react-component-performance SKILL.md skillA
react-component-performance from jordancoin/ios-skills-collection is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jordancoin/ios-skills-collection/react-component-performance@git:20260330.1853d9ePins git:20260330.1853d9e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jordancoin/ios-skills-collection
- Path
skills/dimillian--react-component-performance/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260330.1853d9e, committed Mar 30, 2026
- Size
- 4,693 bytes
- Repository stars
- 6
- License
- a license file GitHub does not identify
Analyze and optimize React component performance issues (slow renders, re-render thrash, laggy lists, expensive computations). Use when asked to profile or improve a React component, reduce re-renders, or speed up UI updates in React apps.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# React Component Performance ## Overview Identify render hotspots, isolate expensive updates, and apply targeted optimizations without changing UI behavior. ## Workflow 1. Reproduce or describe the slowdown. 2. Identify what triggers re-renders (state updates, props churn, effects). 3. Isolate fast-changing state from heavy subtrees. 4. Stabilize props and handlers; memoize where it pays off. 5. Reduce expensive work (computation, DOM size, list length). 6. **Validate**: open React DevTools Profiler → record the interaction → inspect the Flamegraph for components rendering longer than ~16 ms → compare against a pre-optimization baseline recording. ## Checklist - Measure: use React DevTools Profiler or log renders; capture baseline. - Find churn: identify state updated on a timer, scroll, input, or animation. - Split: move ticking state into a child; keep heavy lists static. - Memoize: wrap leaf rows with `memo` only when props are stable. - Stabilize props: use `useCallback`/`useMemo` for handlers and derived values. - Avoid derived work in render: precompute, or compute inside memoized helpers. …
Read the whole file at its exact version.
How to install
mdr add jordancoin/ios-skills-collection/react-component-performance@sha256:4d563bd4beca0c67The line at the top of this page pins the label git:20260330.1853d9e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_kbvbbesktkbkaqx6)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Mar 30, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4693 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
jordancoin/ios-skills-collection · 6 stars · license a license file GitHub does not identify · pushed 2026-09-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_kbvbbesktkbkaqx6 GET https://markdownregistry.com/api/v1/resolve?ref=jordancoin/ios-skills-collection/react-component-performance GET https://markdownregistry.com/api/v1/blob/4d563bd4beca0c67ac85984fc5e05178532307d167c2accfdfc724d7548669de
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.