code: function fixDemoComponentHtml(component, folder) {
      var re = /<!-- ignore the following lines[\s\S]*<!-- start to learn the demo from here -->\r?\n/;
      component.code = component.code.replace(re, '');
  
      if (component.code.indexOf('jigsaw-demo-description') != -1) {
          console.error('ERROR: can not strip "jigsaw-demo-description" from html!');
          console.error(`       path=${folder}`);
          process.exit(1);
      }
  }
docs: 删除 jigsaw-demo-description 相关内容