Summary:
In `XMLHttpRequest`, if the responseType is `Blob`, but the response is an empty string, we return `null` from `XMLHttpRequest.prototype.response()`. Instead, we should return an empty Blob. This is the behaviour on the web. To demonstrate, run the following HTTP server with Node:
## server.js
```
const http = require('http');
const server = http.createServer();
server.on('request', (request, response) => {
if (request.url.includes('img.png')) {
console.log('sending image');
response.end('');
return;
}
response.end('Hello World!');
});
server.listen('9000');
```
Then, open up a web browser to `http://localhost:9000`, and type the following in the console:
```
var oReq = new XMLHttpRequest();
oReq.open('GET', 'http://localhost:9000/img.png', true);
oReq.responseType = 'blob';
oReq.onload = function(oEvent) {
var blob = oReq.response;
console.warn(blob);
};
oReq.onerror = function(error) {
console.warn('Error!');
};
oReq.send();
```
This warns:
```
Blob {size: 0, type: "text/xml"}
```
Changelog:
[Both][Fixed] - [RN][XMLHttpRequest] Transform empty responses into empty Blobs
Reviewed By: sahrens
Differential Revision: D19500607
fbshipit-source-id: ec35e534b32a507c8a94a29e955b7bc4c62902a0
Summary:
When I was testing React Native 0.62-rc.1, I noticed that console was showing a warning for Require Cycle as shown in image below

This is because ScrollResponder was importing `ScrollView` to get the `typeof ScrollView`.
I've made an export for ScrollView type in `ScrollView` so that Require cycle warning will not show up.
## Changelog
[General] [Fixed] - Remove Require cycle warning.
Pull Request resolved: https://github.com/facebook/react-native/pull/27851
Differential Revision: D19577644
Pulled By: cpojer
fbshipit-source-id: 257b9421a91244d69394375102cfbe683326bba2
Summary:
Fixes https://github.com/facebook/react-native/issues/27137
This PR fixes an issue on iOS where RCTTextView height is not calculated as it should for some fonts where font `leading` attributed is not equal to zero, which results in wrong baseline alignment behaviour.
The fix for this is by setting `usesFontLeading` property of `NSLayoutManager` to `NO`, which results is a layout behavior that is similar to `UILabel`
Probably the documentation for `usesFontLeading` describes why UILabel has a different (correct) layout behavior in that case
> // By default, a layout manager will use leading as specified by the font. However, this is not appropriate for most UI text, for which a fixed leading is usually specified by UI layout guidelines. These methods allow the use of the font's leading to be turned off.
## Changelog
[iOS] [Fixed] - Fix RCTTextView layout issue that happens on some font with `leading` attribute not equal to zero, which causes wrong base-alignment layout
Pull Request resolved: https://github.com/facebook/react-native/pull/27195
Test Plan:
Below are the test results before and after the change, and comparing that to native UILabel behavior.
The test is done with using system font and custom font (`GothamNarrow-Medium`) and font size 50
[GothamNarrow-Medium.otf.zip](https://github.com/facebook/react-native/files/3832143/GothamNarrow-Medium.otf.zip)
```js
const App: () => React$Node = () => {
return (
<View style={{flex: 1, margin: 40, flexDirection: 'row', justifyContent: 'center', alignItems: 'baseline'}}>
<View style={{width: 30, height: 30, backgroundColor: 'lightgray'}} />
<Text style={{fontSize: 50, backgroundColor: 'green', fontFamily: 'GothamNarrow-Medium'}}>{'Settings'}</Text>
</View>
);
};
```
-------
### Before the fix
<img width="962" alt="Screenshot 2019-11-11 at 16 53 26" src="https://user-images.githubusercontent.com/5355138/68601049-dd778780-04a3-11ea-879e-cc7b4eb2af95.png">
-----
### After the fix
<img width="944" alt="Screenshot 2019-11-11 at 16 55 11" src="https://user-images.githubusercontent.com/5355138/68601180-1d3e6f00-04a4-11ea-87bc-61c6fa2cdb18.png">
-----
### Using `UILabel`
<img width="805" alt="Screenshot 2019-11-11 at 16 59 28" src="https://user-images.githubusercontent.com/5355138/68601487-b2d9fe80-04a4-11ea-9a0f-c025c7753c24.png">
Differential Revision: D19576556
Pulled By: shergin
fbshipit-source-id: 4eaafdab963c3f53c461884c581e205e6426718a
Summary:
The reason for this change is that it is the primary root that we want people to be using and the naming should reflect that.
