Can I use components of a web app with a React Native app

I am trying to build an app in react native. The app was originally built in unity, but due to performance reasons. It was decided the app should be rebuilt in react native. The app currently has a web app also and I am wondering if there is a way when that the react native app can use some components from the web app.

I tried to google this problem, but I only find articles about using components between react native and react native web. I do not know what the web app was built with, but I am almost certain that it was not react native web.