Starting in Node 10.3, you can have async for...of loops

async function() {
  for await (const item of interable) {
  }
}

and in Node 8, we could still use an iterator to return promises to for...of

 
async function foo() {
  for (const _item of iterable) {
    const item = await _item;
  }
}

It would be a good idea to add a Symbol.iterator method to our cursors to allow them to be used in for...of loops