message: Service worker the JSON
diff: @@ -291,8 +291,9 @@ module.exports = (env) => {
  // Generate a service worker
  config.plugins.push(new WorkboxPlugin({
  maximumFileSizeToCacheInBytes: 5000000,
  - globPatterns: ['**/*.{html,js,css,woff2}', 'static/*.png'],
  + globPatterns: ['**/*.{html,js,css,woff2,json}', 'static/*.{png,jpg}'],
  globIgnores: [
  + 'data/**',
  'manifest-*.js',
  'extension-scripts/*',
  'service-worker.js'
  