basant307/AI_Governance_Project

1let Prefixer = require('./prefixer')2 3class AtRule extends Prefixer {4  /**5   * Clone and add prefixes for at-rule6   */7  add(rule, prefix) {8    let prefixed = prefix + rule.name9 10    let already = rule.parent.some(11      i => i.name === prefixed && i.params === rule.params12    )13    if (already) {14      return undefined15    }16 17    let cloned = this.clone(rule, { name: prefixed })18    return rule.parent.insertBefore(rule, cloned)19  }20 21  /**22   * Clone node with prefixes23   */24  process(node) {25    let parent = this.parentPrefix(node)26 27    for (let prefix of this.prefixes) {28      if (!parent || parent === prefix) {29        this.add(node, prefix)30      }31    }32  }33}34 35module.exports = AtRule36