Index: node_modules/d3-geo/src/projection/azimuthal.js
===================================================================
--- node_modules/d3-geo/src/projection/azimuthal.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-geo/src/projection/azimuthal.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,27 @@
+import {asin, atan2, cos, sin, sqrt} from "../math.js";
+
+export function azimuthalRaw(scale) {
+  return function(x, y) {
+    var cx = cos(x),
+        cy = cos(y),
+        k = scale(cx * cy);
+        if (k === Infinity) return [2, 0];
+    return [
+      k * cy * sin(x),
+      k * sin(y)
+    ];
+  }
+}
+
+export function azimuthalInvert(angle) {
+  return function(x, y) {
+    var z = sqrt(x * x + y * y),
+        c = angle(z),
+        sc = sin(c),
+        cc = cos(c);
+    return [
+      atan2(x * sc, z * cc),
+      asin(z && y * sc / z)
+    ];
+  }
+}