add some packages

node_modules/is-equal-shallow/index.js

@@ -0,0 +1,27 @@
+/*!
+ * is-equal-shallow <https://github.com/jonschlinkert/is-equal-shallow>
+ *
+ * Copyright (c) 2015, Jon Schlinkert.
+ * Licensed under the MIT License.
+ */
+
+'use strict';
+
+var isPrimitive = require('is-primitive');
+
+module.exports = function isEqual(a, b) {
+  if (!a && !b) { return true; }
+  if (!a && b || a && !b) { return false; }
+
+  var numKeysA = 0, numKeysB = 0, key;
+  for (key in b) {
+    numKeysB++;
+    if (!isPrimitive(b[key]) || !a.hasOwnProperty(key) || (a[key] !== b[key])) {
+      return false;
+    }
+  }
+  for (key in a) {
+    numKeysA++;
+  }
+  return numKeysA === numKeysB;
+};