diff --git a/gulp/service-worker-dev.js.tmpl b/gulp/service-worker-dev.js.tmpl
deleted file mode 100644
index 7fae2a7508..0000000000
--- a/gulp/service-worker-dev.js.tmpl
+++ /dev/null
@@ -1,8 +0,0 @@
-console.warn('Service worker caching disabled in development');
-self.addEventListener('install', function(event) {
-  self.skipWaiting();
-});
-
-self.addEventListener('activate', function(event) {
-  self.clients.claim();
-});
diff --git a/gulp/service-worker.js.tmpl b/gulp/service-worker.js.tmpl
deleted file mode 100644
index d58a4683fa..0000000000
--- a/gulp/service-worker.js.tmpl
+++ /dev/null
@@ -1,77 +0,0 @@
-self.addEventListener("push", function(event) {
-  var data;
-  if (event.data) {
-    data = event.data.json();
-    event.waitUntil(
-      self.registration.showNotification(data.title, data)
-      .then(function(notification){
-        firePushCallback({
-          type: "received",
-          tag: data.tag,
-          data: data.data
-        }, data.data.jwt);
-      })
-    );
-  }
-});
-self.addEventListener('notificationclick', function(event) {
-  var url;
-
-  notificationEventCallback('clicked', event);
-
-  event.notification.close();
-
-  if (!event.notification.data || !event.notification.data.url) {
-    return;
-  }
-
-  url = event.notification.data.url;
-
-  if (!url) return;
-
-  event.waitUntil(
-    clients.matchAll({
-      type: 'window',
-    })
-    .then(function (windowClients) {
-      var i;
-      var client;
-      for (i = 0; i < windowClients.length; i++) {
-        client = windowClients[i];
-        if (client.url === url && 'focus' in client) {
-            return client.focus();
-        }
-      }
-      if (clients.openWindow) {
-        return clients.openWindow(url);
-      }
-      return undefined;
-    })
-  );
-});
-self.addEventListener('notificationclose', function(event) {
-  notificationEventCallback('closed', event);
-});
-
-function notificationEventCallback(event_type, event){
-  firePushCallback({
-    action: event.action,
-    data: event.notification.data,
-    tag: event.notification.tag,
-    type: event_type
-  }, event.notification.data.jwt);
-}
-function firePushCallback(payload, jwt){
-  // Don't send the JWT in the payload.data
-  delete payload.data.jwt;
-  // If payload.data is empty then just remove the entire payload.data object.
-  if (Object.keys(payload.data).length === 0 && payload.data.constructor === Object) {
-    delete payload.data;
-  }
-  fetch('/api/notify.html5/callback', {
-    method: 'POST',
-    headers: new Headers({'Content-Type': 'application/json',
-                          'Authorization': 'Bearer '+jwt}),
-    body: JSON.stringify(payload)
-  });
-}
diff --git a/gulp/tasks/gen-service-worker.js b/gulp/tasks/gen-service-worker.js
deleted file mode 100755
index 2d3c3ba850..0000000000
--- a/gulp/tasks/gen-service-worker.js
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
-Generate a caching service worker for HA
-
-Will be called as part of build_frontend.
-
-Creates a caching service worker based on the built content of the repo in
-{hass_frontend, hass_frontend_es6}.
-Output service worker to {build, build-es6}/service_worker.js
-
-TODO:
- - Use gulp streams
- - Fix minifying the stream
-*/
-const gulp = require('gulp');
-const file = require('gulp-file');
-const fs = require('fs');
-const path = require('path');
-const swPrecache = require('sw-precache');
-const md5 = require('../common/md5.js');
-
-const DEV = !!JSON.parse(process.env.BUILD_DEV || 'true');
-
-const dynamicUrlToDependencies = {};
-
-const staticFingerprinted = [
-  'mdi.html',
-  'translations/en.json',
-];
-
-const staticFingerprintedEs6 = [
-  'core.js',
-  'app.js',
-];
-
-const staticFingerprintedEs5 = [
-  'compatibility.js',
-  'core.js',
-  'app.js',
-];
-
-function processStatic(fn, rootDir, urlDir) {
-  const parts = path.parse(fn);
-  const base = parts.dir.length > 0 ? parts.dir + '/' + parts.name : parts.name;
-  const hash = md5(rootDir + '/' + base + parts.ext);
-  const url = '/' + urlDir + '/' + base + '-' + hash + parts.ext;
-  const fpath = rootDir + '/' + base + parts.ext;
-  dynamicUrlToDependencies[url] = [fpath];
