diff --git a/lib/index.js b/lib/index.js
index 14b8a10..e7e50e5 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -9,19 +9,25 @@
 //  - authentication and write APIs
 
 (function() {
-    var ie = (function() {
-        var undef
-          , v = 3
-          , div = document.createElement('div')
-          , all = div.getElementsByTagName('i')
+    var global = this
+      , isBrowser = 'document' in global
+      , ie
 
-        while (
-          div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->',
-          all[0]
-        );
+    if (isBrowser) {
+        ie = (function() {
+            var undef
+              , v = 3
+              , div = document.createElement('div')
+              , all = div.getElementsByTagName('i')
 
-        return v > 4 ? v : undef
-    }())
+            while (
+              div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->',
+              all[0]
+            );
+
+            return v > 4 ? v : undef
+        }())
+    }
 
     var inherits
     if ('create' in Object) {
@@ -55,10 +61,8 @@
         }
     }
 
-    var global = this
-      , isBrowser = 'document' in global
-      // when running in the browser request is set later
-      , request = isBrowser ? null : require('request')
+    // when running in the browser request is set later
+    var request = isBrowser ? null : require('request')
       , Blob, Branch, Commit, Raw, Repo, Tree, User
       , api