Next.js Documentation - Product Name

Introduction

Welcome to the Next.js application documentation. This comprehensive guide will help you understand, install, configure, and extend your Next.js application.

Next.js Version: This application is built with Next.js 14+ with App Router

Our Next.js application provides a production-ready, full-stack solution built with the latest Next.js features including App Router, React Server Components, Server Actions, and streaming. Whether you're building a static site, a dynamic web app, or a full-stack application, this documentation will guide you through every aspect.

Features

App Router

Modern file-based routing with nested layouts and React Server Components.

Server Components

Zero-bundle JavaScript with React Server Components for better performance.

Streaming SSR

Progressive rendering with React Suspense for instant page loads.

Server Actions

Built-in data mutations without API routes for seamless form handling.

Image Optimization

Automatic image optimization with next/image for perfect performance.

Font Optimization

Zero layout shift with automatic self-hosting of Google Fonts.

System Requirements

Before installing, ensure your system meets these requirements:

Node.js

Node.js 18.17 or higher

Package Manager

NPM, Yarn, pnpm, or Bun

Git

Git version control (recommended)

Code Editor

VS Code with TypeScript support

Quick Start

Important: For detailed installation instructions, visit the Installation Guide.

1

Clone or Download

Get the application files from your download package.

# Clone the repository
git clone https://github.com/yourapp/nextjs-app.git
cd nextjs-app

2

Install Dependencies

Install all required packages using your preferred package manager.

# Using NPM
npm install

# Or using Yarn
yarn install

# Or using pnpm
pnpm install

# Or using Bun
bun install

3

Environment Setup

Create your environment configuration file.

# Copy environment file
cp .env.example .env.local

# Edit with your settings
DATABASE_URL=postgresql://user:password@localhost:5432/dbname
NEXTAUTH_URL=http://localhost:3000
NEXTAUTH_SECRET=your-secret-key

4

Start Development Server

Launch the Next.js development server with Fast Refresh.

# Start the development server
npm run dev

# Or with Yarn
yarn dev

# Or with pnpm
pnpm dev

Visit http://localhost:3000 in your browser!

Project Structure

Understanding the Next.js 14 App Router project structure:

nextjs-app/
├── app/                  # App Router directory
│   ├── layout.tsx       # Root layout
│   ├── page.tsx         # Homepage
│   ├── loading.tsx      # Loading UI
│   ├── error.tsx        # Error UI
│   ├── api/             # API routes
│   │   └── users/
│   │       └── route.ts
│   ├── (dashboard)/     # Route groups
│   │   ├── layout.tsx
│   │   └── page.tsx
│   └── blog/
│       ├── [slug]/      # Dynamic routes
│       │   └── page.tsx
│       └── page.tsx
├── components/          # React components
│   ├── ui/             # UI components
│   ├── forms/          # Form components
│   └── layout/         # Layout components
├── lib/                # Utility functions
│   ├── db.ts          # Database client
│   └── utils.ts       # Helper functions
├── public/             # Static assets
│   ├── images/
│   └── favicon.ico
├── styles/             # Global styles
│   └── globals.css
├── next.config.js      # Next.js configuration
├── package.json        # Dependencies
└── tsconfig.json       # TypeScript config

App Router: Next.js 14 uses the app/ directory for routing. Each folder represents a route segment.

NPM Scripts

Available Commands

Command	Description
`npm run dev`	Start development server with Fast Refresh on port 3000
`npm run build`	Build production-optimized application
`npm start`	Start production server (requires build first)
`npm run lint`	Run ESLint to check code quality
`npm run type-check`	Run TypeScript type checking
`npm run format`	Format code with Prettier

Next.js Application Documentation