Question

似乎我陷入了困境，如果我不尝试使用要导出的抽象组件来使运行时应用程序能够扩展，则陷入困境。

@Component({
  templateUrl: './abstract-type-ahead.component.html',
  styleUrls: ['./abstract-type-ahead.component.scss']
})
export abstract class AbstractTypeAheadComponent<T> implements AfterViewInit {

  protected abstract service: AbstractTypeAheadService<T>;
  abstract placeholder = 'Type to filter';
  formControl = new FormControl();
  filteredOptions$: Observable<T[]> = of();

  ngAfterViewInit(): void {
    this.filteredOptions$ = this.service.bindToLookupQuery(this.formControl);
  }
}

如果将组件添加到模块的声明中，则可能由于它是抽象的，所以不允许这样做。如果未添加，则编译器会抱怨说该组件没有模块。

------------------------------------------------------------------------------
Building entry point 'shared-modules'
------------------------------------------------------------------------------
Compiling TypeScript sources through ngc
ERROR: Cannot determine the module for class AbstractTypeAheadComponent in C:/_dev/workspace/projects/shared-modules/src/lib/pattern-library/layout/type-ahead/abstract-type-ahead.component.ts! Add AbstractTypeAheadComponent to the NgModule to fix it.

Angular库未导出抽象组件会导致错误：无法确定模块

0 个答案: