Retry with delays

index.js

const operation = () => new Promise((resolve, reject) => {
  if (Math.random() > 0.8) {
    resolve('all good');
  } else {
    reject(new Error('failure'));
  }
});

const pause = duration => new Promise(resolve => setTimeout(resolve, duration));

const doWithRetries = (action, retries, delay) => {
  return new Promise((resolve, reject) => {
    action.call()
      .catch(() => {
        console.log('failed on run, retries: ', retries);
        if (retries > 1) {
          resolve(pause(delay)
            .then(() => doWithRetries(action, retries - 1, delay)));
        } else {
          reject(new Error('++ final retry failed'));
        }
      })
      .then(result => {
        resolve(result);
      });
  });
};

const doIt = async () => {
  try {
    const result = await doWithRetries(operation, 10, 250);
    console.log('+ success, result:', result);
  } catch (err) {
    console.error('+ failed', err)
  }
};

doIt();