Next build stalls at Checking validity of types...

What version of Next.js are you using?

12.0.7

What version of Node.js are you using?

16.3.0

What browser are you using?

chrome

What operating system are you using?

macOS monterey

How are you deploying your application?

vercel

Describe the Bug

next build stalls indefinitely at info - Checking validity of types .

Expected Behavior

It shouldn’t stall, or at least give an error / exception

To Reproduce

clone https://github.com/cjroebuck/next-build-stalled

npm i
npm run build

observe that terminal locks up at info - Checking validity of types ...

In order to get the build to pass, comment out this line

This I believe is the offending file / method call:
https://github.com/cjroebuck/next-build-stalled/blob/main/src/lib/docs/remark-paragraph-alerts.ts#L27

By renaming the file to something else i.e. remark-paragraph-alerts.ts.notused, to remove it from the ts build, the build will not stall…

I assume it is an issue with the types for the unist-util-visit module, so will raise an issue over their too pointing back here.

It is strange that next build stalls, however running tsc in the directory does seem to work ok.

[balazsorban44]

Seems to be reported here already: https://github.com/microsoft/TypeScript/issues/46900

[cjroebuck]

@balazsorban44 Yep I came across that issue when looking for similar issues, that’s why I made sure tsc was not having any issues before posting 😊