Next.js Patterns
App Router
We use the Next.js 15 App Router located in app/.
Pages
- •Location:
app/[route]/page.tsx - •Component: Default export function.
- •Client vs Server: Use
"use client"directive at the top for components requiring state (useState,useEffect) or browser APIs. otherwise default to Server Components.
Layouts
- •Location:
app/layout.tsx(Root),app/[route]/layout.tsx(Nested). - •Purpose: Wrappers for pages, holding navigation, fonts, and metadata.
Navigation
- •Use
Linkfromnext/linkfor internal navigation. - •Use
useRouterfromnext/navigationfor programmatic navigation (inside Client Components).
tsx
import Link from "next/link";
import { useRouter } from "next/navigation";
// Link
<Link href="/dashboard">Dashboard</Link>
// Router
const router = useRouter();
router.push('/login');
Data Fetching
- •Server Components: Fetch directly using
await fetch()or DB calls. - •Client Components: Use
useEffector SWR/TanStack Query (if added later). Currently using standardfetchinuseEffect.
Font Optimization
- •We use
next/font/google(e.g., Poppins) inapp/layout.tsx. - •Variable fonts are passed to
bodyclassName.
Metadata
- •Define
export const metadata: Metadata = { ... }inpage.tsxorlayout.tsxfor SEO.