules/.bin/webpack -p --config web/webpack.config.js
+```
+
+Please refer to the Webpack documentation for more information on configuration.
+
+## Web entry
+
+Create a `index.web.js` file (or simply `index.js` for web-only apps).
+
+### Client-side rendering
+
+Rendering using `AppRegistry`:
+
+```js
+// index.web.js
+
+import App from './src/App';
+import React from 'react';
+import ReactNative, { AppRegistry } from 'react-native';
+
+// register the app
+AppRegistry.registerComponent('App', () => App);
+
+AppRegistry.runApplication('App', {
+  initialProps: {},
+  rootTag: document.getElementById('react-app')
+});
+```
+
+Rendering within existing web apps is also possible using `ReactNative`:
+
+```js
+import AppHeader from './src/AppHeader';
+import React from 'react';
+import ReactNative from 'react-native';
+
+ReactNative.render(<AppHeader />, document.getElementById('react-app-header'))
+```
+
+And finally, `react-native-web` components will also be rendering within a tree
+produced by calling `ReactDOM.render` (i.e., an existing web app), but
+otherwise it is not recommended.
+
+### Server-side rendering
+
+Server-side rendering is supported using the `AppRegistry`:
+
+```js
+import App from './src/App';
+import ReactDOMServer from 'react-dom/server'
+import ReactNative, { AppRegistry } from 'react-native'
+
+// register the app
+AppRegistry.registerComponent('App', () => App)
+
+// prerender the app
+const { element, stylesheets } = AppRegistry.getApplication('App', { initialProps });
+const initialHTML = ReactDOMServer.renderToString(element);
+const initialStyles = stylesheets.map((sheet) => ReactDOMServer.renderToStaticMarkup(sheet)).join('\n');
+
+// construct HTML document
+const document = `
+<!DOCTYPE html>
+<html>
+<head>
+${initialStyles}
+</head>
+<body>
+${initialHTML}
+`
+```
+
+## Web-specific code
+
+Minor platform differences can use the `Platform` module.
+
+```js
+import { Platform } from 'react-native';
+
+const styles = StyleSheet.create({
+  height: (Platform.OS === 'web') ? 200 : 100,
+});
+```
+
+More significant platform differences should use platform-specific files (see
+the webpack configuration above for resolving `*.web.js` files):
+
+For example, with the following files in your project:
+
+```
+MyComponent.android.js
+MyComponent.ios.js
+MyComponent.web.js
+```
+
+And the following import:
+
+```js
+import MyComponent from './MyComponent';
+```
+
+React Native will automatically import the correct variant for each specific
+target platform.
+
+## Testing with Jest
+
+[Jest](https://facebook.github.io/jest/) also needs to map `react-native` to `react-native-web`.
+
+```
+"jest": {
+  "moduleNameMapper": {
+    "react-native": "<rootDir>/node_modules/react-native-web"
+  }
+}
+```
+
+Please refer to the Jest documentation for more information.

docs/guides/internationalization.md

@@ -4,11 +4,6 @@ To support right-to-left languages, application layout can be automatically
 flipped from LTR to RTL. The `I18nManager` API can be used to help with more
 fine-grained control and testing of RTL layouts.
 
-React Native for Web provides an experimental feature to support "true left"
-and "true right" styles. For example, `left` will be flipped to `right` in RTL
-mode, but `left$noI18n` will not. More information is available in the `Text`
-and `View` documentation.
-
 ## Working with icons and images
 
 Icons and images that must match the LTR or RTL layout of the app need to be manually flipped.

docs/guides/known-issues.md

@@ -1,10 +1,18 @@
 # Known issues
 
-## Missing modules and Views
+## Safari flexbox performance
 
-This is an initial release of React Native for Web, therefore, not all of the
-views present on iOS/Android are released on Web. We are very much interested in
-the community's feedback on the next set of modules and views.
+Safari version prior to 10.1 can suffer from extremely [poor flexbox
+performance](https://bugs.webkit.org/show_bug.cgi?id=150445). The recommended
+way to work around this issue (as used on mobile.twitter.com) is to set
+`display:block` on Views in your element hierarchy that you know don't need
+flexbox layout.
+
+## Missing modules and components
+
+Not all of the views present on iOS/Android are currently available on Web. We
+are very much interested in the community's feedback on the next set of modules
+and views.
 
