--- /dev/null
+/*!
+ * array-unique <https://github.com/jonschlinkert/array-unique>
+ *
+ * Copyright (c) 2014-2015, Jon Schlinkert.
+ * Licensed under the MIT License.
+ */
+
+'use strict';
+
+module.exports = function unique(arr) {
+ if (!Array.isArray(arr)) {
+ throw new TypeError('array-unique expects an array.');
+ }
+
+ var len = arr.length;
+ var i = -1;
+
+ while (i++ < len) {
+ var j = i + 1;
+
+ for (; j < arr.length; ++j) {
+ if (arr[i] === arr[j]) {
+ arr.splice(j--, 1);
+ }
+ }
+ }
+ return arr;
+};