SwUpdate checkForUpdate finishes too early on mobile devices #53867
Description
Which @angular/* package(s) are the source of the bug?
service-worker
Is this a regression?
No
Description
Hi community.
I want to be informed after all asset prefetching is complete by the service-worker. I'm using this to show a preloader as long as the application is still downloading assets.
In the ngsw-config.json I set
"installMode": "prefetch",
"updateMode": "prefetch",
for all the asset files I need (round about 50 MB).
In a service (started at application startup) I'm doing something like this:
if (this.swUpdate.isEnabled) {
this.swUpdate.checkForUpdate().then(() => {
// Here I will hide the preloader
// This will be called AFTER all asset fetching is complete on nearly every desktop browser (Chrome, Edge, Firefox).
// But this will be called BEFORE asset fetching is complete (assets still loading) on Android (Chrome, Edge)
});
}
According to the documentation of checkForUpdate it should wait until fetching is complete:
Checks for an update and waits until the new version is downloaded from the server and ready for activation.
So my question: Is this a bug or do I have a wrong understanding of how that works?
Please provide a link to a minimal reproduction of the bug
No response
Please provide the exception or error you saw
No response
Please provide the environment you discovered this bug in (run ng version)
Angular CLI: 16.2.10
Node: 18.16.1
Package Manager: npm 9.7.2
OS: win32 x64
Angular: 16.2.12
... animations, cdk, common, compiler, compiler-cli, core, forms
... material, material-date-fns-adapter, platform-browser
... platform-browser-dynamic, router, service-worker
Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1602.10
@angular-devkit/build-angular 16.2.10
@angular-devkit/core 16.2.10
@angular-devkit/schematics 16.2.10
@angular/cli 16.2.10
@angular/fire 7.6.1
@angular/pwa 16.2.10
@schematics/angular 16.2.10
rxjs 7.8.1
typescript 4.9.5
zone.js 0.13.3
Anything else?
No response