two project that needs the same library

so I have this project that I decided to create an external controls library for, until now I've been creating controls inside the main project but its getting cramped up in that project, and a library could be useful for future projects, but I still need bootstrap in the main project.

the thing is I am mainly using ng-bootstrap for the controls, if I do separate the controls into a controls library is there a way to provide ng-bootstrap to the controls library, from the main project, and if so, how can I do that ?

if not what is the best practice for this ?

and is installing ng-bootstrap in both project a good idea ? It doesn't feel right to do so.