This example shows a cartoon smiley face composed of modular React components: a yellow background circle, two black eyes, and a curved mouth. The code defines each facial feature as a separate ES6 module, imported into a central `Face` component that arranges them inside an SVG. The mouth uses `d3.arc` to generate a path from angular parameters. The visualization is rendered declaratively with React, using component attributes to set coordinates and dimensions, with the SVG output managed by the `FaceContainer`.