TypedArray.prototype.copyWithin method

src/harmony-array.js

Index: src/harmony-array.js
diff --git a/src/harmony-array.js b/src/harmony-array.js
index 8520f351d158e7693d11fba3f15c1ce41a78fdbd..acf1b145e414774ab6604da2dd0bb7268e936d38 100644
--- a/src/harmony-array.js
+++ b/src/harmony-array.js
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+var $innerArrayCopyWithin;
+
 (function(global, exports) {
 
 'use strict';
@@ -13,13 +15,7 @@ var GlobalSymbol = global.Symbol;
 
 // -------------------------------------------------------------------
 
-// ES6 draft 03-17-15, section 22.1.3.3
-function ArrayCopyWithin(target, start, end) {
-  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.copyWithin");
-
-  var array = TO_OBJECT_INLINE(this);
-  var length = $toLength(array.length);
-
+function InnerArrayCopyWithin(target, start, end, array, length) {
   target = TO_INTEGER(target);
   var to;
   if (target < 0) {
@@ -65,6 +61,17 @@ function ArrayCopyWithin(target, start, end) {
 
   return array;
 }
+$innerArrayCopyWithin = InnerArrayCopyWithin;
+
+// ES6 draft 03-17-15, section 22.1.3.3
+function ArrayCopyWithin(target, start, end) {
+  CHECK_OBJECT_COERCIBLE(this, "Array.prototype.copyWithin");
+
+  var array = TO_OBJECT_INLINE(this);
+  var length = $toLength(array.length);
+
+  return InnerArrayCopyWithin(target, start, end, array, length);
+}
 
 // ES6 draft 07-15-13, section 15.4.3.23
 function ArrayFind(predicate /* thisArg */) {  // length == 1