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