-}
-
-function generateServiceWorker(es6) {
-  let genPromise = null;
-  const baseRootDir = 'hass_frontend';
-  const rootDir = es6 ? baseRootDir : 'hass_frontend_es5';
-  const panelDir = path.resolve(rootDir, 'panels');
-
-  if (DEV) {
-    genPromise = Promise.resolve(fs.readFileSync(path.resolve(__dirname, '../service-worker-dev.js.tmpl'), 'UTF-8'));
-  } else {
-    // Create fingerprinted versions of our dependencies.
-    (es6 ? staticFingerprintedEs6 : staticFingerprintedEs5).forEach(fn => processStatic(fn, rootDir, es6 ? 'frontend_latest' : 'frontend_es5'));
-    staticFingerprinted.forEach(fn => processStatic(fn, baseRootDir, 'static'));
-
-    panelsFingerprinted.forEach((panel) => {
-      const fpath = panelDir + '/ha-panel-' + panel + '.html';
-      const hash = md5(fpath);
-      const url = '/' + (es6 ? 'frontend_latest' : 'frontend_es5') + '/panels/ha-panel-' + panel + '-' + hash + '.html';
-      dynamicUrlToDependencies[url] = [fpath];
-    });
-
-    const options = {
-      directoryIndex: '',
-      dynamicUrlToDependencies: dynamicUrlToDependencies,
-      staticFileGlobs: [
-        baseRootDir + '/icons/favicon.ico',
-        baseRootDir + '/icons/favicon-192x192.png',
-        baseRootDir + '/webcomponents-lite.min.js',
-        baseRootDir + '/fonts/roboto/Roboto-Light.ttf',
-        baseRootDir + '/fonts/roboto/Roboto-Medium.ttf',
-        baseRootDir + '/fonts/roboto/Roboto-Regular.ttf',
-        baseRootDir + '/fonts/roboto/Roboto-Bold.ttf',
-        baseRootDir + '/images/card_media_player_bg.png',
-      ],
-      // Rules are proceeded in order and negative per-domain rules are not supported.
-      runtimeCaching: [
-        { // Cache static content (including translations) on first access.
-          urlPattern: '/(static|frontend_latest|frontend_es5)/*',
-          handler: 'cacheFirst',
-        },
-        { // Get api (and home-assistant-polymer in dev mode) from network.
-          urlPattern: '/(home-assistant-polymer|api)/*',
-          handler: 'networkOnly',
-        },
-        { // Get manifest and service worker from network.
-          urlPattern: '/(service_worker.js|service_worker_es5.js|manifest.json)',
-          handler: 'networkOnly',
-        },
-        { // For rest of the files (on Home Assistant domain only) try both cache and network.
-          // This includes the root "/" or "/states" response and user files from "/local".
-          // First access might bring stale data from cache, but a single refresh will bring updated
-          // file.
-          urlPattern: '*',
-          handler: 'fastest',
-        }
-      ],
-      stripPrefix: baseRootDir,
-      replacePrefix: '/static',
-      verbose: true,
-      // Allow our users to refresh to get latest version.
-      clientsClaim: true,
-    };
-
-    genPromise = swPrecache.generate(options);
-  }
-
-  const swHass = fs.readFileSync(path.resolve(__dirname, '../service-worker.js.tmpl'), 'UTF-8');
-
-  // Fix this
-  // if (!DEV) {
-  //   genPromise = genPromise.then(
-  //     swString => uglifyJS.minify(swString, { fromString: true }).code);
-  // }
-
-  return genPromise.then(swString => swString + '\n' + swHass + '\n' + (es6 ? '//es6' : '//es5'))
-    .then(swString => file('service_worker.js', swString)
-      .pipe(gulp.dest(es6 ? 'build' : 'build-es5')));
-}
-
-gulp.task('gen-service-worker-es5', generateServiceWorker.bind(null, /* es6= */ false));
-gulp.task('gen-service-worker', generateServiceWorker.bind(null, /* es6= */ true));
diff --git a/package.json b/package.json
index b865693814..b55fcc0726 100644
--- a/package.json
+++ b/package.json
@@ -140,7 +140,8 @@
     "wct-browser-legacy": "^1.0.0",
     "web-component-tester": "^6.6.0",
     "webpack": "^4.8.1",
-    "webpack-cli": "^2.1.3"
+    "webpack-cli": "^2.1.3",
+    "workbox-webpack-plugin": "^3.2.0"
   },
   "resolutions": {
     "inherits": "2.0.3",
diff --git a/script/develop b/script/develop
index 76afd860ad..fb28cd4af4 100755
--- a/script/develop
+++ b/script/develop
@@ -17,7 +17,4 @@ cp -r public/__init__.py $OUTPUT_DIR_ES5/
 ./node_modules/.bin/gulp build-translations gen-icons
 cp src/authorize.html $OUTPUT_DIR
 
