I'm trying to write a spec for a map that satisfies two keys specs.

(s/def ::a string?)
(s/def ::b string?)

(s/def ::a-map (s/keys :req [::a]))
(s/def ::b-map (s/keys :req [::b]))

;; Satisfies both specs
(s/def ::a-and-b (s/and ::a-map ::b-map))

;; Extend an existing spec
(s/def ::another string?)
(s/def ::a-extended
  (s/and ::a (s/keys :req [::another])))

s/merge

It’s designed to merge multiple s/keys specs.

Thank you very much @seancorfield, it seems to be the perfect tool for the job.

How can I spec a map where the keywords can be anything (basically IDs in this case) but I do know what I want the values to be

@victorbjelkholm429 what about (s/map-of any? #{:value1 :value2})

Thanks @aisamu and @borkdude. map-of any? seems to be what I was looking for.

Ended up with (s/map-of keyword? :my/other-spec) 🙂

Better to change your spec before coding than changing it after coding!

@fmjrey funny you say that as I currently sit and trying to retrofit clojure.spec after getting the basic mvp features in place 🙂