Index: node_modules/d3-array/src/rank.js
===================================================================
--- node_modules/d3-array/src/rank.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-array/src/rank.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,24 @@
+import ascending from "./ascending.js";
+import {ascendingDefined, compareDefined} from "./sort.js";
+
+export default function rank(values, valueof = ascending) {
+  if (typeof values[Symbol.iterator] !== "function") throw new TypeError("values is not iterable");
+  let V = Array.from(values);
+  const R = new Float64Array(V.length);
+  if (valueof.length !== 2) V = V.map(valueof), valueof = ascending;
+  const compareIndex = (i, j) => valueof(V[i], V[j]);
+  let k, r;
+  values = Uint32Array.from(V, (_, i) => i);
+  // Risky chaining due to Safari 14 https://github.com/d3/d3-array/issues/123
+  values.sort(valueof === ascending ? (i, j) => ascendingDefined(V[i], V[j]) : compareDefined(compareIndex));
+  values.forEach((j, i) => {
+      const c = compareIndex(j, k === undefined ? j : k);
+      if (c >= 0) {
+        if (k === undefined || c > 0) k = j, r = i;
+        R[j] = r;
+      } else {
+        R[j] = NaN;
+      }
+    });
+  return R;
+}