nl_tokens: 对旧的配置项做兼容
pl_tokens: function adjustOldProperty ( config ) { if ( ! config . input . cssSource && 'cssRoot' in config . input ) { config . input . cssSource = config . input . cssRoot ; delete config . input . cssRoot ; } if ( ! config . output . cssDist && 'cssRoot' in config . output ) { config . output . cssDist = config . output . cssRoot ; delete config . output . cssRoot ; } if ( ! config . output . imageDist && 'imageRoot' in config . output ) { config . output . imageDist = config . output . imageRoot ; delete config . output . imageRoot ; } if ( ! config . output . maxSingleSize && 'maxSize' in config . <mask> ) { config . output . maxSingleSize = config . output . maxSize ; delete config . output . maxSize ; } return config ; }