Could not reduce expression: calc(0.25em - 1px)?

[davidhund]

Hi, I am using postcss-calc (which uses reduce-css-calc if I'm correct), thanks for your work.

I was under the impression that mixed units should work (I even saw some tests for it) so I am confused why the following throws an error:

Could not reduce expression: calc(.25em - 1px) [postcss-calc]

I am simply using it as:

.c-linklist a {
    display: block;
    padding-top: .25em;
    padding-bottom: calc(.25em - 1px);
}

Am I missing something?

[MoOx]

Mixed unit can only be computed at runtime, in the browser, so no this module can't handle that. There is not tests for that, just to that check to reduced result does not throw.

[davidhund]

Right, makes sense really. Thanks.