Grant Express Middleware

Grant Express is an Express.js middleware that acts as a handler for the Grant OAuth Proxy, simplifying authentication and authorization flows within Node.js applications. It integrates the robust Grant core library, which provides universal OAuth support for over 200 providers including Google, GitHub, Facebook, and many others. The current stable version for `grant-express` is 5.4.8. Grant is designed to abstract away the complexities of OAuth 1.0a, 2.0, and OpenID Connect, offering a unified configuration system and flexible integration with various HTTP frameworks and serverless environments. Its key differentiators include broad provider compatibility, a declarative configuration approach, and its ability to function as an embeddable OAuth client. The package facilitates managing OAuth callbacks, tokens, and session state efficiently, though users must provide their own session store. Release cadence is tied to the underlying Grant core library, which is actively maintained with updates for new providers, OAuth specification changes, and security patches.