Steps:

1. Create rubymotion project
2. Add motion-cocoapods
3. Create ReactNative project
4. Add ReactNative pods to rubymotion project
5. Add ReactNative screen

---

motion create App

cd App

cat >> Gemfile <<EOF
gem 'motion-cocoapods'
EOF

yarn init
yarn add @react-native-community/cli
yarn react-native init reactnative --template react-native-template-typescript

cat >> Rakefile <<EOF

Motion::Project::App.setup do |app|
  require_relative 'reactnative/node_modules/react-native/scripts/react_native_pods'
  require_relative 'reactnative/node_modules/@react-native-community/cli-platform-ios/native_modules'
  app.pods {
    use_react_native!(path: 'reactnative/node_modules/react-native')
  }
end

namespace :reactnative do
  task 'dist' do
    sh 'yarn --cwd reactnative dist'
  end
end
EOF

# add into "scripts" part to reactnative/package.json
#    "dev": "yarn react-native start",
#    "dist": "yarn dist:jsbundle",
#    "dist:jsbundle": "yarn react-native bundle --entry-file index.js --dev false --bundle-output ../resources/main.jsbundle",

### brew install moreutils jq
jq '.scripts *= {"dev": "yarn react-native start", "dist": "yarn dist:jsbundle", "dist:jsbundle": "yarn react-native bundle --entry-file index.js --dev false --bundle-output ../resources/main.jsbundle"}' package.json | sponge package.json

rake reactnative:dist

cat >> Rakefile <<EOF

namespace :sim do
  task :se do
    system("rake simulator device_name='iPhone SE (2nd generation)'")
  end

  task :eight do
    system("rake simulator device_name='iPhone 8'")
  end

  task :plus do
    system("rake simulator device_name='iPhone 8 Plus'")
  end

  task :ipad do
    system("rake simulator device_name='iPad Pro (9.7-inch)'")
  end

  task :ipadpro do
    system("rake simulator device_name='iPad Pro (12.9-inch) (4th generation)'")
  end
end
EOF

cat > app/app_delegate.rb <<EOF
class AppDelegate
  attr_accessor :window

  def application(application, didFinishLaunchingWithOptions:launchOptions)
    bridge = RCTBridge.alloc.initWithDelegate(self, launchOptions:launchOptions)
    rootView = RCTRootView.alloc.initWithBridge(bridge, moduleName:"reactnative", initialProperties:nil)

    rootView.backgroundColor = UIColor.alloc.initWithRed(1.0, green:1.0, blue:1.0, alpha:1)

    self.window = UIWindow.alloc.initWithFrame(UIScreen.mainScreen.bounds)
    rootViewController = UIViewController.new
    rootViewController.view = rootView
    self.window.rootViewController = rootViewController
    self.window.makeKeyAndVisible

    return true
  end

  def sourceURLForBridge(bridge)
    NSBundle.mainBundle.URLForResource("main", withExtension:"jsbundle")
  end
end
EOF