Summary:
We've seen some crashes from exceeding property limits (>200k) from storing callbacks, which is insane since callbacks should be called and cleaned up right away in most cases. Browsing around I never see more than about 50 pending callbacks when firing off a whole much of animations and measures and stuff.
In order to track down the leak, I added some code in `__DEV__` to provide more info - hopefully some developers will hit it and report the issue. Unfortunately it's not easy to get any useful information in prod because we strip all the useful debug info, but if this continues to be a problem we could try capturing that info in prod as well (and maybe other info, too).
Reviewed By: PeteTheHeat
Differential Revision: D16267702
fbshipit-source-id: 8185bb8ff0d646b307c98238616950086b1a608f
Summary:
Previously, Fast Refresh socket was initialized lazily. This changes it to be initialized eagerly, even if Fast Refresh is off.
This makes it easier to reason about different states the app can be in. It also lets us later change the code to stash away updates even when Fast Refresh is off — and apply them when you turn it on. (That's out of scope of this diff).
This change should not be user observable. Even if setting up the socket fails, the error is saved, and should only be shown once you turn it on. (AFAIK, D16286232 fixes the last error that was shown unconditionally.)
Reviewed By: rickhanlonii
Differential Revision: D16287232
fbshipit-source-id: a88f9c9f72847074876087da46e19dffa4eb82eb
Summary: I originally added `forceFullRefresh` as an escape hatch in case Fast Refresh is too unreliable. In practice we haven't seen any major issues with it. Since this option is already very obscure, I'm just removing it.
Reviewed By: shergin
Differential Revision: D16286632
fbshipit-source-id: c3dc44cffd459912e194e273acf868f3380c64cc
Summary:
This fixes a problem that occurs when:
1. You run an Android app with Fast Refresh on
2. Kill the app
3. Start the app again
We used to redbox (on Android only). This is probably because we are missing some check on the native side, and we try to enable the socket anyway.
We could potentially fix this on the native side. But also, there's no good reason why this code needs to ever throw an error if Fast Refresh is disabled.
So I'm unifying it with the existing code path for other Fast Refresh errors. They are ignored when it's off, shown as yellowboxes when it's on, and shown as redboxes if you intentionally try to turn it off and on again.
I'm also adding core to prevent logging more than one Fast Refresh warning. Since they're not super actionable and usually indicate the same problem (e.g. Metro not running). The earliest one wins.
Reviewed By: rickhanlonii
Differential Revision: D16286232
fbshipit-source-id: bf3960f11c767a2352b1282d46950e4ba9e5031d
Summary: These warnings are both noisy and unactionable to product developers when you disconnect a Metro server. You also see them *after* the redbox is closed anyway, so you kind of already know if symbolication didn't work. So I'm downgrading it to a simple log.
Reviewed By: motiz88
Differential Revision: D16285591
fbshipit-source-id: c0e4c9168f66f4573404aa336ab889e4e9da0c22
Summary: We doesn;t support `onError: (string) => void,` is codegen so I change it to `onError: (error: string) => void,`
Reviewed By: TheSavior
Differential Revision: D16284628
fbshipit-source-id: a80a5da54823c827aa0bbe1f1f99613a35605489
Summary: Union type is not supported by codegen and doen not have any impact on generated cpp code so I feel we may get rid of this only one case in favor of any.
Reviewed By: TheSavior
Differential Revision: D16283000
fbshipit-source-id: 210a8fbb7c191031e887d66e28dca048006ce00f
Summary: Currently callback has type `callback: (result: boolean) => mixed` what is pointless (and breaks codegen), because value returning flow callback doesn't have any impact.
Reviewed By: RSNara
Differential Revision: D16282852
fbshipit-source-id: fe1036f17bff307ac91b280727eaa5bf81febd35
Summary:
@public
`reportException` is a new method on `NativeExceptionsManager` that is designed to allow more structured and flexible JS error reporting. `reportFatalException` and `reportSoftException` are now deprecated.
In addition to all the usual exception fields, `reportException` also accepts an `extraData` property which the JS exception handler can populate with arbitrary JSON-serialisable data (here: the raw stack trace, the current JS engine, and the number of frames popped off the call stack by the exception handler). The contents of `extraData` get attached as JSON to the `JavascriptException` instance (or just logged, in the case of `console.error`).
This change is backwards compatible in two senses:
1. We have a JS fallback that uses `reportFatalException` and `reportSoftException` if the new native method is unavailable.
