TypeError: s is not a function at t.createWindow

[pranavks]

Started getting this error from today in Next.js 15.1.4. This happens only at runtime in production builds.

There's a similar issue about the same error for Next.js 15.2.+. I think the latest releases made the issue appear in more Next.js versions.

 ⨯ TypeError: s is not a function
    at t.createWindow (.next/server/chunks/4222.js:21:559269)
    at new w (.next/server/chunks/4222.js:21:554535)
    at <unknown> (.next/server/chunks/4222.js:4:60472)
    at 18175 (.next/server/chunks/4222.js:4:60509)
    at t (.next/server/webpack-runtime.js:1:511)
    at 271813 (.next/server/chunks/4284.js:1:12074)
    at t (.next/server/webpack-runtime.js:1:511)
    at 892212 (.next/server/chunks/4284.js:1:10120)
    at t (.next/server/webpack-runtime.js:1:511)
    at 226159 (.next/server/app/(frontend)/blog/[slug]/page.js:1:8558)

[kkomelin]

Thanks for reporting @pranavks . What's your isomorphic-dompurify version? Did you try https://github.com/kkomelin/isomorphic-dompurify/releases/tag/2.26.0 ?

[pranavks]

Yes i got the issue with 2.26.0 @kkomelin

Another thing is for some reason the issue happens on random builds for me. So if you're trying to reproduce I'd suggest few retries.

[kkomelin]

@pranavks Ah, interesting. Thank you