#nocancel
build-break
overriding_review_checks_triggers_an_audit_and_retroactive_review
Changelog: [Internal]
Oncall Short Name: fbobjc_sheriff
Differential Revision: D19431128
fbshipit-source-id: c7208e20ed0f5f5eb6c2849428c09a6d4af9b6f3
Summary:
Since migrating to Turbomodules (8fe04cf) the addMenuItem method crashes because the NativeEventListener methods are missing from the codegen flow type. Added the same methods based on what we do in AppState which is another native module that extends NativeEventListener.
## Changelog
[Internal] [Fixed] - Add missing NativeEventListener methods to NativeDevSettings
Pull Request resolved: https://github.com/facebook/react-native/pull/27838
Test Plan:
|Before|After|
|{F226978596}|{F226978628}
Differential Revision: D19518474
Pulled By: PeteTheHeat
fbshipit-source-id: acddba9f18dd558df1d6df78b539689fdfd0062f
Summary:
Noticed the _validateMapping call right now is a no-op, as the traverse method is never invoked. We can only really do validation once we've received a sample of an event, and can then verify the values being extracted indeed correspond with a valid key.
Changelog: [General] [Fixed] - Fix validation of event mappings for AnimatedEvent
Reviewed By: cpojer
Differential Revision: D19498971
fbshipit-source-id: e978dda895498a7e567d5e18b3181b319d88d95c
Summary:
Hand-writing a JS view config for AndroidTextInputNativeComponent.
This diff was generated by adding logging to `getNativeComponentAttributes`. Diff preview: https://our.intern.facebook.com/intern/diff/view-version/96875488/
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D19456328
fbshipit-source-id: b2d5abd2fde380be182b95881c335d24481343f1
Summary:
Add Native Commands handlers to TextInput.
It is intentionally done in a way so that it can be easily swapped for codegened implementation once we properly type TextInput.
We also add native commands to view managers for backwards compatibility.
Changelog: [Internal]
Reviewed By: TheSavior, shergin
Differential Revision: D19412026
fbshipit-source-id: 8dc64275cf1da599b1bd5992a41035d51dd4148f
Summary: Changelog: [Fix] Fix status bar color not updating when navigating between two screens with the same status bar color.
Reviewed By: RSNara
Differential Revision: D19439424
fbshipit-source-id: 44388f1f94c87c12102471d72183bb6c152a46b6
Summary:
Re-landing the reverted change:
This removes all callsites that rely on runtime checks to detect the target deployment version. We no longer need to check for iOS 10+ in a few places. Note: for this to compile, the hosting app needs to target iOS 10.0+.
Changelog: [iOS] [Deprecated] - Deprecate iOS 9
Reviewed By: sammy-SC
Differential Revision: D19411136
fbshipit-source-id: ec0a957dc57819f0ee7d138c858209cabe3e5102
Summary:
This removes all callsites that rely on runtime checks to detect the target deployment version. We no longer need to check for iOS 10+ in a few places. Note: for this to compile, the hosting app needs to target iOS 10.0+.
Changelog: [iOS] [Deprecated] - Deprecate iOS 9
Reviewed By: hramos
Differential Revision: D19271321
fbshipit-source-id: 424ad7e2161261d148cb436cc20b4c531a4ba5b7
Summary:
In D15393464, we introduced `NativeHeapCapture`, but it had a few problems:
1. It required `JSCHeapCapture` by doing `TurboModuleRegistry.get<Spec>('HeapCapture')`, when it should have done `TurboModuleRegistry.get<Spec>('JSCHeapCapture')`.
