basic skeleton rewritten in reactjs

public/node_modules/workbox-precaching/utils/PrecacheCacheKeyPlugin.js

@@ -0,0 +1,30 @@
+/*
+  Copyright 2020 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 '../_version.js';
+/**
+ * A plugin, designed to be used with PrecacheController, to translate URLs into
+ * the corresponding cache key, based on the current revision info.
+ *
+ * @private
+ */
+class PrecacheCacheKeyPlugin {
+    constructor({ precacheController }) {
+        this.cacheKeyWillBeUsed = async ({ request, params, }) => {
+            // Params is type any, can't change right now.
+            /* eslint-disable */
+            const cacheKey = (params === null || params === void 0 ? void 0 : params.cacheKey) ||
+                this._precacheController.getCacheKeyForURL(request.url);
+            /* eslint-enable */
+            return cacheKey
+                ? new Request(cacheKey, { headers: request.headers })
+                : request;
+        };
+        this._precacheController = precacheController;
+    }
+}
+export { PrecacheCacheKeyPlugin };