statusCodesToRetry doesn't work when Http Status Code is 2xx

When specify statusCodesToRetry as 2xx, this doesn’t work because of the following code:

export function attach(instance?: AxiosInstance) {
  instance = instance || axios;
  return instance.interceptors.response.use(onFulfilled, onError);
}

onError will be only triggered when the Http Status Code is not 2xx. That means all retries this library will perform only works when Http Status Code is not 2xx.

[JustinBeckwith]

So to be honest - this is far enough outside the goal of the library, that I don’t want to add support for managing retries on 2xx responses. The interceptor API in axios is good enough that you should be able to plug in there, and lift whatever bits of backoff stuff you need from here. Apologies!

[shubhamd]

One of the ways we can implement this by not actually implementing this is - In axios-retry, we start catching the errors thrown by custom interceptors (request/response) of axios. In this way people can write their own custom interceptors and validate the data the way they want. @JustinBeckwith, Thoughts?