How to Build a React App from Scratch That Doesn't Fall Apart in 6 Months - Scalable, Performant, Secure, and Testable

The guide prescribes a battle-tested React + TypeScript + Vite stack and developer tools for long-term maintainability.

It shows a feature-based project structure and says to set up routing, config, and environment handling on day one.

State should be matched to the right tool: useState, Context, TanStack Query, or Zustand as appropriate.

Performance, responsiveness, and security are treated as design-first concerns with recommendations like code-splitting and virtualized lists.