tests fixed (NodeJS is crap)

__tests__/service-worker.test.js

@@ -968,6 +968,7 @@ describe("service-worker", () => {
                                 })]
                     }
                   })
+    await new Promise(resolve => resolve(true))
     
     expect (await caches.open('v1').then((cache)=>{
                 return cache.keys()
@@ -1130,6 +1131,7 @@ describe("service-worker", () => {
                                 })]
                     }
                   })
+    await new Promise(resolve => resolve(true))
     
     expect (await caches.open('v1').then((cache)=>{
                 return cache.keys()