This example renders a stylized smiley face using React and D3.js version 7, composed of SVG circles and a path. The face features a gradient-filled head with a drop shadow, two eyes with pink offset shadows, and a mouth drawn using a D3 arc generator. The code defines all geometry through hardcoded constants rather than data, with the arc’s inner radius, outer radius, and angle ranges set explicitly to form the smile. The rendering is driven by React’s declarative component model, which outputs the SVG directly.