как создать собственную сортировочную трубу в angular 4
component.ts
@Component({
    selector: 'app-cinemas',
    templateUrl: './cinemas.component.html',
    encapsulation: ViewEncapsulation.None,
    styleUrls: ['./cinemas.component.css']
})
export class CinemasComponent implements OnInit {
    filteredCinema = [];   
 master() {
        this.cinemaService.getCinMaster()
            .subscribe(
                (response: any) => {
                    this.filteredCinema = response;
                },
            //  (error) => console.log(error)
        );}
component.html
<div class="table-scrollable">
<table class="table table-striped table-bordered table-advance table-hover">
<thead>
   <tr>
   <th>Cinema</th>
    <th>Cinema Operator</th>
    <th>Capacity</th>
     <th>Cinema Status</th>
     <th>Unavailable From Date</th>
     <th>Unavailable To Date</th>
     <th>Actions</th>
     </tr>
</thead>
   <tbody>
 <!-- Loop starts here -->
 <tr class="cinema-row cathay" *ngFor="let cintable of filteredCinema | sorting:'cintable.cinema_name' ">
 <td>
  <p class="uppercase">{{cintable.cinema_name }}</p>
 </td>
   <td> 
   <img [src]="getOperatorImg(cintable.cinema_operator_id)" height="30">
     </td>
    <td>
 <small>
Halls:
 <strong>{{cintable.halls.length}}</strong>
 </small>
  </td>
  <td>
<p class="uppercase">{{getStatusName(cintable.status)}}</p>
 </td>
 <td>
 <p class="uppercase">{{cintable.available_date_from | date}}</p>
 </td>
 <td>
 <p class="uppercase">{{cintable.available_date_to | date}} </p>
</td>
 <td>
 <p class="uppercase">{{cintable.entity}} </p>
</td>
<!-- Loop ends here -->
  </tbody>
 </table>
</div>
Pipe.ts
import { Pipe, PipeTransform } from '@angular/core';
@Pipe({
  name: 'sorting'
})
export class SortingPipe implements PipeTransform {  
  transform(value: any, args?: any): any {
    return null;
  }
}
нужно отсортировать cintable.cinema_name, но не удается найти решение. Вот ссылка, по которой я прошел https://hashtagcoder.com/an-introduction-to-angular-cli-part-3-sort-and-filter-data-with-custom-pipes/
Пожалуйста, помогите мне с этим
 
                                                                     
                                                                    