-# Manually copy over this file as we don't run the ES5 build
-cp node_modules/@webcomponents/webcomponentsjs/webcomponents-bundle.js.map $OUTPUT_DIR
-
 ./node_modules/.bin/webpack --watch --progress
diff --git a/src/entrypoints/service-worker-bootstrap.js b/src/entrypoints/service-worker-bootstrap.js
new file mode 100644
index 0000000000..5f8ff19a8d
--- /dev/null
+++ b/src/entrypoints/service-worker-bootstrap.js
@@ -0,0 +1,2 @@
+/* global importScripts */
+importScripts('/static/service-worker-hass.js');
diff --git a/src/entrypoints/service-worker-hass.js b/src/entrypoints/service-worker-hass.js
new file mode 100644
index 0000000000..f8edefa27c
--- /dev/null
+++ b/src/entrypoints/service-worker-hass.js
@@ -0,0 +1,124 @@
+/* global workbox clients */
+
+function initRouting() {
+  workbox.precaching.precacheAndRoute(self.__precacheManifest || []);
+
+  // Cache static content (including translations) on first access.
+  workbox.routing.registerRoute(
+    new RegExp(`${location.host}/(static|frontend_latest|frontend_es5)/.+`),
+    workbox.strategies.cacheFirst()
+  );
+
+  // Get api from network.
+  workbox.routing.registerRoute(
+    new RegExp(`${location.host}/api/.*`),
+    workbox.strategies.networkOnly()
+  );
+
+  // Get manifest and service worker from network.
+  workbox.routing.registerRoute(
+    new RegExp(`${location.host}/(service_worker.js|service_worker_es5.js|manifest.json)`),
+    workbox.strategies.networkOnly()
+  );
+
+  // For rest of the files (on Home Assistant domain only) try both cache and network.
+  // This includes the root "/" or "/states" response and user files from "/local".
+  // First access might bring stale data from cache, but a single refresh will bring updated
+  // file.
+  workbox.routing.registerRoute(
+    new RegExp(`${location.host}/.*`),
+    workbox.strategies.staleWhileRevalidate()
+  );
+}
+
+function initPushNotifications() {
+  // HTML5 Push Notifications
+  function firePushCallback(payload, jwt) {
+    // Don't send the JWT in the payload.data
+    delete payload.data.jwt;
+    // If payload.data is empty then just remove the entire payload.data object.
+    if (Object.keys(payload.data).length === 0 && payload.data.constructor === Object) {
+      delete payload.data;
+    }
+    fetch('/api/notify.html5/callback', {
+      method: 'POST',
+      headers: new Headers({ 'Content-Type': 'application/json',
+        Authorization: 'Bearer ' + jwt }),
+      body: JSON.stringify(payload)
+    });
+  }
+
+  function notificationEventCallback(eventType, event) {
+    firePushCallback({
+      action: event.action,
+      data: event.notification.data,
+      tag: event.notification.tag,
+      type: eventType
+    }, event.notification.data.jwt);
+  }
+
+  self.addEventListener('push', function (event) {