2. We have a Java fallback that implements `reportFatalException` and `reportSoftException` in terms of `reportException`.
Naturally, both fallbacks mentioned above discard `extraData`.
NOTE: The current implementation is Android-only; for the time being, iOS will continue to use the JS fallback.
While we're in `ExceptionsManager.js`, this also changes `dismissRedbox()` to be optional (which it is, since it's Android-only); existing call sites already guard it with a null check so this requires no other changes.
Reviewed By: mmmulani
Differential Revision: D16133080
fbshipit-source-id: d0b209d58da40b736df63155bbea232e94ce635c
Summary:
This diff allows for parsing more flexible AST format.
Reusing logic used for methods, I add similar support for props and commands in components. Now it's possible to define separated type for props and commands in another part of the file.
Also, extracted this method to another file for reusing purposes.
Added tests.
Reviewed By: rickhanlonii
Differential Revision: D16221445
fbshipit-source-id: 21553bf5ade66588dd7dc0320d25333260b0ada9
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/25671
Moves the RN-specific `ReactFiberErrorDialog` implementation from React to RN for easier iteration. Also adds new unit tests.
This current change is additive, so we're compatible with the current React renderer which still uses `ExceptionsManager` and not the file added here. After the corresponding React update we can remove `ExceptionsManager` from the RN private interface entirely.
Reviewed By: cpojer
Differential Revision: D16278938
fbshipit-source-id: 0c2c0c3e65e524e079730ae3b0cc23e0c0bdc5fd
Summary: It's ok to put VLists in ScrollViews with different scroll directions.
Reviewed By: yungsters
Differential Revision: D16217209
fbshipit-source-id: 7b1c3e93c19867da7414ccda4cda8cc89d25d522
Summary:
Original commit changeset: c45409a8413e
I was unable to find the cause of the problem.
Reviewed By: yungsters
Differential Revision: D16240754
fbshipit-source-id: c1e3f0aa615422f1156706f919e8f851f82c18b0
Summary: For better compatibility re: https://github.com/facebook/react-native/pull/25393, this target should just use `RCTTypeSafety`
Reviewed By: PeteTheHeat
Differential Revision: D16210888
fbshipit-source-id: 6a55d631453cc420909247a7d5a64379587225b7
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/25583
We now use CocoaPods for better maintainability.
Reviewed By: hramos
Differential Revision: D16193719
fbshipit-source-id: 26382f2da4eaba14a71771540b587fdc80b41108
Summary: For now, suppress this warning - they are harmless.
Reviewed By: mdvacca
Differential Revision: D16198994
fbshipit-source-id: b167d0e98bbc4abcd0461d50f01f364d8d560aec
Summary:
We added a test to make sure button and accessibility actions would not have unwanted behavior. Additionally we added support for accessibility actions for all touchables. However we discovered that RCTTextView and possibly anything else that does not derive from RCTView does not support accessibility actions and need to be children off a component that does support it for it to not crash in ios. This became noticeable when TouchableWithoutFeedback only worked if text is a child of view on ios.
In a local branch we where able to modify RCTTextView to support accessibility actions and text no longer needed to be a child of view for it to work.
## Changelog
[General] [Added] - Button test with accessibility actions
[General] [Added] - Support for accessibility actions to all Touchables. With TouchableWithoutFeedback being a special case where text must be a child of view. (See AccessibilityExample.js for an example)
Pull Request resolved: https://github.com/facebook/react-native/pull/25582
Test Plan:
Test plan is testing in RNTester making sure the examples work
## Open Question
What would you say is the best practice for adding accessibility action support for all the components that do not extended from RCTView?
Reviewed By: cpojer
Differential Revision: D16192919
Pulled By: osdnk
fbshipit-source-id: 7d4e186ba1f30393f2b4d08a0e227b960f83586c
Summary: This fixes the following warning from appearing when you have a FlatList render a Modal where the content of the Modal also contains a FlatList: https://fburl.com/p953k985. Spencer addressed an issue similar to this in D7863625, but we still get a yellow box due to the fact that `scrollContext` still exists, but `this.context.virtualizedList` is null from this line in Modal.js https://fburl.com/nqc261a1.
Reviewed By: cpojer
Differential Revision: D16160666
fbshipit-source-id: ba222d3eef234f4c8c4c2bddbc71bec27df81e0a
Summary:
returning type of Bubbling and Direct Event should be always void of Promise (if async). Other situations shouldn't be permitted.
