Summary:
The iOS and Android native folders of a React Native app can be difficult to maintain. This introduces a new workflow for creating and maintaining the native code of your app.
Now it will be possible to:
1. Remove the native iOS or Android folders
2. Create an `app.json` for your app, with at least a `name` and `displayName`
3. Run `react-native eject`, and the native code for your app will be generated
Then, as usual, you can run `react-native run-ios` and `react-native run-android`, to build and launch your app
For apps that don't have any native code, it will be possible to ignore the `ios` and `android` folders from version control.
Eject step tested in RN app by deleting native folders.
mkonicek, what is the best way to test `react-native init`?
As follow-up items, we can enable the following:
- Configuring app icon and launch screen from the `app.json`
- Automatically run `react-native link` for native libraries
- A
Closes https://github.com/facebook/react-native/pull/12162
Differential Revision: D4509138
Pulled By: ericvicenti
fbshipit-source-id: 0ee213e68f0a3d44bfce337e3ec43e5024bacc66
bc74dd1e14