+    var data;
+    if (event.data) {
+      data = event.data.json();
+      event.waitUntil(self.registration.showNotification(data.title, data)
+        .then(function (/* notification */) {
+          firePushCallback({
+            type: 'received',
+            tag: data.tag,
+            data: data.data
+          }, data.data.jwt);
+        }));
+    }
+  });
+
+  self.addEventListener('notificationclick', function (event) {
+    var url;
+
+    notificationEventCallback('clicked', event);
+
+    event.notification.close();
+
+    if (!event.notification.data || !event.notification.data.url) {
+      return;
+    }
+
+    url = event.notification.data.url;
+
+    if (!url) return;
+
+    event.waitUntil(clients.matchAll({
+      type: 'window',
+    })
+      .then(function (windowClients) {
+        var i;
+        var client;
+        for (i = 0; i < windowClients.length; i++) {
+          client = windowClients[i];
+          if (client.url === url && 'focus' in client) {
+            return client.focus();
+          }
+        }
+        if (clients.openWindow) {
+          return clients.openWindow(url);
+        }
+        return undefined;
+      }));
+  });
+
+  self.addEventListener('notificationclose', function (event) {
+    notificationEventCallback('closed', event);
+  });
+}
+
+workbox.setConfig({
+  debug: __DEV__
+});
+workbox.skipWaiting();
+workbox.clientsClaim();
+
+if (!__DEV__) {
+  initRouting();
+}
+
+initPushNotifications();
diff --git a/src/util/custom-panel/load-custom-panel.js b/src/util/custom-panel/load-custom-panel.js
index 2a86fd0450..56fbeca86a 100644
--- a/src/util/custom-panel/load-custom-panel.js
+++ b/src/util/custom-panel/load-custom-panel.js
@@ -6,8 +6,8 @@ const JS_CACHE = {};
 export default function loadCustomPanel(panelConfig) {
   if ('html_url' in panelConfig) {
     return Promise.all([
-      import('../legacy-support.js'),
-      import('../../resources/html-import/import-href.js'),
+      import(/* webpackChunkName: "legacy-support" */ '../legacy-support.js'),
+      import(/* webpackChunkName: "import-href-polyfill" */ '../../resources/html-import/import-href.js'),
     // eslint-disable-next-line
     ]).then(([{}, { importHrefPromise }]) => importHrefPromise(panelConfig.html_url));
   } else if (panelConfig.js_url) {
diff --git a/webpack.config.js b/webpack.config.js
index 7c7e42c44e..444979a266 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -3,6 +3,8 @@ const path = require('path');
 const webpack = require('webpack');
 const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
 const CopyWebpackPlugin = require('copy-webpack-plugin');
+const WorkboxPlugin = require('workbox-webpack-plugin');
+const translationMetadata = require('./build-translations/translationMetadata.json');
 
