Angular : How to extend HttpClient?

angular api httpclient interceptor

Instead of extending HttpClient, I would take one of three approaches:

Have each of your Interceptors inspect the URL of the request, and either do it's work, or just call next.handle(req) without doing anything else, depending on the URL

or

Write a delegating Interceptor, that decides which other Interceptors to delegate to, depending on your requirements.

or

Just write one big Interceptor that decides what do based on the URL / whatever you need.

My gut would be to go with #1