This example demonstrates a hybrid React and D3 workflow for loading and summarizing a CSV dataset. It uses the D3 `csv` utility to fetch data from a remote URL and React state to manage the asynchronous result. The app displays a loading message until the data arrives, then renders a text summary showing the file size in kilobytes, row count, and column count, all computed using D3’s `csvFormat` function. The rendering is a simple SVG-less HTML `<pre>` element, highlighting data loading rather than visual encoding.