 const version = fs.readFileSync('setup.py', 'utf8').match(/\d{8}[^']*/);
 if (!version) {
@@ -34,9 +36,7 @@ function createConfig(isProdBuild, latestBuild) {
     ],
   };
 
-  const copyPluginOpts = [
-    { from: 'gulp/service-worker.js.tmpl', to: 'service_worker.js' },
-  ];
+  const copyPluginOpts = [];
 
   const plugins = [
     new webpack.DefinePlugin({
@@ -64,10 +64,12 @@ function createConfig(isProdBuild, latestBuild) {
     copyPluginOpts.push({ from: 'build-translations/output', to: `translations` });
     copyPluginOpts.push({ from: 'node_modules/@polymer/font-roboto-local/fonts', to: 'fonts' });
     copyPluginOpts.push('node_modules/@webcomponents/webcomponentsjs/webcomponents-bundle.js')
+    copyPluginOpts.push('node_modules/@webcomponents/webcomponentsjs/webcomponents-bundle.js.map')
     copyPluginOpts.push({ from: 'node_modules/leaflet/dist/leaflet.css', to: `images/leaflet/` });
     copyPluginOpts.push({ from: 'node_modules/leaflet/dist/images', to: `images/leaflet/` });
     copyPluginOpts.push('node_modules/@webcomponents/webcomponentsjs/custom-elements-es5-adapter.js');
     entry['hass-icons'] = './src/entrypoints/hass-icons.js';
+    entry['service-worker-hass'] = './src/entrypoints/service-worker-hass.js';
   } else {
     babelOptions.presets = [
       ['es2015', { modules: false }]
@@ -86,6 +88,46 @@ function createConfig(isProdBuild, latestBuild) {
     }));
   }
 
+  plugins.push(new WorkboxPlugin.InjectManifest({
+    swSrc: './src/entrypoints/service-worker-bootstrap.js',
+    swDest: 'service_worker.js',
+    importWorkboxFrom: 'local',
+    include: [
+      /core.js$/,
+      /app.js$/,
+      /custom-panel.js$/,
+      /hass-icons.js$/,
+      /\.chunk\.js$/,
+    ],
+    // Static assets get cached during runtime. But these we want to explicetely cache
+    // Need to be done using templatedUrls because prefix is /static
+    globDirectory: '.',
+    globIgnores: [],
+    modifyUrlPrefix: {
+      'hass_frontend': '/static'
+    },
+    templatedUrls: {
+      [`/static/translations/${translationMetadata['translations']['en']['fingerprints']['en']}`]: [
+        'build-translations/output/en.json'
+      ],
+      '/static/icons/favicon-192x192.png': [
+        'public/icons/favicon-192x192.png'
+      ],
+      '/static/fonts/roboto/Roboto-Light.ttf': [
+        'node_modules/@polymer/font-roboto-local/fonts/roboto/Roboto-Light.ttf'
+      ],
+      '/static/fonts/roboto/Roboto-Medium.ttf': [
+        'node_modules/@polymer/font-roboto-local/fonts/roboto/Roboto-Medium.ttf'
+      ],
+      '/static/fonts/roboto/Roboto-Regular.ttf': [
+        'node_modules/@polymer/font-roboto-local/fonts/roboto/Roboto-Regular.ttf'
+      ],
+      '/static/fonts/roboto/Roboto-Bold.ttf': [
+        'node_modules/@polymer/font-roboto-local/fonts/roboto/Roboto-Bold.ttf'
+      ],
+    }
+  }));
+
   const chunkFilename = isProdBuild ?
     '[chunkhash].chunk.js' : '[name].chunk.js';
 
diff --git a/yarn.lock b/yarn.lock
index 012355a5b2..e9286e50a2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4124,6 +4124,10 @@ commander@~2.13.0:
   version "2.13.0"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.13.0.tgz#6964bca67685df7c1f1430c584f07d7597885b9c"
 
+common-tags@^1.4.0:
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/common-tags/-/common-tags-1.8.0.tgz#8e3153e542d4a39e9b10554434afaaf98956a937"
+
 commondir@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/commondir/-/commondir-1.0.1.tgz#ddd800da0c66127393cca5950ea968a3aaf1253b"
@@ -5829,6 +5833,14 @@ fs-exists-sync@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/fs-exists-sync/-/fs-exists-sync-0.1.0.tgz#982d6893af918e72d08dec9e8673ff2b5a8d6add"
 
+fs-extra@^4.0.2:
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/fs-extra/-/fs-extra-4.0.3.tgz#0d852122e5bc5beb453fb028e9c0c9bf36340c94"
+  dependencies:
+    graceful-fs "^4.1.2"
+    jsonfile "^4.0.0"
+    universalify "^0.1.0"
+
 fs-minipass@^1.2.5:
   version "1.2.5"
   resolved "https://registry.yarnpkg.com/fs-minipass/-/fs-minipass-1.2.5.tgz#06c277218454ec288df77ada54a03b8702aacb9d"
@@ -6301,7 +6313,7 @@ graceful-fs@^3.0.0:
   dependencies:
     natives "^1.1.0"
 
