This example visualizes the file-size distribution of the `plotly.js` source map using a treemap, where each rectangle represents a module and its size corresponds to byte count. The data originates from the source map’s parsed module sizes, as seen in the embedded tree object. Rendered with WebGL via the `webtreemap` library, the visualization uses a flat, zoomable layout. The code references the raw module paths and sizes, but the treemap itself relies on the library’s CSS and JavaScript to draw the interactive, clickable map, highlighting dominant dependencies like `d3.js` and `bn.js`.