Method virtual

lib/supports.js:295–300

* Create virtual rule to process it by prefixer

(str)

   * Create virtual rule to process it by prefixer
   */
  virtual(str) {
    let [prop, value] = this.parse(str)
    let rule = parse('a{}').first
    rule.append({ prop, raws: { before: '' }, value })
    return rule
  }
}

module.exports = Supports