#1: Replace lodash with underscore

Author: peterpeterparker

package.json

@@ -44,7 +44,7 @@
     "karma-coverage-istanbul-reporter": "^0.2.0",
     "karma-jasmine": "~1.1.0",
     "karma-jasmine-html-reporter": "^0.2.2",
-    "lodash": "^4.6.1",
+    "underscore": "^1.8.3",
     "node-watch": "^0.5.2",
     "protractor": "~5.1.0",
     "raf": "^3.1.0",

src/swing/card.ts

@@ -1,4 +1,5 @@
-import _ from 'lodash';
+import _ from 'underscore';
+
 import Sister from 'sister';
 import rebound from 'rebound';
 import vendorPrefix from 'vendor-prefix';

src/swing/stack.ts

@@ -1,4 +1,5 @@
-import _ from 'lodash';
+import _ from 'underscore';
+
 import Sister from 'sister';
 import rebound from 'rebound';
 
@@ -97,8 +98,8 @@ export const Stack = (config) => {
      * @returns {Card|null}
      */
     stack.getCard = (element) => {
-        const group = _.find(index, {
-            element
+        const group = _.find(index, (i) => {
+            return _.isEqual(i, element);
         });
 
         if (group) {

src/swing/utilities.ts

@@ -1,4 +1,4 @@
-import _ from 'lodash';
+import _ from 'underscore';
 
 /**
  * Return direct children elements.
@@ -8,8 +8,8 @@ import _ from 'lodash';
  * @returns {Array}
  */
 const elementChildren = (element) => {
-    return _.filter(element.childNodes, {
-        nodeType: 1
+    return _.filter(element.childNodes, (elem) => {
+        return elem.nodeType === 1;
     });
 };