CSS not being compressed

[adamhl8]

I'm not able to compress the CSS generated by astro.

Error: Cannot compress file //dist/_astro/_slug_.CPIc14WV.css
Error: Cannot compress file //dist/_astro/_slug_.Dvd5riTk.css

In #376 it's mentioned that if a file doesn't need compression an error is thrown, but I don't think that's what's happening in my case.

I manually installed lightningcss and ran it on one of the files and it went from 52KB to 48KB, so it can definitely be compressed.

I thought it might be something with csso specifically, so I tried setting the parser to just lightningcss, but I still get the same error.

playformCompress({ Parser: { CSS: "lightningcss" } }),

If you'd like to reproduce, it's on the branch compress on my repo: https://github.com/adamhl8/adamhl.dev

[geepot]

Running into this same issue in my environment

[NikolaRHristov]

We found the error.

We're setting unusedSymbols to false in

Compress/Source/Variable/CSS/lightningcss.ts

Line 10 in c807585

unusedSymbols: false,

and it's producing the error:

Error: invalid type: boolean `false`, expected a sequence

As a hotfix I would recommend setting unusedSymbols to []:

import type { defineConfig } from "astro/config";

export default (await import("astro/config")).defineConfig({
	integrations: [
		(await import("@playform/compress")).default({
			CSS: {
				lightningcss: {
					unusedSymbols: [],
				},
			},
		}),
	],
}) as typeof defineConfig;

[NikolaRHristov]

Fixed in the latest @playform/compress@v0.1.5 and astro-compress@v2.3.4