How to pass `CleanCSS` options via `minifyCSS`?

[john-doherty]

I'm trying to pass Clean CSS options via the minifyCSS property, according to the docs, I should be able to pass:

minifyCSS: {
    format: {
        semicolonAfterLastProperty: false
    }
}

But it has not affect. What am I missing?

[j9t]

If of interest, HTML Minifier Next (compatible successor project) uses Lightning CSS which should make such fine-tuning easy. See e.g. the docs in the HMN repo.