From 82971d7cd1f71e7cbf2ba3e43ffaf6f878a3fe12 Mon Sep 17 00:00:00 2001
From: Takuto Wada <takuto.wada@gmail.com>
Date: Mon, 23 Dec 2013 07:06:03 +0900
Subject: [PATCH] Remove private clone of Function#bind for old browsers
 (please use es5-shim).

---
 lib/empower.js | 22 ++--------------------
 1 file changed, 2 insertions(+), 20 deletions(-)

diff --git a/lib/empower.js b/lib/empower.js
index 238a330..3e51ca2 100644
--- a/lib/empower.js
+++ b/lib/empower.js
@@ -120,12 +120,12 @@
 
         config.targetMethods.oneArg.forEach(function (methodName) {
             if (typeof target[methodName] === 'function') {
-                enhancement[methodName] = decorateOneArg(bind(target[methodName], target), formatter);
+                enhancement[methodName] = decorateOneArg(target[methodName].bind(target), formatter);
             }
         });
         config.targetMethods.twoArgs.forEach(function (methodName) {
             if (typeof target[methodName] === 'function') {
-                enhancement[methodName] = decorateTwoArgs(bind(target[methodName], target), formatter);
+                enhancement[methodName] = decorateTwoArgs(target[methodName].bind(target), formatter);
             }
         });
 
@@ -204,24 +204,6 @@
     }
 
 
-    // borrowed from https://developer.mozilla.org/ja/docs/Web/JavaScript/Reference/Global_Objects/Function/bind
-    function bind (aFunction, oThis) {
-        if (typeof aFunction !== 'function') {
-            throw new TypeError('bind - what is trying to be bound is not callable');
-        }
-        var aArgs = Array.prototype.slice.call(arguments, 2),
-            fToBind = aFunction,
-            NOP = function () {},
-            fBound = function () {
-                return fToBind.apply(((aFunction instanceof NOP) && oThis) ? aFunction : oThis,
-                                     aArgs.concat(Array.prototype.slice.call(arguments)));
-            };
-        NOP.prototype = aFunction.prototype;
-        fBound.prototype = new NOP();
-        return fBound;
-    }
-
-
     // using returnExports UMD pattern with substack pattern
     empower.defaultOptions = defaultOptions;
     return empower;