getStaticProps should not be able to fetch same-app API endpoints in development

[Timer]

Feature request

Next.js should make an attempt to block requests to same-app API endpoints (i.e. localhost) from getStaticProps during next dev since they'll fail when next build is run.

I'm not sure if this is even possible!

Describe the solution you'd like

For the following code, we should throw an error somehow:

export async function getStaticProps() {
  await fetch(`http://localhost:3000/api/journals`); // etc
  // ... rest
}

[timneutkens]

We can do it using the new babel plugin warning system, however that will only get us as far as fetch() usage inside of getStaticProps/getServerSideProps and not if it's being done in another file. However that might be fine for now 👍

[geremora]

I'm having the same situation.

I want to make a request to the same-app API endpoints on the getStaticPaths.

In development works when I run both, next dev and next build at the same time.

[github-actions]

Please verify that your issue can be recreated with next@canary.

Why was this issue marked with the please verify canary label?

We noticed the provided reproduction was using an older version of Next.js, instead of canary.

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[balazsorban44]

This issue has been automatically closed because it wasn't verified against next@canary. If you think it was closed by accident, please leave a comment. If you are running into a similar issue, please open a new issue with a reproduction. Thank you.

[github-actions]

This closed issue has been automatically locked because it had no new activity for a month. If you are running into a similar issue, please create a new issue with the steps to reproduce. Thank you.