This example renders an emoji-like yellow face with ears, eyes, and a curved mouth using Scalable Vector Graphics (SVG) in a React application. The face is built with D3’s `arc()` generator to create the ear and mouth shapes, while plain SVG circles form the eyes and head. The code positions elements by grouping them with `<g>` transforms around a central point, and demonstrates refactoring by separating dimensions and offsets into named constants. It loads React, ReactDOM, and D3 v7 via UMD builds from unpkg.com, with all drawing happening declaratively through JSX.