1 files changed, 25 insertions, 16 deletions

diff --git a/lib/handlebars/base.js b/lib/handlebars/base.js
index a6cd7ff..b375554 100644
--- a/lib/handlebars/base.js
+++ b/lib/handlebars/base.js
@@ -15,9 +15,24 @@ export var REVISION_CHANGES = {
 };
 
 var toString = Object.prototype.toString,
-    functionType = '[object Function]',
     objectType = '[object Object]';
 
+// Sourced from lodash
+// https://github.com/bestiejs/lodash/blob/master/LICENSE.txt
+function isFunction(value) {
+  return typeof value === 'function';
+}
+// fallback for older versions of Chrome and Safari
+if (isFunction(/x/)) {
+  isFunction = function(value) {
+    return typeof value === 'function' && toString.call(value) === '[object Function]';
+  };
+}
+
+function isArray(value) {
+  return (value && typeof value === 'object') ? toString.call(value) === '[object Array]' : false;
+};
+
 export function HandlebarsEnvironment(helpers, partials) {
   this.helpers = helpers || {};
   this.partials = partials || {};
@@ -59,15 +74,13 @@ function registerDefaultHelpers(instance) {
   instance.registerHelper('blockHelperMissing', function(context, options) {
     var inverse = options.inverse || function() {}, fn = options.fn;
 
-    var type = toString.call(context);
-
-    if(type === functionType) { context = context.call(this); }
+    if (isFunction(context)) { context = context.call(this); }
 
     if(context === true) {
       return fn(this);
     } else if(context === false || context == null) {
       return inverse(this);
-    } else if(type === "[object Array]") {
+    } else if (isArray(context)) {
       if(context.length > 0) {
         return instance.helpers.each(context, options);
       } else {
@@ -82,15 +95,14 @@ function registerDefaultHelpers(instance) {
     var fn = options.fn, inverse = options.inverse;
     var i = 0, ret = "", data;
 
-    var type = toString.call(context);
-    if(type === functionType) { context = context.call(this); }
+    if (isFunction(context)) { context = context.call(this); }
 
     if (options.data) {
       data = createFrame(options.data);
     }
 
     if(context && typeof context === 'object') {
-      if(context instanceof Array){
+      if (isArray(context)) {
         for(var j = context.length; i<j; i++) {
           if (data) { data.index = i; }
           ret = ret + fn(context[i], { data: data });
@@ -114,8 +126,7 @@ function registerDefaultHelpers(instance) {
   });
 
   instance.registerHelper('if', function(conditional, options) {
-    var type = toString.call(conditional);
-    if(type === functionType) { conditional = conditional.call(this); }
+    if (isFunction(conditional)) { conditional = conditional.call(this); }
 
     if (isEmpty(conditional)) {
       return options.inverse(this);
@@ -129,8 +140,7 @@ function registerDefaultHelpers(instance) {
   });
 
   instance.registerHelper('with', function(context, options) {
-    var type = toString.call(context);
-    if(type === functionType) { context = context.call(this); }
+    if (isFunction(context)) { context = context.call(this); }
 
     if (!isEmpty(context)) return options.fn(context);
   });
@@ -161,9 +171,8 @@ export var logger = {
 
 export function log(level, obj) { logger.log(level, obj); };
 
-export var createFrame = Object.create || function(object) {
-  K.prototype = object;
-  var obj = new K();
-  K.prototype = null;
+export var createFrame = function(object) {
+  var obj = {};
+  Handlebars.Utils.extend(obj, object);
   return obj;
 };