| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849 | let Declaration = require('../declaration')let flexSpec = require('./flex-spec')class AlignContent extends Declaration {  /**   * Return property name by final spec   */  normalize() {    return 'align-content'  }  /**   * Change property name for 2012 spec   */  prefixed(prop, prefix) {    let spec    ;[spec, prefix] = flexSpec(prefix)    if (spec === 2012) {      return prefix + 'flex-line-pack'    }    return super.prefixed(prop, prefix)  }  /**   * Change value for 2012 spec and ignore prefix for 2009   */  set(decl, prefix) {    let spec = flexSpec(prefix)[0]    if (spec === 2012) {      decl.value = AlignContent.oldValues[decl.value] || decl.value      return super.set(decl, prefix)    }    if (spec === 'final') {      return super.set(decl, prefix)    }    return undefined  }}AlignContent.names = ['align-content', 'flex-line-pack']AlignContent.oldValues = {  'flex-end': 'end',  'flex-start': 'start',  'space-around': 'distribute',  'space-between': 'justify'}module.exports = AlignContent
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