Simpler no-global for CommonJS.

We don’t need the index.js to unset the global if we don’t set it.

d3.js

@@ -9499,6 +9499,5 @@
   d3.xml = d3_xhrType(function(request) {
     return request.responseXML;
   });
-  if (typeof define === "function" && define.amd) define(d3); else if (typeof module === "object" && module.exports) module.exports = d3;
-  this.d3 = d3;
+  if (typeof define === "function" && define.amd) define(this.d3 = d3); else if (typeof module === "object" && module.exports) module.exports = d3; else this.d3 = d3;
 }();
\ No newline at end of file

index.js

-var globals = {};
-
-// Stash old global.
-if ("d3" in global) globals.d3 = global.d3;
-
-module.exports = require("./d3");
-
-// Restore old global.
-if ("d3" in globals) global.d3 = globals.d3; else delete global.d3;

package.json

@@ -25,7 +25,7 @@
     "type": "git",
     "url": "https://github.com/mbostock/d3.git"
   },
-  "main": "index.js",
+  "main": "d3.js",
   "browserify": "d3.js",
   "jspm": {
     "main": "d3",

src/end.js

-  if (typeof define === "function" && define.amd) define(d3);
+  if (typeof define === "function" && define.amd) define(this.d3 = d3);
   else if (typeof module === "object" && module.exports) module.exports = d3;
-  this.d3 = d3;
+  else this.d3 = d3;
 }();