Updates from Wed 20 May

.eslintignore

@@ -1,3 +1,5 @@
-**/node_modules/**/.*js
+# node_modules ignored by default
+
 **/staticBundle.js
 **/main.js
+Libraries/vendor/**/*

.eslintrc

@@ -168,7 +168,7 @@
     "no-underscore-dangle": 0,       // disallow dangling underscores in identifiers
     "no-wrap-func": 1,               // disallow wrapping of non-IIFE statements in parens
     "no-mixed-spaces-and-tabs": 1,   // disallow mixed spaces and tabs for indentation
-    "quotes": [1, "single"],         // specify whether double or single quotes should be used
+    "quotes": [1, "single", "avoid-escape"], // specify whether double or single quotes should be used
     "quote-props": 0,                // require quotes around object literal property names (off by default)
     "semi": 1,                       // require or disallow use of semicolons instead of ASI
     "sort-vars": 0,                  // sort variables within the same declaration block (off by default)

IntegrationTests/AppEventsTest.js

@@ -0,0 +1,62 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule AppEventsTest
+ * @flow
+ */
+'use strict';
+
+var React = require('react-native');
+var {
+  NativeAppEventEmitter,
+  NativeModules,
+  StyleSheet,
+  Text,
+  View,
+} = React;
+var TestModule = NativeModules.TestModule || NativeModules.SnapshotTestManager;
+
+var deepDiffer = require('deepDiffer');
+
+var TEST_PAYLOAD = {foo: 'bar'};
+
+var AppEventsTest = React.createClass({
+  getInitialState: function() {
+    return {sent: 'none', received: 'none'};
+  },
+  componentDidMount: function() {
+    NativeAppEventEmitter.addListener('testEvent', this.receiveEvent);
+    var event = {data: TEST_PAYLOAD, ts: Date.now()};
+    TestModule.sendAppEvent('testEvent', event);
+    this.setState({sent: event});
+  },
+  receiveEvent: function(event: any) {
+    if (deepDiffer(event.data, TEST_PAYLOAD)) {
+      throw new Error('Received wrong event: ' + JSON.stringify(event));
+    }
+    var elapsed = (Date.now() - event.ts) + 'ms';
+    this.setState({received: event, elapsed}, TestModule.markTestCompleted);
+  },
+  render: function() {
+    return (
+      <View style={styles.container}>
+        <Text>
+          {JSON.stringify(this.state, null, '  ')}
+        </Text>
+      </View>
+    );
+  }
+});
+
+var styles = StyleSheet.create({
+  container: {
+    margin: 40,
+  },
+});
+
+module.exports = AppEventsTest;

IntegrationTests/IntegrationTestsApp.js

@@ -26,6 +26,7 @@ var TESTS = [
   require('./TimersTest'),
   require('./AsyncStorageTest'),
   require('./LayoutEventsTest'),
+  require('./AppEventsTest'),
   require('./SimpleSnapshotTest'),
 ];
 

IntegrationTests/IntegrationTestsTests/IntegrationTestsTests.m

@@ -76,6 +76,11 @@
   [_runner runTest:_cmd module:@"LayoutEventsTest"];
 }
 
+- (void)testAppEvents
+{
+  [_runner runTest:_cmd module:@"AppEventsTest"];
+}
+
 #pragma mark Snapshot Tests
 
 - (void)testSimpleSnapshot

Libraries/ART/ARTSerializablePath.js

@@ -8,8 +8,7 @@
  *
  * @providesModule ARTSerializablePath
  */
-
-"use strict";
+'use strict';
 
 // TODO: Move this into an ART mode called "serialized" or something
 

Libraries/ART/ReactNativeART.js

@@ -8,8 +8,7 @@
  *
  * @providesModule ReactNativeART
  */
-
-"use strict";
+'use strict';
 
 var Color = require('art/core/color');
 var Path = require('ARTSerializablePath');

Libraries/Components/ActivityIndicatorIOS/ActivityIndicatorIOS.ios.js

@@ -12,7 +12,6 @@
 'use strict';
 
 var NativeMethodsMixin = require('NativeMethodsMixin');
-var NativeModules = require('NativeModules');
 var PropTypes = require('ReactPropTypes');
 var React = require('React');
 var StyleSheet = require('StyleSheet');

Libraries/Components/ScrollResponder.js

@@ -183,7 +183,7 @@ var ScrollResponderMixin = {
     var currentlyFocusedTextInput = TextInputState.currentlyFocusedField();
     if (!this.props.keyboardShouldPersistTaps &&
       currentlyFocusedTextInput != null &&
-      e.target != currentlyFocusedTextInput) {
+      e.target !== currentlyFocusedTextInput) {
       return true;
     }
     return this.scrollResponderIsAnimating();
@@ -244,7 +244,7 @@ var ScrollResponderMixin = {
     var currentlyFocusedTextInput = TextInputState.currentlyFocusedField();
     if (!this.props.keyboardShouldPersistTaps &&
       currentlyFocusedTextInput != null &&
-      e.target != currentlyFocusedTextInput  &&
+      e.target !== currentlyFocusedTextInput  &&
       !this.state.observedScrollSinceBecomingResponder &&
       !this.state.becameResponderWhileAnimating) {
       this.props.onScrollResponderKeyboardDismissed &&

Libraries/Components/Subscribable.js

@@ -11,7 +11,7 @@
  */
 'use strict';
 
-var EventEmitter = require('EventEmitter');
+import type EventEmitter from 'EventEmitter';
 
 /**
  * Subscribable provides a mixin for safely subscribing a component to an

Libraries/Components/TextInput/TextInput.js

@@ -179,12 +179,12 @@ var TextInput = React.createClass({
       'number-pad',
       'phone-pad',
       'name-phone-pad',
-      'email-address',
       'decimal-pad',
       'twitter',
       'web-search',
       // Cross-platform
       'numeric',
+      'email-address',
     ]),
     /**
      * Determines how the return key should look.

Libraries/Components/View/View.js

@@ -24,6 +24,26 @@ var createReactNativeComponentClass = require('createReactNativeComponentClass')
 
 var stylePropType = StyleSheetPropType(ViewStylePropTypes);
 
+var AccessibilityTraits = [
+  'none',
+  'button',
+  'link',
+  'header',
+  'search',
+  'image',
+  'selected',
+  'plays',
+  'key',
+  'text',
+  'summary',
+  'disabled',
+  'frequentUpdates',
+  'startsMedia',
+  'adjustable',
+  'allowsDirectInteraction',
+  'pageTurn',
+];
+
 /**
  * The most fundamental component for building UI, `View` is a
  * container that supports layout with flexbox, style, some touch handling, and
@@ -70,6 +90,27 @@ var View = React.createClass({
      */
     accessibilityLabel: PropTypes.string,
 
+    /**
+     * Provides additional traits to screen reader. By default no traits are
+     * provided unless specified otherwise in element
+     */
+    accessibilityTraits: PropTypes.oneOfType([
+      PropTypes.oneOf(AccessibilityTraits),
+      PropTypes.arrayOf(PropTypes.oneOf(AccessibilityTraits)),
+    ]),
+
+    /**
+     * When `accessible` is true, the system will try to invoke this function
+     * when the user performs accessibility tap gesture.
+     */
+    onAcccessibilityTap: PropTypes.func,
+
+    /**
+     * When `accessible` is true, the system will invoke this function when the
+     * user performs the magic tap gesture.
+     */
+    onMagicTap: PropTypes.func,
+
     /**
      * Used to locate this view in end-to-end tests.
      */

Libraries/Components/WebView/WebView.android.js

@@ -75,7 +75,7 @@ var WebView = React.createClass({
         errorEvent.code,
         errorEvent.description);
     } else if (this.state.viewState !== WebViewState.IDLE) {
-      console.error("RCTWebView invalid state encountered: " + this.state.loading);
+      console.error('RCTWebView invalid state encountered: ' + this.state.loading);
     }
 
     var webViewStyles = [styles.container, this.props.style];
@@ -152,7 +152,7 @@ var WebView = React.createClass({
 
   onLoadingError: function(event) {
     event.persist(); // persist this event because we need to store it
-    console.error("encountered an error loading page", event.nativeEvent);
+    console.error('Encountered an error loading page', event.nativeEvent);
 
