36 lines
702 B
JavaScript
36 lines
702 B
JavaScript
|
let Prefixer = require('./prefixer')
|
||
|
|
|
||
|
|
class AtRule extends Prefixer {
|
||
|
|
/**
|
||
|
|
* Clone and add prefixes for at-rule
|
||
|
|
*/
|
||
|
|
add(rule, prefix) {
|
||
|
|
let prefixed = prefix + rule.name
|
||
|
|
|
||
|
|
let already = rule.parent.some(
|
||
|
|
i => i.name === prefixed && i.params === rule.params
|
||
|
|
)
|
||
|
|
if (already) {
|
||
|
|
return undefined
|
||
|
|
}
|
||
|
|
|
||
|
|
let cloned = this.clone(rule, { name: prefixed })
|
||
|
|
return rule.parent.insertBefore(rule, cloned)
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Clone node with prefixes
|
||
|
|
*/
|
||
|
|
process(node) {
|
||
|
|
let parent = this.parentPrefix(node)
|
||
|
|
|
||
|
|
for (let prefix of this.prefixes) {
|
||
|
|
if (!parent || parent === prefix) {
|
||
|
|
this.add(node, prefix)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = AtRule
|