如何在角度8的ts文件中包含工厂

Question

我有一个具有ngx-timpicker factory.ts的工厂，我想将其包含在ts文件中，以便在time.ts文件中使用该工厂，但是在time.ts文件的导入行中出现错误该错误-

TS2305: Module '"../../factories/timepickerconfig.factory"' has no exported member 'TimepickerConfig'.

7 import { TimepickerConfig } from '../../factories/timepickerconfig.factory';
           ~~~~~~~~~~~~~~~~

    import { TimepickerConfig } from '../../factories/timepickerconfig.factory';

如何在ts文件中导入工厂

factory / timepickerconfig.factory.ts

import { TimepickerConfig } from 'ngx-bootstrap/timepicker';

useFactory: () => {
    const timepickerConfig = new TimepickerConfig();
    timepickerConfig.hourStep = 2;
    timepickerConfig.minuteStep = 10,
    timepickerConfig.showMeridian = false,
    timepickerConfig.readonlyInput = false,
    timepickerConfig.mousewheel = true,
    timepickerConfig.showMinutes = true,
    timepickerConfig.showSeconds = false
  }

time.ts

import { TimepickerConfig } from '../../factories/timepickerconfig.factory';

@Component({
  selector: 'time',
  templateUrl: './time.html',
  styleUrls: ['./time.scss'],
  encapsulation: ViewEncapsulation.None,
  providers: [
    { provide: TimepickerConfig, useFactory: TimepickerConfig },
    { provide: DateAdapter, useClass: MomentDateAdapter, deps: [MAT_DATE_LOCALE] },
    { provide: MAT_DATE_FORMATS, useValue: MAT_MOMENT_DATE_FORMATS }]
})