Comments (4)
Lots of the parsing code and most of the AST documentation is about the myriad of different at-rules. I’d suggest we’d parse them like this instead:
- type:
'at-rule'
- name:
String
. The part directly after the@
, such as “media”, “viewport”, “charset”, “whatever”. - value:
String
. The part that comes after the name, and before the;
or{
. This string may be empty. - declarations:
Array
of nodes with the typesdeclaration
andcomment
, or null. If the at-rule has a block, and that block can be parsed as declarations this property represents those declarations. Otherwise it isnull
.@page
is an example. - rules:
Array
of nodes with the typesrule
,at-rule
andcomment
, or null. If the at-rule has a block, and that block can be parsed as rules this property represents those rules. Otherwise it isnull
.@media
is an example.
All at-rules have .value
. Some have .declarations
. Some have .rules
. Some have neither (such as @charset
), but none have both.
Pros:
- Future at-rules automatically supported.
- Simpler code.
- Less properties to know about in the AST: no more
.media
,.document
,.charset
, etc.—just.value
! - Less documentation to read.
- Consistent with the rest of the parsing: Only parse syntax, not semantics.
This would be for css 3.0.
from css.
Yeah that sounds good.
from css.
👍
from css.
+1
We have the same issue when parsin third party css (AlloyUI)
@-ms-viewport {
.wrapper {
width: device-width; } }
@-ms-keyframes progress-bar-stripes {
.aui from {
background-position: 40px 0; }
.aui to {
background-position: 0 0; } }
Is causing error: missing '}'
from css.
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from css.