无法将Observable返回的对象作为输入组件Angular 5传递

import { Component, OnInit } from '@angular/core';
import { Observable } from 'rxjs';
import { DataService } from 'your-data-service';

@Component({
  selector: 'app-your-component',
  template: `
    <app-child-component [data]="data$ | async"></app-child-component>
  `,
})
export class YourComponent implements OnInit {
  data$: Observable<any>;

  constructor(private dataService: DataService) {}

  ngOnInit() {
    this.data$ = this.dataService.getData();
  }
}

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

@Component({
  selector: 'app-child-component',
  template: `
    <div>{{ data }}</div>
  `,
})
export class ChildComponent {
  @Input() data: any;
}