Bump to v4.0.0.

chunk.js

@@ -0,0 +1,44 @@
+var baseSlice = require('./internal/baseSlice'),
+    toInteger = require('./toInteger');
+
+/* Built-in method references for those with the same name as other `lodash` methods. */
+var nativeCeil = Math.ceil,
+    nativeMax = Math.max;
+
+/**
+ * Creates an array of elements split into groups the length of `size`.
+ * If `array` 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=0] The length of each chunk.
+ * @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) {
+  size = nativeMax(toInteger(size), 0);
+
+  var length = array ? array.length : 0;
+  if (!length || size < 1) {
+    return [];
+  }
+  var index = 0,
+      resIndex = -1,
+      result = Array(nativeCeil(length / size));
+
+  while (index < length) {
+    result[++resIndex] = baseSlice(array, index, (index += size));
+  }
+  return result;
+}
+
+module.exports = chunk;