Merge pull request #137 from XhmikosR/to-merge

updates Underscore.js to v1.4.2

src/_h5ai/client/js/lib/underscore-1.4.2.js

@@ -1,4 +1,4 @@
-//     Underscore.js 1.4.1
+//     Underscore.js 1.4.2
 //     http://underscorejs.org
 //     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore may be freely distributed under the MIT license.
@@ -65,7 +65,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.4.1';
+  _.VERSION = '1.4.2';
 
   // Collection Functions
   // --------------------
@@ -74,6 +74,7 @@
   // Handles objects with the built-in `forEach`, arrays, and raw objects.
   // Delegates to **ECMAScript 5**'s native `forEach` if available.
   var each = _.each = _.forEach = function(obj, iterator, context) {
+    if (obj == null) return;
     if (nativeForEach && obj.forEach === nativeForEach) {
       obj.forEach(iterator, context);
     } else if (obj.length === +obj.length) {
@@ -93,6 +94,7 @@
   // Delegates to **ECMAScript 5**'s native `map` if available.
   _.map = _.collect = function(obj, iterator, context) {
     var results = [];
+    if (obj == null) return results;
     if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
     each(obj, function(value, index, list) {
       results[results.length] = iterator.call(context, value, index, list);
@@ -104,6 +106,7 @@
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
     var initial = arguments.length > 2;
+    if (obj == null) obj = [];
     if (nativeReduce && obj.reduce === nativeReduce) {
       if (context) iterator = _.bind(iterator, context);
       return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
@@ -124,6 +127,7 @@
   // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
   _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
     var initial = arguments.length > 2;
+    if (obj == null) obj = [];
     if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
       if (context) iterator = _.bind(iterator, context);
       return arguments.length > 2 ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
@@ -163,6 +167,7 @@
   // Aliased as `select`.
   _.filter = _.select = function(obj, iterator, context) {
     var results = [];
+    if (obj == null) return results;
     if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
     each(obj, function(value, index, list) {
       if (iterator.call(context, value, index, list)) results[results.length] = value;
@@ -173,6 +178,7 @@
   // Return all the elements for which a truth test fails.
   _.reject = function(obj, iterator, context) {
     var results = [];
+    if (obj == null) return results;
     each(obj, function(value, index, list) {
       if (!iterator.call(context, value, index, list)) results[results.length] = value;
     });
@@ -185,6 +191,7 @@
   _.every = _.all = function(obj, iterator, context) {
     iterator || (iterator = _.identity);
     var result = true;
+    if (obj == null) return result;
     if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
     each(obj, function(value, index, list) {
       if (!(result = result && iterator.call(context, value, index, list))) return breaker;
@@ -198,6 +205,7 @@
   var any = _.some = _.any = function(obj, iterator, context) {
     iterator || (iterator = _.identity);
     var result = false;
+    if (obj == null) return result;
     if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
     each(obj, function(value, index, list) {
       if (result || (result = iterator.call(context, value, index, list))) return breaker;
@@ -209,6 +217,7 @@
   // Aliased as `include`.
   _.contains = _.include = function(obj, target) {
     var found = false;
+    if (obj == null) return found;
     if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
     found = any(obj, function(value) {
       return value === target;
@@ -500,6 +509,7 @@
   // If the array is large and already in sort order, pass `true`
   // for **isSorted** to use binary search.
   _.indexOf = function(array, item, isSorted) {
+    if (array == null) return -1;
     var i = 0, l = array.length;
     if (isSorted) {
       if (typeof isSorted == 'number') {
@@ -516,6 +526,7 @@
 
   // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
   _.lastIndexOf = function(array, item, from) {
+    if (array == null) return -1;
     var hasIndex = from != null;
     if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) {
       return hasIndex ? array.lastIndexOf(item, from) : array.lastIndexOf(item);