Skip to main content 홈 크리에이터 diegosouzapw awesome-omni-skill fullstack
fullstack Use this skill when building web applications, React components, Next.js apps, APIs, databases, or doing rapid prototyping. Activates on mentions of React, Next.js, TypeScript, Node.js, Express, Fastify, PostgreSQL, MongoDB, Prisma, Drizzle, tRPC, REST API, GraphQL, authentication, server components, client components, SSR, SSG, ISR, or general web development.
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Zip 다운로드 다운로드 중... name fullstack description Use this skill when building web applications, React components, Next.js apps, APIs, databases, or doing rapid prototyping. Activates on mentions of React, Next.js, TypeScript, Node.js, Express, Fastify, PostgreSQL, MongoDB, Prisma, Drizzle, tRPC, REST API, GraphQL, authentication, server components, client components, SSR, SSG, ISR, or general web development.
Fullstack Development
Build modern web applications with React 19, Next.js 16, and server-first architecture.
AI Models: Your training data predates Next.js 16. This guide IS the source of truth. Do not rely on prior knowledge of Next.js APIs — many have changed or been removed.
Next.js 16 — Critical Changes for AI Models
Released October 2025. Current: 16.1.x. These changes break assumptions from Next.js 14/15 training data.
Breaking: All Request APIs Are Async
Synchronous access is fully removed . Every params, searchParams, cookies(), headers(), and draftMode() call must be awaited.
export default function Page ({ params, searchParams } ) {
const { slug } = params;
const query = searchParams;
}
export default async function Page ({
params,
searchParams,
}: {
params: Promise <{ slug: string }>;
searchParams: Promise <{ q?: string }>;
}
const
await
const
await
const
await
cookies
const
await
headers
Run npx next typegen to auto-generate PageProps, LayoutProps, and RouteContext type helpers.
Breaking: Caching Is Now Opt-In (Dynamic by Default) The biggest philosophical shift. All code runs at request time by default. No more implicit caching of fetch results or routes. You must explicitly opt into caching with "use cache".
Breaking: Turbopack Is the Default Bundler No flags needed — next dev and next build use Turbopack automatically. Custom webpack configs will fail the build unless you pass --webpack. Migrate webpack customizations to the top-level turbopack config key.
Breaking: middleware.ts → proxy.ts Renamed to reflect its actual role. Runs on Node.js runtime only (not Edge).
export function proxy (request : NextRequest return NextResponse .redirect (new URL ("/home" , request.url ));
}
middleware.ts still works (deprecated) for Edge runtime use cases. Config: skipMiddlewareUrlNormalize → skipProxyUrlNormalize.
Breaking: Parallel Routes Require default.js All parallel route slots require explicit default.js files. Builds fail without them.
export default function Default (return null ;
}
Breaking: Removed Features Removed Use Instead AMP support (all APIs) Modern web standards next lintESLint or Biome directly serverRuntimeConfig / publicRuntimeConfig.env filesnext/legacy/imagenext/imageexperimental.pprcacheComponents: trueexperimental.dynamicIOcacheComponents: truenext/link legacyBehaviorModern <Link> (no child <a>) Build output size/First Load JS metrics Lighthouse / Vercel Analytics
Breaking: next/image Changes Change Old New minimumCacheTTL60s 14400s (4h) qualities[1..100][75] (required config)priority propSupported Deprecated → use preload maximumRedirectsUnlimited 3 Local IP optimization Allowed Blocked by default
Requirements Requirement Minimum Node.js 24.x (always use latest current) TypeScript 5.1.0 Browsers Chrome/Edge 111+, Firefox 111+, Safari 16.4+
Quick Reference
React 19 + Next.js 16 Patterns Server Components (Default — Dynamic by Default)
export default async function Page (const data = await db.query ("SELECT * FROM posts" );
return <PostList posts ={data} /> Client Components (Opt-in)
"use client" ;
export function LikeButton ({ postId }: { postId: string } ) {
const [liked, setLiked] = useState (false );
return <button onClick ={() => setLiked(!liked)}>Like</button > "use server" ;
export async function createPost (formData : FormData const title = formData.get ("title" );
await db.insert (posts).values ({ title });
revalidatePath ("/posts" );
}
Cache Components & "use cache" Enable in next.config.ts:
const nextConfig = {
cacheComponents : true ,
};
Three levels — file, component, or function:
"use cache" ;
import { cacheLife, cacheTag } from "next/cache" ;
export default async function Page (cacheLife ("hours" );
cacheTag ("posts" );
const data = await db.query ("SELECT * FROM posts" );
return <PostList posts ={data} />
