debug-react

Your React useEffect side effect might not fire due to stale closures or lazy updater gating issues in state-layer seams. Diagnose missing sibling side effects by tracing dispatch paths and verifying dependency arrays to ensure branches truly execute.

Debug stale closures in React useCallback hooks by checking if empty dependency arrays freeze values at mount. Trace whether callbacks reference outdated state and validate if side-effect branches actually executed to identify frozen value pitfalls.

React StrictMode double-invokes components in dev to surface missing idempotency, causing dev-only breakage. Diagnose these StrictMode-specific behavior checks to see if double-invocation is masking missing side-effect cleanup or state update logic.

The best way to trace missing React reducer dispatches is to investigate state-machine seams in reducer or useState updater logic. Validate whether gated side-effect branches truly executed and check context/store dispatch paths for silent gaps.

Fix unmount race conditions interfering with focus changes by verifying focus and DOM cleanup interactions. Detect unmount cleanup logic that interrupts intended focus updates and ensure side-effect branches complete before component teardown.

Yes, this approach works for useReducer state flows by diagnosing missing sibling side effects within dispatch paths. It validates lazy updater gating, detects stale closures across hook-managed logic, and ensures side-effect branches truly executed.