import { Pipe, PipeTransform } from '@angular/core'; @Pipe({ name: 'getById', pure: false }) export class GetByIdPipe implements PipeTransform { transform(value: any[], id: number, property: string): any { const foundItem = value.find(item => { if ( item.id !== undefined ) { return item.id === id; } return false; }); if ( foundItem ) { return foundItem[property]; } } }