Simple requestretry

fetchretry.js

/**
 * @param {RequestInfo} opts
 * @param {number} maxRetries
 * @param {number} retryDelay
 */
const fetchRetry = async (opts, maxRetries, retryDelay) => {
  let error
  for (let i = 0; i < maxRetries; i++) {
    try {
      if (i > 0) {
        await timeout(retryDelay)
        return await fetch(opts)
      }
    } catch (err) {
      error = err
    }
  }
  throw error
}