'@snowpack/plugin-sass' is not in the npm registry.

[heikkilamarko]

It seems that the @snowpack/plugin-sass plugin is not yet published to npm registry, but it is present in the official docs.

[FredKSchott]

Thanks for catching that! We haven't really announced it yet, but you're right that it's documented. Published as 1.0.0!

[FredKSchott]

Ah, I just remembered that this does rely on a not-yet-released Snowpack feature. It works fine without it (on current latest snowpack), but Mixins and other @use imports may be outdated during dev and require a server restart to update.

We’ll get that new Snowpack release out in the next couple of days.