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auditing-performance

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Audit and optimize application performance, including bundle size, rendering, database queries, and Core Web Vitals.

resources/auditing-performance/SKILL.md

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# Performance Audit

Use this skill when the user asks to optimize performance, reduce load times, fix slow pages, or audit Core Web Vitals.

## Steps

1. **Analyze bundle size**
   - Run `npx @next/bundle-analyzer` (Next.js) or `npx vite-bundle-visualizer` (Vite) to identify large dependencies.
   - Look for large libraries that could be replaced with lighter alternatives (e.g. `moment` → `date-fns`, `lodash` → individual imports or native methods).
   - Check for duplicated dependencies in the bundle.
   - Verify tree-shaking is working (no barrel file re-exports pulling in unused code).

2. **Audit rendering performance**
   - Identify components that re-render unnecessarily — look for inline object/array/function creation in JSX props.
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