Interceptors

Interceptors run around every request. A request interceptor sees the config before it is sent; a response interceptor sees the response before it is returned (and can also reject).

const api = axios.create();

api.interceptors.request.use(
  (config) => {
    config.headers.Authorization = `Bearer ${token}`;
    return config;
  },
  (error) => Promise.reject(error)
);

api.interceptors.response.use(
  (response) => response,
  (error) => {
    if (error.response?.status === 401) {
      router.push("/login");
    }
    return Promise.reject(error);
  }
);

Order of execution

• Request interceptors run in reverse order of registration (last added, first called).
• Response interceptors run in registration order.

Both are managed by InterceptorManager (lib/core/InterceptorManager.js). An interceptor can be removed with the id returned by use().

Related

• Instance API
• Errors