refactor: import d3

src/modules/define-globals.js

@@ -29,3 +29,54 @@ let distanceScale;
 let urbanization;
 let urbanDensity;
 let statesNeutral;
+
+// svg d3 selections
+let svg,
+  defs,
+  viewbox,
+  scaleBar,
+  legend,
+  ocean,
+  oceanLayers,
+  oceanPattern,
+  lakes,
+  landmass,
+  texture,
+  terrs,
+  biomes,
+  cells,
+  gridOverlay,
+  coordinates,
+  compass,
+  rivers,
+  terrain,
+  relig,
+  cults,
+  regions,
+  statesBody,
+  statesHalo,
+  provs,
+  zones,
+  borders,
+  stateBorders,
+  provinceBorders,
+  routes,
+  roads,
+  trails,
+  searoutes,
+  temperature,
+  coastline,
+  ice,
+  prec,
+  population,
+  emblems,
+  labels,
+  icons,
+  burgLabels,
+  burgIcons,
+  anchors,
+  armies,
+  markers,
+  fogging,
+  ruler,
+  debug;