This example demonstrates how to load CSV data with D3 and integrate it into a React component’s state. The app fetches a named-colors dataset from a GitHub gist using `d3.csv`, then displays the file size, row count, and column count in large red text. The React `useState` and `useEffect` hooks manage the asynchronous data loading, while a separate `message.js` utility formats the summary using `d3.csvFormat` and the `data.columns` property.