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r17x/check-serviceWorker.md

Created February 18, 2019 13:49
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check-serviceWorker.md

How to check service worker has installed in your browser

const z = await navigator.serviceWorker.getRegistrations() // return array Of [ServiceWorkerRegistration]
/***
[{
active: ServiceWorker {scriptURL: "http://localhost:5000/service-worker.js", state: "activated", onerror: null, onstatechange: ƒ}
installing: null
navigationPreload: NavigationPreloadManager {}
onupdatefound: ƒ ()
paymentManager: PaymentManager {instruments: PaymentInstruments, userHint: ""}
pushManager: PushManager {}
scope: "http://localhost:5000/"
sync: SyncManager {}
updateViaCache: "imports"
waiting: null
__proto__: ServiceWorkerRegistration
}]
***/
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