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Fix service worker onUpdate not triggering if page load was interrupted #23

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Fix service worker onUpdate not triggering if page load was interrupted #23

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20 changes: 20 additions & 0 deletions packages/cra-template-pwa-typescript/template/src/serviceWorkerRegistration.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,26 @@ function registerValidSW(swUrl: string, config?: Config) {
}
};
};

// in the case a page is loaded an a service worker is already waiting
// we should trigger the onUpdate callback
const waitingWorker = registration.waiting;
if (waitingWorker) {
if (navigator.serviceWorker.controller && waitingWorker.state === 'installed') {
// At this point, the updated precached content has been fetched,
// but the previous service worker will still serve the older
// content until all client tabs are closed.
console.log(
'New content is available and will be used when all ' +
'tabs for this page are closed. See https://cra.link/PWA.'
);

// Execute callback
if (config && config.onUpdate) {
config.onUpdate(registration);
}
}
}
})
.catch((error) => {
console.error('Error during service worker registration:', error);
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20 changes: 20 additions & 0 deletions packages/cra-template-pwa/template/src/serviceWorkerRegistration.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -90,6 +90,26 @@ function registerValidSW(swUrl, config) {
}
};
};

// in the case a page is loaded an a service worker is already waiting
// we should trigger the onUpdate callback
const waitingWorker = registration.waiting;
if (waitingWorker) {
if (navigator.serviceWorker.controller && waitingWorker.state === 'installed') {
// At this point, the updated precached content has been fetched,
// but the previous service worker will still serve the older
// content until all client tabs are closed.
console.log(
'New content is available and will be used when all ' +
'tabs for this page are closed. See https://cra.link/PWA.'
);

// Execute callback
if (config && config.onUpdate) {
config.onUpdate(registration);
}
}
}
})
.catch((error) => {
console.error('Error during service worker registration:', error);
Expand Down