I'm using pages router and I've tried adding this in multiple places (_document, next.config.js, getServerSideProps) but it looks like third party library that make fetch requests doesn't use my function.

const _fetch = fetch
fetch = async function (...args: Parameters<typeof _fetch>) {
  return myFetchFunc.apply(this, [...args, _fetch])
}

The library that I'm speaking of, that triggers fetch requests, is next-drupal and it is using fetch api