This example demonstrates how to load a CSV dataset from a GitHub gist and display a summary message using React state. It uses the `useState` hook to hold the fetched data and `useEffect` with an empty dependency array to call d3.csv once on component mount. The `message` function computes the number of rows, columns, and approximate file size using d3.csvFormat. The result updates a `<pre>` element, showing either loading text or the computed statistics, with React handling the rendering.