Reformated all cases when it the function wasn't void.
Reviewed By: rickhanlonii
Differential Revision: D16165962
fbshipit-source-id: 7c1377c3ed4bd54a431a13e5bcda4f7ec0adf4dc
Summary:
I'd like to use `Modal`’s flow types in my application to make a reusable component.
## Changelog
[JavaScript] [Added] - Exported `Modal`’s types
Pull Request resolved: https://github.com/facebook/react-native/pull/25554
Test Plan: n/a
Differential Revision: D16180231
Pulled By: cpojer
fbshipit-source-id: 9cfd5163a187954783102bfe4d9b4d1dbc8c6e6d
Summary: It's pointless to handle non optional key if value has withDefaul so I'm adding a rule into parser preventing from such cases
Reviewed By: lunaleaps
Differential Revision: D16166709
fbshipit-source-id: 38cef522b217917a3a4886d857720932f2ebb475
Summary: This diff changes a few things around so that a diff coming on top of this stack will be smaller. The aim of this change is to add a method `registerEntryPoint` which will allow a client to subscribe to updates for multiple bundles.
Reviewed By: gaearon
Differential Revision: D16131963
fbshipit-source-id: d460d6647b15a711021c7a3a51f52486a1aea535
Summary:
Running a PROD JS bundle with a DEV binary used to redbox with Fast Refresh on. The error said "HMRClient is not a registered callable module".
This isn't a new issue: https://www.google.com/search?q=%22hmrclient%20is%20not%20a%20registered%22. However, now it happens every time because `setup()` is now called unconditionally in a DEV native build.
Because a combination of DEV binary + PROD JS is technically possible, I'm adding a tiny shim that will make it a no-op instead of crashing. It will also explain what's wrong if you *intentionally* try to turn on Fast Refresh.
Reviewed By: sahrens
Differential Revision: D16145378
fbshipit-source-id: 0b9c0a6f30c02ca7f4a0133048450bdde3576ad2
Summary: These files are generated by tool, not for manual edit. So let this marker tell IDEs so.
Reviewed By: hramos, cpojer
Differential Revision: D16097171
fbshipit-source-id: 1f98a4d4e21acca0a7fbd386ff174dd9197c2129
Summary:
This PR adds initial support for Project Catalyst a.k.a. UIKitForMac. This is not yet meant for production, but this is enough for RNTester to successfully compile and mostly work :)
Some APIs are not supported on the Mac -- e.g. telephony, and deprecated APIs are removed on Mac ���-- those had to be ifdef'd out via platform checks.
The biggest limitation right now is that I couldn't get Web Socket code to successfully compile, and so there are a lot of temporary platform checks for that , and the RCTWebSocket.xcodeproj is marked as not supporting UIKitForMac. Again -- temporary, until someone with more knowledge knows how to fix this.
https://github.com/react-native-community/discussions-and-proposals/issues/131
## Changelog
[iOS] [Added] - Fixed compilation for macOS (Project Catalyst) -- not meant for production use yet
Pull Request resolved: https://github.com/facebook/react-native/pull/25427
Test Plan:
- Open RNTester/RNTester.xcodeproj with Xcode 10.2, run it like a normal iOS app -- make sure it compiles and runs correctly (no regression)
- Open the same project with Xcode 11 beta 2 (or higher) on macOS Catalina beta, select "My Mac" as device target, and run -- see that it actually compiles and runs. **Note** there are unfortunately some required steps:
- change build configuration to Release (because packager doesn't work correctly yet)
- change development team to yours if Xcode tells you to
- go to RNTester project → Build phases → Link binary with libraries, and change `platforms` for `libRCTWebSocket.a` to `iOS` (without Mac compatibility). I can't commit that change because it breaks compatibility with earlier Xcode versions
The two extra steps for successful compile will disappear once web socket compilation for Catalyst is fixed
Reviewed By: mmmulani
Differential Revision: D16088263
Pulled By: sammy-SC
fbshipit-source-id: 9c0b932b048e50a8e0f336eaa0612851b1909cae
Summary: There is a `setUpDeveloperTools.js` and a `setupDevtools.js` files. While they do set up different devtools it is very confusing to have these two files. This diff inlines one in the other which should bring more clarity.
