definma-ui/src/app/object.pipe.ts

import { Pipe, PipeTransform } from '@angular/core';
import omit from 'lodash/omit';

@Pipe({
  name: 'object',
  pure: true
})
export class ObjectPipe implements PipeTransform {

  transform(value: object, omitValue: string[] = []): string {
    const res = omit(value, omitValue);
    return res && Object.keys(res).length ? JSON.stringify(res) : '';
  }

}