iteratorES6.js

import { iterator } from "std:iteration";

const iterable = {
  *[iterator]() {
    yield 1;
    yield 2;
    yield 3;
  }
}

for (let x of iterable) {
  console.log(x);
}


const lazySequence = (for (x of a) for (y of b) x * y);
for (let z of lazySequence) {
  console.log(z);
}