Since go does not have an explicit declaration of which interfaces one implements, it is hard to follow someone's code. I know that there is a command to show all the interfaces, but it is not very intuitive nor efficient.

Goland has the feature of showing a gutter when a function implements an interface. It would be nice to show maybe a codelens over the implementation and the type, or a similar solution as Goland.

Codelens:

Goland:

I found an extension that does kinda the opposite which is not very helpful in most scenario: galkowskit/go-interface-annotations