more debug

static/demos/light-dark-demo-4/sw.js

@@ -66,6 +66,7 @@ function toggleLightDark(transaction){
         grab.onerror = ()=>{console.error("grab error");res();};
         grab.onsuccess = (event)=>{
             const val = event.result;
+            console.log(val);
             if(val){
                 const yeet = obj_store.delete(1);
                 yeet.onsuccess = res;