     this.setState({
       lastErrorEvent: event.nativeEvent,

Libraries/Components/WebView/WebView.ios.js

@@ -14,7 +14,6 @@
 var ActivityIndicatorIOS = require('ActivityIndicatorIOS');
 var EdgeInsetsPropType = require('EdgeInsetsPropType');
 var React = require('React');
-var ReactNativeViewAttributes = require('ReactNativeViewAttributes');
 var StyleSheet = require('StyleSheet');
 var Text = require('Text');
 var View = require('View');
@@ -198,7 +197,7 @@ var WebView = React.createClass({
 
   onLoadingError: function(event: Event) {
     event.persist(); // persist this event because we need to store it
-    console.error("encountered an error loading page", event.nativeEvent);
+    console.error('Encountered an error loading page', event.nativeEvent);
 
     this.setState({
       lastErrorEvent: event.nativeEvent,

Libraries/CustomComponents/Navigator/Navigator.js

@@ -24,6 +24,7 @@
  *
  * @providesModule Navigator
  */
+ /* eslint-disable no-extra-boolean-cast*/
 'use strict';
 
 var AnimationsDebugModule = require('NativeModules').AnimationsDebugModule;
@@ -48,8 +49,6 @@ var clamp = require('clamp');
 var flattenStyle = require('flattenStyle');
 var getNavigatorContext = require('getNavigatorContext');
 var invariant = require('invariant');
-var keyMirror = require('keyMirror');
-var merge = require('merge');
 var rebound = require('rebound');
 
 var PropTypes = React.PropTypes;
@@ -689,7 +688,7 @@ var Navigator = React.createClass({
    */
   _enableScene: function(sceneIndex) {
     // First, determine what the defined styles are for scenes in this navigator
-    var sceneStyle = flattenStyle(this.props.sceneStyle);
+    var sceneStyle = flattenStyle([styles.baseScene, this.props.sceneStyle]);
     // Then restore the left value for this scene
     var enabledSceneNativeProps = {
       left: sceneStyle.left,
@@ -745,7 +744,6 @@ var Navigator = React.createClass({
   },
 
   _handleMoveShouldSetPanResponder: function(e, gestureState) {
-    var currentRoute = this.state.routeStack[this.state.presentedIndex];
     var sceneConfig = this.state.sceneConfigStack[this.state.presentedIndex];
     this._expectingGestureGrant = this._matchGestureAction(this._eligibleGestures, sceneConfig.gestures, gestureState);
     return !! this._expectingGestureGrant;
@@ -829,7 +827,16 @@ var Navigator = React.createClass({
       }
     } else {
       // The gesture has enough velocity to complete, so we transition to the gesture's destination
-      this._transitionTo(destIndex, transitionVelocity);
+      this._transitionTo(
+        destIndex,
+        transitionVelocity,
+        null,
+        () => {
+          if (releaseGestureAction === 'pop') {
+            this._cleanScenesPastIndex(destIndex);
+          }
+        }
+      );
     }
     this._detachGesture();
   },

Libraries/CustomComponents/Navigator/NavigatorSceneConfigs.js

@@ -213,7 +213,7 @@ var FromTheLeft = {
   translateX: {
     from: -SCREEN_WIDTH,
     to: 0,
-    min: 0, 
+    min: 0,
     max: 1,
     type: 'linear',
     extrapolate: true,

Libraries/Fetch/fetch.js

@@ -12,6 +12,7 @@
  * @providesModule fetch
  * @nolint
  */
+/* eslint-disable */
 'use strict';
 
 var self = {};

Libraries/Geolocation/Geolocation.js

@@ -120,6 +120,6 @@ var Geolocation = {
       subscriptions = [];
     }
   }
-}
+};
 
 module.exports = Geolocation;

Libraries/Image/Image.ios.js

@@ -60,7 +60,7 @@ var Image = React.createClass({
     /**
      * `uri` is a string representing the resource identifier for the image, which
      * could be an http address, a local file path, or the name of a static image
-     * resource (which should be wrapped in the `required('image!name')` function).
+     * resource (which should be wrapped in the `require('image!name')` function).
      */
     source: PropTypes.shape({
       uri: PropTypes.string,

