Error: e does not have a module def (ɵmod property)

Question

During my unit test i see this error Error: e does not have a module def (ɵmod property)

I updated to angular v14(

"@angular/cli": "~14.0.0",

) and nx workspace (

"@nrwl/workspace": "14.4.3",

)

The error does not specify which module is causing the problem:

Error: e does not have a module def (ɵmod property)

    at transitiveScopesFor(....)

test File:

describe('AppComponent', () => {
  let mockOAuthService;

  beforeEach(waitForAsync(() => {
    // mocks
    Object.defineProperty(window, 'matchMedia', {
      value: jest.fn(() => {
        return { matches: true };
      }),
    });
    mockOAuthService = { logout: jest.fn(), checkAuthentication: () => Promise.resolve(null) };

    TestBed.configureTestingModule({
      declarations: [AppComponent, AddEntriesButtonComponent],
      imports: [
        BrowserAnimationsModule,
        HttpClientModule,
        HsMaterialModule,
        RouterTestingModule,
        RightsModule,
        AuthModule.forRoot(),
        NgxsModule.forRoot(),
      ],
      providers: [{ provide: AuthService, useValue: mockOAuthService }, MediaObserver],
      teardown: { destroyAfterEach: false },
    }).compileComponents();
  }));

  it('should create the app successfully', () => {
    const fixture = TestBed.createComponent(AppComponent);
    const app = fixture.debugElement.componentInstance;
    expect(app).toBeTruthy();
  });
});

I have been stuck with this for days and i cannot find solution anywhere. I have tried deleting node_module and npm ci and other steps in : https://github.com/storybookjs/storybook/issues/13958

It did not help.

I already have this in package json

"scripts": {

"postinstall": "ngcc --properties es2020 browser module main && node ./decorate-angular-cli.js",
}

as stated in ngx-leaflet-draw: Importing module which does not have a ɵmod property

yes i did..i deleted node_modules and did npm ci – Abs Nov 16 '22 at 14:33 — Abs, Nov 16 '22 at 14:33

score 0 · Answer 1 · answered Dec 28 '22 at 06:00

you are looking at the problem in the wrong place. the error is not in the test file. I assume you have created a custom component which you want to reuse in multiple pages. If you are using a shared module do not forget to include "entryComponents:" and if you do not have a shared module then make sure the custom component is in the "entryComponents:[customComponentName]" here is an example:

//shared module

@NgModule({
  imports: [
    IonicModule.forRoot(),
    CommonModule,
    MomentModule,
  ],
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
  declarations: [CustomComponentName],
  entryComponents: [CustomComponentName],
  exports: [CustomComponentName]

})
export class SharedModule {
  static forRoot() {
    return {
      ngModule: SharedModule,
      schemas: [CUSTOM_ELEMENTS_SCHEMA],
    }
  }
}

Error: e does not have a module def (ɵmod property)

1 Answers1