Axios response interceptor for handling http 401 errors & dealing with token refresh. #javascript

401Interceptor.js

 axios.interceptors.response.use(function(response) {
        return response;
      }, async function(error) {
          await new Promise(function(res) {
            setTimeout(function() {res()}, 10000);
            });
      
        const originalRequest = error.config;
      
        if (error.response.status===401 && !originalRequest._retry) {
          originalRequest._retry = true;
          const refreshedHeader = await setHeader()
          console.log('New header: ', refreshedHeader)
          axios.defaults.headers = refreshedHeader
          originalRequest.headers = refreshedHeader
          console.log('Original Request: ', originalRequest)
          return axios(originalRequest);
        }
        return Promise.reject(error);
      });