This example renders a stylized emoji face with a closed mouth using React and D3. The face is drawn as a yellow circle with black strokes, two offset eye circles, and a wink represented by a horizontal line. The mouth is created using the D3 `arc()` generator and scaled SVG coordinate transforms. The visualization demonstrates integrating D3 shape generators within a React component, rendering to SVG with a minimal HTML page loading React, ReactDOM, and D3 from unpkg.