PWA

node_modules/workbox-build/src/lib/get-composite-details.ts

@@ -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 crypto from 'crypto';
+
+import {FileDetails} from '../types';
+
+export function getCompositeDetails(
+  compositeURL: string,
+  dependencyDetails: Array<FileDetails>,
+): FileDetails {
+  let totalSize = 0;
+  let compositeHash = '';
+
+  for (const fileDetails of dependencyDetails) {
+    totalSize += fileDetails.size;
+    compositeHash += fileDetails.hash;
+  }
+
+  const md5 = crypto.createHash('md5');
+  md5.update(compositeHash);
+  const hashOfHashes = md5.digest('hex');
+
+  return {
+    file: compositeURL,
+    hash: hashOfHashes,
+    size: totalSize,
+  };
+}