wishthis/node_modules/autoprefixer/lib/hacks/appearance.js

let Declaration = require('../declaration')
let utils = require('../utils')

class Appearance extends Declaration {
  constructor(name, prefixes, all) {
    super(name, prefixes, all)

    if (this.prefixes) {
      this.prefixes = utils.uniq(
        this.prefixes.map(i => {
          if (i === '-ms-') {
            return '-webkit-'
          }
          return i
        })
      )
    }
  }
}

Appearance.names = ['appearance']

module.exports = Appearance