This visualization shows the evolution of D3 repository commits over time as a streamgraph, with each colored area representing a different repository and its width reflecting smoothed commit counts. The code loads JSON commit data, aggregates it by week and repository, and applies Gaussian blur smoothing via the `array-blur` library. It then uses D3's `stack` with `stackOffsetWiggle` and `stackOrderInsideOut` to generate the streamgraph layout, rendered as SVG paths with `areaGenerator`. The `d3-area-label` library positions labels within each stream, while hover interactions turn areas black.