This example demonstrates a minimal integration of React and D3 for loading and summarizing a local CSS named colors dataset. The interface displays a plain-text summary of the loaded data, including its size in kilobytes, row count, and column count, while showing a "Loading..." message before the data arrives. The application uses React's `useState` and `useEffect` hooks to manage asynchronous data fetching through D3's `csv` function, and a custom `message` module reports the data dimensions. The visualization is rendered via ReactDOM into a single `<pre>` element, with D3 v5 and React 16.9.0 loaded from CDNs.