Add Arry type including last

app/scripts/main.tsx

@@ -14,13 +14,14 @@ import { getAppURL } from '$utils/history';
 import LayoutRoot from '$components/common/layout-root';
 import { LayoutRootContextProvider } from '$components/common/layout-root/context';
 import { useScrollbarWidthAsCssVar } from '$utils/use-scrollbar-width-css';
-
 // Page loading
 import { PageLoading } from '$components/common/loading-skeleton';
 // Views
 import UhOh from '$components/uhoh';
 import ErrorBoundary from '$components/uhoh/fatal-error';
 
+import '$types/array';
+
 const Home = lazy(() => import('$components/home'));
 const About = lazy(() => import('$components/about'));
 const Development = lazy(() => import('$components/development'));

app/scripts/types/array.d.ts

@@ -0,0 +1,5 @@
+
+// Extend Array interface to include the last property
+interface Array<T> {
+  last: T | undefined;
+}