This example demonstrates a minimal data-processing snippet that sorts an array of key-value entries alphabetically by their `key` field. The code imports the `ascending` function from the D3 library (version 7.9.0), though it ultimately uses a custom comparator with `Array.sort` to order the entries. The visualization consists of an HTML page with a single `index.js` script and a `styles.css` file that defines a large centered message class, but no graphical output is rendered.