-graceful-fs@^4.0.0, graceful-fs@^4.1.0, graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.3:
+graceful-fs@^4.0.0, graceful-fs@^4.1.0, graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.3, graceful-fs@^4.1.6:
   version "4.1.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
@@ -7429,6 +7441,12 @@ isbinaryfile@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/isbinaryfile/-/isbinaryfile-3.0.2.tgz#4a3e974ec0cba9004d3fc6cde7209ea69368a621"
 
+isemail@3.x.x:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/isemail/-/isemail-3.1.2.tgz#937cf919002077999a73ea8b1951d590e84e01dd"
+  dependencies:
+    punycode "2.x.x"
+
 isexe@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/isexe/-/isexe-2.0.0.tgz#e8fbf374dc556ff8947a10dcb0572d633f2cfa10"
@@ -7469,6 +7487,14 @@ isurl@^1.0.0-alpha5:
     has-to-string-tag-x "^1.2.0"
     is-object "^1.0.1"
 
+joi@^11.1.1:
+  version "11.4.0"
+  resolved "https://registry.yarnpkg.com/joi/-/joi-11.4.0.tgz#f674897537b625e9ac3d0b7e1604c828ad913ccb"
+  dependencies:
+    hoek "4.x.x"
+    isemail "3.x.x"
+    topo "2.x.x"
+
 js-tokens@^3.0.0, js-tokens@^3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-3.0.2.tgz#9866df395102130e38f7f996bceb65443209c25b"
@@ -7574,6 +7600,12 @@ json5@^0.5.0, json5@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
 
+jsonfile@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
+  optionalDependencies:
+    graceful-fs "^4.1.6"
+
 jsonify@~0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/jsonify/-/jsonify-0.0.0.tgz#2c74b6ee41d93ca51b7b5aaee8f503631d252a73"
@@ -10023,14 +10055,14 @@ punycode@1.3.2:
   version "1.3.2"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.3.2.tgz#9653a036fb7c1ee42342f2325cceefea3926c48d"
 
+punycode@2.x.x, punycode@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
+
 punycode@^1.2.4, punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
 
-punycode@^2.1.0:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
-
 q@1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/q/-/q-1.4.1.tgz#55705bcd93c5f3673530c2c2cbc0c2b3addc286e"
@@ -11890,6 +11922,12 @@ to-regex@^3.0.1, to-regex@^3.0.2:
     regex-not "^1.0.2"
     safe-regex "^1.1.0"
 
+topo@2.x.x:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/topo/-/topo-2.0.2.tgz#cd5615752539057c0dc0491a621c3bc6fbe1d182"
+  dependencies:
+    hoek "4.x.x"
+
 tough-cookie@~2.3.0, tough-cookie@~2.3.3:
   version "2.3.4"
   resolved "https://registry.yarnpkg.com/tough-cookie/-/tough-cookie-2.3.4.tgz#ec60cee38ac675063ffc97a5c18970578ee83655"
@@ -12117,6 +12155,10 @@ unique-string@^1.0.0:
   dependencies:
     crypto-random-string "^1.0.0"
 
+universalify@^0.1.0:
+  version "0.1.1"
+  resolved "https://registry.yarnpkg.com/universalify/-/universalify-0.1.1.tgz#fa71badd4437af4c148841e3b3b165f9e9e590b7"
+
 unpipe@1.0.0, unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"
@@ -12718,6 +12760,108 @@ wordwrapjs@^3.0.0:
     reduce-flatten "^1.0.1"
     typical "^2.6.1"
 
