Initial commit.

src/utils/array-utils.ts

@@ -0,0 +1,6 @@
+export function getArrayDifference(oldArr: any[], newArr: any[]) {
+  const added = newArr.filter(e => !oldArr.includes(e));
+  const removed = oldArr.filter(e => !newArr.includes(e));
+
+  return { added, removed };
+}