如何在angular 8上使用动画？

import { trigger, state, style, animate, transition } from '@angular/animations';

@Component({
  selector: 'app-your-component',
  templateUrl: './your-component.component.html',
  styleUrls: ['./your-component.component.css'],
  animations: [
    trigger('fadeInOut', [
      state('void', style({
        opacity: 0
      })),
      transition('void <=> *', animate(500)),
    ])
  ]
})

<button [@fadeInOut]>Click me</button>

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

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