--- /dev/null
+var baseSlice = require('../internal/baseSlice'),
+ isIterateeCall = require('../internal/isIterateeCall');
+
+/* Native method references for those with the same name as other `lodash` methods. */
+var nativeCeil = Math.ceil,
+ nativeFloor = Math.floor,
+ nativeMax = Math.max;
+
+/**
+ * Creates an array of elements split into groups the length of `size`.
+ * If `collection` can't be split evenly, the final chunk will be the remaining
+ * elements.
+ *
+ * @static
+ * @memberOf _
+ * @category Array
+ * @param {Array} array The array to process.
+ * @param {number} [size=1] The length of each chunk.
+ * @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
+ * @returns {Array} Returns the new array containing chunks.
+ * @example
+ *
+ * _.chunk(['a', 'b', 'c', 'd'], 2);
+ * // => [['a', 'b'], ['c', 'd']]
+ *
+ * _.chunk(['a', 'b', 'c', 'd'], 3);
+ * // => [['a', 'b', 'c'], ['d']]
+ */
+function chunk(array, size, guard) {
+ if (guard ? isIterateeCall(array, size, guard) : size == null) {
+ size = 1;
+ } else {
+ size = nativeMax(nativeFloor(size) || 1, 1);
+ }
+ var index = 0,
+ length = array ? array.length : 0,
+ resIndex = -1,
+ result = Array(nativeCeil(length / size));
+
+ while (index < length) {
+ result[++resIndex] = baseSlice(array, index, (index += size));
+ }
+ return result;
+}
+
+module.exports = chunk;