Promises retry maxTries

promise-retry.js

function waitFor (time, promiseFn = () => {}) {
  const wait = new Promise(resolve => {
    setTimeout(resolve, time);
  });

  return Promise.all([promiseFn, wait]).then(
    args => args[0] && typeof args[0] === 'function' && args[0](),
    () => Promise.reject('Error in waitFor')
  );
}

const retry = (func, maxTries, delay, onFail = () => {}) => {
  return Promise.resolve()
    .then(func)
    .catch(
      err =>
        maxTries > 1
          ? Promise.resolve()
            .then(onFail.bind(null, maxTries))
            .then(() =>
              waitFor(
                delay,
                retry.bind(null, func, --maxTries, delay, onFail)
              )
            )
          : Promise.reject(err)
    );
};