 Not all the modules or views for iOS/Android can be implemented on Web. In some
 cases it will be necessary to use a Web counterpart or to guard the use of a

docs/guides/react-native.md

@@ -1,73 +0,0 @@
-# React Native
-
-Use a module loader that supports package aliases (e.g., webpack), and alias
-`react-native` to `react-native-web`.
-
-```js
-// webpack.config.js
-
-module.exports = {
-  // ...
-  resolve: {
-    alias: {
-      'react-native': 'react-native-web'
-    }
-  }
-}
-```
-
-## Image assets
-
-In order to require image assets (e.g. `require('assets/myimage.png')`), add
-the `url-loader` to the webpack config:
-
-```js
-// webpack.config.js
-
-module.exports = {
-  // ...
-  module: {
-    loaders: {
-      test: /\.(gif|jpe?g|png|svg)$/,
-      loader: 'url-loader',
-      query: { name: '[name].[hash:16].[ext]' }
-    }
-  }
-```
-
-## Web-specific code
-
-Minor platform differences can use the `Platform` module.
-
-```js
-import { AppRegistry, Platform } from 'react-native'
-
-AppRegistry.registerComponent('MyApp', () => MyApp)
-
-if (Platform.OS === 'web') {
-  AppRegistry.runApplication('MyApp', {
-    rootTag: document.getElementById('react-root')
-  });
-}
-```
-
-More substantial Web-specific implementation code should be written in files
-with the extension `.web.js`, which webpack will automatically resolve.
-
-## Optimizations
-
-Production builds can benefit from dead-code elimination by defining the
-following variables:
-
-```js
-// webpack.config.js
-
-module.exports = {
-  // ...
-  plugins: [
-    new webpack.DefinePlugin({
-      'process.env.NODE_ENV': JSON.stringify('production')
-    })
-  }
-}
-```

docs/guides/rendering.md

@@ -1,87 +0,0 @@
-# Client and Server rendering
-
-It's recommended that you use a module loader that supports package aliases
-(e.g., webpack), and alias `react-native` to `react-native-web`.
-
-```js
-// webpack.config.js
-
-module.exports = {
-  // ...other configuration
-  resolve: {
-    alias: {
-      'react-native': 'react-native-web'
-    }
-  }
-}
-```
-
-The `react-native-web` package also includes a `core` module that exports only
-`ReactNative`, `Image`, `StyleSheet`, `Text`, `TextInput`, and `View`.
-
-```js
-// webpack.config.js
-
-module.exports = {
-  // ...other configuration
-  resolve: {
-    alias: {
-      'react-native': 'react-native-web/core'
-    }
-  }
-}
-```
-
-## Client-side rendering
-
-Rendering without using the `AppRegistry`:
-
-```js
-import React from 'react'
-import ReactNative from 'react-native'
-
-// component that renders the app
-const AppHeaderContainer = (props) => { /* ... */ }
-
-ReactNative.render(<AppHeaderContainer />, document.getElementById('react-app-header'))
-```
-
-Rendering using the `AppRegistry`:
-
-```js
-import React from 'react'
-import ReactNative, { AppRegistry } from 'react-native'
-
-// component that renders the app
-const AppContainer = (props) => { /* ... */ }
-
-// register the app
-AppRegistry.registerComponent('App', () => AppContainer)
-
-AppRegistry.runApplication('App', {
-  initialProps: {},
-  rootTag: document.getElementById('react-app')
-})
-
-// prerender the app
-const { html, styleElement } = AppRegistry.prerenderApplication('App', { initialProps })
-```
-
-## Server-side rendering
-
-Rendering using the `AppRegistry`:
-
-```
-import ReactDOMServer from 'react-dom/server'
-import ReactNative, { AppRegistry } from 'react-native'
-
-// component that renders the app
-const AppContainer = (props) => { /* ... */ }
-
-// register the app
-AppRegistry.registerComponent('App', () => AppContainer)
-
-// prerender the app
-const { element, stylesheet } = AppRegistry.getApplication('App', { initialProps });
-const initialHTML = ReactDOMServer.renderToString(element);
- ```

docs/guides/style.md

@@ -1,80 +1,90 @@
 # Style
 
-React Native for Web relies on JavaScript to define styles for your
-application. This allows you to avoid issues arising from the [7 deadly sins of
-CSS](https://speakerdeck.com/vjeux/react-css-in-js):
+React Native relies on JavaScript to define and resolve the styles of your
+application. React Native for Web implements the React Native style API in a
+way that avoids *all* the [problems with CSS at
+scale](https://speakerdeck.com/vjeux/react-css-in-js):
 
-1. Global namespace
-2. Dependency hell
+1. No local variables
+2. Implicit dependencies
 3. No dead code elimination
 4. No code minification
 5. No sharing of constants
 6. Non-deterministic resolution
-7. Lack of isolation
+7. No isolation
+
+At the same time, it has several benefits:
+
+1. Simple API and expressive subset of CSS
+2. Generates CSS; the minimum required
+3. Good runtime performance
+4. Support for static and dynamic styles
+5. Support for RTL layouts
+6. Easy pre-rendering of critical CSS
 
 ## Defining styles
 
-Styles should be defined outside of the component:
+Styles should be defined outside of the component. Using `StyleSheet.create` is
+optional but provides the best performance (by relying on generated CSS
+stylesheets). Avoid creating unregistered style objects.
 
