如何在typescript/angular中使用Set/Array字段发布对象

class MyObject {
  setField: Set<string>;
  arrayField: Array<number>;

  constructor() {
    this.setField = new Set<string>();
    this.arrayField = [];
  }
}

let myObj = new MyObject();
myObj.setField.add('element1');
myObj.setField.add('element2');
myObj.arrayField.push(1);
myObj.arrayField.push(2);

@Injectable()
export class MyService {
  private myObj: MyObject;

  constructor() {
    this.myObj = new MyObject();
    this.myObj.setField.add('element1');
    this.myObj.setField.add('element2');
    this.myObj.arrayField.push(1);
    this.myObj.arrayField.push(2);
  }

  getMyObject(): MyObject {
    return this.myObj;
  }
}

@Component({
  selector: 'my-component',
  template: `
    <div>Set Field: {{ myObj.setField }}</div>
    <div>Array Field: {{ myObj.arrayField }}</div>
  `
})
export class MyComponent {
  myObj: MyObject;

  constructor(private myService: MyService) {
    this.myObj = myService.getMyObject();
  }
}