How to get all compression formats?

[bronger]

I use github.com/go-chi/chi/v5/middleware.Compress(5).

I need to expose the supported compression encoders in the XML response of my server. (To be concrete, it is the <compression> tag in OAI-PMH.) How do I get them? I can hardcode ["gzip", "deflate"] but this might change in the future.

[VojtechVitek]

I think you can hardcode gzip and deflate. They will not go away.

The compress middleware doesn't have GetEncoders() method right now, perhaps it could be added. But then you'd have to instantiate your Compressor by hand.