Eliminates wasted React re-renders by measuring first then fixing — profile with the React DevTools Profiler (flamegraph + "why did this render") and why-did-you-render to find the actual offenders, then apply the right fix: stable references (hoist constants, useCallback/useMemo only where a referentially-equal prop/dep actually matters), correct list keys (stable id, never index), React.memo with a custom comparator on genuinely-hot leaf components, context splitting + selector subscriptions (useSyncExternalStore / Zustand / use-context-selector) to stop whole-tree re-renders, derive-don't-store to kill redundant state, and list virtualization (TanStack Virtual) for long lists — while knowing when NOT to memo (cheap renders, unstable deps, and the React 19 Compiler which auto-memoizes and makes most manual memo dead weight).
Install with
Claude CodeCodexCursorGitHub CopilotGemini CLI
Supported by the Atlas install prompt. Skill-specific requirements vary.
Skill stats
Skills1CategoryEngineeringStars0
About this skill
Eliminates wasted React re-renders by measuring first then fixing — profile with the React DevTools Profiler (flamegraph + "why did this render") and why-did-you-render to find the actual offenders, then apply the right fix: stable references (hoist constants, useCallback/useMemo only where a referentially-equal prop/dep actually matters), correct list keys (stable id, never index), React.memo with a custom comparator on genuinely-hot leaf components, context splitting + selector subscriptions (useSyncExternalStore / Zustand / use-context-selector) to stop whole-tree re-renders, derive-don't-store to kill redundant state, and list virtualization (TanStack Virtual) for long lists — while knowing when NOT to memo (cheap renders, unstable deps, and the React 19 Compiler which auto-memoizes and makes most manual memo dead weight).
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Eliminates wasted React re-renders by measuring first then fixing — profile with the React DevTools Profiler (flamegraph + "why did this render") and why-did-you-render to find the actual offenders, then apply the right fix: stable references (hoist constants, useCallback/useMemo only where a referentially-equal prop/dep actually matters), correct list keys (stable id, never index), React.memo with a custom comparator on genuinely-hot leaf components, context splitting + selector subscriptions (useSyncExternalStore / Zustand / use-context-selector) to stop whole-tree re-renders, derive-don't-store to kill redundant state, and list virtualization (TanStack Virtual) for long lists — while knowing when NOT to memo (cheap renders, unstable deps, and the React 19 Compiler which auto-memoizes and makes most manual memo dead weight).
About this listing
Category
Engineering
Reported license
Apache-2.0
Listing language (estimated)
English
Review status
Not individually reviewed
Agent compatibility
Atlas installation supports Claude Code, Codex, and Cursor. Skill-specific dependencies and features are checked during setup.
Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLI