<===> input.sass
@include foo;

<===> error
Error: Invalid CSS after "": expected expression (e.g. 1px, bold), was ";"
        on line 1 of input.sass
  Use --trace for backtrace.

<===> error-dart-sass
Error: semicolons aren't allowed in the indented syntax.
  ,
1 | @include foo;
  |             ^
  '
  input.sass 1:13  root stylesheet