Overview
A complete authentication system that shows a type-safe full-stack setup: a NestJS API paired with a React + Redux Toolkit client.
The problem
Authentication is deceptively hard to get right across the full stack — sessions, validation & state all have to stay consistent.
The approach
A NestJS backend and a strongly-typed React/Redux frontend that share clear contracts for a smooth, secure auth flow.
Key features
- Sign up, sign in & protected routes
- Type-safe API contracts
- Centralized auth state with Redux Toolkit
Challenges
- • Keeping client auth state in sync with server sessions.
Lessons learned
- • A single source of truth for auth state simplifies everything.