next.js/test/development/app-dir/owner-stack-react-missing-key-prop/app/ssr/page.tsx

'use client'

const list = [1, 2, 3]

export default function Page() {
  return (
    <div>
      {list.map((item, index) => (
        <p>{item}</p>
      ))}
    </div>
  )
}