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ku5icku5ic/claude-kit/skills/react-patterns/SKILL.md

react-patterns

Skill2 starsChanged 8 days agoMITView on GitHub

React core patterns for hooks rules, component design, rendering performance, anti-patterns, and review checklist, independent of any meta-framework. Use whenever the project contains `.jsx`/`.tsx` files or `react` in `package.json`, OR the user asks about React, its hooks, component structure, or rendering and hydration behavior, even if React is not mentioned by name.

38 other projects use a version of this.

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Projects with it also use typescript-strict, docker-expert and 8 more.

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The file

We split this skill into the rules it gives an agent

1 rule. 0 are common, 1 is distinctive, and 0 are very specific to this project.

  • 0

    Common

    Most of the 34 edited versions we read keep these.

  • 1

    Distinctive

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Default assumption: React 19 with the modern (concurrent) renderer.

    line 8

“Common” is measured: kept by at least 6 in 10 of the 34 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

React patterns

Default assumption: React 19 with the modern (concurrent) renderer.

  • Most rules apply unchanged to React 18; deltas (use, useActionState, useFormStatus, useOptimistic, Actions) are called out where they matter.
  • Server Components are a feature of frameworks built on React; framework-specific patterns load when those framework signals are present in the project.
  • Adapt advice to the version in the project's package.json or lockfile.

Reference files

FileCovers
reference/correctness.mdRules of Hooks, dependency arrays, key stability, effect cleanup, render pitfalls
reference/performance.mdMemoization costs, React.memo, virtualization, lazy init, context, React Compiler
reference/structure.mdControlled vs uncontrolled, derived state, prop drilling, effects vs handlers
reference/anti-patterns.mdSeven review-time anti-patterns with severity calls
reference/when-to-split.mdHeuristics for component splitting and what does not justify a split

References

Version notes

Checked: 2026-09-26 against https://react.dev/blog and Context7 /react/react

  • 19.3 (2026-09-09): patch-level; no guidance change.
  • 19.0 (2024-12-05): Actions, use, useActionState, useFormStatus, useOptimistic. Verify against the per-hook page on react.dev, not older blog posts.
  • React Compiler: stable, opt-in, installed per build tool; not present in every project.

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