Summary
A well-organized collection of 70+ React and Next.js performance rules pulled from Vercel's engineering best practices, sorted into eight priority tiers from waterfalls to advanced patterns. You'd reach for this when reviewing code, auditing Core Web Vitals regressions, or tracking down why your server components are slow. The waterfall elimination section alone (parallel Promise.all, deferred awaits, Suspense boundaries) will catch most of the low-hanging fruit in typical Next.js apps. The bundle size guidance on direct imports versus barrel files is correct and commonly ignored. It's dense enough that you'll want to activate it during refactoring sessions rather than keeping it loaded all the time, but the priority index makes it easy to focus on what actually matters for your bottleneck.
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npx -y skills add affaan-m/ecc --skill react-performance --agent claude-codeInstalls into .claude/skills of the current project.
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Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Give your AI agent a complete email layer—sending, inbound inboxes, and sandbox testing.
Get 4K emails/month free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
