How to implement refresh token? about fetch-intercept HOT 4 OPEN

./src/interceptor.js
  Line 22:13:  'Services' is not defined  no-undef

import React, { useState, useEffect } from 'react'
import fetchIntercept from 'fetch-intercept'
const baseurl = process.env.REACT_APP_API_BASE_URL
export const interceptorVariable = fetchIntercept.register({
  request: function (url, config) {
    var token = localStorage.getItem('loginToken')
    // Modify the url or config here
    if (url.includes(baseurl)) {
      config.headers = { Authorization: token }
    }
    return [url, config]
  },

  requestError: function (error) {
    // Called when an error occured during another 'request' interceptor call
    return Promise.reject(error)
  },

  response: function (response) {
    // Modify the reponse object
    // return response
    if (response.status == 401) {
      Services.refreshToken((res)=>{
        console.log("tok",res)
        if (res.message == 'success') {
          // if token has been refreshed
          // recall the request again
        }else {
          // login again
        }
      })
    }else {
      return response;
    }
  },

  responseError: function (error) {
    // Handle an fetch error
    return Promise.reject(error)
  },
})```