Is there any instructions on how to build angular by myself?
On Fri, Mar 22, 2019 at 8:09 PM Peter Hsu <xusw...@gmail.com> wrote:
> Hi Angular:
>
> I am circling back to a problem I encountered a while ago and didn't have
> time to resolve. The story is that I have a angular 1.7 app with a rather
> eccentric setup. (It runs as both standalone website and a plugin for
> another angular app with different bootstrap code path)
>
> I wanted to upgrade our dependencies and part of this implies I will have
> to start using angular 7. However, the static injector is starting to give
> me issues.
>
> The SDK I use requires me to instantiate services (from their library) and
> pass it to its application context during app init. I need to do something
> as followed.
>
> class AppComponent implements OnDestroy, OnInit {
> constructor(
> private appContext: AppContextService, private navigationService:
> NavigationService) {
> }
>
> public ngOnInit(): void {
> this.appContext.ngInit({ navigationService: this.navigationService });
> }
> }
>
> Where AppContextService and NavigationService are both provided by the
> SDK.
>
> However, after upgrading to angular 7 I am starting to see this error
> during my app launch.
>
> (object): Error: StaticInjectorError(AppModule)[NavigationService ->
> Router]:
> StaticInjectorError(Platform: core)[NavigationService -> Router]:
> NullInjectorError: No provider for Router!
>
> Note that NavigationService is dependent of @angular/router and I have
> RouterModule.forRoot in my app module, also I remembered to export
> RouterModule in my app module.
>
> This is extremely confusing because I actually tried to move the
> instantiation of NavigationService to the init method and see the
> behavior as followed
>
>
> constructor(
> private injector: Injector,
> private appContext: AppContextService,
> ) {
> .....
> }
>
> public ngOnInit(): void {
> let router: Router = this.injector.get(Router);
> if (!router) {
> console.warn(`no router`);
> } else {
> console.warn(`yes router`);
> }
> let navigationService: NavigationService = this.injector.get(
> NavigationService);
> this.appContext.ngInit({ navigationService: navigationService });
> ....
>
> Output
>
> *yes router*
>
>
> *(object): Error: StaticInjectorError(AppModule)[NavigationService ->
> Router]: StaticInjectorError(Platform: core)[NavigationService ->
> Router]: NullInjectorError: No provider for Router!*
>
> How is this even possible?
>
> (Apologies for asking such a vague question. I am currently trying to
> create a minimal reproduction with very little luck due to the complicated
> way our app is set up.) Just wondering if anyone can spot the issue or
> provide some information that I can work on while I try to come up with a
> more concise problem description)
>
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