The only problem is that I also want to support WebRTC in the app. There is a React Native WebRTC implementation but as far as I can tell it requires that the app be detached from Expo to ExpoKit so that it can be included in Xcode. Unfortunately, that didn’t work as AR support didn’t seem to be included in the automatically generated project.
To include ARKit support requires that the Podfile in the project’s ios directory be modified to add AR support. The first section should look like this:
source 'https://github.com/CocoaPods/Specs.git' platform :ios, '9.0' target 'test' do pod 'ExpoKit', :git => "http://github.com/expo/expo.git", :tag => "ios/2.0.3", :subspecs => [ "Core", "CPP”, "AR" ] ...
Basically “AR” is added as an extra subspec. Then ARKit seems to work quite happily with ExpoKit.