Lesson 6: When Things Go Wrong
Learn how to implement JWT authentication, permission-based authorization, Helmet security headers, and comprehensive error management for both backend and frontend.
Web 3 course: TypeScript, Express, React, and other modern web technologies
Course materials, exercises, and other useful information for the 2025-2026 academic year.
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View all posts »Lesson 5 – GraphQL
Learn how to set up GraphQL in your fullstack app, write queries and mutations, and compare GraphQL with REST through practical exercises.
Lesson 4 – Advanced State Management
Introduce multi-user support and money transfers to the app, using a robust Express TypeScript backend with Prisma and advanced state handling in React Router.
Lesson 3 – Navigation and style
Going from a technical proof of concept to an application a user may want to use.
Lesson 2 – Deploy and persistence
Refresh React and Express knowledge while building the foundation for a collaborative expense-sharing app with TypeScript, Vite, and modular backend architecture.
Lesson 1 – JS2 Recap & Project Kickoff
Refresh React and Express knowledge while building the foundation for a collaborative expense-sharing app with TypeScript, Vite, and modular backend architecture.