class Filter {
  constructor(criteria) {
    
                                  
                                  
                                    this
                                  
                                  .criteria =
                                  
                                     criteria;
  }

  meetCriteria(elements) {
    
                                  
                                  
                                    return
                                  
                                   elements.filter(element => 
                                  
                                    this
                                  
                                  
                                    .criteria(element));
  }
}

class PriceFilter extends Filter {
  constructor(price) {
    super(element 
                                  
                                  => element.price <=
                                  
                                     price);
  }
}

class BrandFilter extends Filter {
  constructor(brand) {
    super(element 
                                  
                                  => element.brand ===
                                  
                                     brand);
  }
}

const products 
                                  
                                  =
                                  
                                     [
  { name: 
                                  
                                  'Product A', price: 10, brand: 'Brand A'
                                  
                                     },
  { name: 
                                  
                                  'Product B', price: 20, brand: 'Brand B'
                                  
                                     },
  { name: 
                                  
                                  'Product C', price: 30, brand: 'Brand C'
                                  
                                     },
];

const priceFilter 
                                  
                                  = 
                                  
                                    new
                                  
                                   PriceFilter(20
                                  
                                    );
const brandFilter 
                                  
                                  = 
                                  
                                    new
                                  
                                   BrandFilter('Brand A'
                                  
                                    );

const filteredProducts 
                                  
                                  =
                                  
                                     priceFilter.meetCriteria(products);
const finalProducts 
                                  
                                  =
                                  
                                     brandFilter.meetCriteria(filteredProducts);

console.log(finalProducts);

                                  
                                  
                                    //
                                  
                                  
                                     Output: [{ name: 'Product A', price: 10, brand: 'Brand A' }]