1 files changed, 10 insertions, 0 deletions
diff --git a/app/assets/javascripts/lib/utils/array_utility.js b/app/assets/javascripts/lib/utils/array_utility.js
index 197e7790ed7..04f9cb1cdb5 100644
--- a/app/assets/javascripts/lib/utils/array_utility.js
+++ b/app/assets/javascripts/lib/utils/array_utility.js
@@ -18,3 +18,13 @@ export const swapArrayItems = (array, leftIndex = 0, rightIndex = 0) => {
   copy[rightIndex] = temp;
   return copy;
 };
+
+/**
+ * Return an array with all duplicate items from the given array
+ *
+ * @param {Array} array - The source array
+ * @returns {Array} new array with all duplicate items
+ */
+export const getDuplicateItemsFromArray = (array) => [
+  ...new Set(array.filter((value, index) => array.indexOf(value) !== index)),
+];