JWT Authentication with Node.js and TypeScript

Securing modern web applications requires a robust and scalable approach to user authentication. This text-based course guides you through the process of implementing JSON Web Tokens (JWT) using Node.js and TypeScript to protect your backend APIs. You will transition from understanding basic security concepts to building a fully functional, type-safe authentication system. Through clear written explanations and structured code walk-throughs, you will learn how to handle user registration, login, token generation, and secure route protection. What you'll learn: Understand the fundamentals of JWT, including headers, payloads, signatures, and token lifecycles; Set up a robust Node.js and TypeScript development environment with modern configuration; Implement secure password hashing and user registration flows; Generate and verify access tokens and implement refresh token rotation for enhanced security; Protect API routes using custom middleware and TypeScript type guards; Apply security best practices, such as storing tokens in HttpOnly cookies to prevent common vulnerabilities. The course begins with foundational authentication concepts and terminology before guiding you step-by-step through setting up your environment, writing middleware, and securing your endpoints. You will progress naturally from basic token generation to advanced security patterns. This course is designed for beginner backend developers and JavaScript programmers who want to learn secure authentication practices using TypeScript. No prior experience with JWT is required, though basic familiarity with Node.js is recommended. Start reading today to build secure and reliable APIs with modern authentication standards.