module.exports = {
  staticFileGlobs: [
    '/index.html',
    '/manifest.json',
    '/bower_components/webcomponentsjs/webcomponents-lite.min.js'
  ],
  navigateFallback: '/index.html'
};

@@ -139,16 +139,93 @@
 .min.js'
+,%0A    'bower_components/viewport-units-buggyfill/viewport-units-buggyfill.js'
 %0A  %5D,%0A  

Include viewport fixer to be cached by service worker