Hi, to make easier configure nodejs installations across multiple node and setup them to an internal nodejs.org repository would be great add support to the npm config file.
The npm config file is an ini file but with only one single section.
https://docs.npmjs.com/files/npmrc

This config file will take advantage of credential support to configure authentication in case of internal npm repository.

That I know, npm does not have an option where you could specify in the CLI the npmrc file, but
there are four relevant places where this file is lookup. It's also possible transform each settings into enviroment variable or in a CLI option.

https://docs.npmjs.com/misc/config