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import pRetry from 'p-retry'

const fetchClient = async (input, init) => {
  try {
    if (input instanceof URL || typeof input === 'string') {
      return await fetchWithRetries({ url: input, ...init })
    }

    return await fetchWithRetries({ ...input, ...init })
  } catch (e) {
    console.error(e)
    throw e
  }
}

async function fetchWithRetries({
  url,
  retries = 5,
  timeout = 3 * 1000,
  shouldRetry = (res) => !res.ok,
  ...requestInit
}) {
  try {
    return await pRetry(
      async (attemptCount) => {
        const res = await fetch(url, {
          ...requestInit,
          signal: AbortSignal.timeout(timeout),
        })

        if (shouldRetry(res) && attemptCount < retries) {
          throw new ResponseNotOkayError(url, res)
        }

        return res
      },
      { retries, randomize: true }
    )
  } catch (e) {
    if (e instanceof DOMException) {
      throw new RequestTimedOutError(url, timeout, retries)
    } else {
      throw e
    }
  }
}

class ResponseNotOkayError extends Error {
  constructor(url, res) {
    super(`Request to ${url} was not okay`)
  }
}

class RequestTimedOutError extends Error {
  constructor(url, timeout, retries) {
    super(
      `Request to ${url} timed out ${retries} times each after ${timeout}ms`
    )
  }
}

import pRetry from 'p-retry'

const fetchClient = async (input, init) => {
  try {
    if (input instanceof URL || typeof input === 'string') {
      return await fetchWithRetries({ url: input, ...init })
    }

    return await fetchWithRetries({ ...input, ...init })
  } catch (e) {
    console.error(e)
    throw e
  }
}

async function fetchWithRetries({
  url,
  retries = 5,
  timeout = 3 * 1000,
  shouldRetry = (res) => !res.ok,
  ...requestInit
}) {
  try {
    return await pRetry(
      async (attemptCount) => {
        const res = await fetch(url, {
          ...requestInit,
          signal: AbortSignal.timeout(timeout),
        })

        if (shouldRetry(res) && attemptCount < retries) {
          throw new ResponseNotOkayError(url, res)
        }

        return res
      },
      { retries, randomize: true }
    )
  } catch (e) {
    if (e instanceof DOMException) {
      throw new RequestTimedOutError(url, timeout, retries)
    } else {
      throw e
    }
  }
}

class ResponseNotOkayError extends Error {
  constructor(url, res) {
    super(`Request to ${url} was not okay`)
  }
}

class RequestTimedOutError extends Error {
  constructor(url, timeout, retries) {
    super(
      `Request to ${url} timed out ${retries} times each after ${timeout}ms`
    )
  }
}