uUse debug/node instead of debug to avoid browserify using the browser version that references window - fixes #628

CHANGELOG.md

@@ -11,6 +11,11 @@
 
 _Note: Gaps between patch versions are faulty/broken releases._
 
+## 3.0.15
+
+ * **Bug Fix**
+  * Use `debug/node` instead of `debug` to avoid browserify using the browser version that references `window`.
+
 ## 3.0.14
 
  * **New Feature**

lib/6to5/util.js

@@ -5,7 +5,7 @@ require("./patch");
 var estraverse = require("estraverse");
 var codeFrame  = require("./helpers/code-frame");
 var traverse   = require("./traverse");
-var debug      = require("debug");
+var debug      = require("debug/node");
 var acorn      = require("acorn-6to5");
 var path       = require("path");
 var util       = require("util");