React Hooks Auditor Pro

The free version finds the bug. The Pro version fixes it, profiles the re-renders, and tells you what React 19 breaks.

Free vs Pro

The free auditor produces the severity-ranked findings report. Pro closes the loop: git-apply-ready auto-fix patches, a re-render profiler with impact estimates, custom-hooks validation for your team's library, a React 19 migration map (forwardRef, findDOMNode, use() patterns), and Zustand/Redux/Jotai store-level audits. Free tells you what's broken — Pro fixes it and checks whether your state management is manufacturing the same bugs.

Upgrade Path

Run the free audit first; if it finds more than five issues or you're migrating to React 19, Pro's auto-fix and migration map turn a weekend of manual patching into an afternoon.

The Problem

The free React Hooks Auditor hands you a severity-ranked audit with the exact fix — but you still apply each fix by hand, run the profiler yourself, and wonder whether your state management library is fighting the hooks you just cleaned up. If you're managing a team of 5+ React developers, the audit report is the starting point, not the end state. You need automated remediation, a performance baseline, and coverage for the hooks ecosystem beyond React's built-in 15.

What You Get

• Automated dependency analysis with auto-fix — scans every useEffect, useCallback, and useMemo dependency array, detects missing or stale deps, and generates patches you can apply with git apply.
• Performance profiler — flags unnecessary re-renders by tracing component render frequency, identifies useMemo/useCallback applied to primitives (pure overhead), and quantifies context-value invalidation cascading to consumers.
• Custom hooks validator — audits your team's custom hooks (useDebounce, usePagination, useWebSocket) for stale closures, missing cleanups, and incorrect return values.
• React 19 migration guide — maps every breaking change in React 19 (use(), useActionState, useOptimistic, ref-as-prop) to your codebase, with specific migration instructions per hook pattern.
• State management hook audit — covers Redux (useSelector/useDispatch), Zustand, Jotai, and React Query (useQuery/useMutation) for hooks anti-patterns that generic auditors miss.
• Accessibility hook audit — checks useAnnounce, useFocusWithin, and focus-management patterns for screen reader compatibility.
• Test coverage integration — generates a hooks testing checklist and identifies which hooks have no test coverage, with example test patterns for @testing-library/react-hooks.
• Full audit report — REACT_HOOKS_AUDIT_PRO.md with categorized findings (Critical / High / Medium / Low), code patches, performance metrics, and migration action items.

Why This Beats Prompting It Yourself

The free audit tells you "status is a stale closure." The Pro audit tells you that, generates the patch, profiles the re-render impact, checks whether your Zustand store is creating the same closure pattern in three other components, and flags that React 19 will break the forwardRef wrapper around the component that uses it. One tool, one pass, complete coverage across hooks, state management, and the React 19 migration path.

Example Session

You: "Full hooks audit on src/features/orders/ — we're migrating to React 19 next sprint and using Zustand for state."

Agent: Scanned 14 files, 38 hook call sites, 4 Zustand stores. Writing REACT_HOOKS_AUDIT_PRO.md.

AUDIT SUMMARY — src/features/orders/
Files: 14  |  Hook call sites: 38  |  Custom hooks: 6  |  Zustand stores: 4
Findings: 2 Critical · 3 High · 8 Medium · 4 Low

=== AUTO-FIX (git apply ready) ===
Patch generated: react-hooks-fix.patch (342 lines, 8 hunks)
  - Fix stale closure in useOrderQuery (add `status` to deps)
  - Fix cleanup leak in useWebSocket (add AbortController)
  - Fix useMemo-on-primitive in OrderTable (3 instances)
  - Fix context value recreation in OrdersProvider

=== REACT 19 MIGRATION ===
  ⚠ OrderTable.tsx:12 — uses forwardRef + useContext combo.
     React 19: ref is now a regular prop. forwardRef removed.
     Action: Remove forwardRef wrapper, accept ref as prop.
  ⚠ useOrderQuery.ts:67 — uses findDOMNode pattern in error boundary.
     React 19: findDOMNode removed entirely.
     Action: Switch to ref-based error boundary.

=== ZUSTAND HOOK AUDIT ===
  useOrderStore.ts:15 — Zustand selector returns new object every render
     const { rows, filters } = useOrderStore()
     → 41 consumers re-render on any store change
     Fix: useShallow() from zustand/react/shallow

=== PERFORMANCE ===
  Estimated unnecessary re-renders eliminated by auto-fix: ~180/1000 renders (18%)
  Context cascade: OrdersProvider invalidates 41 consumers (fix: useMemo on value)

Use Cases

• Pre-migration audit before upgrading from React 17/18 to React 19 — catch every breaking hook pattern in one pass.
• Onboarding review on a large React codebase — get a ranked list of every hooks anti-pattern across components and state management.
• CI integration — run the audit as a pre-commit or PR check to prevent new hooks violations from entering the codebase.
• Performance sprint — profile and fix unnecessary re-renders across a component library with 50+ hooks call sites.
• State management evaluation — audit whether your Zustand/Redux/Jotai setup is creating hooks anti-patterns at the store level.

Known Limitations

This is a static code audit — it does not execute your app or collect runtime render timings. The auto-fix patches are generated from static analysis and should be reviewed before applying. React 19 migration suggestions are based on the published breaking changes; some edge cases may require manual verification. The state management audit covers Redux, Zustand, Jotai, and React Query — other libraries (Recoil, MobX) are not yet covered.