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Use a first-frame event to signal that it is safe for the service worker to activate #66066
Description
This should speed up the performance of the initial load the first time an application using Flutter Web is visited. Currently registration is delayed to a load event:
if ('serviceWorker' in navigator) {
window.addEventListener('load', function () {
navigator.serviceWorker.register('flutter_service_worker.js');
});
}Instead we should have the engine dispatch an event after the first frame. Then listen for this instead:
if ('serviceWorker' in navigator) {
window.addEventListener('flutter-first-frame', function () {
navigator.serviceWorker.register('flutter_service_worker.js');
});
}
Activity
[flutter_tools] register service worker after first frame event (#66082)
github-actions commentedon Aug 12, 2021
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