CSS Parsing error for ::scroll-marker

[tirtza-weinfeld]

::scroll-marker, ::scroll-marker-group, and scroll-marker-group property are not parsed.

Part of CSS Overflow Module Level 5 — shipped in Chrome 135+.

Error via Next.js Turbopack:

'scroll-marker' is not recognized as a valid pseudo-element.
Did you mean ':scroll-marker' (pseudo-class) or is this a typo?

CSS that triggers it:

.carousel {
  scroll-marker-group: after;
}

.carousel > *::scroll-marker {
  content: "";
}

.carousel > *::scroll-marker:target-current {
  background: oklch(0.5 0 0 / 0.6);
}

[yisibl]

See also: #1184

[devongovett]

It should only be a warning. Is Next.js failing the build or is it just shown as a warning? This is an early draft supported only in Chrome, with the other engines having concerns with it becoming a standard so I'm hesitant to fully support it yet.

Edit: Looks like Next.js is currently erroring on our warnings. I reached out to the Turbopack team about this.