How to share code between react native applications while having different configuration per application

I'm new to nodejs, react native and I'm planning to create several react native applications.
These applications are going to share some code like session management, storage manager, formatters, etc...

So I want to organize my code in the following structure:

• app_1
• app_2
• app_n
• package_that_every_app_imports

My problem is that some modules in project_that_every_app_includes will have to be configured per application.

In order to do so I'm thinking that I could set a global variable that all modules even from different packages would have access to.

Is there any other way to do configuration of the package_that_every_app_imports? (except of course by passing configuration into the instances of the things that are going to be used)