Index: node_modules/d3-geo/src/projection/equalEarth.js
===================================================================
--- node_modules/d3-geo/src/projection/equalEarth.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-geo/src/projection/equalEarth.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,36 @@
+import projection from "./index.js";
+import {abs, asin, cos, epsilon2, sin, sqrt} from "../math.js";
+
+var A1 = 1.340264,
+    A2 = -0.081106,
+    A3 = 0.000893,
+    A4 = 0.003796,
+    M = sqrt(3) / 2,
+    iterations = 12;
+
+export function equalEarthRaw(lambda, phi) {
+  var l = asin(M * sin(phi)), l2 = l * l, l6 = l2 * l2 * l2;
+  return [
+    lambda * cos(l) / (M * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2))),
+    l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2))
+  ];
+}
+
+equalEarthRaw.invert = function(x, y) {
+  var l = y, l2 = l * l, l6 = l2 * l2 * l2;
+  for (var i = 0, delta, fy, fpy; i < iterations; ++i) {
+    fy = l * (A1 + A2 * l2 + l6 * (A3 + A4 * l2)) - y;
+    fpy = A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2);
+    l -= delta = fy / fpy, l2 = l * l, l6 = l2 * l2 * l2;
+    if (abs(delta) < epsilon2) break;
+  }
+  return [
+    M * x * (A1 + 3 * A2 * l2 + l6 * (7 * A3 + 9 * A4 * l2)) / cos(l),
+    asin(sin(l) / M)
+  ];
+};
+
+export default function() {
+  return projection(equalEarthRaw)
+      .scale(177.158);
+}