Error: Undefined operation: "1.5 times .875rem"

[sstikkel]

I had to downgrade to gulp-sass 3.0.0. It's bug in libsass sass/libsass#2309. So it should solve this by upgrading libsass and node sass to the latest version.

[xzyfer]

Closed by #666

[sovanyio]

Still getting this on 3.2.0

Error in plugin 'sass'
Message:
    file.scss
Error: Undefined operation: "3 times 0.375em".
        on line 18 of file.scss
        from line 15 of other-file.scss
>>   padding-left: 3 * $s-units--base-spacing;

   ----------------^

Works on 2.3.2

[JanikWeb]

Same here:

Error: Undefined operation: "2 times 1sqrt(5)/2".Error: Undefined operation: "2 times 1sqrt(5)/2".

[xzyfer]

Please provide actual sass code that produces this error so we that we can reproduce it locally

…

On Fri., 23 Mar. 2018, 12:30 am JanikWeb, ***@***.***> wrote: Same here: Error: Undefined operation: "2 times 1sqrt(5)/2".Error: Undefined operation: "2 times 1sqrt(5)/2". — You are receiving this because you modified the open/close state. Reply to this email directly, view it on GitHub <#611 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAjZWICXNyNxXBVWdoPzv8Cmqo1ZyPiYks5tg6dZgaJpZM4N64SJ> .

[sovanyio]

@JanikWeb are you using interpolation? Found out that arithmetic doesn't work against interpolated strings.

[ryyy20]

@sovanyio does that mean you can't do something like this:

$font-size-base: rems(18) !default; // Assumes the browser default, typically 16px ///////// $font-size-lg: $font-size-base * 1.25 !default;

cause I get the same error: Undefined operation: 'rems(18) times 1.25'
using node-sass@4.8.3

[cartbeforehorse]

From what I've discovered, it depends on what rems() does, and how it does it.
If it returns: #{calculated-rem}rem;, (which I've seen in some solutions), then further calculations are not possible, because the returned value is seen by the compiler as being a string (which you can't do math on).
If it returns: ($size-px / 16px) * 1rem;, then further calculations are possible because the returned value is a calculable number.

[nachtfunke]

From what I've discovered, it depends on what rems() does, and how it does it.
If it returns: #{calculated-rem}rem;, (which I've seen in some solutions), then further calculations are not possible, because the returned value is seen by the compiler as being a string (which you can't do math on).
If it returns: ($size-px / 16px) * 1rem;, then further calculations are possible because the returned value is a calculable number.

Thank you very much, this was the solution that I needed! @cartbeforehorse