Summary:
When using react-native inside a monorepo with yarn workspaces the react-native installation can get hoisted and the assumption that the project is located in the folder where node_modules is is no longer true.
To handle this case I added an option to pass the path of the project root.
For example when using yarn workspace we can use something like this in the xcode scripts:
Assumes the following folder structure
/packages/myapp
/node_modules/react-native
```sh
export NODE_BINARY=node
export PROJECT_ROOT=$PWD/..
../../../node_modules/react-native/scripts/react-native-xcode.sh
```
It could be possible to change the default to `$PWD/..` since pwd is where the xcode project is located but then it would break if the native project structure is not the one we assume. To avoid the breaking change I decided to just keep the existing behaviour and allow changing the path with `PROJECT_ROOT`.
[ios] [added] - Allow changing the project path in react-native-xcode.sh
Pull Request resolved: https://github.com/facebook/react-native/pull/23273
Differential Revision: D13941793
Pulled By: cpojer
fbshipit-source-id: f394641b1c9d01f32bc4169097e39fc14df8191f
9ccde378b6