This example shows how React and D3 work together to load and display data. The React component uses the `useState` and `useEffect` hooks to fetch a CSV of CSS named colors via `d3.csv`, then renders a text summary of the dataset. The `message` function calculates the file size in kilobytes, row count, and column count using `d3.csvFormat` and `data.columns`. While the data loads, the display shows a “loading...” message, and once loaded, it presents the dataset’s statistics in a large `<pre>` element.