Memoized function for better performance

memoize.js

/**
 * @version 2
 * @description memoized function for better performance
 * @param {function} func
 * @returns {function} func
 */
function memoize(func){
    const cache = new Map();
    return (...args)=>{
        const key = args.join('');
        if(cache.has(key)) return cache.get(key);
        result = func(...args);
        cache.set(key, result);
        return result;            
    }
}

/**
 * @version 1
 * @description memoized function for better performance
 * @param {function} func
 * @returns {function} func
 */
function memoize(func) {
  var cache = {};
  return function() {
    var id = JSON.stringify(arguments);
    if (cache[id] === undefined) 
      cache[id] = func.apply(this, arguments);
    return cache[id];
  };
}