How to add new browser extension target to existing react-native iOS app?

I have existing React-Native iOS app. I need to create Safari browser extension for iOS and MacOS Safari browser. For extension, I have React.js project for other browser extension. Now I have tried to convert it into Safari extension and It is working fine. But what if I have to add Extension target to existing React-Native iOS app? Which steps I need to follow to add target to iOS app? Can you please guide me on this? Thank you in advance.

How to add new browser extension target to existing react-native iOS app?
 
 
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