import {Pipe, ChangeDetectorRef, PipeTransform} from '@angular/core';
import * as moment from 'moment';
const momentConstructor: (value?: any) => moment.Moment = (<any>moment).default || moment;
 @Pipe({ name: 'amDateFormat' })
export class DateFormatPipe implements PipeTransform {
transform(value: Date | moment.Moment | string | number, ...args: any[]):
string {
   if (!value) return '';
  return momentConstructor(value).format(args[0]);
  }
}