allow correcting file transfer data if no files were received

dist/sw.js

@@ -22,7 +22,7 @@ async function getFromCache(event) {
 
 async function fetchAndCache(event) {
     const request = event.request;
-    const response = await fetch(request, {cache: "no-cache"});
+    const response = await fetch(request, { cache: "no-cache" });
     if (response.status === 200) {
         // Only cache successful responses
         const cache = await caches.open(CACHE_VERSION);