const { useState } = React;
const html = htm.bind(React.createElement);

const App = () => {
  const [count, setCount] = useState(0);
  const increment = () => setCount(count+1);
  const decrement = () => setCount(count-1);

  return html`
    <div class="app">
        <button onClick=${decrement}> - </button>
        <strong> ${count} </strong>
        <button onClick=${increment}> + </button>
      </div>
    </div>
  `;
};

ReactDOM.render(html`<${App} />`, document.getElementById('root'));