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next-js-16-launchpad
Next.js 16 with Turbopack, Cache Components, and proxy.ts. Use for bootstrapping, migrating, and building with App Router and React 19.
231 stars
Installation
Claude Code / Cursor / Codex
$curl -o ~/.claude/skills/next-js-16-launchpad/SKILL.md --create-dirs "https://raw.githubusercontent.com/aiskillstore/marketplace/main/skills/calel33/next-js-16-launchpad/SKILL.md"
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/next-js-16-launchpad/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How next-js-16-launchpad Compares
| Feature / Agent | next-js-16-launchpad | Standard Approach |
|---|---|---|
| Platform Support | multi | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Next.js 16 with Turbopack, Cache Components, and proxy.ts. Use for bootstrapping, migrating, and building with App Router and React 19.
Which AI agents support this skill?
This skill is compatible with multi.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# Next.js 16 Launchpad
Next.js 16: Turbopack default (2-5× faster builds), Cache Components (`'use cache'`), and `proxy.ts` for explicit control.
## When to Use
✅ Next.js 16, Turbopack, Cache Components, proxy migration, App Router, React 19.2
❌ Pages Router, Next.js ≤15, generic React questions
## Requirements
| Tool | Version |
|------|---------|
| Node.js | 20.9.0+ |
| TypeScript | 5.1.0+ |
| React | 19.2+ |
## Quick Start
```bash
# New project
npx create-next-app@latest my-app
# Upgrade existing
npx @next/codemod@canary upgrade latest
npm install next@latest react@latest react-dom@latest
```
Recommended: TypeScript, ESLint, Tailwind, App Router, Turbopack, `@/*` alias.
### Minimal Setup
```tsx
// app/layout.tsx
export default function RootLayout({ children }: { children: React.ReactNode }) {
return (
<html lang="en">
<body>{children}</body>
</html>
)
}
```
```tsx
// app/page.tsx
export default function Page() {
return <h1>Hello, Next.js 16!</h1>
}
```
## Configuration
```ts
// next.config.ts
import type { NextConfig } from 'next'
const nextConfig: NextConfig = {
cacheComponents: true,
reactCompiler: true,
}
export default nextConfig
```
### v15 → v16 Changes
| v15 | v16 |
|-----|-----|
| `experimental.turbopack` | Default |
| `experimental.ppr` | `cacheComponents` |
| `middleware.ts` (Edge) | `proxy.ts` (Node) |
| Sync `params` | `await params` |
## Core Patterns
### 1. Server Components (Default)
```tsx
export default async function BlogPage() {
const res = await fetch('https://api.example.com/posts')
const posts = await res.json()
return <PostList posts={posts} />
}
```
### 2. Cache Components
```tsx
import { cacheLife } from 'next/cache'
export default async function BlogPage() {
'use cache'
cacheLife('hours')
const posts = await fetch('https://api.example.com/posts').then(r => r.json())
return <PostList posts={posts} />
}
```
### 3. Client Components
```tsx
'use client'
import { useState } from 'react'
export default function Counter() {
const [count, setCount] = useState(0)
return (
<div>
<p>Count: {count}</p>
<button onClick={() => setCount(count + 1)}>+</button>
</div>
)
}
```
### 4. Proxy Boundary
```ts
// app/proxy.ts
export function proxy(request: NextRequest) {
if (!request.cookies.get('auth') && request.nextUrl.pathname.startsWith('/dashboard')) {
return NextResponse.redirect(new URL('/login', request.url))
}
return NextResponse.next()
}
```
### 5. Cache Tags + Server Actions
```tsx
// app/blog/page.tsx
'use cache'
cacheLife('hours')
cacheTag('blog-posts')
export default async function BlogList() {
const posts = await db.posts.findMany()
return <PostList posts={posts} />
}
```
```ts
// app/actions.ts
'use server'
import { updateTag } from 'next/cache'
export async function createPost(data: PostData) {
await db.posts.create(data)
updateTag('blog-posts')
}
```
### 6. Streaming with Suspense
```tsx
