diff --git a/node_modules/d3-color/dist/d3-color.js b/node_modules/d3-color/dist/d3-color.js
index ba46026..5742b8c 100644
--- a/node_modules/d3-color/dist/d3-color.js
+++ b/node_modules/d3-color/dist/d3-color.js
@@ -7,7 +7,12 @@ typeof define === 'function' && define.amd ? define(['exports'], factory) :
 
 function define(constructor, factory, prototype) {
   constructor.prototype = factory.prototype = prototype;
-  prototype.constructor = constructor;
+  Object.defineProperty(prototype, 'constructor', {
+    value: constructor,
+    writable: true,
+    enumerable: true,
+    configurable: true
+  });
 }
 
 function extend(parent, definition) {