This example displays the raw COVID-19 dataset as a formatted JSON preview, loading the CSV file via `fetch` and parsing it with `d3.csvParse`. The visualization shows the first rows of data, including date, region, confirmed cases, deaths, and recoveries, placing each field on a separate line for inspection. The code uses `d3.select` to manage a container element and `d3.selectAll` with a `join` operation to update the displayed content whenever the state changes, initially setting the data to a `'LOADING'` placeholder before fetching the file.