polling function with the ability to cancel

poll.js

function poll({ fn, validate, interval = 1000, maxAttempts = 100 }) {
  let attempts = 0;
  let stop = false;
  async function execute(resolve, reject) {
    const res = await fn();
    attempts += 1;
    if (validate(res)) {
      resolve(res);
    } else if (maxAttempts === attempts) {
      return reject("Hit max poll attempts");
    } else if (!stop) {
      setTimeout(execute, interval, resolve, reject);
    }
  }
  function clear() {
    stop = true;
  }
  return [new Promise(execute), clear];
}