type Fetch = typeof fetch

export const resolveFetch = (customFetch?: Fetch): Fetch => {
  let _fetch: Fetch
  if (customFetch) {
    _fetch = customFetch
  } else if (typeof fetch === 'undefined') {
    _fetch = (...args) =>
      import('@supabase/node-fetch' as any).then(({ default: fetch }) => fetch(...args))
  } else {
    _fetch = fetch
  }
  return (...args) => _fetch(...args)
}

export const resolveResponse = async (): Promise<typeof Response> => {
  if (typeof Response === 'undefined') {
    // @ts-ignore
    return (await import('@supabase/node-fetch' as any)).Response
  }

  return Response
}