This example shows how to load external CSV data in a React application using D3 utilities. The component displays a loading message until the data arrives, then shows a summary of the dataset—its size in kilobytes, row count, and column count—in large monospace text. The code uses React’s `useState` and `useEffect` hooks to manage the asynchronous data-fetching lifecycle, calling `d3.csv` on the specified GitHub Gist URL and storing the parsed result in state. Only the data’s metadata is rendered, not the actual CSV contents.