famapp/.agents/skills/react-best-practices/upstream/rules/bundle-dynamic-imports.md

title, impact, impactDescription, tags

title	impact	impactDescription	tags
Dynamic Imports for Heavy Components	CRITICAL	directly affects TTI and LCP	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):

import { MonacoEditor } from "./monaco-editor";

function CodePanel({ code }: { code: string }) {
  return <MonacoEditor value={code} />;
}

Correct (Monaco loads on demand):

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} />;
}