Libraries/JavaScriptAppEngine/Initialization/SourceMap.js

@@ -18,6 +18,7 @@
  * and wrapping resulting file into `wrapper` function.
  *
  */
+/*eslint-disable */
 
 var scope = {};
 wrapper.call(scope);

Libraries/JavaScriptAppEngine/Initialization/source-map-url.js

@@ -11,6 +11,7 @@
  *
  * @nolint
  */
+/* eslint-disable */
 
 (function() {
   var define = null; // Hack to make it work with our packager

Libraries/PushNotificationIOS/PushNotificationIOS.js

@@ -11,7 +11,6 @@
  */
 'use strict';
 
-var NativeModules = require('NativeModules');
 var RCTDeviceEventEmitter = require('RCTDeviceEventEmitter');
 var RCTPushNotificationManager = require('NativeModules').PushNotificationManager;
 var invariant = require('invariant');

Libraries/RCTTest/RCTTestModule.m

@@ -11,6 +11,7 @@
 
 #import "FBSnapshotTestController.h"
 #import "RCTAssert.h"
+#import "RCTEventDispatcher.h"
 #import "RCTLog.h"
 #import "RCTUIManager.h"
 
@@ -63,4 +64,9 @@ RCT_EXPORT_METHOD(markTestCompleted)
   }];
 }
 
+RCT_EXPORT_METHOD(sendAppEvent:(NSString *)name body:(id)body)
+{
+  [_bridge.eventDispatcher sendAppEventWithName:name body:body];
+}
+
 @end

Libraries/RKBackendNode/queryLayoutByID.js

@@ -58,4 +58,3 @@ var queryLayoutByID = function(
 };
 
 module.exports = queryLayoutByID;
-

Libraries/ReactIOS/IOSNativeBridgeEventPlugin.js

@@ -9,8 +9,7 @@
  * @providesModule IOSNativeBridgeEventPlugin
  * @flow
  */
-
-"use strict";
+'use strict';
 
 var EventPropagators = require('EventPropagators');
 var NativeModules = require('NativeModules');
@@ -33,7 +32,7 @@ for (var bubblingTypeName in customBubblingEventTypes) {
 for (var directTypeName in customDirectEventTypes) {
   warning(
     !customBubblingEventTypes[directTypeName],
-    "Event cannot be both direct and bubbling: %s",
+    'Event cannot be both direct and bubbling: %s',
     directTypeName
   );
   allTypesByEventName[directTypeName] = customDirectEventTypes[directTypeName];
@@ -76,4 +75,3 @@ var IOSNativeBridgeEventPlugin = {
 };
 
 module.exports = IOSNativeBridgeEventPlugin;
-

Libraries/ReactIOS/verifyPropTypes.js

@@ -22,6 +22,13 @@ function verifyPropTypes(
   if (!viewConfig) {
     return; // This happens for UnimplementedView.
   }
+  var componentName = component.name || component.displayName;
+  if (!component.propTypes) {
+    throw new Error(
+      '`' + componentName + '` has no propTypes defined`'
+    );
+  }
+
   var nativeProps = viewConfig.nativeProps;
   for (var prop in nativeProps) {
     if (!component.propTypes[prop] &&
@@ -29,9 +36,9 @@ function verifyPropTypes(
         !ReactNativeStyleAttributes[prop] &&
         (!nativePropsToIgnore || !nativePropsToIgnore[prop])) {
       throw new Error(
-        '`' + component.displayName + '` has no propType for native prop `' +
+        '`' + componentName + '` has no propType for native prop `' +
         viewConfig.uiViewClassName + '.' + prop + '` of native type `' +
-        nativeProps[prop].type + '`'
+        nativeProps[prop] + '`'
       );
     }
   }

Libraries/ReactNative/React.js

@@ -9,7 +9,6 @@
  * @providesModule React
  * @flow
  */
-
-"use strict";
+'use strict';
 
 module.exports = require('ReactNative');

Libraries/ReactNative/ReactNative.js

@@ -9,7 +9,7 @@
  * @providesModule ReactNative
  * @flow
  */
-"use strict";
+'use strict';
 
 var ReactChildren = require('ReactChildren');
 var ReactClass = require('ReactClass');

