#164 Replace lodash by custom deepEqual to reduce bundle size

package.json

@@ -39,7 +39,6 @@
     "not op_mini all"
   ],
   "dependencies": {
-    "lodash.isequal": "^4.5.0",
     "prop-types": "^15.6.0",
     "swipe-js-iso": "^2.1.5"
   },

src/deepEqual.js

@@ -0,0 +1,29 @@
+export default function deepEqual(a, b) {
+  if (a === b) {
+    return true;
+  }
+
+  if (
+    a === null ||
+    typeof a !== 'object' ||
+    b === null ||
+    typeof b !== 'object'
+  ) {
+    return false;
+  }
+
+  let keysA = Object.keys(a),
+    keysB = Object.keys(b);
+
+  if (keysA.length !== keysB.length) {
+    return false;
+  }
+
+  for (let key of keysA) {
+    if (!keysB.includes(key) || !deepEqual(a[key], b[key])) {
+      return false;
+    }
+  }
+
+  return true;
+}

src/index.js

@@ -1,7 +1,7 @@
 import PropTypes from 'prop-types';
 import React, { Component } from 'react';
 import Swipe from 'swipe-js-iso';
-import isEqual from 'lodash.isequal';
+import deepEqual from './deepEqual';
 
 class ReactSwipe extends Component {
   static propTypes = {
@@ -57,7 +57,7 @@ class ReactSwipe extends Component {
     const { childCount, swipeOptions } = this.props;
     const shouldUpdateSwipeInstance =
       prevProps.childCount !== childCount ||
-      !isEqual(prevProps.swipeOptions, swipeOptions);
+      !deepEqual(prevProps.swipeOptions, swipeOptions);
 
     if (shouldUpdateSwipeInstance) {
       this.swipe.kill();