Reviewed By: gaearon
Differential Revision: D16121236
fbshipit-source-id: 45641c7af9639ede6dc237ac53b763cd804a05c2
Summary:
This adds a few more methods that are forwarded to Metro, most notably `console.group`, `console.groupCollapsed` and `console.groupEnd`. When using `console.group`, node.js's `console` implementation will use indentation for log messages. `console.groupCollapsed`, for now, will simply not print anything to the console. This removes all of the Relay information that was impossible to look at in Metro before.
In the future, I'd like to consider somehow including collapsed groups in the output with a way to interact and navigate through them but for now, if people would like to debug Relay queries, they should use whatever they have been using before Metro had logs.
Reviewed By: gaearon
Differential Revision: D16108266
fbshipit-source-id: 97337d93eed0b8cb464df78b59ade1fe340b7f6f
Summary:
This simplifies the first log message for every single reload. Here are the changes:
* I dropped the "application" word because at Facebook we consider these views "surfaces". However, the method is explicitly called "runApplication" because in open source most people will only have a single "application". Removing the word and instead relying on the user specified string avoids the naming problem and doesn't take away from the information.
* I removed the `__DEV__` and performance optimization log. The way RN is set up, developers will always have the correct settings for these in either dev or prod and printing them every time is superfluous. Also, it had a typo. How is it possible nobody ever noticed this?
* I also simplified the invariant below to be half as long. I think it still has the same amount of information with fewer words (this is shown in a RedBox where there isn't that much space)
Reviewed By: rubennorte
Differential Revision: D16108248
fbshipit-source-id: 57351c68fa855c02bfbb1db6416d8db61eab4c19
Summary: Visible property isn't used by native modal, neither in iOS nor in Android
Reviewed By: osdnk
Differential Revision: D16107927
fbshipit-source-id: 6f8b8db11abc0942f5af3abcc0245bc066da8c6b
Summary: D16107933 disabled the logs around setup unless they are explicitly enabled and this diff disables all logs from this module entirely unless they are explicitly turned on at the top of the file.
Reviewed By: gaearon
Differential Revision: D16108151
fbshipit-source-id: 355aaf8624fb0778884f25f02d58fe4e1237d686
Summary: This module logs helpful messages in `__DEV__` but it only logs actionable performance logs when the flag on top of the file is enabled. This diff changes those to only log when the toggle on top of the file is enabled as well.
Reviewed By: gaearon
Differential Revision: D16107933
fbshipit-source-id: 7671bc521af984d617a0f5ffc0eacd1aa5674a62
Summary:
Using Ricky's last changes I managed to subscribe for both new and old event name.
Fixed event to proper one for codegen in native code.
Reviewed By: TheSavior
Differential Revision: D16065660
fbshipit-source-id: b5d3762d673a34bbdf5a8e60ff4d51617c8adb81
Summary:
`WithDefault` appears not to be required to be prefixed with `?` because it's option value per se.
Fixed tests, removed `?` where needed, updated snapshots and review them. Added mechanism fro throwing error when `?WithDefault` found. Add tests for it.
Reviewed By: rubennorte
Differential Revision: D16048463
fbshipit-source-id: f55ed7454aacf0b8c42944a9b5c1037ad1b360fe
Summary: This defines various sub specs to support building TurboModules that implement the codegen'ed specs.
Reviewed By: PeteTheHeat
Differential Revision: D16043221
fbshipit-source-id: 27ed532be929c11c8fe648632da8a72061cbc8b0
Summary:
This PR adds support for custom `StickyHeaderComponent` to be used in ScrollView (and by extension in FlatList, SectionList..).
Motivation: I've been working on a FlatList with hidable header that has a search field in it. Something like https://medium.com/appandflow/react-native-collapsible-navbar-e51a049b560a but using a FlatList w/ pull-to-refresh. The implementation can be found at https://snack.expo.io/vonovak/hidable-header-flatlist .
I used the `ListHeaderComponent` prop to render the custom header - as opposed to absolute positioning which is used in the linked article because I also need the loading indicator (I added `refreshing` and `onRefresh` for that) to show up above the header.
I proceeded by adding `stickyHeaderIndices={[0]}` to keep the header at the top, which seems to be the idiomatic way to do so. Then I added `Animated.View` with custom translation logic to the rendered header.
