| 123456789101112131415161718192021222324252627282930313233343536373839404142 | let Declaration = require('../declaration')class WritingMode extends Declaration {  insert(decl, prefix, prefixes) {    if (prefix === '-ms-') {      let cloned = this.set(this.clone(decl), prefix)      if (this.needCascade(decl)) {        cloned.raws.before = this.calcBefore(prefixes, decl, prefix)      }      let direction = 'ltr'      decl.parent.nodes.forEach(i => {        if (i.prop === 'direction') {          if (i.value === 'rtl' || i.value === 'ltr') direction = i.value        }      })      cloned.value = WritingMode.msValues[direction][decl.value] || decl.value      return decl.parent.insertBefore(decl, cloned)    }    return super.insert(decl, prefix, prefixes)  }}WritingMode.names = ['writing-mode']WritingMode.msValues = {  ltr: {    'horizontal-tb': 'lr-tb',    'vertical-lr': 'tb-lr',    'vertical-rl': 'tb-rl'  },  rtl: {    'horizontal-tb': 'rl-tb',    'vertical-lr': 'bt-lr',    'vertical-rl': 'bt-rl'  }}module.exports = WritingMode
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