// .catch(err => console.error('Cannot register service worker.', err))
// }
- if (navigator.serviceWorker) {
+ if (navigator.serviceWorker && typeof navigator.serviceWorker.getRegistrations === 'function') {
navigator.serviceWorker.getRegistrations()
- .then(registrations => {
- for (const registration of registrations) {
- registration.unregister()
- }
- })
+ .then(registrations => {
+ for (const registration of registrations) {
+ registration.unregister()
+ }
+ })
}
return bootstrapModule