NPM package overhead?

help
1

I am planning to move some functions e.g. formatters, helpers, etc. I am using in some of my apps to an NPM package, for better usability and maintainability.

I am wandering how much “overhead” I am adding to the project by adding an extra package. i.e. How much the project size will increase -after build- just because there is an extra package and not because of the “functions” it self?

2

Why do you think there’d be overhead? It should be about the same bundle size you end up with.

3

Just wandering. Surely it adds some more code e.g. package.json, etc. I don’t know if this code is finally bundled in to the after during build