next's #9069 rewrote generic-oauth to flow through the core social provider and callback. The #9799 accessTokenExpiresIn source fix merged in cleanly (its config field and the applyDefaultAccessTokenExpiry wiring land on the three token paths); main's regression tests still targeted the old signIn.oauth2 plugin API. This ports them onto signIn.social so they keep guarding the behavior: - #9799: getAccessToken refreshes once the accessTokenExpiresIn window passes when the provider omits expires_in, does not refresh when it is unset, and applies it to a custom getToken result. - #9792: the verify-email link preserves the encoded callbackURL. - #9702: a session hook throwing an APIError redirects to the cross-origin errorCallbackURL with the hook's code (proves the rewritten callback's hook-error forwarding). - #9578: implicit-link tests mark the local user verified so linking is allowed under the default-on requireLocalEmailVerified gate. A stale IDP-bounce assertion is updated to next's state-error vocabulary. All 71 tests pass. (cherry picked from commit 52adab0db3f463295a0c4e3152d770f4ce40b2d2)
Better Auth
Better Auth is a framework-agnostic authentication (and authorization) framework for TypeScript. It provides a comprehensive set of features out of the box and includes a plugin ecosystem that simplifies adding advanced functionalities with minimal code in a short amount of time. Whether you need 2FA, multi-tenant support, or other complex features, it lets you focus on building your actual application instead of reinventing the wheel.
Why Better Auth
Authentication in the TypeScript ecosystem is a half-solved problem. Other open-source libraries often require a lot of additional code for anything beyond basic authentication. Rather than just pushing third-party services as the solution, I believe we can do better as a community—hence, Better Auth.
Contribution
Better Auth is a free and open source project licensed under the MIT License. You are free to do whatever you want with it.
You could help continuing its development by:
Security
If you discover a security vulnerability within Better Auth, please send an e-mail to security@better-auth.com.
All reports will be promptly addressed, and you'll be credited accordingly.
