Esmx Hub
src/app.tsx
import { useState } from 'react'

export function Counter() {
  const [count, setCount] = useState(0)
  return (
    <>
      <p>Count: {count}</p>
      <button onClick={() => setCount(c => c + 1)}>+</button>
      <button onClick={() => setCount(c => c - 1)}>−</button>
    </>
  )
}

React 19 Micro-App

Count
0
React 19RspackSSR
source · examples/micro-app/ssr-micro-react/src/app.tsx