openid-client

openid-client is a certified OpenID Connect (OIDC) and OAuth 2.0 client library for JavaScript runtimes (Node.js, browsers, Deno, Bun) that handles the full authentication and authorization flow, including token management, session handling, and provider discovery. It is designed for developers building secure applications that need to integrate with any OIDC-compliant identity provider, such as Google, Microsoft, or Auth0. Its interest lies in being the most comprehensive and spec-compliant OIDC client for JavaScript, offering robust security features and support for advanced flows like FAPI and CIBA.