Index: node_modules/d3-selection/src/selection/call.js
===================================================================
--- node_modules/d3-selection/src/selection/call.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
+++ node_modules/d3-selection/src/selection/call.js	(revision e4c61dd6cd86e06265bc2bd91adba84a0f04044a)
@@ -0,0 +1,6 @@
+export default function() {
+  var callback = arguments[0];
+  arguments[0] = this;
+  callback.apply(null, arguments);
+  return this;
+}