Creating a modal picker component from scratch in React Native

Since there's no picker component out of the box from React Native and no libraries that suited my needs, I decided to create a picker component from scratch for iOS specifically (also works on Android of course). To improve the user experience, I'd add a few additions to the android side since the picker component works a little different for that platform. Gist to help understand how it's used in a component: https://gist.github.com/jonasgroendahl/6f81b440edfe159932f2bcef2f06fbd5