I'd like to use new system fonts available since iOS 13 in my React Native app. In particular, I need **rounded**, **serif** and **monospaced** ones. On the native side it is done using `UIFontDescriptor.SystemDesign` <https://developer.apple.com/videos/play/wwdc2019/227/?time=142>

On React Native side we can use `{ fontFamily: 'System' }` with `StyleSheet` but it only gives the default sans-serif design.

Is it possible to use some Swift code to modify the font descriptor of a Text component? Or should I file an issue in React Native repo with a feature request?