@angular/upgrade

Angular Compatibility Compiler (ngcc) has been removed and as a result Angular View Engine libraries will no longer work

Several changes to the Angular Package Format (APF)

MockPlatformLocation is now provided by default in tests. Existing tests may have behaviors which rely on BrowserPlatformLocation instead. For example, direct access to the window.history in either the test or the component rather than going through the Angular APIs (Location.getState()). The quickest fix is to update the providers in the test suite to override the provider again TestBed.configureTestingModule({providers: [{provide: PlatformLocation, useClass: BrowserPlatformLocation}]}). The ideal fix would be to update the code to instead be compatible with MockPlatformLocation instead.

If the 'ngTemplateOutletContext' is different from the context, it will result in a compile-time error.

Add the 'xxx' property to 'MyContext' with the correct type or

Add '$any(...)' inside the template to make the error disappear. However, adding '$any(...)' does not correct the error but only preserves the previous behavior of the code.

• TypeScript 4.8 is no longer supported.

QueryList.filter now supports type guard functions, which will result in type narrowing. Previously if you used type guard functions, it resulted in no changes to the return type. Now the type would be narrowed, which might require updates to the application code that relied on the old behavior.

zone.js versions 0.11.x and 0.12.x are not longer supported.

• entryComponents has been deleted from the @NgModule and @Component public APIs. Any usages can be removed since they weren't doing anyting.