generator-polymer-init-vaadin-elements-app/app/templates/sw-precache-config.js

Progressive web application template with Polymer App Toolbox and Vaadin Elements

module.exports = {
  staticFileGlobs: [
    'bower_components/webcomponentsjs/webcomponents-loader.js',
    'manifest.json',
  ],
  runtimeCaching: [
    {
      urlPattern: /\/bower_components\/webcomponentsjs\/.*.js/,
      handler: 'fastest',
      options: {
        cache: {
          name: 'webcomponentsjs-polyfills-cache',
        },
      },
    },
  ],
};