This repository provides a D3 plugin that generates **additive‑weighted 2‑D Voronoi (power) diagrams**—a tessellation where each site has a weight that expands or shrinks its cell. It is intended for web developers and data‑visualisation specialists using D3 (v4–v6) who need weighted Voronoi layouts, such as for Voronoi‑based treemaps or animated map visualisations.