This example demonstrates a reusable D3.js chart component implemented in React, visualizing JavaScript libraries by their GitHub stars (x-axis) and minified file size (y-axis). Circle size and fill color encode star count, with a tooltip revealing library name and metrics. Built with D3's `scaleSqrt`, `scaleLinear`, `axisBottom`, and `axisLeft`, it loads data from a CSV via `d3.csv` and renders SVG, leveraging a fluent chart factory with configurable accessors for margins and data fields.