diff --git a/src/logic/utils/general-utils.ts b/src/logic/utils/general-utils.ts
new file mode 100644
index 0000000..13f6885
--- /dev/null
+++ b/src/logic/utils/general-utils.ts
@@ -0,0 +1,6 @@
+
+export function findLastIndex<T>(array: T[], callback: (v: T) => boolean): number
+{
+    let arr2 = array.slice().reverse();
+    return arr2.length - arr2.findIndex(callback);
+}