Index: node_modules/d3-array/src/disjoint.js
===================================================================
--- node_modules/d3-array/src/disjoint.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-array/src/disjoint.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,15 @@
+import {InternSet} from "internmap";
+
+export default function disjoint(values, other) {
+  const iterator = other[Symbol.iterator](), set = new InternSet();
+  for (const v of values) {
+    if (set.has(v)) return false;
+    let value, done;
+    while (({value, done} = iterator.next())) {
+      if (done) break;
+      if (Object.is(v, value)) return false;
+      set.add(value);
+    }
+  }
+  return true;
+}