npm-owner(1) -- Manage package owners
npm owner ls <pkg> npm owner add <user> <pkg> npm owner rm <user> <pkg>
- ls: List all the users who have access to modify a package and push new versions. Handy when you need to know who to bug for help.
- add: Add a new user as a maintainer of a package. This user is enabled to modify metadata, publish new versions, and add other owners.
- rm: Remove a user from the package owner list. This immediately revokes their privileges.
Note that there is only one level of access. Either you can modify a package, or you can't. Future versions may contain more fine-grained access levels, but that is not implemented at this time.