<===> input.scss
$map: (a:b,c:d) + 1;

<===> error
Error: (a: b, c: d) isn't a valid CSS value.
        on line 1 of input.scss
  Use --trace for backtrace.

<===> error-dart-sass
Error: (a: b, c: d) isn't a valid CSS value.
  ,
1 | $map: (a:b,c:d) + 1;
  |       ^^^^^^^^^^^^^
  '
  input.scss 1:7  root stylesheet