--- a/backbone.shard.js	Thu Jul 05 09:23:39 2018 +0800
+++ b/backbone.shard.js	Thu Jul 05 09:23:57 2018 +0800
@@ -1,7 +1,7 @@
 /*
  *      backbone.shard.js.
  *
- *      (c) 2013-2017 Anton Shestakov.
+ *      (c) 2013-2018 Anton Shestakov.
  *
  *      This extension to Backbone may be freely distributed
  *      under the MIT license:
@@ -62,12 +62,13 @@
 
 // Underscore methods that we want to implement on the Shard.
 var methods = [
-    'all', 'any', 'chain', 'collect', 'contains', 'detect', 'difference',
-    'drop', 'each', 'every', 'filter', 'find', 'findIndex', 'findLastIndex',
-    'first', 'foldl', 'foldr', 'forEach', 'head', 'include', 'includes',
-    'indexOf', 'initial', 'inject', 'invoke', 'isEmpty', 'last', 'lastIndexOf',
-    'map', 'max', 'min', 'reduce', 'reduceRight', 'reject', 'rest', 'sample',
-    'select', 'shuffle', 'size', 'some', 'tail', 'take', 'toArray', 'without'
+    'all', 'any', 'chain', 'chunk', 'collect', 'contains', 'detect',
+    'difference', 'drop', 'each', 'every', 'filter', 'find', 'findIndex',
+    'findLastIndex', 'first', 'foldl', 'foldr', 'forEach', 'head', 'include',
+    'includes', 'indexOf', 'initial', 'inject', 'invoke', 'isEmpty', 'last',
+    'lastIndexOf', 'map', 'max', 'min', 'partition', 'reduce', 'reduceRight',
+    'reject', 'rest', 'sample', 'select', 'shuffle', 'size', 'some', 'tail',
+    'take', 'toArray', 'without'
 ];
 
 // Mix in each Underscore method as a proxy to `Shard#models`.

--- a/test/underscore-methods.js	Thu Jul 05 09:23:39 2018 +0800
+++ b/test/underscore-methods.js	Thu Jul 05 09:23:57 2018 +0800
@@ -34,6 +34,12 @@
         return model.get('data').charCodeAt(0) % 2;
     }), {0: [b], 1: [a, c]}, 'groupBy() works');
 
+    deepEqual(shard.partition(function(model) {
+        return model.get('data').charCodeAt(0) % 2;
+    }), [[a, c], [b]], 'partition() works');
+
+    deepEqual(shard.chunk(1), [[a], [b], [c]], 'chunk() works');
+
     deepEqual(shard.indexBy('data'), {a: a, b: b, c: c}, 'indexBy() works');
 
     var sh = shard.shuffle().reduce(function(memo, model) { return memo += model.get('data'); }, '');