Libraries/ReactNative/ReactNativeBaseComponent.js

@@ -63,7 +63,8 @@ var cachedIndexArray = function(size) {
     for (var i = 0; i < size; i++) {
       arr[i] = i;
     }
-    return cachedIndexArray._cache[size] = arr;
+    cachedIndexArray._cache[size] = arr;
+    return arr;
   } else {
     return cachedResult;
   }
@@ -228,7 +229,7 @@ ReactNativeBaseComponent.Mixin = {
    */
   _reconcileListenersUponUpdate: function(prevProps, nextProps) {
     for (var key in nextProps) {
-      if (registrationNames[key] && (nextProps[key] != prevProps[key])) {
+      if (registrationNames[key] && (nextProps[key] !== prevProps[key])) {
         putListener(this._rootNodeID, key, nextProps[key]);
       }
     }

Libraries/ReactNative/ReactNativeDOMIDOperations.js

@@ -9,8 +9,7 @@
  * @providesModule ReactNativeDOMIDOperations
  * @flow
  */
-
-"use strict";
+'use strict';
 
 var ReactNativeTagHandles = require('ReactNativeTagHandles');
 var ReactMultiChildUpdateTypes = require('ReactMultiChildUpdateTypes');

Libraries/ReactNative/ReactNativeDefaultInjection.js

@@ -9,8 +9,7 @@
  * @providesModule ReactNativeDefaultInjection
  * @flow
  */
-
-"use strict";
+'use strict';
 
 /**
  * Make sure `setTimeout`/`setInterval` are patched correctly.
@@ -21,7 +20,6 @@ var EventPluginUtils = require('EventPluginUtils');
 var IOSDefaultEventPluginOrder = require('IOSDefaultEventPluginOrder');
 var IOSNativeBridgeEventPlugin = require('IOSNativeBridgeEventPlugin');
 var NodeHandle = require('NodeHandle');
-var ReactClass = require('ReactClass');
 var ReactComponentEnvironment = require('ReactComponentEnvironment');
 var ReactDefaultBatchingStrategy = require('ReactDefaultBatchingStrategy');
 var ReactEmptyComponent = require('ReactEmptyComponent');

Libraries/ReactNative/ReactNativeEventEmitter.js

@@ -9,8 +9,7 @@
  * @providesModule ReactNativeEventEmitter
  * @flow
  */
-
-"use strict";
+'use strict';
 
 var EventPluginHub = require('EventPluginHub');
 var ReactEventEmitterMixin = require('ReactEventEmitterMixin');

Libraries/ReactNative/ReactNativeMount.js

@@ -21,7 +21,6 @@ var ReactUpdates = require('ReactUpdates');
 
 var emptyObject = require('emptyObject');
 var instantiateReactComponent = require('instantiateReactComponent');
-var invariant = require('invariant');
 var shouldUpdateReactComponent = require('shouldUpdateReactComponent');
 
 function instanceNumberToChildRootID(rootNodeID, instanceNumber) {

Libraries/ReactNative/ReactNativeReconcileTransaction.js

@@ -9,8 +9,7 @@
  * @providesModule ReactNativeReconcileTransaction
  * @flow
  */
-
-"use strict";
+'use strict';
 
 var CallbackQueue = require('CallbackQueue');
 var PooledClass = require('PooledClass');

Libraries/ReactNative/ReactNativeViewAttributes.js

@@ -19,8 +19,11 @@ ReactNativeViewAttributes.UIView = {
   pointerEvents: true,
   accessible: true,
   accessibilityLabel: true,
+  accessibilityTraits: true,
   testID: true,
   onLayout: true,
+  onAccessibilityTap: true,
+  onMagicTap: true,
 };
 
 ReactNativeViewAttributes.RCTView = merge(

Libraries/ReactNative/createReactNativeComponentClass.js

@@ -10,9 +10,8 @@
  * @flow
  */
 
-"use strict";
+'use strict';
 
-var ReactElement = require('ReactElement');
 var ReactNativeBaseComponent = require('ReactNativeBaseComponent');
 
 // See also ReactNativeBaseComponent

Libraries/Settings/Settings.ios.js

@@ -31,7 +31,7 @@ var Settings = {
   },
 
   watchKeys(keys: string | Array<string>, callback: Function): number {
-    if (typeof keys == 'string') {
+    if (typeof keys === 'string') {
       keys = [keys];
     }
 
