This example shows a simple, smiley-face drawing rendered with React and SVG. The code creates a yellow circle with a black outline, two eyes, and a mouth, all positioned using coordinate variables. It leverages D3’s `arc()` function to generate the mouth path, while React’s `createRoot` manages the component tree. The visualization is static, with dimensions set to the browser window size via `window.innerWidth` and `window.innerHeight`.