This example demonstrates how to integrate D3’s data-loading utilities with React state management. The application fetches a CSV file of CSS named colors from a GitHub gist using `d3.csv`, stores the parsed dataset in React’s `useState` hook, and displays a summary message generated by a helper function. While loading, it shows “Loading…” text, then presents the file size in kilobytes, row count, and column count via `d3.csvFormat` and the array’s `length` and `columns` properties. The code uses React hooks (`useEffect`, `useState`) and D3 v7.