if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {
if (navigator.serviceWorker.controller) {