text: const bus = require('@gotoeasy/bus');
  
  bus.on('页面目标CSS文件名', function(){
  
      return function(srcFile){
          let env = bus.at('编译环境');
          return env.path.build_dist + srcFile.substring(env.path.src.length, srcFile.length-6) + '.css'; 
      };
  
  }());
  