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- Added new skills: find-skills, frontend-ui-engineering, and vercel-react-best-practices to skills-lock.json. - Updated use-pixel-heat.ts to import both animate and AnimationPlaybackControls from motion for improved animation handling.
36 lines
791 B
Markdown
36 lines
791 B
Markdown
---
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title: Dynamic Imports for Heavy Components
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impact: CRITICAL
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impactDescription: directly affects TTI and LCP
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tags: bundle, dynamic-import, code-splitting, next-dynamic
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---
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## Dynamic Imports for Heavy Components
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Use `next/dynamic` to lazy-load large components not needed on initial render.
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**Incorrect (Monaco bundles with main chunk ~300KB):**
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```tsx
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import { MonacoEditor } from './monaco-editor'
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function CodePanel({ code }: { code: string }) {
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return <MonacoEditor value={code} />
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}
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```
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**Correct (Monaco loads on demand):**
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```tsx
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import dynamic from 'next/dynamic'
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const MonacoEditor = dynamic(
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() => import('./monaco-editor').then(m => m.MonacoEditor),
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{ ssr: false }
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)
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function CodePanel({ code }: { code: string }) {
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return <MonacoEditor value={code} />
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}
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```
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