Generator sample with async funcions

sampleGenerator.js

'use strict';

let times = 1;
let processed = 0;
async function searchUsers(skip) {
  return new Promise((resolve) => {
    setTimeout(() => {
      if (skip > 32) {
        return resolve([]);
      }
      console.log('Call service: ', times++);
      return resolve(['a', 'b', 'c', 'd', 'e', 'f']);
    }, 2000);
  });
}

async function* fetchUsers() {
  let skip = 0;
  let fetchNextPage = true;

  while (fetchNextPage) {
    const cursorUsers = await searchUsers(skip);
    if (cursorUsers.length === 0) {
      fetchNextPage = false;
      break;
    }

    skip += cursorUsers.length;

    for await (const user of cursorUsers) {
      yield { processed: ++processed, user };
    }
  }
}

const users = fetchUsers();

(async () => {
  for await (const val of users) {
    console.log(`User ${val.user}: Users Processed: ${val.processed}`);
  }
})();

/********** OUTPUT
Call service:  1
User a: Users Processed: 1
User b: Users Processed: 2
User c: Users Processed: 3
User d: Users Processed: 4
User e: Users Processed: 5
User f: Users Processed: 6
Call service:  2
User a: Users Processed: 7
User b: Users Processed: 8
User c: Users Processed: 9
User d: Users Processed: 10
User e: Users Processed: 11
User f: Users Processed: 12
Call service:  3
User a: Users Processed: 13
...
 */