Allow statistics to handle date ibject or timestamp

src/routes/more/statistics/+page.svelte

@@ -1,4 +1,4 @@
-<script>
+<script lang="ts">
     import Island from "$lib/islands/island.svelte";
     import Header from "$lib/navigation/header.svelte";
     import Loading from "$lib/navigation/loading.svelte";
@@ -13,13 +13,16 @@
         return await res.json();
     }
 
-    function U2L(input) {
+    function U2L(input: Date|number): string {
+        if (input instanceof Date) {
+            return input.toLocaleString();
+        }
         try {
             const datetime = new Date(input * 1000);
             return datetime.toLocaleString();
         } catch (err) {
             console.log(err);
-            return false;
+            return "Unknown";
         }
     }
 </script>