2. It had an additional method `captureHeap`, which didn't exist on the Android NativeModule.
This diff corrects those mistakes.
Changelog:
[Both][Fixed] - Fix JSCHeapCapture
Reviewed By: PeteTheHeat
Differential Revision: D19383511
fbshipit-source-id: 30e69afbcdba673f3f32c16bde4f0342568ab97d
Summary:
Fabric doesn't support setNativeProps, so we are using view commands instead.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D18044169
fbshipit-source-id: d5f199b930244d02f174ea8a7ef732e9a8ef2476
Summary:
As a part of the migration from setNativeProps in Fabric and Paper, we are replacing it by view commands in the RefreshControl component on Android.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D18475450
fbshipit-source-id: ad89547fada3444f725fd9b00e8482cfc8f4d7fc
Summary:
As a part of the migration from setNativeProps in Fabric and Paper, we are replacing it by view commands in the Checkbox component on Android.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D18451749
fbshipit-source-id: 49d786ef3383df95b10260ba2b7f68489ad31789
Summary:
RCTTextInputUtils contains a bunch of conventions and convenience functions that we use in TextInput.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: JoshuaGross
Differential Revision: D19226658
fbshipit-source-id: df72dcdc052b96b6daef2cc0839235761005d914
Summary:
Bridgeless mode hasn't been able to load random images. I was able to repro this 100% with base64 images. Loading these images hits a particular flow in `RCTImageLoader` which relies on the bridge to access `RCTNetworking`. This diff uses the TM Lookup Delegate as a fallback.
Changelog: [iOS][Internal] Fix error in RCTImageLoader in bridgeless mode
Reviewed By: sammy-SC
Differential Revision: D19331467
fbshipit-source-id: 8239ee258425da4ed8cb9f6dcdcd7f37c162eb19
Summary:
When bridge is nil, RCTBlobManager crashes with `EXC_BAD_ACCESS`.
The fix: instead of using the bridge to find RCTNetworking, use TM lookup delegate.
Changelog: [iOS][Internal] Fix crash in RCTBlobManager in bridgeless mode
Reviewed By: mdvacca
Differential Revision: D19320136
fbshipit-source-id: 49aabb3ce53b2ec620fcc02be1c6c1b44066f440
Summary:
View should reset whether we are inside of a text or not. For example, inline images should only be rendered inside text, but if we have a view inside text, then it should render a regular image, not an inline image.
This logic *should* exist in native instead of in JS, but this is an easier change for now.
I'm sad to have to turn this back into a JS component instead of just being the string 'RCTView' as this will have performance implications on all surfaces, but this is how it always used to be so maybe it's fine.
This example previously crashed, and no longer does:
```
function PlaygroundContent(props: {}) {
return (
<View style={styles.container}>
<Text>
<View style={{width: 10, height: 10}}>
<Image source={fbicon.filled('chevron-down', 10)} />
</View>
</Text>
</View>
);
}
```
Changelog:
[General][Fixed] Fixes bug where <Text><View><Image> would crash.
Reviewed By: JoshuaGross
Differential Revision: D17564510
fbshipit-source-id: 0ecf49b3d466e7adf57a46a7a097dd3798c721a4
Summary:
We're keeping the perf logging flag, but the general instrumentation flag is no longer needed (the use case isn't significant to need separate flag).
Changelog: [Internal]
Reviewed By: JoshuaGross
Differential Revision: D19304789
fbshipit-source-id: 094f7079283e4f4bf3d546dfd0ae50eb641d562e
Summary:
Hand writing view configs for NativeImageViewComponent so that it'll work in bridgeless mode and won't fall back to the UIManager.
Changelog: [Internal]
Reviewed By: ejanzer
Differential Revision: D19217961
fbshipit-source-id: d5a123b35a75ba3e22c57b1dde18a47893681614
Summary:
It can be a pain to debug slow network issues, especially with the iOS simulator which doesn't have a network link conditioner. This makes it really easy and predictable by simply adding a `setTimeout` around calling `sendRequest`.
