code: function addDisplayPageConfig(pages, sourceDir, configFile) {
      let path = relative(configFile.fullPath, sourceDir);
      let {pageName} = getPageInfo(path);
      let currPageDisplayInfo = pages[pageName];
      let pageConfig = JSON.parse(configFile.content);
  
      let result = {};
      // filter the illegal not supported config item
      // and map the weixin config name to quick app
      Object.keys(pageConfig).forEach(k => {
          let newKey = DISPLAY_PAGE_CONFIG_MAP[k];
          if (newKey) {
              result[newKey] = pageConfig[k];
          }
      });
  
      // merge the page config, the config defined in page has higher priority
      // than the app config
      pages[pageName] = Object.assign({}, currPageDisplayInfo, result);
  }
docs: Add display page config info based the config defined in page
  
  @inner
  @param {Object} pages the existed display page config
  @param {string} sourceDir the project source directory
  @param {Object} configFile the config file