test.js

export function fetchedUserFromApi(data) {
  return {
    type: FETCHED_USER_FROM_API,
    data: {
      isLoading: false,
      isError: false,
      ...data
    }
  }
}

export const fetchMe = () => dispatch => 
  fetch(`/me`, { method: 'GET' })
  .then(res => res.json())
  .then(data => dispatch(fetchedUserFromApi(data))
);