回调函数返回的函数使用闭包来添加额外的参数不会执行

Question

我正在尝试使用闭包概念来获取回调函数中的附加参数。出于某种原因，它无法正常工作。以下是供参考的代码。

export function loadConfigData(session) {

  return function(dispatch) {

    // API URL to get the config details
    const url = session.apiHost + '/config';

    const headers = {'Accept': 'application/json','Content-Type': 'application/json',key: session.key};

// Make fetch API call to get the config data with same-origin to enable fetch to send the cookie with API call.
    return fetch(url,{credentials: 'same-origin',headers,method: 'GET'})
      .then(processAPIResponse)
      .then(loadConfigDataSuccessHandler)     
      .catch(loadConfigDataErrorHandler);
  }
}

export const processAPIResponse = (response)=> {
  if ( !response.ok ) {
    return Promise.reject(response);
  }
  return Promise.resolve(response.json());
};

export const loadConfigDataErrorHandler = (response)=> {
  return function(dispatch) {
    dispatch(receiveConfigError(new Error("Bad response from server")));
    return Promise.reject(response);
  };
};

export const loadConfigDataSuccessHandler = (configObj)=> {
  // Following function is not getting execute.
  return function(dispatch) {
  // In case of success, start action to update the data
  dispatch(receiveConfigData(configObj));
  // Resolve promise
  return Promise.resolve(configObj);
  };
};

问题：由于某种原因，“loadConfigDataSuccessHandler”返回的函数没有得到执行，因此我的成功处理程序上的业务逻辑没有执行。

注意：此代码段来自redux-action，因此请忽略使用“dispatch”

使用回调更新的工作代码：

要添加更多细节，如果不使用闭包和回调那么它可以工作，但是，我认为这不是一个干净的方法。以下是有效的回调方法。

export const loadConfigDataSuccessHandler = (configObj,dispatch)=> {

  // In case of success, start action to update the data
  dispatch(receiveConfigData(configObj));
  return configObj;
};

export const loadConfigDataErrorHandler = (response,dispatch)=> {
  dispatch(receiveConfigError(new Error("Bad response from server")));
  return response;
};

export function loadConfigData(session) {

  return function(dispatch) {

    // Request to load the user data, set loading flag is true to show loading screen
    dispatch(requestConfigData());

    // API URL to get the user details
    const url = session.apiHost + API_CONTEXT_PATH + '/config';

    const headers = getHTTPHeader(session.blueboxpublic,session.blueboxvalues);
    // Make fetch API call to get the user data with same-origin to enable fetch to send the cookie with API call.
    return fetch(url,{credentials: 'same-origin',headers,method: 'GET'})
      .then(processAPIResponse)
      .then((configObj)=>loadConfigDataSuccessHandler(configObj,dispatch))
      .catch((configObj)=>loadConfigDataErrorHandler(configObj,dispatch))
      .catch(handleAPISystemDown)
      .catch(loadConfigDataErrorHandler);
  }
}