All appears to be working fine at the first sight - when you tap any item, you'll see it react to touch (red underlay). You'll also see the header becomes hidden if I scroll far enough and appears again after scrolling up. BUT - when you scroll down so that the header becomes hidden and tap the first visible item in the list, it will not react to touches! The reason is that `ScrollViewStickyHeader`
https://github.com/facebook/react-native/blob/9a84970c35d22b68fb3d8eac019c7f415a14c888/Libraries/Components/ScrollView/ScrollView.js#L984
has its own translation logic and when I tap onto the item at the top of the list, it seems like I'm tapping the item but I'm in fact tapping that `ScrollViewStickyHeader`.
I tried working around this by not specifying `stickyHeaderIndices={[0]}` and using `ListHeaderComponentStyle` prop (this needed some additional changes in https://github.com/facebook/react-native/blob/9a84970c35d22b68fb3d8eac019c7f415a14c888/Libraries/Lists/VirtualizedList.js#L786, and the animation is junky for some reason - as if the header always needed to "catch up" with the scroll offset, causing jitter) and `CellRendererComponent` (junky animations too), but concluded that allowing to specify custom `StickyHeaderComponent` is the cleanest way to make something like this work. I'm slightly surprised I needed to do all this to make such a usual pattern work - am I missing something?
## Changelog
[GENERAL] [ADDED] - allow custom StickyHeader in ScrollView-based components
Pull Request resolved: https://github.com/facebook/react-native/pull/25428
Test Plan: This is a minor change that should not break anything; tested locally.
Differential Revision: D16073016
Pulled By: cpojer
fbshipit-source-id: cdb878d12a426068dbaa9a54367c1190a6c55328
Summary:
See https://fb.workplace.com/permalink.php?story_fbid=2337018256625463&id=100009037038038&substory_index=58 for motivation.
I opted for using a substring that is unlikely to come up in warnings in product code but is shared across all lean core warnings. I think this is good enough and won't require updates every time we deprecate a new module.
Reviewed By: yungsters
Differential Revision: D16073431
fbshipit-source-id: 136b9e8ab53c85d2de5ed7844780f5d082087a7d
Summary:
It's not needed to keep required providing default values even if they are not actually relevant.
Here I add a support for `null`, `0` of `false` instead by default and remove throwing errors if no other default value provided.
Reviewed By: rubennorte
Differential Revision: D16049047
fbshipit-source-id: bc4961af3873190568f2753fc4ec975354896df5
Summary:
It appears that `(e: BubblingEvent<T>) = mixed` exists only in given context and it's pointless to keep in this way. It could be simplified to `BubblingEventHandler<T>` without any negative consequences and that's the motivation of this diff.
The only tradeoff of this decision is leaving an opportunity to declare Bubbling/Direct event in the top of the file bc then analysing the code becomes much more difficult. However, it's not used anywhere so it's not a problem now and probably any time.
Also, changes the names to `DirectEventHandler` and `BubblingEventHandler` which are more related to current state. The names were updated in many places in code.
Reviewed By: rubennorte
Differential Revision: D16054571
fbshipit-source-id: 741d075eb46b80bac8eb73a6b30fc0b448cb3902
Summary:
This breaks virtualization, viewability callbacks, and other features, so should be warned against.
Hopefully this would have made D15890785 trivial to figure out.
Reviewed By: PeteTheHeat
Differential Revision: D16040939
fbshipit-source-id: 593cd5da9891450fdcb501aef41455cf2d7baa4f
Summary:
This diff adds a way for the codegen to handle view configs with non-standard top event names by adding a `paperTopLevelNameDeprecated` field to events in the schema.
## The problem
The problem this is solving is that Android host components build their own options for event settings in the view config. So instead of enforcing `onChange` to use the top level event name `topChange` like iOS does, Android can use `change` or `forbarChange` or anything the person adding the component wanted at the time:
```
// Expected
topChange: {
registrationName: 'onChange',
},
// Android
bringBackStargateYouCowards: {
registrationName: 'onChange',
},
```
This is possible because of the way Android builds these settings
```
// On iOS, notice that there's no option to change the top level name:
RCT_EXPORT_VIEW_PROPERTY(onChange, RCTDirectEventBlock);
// On Android, you provide the top level event name
Override
public Map getExportedCustomDirectEventTypeConstants() {
return MapBuilder.of(
"bringBackStargateYouCowards",
MapBuilder.of("registrationName", "onChange"));
}
```
Since the codegen does not allow us to specify the top level event name (similar to iOS), we don't have a way to customize the names to support android
## The solution
To fix this, we're adding an extra option the event flow types:
```
onBubblingChange: (event: BubblingEvent<Event, 'customBubblingName'>) => void,
onDirectChange: (event: DirectEvent<Event, 'customDirectName'>) => void,
```
These will register **both** top level names in the view config:
```
{
directEventTypes: {
// Notice the same registration name is configured for different top level events
topChange: {
registrationName: 'onChange',
},
bringBackStargateYouCowards: {
registrationName: 'onChange',
},
}
}
```
This means when either `topChange` or `bringBackStargateYouCowards` fires it will call the onChange listener. **This gives us the flexibility to rename the native event name without breaking backwards compatibility.** Old apps will work when `bringBackStargateYouCowards` is fired, and new apps with an update will work when `topChange` fires.
