Create or verify a user named <username> in the specified registry, and
save the credentials to the .npmrc file. If no registry is specified,
the default registry will be used (see npm help 7 npm-config).
The username, password, and email are read in from prompts.
To reset your password, go to https://www.npmjs.com/forgot
To change your email address, go to https://www.npmjs.com/email-edit
You may use this command multiple times with the same user account to
authorize on a new machine. When authenticating on a new machine,
the username, password and email address must all match with
your existing record.
npm login is an alias to adduser and behaves exactly the same way.
If specified, the user and login credentials given will be associated
with the specified scope. See npm help 7 npm-scope. You can use both at the same time,
npm adduser --registry=http://myregistry.example.com --scope=@myco
This will set a registry for the given scope and login or create a user for
that registry at the same time.
If specified, save configuration indicating that all requests to the given
registry should include authorization information. Useful for private
registries. Can be used with --registry and / or --scope, e.g.
npm adduser --registry=http://private-registry.example.com --always-auth
This will ensure that all requests to that registry (including for tarballs)
include an authorization header. See always-auth in npm help 7 npm-config for more
details on always-auth. Registry-specific configuration of always-auth takes
precedence over any global configuration.