Fizzbuzz

fizzbuzz.js

const range = length => [...Array(length).keys()];
const divBy = n => v => (v % n === 0)
const divBy3 = divBy(3);
const divBy5 = divBy(5);
const all = (n, xs) => xs.reduce((p, c) => p && c(n), true);
const divBy15 = n => all(n, [ divBy3, divBy5 ]);

const fizbuzz = n => range(n)
  .map(n =>
    divBy15(n) ? `FizzBuzz (${n})` :
    divBy3(n) ? `Fizz (${n})` :
    divBy5(n) ? `Buzz (${n})` : n);

const fb = fizbuzz(100);
console.log(fb.join(', \n'));