dcaaef1011
Format: YYYY-MM-DD-description.md - 2026-01-19-infrastructure-deployment.md - 2026-01-19-backend-api-implementation.md (in progress) Co-Authored-By: Claude Sonnet 4.5 (1M context) <noreply@anthropic.com>
36 lines
791 B
Markdown
36 lines
791 B
Markdown
---
|
|
title: Dynamic Imports for Heavy Components
|
|
impact: CRITICAL
|
|
impactDescription: directly affects TTI and LCP
|
|
tags: bundle, dynamic-import, code-splitting, next-dynamic
|
|
---
|
|
|
|
## Dynamic Imports for Heavy Components
|
|
|
|
Use `next/dynamic` to lazy-load large components not needed on initial render.
|
|
|
|
**Incorrect (Monaco bundles with main chunk ~300KB):**
|
|
|
|
```tsx
|
|
import { MonacoEditor } from './monaco-editor'
|
|
|
|
function CodePanel({ code }: { code: string }) {
|
|
return <MonacoEditor value={code} />
|
|
}
|
|
```
|
|
|
|
**Correct (Monaco loads on demand):**
|
|
|
|
```tsx
|
|
import dynamic from 'next/dynamic'
|
|
|
|
const MonacoEditor = dynamic(
|
|
() => import('./monaco-editor').then(m => m.MonacoEditor),
|
|
{ ssr: false }
|
|
)
|
|
|
|
function CodePanel({ code }: { code: string }) {
|
|
return <MonacoEditor value={code} />
|
|
}
|
|
```
|