src/app/shared/models/modifiedContacts.model.ts

import { Contact } from '@shared/models';

export class ModifiedContacts {

    public searchText: string = null;
    public contactTypeId: string = '';
    public sort: string = null;
  
    public constructor(data: any = null) {
      Object.keys(data || {})
        .filter(property => this.hasOwnProperty(property))
        .forEach(property => (this[property] = data[property]));
    }
  }