2fa-nodejs

This article will teach you how to secure a Node.js API by implementing two-factor authentication (2FA) system using tokens generated by Google Authenticator or Authy. The one-time passcode (OTP) can be delivered via different methods like SMS but we will use Google Authenticator or Authy to reduce the complexity of the project. Maintained by wpcodevo on GitHub, where it has earned 82 stars from the community.

It's actively developed around 2fa, express, expressjs, and is a solid reference for anyone building with these tools.