Summary: I have disected lint warnings fixes to several PRs. This one fixes lint warnings under Libraries/Utility path.
Closes https://github.com/facebook/react-native/pull/4444
Reviewed By: svcscm
Differential Revision: D2705303
Pulled By: spicyj
fb-gh-sync-id: c745ac62cbff30d6bb9478a1d2465fe56b305f0c
Summary: We should pick 2 callbacks from pickerCallbacks and pickerCancelCallbacks arrays and call them depens on args.
Closes https://github.com/facebook/react-native/pull/4411
Reviewed By: svcscm
Differential Revision: D2703209
Pulled By: javache
fb-gh-sync-id: 7d2d7c63b933a66a1ff600663c3a7fcc821c750b
Summary: Before that it was not possible to get a ref to a navigation bar (unless using Navigator's internal `_navBar` prop)
Closes https://github.com/facebook/react-native/pull/3755
Reviewed By: svcscm
Differential Revision: D2674315
Pulled By: nicklockwood
fb-gh-sync-id: 26120f7bcbb675e8217b8bd963dcc6ed314d4ba3
Summary: public
[MKPinAnnotationView redPinColor] is only supported on iOS 9 and later. This caused React Native to crash on iOS 8 and earlier.
This fixes the crash by providing a forked implementation for different OS versions.
Reviewed By: tadeuzagallo, javache
Differential Revision: D2702737
fb-gh-sync-id: cd8984f1f3d42989001f3c571e325f1b4ba09ac8
Summary: public
onFocus and onBlur were not firing for multiline TextInputs.
Reviewed By: tadeuzagallo
Differential Revision: D2699846
fb-gh-sync-id: 7e64309bc631a42a99f989f615fef927dc50217c
Summary: public
RCTUIManager is a public module with several useful methods, however, unlike most such modules, it does not have a JS wrapper that would allow it to be required directly.
Besides making it more cumbersome to use, this also makes it impossible to modify the UIManager API, or smooth over differences between platforms in the JS layer without breaking all of the call sites.
This diff adds a simple JS wrapper file for the UIManager module to make it easier to work with.
Reviewed By: tadeuzagallo
Differential Revision: D2700348
fb-gh-sync-id: dd9030eface100b1baf756da11bae355dc0f266f
Summary: Per issue #1925, add support for Polyline to MapView.
Briefly, if you have a MapView declared as:
<MapView
annotations={this.state.annotations}
overlays={this.state.overlays}
style={styles.map}
region={this.state.region}
ref="mapView"
/>
then setting
this.state.overlays = [{
coordinates: [
{ latitude: 35.5, longitude: -5.5 },
{ latitude: 35.6, longitude: -5.6 },
...
],
strokeColor: 'rgba(255, 0, 0, 0.5)',
lineWidth: 3,
}];
will draw a red line between the points in locations with a width of 3 and equally blended with the background.
Closes https://github.com/facebook/react-native/pull/4153
Reviewed By: svcscm
Differential Revision: D2697347
Pulled By: nicklockwood
fb-gh-sync-id: a436e4ed8d4e43f2872b39b4694fad7c02de8fe5
Summary: public
We're seeing related crashes. The diff has no tests, the perf tests weren't conclusive, and the person who'd be supporting it no longer is available to work on it. We can try this again later in a less rushed manner with proper perf testing.
Reviewed By: davidaurelio
Differential Revision: D2696615
fb-gh-sync-id: 3b6814ac12af19516146d5c42d2add8321b10db5
Summary: public
This diff extends RCTMap annotations with an `image` and `tintColor` property, which can be used to render completely custom pin graphics.
The tintColor applies to both regular pins and custom pin images, allowing you to provide varied pin colors without needing multiple graphic assets.
Reviewed By: fredliu
Differential Revision: D2685581
fb-gh-sync-id: c7cf0af5c90fd8d1e9b3fec4b89206440b47ba8f
Summary: ~~This is a WIP, just finished the first bit and wanted to get some feedback to see if this approach seems appropriate, as I haven't done a lot of Android development.~~
Looks ready for review now.
