Sort exapmle

example.js

import sort from './sort';

function sort(type) {
  const sortFunction = getSortFunctiion(type);
  
  if(sortFunction) {
    return products.sort(sortFunction);
  }
  
  return products;
}

function getSortFunction(type) {
  let sortFunction = null;
  
  switch (type) {
    case 1:
      sortFunction = sort.lessToMore('price')
      break;
    case 2:
      sortFunction = sort.moreToLess('price')
      break;
    case 3:
      sortFunction = sort.lessToMore('created_at', 'date)
      break;
    case 4:
      sortFunction = sort.moreToLess('created_at', 'date')
      break;
  }
  
  return sortFunction;
}

functions.js

export default {
  moreToLess: (key, keyType) => {
    return (a, b) => {
      if(keyType === 'date') {
        return new Date(b[key]) - new Date(a[key]);
      }

      return b[key] - a[key];
    };
  },
  
  lessToMore: (key) => {
    return (a, b) => {
      if(keyType === 'date') {
        return new Date(b[key]) - new Date(a[key]);
      }
      
      return a[key] - b[key];
    };
  },
}