Type hints in Codec class

[Alexey-Kamenev]

I've noticed that Codec class methods, such as encode and decode, do not use type hints. Is this intentional or something that can be added in the future?

[martindurant]

It is not intentional - this code mostly predates type-hinting as normal practice in python. If you made a PR to add, it would probably be accepted, assuming you can find good definitions for "buffer-like" and similar.

[madsbk]

I think it would be very valuable if numcodecs implements a protocol type for buffer-like similar to what we have for array-likes that we can use throughout the Zarr ecosystem.

[jakirkham]

In terms of typing Buffer, this is getting better. Please see PEP 688