This example shows a React application that uses D3 to load and summarize a CSV dataset. It displays a message reporting the data’s size in kilobytes, row count, and column count, or a "Loading…" placeholder while fetching. The code uses React’s `useState` and `useEffect` hooks alongside D3’s `csv` function to asynchronously retrieve data from a GitHub gist. The rendered output is a simple HTML `pre` element, demonstrating the integration of React and D3 for data loading workflows.