This example demonstrates how to build a simple pie chart using D3.js within the VizHub environment. It loads D3 via UNPKG and uses the `select` function to update a message element, while also importing a local ES6 module for additional text. The code defines a constant and a regular expression, though the pie chart itself is not actually rendered in the visible logic. The focus is on showing data-visualization scaffolding and module integration rather than the chart’s visual output.