 ```js
-class Example extends React.Component {}
-
 const styles = StyleSheet.create({
   heading: {
     color: 'gray',
     fontSize: '2rem'
   },
   text: {
-    color: 'gray',
-    fontSize: '1.25rem'
+    marginTop: '1rem',
+    margin: 10
   }
 })
 ```
 
-Using `StyleSheet.create` is optional but provides some key advantages: styles
-are immutable in development, certain declarations are automatically converted
-to CSS rather than applied as inline styles, and styles are only created once
-for the application and not on every render.
-
-The attribute names and values are a subset of CSS. See the `style`
-documentation of individual components.
+See the `style` documentation of individual components for supported properties.
 
 ## Using styles
 
-All the React Native components accept a `style` attribute.
+All the React Native components accept a `style` property. The value can be a
+registered object, a plain object, or an array.
 
 ```js
-<Text style={styles.text} />
+// registered object
 <View style={styles.view} />
+
+// plain object
+<View style={{ transform: [ { translateX } ] }} />
+
+// array of registered or plain objects
+<View style={[ styles.container, this.props.style ]} />
 ```
 
-A common pattern is to conditionally add style based on a condition:
+The array syntax will merge styles from left-to-right as normal JavaScript
+objects, and can be used to conditionally apply styles:
 
 ```js
-// either
 <View style={[
-  styles.base,
+  styles.container,
   this.state.active && styles.active
 ]} />
-
-// or
-<View style={{
-  ...styles.base,
-  ...(this.state.active && styles.active)
-}} />
 ```
 
+When styles are registered with `StyleSheet.create`, the return value is a
+number and not a style object. This is important for performance optimizations,
+but still allows you to merge styles in a deterministic manner at runtime. If
+you need access to the underlying style objects you need to use
+`StyleSheet.flatten` (but be aware that this is not the optimized path).
+
 ## Composing styles
 
-In order to let a call site customize the style of your component children, you
-can pass styles around. Use `View.propTypes.style` and `Text.propTypes.style` in
-order to make sure only valid styles are being passed.
+To let other components customize the style of a component's children you can
+expose a prop so styles can be explicitly passed into the component.
 
 ```js
 class List extends React.Component {
   static propTypes = {
-    style: View.propTypes.style,
-    elementStyle: View.propTypes.style,
+    style: ViewPropTypes.style,
+    elementStyle: ViewPropTypes.style,
   }
 
   render() {
@@ -97,56 +107,126 @@ In another file:
 
 You also have much greater control over how styles are composed when compared
 to using class names. For example, you may choose to accept a limited subset
-of style props in the component's API, and control when they are applied:
+of style props in the component's API, and control when they are applied.
 
-```js
-class List extends React.Component {
-  static propTypes = {
-    children: React.PropTypes.any,
-    // limit which styles are accepted
-    style: React.PropTypes.shape({
-      borderColor: View.propTypes.borderColor,
-      borderWidth: View.propTypes.borderWidth
-    })
-  }
+## How styles are resolved
 