@@ -41,7 +41,7 @@ var Settings = {
     );
 
     var sid = subscriptions.length;
-    subscriptions.push({keys: keys, callback: callback})
+    subscriptions.push({keys: keys, callback: callback});
     return sid;
   },
 
@@ -52,15 +52,14 @@ var Settings = {
   },
 
   _sendObservations(body: Object) {
-    var _this = this;
     Object.keys(body).forEach((key) => {
       var newValue = body[key];
-      var didChange = _this._settings[key] !== newValue;
-      _this._settings[key] = newValue;
+      var didChange = this._settings[key] !== newValue;
+      this._settings[key] = newValue;
 
       if (didChange) {
         subscriptions.forEach((sub) => {
-          if (~sub.keys.indexOf(key) && sub.callback) {
+          if (sub.keys.indexOf(key) !== -1 && sub.callback) {
             sub.callback();
           }
         });

Libraries/StyleSheet/EdgeInsetsPropType.js

@@ -9,12 +9,11 @@
  * @providesModule EdgeInsetsPropType
  * @flow
  */
-'use strict'
+'use strict';
 
 var PropTypes = require('ReactPropTypes');
 
 var createStrictShapeTypeChecker = require('createStrictShapeTypeChecker');
-var insetsDiffer = require('insetsDiffer');
 
 var EdgeInsetsPropType = createStrictShapeTypeChecker({
   top: PropTypes.number,

Libraries/StyleSheet/PointPropType.js

@@ -9,12 +9,11 @@
  * @providesModule PointPropType
  * @flow
  */
-'use strict'
+'use strict';
 
 var PropTypes = require('ReactPropTypes');
 
 var createStrictShapeTypeChecker = require('createStrictShapeTypeChecker');
-var pointsDiffer = require('pointsDiffer');
 
 var PointPropType = createStrictShapeTypeChecker({
   x: PropTypes.number,

Libraries/Utilities/ErrorUtils.js

@@ -8,6 +8,7 @@
  *
  * @providesModule ErrorUtils
  */
+/* eslint-disable consistent-this, global-strict */
 
 var GLOBAL = this;
 

Libraries/Utilities/MatrixMath.js

@@ -3,6 +3,7 @@
  *
  * @providesModule MatrixMath
  */
+/* eslint-disable space-infix-ops */
 'use strict';
 
 var invariant = require('invariant');

Libraries/Utilities/RCTLog.js

@@ -9,7 +9,6 @@
  * @providesModule RCTLog
  * @flow
  */
- /* globals nativeLoggingHook */
 'use strict';
 
 var invariant = require('invariant');

Libraries/Utilities/RCTRenderingPerf.js

@@ -12,7 +12,6 @@
 'use strict';
 
 var ReactDefaultPerf = require('ReactDefaultPerf');
-var ReactPerf = require('ReactPerf');
 
 var invariant = require('invariant');
 

Libraries/Utilities/__mocks__/ErrorUtils.js

@@ -6,7 +6,7 @@
 
 function execute(fun, context, args) {
   return fun.apply(context, args);
-};
+}
 
 function reportError(error) {
   throw error;

Libraries/Utilities/buildStyleInterpolator.js

@@ -7,6 +7,7 @@
 /**
  * Cannot "use strict" because we must use eval in this file.
  */
+/* eslint-disable global-strict */
 
 var keyOf = require('keyOf');
 
@@ -372,7 +373,7 @@ var MatrixOpsInitial = {
 var setNextValAndDetectChange = function(name, tmpVarName) {
   return (
     '  if (!didChange) {\n' +
-    '    var prevVal = result.' + name +';\n' +
+    '    var prevVal = result.' + name + ';\n' +
     '    result.' + name + ' = ' + tmpVarName + ';\n' +
     '    didChange = didChange  || (' + tmpVarName + ' !== prevVal);\n' +
     '  } else {\n' +

