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hello-programmer-world / src / components / Counter.jsx
import { useState } from 'preact/hooks';

export default function Counter({ children }) {
  const [count, setCount] = useState(0);
  const add = () => setCount((i) => i + 1);
  const subtract = () => setCount((i) => i - 1);

  return (
    <>
      <div class="counter">
        <button onClick={subtract}>-</button>
        <pre>{count}</pre>
        <button onClick={add}>+</button>
      </div>
      <div class="counter-message">{children}</div>
    </>
  );
}