如何解决此问题[错误：“必须正确处理承诺”]

Question

以前也有类似的问题，但是在我全部阅读完之后，仍然不知道如何解决问题。

我正在为Angular项目运行以下棉绒

ng lint && ng test && ng build --configuration=local

但是得到了结果 [10, 5]: Promises must be handled appropriately

这意味着“ TestBed.configureTestingModule”行

以下是原始代码（仅公共部分）

import { async, ComponentFixture, TestBed } from '@angular/core/testing';
import {CommonComponent} from './loading-common.component';


describe('LoadingComponent', () => {
  let component: CommonComponent;
  let fixture: ComponentFixture<CommonComponent>;

  beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [ CommonComponent ],
    })
    .compileComponents();
  }));

  beforeEach(() => {
    fixture = TestBed.createComponent(CommonComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });
});

是否有针对此问题的其他解决方案？谢谢。

其他信息： 这没有提及描述： What could this be about? [TsLint Error: "Promises must be handled appropriately"]