Closes https://github.com/facebook/react-native/pull/3791
Reviewed By: svcscm
Differential Revision: D2672262
Pulled By: mkonicek
fb-gh-sync-id: 1e8f1cc6658fb719a68f7da455f30a7c9b1db730
Summary: This PR includes a working interface to Android's `elevation` property implemented as an RN style. Elevation is the only (easy) [platform-supported way to create shadows](http://developer.android.com/training/material/shadows-clipping.html). For it to work note that you must be running on Android 5.0+, and add `elevation` to a view with a `backgroundColor` set. These are platform limitations.
This PR is not intended to be merged in its current state, but rather to inform the discussion from #2768. At a minimum, before merging we would need to add the elevation style to the docs and rebase this to master (**EDIT** I have now rebased on master because from v0.14.2 too many commits were being pulled in -- haven't tested it since the rebase though). Additionally, it might be good to add tests, although I couldn't find any for the Android code. I'm happy to get that done if this feature gets signed off by the React Native team.
Finally, as I argued in #2768 I think that `elevation` is a useful abstraction ov
Closes https://github.com/facebook/react-native/pull/4180
Reviewed By: svcscm
Differential Revision: D2684746
Pulled By: mkonicek
fb-gh-sync-id: 825f3ccd20c4b0eea9d11b5f0e3a6b018b7e4378
Summary: Fix for [Issue 1331](https://github.com/facebook/react-native/issues/1331). Sets navigator.product to ReactNative and navigator.productSub to the version string in package.json.
Note that the code requires package.json, which works fine in the RN packager, but webpack users will probably a need to configure a json loader in their config file.
Tested using UIExplorer and console.log printout of the product variables in xcode and Chrome debugger.
Closes https://github.com/facebook/react-native/pull/4083
Reviewed By: svcscm
Differential Revision: D2696881
Pulled By: vjeux
fb-gh-sync-id: 511446432dcd0ec658100715129c77153e743423
Summary: public
Replaces the usage of forEach() with a for loop on a hot code path
Reviewed By: tadeuzagallo
Differential Revision: D2690727
fb-gh-sync-id: b7cbcda5cf80a0e31753f49c01e145abb789f3e5
Summary: public
The `bridge.modules` dictionary provides access to all native modules, but this API requires that every module is initialized in advance so that any module can be accessed.
This diff introduces a better API that will allow modules to be initialized lazily as they are needed, and deprecates `bridge.modules` (modules that use it will still work, but should be rewritten to use `bridge.moduleClasses` or `-[bridge moduleForName/Class:` instead.
The rules are now as follows:
* Any module that overrides `init` or `setBridge:` will be initialized on the main thread when the bridge is created
* Any module that implements `constantsToExport:` will be initialized later when the config is exported (the module itself will be initialized on a background queue, but `constantsToExport:` will still be called on the main thread.
* All other modules will be initialized lazily when a method is first called on them.
These rules may seem slightly arcane, but they have the advantage of not violating any assumptions that may have been made by existing code - any module written under the original assumption that it would be initialized synchronously on the main thread when the bridge is created should still function exactly the same, but modules that avoid overriding `init` or `setBridge:` will now be loaded lazily.
I've rewritten most of the standard modules to take advantage of this new lazy loading, with the following results:
Out of the 65 modules included in UIExplorer:
* 16 are initialized on the main thread when the bridge is created
* A further 8 are initialized when the config is exported to JS
* The remaining 41 will be initialized lazily on-demand
Reviewed By: jspahrsummers
Differential Revision: D2677695
fb-gh-sync-id: 507ae7e9fd6b563e89292c7371767c978e928f33
Summary: public
Ability to efficiently remove all keys with a particular prefix
Reviewed By: tadeuzagallo
Differential Revision: D2658741
fb-gh-sync-id: 3770f061c83288efe645162ae84a9fd9194d2fd6
Summary: this change will allow the slider to have different thumb images .
Sets an image for the thumb. It only supports static images
Closes https://github.com/facebook/react-native/pull/3849
Reviewed By: svcscm
Differential Revision: D2665699
Pulled By: nicklockwood
fb-gh-sync-id: 3a767e43170074e2419067d5c8eae61668ebb5e9
Summary: public
This diff fixes the jumpy scrolling for multiline `<TextInput>` when using nested `<Text>` components to implement rich text highlighting.
The fix is to disable scrolling on the underlying UITextView, and nest it inside another UIScrollView that we control.
Reviewed By: ericvicenti, tadeuzagallo
Differential Revision: D2674670
fb-gh-sync-id: bacee3ae485523cc26ca8102b714e081df230629
Summary: Got bitten lately by View.js returning different component based on `__DEV__`
Adding a warning in the render method that should make it cleaner in the future that this method is not actually being used in prod mode.
Closes https://github.com/facebook/react-native/pull/4322
Reviewed By: svcscm
Differential Revision: D2691880
Pulled By: vjeux
fb-gh-sync-id: 119672740969a857ab6288b7914d52e8d40a1d95
Summary: Adds a "Dismiss All" button to YellowBox for people who see litter on the ground and continue walking. (Just kidding).
public
Reviewed By: vjeux
Differential Revision: D2691764
fb-gh-sync-id: 9746b42bc1e5dc51f2320880f47f8cb17b952570
Summary: This code generation executes eagerly and these functions are fairly large and takes time to compile.
However, I'm mostly doing this change because it significantly increases the Prepack binary file size.
In theory, there might be a slight impact on the first use of these interpolators but I couldn't really tell.
An alternative would be to create a factory that is called by the components at an appropriate time, or to just refactor the whole thing to use Animated.
I didn't want to dig too deeply for a single component though.
public
Reviewed By: vjeux
Differential Revision: D2687296
fb-gh-sync-id: 6fc8cdf54dfb6f0b50c11db973d67d114bbc7400
Summary: public
Any uncaught exception inside an event emitter handler was reported as softError, which didn't crash the app, but left the app running in an unknown state. Since there's no way for the app to catch these softerror (to provide a fallback error view, etc), let's change it to report fatal error for uncaught exception for the time being.
Reviewed By: javache
Differential Revision: D2685322
fb-gh-sync-id: 52956d3db20809cc90448bd080795754b899435e
Summary: public
The gesture that moves scene around should only be attached when the
move starts at the moment that the first move is granted.
No move would ever be granted if the move event is prevented by the
decendent children (e.g. a slider component).
For now, the move gesture is attached at `onPanResponderGrant`
instead of `onPanResponderMove` thus we'd create "ghost-move-gesture"
when no actual moves is received my the navigator.
Reviewed By: fkgozali
Differential Revision: D2683802
fb-gh-sync-id: 50ae877787167511df48378304bd2ad665c73300
Summary: public Add measure() family of methods which allow to easily swizzle methods for profiling
Reviewed By: tadeuzagallo
Differential Revision: D2679904
fb-gh-sync-id: 3724440e1bdaca9e854f4d4124a897a204966dc7
Summary: public
A missing return statement in RCTImageLoader meant that cached images would be loaded twice - once from cache and again from the source.
This was mostly innocuous, causing only a slight perf regression due to the image cache being effectively disabled, however in some cases (such as RCTImageEditingManager.cropImage) it caused the success callback to fire twice, resulting in a crash.
Reviewed By: fkgozali
Differential Revision: D2684956
fb-gh-sync-id: 7580a6fbfe00a30807951803e04bfcdbee3bb80a
Summary: This adds a persistent cookie store that shares cookies with WebView.
Add a `ForwardingCookieHandler` to OkHttp that uses the underlying Android webkit `CookieManager`.
Use a `LazyCookieHandler` to defer initialization of `CookieManager` as this will in turn trigger initialization of the Chromium stack in KitKat+ which takes some time. This was we will incur this cost on a background network thread instead of during startup.
Also add a `clearCookies()` method to the network module.
Add a cookies example to the XHR example. This example should also work for iOS (except for the clear cookies part). They are for now just scoped to Android.
Closes#2792.
public
Reviewed By: andreicoman11
Differential Revision: D2615550
fb-gh-sync-id: ff726a35f0fc3c7124d2f755448fe24c9d1caf21
Summary: public
Dynamically profile events from RelayProfiler if available. This will expose time spent in Relay in the systraces.
Reviewed By: tadeuzagallo
Differential Revision: D2674215
fb-gh-sync-id: d5f9d529b86d267a80b0cda2223f6a28a08ac385
Summary: The recent commits for RecyclerViewBackedScrollView introduced a bunch of Flow errors.
Disable Flow for now in `ReactNativeViewPool` as it looks like that file doesn't use Flow :)
public
Reviewed By: gabelevi
Differential Revision: D2679974
fb-gh-sync-id: 71512f403e3fa271f6c0fa1a64e877ca1750f675
Summary: public
Native view recycling implementation based on limited pools of views.
In this diff I introduced new UIManager method: dropViews. Instead of removing views from tag->view maps when they are detached we keep them there until we get a call to dropViews with the appropriate tag. JS may keep a pool of object and selectively decide not to enqueue drop for certain views. Then instead of removing those views it may decide to reuse tag that has been previously allocated for a view that is no longer in use.
Special handling is required for layout-only nodes as they only can transition from layout-only to non-layout-only (reverse transition hasn't been implemented). Because of that we'd loose benefits of view flattening if we decide to recycle existing non-layout-only view as a layout-only one.
This diff provides only a simple and manual method for configuring pools by calling `ReactNativeViewPool.configure` with a dict from native view name to the view count. Note that we may not want recycle all the views (e.g. when we render mapview we don't want to keep it in memory after it's detached)
Reviewed By: davidaurelio
Differential Revision: D2677289
fb-gh-sync-id: 29f44ce5b01db3ec353522af051b6a50924614a2
Summary: public
Changed ListView to use onLayout and onContentSizeChange (new) events instead of measure. Updated ScrollView implementation to support contentSizeChange event with an implementation based on onLayout attached to the content view. For RecyclerViewBackedScrollView we need to generate that event directly as it doesn't have a concept of content view.
This greatly improves performance of ListView that uses RecyclerViewBackedScrollView
Reviewed By: mkonicek
Differential Revision: D2679460
fb-gh-sync-id: ba26462d9d3b071965cbe46314f89f0dcfd9db9f
Summary: public
I had previously assumed (based on past experience and common wisdom) that `[UIImage imageWithData:]` was safe to call concurrently and/or off the main thread, but it seems that may not be the case (see https://github.com/AFNetworking/AFNetworking/pull/2815).
This diff replaces `[UIImage imageWithData:]` with ImageIO-based decoding wherever possible, and ensures that it is called on the main thread wherever that's not possible/convenient.
I've also serialized access to the `NSURLCache` inside `RCTImageLoader`, which was causing a separate-but-similar crash when loading images.
Reviewed By: fkgozali
Differential Revision: D2678369
fb-gh-sync-id: 74d033dafcf6c412556e4c96f5ac5d3432298b18
Summary: public
In a previous diff I've removed a need for using View attributes in requireNativeComponent. Thanks to that we can now use requireNativeComponent in View module. In a follow up diff I'll be getting rid of ReactNativeViewAttributes.
Reviewed By: sahrens
Differential Revision: D2676088
fb-gh-sync-id: d5d6e50f4629bd7982b90f3496e1fd22078e96a8
Summary: I've added a subject property to the ActionSheetIOS.showShareActionSheetWithOptions options object. This will allow users to set a subject for things like emails when they are sharing to them through the ActionSheetIOS.
Options are now as follows:
```
{
url: 'https://code.facebook.com',
message: 'message to go with the shared url',
subject: 'a subject to go in the email heading',
}
```
Closes https://github.com/facebook/react-native/pull/4238
Reviewed By: svcscm
Differential Revision: D2674536
Pulled By: nicklockwood
fb-gh-sync-id: 3dfad39f94f19999233bf777253ef71b6e692a6d
Summary: Allow an html5 video to be played inline. (see #3112)
Closes https://github.com/facebook/react-native/pull/3137
Reviewed By: svcscm
Differential Revision: D2674318
Pulled By: nicklockwood
fb-gh-sync-id: cf71e4039c7027f1468370ae3ddef6eb3e2d2d4f
Summary: Was trying to remove the compass from the map and thought I would contribute to the project for everyone.
Closes https://github.com/facebook/react-native/pull/4225
Reviewed By: svcscm
Differential Revision: D2674060
Pulled By: nicklockwood
fb-gh-sync-id: 66f069dfc53fdeae8aaab76980146296cea1140f
Summary: public
Recent refactoring of `XMLHttpRequestBase` made use of `abortRequest` instead of the existing `cancelRequest` in iOS. This will simply alias `abortRequest` to `cancelRequest`.
Reviewed By: nicklockwood
Differential Revision: D2671189
fb-gh-sync-id: 6987d004e5a54973c330e19a1baba19ee41170f0
Summary: public
Make sure some modules that are only available in dev mode are only
included in dev bundles.
Depends on: D2663838
Reviewed By: davidaurelio
Differential Revision: D2663889
fb-gh-sync-id: 42be40b865ef305828b3519556125af090ec61f4
Summary: public
We were calling constantsToExport twice for every ViewManager, and including two copies of the values in __fbBatchedBridgeConfig. This diff removes the copy from UIManager and then puts it back on the JS side.
Reviewed By: tadeuzagallo
Differential Revision: D2665625
fb-gh-sync-id: 147ec4bfb404835e3875964476ba233d619c28aa
Summary: Hi,
I'm currently building an app that changes metadata, does some resizes, maybe watermarking ...etc. I want to use RCTImageStoreManager to store the original image in memory and allow me to command different modifications from javascript as it gives me more flexibility. As RCTImageEditingManager does for example.
But currently the RTCImageStoreManager uses UIImage to store the image, the problem is that UIImage losses metadata.
So i suggest we change it to NSData.
Additionally I added a method to remove an image from the store.
A related PR can be found here https://github.com/lwansbrough/react-native-camera/pull/100.
Closes https://github.com/facebook/react-native/pull/3290
Reviewed By: javache
Differential Revision: D2647271
Pulled By: nicklockwood
fb-gh-sync-id: e66353ae3005423beee72ec22189dcb117fc719f
Summary: this change will allow the slider to have different track images.
Sets an image for the sliderIOS's track. It only supports images that are included as assets.
Closes https://github.com/facebook/react-native/pull/3850
Reviewed By: svcscm
Differential Revision: D2659680
Pulled By: nicklockwood
fb-gh-sync-id: faf6ddea1077b081c1fc05f8f110b669cef9902c
Summary: public
Removed redundant calls to [RCTNetwork canHandleRequest] in release mode when loading images, and improved perf for handler lookups when running in debug mode.
Reviewed By: tadeuzagallo
Differential Revision: D2663307
fb-gh-sync-id: 13285154c1c3773b32dba7894d86d14992e2fd7d
Summary: Send part of the response body every 100 ms if the client has set onreadystatechange. This
is done by using the same events as the iOS code and removing the callback that Android previously
used.
Reconsolidate iOS and Android implementations.
Closes#3772
(The previous commit was reverted)
public
Reviewed By: astreet
Differential Revision: D2658153
fb-gh-sync-id: b1a32d22db7cc2995c673edd31f4bbaf16ca36cb
Summary: The touch-retention offset defines a rect around a touchable component in which the touch is retained. Easiest way to see this is to touch a button in a real navigation bar and slide your finger out of the range and back in. This diff exposes the offset as a prop (I thought touchRetentionOffset was a more informative name than pressRectOffset)
Fixes#198
Closes https://github.com/facebook/react-native/pull/713
Reviewed By: svcscm
Differential Revision: D2115370
Pulled By: shayne
fb-gh-sync-id: c3f57940dfa3806f9c88df03a01d4d65bb58cf32
Summary: public
RCTImagePicker (aka ImagePickerIOS) was previously displaying UI from a random thread, which is unsafe. This diff forces it to execute on the main thread instead.
Reviewed By: jspahrsummers
Differential Revision: D2657465
fb-gh-sync-id: 3c0fa6935061ccaa3e6ce649b4e3e8ad8c701384
Summary: public
Open-sourced the onSelectionChange event for RCTTextView, and also added onSelectionChange support for RCTTextField.
Reviewed By: javache
Differential Revision: D2647541
fb-gh-sync-id: ab0ab37f5f087e708a199461ffc33231a47d2133
Summary: This adds the basic support for embedding an image in a TextView.
Implementation details :
We create a ReactTextInlineImageShadowNode whenever an Image is embedded within a Text context.
That uses the same parsing code as ReactImageView (copied, not shared) to parse the source property to figure out the Uri where the resource is.
In ReactTextShadowNode we now look for the ReactTextInlineImageShadowNode and place a TextInlineImageSpan so that we can layout appropriately
Later at the time we go to setText on the TextView, we update that TextInlineImageSpan so that the proper Drawable (downloaded via Fresco) can be shown
public
Reviewed By: mkonicek
Differential Revision: D2652667
fb-gh-sync-id: 8f24924d204f78b8bc4d5d67835cc73b3c1859dd
Summary: I encounter issues when using ListView with multiple Sections.
