[] lets you use round, rem and mod stepped value functions, following the [CSS Values 4] specification.

<example.css>

/* becomes */

<example.expect.css>

Given the dynamic nature of custom properties it's impossible to know what the variable value is, which means the plugin can't compute a final value for the stylesheet.

Because of that, any usage that contains a var is skipped.

The preserve option determines whether the original notation is preserved. By default, it is not preserved.

<exportName>({ preserve: true })

<example.css>

/* becomes */

<example.preserve-true.expect.css>