Primitive Components
Primitive components also known as core components
Core components are the components that are built into react-native and map to
native components in iOS and android but you should keep in mind that the
deeper the hierarchy of components the slower your UI will be. The main concept to
wrap your head around is that even though the react-native components map directly
to native components the communication between the two sides happens through a bridge
that is the bottle neck in performance. This is why react-native applications are less
performant than true native applications.
The bottleneck in the bridge makes it challenging to have well performing apps in every
single instance and that is why in cases when you want to build highly performing components
you will most likely want to implement the hot paths in native land. The community has provided
quite a few of the patterns that are performance sensitive in a directory of react-native
components. This is where you want to have a look when you stumble
on a performance issue in your app to see if anyone has created a solution that solves your problem.
You will most likely use some of the native libraries in the directory without even giving it much thought ie:
react-native-navigationformik
This is not the only case when you want to use native components, but also when you need to access the lower level mobile OS APIs for performing specific operations ie:
react-native-keychainreact-native-shareexpo-notifications