@starting-style is reported as an unknown at rule by svelte-check

[simpliston]

Describe the bug

If I use @starting-style, svelte-check reports it as an unknown at rule:

Warn: Unknown at rule @starting-style (css)

                        @starting-style {
                                opacity: 0;

This is not reported as an unknown at rule by stylelint or biomejs

Reproduction

In any .svelte file in a svelte project, use @starting-style. Run svelte-check

Expected behaviour

The at rule should be recognized and not reported as unknown

System Info

• OS: Arch with Linux kernel 6.11.9-arch1-1 (64-bit)
• IDE: VSCode 1.95.3
• Extension: Svelte for VS Code v109.2.4
• svelte-check: 4.0.9

Which package is the issue about?

svelte-check

Additional Information, eg. Screenshots

No response

[Rican7]

This just bit me. It looks like it's supported in Svelte, but the error still shows up in svelte-check.

[dummdidumm]

This is an upstream problem - we're using VS Code's CSS language service for these diagnostics, and it doesn't know about those rules yet.

[simpliston]

This is an upstream problem - we're using VS Code's CSS language service for these diagnostics, and it doesn't know about those rules yet.

Looks like there is an issue with a PR connected, so we might see this fixed soon