Examples for https://medium.com/p/651f4b7d45cf/edit

example2.js

function getErroringPromise() {
  console.log('getErroringPromise called');
  return Promise.reject(new Error('sad'));
}

Observable.defer(getErroringPromise)
  .retry(3)
  .subscribe(x => console.log);

// logs "getErroringPromise called" 4 times (once + 3 retries), then errors