This example demonstrates loading a CSV dataset of CSS named colors asynchronously with `d3.csv`, then displaying a summary of the loaded file—its size in kilobytes, row count, and column count—using React state. The `useEffect` hook triggers the data fetch, and the `useState` hook stores the parsed data, which is rendered as text in a `<pre>` element. The code relies on React hooks and the D3 `csvFormat` utility to compute the data’s size, showing a concise integration of React’s component lifecycle with D3’s data-loading API.