This example renders a simple yellow smiley face as an SVG graphic using React for structure and D3’s `arc` generator to draw the smile path. The face consists of a large yellow circle with a blue stroke, two black eye circles, and an arc-shaped mouth positioned via SVG transforms. It demonstrates how to combine React components with D3 shape APIs inside a minimal HTML page, using fixed dimensions and hardcoded coordinates rather than data-driven scaling or interaction.