Changelog:
[General] [Added] - DEBUG_NETWORK_SEND_DELAY can be used to simulate slow network.
Reviewed By: PeteTheHeat
Differential Revision: D19236911
fbshipit-source-id: 14762c7e0c6408a8364aa569c482729a7a1fe740
Summary:
It is time to target SDK version 10.0+.
Changelog: [iOS] [Deprecated] - Deprecating support for iOS/tvOS SDK 9.x, 10.0+ is now required
Reviewed By: mdvacca
Differential Revision: D19265731
fbshipit-source-id: 93b6f9e8f61c5b36ff69e80d3f18256aa96cc2c0
Summary:
Changes the return type of StyleSheet.create to `$ReadOnly<S>`. At runtime, it just freezes the fields in dev mode and is the identity function otherwise. This cause 423 errors due to the wrong props being passed to different styles: P124372727
I went over errors at random with Eli to get confidence in the change.
Changelog:
[General][Fixed] Fix return type of StyleSheet.create
Reviewed By: zackargyle, TheSavior
Differential Revision: D19218817
fbshipit-source-id: b7aa10700f8333372c9f0bd61bfbef371caadf97
Summary:
In https://fb.workplace.com/groups/rn.support/permalink/3132785890103338/?comment_id=3132873900094537 we identified that when Metro restarts but the app keeps the main bundle alive, the next request for a split bundle will always produce an invalid bundle. This is because we rely on module ids being stable while Metro is running and when Metro is restarted, those module ids will likely be assigned to different modules.
The fix applied here simply forces a full reload when downloading (registering) a new split bundle if the connection to Metro disappeared.
Another way to mitigate this is to use stable module ids. That's a more involved change in Metro that I'm not planning on making right now.
Changelog: [Internal]
Reviewed By: rickhanlonii
Differential Revision: D19235555
fbshipit-source-id: b8ff10590655952a2af1379bbf4e930f9eb95c1b
Summary:
This diff removes the findShadowNodeByTag_DEPRECATED method from class UIManagerBinding. This method was created on D17175953 to implement findNodeHandle in Fabric. Recently we decided that we don't need to expose findNodeHandle anymore. This diff cleans up thi code.
Changelog: [internal]
Reviewed By: JoshuaGross
Differential Revision: D19216996
fbshipit-source-id: 07c16aeed28851afc09b0f5d6be338bb4440f813
Summary:
We currently use `UIManager.getViewManagerConfig()` in a few places to check if a view manager exists at runtime; right now these checks fail for Venice because our DummyUIManager returns null. We don't yet have a replacement for this API for Fabric (see T59411524) so for now let's just hard code the view managers that we know exist to return something truthy here. This is hacky, but it works ok for now.
Changelog: [Internal]
Reviewed By: PeteTheHeat
Differential Revision: D19185957
fbshipit-source-id: e3135b45db4c9ff27fd95362deaa3c1b4340bf48
Summary:
The logic in the method is only relevant if the sourceType is `UIImagePickerControllerSourceTypeCamera`. So we guard it here, to prevent NSInvalidArgumentException.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D19184818
fbshipit-source-id: 5c99dabfaed23629e22fdc888263bd09e8768c88
Summary:
This diff fixes two issues with LogBox in OSS.
Changelog: [Internal]
Reviewed By: mmmulani
Differential Revision: D19165696
fbshipit-source-id: 4dd9c480ea3d2b205f8e65cb32203949b1e32e8a
Summary:
When in debug mode, PlatformConstants doesn't have a `ServerHost` constant. This wasn't captured by `NativePlatformConstants`.
Changelog:
[Android][Fixed] - Make sure ServerHost is optional in NativePlatformConstants.js
Reviewed By: rickhanlonii
Differential Revision: D19091270
fbshipit-source-id: 4b3ac73a4ab6111b3e433ecca01cc769e8cdec6b