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diff --git a/node_modules/workbox-precaching/models/PrecachedDetailsModel.mjs b/node_modules/workbox-precaching/models/PrecachedDetailsModel.mjs
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+/*
+  Copyright 2017 Google Inc.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+      https://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+*/
+
+import {DBWrapper} from 'workbox-core/_private/DBWrapper.mjs';
+import '../_version.mjs';
+
+// Allows minifier to mangle this name
+const REVISON_IDB_FIELD = 'revision';
+const URL_IDB_FIELD = 'url';
+const DB_STORE_NAME = 'precached-details-models';
+/**
+ * This model will track the relevant information of entries that
+ * are cached and their matching revision details.
+ *
+ * @private
+ */
+class PrecachedDetailsModel {
+  /**
+   * Construct a new model for a specific cache.
+   *
+   * @param {string} dbName
+   * @private
+   */
+  constructor(dbName) {
+    // This ensures the db name contains only letters, numbers, '-', '_' and '$'
+    const filteredDBName = dbName.replace(/[^\w-]/g, '_');
+    this._db = new DBWrapper(filteredDBName, 2, {
+      onupgradeneeded: this._handleUpgrade,
+    });
+  }
+
+  /**
+   * Should perform an upgrade of indexedDB.
+   *
+   * @param {Event} evt
+   *
+   * @private
+   */
+  _handleUpgrade(evt) {
+    const db = evt.target.result;
+    if (evt.oldVersion < 2) {
+      // IndexedDB version 1 used both 'workbox-precaching' and
+      // 'precached-details-model' before upgrading to version 2.
+      // Delete them and create a new store with latest schema.
+      if (db.objectStoreNames.contains('workbox-precaching')) {
+        db.deleteObjectStore('workbox-precaching');
+      }
+      if (db.objectStoreNames.contains(DB_STORE_NAME)) {
+        db.deleteObjectStore(DB_STORE_NAME);
+      }
+    }
+    db.createObjectStore(DB_STORE_NAME);
+  }
+
+  /**
+   * Check if an entry is already cached. Returns false if
+   * the entry isn't cached or the revision has changed.
+   *
+   * @param {string} cacheName
+   * @param {PrecacheEntry} precacheEntry
+   * @return {boolean}
+   *
+   * @private
+   */
+  async _isEntryCached(cacheName, precacheEntry) {
+    const revisionDetails = await this._getRevision(precacheEntry._entryId);
+    if (revisionDetails !== precacheEntry._revision) {
+      return false;
+    }
+
+    const openCache = await caches.open(cacheName);
+    const cachedResponse = await openCache.match(precacheEntry._cacheRequest);
+    return !!cachedResponse;
+  }
+
+  /**
+   * @return {Promise<Array>}
+   *
+   * @private
+   */
+  async _getAllEntries() {
+    return await this._db.getAllMatching(DB_STORE_NAME, {
+      includeKeys: true,
+    });
+  }
+
+  /**
+   * Get the current revision details.
+   *
+   * @param {Object} entryId
+   * @return {Promise<string|null>}
+   *
+   * @private
+   */
+  async _getRevision(entryId) {
+    const data = await this._db.get(DB_STORE_NAME, entryId);
+    return data ? data[REVISON_IDB_FIELD] : null;
+  }
+
+  /**
+   * Add an entry to the details model.
+   *
+   * @param {PrecacheEntry} precacheEntry
+   *
+   * @private
+   */
+  async _addEntry(precacheEntry) {
+    await this._db.put(
+      DB_STORE_NAME,
+      {
+        [REVISON_IDB_FIELD]: precacheEntry._revision,
+        [URL_IDB_FIELD]: precacheEntry._cacheRequest.url,
+      },
+      precacheEntry._entryId
+    );
+  }
+
+  /**
+   * Delete entry from details model.
+   *
+   * @param {string} entryId
+   *
+   * @private
+   */
+  async _deleteEntry(entryId) {
+    await this._db.delete(DB_STORE_NAME, entryId);
+  }
+}
+
+export default PrecachedDetailsModel;