anagrams? created by minmaxdata - https://repl.it/@minmaxdata/anagrams

main.js

function anagram(first, second) {
  let one = [...first];
  let two = [...second];
  let temp = {}
  const len = one.length === two.length;

  if (len) {
    temp = one.reduce(function (letters, letter) {
      if (letter in letters) {
        letters[letter]++
      } else {
        letters[letter] = 1
      }
      return letters
    }, {});
    
    two.map(alpha => {
      if (temp[alpha] > 0) {
        temp[alpha]--;
      }
      if (temp[alpha] === 0) {
        delete temp[alpha];
      }
    })

  }
  return Object.keys(temp).length === 0;
}
console.log('anagram', anagram('restful', 'fluster'));