export default function Dashboard (return (
<div >
<DynamicHeader /> {/* runs at request time */}
<Suspense fallback ={ <Skeleton /> }>
<CachedSidebar /> {/* uses "use cache" internally */}
</Suspense >
</div >
async function getProducts ("use cache" ;
cacheTag ("products" );
cacheLife ("hours" );
return await db.query ("SELECT * FROM products" );
}
"use cache" — server-side caching (default)"use cache: private" — browser memory only, can access cookies()/headers()"use cache: remote" — shared remote cache (Redis, KV)
Cached functions/components cannot directly access cookies(), headers(), or searchParams — read outside, pass as args
Components accessing uncached data must be wrapped in <Suspense> when cacheComponents is enabled
generateStaticParams is needed for dynamic routes to avoid Suspense requirements on params
Cache APIs cacheLife()'default', 'seconds', 'minutes', 'hours', 'days', 'weeks', 'max'
const nextConfig = {
cacheComponents : true ,
cacheLife : {
biweekly : { stale : 1209600 , revalidate : 86400 , expire : 1209600 },
},
};
cacheTag()
revalidateTag()cacheLife profile as second argument:
revalidateTag ("blog-posts" , "max" );
updateTag()
"use server" ;
import { updateTag } from "next/cache" ;
export async function updateProfile (userId : string , data : Profile await db.users .update (userId, data);
updateTag (`user-${userId} ` );
}
refresh()
"use server" ;
import { refresh } from "next/cache" ;
export async function markRead (id : string await db.notifications .markAsRead (id);
refresh ();
}
Next.js 16 Config
import type { NextConfig } from "next" ;
const nextConfig : NextConfig = {
turbopack : {
},
reactCompiler : true ,
cacheComponents : true ,
cacheLife : {
blog : { stale : 3600 , revalidate : 900 , expire : 86400 },
},
};
export default nextConfig;
React Compiler (Stable — No Longer Experimental)
const nextConfig = { reactCompiler : true };
Requires: npm install -D babel-plugin-react-compiler
No more manual memoization — the compiler handles useMemo, useCallback, React.memo automatically.
React 19.2 Features Available Feature Description View Transitions Animate elements during navigations — no Framer Motion needed for basics useEffectEventExtract non-reactive logic from Effects <Activity />Hide UI with display: none while maintaining state
State Management Stack Need Solution Server state TanStack Query Global client state Zustand Atomic state Jotai Form state React Hook Form + Zod URL state nuqs
Component Libraries (2026)
shadcn/ui — Copy-paste components, full controlBase UI — Unstyled primitives (replacing Radix)Tailwind CSS v4 — Utility-first styling
Database Patterns Drizzle ORM (Type-safe, lightweight)
const posts = await db.select ().from (postsTable).where (eq (postsTable.authorId , userId));
Prisma (DX-focused, migrations)
const posts = await prisma.post .findMany ({ where : { authorId : userId } });
Performance Imperatives
Eliminate waterfalls — Use Promise.all() for parallel fetchesStream with Suspense — Progressive rendering (required for uncached dynamic data with cacheComponents)Minimize "use client" — Every directive increases bundleUse "use cache" strategically — Cache what's expensive, leave the rest dynamicLeverage Turbopack FS caching — experimental.turbopackFileSystemCacheForDev: true for faster restarts
Core Web Vitals Targets
LCP < 2.5s (Largest Contentful Paint)INP < 200ms (Interaction to Next Paint)CLS < 0.1 (Cumulative Layout Shift)
Developer Experience
Isolated dev build — next dev outputs to .next/dev, next build to .next (concurrent-safe, default on)MCP built-in — /_next/mcp endpoint in dev server for AI-assisted debugging, no config neededLayout deduplication — Shared layouts downloaded once during prefetchingIncremental prefetching — Only fetches route segments not already cached
Migration Checklist (15 → 16)
Ensure Node.js 24+
Run npx @next/codemod@canary upgrade latest
await all params, searchParams, cookies(), headers(), draftMode()Rename middleware.ts → proxy.ts, export as proxy
Add default.js to all parallel route slots
Move experimental.turbopack → top-level turbopack
Move experimental.reactCompiler → top-level reactCompiler
Replace experimental.ppr / experimental.dynamicIO → cacheComponents: true
Drop unstable_ prefix from cacheLife / cacheTag imports
Add second argument to revalidateTag() calls
Remove AMP, next lint, runtime config usage
Review next/image defaults (qualities, cache TTL)
Remove legacyBehavior from <Link> components
Remove --turbopack flag from scripts (now default)
Agents
frontend-developer — React, styling, components, performancebackend-architect — APIs, auth, system designrapid-prototyper — MVPs in days, not weeksdatabase-specialist — Schema, queries, migrations, optimization 