NativeScript/nativescript-angular

Angular 12 migration leads to huge amounts of Change Detection cycles

cjohn001 opened this issue · 1 comments

cjohn001 commented

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

  • CLI: 8.0.2
    "@nativescript/core": "~8.0.0"
    "@nativescript/android": "8.0.0",
    "@nativescript/ios": "JSC",
    "@angular/*": "~12.1.2",
    "@nativescript/angular": "~12.0.6"

Describe the bug
After migration to the Angular 12 I am observing huge amounts of Change Detection cycles. About 50 cycles when navigating to an empty page, and about 300 cycles when navigating to a page with content.

Cycles where measured via calls to ngAfterViewChecked().

Note: For everyone observing the same issue. A workaround exists my setting up Angular as follows. I am not sure yet. if this breaks other things:

appModuleBootstrap: (reason: string) =>
platformNativeScript().bootstrapModule(AppModule, { ngZoneEventCoalescing: true })

cjohn001 commented

shifted to angular 12 repo