This example demonstrates a React component that loads CSS color data from an external CSV file and displays a short summary of its contents. The interface shows a loading message while the data is being fetched, then renders statistics including the file size in kilobytes, the number of rows, and the number of columns. The code uses React hooks like `useState`, `useEffect`, and `useCallback` to manage the data-fetching lifecycle, with the `csv` function from d3.v7 retrieving the dataset from a GitHub gist. The `message` utility formats the summary using `d3.csvFormat` to calculate file size.