Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48188
Yoga is full of bugs! Some of these bugs cannot be fixed without breaking large swaths of product code. To get around this, we introduced "errata" to Yoga as a mechanism to preserve bug compatibility, and an `experimental_layoutConformance` prop in React Native to create layout conformance contexts. This has allowed us to create more compliant layout behavior for XPR.
This prop was originally designed as a context-like component, so you could set a conformance level at the root of your app, and individual components could change it for compatibility. This was difficult to achieve at the time, without introducing a primitive like `LayoutConformanceView`, which itself participated in the view tree. This prop has not been the desired end-goal, since it does not make clear that it is setting a whole new context, effecting children as well!
Now that we've landed support for `display: contents`, we can achieve this desired API pretty easily.
**Before**
```
import {View} from 'react-native';
// Root of the app
<View {...props} experimental_layoutConformance="strict">
{content}
</View>
```
**After**
```
import {View, experimental_LayoutConformance as LayoutConformance} from 'react-native';
// Root of the app
<LayoutConformance mode="strict">
<View {...props}>
{content}
</View>
</LayoutConformance>
```
Changelog: [Internal]
Reviewed By: javache
Differential Revision: D66910054
fbshipit-source-id: e6a304b5c30ad3c5845a7ce2d1021996a74c2f34
Tim Yung
Nick Gerleman