Prevent errors in dimsFromTarget with empty target

index.html

@@ -813,96 +813,6 @@
             display:none;
           }
         }
-
-
-
-
-
-
-
-
-        .nav-items {
-  display: inline-block;
-  float: right;
-}
-
-.navbar {
-  background-color: #222;
-  color: #ddd;
-  min-height: 50px;
-  width: 100%;
-}
-
-.navbar-container {
-  max-width: 950px;
-  margin: 0 auto;
-  width: 95%;
-}
-
-.navbar-container::after {
-  content: "";
-  clear: both;
-  display: block;
-}
-
-.navbar-brand {
-  vertical-align: top;
-  display: inline-block;
-  padding: 5px;
-  min-height: 50px;
-  min-width: 50px;
-  color: inherit;
-  text-decoration: none;
-}
-
-.navbar-items {
-  padding: 10px 0;
-  display: block;
-  float: right;
-  margin: 0;
-}
-
-.navbar-item {
-  margin: 0;
-  color: inherit;
-  text-decoration: none;
-  display: inline-block;
-  padding: 10px 15px;
-}
-
-.burger {
-  margin: 10px 0;
-  width: 45px;
-  padding: 5px 10px;
-  display: none;
-  float: right;
-  cursor: pointer;
-}
-
-.burger-line {
-  padding: 1px;
-  background-color: white;
-  margin: 5px 0;
-}
-
-@media (max-width: 768px) {
-  .burger {
-    display: block;
-  }
-
-  .nav-items {
-    display: none;
-    width: 100%;
-  }
-
-  .navbar-items {
-    width: 100%;
-  }
-
-  .navbar-item {
-    display: block;
-  }
-}
       </style>
     </div>
 

src/utils/Sorter.js

@@ -484,6 +484,10 @@ module.exports = Backbone.View.extend({
   dimsFromTarget(target, rX, rY) {
     var dims = [];
 
+    if (!target) {
+      return dims;
+    }
+
     // Select the first valuable target
     if (!target.matches(`${this.itemSel}, ${this.containerSel}`)) {
       target = this.closest(target, this.itemSel);