Upgraded dependencies

.babelrc

@@ -1,6 +1,6 @@
 {
-  "presets": ["es2015"],
+  "presets": ["env"],
   // Remove the line below to enable ES2015 support.
-  "only": "gulpfile.babel.js",
+  // "only": "gulpfile.babel.js",
   "retainLines": true
 }

.travis.yml

@@ -1,7 +1,8 @@
 sudo: false
 language: node_js
 node_js:
+  - '8'
+  - '7'
   - '6'
   - '5'
   - '4'
-  - '0.12'

app/scripts/main.js

@@ -1,4 +1,4 @@
-/*!
+/**
  *
  *  Web Starter Kit
  *  Copyright 2015 Google Inc. All rights reserved.
@@ -24,7 +24,7 @@
   // and that the current page is accessed from a secure origin. Using a
   // service worker from an insecure origin will trigger JS console errors. See
   // http://www.chromium.org/Home/chromium-security/prefer-secure-origins-for-powerful-new-features
-  var isLocalhost = Boolean(window.location.hostname === 'localhost' ||
+  const isLocalhost = Boolean(window.location.hostname === 'localhost' ||
       // [::1] is the IPv6 localhost address.
       window.location.hostname === '[::1]' ||
       // 127.0.0.1/8 is considered localhost for IPv4.
@@ -46,7 +46,7 @@
         if (navigator.serviceWorker.controller) {
           // The updatefound event implies that registration.installing is set:
           // https://slightlyoff.github.io/ServiceWorker/spec/service_worker/index.html#service-worker-container-updatefound-event
-          var installingWorker = registration.installing;
+          const installingWorker = registration.installing;
 
           installingWorker.onstatechange = function() {
             switch (installingWorker.state) {

app/scripts/sw/runtime-caching.js

@@ -1,4 +1,4 @@
-/*!
+/**
  *
  *  Web Starter Kit
  *  Copyright 2015 Google Inc. All rights reserved.
@@ -17,17 +17,20 @@
  *
  */
 /* eslint-env worker */
-// global.toolbox is defined in a different script, sw-toolbox.js, which is part of the
+// global.toolbox is defined in a different script,
+// sw-toolbox.js, which is part of the
 // https://github.com/GoogleChrome/sw-toolbox project.
-// That sw-toolbox.js script must be executed first, so it needs to be listed before this in the
+// That sw-toolbox.js script must be executed first,
+// so it needs to be listed before this in the
 // importScripts() call that the parent service worker makes.
 (function(global) {
   'use strict';
 
   // See https://github.com/GoogleChrome/sw-toolbox/blob/6e8242dc328d1f1cfba624269653724b26fa94f1/README.md#toolboxroutergeturlpattern-handler-options
   // and https://github.com/GoogleChrome/sw-toolbox/blob/6e8242dc328d1f1cfba624269653724b26fa94f1/README.md#toolboxfastest
-  // for more details on how this handler is defined and what the toolbox.fastest strategy does.
+  // for more details on how this handler is defined
+  // and what the toolbox.fastest strategy does.
   global.toolbox.router.get('/(.*)', global.toolbox.fastest, {
-    origin: /\.(?:googleapis|gstatic)\.com$/
+    origin: /\.(?:googleapis|gstatic)\.com$/,
   });
 })(self);