Note: only the correct name will be generated for Fabric so technically we don't even really need to migrate the paper names and this prop can be deleted when paper is gone.
Reviewed By: cpojer
Differential Revision: D16042065
fbshipit-source-id: 40d076b43ffbbfc6c65c3c19de481d922a2add62
Summary:
Depending on the style props of an Animated.View it may be optimised away
by the NativeViewHierarchyOptimizer, which will make the animation to
fail, because the native view is virtual (it does not exists
in the native view hierarchy).
Although the createAnimatedComponent already sets the collapsable property
based on the this._propsAnimated.__isNative flag, it won't work on all
cases, since the __isNative flag is only set when one starts the animation.
Which won't cause a re-render to occuor, thus not setting the collapsable
property to false.
In order to prevent this issue the HOC will just set the collapsable property
to false.
## Changelog
[Javascript] [Fixed] - Properly set collapsable to false before starting a nativeDriver animation
Pull Request resolved: https://github.com/facebook/react-native/pull/25361
Test Plan:
### **Without this patch:**
Run the following App on an Android device without this patch and click start.
Outcome: The animation **will not** make the text invisible.
### **With this patch:**
Run the following App on an Android device with this patch and click start.
Outcome: The animation **will** make the text invisible.
```javascript
import React, { Component, ReactNode } from 'react';
import { View, Text, TouchableOpacity, Animated, StyleSheet, Easing } from 'react-native';
interface Props { }
const Constants = {
animation: {
duration: 500,
},
};
const text =
'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed orci erat. Suspendisse feugiat elit gravida elit consequat ultrices. Sed sollicitudin ullamcorper molestie. Mauris a diam neque. Vivamus in lectus.';
class App extends Component<Props> {
anim: any;
constructor(props: Props) {
super(props);
this.anim = new Animated.Value(0);
}
handleStartPress = () => {
this.anim.setValue(0);
console.log('start');
Animated.timing(this.anim, {
duration: Constants.animation.duration,
toValue: 1,
easing: Easing.linear(),
useNativeDriver: true,
}).start();
};
render(): ReactNode {
return (
<View style={styles.container}>
<Animated.View
style={{
opacity: this.anim.interpolate({
inputRange: [0, 1],
outputRange: [1, 0],
}),
}}>
<Text>{text}</Text>
</Animated.View>
<TouchableOpacity
style={styles.startButton}
onPress={this.handleStartPress}>
<Text style={styles.startButtonText}>START</Text>
</TouchableOpacity>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
alignItems: 'center',
backgroundColor: 'white',
flex: 1,
},
description: {
marginTop: 20,
paddingHorizontal: 10,
},
startButton: {
alignItems: 'center',
aspectRatio: 1,
backgroundColor: 'yellow',
borderRadius: 100,
height: 50,
justifyContent: 'center',
},
startButtonText: {
fontSize: 10,
fontWeight: 'bold',
},
});
export default App;
```
Closes https://github.com/facebook/react-native/issues/25318
Differential Revision: D15983822
Pulled By: cpojer
fbshipit-source-id: 1d790fbddc3103a2e34e114db956fa1fb465c1c9
Spencer Ahrens
Chris Blappert
Dan Abramov
Michał Osadnik
Moti Zilberman
Abhishek Ghosh
Samuel Susla
Kevin Gozali
Kevin Gonzales
David Vacca
Blair Vanderhoof
Christoph Nakazawa
Cory Reed
Bruno Lemos
Radosław Pietruszewski
Vojtech Novak
Rick Hanlon
Guilherme Iscaro
