d3 geojson polygons

conversion.js

d3 = require("d3-geo", "d3-geo-projection", "d3-geo-voronoi")

polygons = d3.geoVoronoi().polygons({…})

projected = d3.geoProject(
  d3.geoProject(
    polygons,
    d3
      .geoEquirectangular()
      .scale(180 / Math.PI)
      .translate([0, 0])
  ),
  d3.geoIdentity().reflectY(true)
)

polygons.json

projected.json

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