When prompted, provide your username, password, and email address.
user@host:~$ npm login
npm notice Log in on https://registry.npmjs.org/
Username: mona
Password:
Email: (this IS public) mona@github.com
npm notice Open https://www.npmjs.com/login/913c3ab1-89a0-44bd-be8d-d946e2e906f0 to use your security key for authentication or enter OTP from your authenticator app