node-d3-shape 1.3.7+~1.3.8-1 (amd64 binary) in ubuntu mantic

 Visualizations typically consist of discrete graphical marks, such as symbols,
 arcs, lines and areas. While the rectangles of a bar chart may be easy enough
 to generate directly using SVG or Canvas, other shapes are complex, such as
 rounded annular sectors and centripetal Catmull–Rom splines.
 .
 This module provides a variety of shape generators for your convenience.
 .
 Node.js is an event-based server-side JavaScript engine.