Setting the type to number for log_lvl.

src/routes/idaa/(idaa)/bb/+page.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
 /** @type {import('./$types').PageData} */
 export let data: any;
-let log_lvl = 0;
+let log_lvl: number = 0;
 if (log_lvl) {
     console.log(`ae_idaa_bb +page.svelte data:`, data);
 }