Logic Test

anagram.js

const anagrams = (arr) => {
  const result = {}
  for (value of arr) {
    const key = value.split('').sort().join('')
    if (typeof result[key] === 'undefined') {
      result[key] = []
    }
    result[key].push(value)
  }
  return Object.values(result)
}

const arr = ['cook', 'save', 'taste', 'aves', 'vase', 'state', 'map']
const res = anagrams(arr)

console.log(res)