This visualization uses a circle pack layout to map the hierarchical structure of the React source code, with each node’s radius proportional to its file size. Each circle is filled with a radial gradient, where file extensions map to distinct colors and directory depth maps to a grayscale. The D3 zoom behavior enables panning and scaling, while labels show truncated file names. Data is loaded from a remote JSON Gist, and memoization is handled through a custom `computed` utility inspired by React’s `useMemo`.