This example demonstrates a minimal React and D3 integration for loading and summarizing CSS named color data from a remote CSV file. The app uses React hooks `useState` and `useEffect` to manage asynchronous data loading, invoking `d3.csv` to fetch the dataset. Once loaded, it displays a text summary generated by a custom `message` function that reports the file size in kilobytes, row count, and column count using `d3.csvFormat` and `data.columns`. While waiting, the interface shows a “Loading…” placeholder.