问Redux中间件:希望将响应头作为参数发送到中间件

EN

// function 1
return ApiCaller.post('url').then(json => {
  dispatch(someAction(json));
})

// function 2
return ApiCaller.post('anotherurl').then(json => {
  dispatch(someOtherAction(json));
})

// ApiCaller
fetch(url).then(response => {
  // before this I want to make another post call with data as response 
  // header 'x' value
  return response;
}