Libraries/Utilities/truncate.js

@@ -45,4 +45,3 @@ var truncate = function(
 };
 
 module.exports = truncate;
-

React/Base/RCTConvert.h

@@ -141,6 +141,7 @@ RCT_EXTERN BOOL RCTCopyProperty(id target, id source, NSString *keyPath);
  * Underlying implementations of RCT_XXX_CONVERTER macros. Ignore these.
  */
 RCT_EXTERN NSNumber *RCTConvertEnumValue(const char *, NSDictionary *, NSNumber *, id);
+RCT_EXTERN NSNumber *RCTConvertMultiEnumValue(const char *, NSDictionary *, NSNumber *, id);
 RCT_EXTERN NSArray *RCTConvertArrayValue(SEL, id);
 RCT_EXTERN void RCTLogConvertError(id, const char *);
 
@@ -194,6 +195,21 @@ RCT_CUSTOM_CONVERTER(type, type, [[self NSNumber:json] getter])
   return [RCTConvertEnumValue(#type, mapping, @(default), json) getter]; \
 }
 
+/**
+ * This macro is used for creating converters for enum types for
+ * multiple enum values combined with | operator
+ */
+#define RCT_MULTI_ENUM_CONVERTER(type, values, default, getter) \
++ (type)type:(id)json                                     \
+{                                                         \
+  static NSDictionary *mapping;                           \
+  static dispatch_once_t onceToken;                       \
+  dispatch_once(&onceToken, ^{                            \
+    mapping = values;                                     \
+  });                                                     \
+  return [RCTConvertMultiEnumValue(#type, mapping, @(default), json) getter]; \
+}
+
 /**
  * This macro is used for creating converter functions for typed arrays.
  */

React/Base/RCTConvert.m

@@ -175,6 +175,22 @@ NSNumber *RCTConvertEnumValue(const char *typeName, NSDictionary *mapping, NSNum
   return value ?: defaultValue;
 }
 
+NSNumber *RCTConvertMultiEnumValue(const char *typeName, NSDictionary *mapping, NSNumber *defaultValue, id json)
+{
+  if ([json isKindOfClass:[NSArray class]]) {
+    if ([json count] == 0) {
+      return defaultValue;
+    }
+    long long result = 0;
+    for (id arrayElement in json) {
+      NSNumber *value = RCTConvertEnumValue(typeName, mapping, defaultValue, arrayElement);
+      result |= [value longLongValue];
+    }
+    return @(result);
+  }
+  return RCTConvertEnumValue(typeName, mapping, defaultValue, json);
+}
+
 RCT_ENUM_CONVERTER(NSTextAlignment, (@{
   @"auto": @(NSTextAlignmentNatural),
   @"left": @(NSTextAlignmentLeft),

React/Modules/RCTUIManager.m

@@ -1309,6 +1309,12 @@ RCT_EXPORT_METHOD(clearJSResponder)
     @"topLoadingError": @{
       @"registrationName": @"onLoadingError"
     },
+    @"topAccessibilityTap": @{
+      @"registrationName": @"onAccessibilityTap"
+    },
+    @"topMagicTap": @{
+      @"registrationName": @"onMagicTap"
+    },
   } mutableCopy];
 
   [_viewManagers enumerateKeysAndObjectsUsingBlock:^(NSString *name, RCTViewManager *manager, BOOL *stop) {

React/Views/RCTView.h

@@ -15,8 +15,14 @@
 
 @protocol RCTAutoInsetsProtocol;
 
+@class RCTView;
+typedef void (^RCTViewEventHandler)(RCTView *view);
+
 @interface RCTView : UIView
 
+@property (nonatomic, copy) RCTViewEventHandler accessibilityTapHandler;
+@property (nonatomic, copy) RCTViewEventHandler magicTapHandler;
+
 /**
  * Used to control how touch events are processed.
  */

React/Views/RCTView.m

@@ -167,6 +167,26 @@ static NSString *RCTRecursiveAccessibilityLabel(UIView *view)
   }
 }
 
+- (BOOL)accessibilityActivate
+{
+  if (self.accessibilityTapHandler) {
+    self.accessibilityTapHandler(self);
+    return YES;
+  } else {
+    return NO;
+  }
+}
+
+- (BOOL)accessibilityPerformMagicTap
+{
+  if (self.magicTapHandler) {
+    self.magicTapHandler(self);
+    return YES;
+  } else {
+    return NO;
+  }
+}
+
 #pragma mark - Statics for dealing with layoutGuides
 
