Making periodic Synchronisation

public/serviceworker.js

@@ -48,19 +48,12 @@ var Types;
     Types[Types["REFRESH"] = 2] = "REFRESH";
 })(Types || (Types = {}));
 
-let rules = [
-    {
+let rules = [{
         match: (url) => {
             return url.indexOf("/api/") >= 0;
         },
         type: Types.NOCACHE
     },
-    {
-        match: (url) => {
-            return url.indexOf("/version_hash") >= 0;
-        },
-        type: Types.NOCACHE
-    },
     {
         match: () => {
             return true;
@@ -79,7 +72,7 @@ self.addEventListener('fetch', (evt) => {
                 return fromCache(evt.request);
             case Types.REFRESH:
                 return refresh(evt.request).then(r => {
-                    evt.waitUntil(r.refresh.catch(_ => { }));
+                    evt.waitUntil(r.refresh.catch(_ => {}));
                     return r.result;
                 });
             case Types.NOCACHE:
@@ -95,7 +88,12 @@ async function fromCache(request) {
         return matching
 
     let res = await fetch(request.clone());
-    await cache.put(request, res);
+    await cache.put(request, {
+        match: (url) => {
+            return url.indexOf("/version_hash") >= 0;
+        },
+        type: Types.NOCACHE
+    }, res);
     return await cache.match(request);
 }
 

src/notes.ts

@@ -167,7 +167,7 @@ class NotesProvider {
    public async start() {
       const next = () => {
          setTimeout(() => {
-            this.sync().then(() => next);
+            this.sync().then(next);
          }, 30000)
       }
       this.syncedObservableServer.send((await this.oplogDB.getAll()).length <= 0);