-  render() {
-    return (
-      <View
-        children={children}
-        style={[
-          this.props.style,
-          // override border-color when scrolling
-          isScrolling && { borderColor: 'transparent' }
-        ]}
-      />
-    )
-  }
-}
+React Native style resolution is deterministic and slightly different from CSS.
+
+In the following HTML/CSS example, the `.margin` selector is defined last in
+the CSS and takes precedence over the previous rules, resulting in a margin of
+`0, 0, 0, 0`.
+
+```html
+<style>
+.marginTop { margin-top: 10px; }
+.marginBottom { margin-bottom: 20px; }
+.margin { margin: 0; }
+</style>
+<div class="marginTop marginBottom margin"></div>
 ```
 
-## Media Queries
+But in React Native the most *specific* style property takes precedence,
+resulting in margins of `10, 0, 20, 0`.
+
+```js
+const style = [
+  { marginTop: 10 },
+  { marginBottom: 20 },
+  { margin: 0 }
+];
+
+const Box = () => <View style={style} />
+```
+
+## Implementation details
+
+React Native for Web transforms React Native styles into React DOM styles. Any
+styles defined using `StyleSheet.create` will ultimately be rendered using CSS
+class names.
+
+React Native for Web introduced a novel strategy to achieve this. Each rule is
+broken down into declarations, properties are expanded to their long-form, and
+the resulting key-value pairs are mapped to unique "atomic CSS" class names.
+
+Input:
+
+```js
+const Box = () => <View style={styles.box} />
+
+const styles = StyleSheet.create({
+  box: {
+    margin: 0
+  }
+});
+```
+
+Output:
+
+```html
+<style>
+.rn-1mnahxq { margin-top: 0px; }
+.rn-61z16t { margin-right: 0px; }
+.rn-p1pxzi { margin-bottom: 0px; }
+.rn-11wrixw { margin-left: 0px; }
+</style>
+
+<div class="rn-156q2ks rn-61z16t rn-p1pxzi rn-11wrixw"></div>
+```
+
+This ensures that CSS order doesn't impact rendering and CSS rules are
+efficiently deduplicated. Rather than the total CSS growing in proportion to
+the number of *rules*, it grows in proportion to the number of *unique
+declarations*. As a result, the DOM style sheet is only written to when new
+unique declarations are defined and it is usually small enough to be
+pre-rendered and inlined.
+
+Class names are deterministic, which means that the resulting CSS and HTML is
+consistent across builds – important for large apps using code-splitting and
+deploying incremental updates.
+
+At runtime registered styles are resolved to DOM style props and memoized.
+Any dynamic styles that contain declarations previously registered as static
+styles can also be converted to CSS class names. Otherwise, they render as
+inline styles.
+
+All this allows React Native for Web to support the rich functionality of React
+Native styles (including RTL layouts and `setNativeProps`) while providing one
+of the [fastest](https://github.com/necolas/react-native-web/blob/master/benchmarks/README.md),
+safest, and most efficient styles-in-JavaScript solutions.
+
+## FAQs
+
+### What about Media Queries?
 
 `StyleSheet.create` is a way of defining the styles your application requires;
 it does not concern itself with _where_ or _when_ those styles are applied to
 elements.
 
-There are various React libraries wrapping JavaScript Media Query API's, e.g.,
+Media Queries may not be most appropriate for component-based designs. React
+Native provides the `Dimensions` API and `onLayout` props.  If you do need Media
+Queries, using the `matchMedia` DOM API has the benefit of allowing you to swap
+out entire components, not just styles. There are also many React libraries
+wrapping JavaScript Media Query API's, e.g.,
+[react-media](https://github.com/reacttraining/react-media),
 [react-media-queries](https://github.com/bloodyowl/react-media-queries),
 [media-query-fascade](https://github.com/tanem/media-query-facade), or
-[react-responsive](https://github.com/contra/react-responsive). This has the
-benefit of co-locating breakpoint-specific DOM and style changes.
+[react-responsive](https://github.com/contra/react-responsive).
 
-## Pseudo-classes and pseudo-elements
+### What about pseudo-classes and pseudo-elements?
 
 Pseudo-classes like `:hover` and `:focus` can be implemented with events (e.g.
 `onFocus`). Pseudo-elements are not supported; elements should be used instead.
 
-### Reset
+### Do I need a CSS reset?
 
-You **do not** need to include a CSS reset or
-[normalize.css](https://necolas.github.io/normalize.css/).
+No. React Native for Web includes a very small CSS reset that removes unwanted
+User Agent styles from (pseudo-)elements beyond the reach of React (e.g.,
+`html`, `body`) or inline styles (e.g., `::-moz-focus-inner`). The rest is
+handled at the component-level.
 
-React Native for Web includes a very small CSS reset taken from normalize.css.
-It removes unwanted User Agent styles from (pseudo-)elements beyond the reach
-of React (e.g., `html`, `body`) or inline styles (e.g., `::-moz-focus-inner`).
+### What about using Dev Tools?
+
+React Dev Tools supports inspecting and editing of React Native styles. It's
+recommended that you rely more on React Dev Tools and live/hot-reloading rather
+than inspecting and editing the DOM directly.

docs/package.json

@@ -0,0 +1,11 @@
+{
+  "scripts": {
+    "build": "yarn && build-storybook -o ./dist -c ./storybook/.storybook",
+    "start": "start-storybook -p 9001 -c ./storybook/.storybook",
+    "release": "yarn build && git checkout gh-pages && rm -rf ../storybook && mv dist ../storybook && git add -A && git commit -m \"Storybook deploy\" && git push origin gh-pages && git checkout -"
+  },
+  "dependencies": {
+    "@storybook/addon-options": "^3.1.6",
+    "@storybook/react": "^3.1.9"
+  }
+}

docs/storybook/.storybook/addons.js

@@ -0,0 +1 @@
+import '@storybook/addon-options/register';