```
...
var ds = new ListView.DataSource({
rowHasChanged : (row1, row2) => row1 !== row2,
sectionHeaderHasChanged : (s1, s2) => s1 !== s2
});
...
getInitialState: function() {
var sectionIDs = [0,1,2]
var rowIDs = [
[0,1,2],
[0,1,2],
[0,1,2]
]
var dataBlob = [
[blob0,blob1,blob2],
[blob3,blob4,blob5],
[blob6,blob7,blob8],
]
return {
dataSource : ds.cloneWithRowsAndSections(dataBlob, sectionIDs, rowIDs),
};
```
the code above would throw error because of duplicate key, as ''sectionID0 + rowID0 === sectionID1 + rowID1'. And I have to do:
```
...
sectionIDs.map((id)=>{
return id+'';
});
rowIDs.map((sec)=>{
return sec,map((id)=>{
return id+'';
});
});
...
```
ListView with sections does not seem to be documented yet, so I am not sure if this is the intended behaviour or am I missing anything. Co
Closes https://github.com/facebook/react-native/pull/4082
Reviewed By: svcscm
Differential Revision: D2652028
Pulled By: mkonicek
fb-gh-sync-id: a9933bac1a1ae2d6cbc73a11ef6aefde6fcdb35f
Summary: In some cases it's desirable to set the page in the ViewPager without animating it -- we have this in ScrollView with `scrollWithoutAnimationTo`. This PR adds `setPageWithoutAnimation` on ViewPager.
cc ide kmagiera
Closes https://github.com/facebook/react-native/pull/3621
Reviewed By: svcscm
Differential Revision: D2652056
Pulled By: mkonicek
fb-gh-sync-id: 6f1f38558c41ffdd863c0ebb2f046c75b5c0392c
Summary: Send part of the response body every 100 ms if the client has set onreadystatechange. This
is done by using the same events as the iOS code and removing the callback that Android previously
used.
Reconsolidate iOS and Android implementations.
Closes#3772
public
Reviewed By: mkonicek
Differential Revision: D2647005
fb-gh-sync-id: d006e566867fa47d5f8dff71219cb390bcb8e15a
Summary: public
`scrollResponderScrollNativeHandleToKeyboard` would fail silently if there is no keyboard present. This makes sure to do the correct scrolling behavior, by assuming the screen height is where the keyboard would be located.
This still might not work properly in landscape apps, but it should not make the situation worse
Also fix an issue wehre `scrollResponderKeyboardDidHide` would swallow the event
Reviewed By: vjeux
Differential Revision: D2643477
fb-gh-sync-id: f917390f4709361cc47bcd553b214833422ec05d
Summary: Move the code to the github folder, add more docs and improve the example.
We might want to merge this with `LinkingIOS` later (it has the same functionality
plus support for deep links) but want to see how people use the `IntentAndroid`
API first (and what other methods we should add) to have more data points.
public
Reviewed By: lexs
Differential Revision: D2646936
fb-gh-sync-id: 751f35784d387efcd031f9b458821cdfde048a54
Summary: This issue shows up if you have a really long left nav item. When the navigator is pushed in iOS, the long nav item will be visible alongside the new nav item.
Steps to repro:
1/ Modify Examples/UIExplorer/Navigator/NavigationBarSample.js
2/ In NavigationBarRouteMapper.LeftButton, make the following change
<Text style={[styles.navBarText, styles.navBarButtonText]}>
Very Long Title {previousRoute.title}
</Text>
3/ On iOS, get the UIExplorer project up and navigate to Navigator > Navbar Example > Next (top-right nav item) > Next
You should see the overlap.
<img width="592" alt="leftnavitem_issue" src="https://cloud.githubusercontent.com/assets/691109/11086934/b5b82e26-880a-11e5-9945-13901346a5c5.png">
With these changes the overlap is gone.
Closes https://github.com/facebook/react-native/pull/4067
Reviewed By: svcscm
Differential Revision: D2641934
Pulled By: ericvicenti
fb-gh-sync-id: 962536b97f77a3b7f176423aa11dc94f24f07332
Summary: Repeat onSubmitEditing is invalid if mutliline is set to true. Closer to the method's documentation.
Closes https://github.com/facebook/react-native/pull/4008
Reviewed By: svcscm
Differential Revision: D2639710
Pulled By: nicklockwood
fb-gh-sync-id: b7a169f0d21ac53f092278bdd32ee2d79779aa14