Gustavo Valverde
78bb334f0a
Introduce the foundational Plugin Extension Protocol — a typed, declarative mechanism for plugins to extend other plugins. - BetterAuthExtensionRegistry: empty interface augmented by host plugins via declare module (parallel to BetterAuthPluginRegistry) - extensions field on BetterAuthPlugin: typed via registry, gives compile-time checking and IDE autocomplete for extension contracts - dependencies field on BetterAuthPlugin: validated at startup, throws BetterAuthError with descriptive message if missing - getExtensions(hostId) on AuthContext: collects typed extension contributions from all plugins targeting a host - Dependency validation in runPluginInit: fail-fast before any init runs - Docs: Plugin Extension Protocol section in concepts/plugins.mdx
Better Auth
The most comprehensive authentication framework for TypeScript
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About the Project
Better Auth is framework-agnostic authentication (and authorization) library 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.