export default function Dashboard() {
return (
<div>
<Suspense fallback={<Skeleton />}>
<RevenueCard />
</Suspense>
<Suspense fallback={<Skeleton />}>
<UsersCard />
</Suspense>
</div>
)
}
async function RevenueCard() {
const data = await db.analytics.revenue()
return <div>{data}</div>
}
```
## Key Concepts
1. **Turbopack** - Rust bundler, incremental compilation, Fast Refresh
2. **Server Components** - Default in `app/`, zero client JS
3. **Client Components** - `'use client'`, hooks, browser APIs
4. **Cache Components** - `'use cache'` + `cacheLife()` for PPR
5. **Proxy Boundary** - `proxy.ts` for auth/rewrites/redirects
6. **Partial Pre-Rendering** - Static shell + dynamic streaming
## Migration Checklist
1. **Async Request APIs**
```bash
npx @next/codemod@canary async-request-api
```
Update: `const { slug } = await params`
2. **middleware.ts → proxy.ts**
- Rename file, export `proxy`
- Node runtime only (not Edge)
3. **Config updates**
- Remove `experimental.*` flags
- Enable `cacheComponents`, `reactCompiler`
- Remove `serverRuntimeConfig`/`publicRuntimeConfig`
4. **Cache Components**
- Replace `experimental.ppr` with `cacheComponents: true`
- Wrap dynamic sections with `<Suspense>`
5. **Images**
- Configure `images.localPatterns` for query strings
See `references/nextjs16-migration-playbook.md` for complete guide.
## Common Pitfalls
❌ Mixing `'use cache'` with runtime APIs (`cookies()`, `headers()`)
❌ Missing `<Suspense>` when Cache Components enabled
❌ Tilde Sass imports under Turbopack
❌ Running `proxy.ts` on Edge runtime
✅ Read cookies/headers first, pass as props to cached components
✅ Wrap dynamic children in `<Suspense>`
✅ Use standard Sass imports
✅ Use Node runtime for proxy
## Decision Guide
**Enable Cache Components?**
→ Yes for static/semi-static content
→ No for fully dynamic dashboards
**Where does auth live?**
→ `proxy.ts` for cross-route checks
→ Route handlers for API-specific logic
**When to use `'use client'`?**
→ Only when you need hooks, state, or browser APIs
→ Keep presentational components server-side
## Production Patterns
### E-commerce
```tsx
// Product page with streaming
export default async function Product({ params }) {
const { id } = await params
const product = await db.products.findById(id)
return (
<>
<ProductInfo product={product} />
<Suspense fallback={<ReviewsSkeleton />}>
<Reviews productId={id} />
</Suspense>
</>
)
}
```
### Authenticated Dashboard
```ts
// proxy.ts
export function proxy(request: NextRequest) {
const session = request.cookies.get('session')
if (!session && request.nextUrl.pathname.startsWith('/dashboard')) {
return NextResponse.redirect(new URL('/login', request.url))
}
}
```
See `references/nextjs16-advanced-patterns.md` for more blueprints.
## Performance
- Keep Turbopack enabled (opt-out with `--webpack` only if needed)
- Parallelize fetches with `Promise.all`
- Use `<Suspense>` for streaming boundaries
- Enable file system cache for large repos
## Security
- Use `server-only` package + React Taint API
- Keep auth in `proxy.ts`
- Validate inputs in Server Actions
- Gate env vars with `NEXT_PUBLIC_` prefix
- Extract cookies/headers before cached scopes
## Deployment
- Vercel: Zero-config
- Docker/Node: `output: 'standalone'`
- Monitor build times (2-5× speedup expected)
- Configure cache lifecycles to match CDN
## Reference Files
- **references/nextjs16-reference.md** - Install/config/checklists
- **references/nextjs16-migration-playbook.md** - Migration guide with codemods
- **references/nextjs16-advanced-patterns.md** - Streaming, caching, auth patterns
- **references/NEXTJS_16_COMPLETE_GUIDE.md** - Complete documentation
- **scripts/bootstrap-nextjs16.ps1** - Automated setup script
- **assets/app-router-starter/** - Reference implementation
## Resources
- Docs: https://nextjs.org/docs
- GitHub: https://github.com/vercel/next.js
**Version:** 1.1.0 | **Updated:** 2025-12-27