This example shows a yellow smiley face with black-outlined eyes and a curved mouth, rendered as an SVG graphic inside a React application. The code combines React components with D3’s `arc` generator to construct the mouth path, while plain SVG circles define the face and eyes. It uses D3 v5 and React 16.9, with the entire drawing positioned around a central transform. The visualization demonstrates how D3 geometry can be integrated into a React rendering pipeline for simple custom charts.