Custom rule block. about css

[conradz]

No, it basically only parses valid CSS code (mixin(a1, a2) is not a valid selector in CSS). You can see rework-plugin-mixin which does mixins that are specified in JS and used by using normal CSS properties.

The $var: value case could be easily implemented by relaxing the requirements for the property name. @necolas @jonathanong do you think we should do this?

EDIT: mixin(a1, a2) { } does parse correctly with mixin(a1, a2) as a selector string.

[necolas]

blah(a, b) just gets parsed as a selector; you can write a plugin to do something with it.

since this isn't a validating parser we could probably relax the property name parsing though.

But what about this
For example:

$color: #fff;

.selector {
  color: $color;
}

Can I do something for parse this rule? Is it possible?

[necolas]

That's an invalid CSS syntax, so no. We have 2 working variables plugins you can use though:

https://github.com/reworkcss/rework-vars
https://github.com/reworkcss/rework-variables

[ai]

If you just need to parse this syntax, you can use gonzales-pe. Also there is xcss postprocessor, which can works with custom syntax.

@ai, thx. Mb, I'll try to create one another)