Remix Auth

remix-auth is a TypeScript-first, strategy-based authentication library designed for Remix and React Router applications. Inspired by Passport.js, it provides full server-side authentication capabilities built on the Web Fetch API, ensuring compatibility with modern web standards. The library is currently stable at version 4.2.0 and maintains an active release cadence, frequently introducing new features, bug fixes, and documentation improvements. Key differentiators include its robust TypeScript support, extensible strategy pattern (with separate npm packages for various authentication flows like Form, OAuth2, etc.), and seamless integration with Remix's server-side action and loader functions, allowing developers to implement custom authentication logic. It dropped direct React Router requirements in v4.0.0, simplifying its core and making it more adaptable.