nl_tokens: 获取默认构建配置文件
pl_tokens: function getDefaultBuildConfig ( appType ) { if ( appType === 'base' ) { throw new <mask> ( 'illegal app type' , appType ) ; } let defaultConfPath = path . join ( __dirname , '..' , 'config' , ` ${ appType } ` ) ; if ( fileUtil . isFileExists ( defaultConfPath ) ) { return require ( defaultConfPath ) ; } else { return require ( '../config/base' ) ; } }