Language Server apparent infinite loop

[PhilipTrauner]

What version of Tailwind CSS are you using?

4.1.8

What operating system are you using?

macOS

Reproduction URL

@theme {
    --color-label: rgb(from var(--color-label) r g b);
}

@utility color-scheme-light {
    --color-label: black;
}

@utility color-scheme-dark {
    --color-label: white;
}

@layer base {
    @media (prefers-color-scheme: light) {
        :root {
            @apply color-scheme-light;
        }
    }

    @media (prefers-color-scheme: dark) {
        :root {
            @apply color-scheme-dark;
        }
    }
}

Describe your issue

when porting the pattern above from Tailwind v3, i noticed that the Tailwind language server became caught in what appears to be an infinite loop.
building (with postcss) still succeeds, and does not consume excessive resources.

the same behavior does not occur when using a different, non-shadowed, variable name.

@theme {
    --color-label: rgb(from var(---color-label) r g b);
}

@utility color-scheme-light {
    ---color-label: black;
}

@utility color-scheme-dark {
    ---color-label: white;
}

if my assumption is correct, and the name shadowing is the root cause here, i would not mind if shadowing was flagged as an error.

[thecrypticace]

I thought I had fixed this 🤔

Will take a look!

[thecrypticace]

@PhilipTrauner Are you sure you're on the latest language server / VSCode extension version? If so can you provide a reproduction project I can clone?

[PhilipTrauner]

@thecrypticace will put together an example project in a short while, but until then, some here's more details:

• i'm using Zed, which uses version 0.14.20 of @tailwindcss/language-server
• the rpc message that causes the infinite loop is the following

  {"jsonrpc":"2.0","id":182,"method":"completionItem/resolve","params":{"label":"text-label","kind":21,"sortText":"18330","data":{"_projectKey":"0","variants":[]}}}

• hovering (textDocument/hover) does not cause the loop

[thecrypticace]

@PhilipTrauner Ooooh yep I can reproduce the resolve causing a freeze. Thanks! Can forget about the repro then!

[thecrypticace]

I plan to get a release out with this fix soon (hopefully today)