He introduced a . Plain TypeScript classes: CartService , UserSession , AnalyticsTracker . These had zero React imports. They were tested with Jest in 12ms. They could run on a server, a worker, or a toaster.
He picked up the ugliest component in the codebase: ProductCard.tsx . It did seven things. alan alickovic react application architecture for production
The junior developer, Sarah, asked, "Where does the socket disconnect logic go?" He introduced a
The pager went off at 3:14 AM. Again.
Alan grabbed a whiteboard marker.
The team had been using Context for everything. One giant AppProvider that held user data, UI theme, WebSocket messages, and a forgotten boolean for whether the footer animation had played. alan alickovic react application architecture for production
"When React re-renders, these services don't care. They are immutable islands of truth."