Looking at the source of this plugin, this option is indeed supported (as you are just spreading the options passed to the plugin to swc), so maybe it's be worth updating the docs to reflect this (or just saying that all options from swcs minify are allowed)?
Looking at the source of this plugin, this option is indeed supported (as you are just spreading the options passed to the plugin to swc), so maybe it's be worth updating the docs to reflect this (or just saying that all options from swcs minify are allowed)?