This example shows a grid of randomly generated smiley faces, each with different eye positions, mouth widths, and stroke thicknesses. Built with React and D3 v5, the code splits face components into separate ES6 modules (Face, Eyes, Mouth, FaceContainer) and uses React Fragments to group elements. D3’s arc generator creates the mouth path, while a range from d3 generates the array of faces, each rendered as SVG with randomized parameters.