1 files changed, 32 insertions, 43 deletions
diff --git a/node_modules/arr-diff/index.js b/node_modules/arr-diff/index.js
index bc7200d8e..90f280772 100644
--- a/node_modules/arr-diff/index.js
+++ b/node_modules/arr-diff/index.js
@@ -1,58 +1,47 @@
 /*!
  * arr-diff <https://github.com/jonschlinkert/arr-diff>
  *
- * Copyright (c) 2014 Jon Schlinkert, contributors.
- * Licensed under the MIT License
+ * Copyright (c) 2014-2017, Jon Schlinkert.
+ * Released under the MIT License.
  */
 
 'use strict';
 
-var flatten = require('arr-flatten');
-var slice = [].slice;
+module.exports = function diff(arr/*, arrays*/) {
+  var len = arguments.length;
+  var idx = 0;
+  while (++idx < len) {
+    arr = diffArray(arr, arguments[idx]);
+  }
+  return arr;
+};
 
-/**
- * Return the difference between the first array and
- * additional arrays.
- *
- * ```js
- * var diff = require('{%= name %}');
- *
- * var a = ['a', 'b', 'c', 'd'];
- * var b = ['b', 'c'];
- *
- * console.log(diff(a, b))
- * //=> ['a', 'd']
- * ```
- *
- * @param  {Array} `a`
- * @param  {Array} `b`
- * @return {Array}
- * @api public
- */
+function diffArray(one, two) {
+  if (!Array.isArray(two)) {
+    return one.slice();
+  }
 
-function diff(arr, arrays) {
-  var argsLen = arguments.length;
-  var len = arr.length, i = -1;
-  var res = [], arrays;
+  var tlen = two.length
+  var olen = one.length;
+  var idx = -1;
+  var arr = [];
 
-  if (argsLen === 1) {
-    return arr;
-  }
+  while (++idx < olen) {
+    var ele = one[idx];
 
-  if (argsLen > 2) {
-    arrays = flatten(slice.call(arguments, 1));
-  }
+    var hasEle = false;
+    for (var i = 0; i < tlen; i++) {
+      var val = two[i];
+
+      if (ele === val) {
+        hasEle = true;
+        break;
+      }
+    }
 
-  while (++i < len) {
-    if (!~arrays.indexOf(arr[i])) {
-      res.push(arr[i]);
+    if (hasEle === false) {
+      arr.push(ele);
     }
   }
-  return res;
+  return arr;
 }
-
-/**
- * Expose `diff`
- */
-
-module.exports = diff;