Update vendor/underscore to v1.4.3 and update the Underscore build compatibility.

Former-commit-id: ebcaad4a92848bef3bbf65bb8eb3a0c1553e005c

build.js

@@ -841,7 +841,7 @@
       // clip snippet after the JSDoc comment block
       match = match.replace(/^\s*(?:\/\/.*|\/\*[^*]*\*+(?:[^\/][^*]*\*+)*\/)\n/, '');
       source = source.replace(match, function() {
-        return funcValue;
+        return funcValue.trimRight() + '\n';
       });
     }
     return source;
@@ -1313,13 +1313,6 @@
           '  }'
         ].join('\n'));
 
-        // replace `_.isFinite`
-        source = replaceFunction(source, 'isFinite', [
-          '  function isFinite(value) {',
-          '    return nativeIsFinite(value) && toString.call(value) == numberClass;',
-          '  }'
-        ].join('\n'));
-
         // replace `_.omit`
         source = replaceFunction(source, 'omit', [
           '  function omit(object) {',
@@ -1412,6 +1405,11 @@
           '        result = [],',
           '        seen = result;',
           '',
+          "    if (typeof isSorted == 'function') {",
+          '      thisArg = callback;',
+          '      callback = isSorted;',
+          '      isSorted = false;',
+          '    }',
           '    if (callback) {',
           '      seen = [];',
           '      callback = createCallback(callback, thisArg);',
@@ -1437,7 +1435,7 @@
         // replace `_.uniqueId`
         source = replaceFunction(source, 'uniqueId', [
           '  function uniqueId(prefix) {',
-          '    var id = idCounter++;',
+          "    var id = ++idCounter + '';",
           '    return prefix ? prefix + id : id;',
           '  }'
         ].join('\n'));

test/test-build.js

@@ -679,7 +679,6 @@
 
         object = { 'length': 0, 'splice': Array.prototype.splice };
         equal(lodash.isEmpty(object), false, '_.isEmpty should return `false` for jQuery/MooTools DOM query collections: ' + basename);
-        equal(lodash.isFinite('2'), false, '_.isFinite should return `false` for numeric string values: ' + basename);
 
         object = { 'a': 1, 'b': 2, 'c': 3 };
         equal(lodash.isEqual(object, { 'a': 1, 'b': 0, 'c': 3 }), false, '_.isEqual: ' + basename);
@@ -697,10 +696,7 @@
 
         equal(lodash.some([false, true, false]), true, '_.some: ' + basename);
         equal(lodash.template('${a}', object), '${a}', '_.template should ignore ES6 delimiters: ' + basename);
-
-        actual = [lodash.uniqueId(3), lodash.uniqueId(2), lodash.uniqueId(1)];
-        equal(actual.join(','), '3,3,3', '_.uniqueId should not coerce the prefix argument to a string: ' + basename);
-        equal(typeof lodash.uniqueId(), 'number', '_.uniqueId should return a number value when not passing a prefix argument: ' + basename);
+        equal(lodash.uniqueId(0), '1', '_.uniqueId should ignore a prefix of `0`: ' + basename);
 
         var wrapped = lodash(1);
         equal(wrapped.clone() instanceof lodash, false, '_(...) wrapped values are not chainable by default: ' + basename);

vendor/underscore/underscore.js

@@ -1,4 +1,4 @@
-//     Underscore.js 1.4.2
+//     Underscore.js 1.4.3
 //     http://underscorejs.org
 //     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
 //     Underscore may be freely distributed under the MIT license.
@@ -24,7 +24,6 @@
   var push             = ArrayProto.push,
       slice            = ArrayProto.slice,
       concat           = ArrayProto.concat,
-      unshift          = ArrayProto.unshift,
       toString         = ObjProto.toString,
       hasOwnProperty   = ObjProto.hasOwnProperty;
 
@@ -65,7 +64,7 @@
   }
 
   // Current version.
-  _.VERSION = '1.4.2';
+  _.VERSION = '1.4.3';
 
   // Collection Functions
   // --------------------
@@ -102,6 +101,8 @@
     return results;
   };
 
+  var reduceError = 'Reduce of empty array with no initial value';
+
   // **Reduce** builds up a single result from a list of values, aka `inject`,
   // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
   _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
@@ -119,7 +120,7 @@
         memo = iterator.call(context, memo, value, index, list);
       }
     });
-    if (!initial) throw new TypeError('Reduce of empty array with no initial value');
+    if (!initial) throw new TypeError(reduceError);
     return memo;
   };
 
@@ -146,7 +147,7 @@
         memo = iterator.call(context, memo, obj[index], index, list);
       }
     });
-    if (!initial) throw new TypeError('Reduce of empty array with no initial value');
+    if (!initial) throw new TypeError(reduceError);
     return memo;
   };
 
@@ -239,7 +240,7 @@
     if (_.isEmpty(attrs)) return [];
     return _.filter(obj, function(value) {
       for (var key in attrs) {
-        if (_.has(attrs, key) && attrs[key] !== value[key]) return false;
+        if (attrs[key] !== value[key]) return false;
       }
       return true;
     });
@@ -336,7 +337,7 @@
   // either a string attribute to count by, or a function that returns the
   // criterion.
   _.countBy = function(obj, value, context) {
-    return group(obj, value, context, function(result, key, value) {
+    return group(obj, value, context, function(result, key) {
       if (!_.has(result, key)) result[key] = 0;
       result[key]++;
     });
@@ -961,7 +962,7 @@
 
   // Is a given object a finite number?
   _.isFinite = function(obj) {
-    return isFinite( obj ) && !isNaN( parseFloat(obj) );
+    return isFinite(obj) && !isNaN(parseFloat(obj));
   };
 
   // Is the given value `NaN`? (NaN is the only number which does not equal itself).