scaffold-nextjs-app
About
This skill scaffolds a new Next.js application with App Router, TypeScript, and modern production-ready defaults. It handles project creation, directory structure, routing setup, and initial configuration. Use it when starting a new web application project that requires a React-based frontend with server-side rendering or a full-stack application with API routes.
Quick Install
Claude Code
Recommendednpx skills add pjt222/agent-almanac -a claude-code/plugin add https://github.com/pjt222/agent-almanacgit clone https://github.com/pjt222/agent-almanac.git ~/.claude/skills/scaffold-nextjs-appCopy and paste this command in Claude Code to install this skill
Documentation
構建 Next.js 應用腳手架
以 App Router、TypeScript 與生產就緒之預設建立 Next.js 應用。
適用時機
- 新建網頁應用項目
- 建立含伺服器端渲染之 React 前端
- 建構含 API 路由之全端應用
- 從頭設置 TypeScript 網頁項目
輸入
- 必要:應用名
- 必要:套件管理器偏好(npm、yarn、pnpm)
- 選擇性:是否含 Tailwind CSS(預設:是)
- 選擇性:是否含 ESLint(預設:是)
- 選擇性:src/ 目錄結構(預設:是)
步驟
步驟一:建立項目
npx create-next-app@latest my-app \
--typescript \
--tailwind \
--eslint \
--app \
--src-dir \
--import-alias "@/*"
回應提示或用旗標非互動式設定所有選項。
預期: 項目目錄已建立,所有依賴已安裝。
失敗時: 檢查 Node.js 版本(node --version,須 >= 18.17)。確保 npx 可用。若命令於提示處懸停,加入 --use-npm 旗標(或 --use-pnpm/--use-yarn)以跳過套件管理器提示。
步驟二:驗證項目結構
my-app/
├── src/
│ ├── app/
│ │ ├── layout.tsx # Root layout
│ │ ├── page.tsx # Home page
│ │ ├── globals.css # Global styles
│ │ └── favicon.ico
│ └── lib/ # Shared utilities (create manually)
├── public/ # Static assets
├── next.config.ts # Next.js configuration
├── tailwind.config.ts # Tailwind configuration
├── tsconfig.json # TypeScript configuration
├── package.json
└── .eslintrc.json
預期: 所有列出之目錄與文件皆存在。
失敗時: 若 src/ 目錄缺失,未傳 --src-dir 旗標。重新執行 create-next-app 附該旗標,或手動將文件移入 src/app/。
步驟三:配置 Next.js
依項目需求編輯 next.config.ts:
import type { NextConfig } from "next";
const nextConfig: NextConfig = {
// Enable React strict mode
reactStrictMode: true,
// Image optimization domains
images: {
remotePatterns: [
{
protocol: "https",
hostname: "example.com",
},
],
},
};
export default nextConfig;
預期: next.config.ts 儲存無 TypeScript 錯誤。
失敗時: 若文件用 .js 副檔名而非 .ts,重新命名之。確保 NextConfig 類型自 "next" 引入。
步驟四:設置目錄慣例
建立常用目錄:
mkdir -p src/app/api
mkdir -p src/components
mkdir -p src/lib
mkdir -p src/types
預期: 四目錄皆於 src/ 下建立。
失敗時: 若 src/ 不存在,先建立之或調整路徑以符合項目結構(非 src 佈局於根用 app/)。
步驟五:建立基底佈局
編輯 src/app/layout.tsx:
import type { Metadata } from "next";
import { Inter } from "next/font/google";
import "./globals.css";
const inter = Inter({ subsets: ["latin"] });
export const metadata: Metadata = {
title: "My Application",
description: "Application description",
};
export default function RootLayout({
children,
}: {
children: React.ReactNode;
}) {
return (
<html lang="en">
<body className={inter.className}>{children}</body>
</html>
);
}
預期: 佈局以 Inter 字體渲染並包覆所有頁面。
失敗時: 若字體載入失敗,檢查網路存取。將 Inter 暫時換為系統字體後備。
步驟六:加入範例 API 路由
建立 src/app/api/health/route.ts:
import { NextResponse } from "next/server";
export async function GET() {
return NextResponse.json({ status: "ok", timestamp: new Date().toISOString() });
}
預期: 文件已建於 src/app/api/health/route.ts。
失敗時: 確保 api/health/ 目錄存在。文件須匯出具名 HTTP 方法處理器(GET、POST 等),非預設匯出。
步驟七:執行開發伺服器
cd my-app
npm run dev
預期: 應用於 http://localhost:3000 運行。
失敗時: 檢查 Node.js 版本(>= 18.17)。若依賴缺失,執行 npm install。
驗證
-
npm run dev無錯誤啟動 - 首頁於 localhost:3000 載入
- TypeScript 編譯成功
- Tailwind CSS 類別已套用
- API 路由於 /api/health 回應
- ESLint 無錯誤執行(
npm run lint)
常見陷阱
- Node.js 版本:Next.js 需 Node.js >= 18.17。以
node --version檢查。 - 連接埠衝突:預設 3000 連接埠可能被佔。改用
npm run dev -- -p 3001。 - 引入別名混淆:
@/*對應src/*。勿與 node_modules 引入混淆。 - Pages 對 App Router:確保用 App Router(
src/app/)非 Pages Router(src/pages/)。
相關技能
setup-tailwind-typescript- 詳細 Tailwind 與 TypeScript 配置deploy-to-vercel- 部署腳手架應用configure-git-repository- 版本控制設置
GitHub Repository
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