Top Ten words in an array

topTen.js

// "word" array generator
const letter = () => String.fromCharCode(~~(Math.random() * 26) + 97);

const pair = () => `${letter()}${letter()}`;

const gen = length =>
  Array(length)
    .fill()
    .map(pair);


// actual counting code
const count = arr =>
  arr.reduce((acc, value) => {
    if (!acc[value]) acc[value] = { value, count: 0 }
    acc[value].count++
    return acc
  }, {});

const sort = (a, b) => (a.count > b.count ? -1 : a.count < b.count ? 1 : 0);

const topTen = counted =>
  Object.keys(counted)
    .map(key => counted[key])
    .sort(sort)
    .slice(0, 10);
    
const arrayOfWords = gen(100000);

const start = Date.now();
const result = topTen(count(arrayOfWords));
const time = Date.now() - start;

console.table(result);
console.log(`${time}ms`);