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diff --git a/node_modules/workbox-build/src/entry-points/inject-manifest.js b/node_modules/workbox-build/src/entry-points/inject-manifest.js
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+++ b/node_modules/workbox-build/src/entry-points/inject-manifest.js
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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.
+*/
+
+const assert = require('assert');
+const fse = require('fs-extra');
+const path = require('path');
+
+const defaults = require('./options/defaults');
+const errors = require('../lib/errors');
+const getFileManifestEntries = require('../lib/get-file-manifest-entries');
+const injectManifestSchema = require('./options/inject-manifest-schema');
+const validate = require('./options/validate');
+
+/**
+ * This method creates a list of URLs to precache, referred to as a "precache
+ * manifest", based on the options you provide.
+ *
+ * The manifest is injected into the `swSrc` file, and the regular expression
+ * `injectionPointRegexp` determines where in the file the manifest should go.
+ *
+ * The final service worker file, with the manifest injected, is written to
+ * disk at `swDest`.
+ *
+ * @param {Object} config Please refer to the
+ * [configuration guide](https://developers.google.com/web/tools/workbox/modules/workbox-build#full_injectmanifest_config).
+ * @return {Promise<{count: number, size: number, warnings: Array<string>}>}
+ * A promise that resolves once the service worker file has been written to
+ * `swDest`. The `size` property contains the aggregate size of all the
+ * precached entries, in bytes, and the `count` property contains the total
+ * number of precached entries. Any non-fatal warning messages will be returned
+ * via `warnings`.
+ *
+ * @memberof module:workbox-build
+ */
+async function injectManifest(config) {
+  const options = validate(config, injectManifestSchema);
+
+  if (path.normalize(config.swSrc) === path.normalize(config.swDest)) {
+    throw new Error(errors['same-src-and-dest']);
+  }
+
+  const globalRegexp = new RegExp(options.injectionPointRegexp, 'g');
+
+  const {count, size, manifestEntries, warnings} =
+    await getFileManifestEntries(options);
+  let swFileContents;
+  try {
+    swFileContents = await fse.readFile(config.swSrc, 'utf8');
+  } catch (error) {
+    throw new Error(`${errors['invalid-sw-src']} ${error.message}`);
+  }
+
+  const injectionResults = swFileContents.match(globalRegexp);
+  assert(injectionResults, errors['injection-point-not-found'] +
+    // Customize the error message when this happens:
+    // - If the default RegExp is used, then include the expected string that
+    //   matches as a hint to the developer.
+    // - If a custom RegExp is used, then just include the raw RegExp.
+    (options.injectionPointRegexp === defaults.injectionPointRegexp ?
+      'workbox.precaching.precacheAndRoute([])' :
+      options.injectionPointRegexp));
+  assert(injectionResults.length === 1, errors['multiple-injection-points'] +
+    ` ${options.injectionPointRegexp}`);
+
+  const entriesString = JSON.stringify(manifestEntries, null, 2);
+  swFileContents = swFileContents.replace(globalRegexp, `$1${entriesString}$2`);
+
+  try {
+    await fse.mkdirp(path.dirname(options.swDest));
+  } catch (error) {
+    throw new Error(errors['unable-to-make-injection-directory'] +
+      ` '${error.message}'`);
+  }
+
+  await fse.writeFile(config.swDest, swFileContents);
+
+  return {count, size, warnings};
+}
+
+module.exports = injectManifest;