| 1234567891011121314151617181920212223 | 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
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