diff --git a/lib/range.js b/lib/range.js
index c035ea5..7539a28 100644
--- a/lib/range.js
+++ b/lib/range.js
@@ -3,24 +3,28 @@
 
 exports.Range = Range;
 
+exports.extendNative = function() {
+  global.Range = Range;
+};
+
 function Range(start, length) {
-    this.start = start;
-    this.length = length;
+  this.start = start;
+  this.length = length;
 };
 
 Range.prototype.inRange = function(val) {
-    if (this.test) return this.test(val);
-    return val >= this.start && val <= this.start + this.length;
+  if (this.test) return this.test(val);
+  return val >= this.start && val <= this.start + this.length;
 };
 
 Range.prototype.toArray = function(nth) {
-    var a = []
-      , i = this.length
-      ;
-    nth = nth || this.nth;
-    if (nth)
-        while (i--) a[i] = nth(i);
-    else
-        while (i--) a[i] = this.start + i;
-    return a;
+  var a = []
+    , i = this.length
+    ;
+  nth = nth || this.nth;
+  if (nth)
+    while (i--) a[i] = nth(i);
+  else
+    while (i--) a[i] = this.start + i;
+  return a;
 };