This example demonstrates how to load CSV data asynchronously and display its summary statistics in a React application. Using D3’s `csv` function, it fetches a named-colors dataset from a GitHub gist, then formats a text-based report showing file size in kilobytes, row count, and column count via `d3.csvFormat` and the `message` utility. The interface toggles between a “Loading” state and the computed metrics. React manages the component’s lifecycle with `useEffect` and `useState`, while `ReactDOM.render` mounts the app.