更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/workbox-precaching/index.js

@@ -0,0 +1,34 @@
+/*
+  Copyright 2018 Google LLC
+
+  Use of this source code is governed by an MIT-style
+  license that can be found in the LICENSE file or at
+  https://opensource.org/licenses/MIT.
+*/
+import { addPlugins } from './addPlugins.js';
+import { addRoute } from './addRoute.js';
+import { cleanupOutdatedCaches } from './cleanupOutdatedCaches.js';
+import { createHandlerBoundToURL } from './createHandlerBoundToURL.js';
+import { getCacheKeyForURL } from './getCacheKeyForURL.js';
+import { matchPrecache } from './matchPrecache.js';
+import { precache } from './precache.js';
+import { precacheAndRoute } from './precacheAndRoute.js';
+import { PrecacheController } from './PrecacheController.js';
+import { PrecacheRoute } from './PrecacheRoute.js';
+import { PrecacheStrategy } from './PrecacheStrategy.js';
+import { PrecacheFallbackPlugin } from './PrecacheFallbackPlugin.js';
+import './_version.js';
+/**
+ * Most consumers of this module will want to use the
+ * {@link workbox-precaching.precacheAndRoute}
+ * method to add assets to the cache and respond to network requests with these
+ * cached assets.
+ *
+ * If you require more control over caching and routing, you can use the
+ * {@link workbox-precaching.PrecacheController}
+ * interface.
+ *
+ * @module workbox-precaching
+ */
+export { addPlugins, addRoute, cleanupOutdatedCaches, createHandlerBoundToURL, getCacheKeyForURL, matchPrecache, precache, precacheAndRoute, PrecacheController, PrecacheRoute, PrecacheStrategy, PrecacheFallbackPlugin, };
+export * from './_types.js';