Get Prime Numbers using JavaScript Generator [ECMAScript]

prime.js

function* from(i) { while (true) { yield i; i++; } }

function* genFilter(gen, cond) {
  for (let e of gen) { if (cond(e)) yield e; }
}

function* prime(gen) {
  let head = gen.next().value;
  yield head;
  yield* prime(genFilter(gen, (x) => x % head !== 0));
}

function* take(gen, num) {
  let i = 0;
  while (i < num) {
    yield gen.next().value;
    i++;
  }
}

let primes = prime(from(2));

console.log(...take(primes, 10));