Found the synthetic property @enterAnimation. Please include either “BrowserAnimationsModule” or “NoopAnimationsModule” in your application. Angular4

Question

When running Karma to test my Angular4 application, I get this error Found the synthetic property @enterAnimation. Please include either \"BrowserAnimationsModule\" o

Answer 1

I found the solution. I just needed to import in app.component.spec.ts the same import

 // animation module
        import { BrowserAnimationsModule } from '@angular/platform-browser/animations'; 
    ...
@NgModule({
    imports: [...
        BrowserAnimationsModule,
        ...
      ],

Answer 2

If you see this error during unit testing then you could import utility module like NoopAnimationsModule into your spec file which mocks the real animation and donot actually animate

import { NoopAnimationsModule } from '@angular/platform-browser/animations';

Answer 3

for my case all i did was add this line to my component (users-component.ts)

@Component({
animations: [appModuleAnimation()],
})

of course ensure you have imported the relevant module in app.component.ts or where you import your modules

 // animation module
    import { BrowserAnimationsModule } from '@angular/platform-browser/animations'; 

    @NgModule({
         imports: [
            BrowserAnimationsModule,
        ],
    })

Answer 4

If you face this error in Storybook, then do import this BrowserAnimationsModule to moduleMetadata in your story.
Like this,

import { BrowserAnimationsModule } from '@angular/platform-browser/animations';


export const Primary = () => ({
  template: `
   <div style="width: 720px">
    <view-list [data]="data"></view-list>
   </div>
   `,
  moduleMetadata: {
    imports: [AppModule, BrowserAnimationsModule],
  },
  props: {
    data: SOME_DATA_CONSTANT,
  },
});

PS: For Angular, answers that are mentioned above works well!

Answer 5

For my Angular 6 application, I resolved the issue by adding the following to my component .spec.ts file:

import { BrowserAnimationsModule } from '@angular/platform-browser/animations';

Then add the BrowserAnimationsModule to the imports of the TestBed.configureTestingModule in the same component .spec.ts file

  beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [ LinkedSitesComponent ], imports: [ BrowserAnimationsModule ],
    })
    .compileComponents();
  }));

Answer 6

For angular 7 and previous version, you only need to add this line in your app.module.ts file, and remember put it in the imports array modules too in the same file:

import { BrowserAnimationsModule } from "@angular/platform-browser/animations";