| 
					
				 | 
			
			
				@@ -29,14 +29,7 @@ export function createRouterGuards(router: Router) { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				     // console.log(to, '修改标题'); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				     // console.log('access token'); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				     document.title = to.meta.title ? to.meta.title : ('音乐数字课堂' as string); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				-    if ('serviceWorker' in navigator) { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				-      console.log(caches.keys(), 'caches.keys()'); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				-      caches.keys().then(function (cacheNames) { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				-        cacheNames.forEach(function (cacheName) { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				-          caches.delete(cacheName); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				-        }); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				-      }); 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				-    } 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				+ 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				     if (!isChrome()) { 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				       return; 
			 | 
		
	
		
			
				 | 
				 | 
			
			
				     } 
			 |