+workbox-background-sync@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-background-sync/-/workbox-background-sync-3.2.0.tgz#08d4f79fb82fb61f72fbd0359c4b616cc75612d4"
+  dependencies:
+    workbox-core "^3.2.0"
+
+workbox-broadcast-cache-update@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-broadcast-cache-update/-/workbox-broadcast-cache-update-3.2.0.tgz#65b4d9b3d4594751ab7ce1fee905c08214118fdc"
+  dependencies:
+    workbox-core "^3.2.0"
+
+workbox-build@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-build/-/workbox-build-3.2.0.tgz#01f4a4f6fb5a94dadd3f86d04480c84578fa1125"
+  dependencies:
+    babel-runtime "^6.26.0"
+    common-tags "^1.4.0"
+    fs-extra "^4.0.2"
+    glob "^7.1.2"
+    joi "^11.1.1"
+    lodash.template "^4.4.0"
+    pretty-bytes "^4.0.2"
+    workbox-background-sync "^3.2.0"
+    workbox-broadcast-cache-update "^3.2.0"
+    workbox-cache-expiration "^3.2.0"
+    workbox-cacheable-response "^3.2.0"
+    workbox-core "^3.2.0"
+    workbox-google-analytics "^3.2.0"
+    workbox-precaching "^3.2.0"
+    workbox-range-requests "^3.2.0"
+    workbox-routing "^3.2.0"
+    workbox-strategies "^3.2.0"
+    workbox-streams "^3.2.0"
+    workbox-sw "^3.2.0"
+
+workbox-cache-expiration@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-cache-expiration/-/workbox-cache-expiration-3.2.0.tgz#a585761fd5438e439668afc6f862ac5a0ebca1a8"
+  dependencies:
+    workbox-core "^3.2.0"
+
+workbox-cacheable-response@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-cacheable-response/-/workbox-cacheable-response-3.2.0.tgz#1d8e3d437d60fb80d971d79545bb27acf1fe7653"
+  dependencies:
+    workbox-core "^3.2.0"
+
+workbox-core@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-core/-/workbox-core-3.2.0.tgz#d1bd4209447f5350d8dd6b964c86f054c96ffa0a"
+
+workbox-google-analytics@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-google-analytics/-/workbox-google-analytics-3.2.0.tgz#1005bc71ae03a8948b687896235dafecb1696c46"
+  dependencies:
+    workbox-background-sync "^3.2.0"
+    workbox-core "^3.2.0"
+    workbox-routing "^3.2.0"
+    workbox-strategies "^3.2.0"
+
+workbox-precaching@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-precaching/-/workbox-precaching-3.2.0.tgz#36568687a5615d8bd4191b38cf0f489a992d7bbc"
+  dependencies:
+    workbox-core "^3.2.0"
+
+workbox-range-requests@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-range-requests/-/workbox-range-requests-3.2.0.tgz#5d6cc3621cef0951fc9c0549053f8e117736d321"
+  dependencies:
+    workbox-core "^3.2.0"
+
+workbox-routing@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-routing/-/workbox-routing-3.2.0.tgz#6aef7622ede2412dd116231f4f9408a6485a4832"
+  dependencies:
+    workbox-core "^3.2.0"
+
+workbox-strategies@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-strategies/-/workbox-strategies-3.2.0.tgz#6cd5f00739764872b77b4c3766a606e43eb7d246"
+  dependencies:
+    workbox-core "^3.2.0"
+
+workbox-streams@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-streams/-/workbox-streams-3.2.0.tgz#cac0e4f5693b5e13029cbd7e5fec4eb7fcb30d97"
+  dependencies:
+    workbox-core "^3.2.0"
+
+workbox-sw@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-sw/-/workbox-sw-3.2.0.tgz#ccda9adff557ba2233bf1837229144b4a86276cb"
+
+workbox-webpack-plugin@^3.2.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/workbox-webpack-plugin/-/workbox-webpack-plugin-3.2.0.tgz#eab74294e88d86f4356a5dbac98cd803b22142b3"
+  dependencies:
+    json-stable-stringify "^1.0.1"
+    workbox-build "^3.2.0"
+
 worker-farm@^1.5.2:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/worker-farm/-/worker-farm-1.6.0.tgz#aecc405976fab5a95526180846f0dba288f3a4a0"