This example renders a minimal React application that outputs the text “Hello” to the screen, while including commented-out SVG markup for a yellow smiley face with two eye circles. The React component uses `ReactDOM.render` to mount the app, and the code defines sample data arrays and a helper function (`getMaxOfKeysES6`) that calculates maximum values, though these are not used in the rendered output. The visualization relies on React 16.9 and renders as static SVG elements in the HTML.