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

@Pipe({
  name: 'filter'
})
export class FilterPipe implements PipeTransform {

  transform(value: any, filterString: string, propName: string): any {
    if (value.length === 0) {

      return value;

    }

    const resultArray = [];

    for (const item of value) {

      if (item[propName] === filterString) {
        resultArray.push(item);

      }

    }
    return resultArray;

  }

}