fetch-retry-with-curry.js

/**
 * A **Smarter** retry wrapper with currying!
 */
function retryCurry(fn, retriesLeft = 5) {
  const retryFn = (...args) => fn(...args)
    .catch(err => retriesLeft > 0
      ? retryFn(fn, retriesLeft - 1)
      : Promise.reject(err)
    })
  return retryFn
}

const getJson = (url) => fetch(url)
  .then(response => response.json())

// Usage
const retryGetJson = retryCurry(getJson, 3);

// Now you can pass any arguments through to your function!
retryGetJson('https://api.github.com/orgs/elite-libs')
  .then(console.log)
  .catch(console.error)

fetch-with-retries.js

/** Basic retry wrapper for Promises */
function retryPromise(fn, retriesLeft = 5) {
  return fn()
    .catch(err => retriesLeft > 0
      ? retryPromise(fn, retriesLeft - 1)
      : Promise.reject(err)
    })
}

const getJson = (url) => fetch(url)
  .then(response => response.json())

// Usage
retry(() => getJson('https://api.github.com/orgs/elite-libs'))
  .then(console.log)
  .catch(console.error)