A fork of the Interactive Streamgraph Template recreated in React, this example displays a streamgraph where layered areas show the distribution of categories across a numerical index. The code fetches CSV data from a GitHub gist, parses it manually, and renders the visualization as SVG paths. It leverages React’s `useEffect` and `useRef` hooks, along with D3 v5 utilities including `d3.stack`, `d3.scaleLinear`, `d3.scaleOrdinal`, `d3.area`, and `d3.axisBottom`/`d3.axisLeft` to construct the chart, with axes added at the bottom and left.