import {Component, NgModule} from '@angular/core';

abstract class Greeter {
  abstract greet(): string;
}

class GreeterEN implements Greeter {
  greet() {
    return 'Hi';
  }
}

@Component({
    selector: 'my-component',
    template: '<div></div>',
    providers: [GreeterEN, { provide: Greeter, useClass: GreeterEN }],
    viewProviders: [GreeterEN],
    standalone: false
})
export class MyComponent {
}

@NgModule({declarations: [MyComponent]})
export class MyModule {
}
