Discipline React state, derived data, effects, refs, reducers, context, and event handlers. Use when components have duplicated state, unnecessary useEffect, prop-to-state syncing, stale closures, event logic in effects, external subscriptions, DOM integration, network sync, or complex UI state.
Discipline React state, derived data, effects, refs, reducers, context, and event handlers. Use when components have duplicated state, unnecessary useEffect, prop-to-state syncing, stale closures, event logic in effects, external subscriptions, DOM integration, network sync, or complex UI state.