D3 SVG Annotation

d3-svg-annotation is a D3.js module designed to streamline the process of adding various types of annotations to SVG-based data visualizations. It provides a flexible API for creating notes, connectors, and subjects directly on a D3-rendered chart, offering configurable styling, text wrapping, and dynamic positioning. The current stable version is 2.5.1. The package maintains a release cadence focused on addressing bugs and implementing minor feature enhancements, with significant breaking changes typically reserved for major version bumps. Its primary differentiation lies in its tight integration with the D3 ecosystem, providing a programmatic way to add rich context and explanations to complex charts without needing separate HTML overlays or manual SVG manipulation.