global configuration file (defaults to $PREFIX/etc/npmrc ; configurable via CLI option –globalconfig or environment variable $NPM_CONFIG_GLOBALCONFIG ) npm’s built-in configuration file ( /path/to/npm/npmrc )

Where is the .npmrc file located?

It is inside the home folder of the user. Different . npmrc exists for sudo user (for root inside /root) and your user (inside /home/username).

How do I find npm config file?

How to check your configuration is working. Run the npm config list command to see what variables are set. If you run this in a project folder with an . npmrc file you should see its overriding configuration settings in the folder, and the system global settings after that.