This example renders a stylized yellow face built with React and D3 v7, displaying a circular head, two black eyes, and a curved mouth. The code defines React components for the background circle and left eye, while the right eye is written inline as a JSX element. The mouth is generated using the `arc` function from the `d3-shape` package, producing an SVG path within a `<g>` element that uses a transform attribute to center it. All shapes are drawn as SVG elements, with the face composed directly in the source code rather than from external data.