To bring together D3 and React (thereby unifying their visualization stack), Airbnb created and OSS’ed visx, a collection of expressive, low-level visualization primitives for React. Visx was designed specifically for frontend developers, who may lack expertise in data visualization and may require highly expressive and performant libraries. Visx, which is split into multiple packages to reduce bundle sizes and is intentionally un-opinionated, can be used to build charting libraries that are optimized for specific use cases.