Follow the steps here to start writing an app in less than a minute!
- haxelib install react-next
- haxelib install react-native
Follow the steps here
Main.hx
package;
import react.ReactComponent;
import react.ReactMacro.jsx;
import react.native.api.*;
import react.native.component.*;
class Main
{
    public static function main()
    {
        var projectName = 'AwesomeProject';
        AppRegistry.registerComponent(projectName, function() return App);
    }
}
class App extends ReactComponent
{
    override function render()
    {
        return jsx('
            <View>
                <Text>
                    Test
                </Text>
            </View>
        ');
    }
}build.hxml
-lib react-native
-cp src
-main Main
-js index.ios.js
Then the generated index.ios.js can be used in the usual react-native workflow