axios.js

import axios from 'axios';
axios.interceptors.request.use(
  function (config) {

    let token = localStorage.getItem('access_token');

    if (token && token !== 'null') {
      config.headers.common['Authorization'] = 'Bearer ' + token;
    }
    return config;
  },
  function (error) {
    return Promise.reject(error);
  }
);

axios.interceptors.response.use(
  function (response) {
    return response;
  },
  function (error) {

    if (error.config.url === '/me') {
        //do something different
    } else {
      return Promise.reject(error);
    }
  }
);