I created my first react native app using the following command.
react-native init PropertyFinder
This created a project for ios in
I looked into it and the functionality is not supported by react-native.
What react-native init is doing is taking a template and changing some properties in it.
The template is written in Objective-C so there is nothing you can do beside modifying the result manually.
However, that shouldn't really concern you. You can use Swift even in Objective-C projects. No need to rewrite the files to Swift.