Index: node_modules/d3-selection/src/namespace.js
===================================================================
--- node_modules/d3-selection/src/namespace.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-selection/src/namespace.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,7 @@
+import namespaces from "./namespaces.js";
+
+export default function(name) {
+  var prefix = name += "", i = prefix.indexOf(":");
+  if (i >= 0 && (prefix = name.slice(0, i)) !== "xmlns") name = name.slice(i + 1);
+  return namespaces.hasOwnProperty(prefix) ? {space: namespaces[prefix], local: name} : name; // eslint-disable-line no-prototype-builtins
+}