This example demonstrates asynchronous data loading and parsing in a React-free D3 visualization, showing a loading indicator before rendering clickable circles from a CSV file. Using d3-rosetta's unidirectional data flow and `createStateField`, it manages state transitions from loading to succeeded or failed. When data arrives, `d3.csv` parses the x and y columns, then `renderCircles` draws circles that respond to clicks via `setupClickInteraction`, with `highlightSelectedDatum` visually distinguishing the selected point.