Smiley face with React
A yellow smiley face rendered in SVG via React uses D3's `arc` generator to create the mouth path. The face, eyes, and mouth are drawn as circle and path elements within a translated group, with the arc’s inner and outer radii and angles fixed. React 17 manages the component structure, while D3 v7 provides the geometric calculations. The static composition is centered on a 980 by 500 canvas.