React/Next.js authoring, review, and optimization: components, routes, bundle size, re-renders, performance. Auto-activates on .tsx/.jsx files alongside mk:typescript in React projects.
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React and Next.js performance optimization — curated rules across priority categories drawn from framework docs and production practice.
Complements mk:typescript (type safety) and mk:vue (Vue patterns). This skill covers React-specific performance patterns.
Load the relevant reference when working in that area:
| Priority | Category | Reference | Key rules |
|---|---|---|---|
| CRITICAL | Eliminating waterfalls | references/async-patterns.md | Defer await, parallel promises, Suspense boundaries |
| CRITICAL | Bundle size | references/bundle-optimization.md | No barrel imports, dynamic imports, defer third-party |
| HIGH | Server performance | references/server-patterns.md | React.cache(), LRU cache, parallel fetching, after() |
| MEDIUM | Re-render optimization | references/rerender-optimization.md | Derived state, functional setState, memo, transitions |
| MEDIUM | Rendering perf | references/rendering-patterns.md | content-visibility, hoist JSX, conditional render |
Auto-activates during Phase 3 (Build) when React/Next.js project detected. Loaded by developer agent alongside mk:typescript.
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Browser automation CLI for agents: navigate, click/fill, screenshot, extract data, test apps, Electron/Slack, cloud browsers. NOT for the user's real Chrome profile/cookies (mk:chrome-profile).
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Angular v20+ patterns: components, signals, services, forms, routing, HTTP, testing, SSR. Auto-activates on .ts files in Angular projects (angular.json detected).
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