Cài nextjs version cũ

# init the package.json
npm init

# intall next dependencies
npm install next@12.3.4 react react-dom

// edit your package.json with next scripts
"scripts": {
  "dev": "next dev",
  "build": "next build",
  "start": "next start",
  "lint": "next lint"
}

# create the file structure
.
├── package.json
├── pages
│   ├── index.js

// init your index.js
import React from "react";

function index() {
  return <div>Hello world</div>;
}

export default index;

# start next
npm run dev