This example shows cumulative COVID-19 death totals over time for multiple countries, plotted as small multiples on a single log-scaled chart. The visualization uses a Voronoi overlay to partition the chart area, enabling hover interactions across closely clustered lines. Built with React and D3 v6, it fetches data from the CSSEGISandData COVID-19 GitHub repository, transforms the CSV into per-country time series, and renders SVG paths with `scaleLog`, `scaleTime`, and `line`. The `VoronoiOverlay` component uses `d3.Delaunay` to generate the overlay regions.