This example displays the raw contents of an airplane crashes and fatalities dataset, loaded from a CSV file and rendered as a JSON-formatted text preview. The visualization initially fetches the data using the Fetch API, parses it with `d3.csvParse`, and converts numeric fields to numbers. The `viz` function manages the loading state, showing a "LOADING" placeholder until the data arrives, then updates the display via a `setState` callback. The interface uses D3 v7 for DOM selection and rendering, presenting the parsed records in a simple `<pre>` element.