gulpfile.babel.js

@@ -106,25 +106,25 @@ gulp.task('styles', () => {
 // to enable ES2015 support remove the line `"only": "gulpfile.babel.js",` in the
 // `.babelrc` file.
 gulp.task('scripts', () =>
-    gulp.src([
-      // Note: Since we are not using useref in the scripts build pipeline,
-      //       you need to explicitly list your scripts here in the right order
-      //       to be correctly concatenated
-      './app/scripts/main.js'
-      // Other scripts
-    ])
-      .pipe($.newer('.tmp/scripts'))
-      .pipe($.sourcemaps.init())
-      .pipe($.babel())
-      .pipe($.sourcemaps.write())
-      .pipe(gulp.dest('.tmp/scripts'))
-      .pipe($.concat('main.min.js'))
-      .pipe($.uglify({preserveComments: 'some'}))
-      // Output files
-      .pipe($.size({title: 'scripts'}))
-      .pipe($.sourcemaps.write('.'))
-      .pipe(gulp.dest('dist/scripts'))
-      .pipe(gulp.dest('.tmp/scripts'))
+  gulp.src([
+    // Note: Since we are not using useref in the scripts build pipeline,
+    //       you need to explicitly list your scripts here in the right order
+    //       to be correctly concatenated
+    './app/scripts/main.js'
+    // Other scripts
+  ])
+    .pipe($.newer('.tmp/scripts'))
+    .pipe($.sourcemaps.init())
+    .pipe($.babel())
+    .pipe($.sourcemaps.write())
+    .pipe(gulp.dest('.tmp/scripts'))
+    .pipe($.concat('main.min.js'))
+    .pipe($.uglify())
+    // Output files
+    .pipe($.size({title: 'scripts'}))
+    .pipe($.sourcemaps.write('.'))
+    .pipe(gulp.dest('dist/scripts'))
+    .pipe(gulp.dest('.tmp/scripts'))
 );
 
 // Scan your HTML for assets & optimize them

package.json

@@ -2,40 +2,43 @@
   "devDependencies": {
     "apache-server-configs": "^2.14.0",
     "babel-core": "^6.14.0",
-    "babel-preset-es2015": "^6.0.15",
+    "babel-eslint": "^8.0.1",
+    "babel-preset-env": "^1.6.0",
     "browser-sync": "^2.14.0",
-    "del": "^2.2.2",
-    "eslint-config-google": "^0.3.0",
+    "del": "^3.0.0",
+    "eslint": "^4.8.0",
+    "eslint-config-google": "^0.9.1",
     "gulp": "^3.9.1",
-    "gulp-autoprefixer": "^3.1.1",
-    "gulp-babel": "^6.1.2",
+    "gulp-autoprefixer": "^4.0.0",
+    "gulp-babel": "^7.0.0",
     "gulp-cache": "^0.4.5",
     "gulp-concat": "^2.6.0",
     "gulp-cssnano": "^2.1.2",
-    "gulp-eslint": "^1.1.1",
-    "gulp-htmlmin": "^2.0.0",
+    "gulp-eslint": "^4.0.0",
+    "gulp-htmlmin": "^3.0.0",
     "gulp-if": "^2.0.1",
-    "gulp-imagemin": "^2.4.0",
+    "gulp-imagemin": "^3.4.0",
     "gulp-load-plugins": "^1.2.4",
     "gulp-newer": "^1.2.0",
-    "gulp-sass": "^2.3.2",
+    "gulp-sass": "^3.1.0",
     "gulp-size": "^2.1.0",
-    "gulp-sourcemaps": "^1.6.0",
-    "gulp-uglify": "^1.5.4",
+    "gulp-sourcemaps": "^2.6.1",
+    "gulp-uglify": "^3.0.0",
     "gulp-useref": "^3.1.0",
-    "psi": "^2.0.4",
-    "run-sequence": "^1.0.1",
-    "sw-precache": "^3.2.0",
+    "psi": "^3.0.0",
+    "run-sequence": "^2.2.0",
+    "sw-precache": "^5.2.0",
     "sw-toolbox": "^3.2.1"
   },
   "engines": {
     "node": ">=0.12"
   },
   "private": true,
   "scripts": {
-    "test": "gulp && git status | grep 'working directory clean' >/dev/null || (echo 'Please commit all changes generated by building'; exit 1)"
+    "test": "gulp && git status | grep 'working tree clean' >/dev/null || (echo 'Please commit all changes generated by building'; exit 1)"
   },
   "eslintConfig": {
-    "extends": "google"
+    "extends": "google",
+    "parser": "babel-eslint"
   }
 }