fixture.js

const { render } = require('react-dom');
const mount = document.querySelector('main');

class Root {
  render() {
    return (
      <div>Hello world</div>
    );
  }
}

render(<Root />, mount);

stats.sh

-rw-rw-r--   1 tbranyen 14K Jul 20 17:26 app.min.js.gz # Preact
-rw-rw-r--   1 tbranyen 19K Jul 20 17:20 app.min.js.gz # diffHTML
-rw-rw-r--   1 tbranyen 86K Jul 20 17:23 app.min.js.gz # React