code: function compile(file, options) {
      const {resolve: resolveDep, logger} = options;
  
      try {
          let componentConf = JSON.parse(file.content.toString());
          let usingComponents = componentConf[USING_COMPONENT_KEY];
          if (!usingComponents || !file.component) {
              return {content: file.content};
          }
  
          let result = {};
          let scriptFile = file.component;
          Object.keys(usingComponents).forEach(k => {
              let value = usingComponents[k];
              if (!value) {
                  return;
              }
  
              let resolvePath = resolveDep(
                  scriptFile, value
              );
              result[toHyphen(k)] = resolvePath || value;
  
              let resolveModInfo = scriptFile.resolvedModIds[value];
              let componentFile = resolveModInfo && resolveModInfo.file;
              componentFile && analyseNativeComponent(componentFile, options);
          });
  
          // update usingComponent information
          componentConf[USING_COMPONENT_KEY] = result;
  
          return {
              content: JSON.stringify(componentConf, null, 4)
          };
      }
      catch (ex) {
          logger.error(
              `Parse component config ${file.path} fail`,
               ex.stack || ex.toString()
          );
      }
  
      return {content: file.content};
  }
docs: Process the component dependence sub components based on `usingComponent`
  info defined in json.
  
  @param {Object} file the file to process
  @param {Object} options the compile options
  @return {{content: string}}