imenu doesn't support spec

[rrudakov]

Currently it's not possible to navigate to a spec definition using imenu with clojure-ts-mode, because only symbols are considered as definitions. So we see only one entry with the name Anonymous:

In clojure-mode imenu supports specs.

Would it be useful to define a special category for specs like this?

We can check if def has a s namespace to distinguish normal variables from specs (another option is to check if first item of a def is a keyword).

[rrudakov]

Also we might consider highlighting s/def with font-lock-keyword-face just as other def forms.