Code retry with promises

index.js

// Author: Renat Tuktarov ([email protected])

const retry = function(fn, prev) {
  return new Promise((current, reject) => {
    const resolve = _ => (prev && prev()) || current();

    fn(resolve, delay => {
      setTimeout(_ => {
        retry(fn, resolve);
      }, delay);
    });
  });
};

function run() {
  let attempt = 1;

  retry((done, retry) => {
    console.log('attempt: ', attempt);
    if (attempt !== 3) {
      attempt += 1;
      retry(1000);
    } else {
      done();
    }
  });
}

run();