 + (void)autoAdjustInsetsForView:(UIView<RCTAutoInsetsProtocol> *)parentView

React/Views/RCTViewManager.m

@@ -17,6 +17,31 @@
 #import "RCTUIManager.h"
 #import "RCTUtils.h"
 #import "RCTView.h"
+#import "UIView+React.h"
+
+@implementation RCTConvert(UIAccessibilityTraits)
+
+RCT_MULTI_ENUM_CONVERTER(UIAccessibilityTraits, (@{
+                                        @"none": @(UIAccessibilityTraitNone),
+                                        @"button": @(UIAccessibilityTraitButton),
+                                        @"link": @(UIAccessibilityTraitLink),
+                                        @"header": @(UIAccessibilityTraitHeader),
+                                        @"search": @(UIAccessibilityTraitSearchField),
+                                        @"image": @(UIAccessibilityTraitImage),
+                                        @"selected": @(UIAccessibilityTraitSelected),
+                                        @"plays": @(UIAccessibilityTraitPlaysSound),
+                                        @"key": @(UIAccessibilityTraitKeyboardKey),
+                                        @"text": @(UIAccessibilityTraitStaticText),
+                                        @"summary": @(UIAccessibilityTraitSummaryElement),
+                                        @"disabled": @(UIAccessibilityTraitNotEnabled),
+                                        @"frequentUpdates": @(UIAccessibilityTraitUpdatesFrequently),
+                                        @"startsMedia": @(UIAccessibilityTraitStartsMediaSession),
+                                        @"adjustable": @(UIAccessibilityTraitAdjustable),
+                                        @"allowsDirectInteraction": @(UIAccessibilityTraitAllowsDirectInteraction),
+                                        @"pageTurn": @(UIAccessibilityTraitCausesPageTurn),
+                                        }), UIAccessibilityTraitNone, unsignedLongLongValue)
+
+@end
 
 @implementation RCTViewManager
 
@@ -67,6 +92,7 @@ RCT_EXPORT_MODULE()
 #pragma mark - View properties
 
 RCT_EXPORT_VIEW_PROPERTY(accessibilityLabel, NSString)
+RCT_EXPORT_VIEW_PROPERTY(accessibilityTraits, UIAccessibilityTraits)
 RCT_EXPORT_VIEW_PROPERTY(backgroundColor, UIColor)
 RCT_REMAP_VIEW_PROPERTY(accessible, isAccessibilityElement, BOOL)
 RCT_REMAP_VIEW_PROPERTY(testID, accessibilityIdentifier, NSString)
@@ -146,6 +172,27 @@ RCT_CUSTOM_VIEW_PROPERTY(borderWidth, CGFloat, RCTView)
     view.layer.borderWidth = json ? [RCTConvert CGFloat:json] : defaultView.layer.borderWidth;
   }
 }
+RCT_CUSTOM_VIEW_PROPERTY(onAccessibilityTap, BOOL, RCTView)
+{
+  view.accessibilityTapHandler = [self eventHandlerWithName:@"topAccessibilityTap" json:json];
+}
+RCT_CUSTOM_VIEW_PROPERTY(onMagicTap, BOOL, RCTView)
+{
+  view.magicTapHandler = [self eventHandlerWithName:@"topMagicTap" json:json];
+}
+
+- (RCTViewEventHandler)eventHandlerWithName:(NSString *)eventName json:(id)json
+{
+  RCTViewEventHandler handler = nil;
+  if ([RCTConvert BOOL:json]) {
+    __weak RCTViewManager *weakSelf = self;
+    handler = ^(RCTView *tappedView) {
+      NSDictionary *body = @{ @"target": tappedView.reactTag };
+      [weakSelf.bridge.eventDispatcher sendInputEventWithName:eventName body:body];
+    };
+  }
+  return handler;
+}
 
 #define RCT_VIEW_BORDER_PROPERTY(SIDE)                                  \
 RCT_CUSTOM_VIEW_PROPERTY(border##SIDE##Width, CGFloat, RCTView)         \

package.json

@@ -36,7 +36,7 @@
   ],
   "scripts": {
     "test": "jest",
-    "lint": "node linter.js Examples/",
+    "lint": "node linter.js Examples/ Libraries/",
     "start": "./packager/packager.sh"
   },
   "bin": {